A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

For element Cl a) Calculate the number of moles in 9.36g b) Calculate the number of grams of 0.104 mol c) How many moles are there in 9.56x10^22 atoms of the element?

  • This Question is Closed
  1. cuanchi
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You need to know the atomic mass of the Cl element. You can find it in a periodic table a) you can have a conversion factor 1 mol Cl = atomic mass of Cl and multiply your 9.36g by the conversion factor. b) Whith the inverse conversion factor from a you can calculate the g in 0.104 mol c) you will need the Avogadro's number (6.02 x 10^23) to calculate this value

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    for a i got 0.246 does this seem correct @cu

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Cuanchi

  4. abb0t
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    This type of thought process is considered dimensional analysis. Here is how you set it up, \(\sf always\): \(\sf \color{red}{given} \times \frac{units~you~want}{units~of~given} = \color{blue}{want}\)

  5. abb0t
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    For a, you are given 9.36 grams so 9.36 grams is what you're given. Now, look at your periodic table. Remeber the units on the periodic table are given in grams PER mole, which means: \(\sf \color{red}{\frac{grams}{mole}}\) so if you want \(\sf moles\) you should FLIP the units. Which means, you'll be dividing by the grams you find on the periodic table. \(\sf grams~of~Cl \times \frac{moles}{grams}\) notice units of grams will cancel it. it is the same as algebra, as if you had \(\sf a \times \frac{b}{a} = b\)

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I got a i need help with b @abb

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @abb0t

  8. abb0t
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You're basically doing the opposite. But same process. Still focusing on the element Chlorine.

  9. abb0t
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Refer to your periodic table. If you don't have one, use this: http://www.ptable.com/

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

    a) 9.36/35.45= 0.264 mol

  11. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.