Question

Can someone please help me? Thanks! Problem 7 a. Calculate the number of C atoms in...

Can someone please help me? Thanks!

Problem 7

a. Calculate the number of C atoms in 0.751 mole of C.

b. Calculate the number of SO2 molecules in 4.36 moles of SO2.

c. Calculate the moles of Fe in 5.66x1022 atoms of Fe.

d. Calculate the moles of C2H6O in 2.07x1024 molecules of C2H6O.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

a)
use:
number of atoms = number of moles * Avogadro’s number
= 0.751 * 6.022*10^23 atoms
= 4.523*10^23 atoms
Answer: 4.52*10^23 atoms

b)
use:
number of molecules = number of mol * Avogadro’s number
number of molecules = 4.36 * 6.022*10^23 molecules
number of molecules = 2.626*10^24 molecules
Answer: 2.63*10^24 molecules

c)
use:
number of mol = number of atoms / Avogadro’s number
number of mol = 5.66*10^22 / 6.022*10^23 mol
number of mol = 9.399*10^-2 mol
Answer: 9.40*10^-2 mol

d)
use:
number of mol = number of molecules / Avogadro’s number
number of mol = 2.07*10^24 / 6.022*10^23 mol
number of mol = 3.437 mol
Answer: 3.44 mol

Add a comment
Know the answer?
Add Answer to:
Can someone please help me? Thanks! Problem 7 a. Calculate the number of C atoms in...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT