My professor should just play these videos in class on the overhead projector. I've learned more in 30 minutes from these videos than the 2 weeks I've been in class.
I have never loved math, but if you taught it to me, it just makes total sense and is not so imposing and / or overwhelming to me. Thanks for having this channel.
@yeedust watch my video on "scientific notation: multiplication and division." learn how to do that. then come back to this video and use significant figures in your calculation. your problem is no different from the ones i talk about in this lesson. use the significant figures rules to round.
This video helped phenomenally more than the one my AP chem teacher gave us to watch. within 15 seconds of watching, my main question had been answered, instead of waiting fifteen minutes for the yapper in the other video to get to the four points that didn't help with the assignment at all. Thank you for making this!
i talk about this in "scientific notation and significant zeros (1.8)". the point is to show that those last two zeros are significant figures. but it's more complicated--check out the video!
you want there to be the same number of sig figs in both numbers because you're thinking about the rules for multiplication and division. but the rules are very different for addition and subtraction. in this case, you don't care about how many sig figs in the starting numbers, only where the decimal place is. if this confuses you, you should watch my video called "add and subtract with significant figures (1.6)"
Hey everyone, I'm here to help. If you have any questions or just want to learn more, click on the link in the description above. It'll take you to a page where you can ask me questions.
@Eywa355 no, i'm sorry, you're wrong. i think you might be confused because you're thinking about the rules for multiplication and division. addition and subtraction have a different set of rules, which i'm following here. let me know if this still doesn't make sense.
no, the way i do it in the video is right. if this is confusing for you, watch my video called "add and subtract with significant figures," and message me if you still have questions.
i hate my physics teacher so much, she just makes us do a few problems and write down definition and that's it. Unfortunately she's also my math teacher :/ I'm glad i found you and other people that essentially saved me
no. look at the numbers we start with : 2 sig figs in 2.0, and 4 sig figs in 8.330. we round the final answer to the smallest of these, so it should have 2 sig figs. why do you think there should be 3 sig figs in the final answer?
Sir 😢😃U just saved me from the confusion Web of significant figures and scientific notation ,Everytime it used to skip from my brain .......Ur way of style just like I am not studying it feels me as I am playing with those topic that before Ur Your Videos Seems to teasing me......☺ Thankyou soo much sir.(in hindi: Dhanyvaad sir).🙇🙏
I saw an hour long seminar on Significant Figures and didn't understand it all. I've seen your videos and have now got a clear understanding in about 30 minutes. Thank You!
because i'm adding here, and there are different rules for addition/subtraction than there are for multiplication/division. you want there to be 1 sig fig because those are the multiplication rules. but this is very important--make sure to learn the addition/subtraction rules and it will make sense: watch my video called "add and subtract with significant figures."
Holy shit! I never thought it was this easy thank you. you saved me man. the way my teacher teaches is so monotone and boring you'd fall asleep but thank you, your a life saver
You are my hero this semester! I’m going to owe my career all to you. If I don’t pass chemistry this semester, my prerequisites for grad school would be at a stand still and I will never be able to ‘pass go’. Thank for making chemistry digestible and fun to learn. Plus you remind me of my ex, whom I adore, another plus. Just had to say thank you! Hope you are getting paid for this, otherwise i owe you, once I’m no longer a student ;) let you know if i pass this semester...tbc
@MXMGamer good question. i did two videos that will help with this. the first is called "scientific notation: addition and subtraction." the second one is called "scientific notation: multiplication and division."
You just got me to understand something that my teacher took like 2 weeks on and I still didn't understand. But you took like 8 minutes and I feel like a genius now! THANK YOU :D
@rachellauren996 good question. sometimes they count, and sometimes they don't. i talk about this in my videos on significant figures and zeros--check them out, and they should clear everything up.
I've been watching a lot of your chemistry videos and you really make chemistry easier. I'm a visual learner and your videos really help! Thank You! :)
I have not used calculations for several years and decided to get my nurse practitioner (DNP) You provided a great review for my chem class. Thank you kindly!
I swear Tyler is going to help me pass my Chemistry class. Your videos are so helpful, I'm glad I found them on the second day of the semester. I was about to drop my class. The tutors that the school provides, are terrible. Thank you for helping me and many others. I have recommended your page to many students. You are the best!
I just want to thank you so much!!! I'm doing online learning due to the virus and this has confused me so much, but you made the lightbulb go off!!! I hope you have an amazing life 😄
Hey Tyler, I have one question about the final answer. Why are we ending up with 3 significant figures when the portion with (9.2x10^4) on has 2? I ended up with a final answer of 1.1x10^5 assuming only 2 significant figures were needed. Thanks for the help!
Tylor Ralph remember that when you add/subtract you take the least number of decimal places, not least number of sig figs. 9.2 has 1 decimal place, so after adding the numbers your answer should have 1 decimal place.
Thank you for this! This is my topic for my demo teaching and I'm really confused about it but when I watched your video, I already understood it in just 7 minutes. You saved my life brother! ✨
Yeeessss! I’m a sophomore and this was in chapter 3 and I was like what???? And I even went to office hours, but I still didn’t get it. And then tomorrow I have a test on this and I was like I’m gonna fail I still don’t know how to do this, and then I found this dude and I am officially saved😇🙏🏼
Gayatri Devi Donepudi if the exponents are different, you have to move the decimal until one of the powers has the same exponent of the other one. Watch this guys videos on adding and subtracting in scientific notation, he explains it clearly
Hi, my name is Eva I'm in the 8th grade and my FSA is coming up, and the teacher told us that there will be a lot of scientific notation in there. I was so scared because I suck when it come to scientific notation (well at lease I use to) but then I found your video and that changed everything. Now I find myself to be good in scientific notation, now all I need to improve in is reflections and transformation. I just want to thank you so much for making these great videos that have helped me out so much.
Two memory aids for adjusting the exponent of the 10. Case 1: up. "It was LEFT UP to me to clean the cat barf." (moving the decimal place to the left means increase, i.e., up, the exponent on the 10. Case 2: down. "The fire hall is right down the street from me." Moving the decimal point to the right means you decrease the value of the exponent on the 10.
I'm confused. I have 0.413/9.212x10^3 I end up with 0.045 which has 3 sig figs (like 0.413) but if I move the decimal to 4.5 the sig fig count goes down to 2 because the sig fig 0 moves to the left of the decimal... where do i go from there? how do i make it retain 3 sig figs?
can i ask u abt the last result, why 1.13 x 10^5 but not 1.1 x 10^5? because from “addition and substraction” rule the result will follow the lowest digit behind the comma which is only 1 digit allowed, thank you
Tyler, thanks for the help , but my chemistry teacher says that in science when its even you round down and odd you round up, is that correct, if it is you do that to 11.45 you would round to 11.4 , thank you
Some teachers do that, but it's not correct to use with science. Those rules were designed for accounting with money, and they're actually called the "bankers rules." Your teacher might wanna keep using the even/odd rounding rules, but maybe you could (politely!) tell your teacher that the even/odd thing is for accounting and bank statements, not for science.
+Tyler DeWitt Thank you for replying, my teacher would never take advice from any student mostly because he teaches for fun, getting paid from his patents in bio chemistry and mechanics, that he profusely brags about, and about his several doctorates in science, not to mention the daily mentions of his work done in " Baxter" ( I believe that that is how you spell it, as I saw it on the back of his shirt yesterday, AACC 88). This makes my job as a student very difficult, when i go online for extra help some things may be different than what he says, making chemistry harder than it could be. All teachers should be strictly held to same standards when teaching fundamental topics. Nonetheless, I really appreciate you spending your time to help students as myself, who need someone who explains in a way that is easily understood and could be rewind when you don't quite understand something. Keep up the great work man !! =)
I watched your videos and this is still bugging me. Multiplication/Division's rule for determining the solution would be determined by using the number with the fewest significant figures. Addition/subtraction's rule is that the quantity with the fewest decimal places determines the number. I understand this, but which rule goes into effect when they are both placed in the same equation. (876.90 + 98.1) ÷ 56.998 = ? answer given by prof 17.11 As you can see it starts off with adding then ends with division. if we with add rule would it not be three significant numbers and if we went with division's rule wouldn't it also be three. Yet it ends with four significant numbers. Could you clarify on this?
I have this summer assignment I've been doing for AP Chemistry, and I'm supposed to show my work, but if it's as simple as ignoring the powered number, how would I show my work? Do you know the far more expansive version of solving problems that teachers always try to get across to their students, but fail to, because students are smart, and we find shortcuts? (: Haha. Please help to broaden my knowledge on this though. It seems incredibly easy, however, a problem not needing extra explanation should not be dealt with at this time. My brain is already swollen by all the information I've had to retain this summer.
Could you talk about "rounding error," please? My professor talked about it, but it made zero sense (in class AND when I saw her one on one). I don't know what it is, and I'm afraid I might be doing it since I feel like I'm doing the questions correctly, but then get marked wrong.
So, in an addition or subtraction problem we have to make all the exponents the same. Once we do that and change the mantissas accordingly, we can then go ahead and use the place rule?
Tyler, why is it 7.100 instead of 7.1?? What if in the exam we're asked to put 71 in scientific notation and find the sig.fig.? How should we know what to do?
Thank you so much! As a 52 year old college student I appreciate the simplicity of the lecture. I have a chemistry test on Thursday and was worried...Glad to say, not anymore!
But what if you have something like (7.893 * 10^5 nm^3) ÷ (890 nm) I divided 7.893 by 890 nm I got 0.008868 significant figure is 4 . what do I do after I'm stuck
you will round them to least sig fig which would be two and the number be 0.0089 then you ll write in scientific notation and move the decimal 3 places to the right and it would be 8.9*10^-3 then you take care of your second part 8.9*10^2
I was crying because I thought I could never understand scientific notation and now it's making so much sense. Thank you so much. Chemistry hw here I go :'c
Who would click dis-like on such a wonderful eye opening video like this 😏... Thank man ur my hero 😂😂👊🏽 continue making them u made me past physis 97% in exam
In the number 3.200*10^3 If we just multiply them we get 3200 and so 2 significant numbers. But if scientific notation is taken into account then it has 4 significant figures.
Thank you so much this is helping me for webassign a ton my teacher got a 34 on his ATC and he cant even explain scientific notation in a week. Again thank you
Dude, whoever you are, live a wonderful life you literally saved my life with your videos
Ameneth lol
HAHAHAAH-
lol hahaha
I agree I am literally having an exam right now
Simp.
My professor should just play these videos in class on the overhead projector. I've learned more in 30 minutes from these videos than the 2 weeks I've been in class.
You're god dam right.
Say my name
Agree. How I feel about chemistry 112 right now.
Professor? I'm learning this in 8th grade
The real question is why are you guys learning about sig figs in college...
If all my teachers were like him I'd be happy to go to school
ikr
me too and I got a+ because of this guy
For reall
But if your classmates are annoying!😂😠
Me too
If you're not a teacher, you'd make an excellent one. Why do i never get teachers that can explain things clearly and simple like this?
propbally becuz there aint one teacher that will go slow and take time for you thats where youtube comes in handy lol
Because some school's just are too cheap or can't afford an awesome teacher.
@@lmnop01 ✔️💯
because teachers are not compensated for their hard work and ability to teach.
@@Vanessa-fp8db not cheap. The government don't set aside the correct budget.
Lol this guy and the mantissa. When he laughs about it, he makes me laugh.
Same....
I didn't wanna laugh but when he laughed I laughed
Same
I have never loved math, but if you taught it to me, it just makes total sense and is not so imposing and / or overwhelming to me. Thanks for having this channel.
@yeedust watch my video on "scientific notation: multiplication and division." learn how to do that. then come back to this video and use significant figures in your calculation. your problem is no different from the ones i talk about in this lesson. use the significant figures rules to round.
This video helped phenomenally more than the one my AP chem teacher gave us to watch. within 15 seconds of watching, my main question had been answered, instead of waiting fifteen minutes for the yapper in the other video to get to the four points that didn't help with the assignment at all. Thank you for making this!
His comment section in all of his videos are like the MOST positive comment section in the literal history of RUclips
i talk about this in "scientific notation and significant zeros (1.8)". the point is to show that those last two zeros are significant figures. but it's more complicated--check out the video!
you want there to be the same number of sig figs in both numbers because you're thinking about the rules for multiplication and division. but the rules are very different for addition and subtraction. in this case, you don't care about how many sig figs in the starting numbers, only where the decimal place is. if this confuses you, you should watch my video called "add and subtract with significant figures (1.6)"
Hey everyone, I'm here to help. If you have any questions or just want to learn more, click on the link in the description above. It'll take you to a page where you can ask me questions.
@Eywa355 no, i'm sorry, you're wrong. i think you might be confused because you're thinking about the rules for multiplication and division. addition and subtraction have a different set of rules, which i'm following here. let me know if this still doesn't make sense.
no, the way i do it in the video is right. if this is confusing for you, watch my video called "add and subtract with significant figures," and message me if you still have questions.
yes, but i call it unit conversion. so watch my videos starting with "converting units with conversion factors."
i hate my physics teacher so much, she just makes us do a few problems and write down definition and that's it. Unfortunately she's also my math teacher :/ I'm glad i found you and other people that essentially saved me
no. look at the numbers we start with : 2 sig figs in 2.0, and 4 sig figs in 8.330. we round the final answer to the smallest of these, so it should have 2 sig figs. why do you think there should be 3 sig figs in the final answer?
absolutely right. there are different rules for multiplication/division and addition/subtraction.
@bennemann yes, that is *exactly* what you do.
Sir 😢😃U just saved me from the confusion Web of significant figures and scientific notation ,Everytime it used to skip from my brain .......Ur way of style just like I am not studying it feels me as I am playing with those topic that before Ur Your Videos Seems to teasing me......☺
Thankyou soo much sir.(in hindi: Dhanyvaad sir).🙇🙏
I saw an hour long seminar on Significant Figures and didn't understand it all. I've seen your videos and have now got a clear understanding in about 30 minutes. Thank You!
@Imahorde to learn how to do this, you should watch my video called "scientific notation: addition and subtraction."
Dude you have no clue. I had a Chemistry test I had to cram for and you saved my life! Glad my teacher recommended you.
because i'm adding here, and there are different rules for addition/subtraction than there are for multiplication/division. you want there to be 1 sig fig because those are the multiplication rules. but this is very important--make sure to learn the addition/subtraction rules and it will make sense: watch my video called "add and subtract with significant figures."
WHEN I TELL YOU YOUVE SAVED MY LIFEE, not the hero we wanted but the one we needed
Holy shit! I never thought it was this easy thank you. you saved me man. the way my teacher teaches is so monotone and boring you'd fall asleep but thank you, your a life saver
You are my hero this semester! I’m going to owe my career all to you. If I don’t pass chemistry this semester, my prerequisites for grad school would be at a stand still and I will never be able to ‘pass go’. Thank for making chemistry digestible and fun to learn. Plus you remind me of my ex, whom I adore, another plus. Just had to say thank you! Hope you are getting paid for this, otherwise i owe you, once I’m no longer a student ;) let you know if i pass this semester...tbc
I am so glad to find these videos! I am going back to school in my 50's and this guy makes it easy to understand! Thank-you!
@MXMGamer good question. i did two videos that will help with this. the first is called "scientific notation: addition and subtraction." the second one is called "scientific notation: multiplication and division."
You just got me to understand something that my teacher took like 2 weeks on and I still didn't understand. But you took like 8 minutes and I feel like a genius now! THANK YOU :D
@rachellauren996 good question. sometimes they count, and sometimes they don't. i talk about this in my videos on significant figures and zeros--check them out, and they should clear everything up.
you’re the reason i’m passing science, thanks man
People like you deserve to run our education system. Thank you.
Why does he keep giggling whenever he says Mantissa??
cuz it sounds like man testicle. Just kidding.
Phanteus lol
Phanteus no, more like some guys do that sort of thing when saying something that strikes us as funny.
Because he's awesome
Lmaooo ikr
I've been watching a lot of your chemistry videos and you really make chemistry easier. I'm a visual learner and your videos really help! Thank You! :)
Why is it so much easier when you explain it , ive actually learned more in the past 3 videos vs 3 weeks worth of class ! Bless you man bless you !
You can't say "mantissa" anymore. It's called "peopletissa"
this should have way more likes
@@aarontolomeo4549 those damn degenerates
I have not used calculations for several years and decided to get my nurse practitioner (DNP) You provided a great review for my chem class. Thank you kindly!
I swear Tyler is going to help me pass my Chemistry class. Your videos are so helpful, I'm glad I found them on the second day of the semester. I was about to drop my class. The tutors that the school provides, are terrible. Thank you for helping me and many others. I have recommended your page to many students. You are the best!
How is 0.24X10^4 wrong, but 2.4X10^3, correct? Then why not write it as "24X10^2"?
I just want to thank you so much!!! I'm doing online learning due to the virus and this has confused me so much, but you made the lightbulb go off!!! I hope you have an amazing life 😄
EXCELLENT! This is by far the best explanation I have seen. This what a truly great teacher looks like.
8 years later and this video is still help. GOAT
All i can say is "thank you"!
Hey Tyler, I have one question about the final answer. Why are we ending up with 3 significant figures when the portion with (9.2x10^4) on has 2? I ended up with a final answer of 1.1x10^5 assuming only 2 significant figures were needed. Thanks for the help!
Tylor Ralph remember that when you add/subtract you take the least number of decimal places, not least number of sig figs. 9.2 has 1 decimal place, so after adding the numbers your answer should have 1 decimal place.
@@souperman6406 But the answer has 2 decimal places??? 1.13 x 10^5
Hey Tyler my son started watching your videos a week ago before my exam.Your Videos are great and you're the best chemistry teacher ever
Thank you for this! This is my topic for my demo teaching and I'm really confused about it but when I watched your video, I already understood it in just 7 minutes. You saved my life brother! ✨
sophomores failing chemistry, i feel you.
burger king this was due end of second quarter the end of the third is Friday and I’m doing this right now
Yeeessss! I’m a sophomore and this was in chapter 3 and I was like what???? And I even went to office hours, but I still didn’t get it. And then tomorrow I have a test on this and I was like I’m gonna fail I still don’t know how to do this, and then I found this dude and I am officially saved😇🙏🏼
Haha ain't failing, just wanted to make sure I understand everything
physics for me, we dont learn sig figs in chem at my school
Lol I have an 86 but if I mess this test up, it won’t be good
Aw His face when he laughed made my heart melt
the way his face lightens up when talking about chemistry, it is absolutely amazing
Watch it, my mom's name is Mantissa.
@dawood awan r u from us?
Hello i see your addition had three significan figures and you needed two only. So I’m confused :|
4:37 "now my answer is incorrect" I was like whaaat? hahaha
lol same! I was like well thats not good
He said "Now my answer is now in correct scientific notation."
Timothy Dyck Gee thanks, I never figured that out.
Sanjay Malhotra 😅
"well thats not good"lmAO
TYLER HOW WOULD YOU DISTIBUTE THE ANSWERS I HAVE AN EXAM IN A DAY AND THIS IS KILLING ME PLEASE HELP
how do you round to the significant figure if the exponents of 10 are different, and you are adding?
did you get the answer to this?
Gayatri Devi Donepudi if the exponents are different, you have to move the decimal until one of the powers has the same exponent of the other one. Watch this guys videos on adding and subtracting in scientific notation, he explains it clearly
@@swhedha exactly ..thanks love ..i was confused
I left chemistry crying because I just didn't get what I was supposed to be doing, I watched this video and I swear he makes it so easy to understand😭
Hi, my name is Eva I'm in the 8th grade and my FSA is coming up, and the teacher told us that there will be a lot of scientific notation in there. I was so scared because I suck when it come to scientific notation (well at lease I use to) but then I found your video and that changed everything. Now I find myself to be good in scientific notation, now all I need to improve in is reflections and transformation. I just want to thank you so much for making these great videos that have helped me out so much.
IM DOING A PRESENTATION ABOUT THIS TOMMOROW...OMG THANK YOU SO MUCH FOR TEACHING ME NOW I CAN PRESENT IN FRONT CLEARLY AND SIMPLE.
I find it satisfying watching and hearing you write on the paper with that marker.
Two memory aids for adjusting the exponent of the 10. Case 1: up. "It was LEFT UP to me to clean the cat barf." (moving the decimal place to the left means increase, i.e., up, the exponent on the 10.
Case 2: down. "The fire hall is right down the street from me." Moving the decimal point to the right means you decrease the value of the exponent on the 10.
then you should watch my video called "scientific notation: addition and subtraction."
do you think you could do a few more examples on scientific notation and significant figures while adding or subtracting?
This teacher makes me give my chemistry problems a evil smile >:)
I'm confused.
I have 0.413/9.212x10^3
I end up with 0.045 which has 3 sig figs (like 0.413)
but if I move the decimal to 4.5 the sig fig count goes down to 2 because the sig fig 0 moves to the left of the decimal... where do i go from there? how do i make it retain 3 sig figs?
I just passed a college quiz thanks to these videos. Thank you, they are very helpful!
Dang 10 years ago yet much more efficient than my teachers teaching us 😂🙌👌👏
Man your video quality is getting better n better I cant wait till I see you in 2015.
you are the only reason for what I have confidence in science.
I love you Tyler. I was so sad that I was going to fail my test because I missed a few days of school. Ur the best
God bless you. My class just started and i think I'd already be failing with out you and your videos
Ive never learned so much in 8min it usually takes me 3 hours at my school thank you so much ill recommend this to my class mates! :)
Just started chemistry in college this year. HUGE help! Thank you so much
can i ask u abt the last result, why 1.13 x 10^5 but not 1.1 x 10^5? because from “addition and substraction” rule the result will follow the lowest digit behind the comma which is only 1 digit allowed, thank you
Just got an entire lecture in 20 minutes. That's how school should be.
I love how he can't say the word 'Mantissa' without giggling a little XD
Tyler, thanks for the help , but my chemistry teacher says that in science when its even you round down and odd you round up, is that correct, if it is you do that to 11.45 you would round to 11.4 , thank you
Some teachers do that, but it's not correct to use with science. Those rules were designed for accounting with money, and they're actually called the "bankers rules." Your teacher might wanna keep using the even/odd rounding rules, but maybe you could (politely!) tell your teacher that the even/odd thing is for accounting and bank statements, not for science.
+Tyler DeWitt Thank you for replying, my teacher would never take advice from any student mostly because he teaches for fun, getting paid from his patents in bio chemistry and mechanics, that he profusely brags about, and about his several doctorates in science, not to mention the daily mentions of his work done in " Baxter" ( I believe that that is how you spell it, as I saw it on the back of his shirt yesterday, AACC 88). This makes my job as a student very difficult, when i go online for extra help some things may be different than what he says, making chemistry harder than it could be. All teachers should be strictly held to same standards when teaching fundamental topics. Nonetheless, I really appreciate you spending your time to help students as myself, who need someone who explains in a way that is easily understood and could be rewind when you don't quite understand something. Keep up the great work man !! =)
+romagnolirojas10 my college professor had said the same thing sir. It is not correct with science. :)
my professor said the same thing
thank you! Here I was thinking that my professor was retarded. I will politely school her on some science in your behalf
I have chem 11 final next week and your vids helped me so much
I watched your videos and this is still bugging me. Multiplication/Division's rule for determining the solution would be determined by using the number with the fewest significant figures. Addition/subtraction's rule is that the quantity with the fewest decimal places determines the number. I understand this, but which rule goes into effect when they are both placed in the same equation.
(876.90 + 98.1) ÷ 56.998 = ? answer given by prof 17.11
As you can see it starts off with adding then ends with division. if we with add rule would it not be three significant numbers and if we went with division's rule wouldn't it also be three. Yet it ends with four significant numbers. Could you clarify on this?
I have this summer assignment I've been doing for AP Chemistry, and I'm supposed to show my work, but if it's as simple as ignoring the powered number, how would I show my work? Do you know the far more expansive version of solving problems that teachers always try to get across to their students, but fail to, because students are smart, and we find shortcuts? (: Haha. Please help to broaden my knowledge on this though. It seems incredibly easy, however, a problem not needing extra explanation should not be dealt with at this time. My brain is already swollen by all the information I've had to retain this summer.
help, what would the answer by when you round 2.999 ×10 to the 2 power to 2 significant figures?
Thanks. You teach about 100 times better than my chemistry teacher
Could you talk about "rounding error," please? My professor talked about it, but it made zero sense (in class AND when I saw her one on one). I don't know what it is, and I'm afraid I might be doing it since I feel like I'm doing the questions correctly, but then get marked wrong.
thanks so much, u help a lot, tons of student pass the chemistry because of you.
So, in an addition or subtraction problem we have to make all the exponents the same. Once we do that and change the mantissas accordingly, we can then go ahead and use the place rule?
Tyler, why is it 7.100 instead of 7.1?? What if in the exam we're asked to put 71 in scientific notation and find the sig.fig.? How should we know what to do?
Thank you so much! As a 52 year old college student I appreciate the simplicity of the lecture. I have a chemistry test on Thursday and was worried...Glad to say, not anymore!
💀
Give this guy a trophy. Thank you, sir! So helpful
even though it was 10 years I love the way he Teach , So salute man !
But what if you have something like
(7.893 * 10^5 nm^3) ÷ (890 nm)
I divided 7.893 by 890 nm I got 0.008868
significant figure is 4 .
what do I do after I'm stuck
you will round them to least sig fig which would be two and the number be 0.0089 then you ll write in scientific notation and move the decimal 3 places to the right and it would be 8.9*10^-3 then you take care of your second part 8.9*10^2
Geez I should've watched this video before i did my test! He teaches better than my teacher
Thanks bro, you literally saved my tasks with your video.
What is it is 0.003*10^23. Would it be one sig fig or four??
But for multiplication unlike division you'd add the powers, instead of subtracting them, right?
yes
I was crying because I thought I could never understand scientific notation and now it's making so much sense. Thank you so much. Chemistry hw here I go :'c
Who would click dis-like on such a wonderful eye opening video like this 😏... Thank man ur my hero 😂😂👊🏽 continue making them u made me past physis 97% in exam
That was the best I've ever had it explained to me. Thank you. I think I now get it.
In the number 3.200*10^3 If we just multiply them we get 3200 and so 2 significant numbers. But if scientific notation is taken into account then it has 4 significant figures.
Thank you so much this is helping me for webassign a ton my teacher got a 34 on his ATC and he cant even explain scientific notation in a week. Again thank you
Isnt the final answer 3 sf with 1.13? shouldnt it be 1.1 according to the other numbers we added?
Why is the exponent raised from ^4 to ^5 when the decimal is moved to the left at the end of the 2nd problem ??