Dimensional Analysis/Factor Label Method - Chemistry Tutorial
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- Опубликовано: 26 янв 2011
- A tutorial covering the basics of dimensional analysis and how to convert from one set of units to another using appropriate conversion factors.
www.thechemsolution.com/
It's like being taught by Luna Lovegood. Best help ever.
So much better at explaining things than my chemistry teacher...
I still don't Get it.....😩
Thank you so much! My school chem teacher really sucks at teaching. She taught us with a T chart like wtf but thank you UR AWESOME
thanks now im starting to understand this a bit more. because, my teacher expects us to learn in in 20 minutes it takes me a bit longer then this. so i appreciate this presentation. it was really helpfull. thanks again.
Don't we have to limit our digits to a certain amount of significant figures? 😔
I don't know why I find this so hard:(
I do not have time to make you a chart, but I have another video up that does the kind of conversions you are asking about...dimensional analysis part II. thanks for watching!
Why wouldn't the answer for the Milk one be 3784?
What a great tutorial and with more than one good example. This has been very helpful and your voice is perfect. No highs or lows to distract from the lesson and a perfect tone all the way through. Thank you so much. I look forward to watching more of your tutorials.
this 11 minute video taught me what my teacher couldn't in 2 weeks
In the 2nd problem how did you know how many significant figures to round to?
THAT MADE SOOOO MUCH MORE SENSE!! this is awesome, i need to make the classmates in my class watch this!
thanks, my chemistry teacher barely speaks "Engrish". Also she dosen't teach, she just tells us to print out packets and learn. this helps a lot.
Excuse me where can I find all of these conversions? I'm taking a chemistry course is this something that I need to memorize?
you. are. amazing. thank you so much. I was stuck on how id do the miles to km, and hours to minutes in the same problem. thank you!
THANK YOU SOOOO MUCH!! I have an exam tomorrow, and this helps really good!!
nice, I understood this better then what my teacher was trying to teach.
I don't get any of this ? sigh. 5:34 I just don't get how you get that kind of answer. I just started chemistry today, and this problem is in the first lesson.
for the one gallon of milk question...how did you come up with 3.8x10^3....I calculated 3784 mL
its the same answer, but she used scientific notation to write the answer, search it up on youtube and learn it if you want, its very simple.
you have to round the number up to 3800 and then use Sig Figs to get 3.8x10^3
LOL 7 months later...
she rounded
My too. I guess she was using significant digits. she rounded up. Right now the decimal place is behind the 4 but you moved it behind the three and the 8 turned the 7 into 3.8 she had to move the decimal point 3 spaces to the left therefore her answer is 3.8*10 to the 3rd power
You round it to the correct sig figs and use scientific notation
Question: This is going to make me sound like an idiot, but bear with me: when I completed the conversion, I got 182.88cm
Obviously there is some kind of rounding involved, but I just can't wrap my head around it. Can someone explain?
Im new to chemistry, can someone explain how she got the 7.6 x 10^3 does this have to do with significant figures???
THANK YOU, after 3 years I get it now lol
yup, 17000 has 5 sig figs. final answer is 7598.055556. rounded is 7600.01. or 7600 or 7.6 10^3. i think thats how it works
This was exactly what I needed, thanks for the tutorial!
so yeah, the question is what do we base our final si fig on? is it how many are in 17000, 5?
So helpful!
thank you! this was great help! now i wont fail my exam tomorrow
Very good video.
this was really helpful, thanks. but at the end, shouldnt be 7.6 x10^2? not 3?
Thank you so much I finally understood the concept :)
Thank you really much!!!!😊😊😊you explaining much better and problems are good examples, if you would not help me I would not be ready for my quiz tomorrow.
I show my students how to work backwards. Once they identify the dimensions for the answer, they know what dimensions have to be in the numerator and/or denominator, placing the factors to provide those dimensions where they are needed, and cancelling the rest as they work back toward the given information. It is more of a game than work unless you have to do a lot of them in one sitting.
I've passed all my College level Calculus classes, but I just can't seem to understand how to do this. It's so damn hard for me. Help please ? anyone?
I thought Xzibit was gunna teach me chem when I heard that intro
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Just what I needed thank you very much!! You kind of talk like Luna Lovegood from Harry Potter btw.
it helped a bit
Ugh...it's a bit confusing. I mean I get how you got your answer for 3:02 but then you say divide by the number at the bottom...and if you do that you get 91.44...
Why are some of the conversion factors you give rounded up/down to the nearest 1 while others are rounded up/down to the nearest tenth or hundredth? This seems kind of inconsistent.
Helpful enough to complete my homework!
DAt was just Gr8 KEEP UP D GUD WORK..!!!!
thank you soooooooooooooo much you are so clear and easy to understand!!!!!!!!!!
THANK. YOU. I couldn't do this at all before watching this!
Thanks!! It all makes sense now!
Thanks so much for this. I have done DA with my advanced eighth graders in the past - but your careful, slow explanation means they can go at their own pace. Great examples, great careful talking through.
thanks! Made it so easy to understand :-)
Thank you, thanks to you I can stop cramming for the test tomorrow and get some sleep.
Thank you SOOOOO MUCH BIG HELP!!!
thanks for the help
Nice! Thanks alot. P.S that beat at the intro tho! Haha
I tried the second problem but instead of using quarts fist I jumped to liters then to mL. my answer is 946ml. why isn't it the same?
@maryammagic1 I just worked the problem again and got 7.6 x 10^3...try it again, maybe you accidentally put one of the numbers into your calculator wrong :)
I want to marry this woman
Thank you so much!
You can look up such conversion factors on Wolfram Alpha.
helped me alot!
Thanks so much!!!
AWSOME!
Thank you!!
Thank you!
Thank you!!!
Where can I find a
Btw this video helped me so much
Thank you!!!!!!!!
thank you soooo much
THANK YOU!!!!!!!!!
THAAAANKS SOOOOOOOOO MUUUUUCHHHH!!!!!!!!!!!!
@haleycbrrr Hahaha same thing I thought
Sexy voice. But I don't think that is the point.
why
im lucky i have an iq of 135
Thank you!!!