27:34 Tungsten= W Thank a lot sir for the session! Edit: The letter W actually comes from the other name of the element that is wolfram. The name wolfram is derived from the mineral the element was discovered in, which is wolframite.
Now I am in 10th but still I am studying this chapter because I can't understand my 1 chapter of chemistry so I sugges all 9th students study this chapter properly because it's very important topic for 10th chemistry
Homework :- 1:28:53 -> Answer) 3.011 × 10²². 1:38:23 -> Answer) 31.1 × 10²¹. 1:47:27 -> Answer) Number of Moles present in 8.8 grams of carbon dioxide = 1.1 moles, molecules present in 8.8 grams of carbon dioxide = 6.6242 × 10²³ Number of oxygen atoms present in this = 2.4088 × 10²³ Thank You so much Sir 😊
I’m a 10th student and y’all trust me this is very important topic ,otherwise you’ll have to restart from class 9 just like i did lol but being honest if you don’t know this then you’ll not be able to study class 10 chemistry at all and i mean it
Zyada kuch nahi hai bas yahi hai ki Agar aap atomic/molecular mass ko (6.022×10²³) se multiphy karoge to wo jo atomic mass ka magnitude tha wo same rahega lekin unit (amu) se (g) ho jayegi
you are so good sir, in school or in ncert we are not introduced with the basics well so happy to study from you................... you helped me a lot now i know what is the true power of concept
Molecular mass of :- H2so4=98u NaOH=40u K2S04=174u Sir the lecture was amazing.... Sir u r very very much helpful to we childern's💗💗 Thanku soo soo much sir 💖
Thanks a lot, sir, you made the concept easier to understand. Tomorrow is my exam and I was totally confused by this chapter but u helped me a lot 😊🙏 52:54 {Answers} 1. H2SO4 > 1*2 +32+16*4 > 2+32+64 =98 2. NaOH > 23+16+1 = 40 3. K2SO4 > 39*2+32+16*4 > 78 +32+64 = 174
Hw ques👇 Tungsten=W as its scientific or another name we can say is -: Wolfram. Calculate molecular mass👇 1. NaOh=40u 2. K2SO4=174u Last h.w. ques👇 n=8.8÷44=0.2moles No. Of molecules=0.2×6.022×10 23 =12.044×10 21 CO2 molecules =12.044×10 21 =24.088×10 21 O-atom. Sir if my answer is not correct so please correct it😊
Sir i just want to say that you teach very well but sir pls give the clear defination in hindi of the topic which you are teaching so that we can also understand that what does it mean
Like in the first one 1. H2SO4 H2- 1×2 (because Hydrogen's atomic mass is 1) S- sulphur (its atomic mass is 32) O4- 16×4 (oxygen's atomic mass is 16) So, add them all 1×2+32+16×4 You will get 98 So, 98g/mol or 98u will be the answer
Sir no need of improvement u r legend in this field 🔥🔥🔥 keep growing and aaj laga doo.....Sir you always try to make concepts easy for us..... I really appreciate you sir..... SALUTE....
I got 98 in science class 9 today my report card came cant believe i m dead😑😑 thank u so much edumantra i will study from u till class 12 thank u sanjiv sir so much. East or west sanjiv and rajiv sir are best. Numericals ko itna easy kardiya kaamaal karte ho pandeyji
Number of moles in 8.8g of CO2= Given Mass/Molar Mass = 8.8/44=0.2 moles Number of molecules in 8.8g of CO2= No. of moles*Avogradro's number = 0.2*6.022*10²³ =2/10 * 6.022*10²³ =12.044*10²³ / 10 =12.044*10²² =1.2044*10²³ As each molecule of CO2 has 2 oxygen atoms Number of oxygen atoms in 8.8g of CO2=Number of molecules in 8.8 g of CO2*2 =1.2044*10²³*2 =2.4088*10²³
@@xitiz5236 Yes I have !!! But not in fair ....In A4 size paper in which I have drawn lines and wrote over then...😢☺😐😐 My Copy bundle is completely Fresh which I will use in 10fh standard 😊😊☺😁😁😂😂😂
Important note: make notes of every lesson you are listening in RUclips trust me it will help alot if not you are going to forget about it and you have to rewatch the whole video again, i did the same mistake and here I am learning again but this time I'm taking full notes and revise those notes constantly so you will never forget about it and sir I really love your explanation without you i really wouldn't have done science since I was doing online classes I didn't focus much and I'm struggling now but thanks to you I got sankranti holidays and I decided to learn the whole portion and I'm almost done with everything and all the concepts are crystal clear to me even the numericals i really love you sir thank you very much!
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4:50 😅
Legends are here after announcement of offline exam
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Op😎😎
Yes bro you r tight
😅✌️
Yes 🤣🤣
52:55
2 x H = 2u
+ S = 32 u
+4 x O = 64u
= H2SO4 = 98u
NaOH = 40u
Na=23u
+ O=16u
+H=1u
= 40u
K2SO4
2 x K = 78u
+S = 32u
+ 4 x O = 64u
= 174u
Sabbas beta 👏🏻👏🏻
Wha!!!! Bete
Waah mere sher!
H2so4
32+ 2 + 64 == 100 u
Beta op in the chat 😎😎😎😎
1:18:37 Sir, You don't need to improve your teaching, You are one of best Teacher :)
Sir, Bas Ions vaala thoda samajh nhi aaya 😅
Same.. ions nhi aaya
Ions nahi aya haaan
Bhai har kisi ko improve karna chaniye
@@dileshvermaviteshverma1362 nahi
Haa...same
1:18:35 sir you teach me well .and a good explanation.hope you will make it better
27:34 Tungsten= W
Thank a lot sir for the session!
Edit: The letter W actually comes from the other name of the element that is wolfram. The name wolfram is derived from the mineral the element was discovered in, which is wolframite.
Thx bro
@@kushagrabhattacharya8537 sure thing
Google se copy kiya hai 😂😂😂
@@manojKumar-wk7ky Yes duh XD
It's right
Now I am in 10th but still I am studying this chapter because I can't understand my 1 chapter of chemistry so I sugges all 9th students study this chapter properly because it's very important topic for 10th chemistry
OY HARSHITA TU MDH SCHOOL MA PADHTI THI KYA ??
@@harshitagautam4285 Dont reply he is a creep
Hlooooooo
Thanks for the suggestion
Omg Harshita sameeee here.....😪😂❤️
Really water is a very essential component of life because for drinking as well as a good example of chemistry reaction 😅😅😅
Right😅😅😅
@@bts7789 BTS ARMY HELLO 💜🤭
@@charukumari2990 hello
Hy 😊🌷......
bachon ko bhi pata hai
Homework :-
1:28:53 -> Answer) 3.011 × 10²².
1:38:23 -> Answer) 31.1 × 10²¹.
1:47:27 -> Answer) Number of Moles present in 8.8 grams of carbon dioxide = 1.1 moles, molecules present in 8.8 grams of carbon dioxide =
6.6242 × 10²³
Number of oxygen atoms present in this = 2.4088 × 10²³
Thank You so much Sir 😊
@@samsundramrajput5934 Ohh! Is It?
Could you tell me the correct answer?
@@samsundramrajput5934 Okay.... I'll have a look on it.
Thank You...
The real teacher 😝 are not in school but real teachers are there in u tube for us every sec 👍👍👍❤️
Very nice class
Yes
False🤞
Yes right
School mein bhi hai
Paper hai kal ...padh lo comments phdne ki bajaye 😂😘
Class 11th wale kon ye video dekhne aaya hai 🤣🤣🤣
1-20 elements
Hydrogen
Helium
Lithium
Beralliyum
Boron
Carbon
Nitrogen
Oxygen
Fluorine
Neon
Sodium
Magnesium
Aluminium
Silicon
Phosphorus
Sulphur
Chlorine
Argon
Potassium
Calcium
So
Underrated comment , your time wasted
Tungsten scientific name is wolfram and symbol is W
Tu kinar he kya
27:38 tungsten - w
Sir Molecular mass of
H2So4=2+32+64=98units sir
NaOh=23+16+1=40units sir
K2So4=39×2+32+16×4
=78+32+64=174units sir
Yous given Homework completed sir
Good work bro 😁
@@eleceousgaming3566 yes
Unified mass (u)... 😓
Thank you yaar...I was kinda confused about how to do it...i saw your answer and my doubt was cleared!💜💜💜
jyada hoshiyar mat ban google ka istemaal band kar de
Class 11 student clearing basics revision 😢
Everyone: sir John Dalton
Pandey sir : Dalton babu
u r cringe
@@botplayzminecraft9906 lalu
Sir aap botha Acha padta hai I like it
xD
@@botplayzminecraft9906 lgta ha Jada padhai likhai krliye tum😂😂kiddo guy
I’m a 10th student and y’all trust me this is very important topic ,otherwise you’ll have to restart from class 9 just like i did lol but being honest if you don’t know this then you’ll not be able to study class 10 chemistry at all and i mean it
Thank you
What about your google transletor that you use😂
Thanks 😊
@@enrether,
🤣😅
I too 😂
1:48:21
Moles Present :- 0.2
Molecules present:- 12.044×10²³
No. Of Oxygen Atoms:- 24.088×10²³
how u find oxyen m annswer is diffrent
Right😃
@@dineshmishra2975 For finding that ...Just multiply the molecules you get in the CO2 i.e
12.044×10²³ × 2 = 24.088×10²³
@@unpredictablehuman.. oh okay
Thank dude
I was wondering
You got my doubt cleared 😂😂😂
@@gameplaystream4610 Hehe .... That's alright
I'm happy that I could help! 😁
Thank you sir by your help i gain 68/70 in half yearly examination of Class 9th ❤️
80 marks half yearly hota hai na Bhai?
@@omshelke7162 yess bro😑
When you don't know how to flex and write something wrong
Idiot study in his father's school
No it's 70marks
Sir u r the best teacher in my opinion and I understand all the concepts but sir 1:18:00 I didn't the magic of mole concept
Same with me
Zyada kuch nahi hai bas yahi hai ki
Agar aap atomic/molecular mass ko (6.022×10²³) se multiphy karoge to wo jo atomic mass ka magnitude tha wo same rahega lekin unit (amu) se (g) ho jayegi
sir no doubt everyteacher does hardwork for there students
salute to every teacher
Sir you always try to make concepts easy for us..... I really appreciate you sir..... SALUTE.....
Chu
I agree @ M J Gaming
@@lastshot675 tia
ase baat nhi h
@@priyanshusharma7761 toh kaisa baat ha
54:30 moleconcept
you are so good sir, in school or in ncert we are not introduced with the basics well so happy to study from you...................
you helped me a lot now i know what is the true power of concept
Fun+Education=Edumantra👍
15:00 no teacher can teach like this👍👍👍
Respect every teachers👍👍
Molecular mass of :-
H2so4=98u
NaOH=40u
K2S04=174u
Sir the lecture was amazing....
Sir u r very very much helpful to we childern's💗💗
Thanku soo soo much sir 💖
How Confidence Level Should Be
Question:- Answer any 5 Question out of 10
Your Answer:- I have Done all the questions you could check any 5 question.
hahaha yeaa
Keep your confidence with you
It's over 90000
teacher- u got only 3 correct in these mcqs
Righ
1:48:00
sir, no. of moles = 0.2
total no. of molecules = 1.2044*10²³
no. of O2 molecule = 2.4088*10²³🇮🇳🇮🇳🇮🇳💖
Please explain
no. of o2 molecules kaise nikala plz batao
1:18:30
Yes sir samajh aa Gaya
After 3 month I will come in 12th and still watching thiss. .....basic strong krne ke liye 🥲real dhukh guyzz🤌
Skipping online classes and studying here 🤣
Vry turu bro😂😎
Arhayyyy😅😂😂😂😂😂😉🙌
Heh
Concept clear 💯
Edu army showed the power of them by helping you remonetize 😎
02:44, aise-vaise-jaise-taise-aise-kaise-haise-naise; great legends, hats off sir
Thank you so much sir 🎉🙏🏻 because of you I am not worried about my offline exams. Your teaching style is just 🤩
hamare to online ho rhe hai😂😂
Hello
@@eshananand7751 waahh bhai 😭😭
@@shreyashjohari5306 apne toh make hi maje😎😎
@@eshananand7751 Term 2?
Answer of mole concept homework
-no. Of moles -> 0.2 moles
-no.of molecules ->1.2044 x 10^23
No. Of oxygen atoms -> 2.4088 x 10^23
*10^22
Hi
@@yahyasiddique6311 bhai answer sahi hai uska
Hlo bhai plz pura likho na... Yrr plz
@@yahyasiddique6311 bhai pura samajao na plz
Amazing sir and thankyou for good teaching 🥰
Sir really u have made the best vedio and u don't need any improvement as u are best in your own way..THANKYOU SIR👏
its video not vedio first improve your grammar
@@pranavrahane2477 come on bro, it's just a little mistake
@@pranavrahane2477 Grammar? It's called a spelling mistake
@@bhavishaysingh1374 Ok leave it bro
@@txtxtany Leave it
Answer of H.W. question
Moles=0.2
Molecules=1.2044*10^23
No. Of oxygen atoms=2.4088*10^23
No.of oxygen wrong
27:33 ka answer
Tungsten - W (Wolfram)
😂😂😂🤣
Thanks a lot, sir, you made the concept easier to understand. Tomorrow is my exam and I was totally confused by this chapter but u helped me a lot 😊🙏
52:54 {Answers}
1. H2SO4
> 1*2 +32+16*4
> 2+32+64
=98
2. NaOH
> 23+16+1
= 40
3. K2SO4
> 39*2+32+16*4
> 78 +32+64
= 174
Sanjeev Sir=I think outside the box
Me=In examination, I think outside the question paper 😂😂😂
Your teaching style is awesome sir❤️❤️❤️
We too
@@jamesvictorr.9161 😂😂😂🤣✌️
15:58 sir your commentry is OP 😂😂
Cringe
Say omp not op
@@sm_4859What is OMP?
1:11:57 😁 wala wala sir
I will use u in memes after exams 👍🏻
😂
5:20 ANAND SIR
👇🏻
Yes you are right
Mane nahi karu ga to kaun hai
Sanjiv sir is my school teaxher
@@principalbathinda3497 really
@@pritichaudhary898 are uske school k kisi teacher ka Nam Sanjiv hoga .😆
Sir please give more real life examples with it , it makes us very easy understand
Sir, when hydrogen and carbonate combine they make HCO3 ,why not H2CO3 as carbonate has minus 2 charge
It's Actually H²CO³.Its an organic acid called carbonic acid.He made a mistake while writing
@@alphabeta2589 ab to sigma bam jao
Bhai mera bhi yahi q h
How well do you teach sir? there is no word to say.💞love you sir 💞Fantastic explanation of chapter 💓💙💕💕💞💞💙
First i was thinking that chemistry is hard but know it is easy for me
Thank you sir 😎
27:34
Tungsten
Scientific Name- Wolfram
Symbol- W
Atomic Number- 74
Tungsten is represented by w because it's scientific name is wolfram
Niki
Ji ha tungsten is represented by W And Atomic number is 74 And Atomic weight is 184 waise agar periodic table ke anusar dekhte h to 183.84 hota h
@@Ramsharma-cp5tb wah bhai
Its latin name bro
It latin name is wolfro
Kon kon final paper ka liya dhek Raha ha comment Karo
Me😂
Hw ques👇
Tungsten=W
as its scientific or another name we can say is -: Wolfram.
Calculate molecular mass👇
1. NaOh=40u
2. K2SO4=174u
Last h.w. ques👇
n=8.8÷44=0.2moles
No. Of molecules=0.2×6.022×10 23
=12.044×10 21 CO2 molecules
=12.044×10 21
=24.088×10 21 O-atom.
Sir if my answer is not correct so please correct it😊
Ye hw question mai Oxygen atom wala kaise kiya???
@@yashibishnoi8520 CO2 ke moles ko 2se multiply krna padega kyuki CO2 me two molecules of oxygen h
@@shahnawazmahboob8625 ohh now I got BTW thankyou😊😊
It will be 24.088x10^22 not 10^21 as only one decimal placed changed.
22:41 yes sir dimaaaag mein voh baat pheed ho gyi hai...😂🤣😆
Sir i just want to say that you teach very well but sir pls give the clear defination in hindi of the topic which you are teaching so that we can also understand that what does it mean
1:1:35😂😂
(15:23) absolutely no sir , Not every teacher can make concepts easy like you .
Entertainment+good explaination+confidence💯🔥....thankyou sir ... did an awesome job!!👍🙇
🔥
🔥
52:59 answers are..
1. 98g/mol
2. 40g/mol
3. 174g/mol
Like in the first one
1. H2SO4
H2- 1×2 (because Hydrogen's atomic mass is 1)
S- sulphur (its atomic mass is 32)
O4- 16×4 (oxygen's atomic mass is 16)
So, add them all
1×2+32+16×4
You will get 98
So, 98g/mol or 98u will be the answer
@@farhanaameenk actually you have to remember both
@@farhanaameenk I am suggesting you an app in playstore... Search periodic table and download the first app
1:18:35 yes sir Alhamdulillah I understood 🙃🙈🙌
Sir no need of improvement u r legend in this field 🔥🔥🔥 keep growing and aaj laga doo.....Sir you always try to make concepts easy for us..... I really appreciate you sir..... SALUTE....
When is your exam ?
Tomorrow
😈
1:47:30 answer is
No of atoms in 8.8 g of co2 is 12.044 * 10²² and in oxygen 24.088 * 10²²
No. Of moles = 8.8/44 = . 2
Homework question answer is number of moles is 0.2 moles number of molecules is 12.044 X 10raised to 22 and oxygen atoms is 24.088 X 10 raised to 22
Yes
Yes yes 🙌
Yes !
Yes u r right buddy , i too calculated just now !!
Why you have multiplied 2 to get x
I got 98 in science class 9 today my report card came cant believe i m dead😑😑 thank u so much edumantra i will study from u till class 12 thank u sanjiv sir so much. East or west sanjiv and rajiv sir are best. Numericals ko itna easy kardiya kaamaal karte ho pandeyji
Board mein kitne mile?
Watching at 2× speed a day b4 exam
Me too
Same here
Same😭
@@elishorts1027 same monday ko start ho rhain hain
@@YoungCentaur. owh tumhare pass tym h abhi b jldi se cover kr lo apna syllabus
27:32 tungsten = *W* atomic number = 74
1:28:52 - 3.011*10^22 atoms (Answer)
Kaise bhai
1:48:37 No. Of mole in CO2=0.2
No. of molecule =1.2044*10²³
No. Of mole in o2=2.7
No. Of molecule=5.4197*10²³
Plz tell me how u got the no . Of oxygen atoms
@@sakshamvajpayee9505 why ???? Its a secret
Number of moles in 8.8g of CO2= Given Mass/Molar Mass
= 8.8/44=0.2 moles
Number of molecules in 8.8g of CO2= No. of moles*Avogradro's number
= 0.2*6.022*10²³
=2/10 * 6.022*10²³
=12.044*10²³ / 10
=12.044*10²²
=1.2044*10²³
As each molecule of CO2 has 2 oxygen atoms
Number of oxygen atoms in 8.8g of CO2=Number of molecules in 8.8 g of CO2*2
=1.2044*10²³*2
=2.4088*10²³
If my school will put offline exams then I have to watch all these videos again.
Notes bna looo
@@rajanshukla2512 have u mqde
@@rajanshukla2512 chapter Samjhana Bhi Jaruri Rehta hai,Varna Aage problem hojayega
@@xitiz5236 Yes I have !!!
But not in fair ....In A4 size paper in which I have drawn lines and wrote over then...😢☺😐😐
My Copy bundle is completely Fresh which I will use in 10fh standard 😊😊☺😁😁😂😂😂
@Tanya Singh means ? What u mean tanya...
Calculate mass of 0.8 moles of nitrogen.
Solñ: 1 mole of nitrogen= 14g
0.8 moles of nitrogen= x
= 1/0.8 ×14/x
=x=14×0.8
=x=11.2
Are sir aap toh Lockdown mein real friend ho jo hum student ke liye itna accha content bana rhe ho
Yes . You are right
Hmmm too good comment ...😊😊😊😊
U noob
@@dashingankitgaming976 how noob
@@dashingankitgaming976 bhai satka hai kya he os not noob he is pro
Combination of digraj sir and sanjiv sir is excellent 👍👍👍👍👍👍👍👍👇👇
Yes!!🤩
✅ya
Yess🤩🤩
Yes sir all topics are clear thank you so much sir 1:19:00
Saying from my bottom of heart ❤ this chapter in not clear before watching video but now its clear. But sir I have doubt in 11 question of text book
My all concepts gets cleared in Nitin jain Sachin jain classes
1:18:56 revising this concept for my exams! sir you are the best sir i have ever known, truly thanks for the videos!
36:11 funny part 😂
Yea it did make me chuckle
1/5 moles
6.022×10²³/5 number of molecules of CO2 in 8.8g CO2
6.022×10²³×2/15 number of oxygen atoms in 8.8g CO2
Modified Mass
H2SO4 : 98 u molecular mass
NaOH : 40 u molecular mass
K2SO4 : 174 u molecular mass
😊😊✌
H2SO4 ka 98 kaise aaya.. pls Bata do na...
H2SO4 : (1) *2 + 32 + (16) *4
2 + 32 + 64
98
@@finearts6054 Thank u yaar..🤗
@@utkarshsoni5443 it's ok 😊
Thank u
Sir, the way you are as a teacher, YOU ARE PERFECT! No need of any change in your teaching style! Blessed to be taught by you!
27:48 Sir tungsten ka to mera book me nhi diya h
Abe toh iss duniya mein exist toh karta hai na / google pe search maro or periodic table prefer karo 😑
👉You do very hard work for us 👍👍👈
2:49 Divine's brother 😀..
Best Teacher in the world
Important note: make notes of every lesson you are listening in RUclips trust me it will help alot if not you are going to forget about it and you have to rewatch the whole video again, i did the same mistake and here I am learning again but this time I'm taking full notes and revise those notes constantly so you will never forget about it and sir I really love your explanation without you i really wouldn't have done science since I was doing online classes I didn't focus much and I'm struggling now but thanks to you I got sankranti holidays and I decided to learn the whole portion and I'm almost done with everything and all the concepts are crystal clear to me even the numericals i really love you sir thank you very much!
thanks homie
Thanku
Bro I just know u are a nerd
@@urbanyoutube2645 I just know you be failing in the 80's
@Sanatani...🚩🚩 kya haal chaal?
I am not saying anything else !! your teaching technique is very good and i understand everything in this lesson
Keep it up sir !! :)
😁
@@priyashreekonwar1245 😊😊
Very Nice... Hands up sir👍🙏
53:00 answers
H2so4- 98
NaOh -40
K2so4-174
2:54 most funny part 😂😂😂😂😂
Concentrate to learning not to fun
@@adilrather 😑
@@adilrather fun fact: no play and only work made you a dull chap
@@Soyuzniki21 I agree with that
@@adilrather umm..... could you please shut up cause you seem like that one kid who ruins a everyones fun
Thank you so much sir concept is crystal clear ❤️
you in bhavans
You are from neev batch, physics wallah?
Homework question answer:
No. of moles=0.2 moles
No. of molecules=12.044×10^22
No. of oxygen atoms=24.088×10^22
27:33
Tungsten - W (latin name of tungsten is Wolfram)
itna nahi padhte
@@hkyadav4064 kyu be
Very good keep it up
It is not a Latin name.
@@hkyadav4064 tujhe nahi padhna hai toh mat padh, hume toh padhne de 😂
answer to the last homework question-
no. of moles-0.2 moles
no. of molecules- 12.044*10^22
no. of oxygen atoms- 24.088*10^22
Padhai😁
Impressive ✨
No. Of oxygen give me notes plz
Tungsten scientific name is "Wolfram"
It is denoted by capital letter "W"
Thanks
👍👍💯
All clear 👍
The symbol of Tungsten is 'W' which is taken from the Latin name of Tungsten i.e. Wolfram.
The sound of writing on the board is so......satisfying.
It gives goosebumps
Haha
😂 haha relatable
😂😝
one of my best teachers who made science easy for me
Right bro 😉
Hmm right 😁😉
Very true
😀
22:44 Haaji sir, je baar mere dimag mein fit ho gai hai.
👇
Edumantra is best channel ever 🥰🥰