Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ashna

calculate the number of atoms in (a) 52 moles of He (b) 52 g of He (c) 52 u of He

  • one year ago
  • one year ago

  • This Question is Closed
  1. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    @waterineyes :D

    • one year ago
  2. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    This site is not properly working for me.. So I did not get your messages...

    • one year ago
  3. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    oh .. :/

    • one year ago
  4. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    so .. you know to do this ?

    • one year ago
  5. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    Let us try..

    • one year ago
  6. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    okay :)

    • one year ago
  7. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    1 mole of He = \(6.023 \times 10^{23} \) atoms of He

    • one year ago
  8. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    okay !

    • one year ago
  9. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    So find for 52..

    • one year ago
  10. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    okay .. i'll try :)

    • one year ago
  11. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    Mention my name here I want to check I am getting notifications or not..

    • one year ago
  12. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    @waterineyes

    • one year ago
  13. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    No I am not getting any..

    • one year ago
  14. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    I am not able to see my Smart Score too and my username is written in red also no green..

    • one year ago
  15. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1345194842168:dw|

    • one year ago
  16. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    blame the site :P

    • one year ago
  17. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    i wrote 52 its not seen

    • one year ago
  18. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    is it right to carry on ?

    • one year ago
  19. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes you have to just multiply 52 with that Avagadro number.. What do you get on solving ??

    • one year ago
  20. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes you are right have faith on yourself and carry on I am here to check your mistakes..

    • one year ago
  21. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    Oh wow playing hide and seek with me @ashna .. Where have you gone ???

    • one year ago
  22. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    One thing I want to say that your previous profile pic I like that than your this one..

    • one year ago
  23. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    b> part hint is : 52 g of He: 1 mole of He = 6.023 * 10^{23} atoms 4 g = 6.023 * 10^{23} atoms Solve it for 52 grams..

    • one year ago
  24. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    In third part I am not getting what is u there.. 52 u ??

    • one year ago
  25. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    @waterineyes lol you joke too

    • one year ago
  26. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    some problem with the net .. i said yu that b4 !

    • one year ago
  27. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    hey you turned green :P

    • one year ago
  28. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    what is u ?

    • one year ago
  29. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    okay i changed my profile picture .. atleast now come back :P

    • one year ago
  30. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1345202157654:dw||dw:1345202309858:dw|

    • one year ago
  31. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1345202536931:dw|

    • one year ago
  32. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    is u the atomic unit symbol or something ? am not exactly sure about it but in some part of my brain it is registerd like that !

    • one year ago
  33. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    water water everywhere nor any drop to drink .. n wen yu are not replayin .. i feel like sayn water water onlyn everytym but does not reply to my question :P

    • one year ago
  34. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    a) \(313.04 \times 10^{23}\) atoms b) \(78.299 \times 10^{23}\) atoms.

    • one year ago
  35. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    You have calculated them right @ashna Well Done..

    • one year ago
  36. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    Sorry my internet was creating problem at that time I was not getting any notifications also..

    • one year ago
  37. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    See @ashna : You know atomic mass of He is 4: So: 1 mole of He = \(6.023 \times 10^{23}\)atoms Or 4g = \(6.023 \times 10^{23}\)atoms Here it is 4g.. Look for g here..

    • one year ago
  38. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    Now I am explaining the third case that is 52 u.. There it was g(grams) and now it is u.. Helium has atomic mass of 4g. But if you write it as 4u, then it means 1 atom only.. I mean to say that 4u implies \(\color{red}{\text{One Atom of Helium}}\) Where as 4g implies \(\color{blue}{{6.023 \times 10^{23} \text{Atoms of Helium= 1 Mole of Helium..}}}\)

    • one year ago
  39. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    I give you other example: For Carbon the mass is 12. So: \(\color{green}{12g = 6.023 \times 10^{23} \text{Atoms of Carbon}}\) But: \(\color{magenta}{12u \implies \text{1 Atom of Carbon..}}\)

    • one year ago
  40. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    \(\color{navy}{\text{For third part now:}}\) \(\color{silver}{\text{Helium has atomic mass of 4..}}\) \(\color{cyan}{\mathcal{So:}}\) \(\color{magenta}{4u \implies \text{1 Atom of Helium..}}\) \(\color{pink}{\text{So,}}\) \(\color{orange}{\mathsf{52 u ~\;will~ \; contain ~\; how ~\; many ~\; atoms ??}}\)

    • one year ago
  41. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    \(\frak{\color{green}{\text{ashna},\color{blue}{\text{I suggest you to go through all you have studied about Mole Concept..}}}}\) \(\color{red}{\mathsf{Have \;a \;look \; on \; all \; the \;work..}}\) \(\color{green}{\text{How we solved each and every problem just go through once.}}\) \(\color{magenta}{\text{And if you have any doubt then let me know..}}\)

    • one year ago
  42. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    okay :) .. n loads of thanks for your help :)

    • one year ago
  43. ashna
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1345254579291:dw|

    • one year ago
  44. waterineyes
    Best Response
    You've already chosen the best response.
    Medals 2

    Yep..

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.