Question

* 10 What is the mass in grams of a sample of Mg(CIO3)2 that contains 6.0 x 1020 atoms of oxygen? (A) 31717. grams (B) 3. 152
0 0
Add a comment Improve this question Transcribed image text
Answer #1

10)

1 moles of Mg(ClO3)2 has 6 atoms of oxygen.

So, number of Mg(ClO3)2 = number of O / 6

= (6.0*10^26) / 6

= 1.0*10^26

use:

number of mol = number of molecules / Avogadro’s number

number of mol = 1*10^26 / 6.022*10^23 mol

number of mol = 1.661*10^2 mol

Molar mass of Mg(ClO3)2,

MM = 1*MM(Mg) + 2*MM(Cl) + 6*MM(O)

= 1*24.31 + 2*35.45 + 6*16.0

= 191.21 g/mol

use:

mass of Mg(ClO3)2,

m = number of mol * molar mass

= 1.661*10^2 mol * 1.912*10^2 g/mol

= 3.175*10^4 g

Answer: A

Only 1 question at a time please

Add a comment
Know the answer?
Add Answer to:
* 10 What is the mass in grams of a sample of Mg(CIO3)2 that contains 6.0 x 1020 atoms of oxygen? (A) 31717. grams...
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