Question

You have 22.1 grams of magnesium chloride.

Find...

1. the number of moles of magnesium
2. the number of atoms of magnesium

Answer 1

Are they 0.232 moles and 1.3975 X 10^23 atoms?

Answer 2

No.of.moles=given wt./molecular wt
no. of atoms=no. of. moles* 6.023*(10^23)

Answer 3

The molar mass is 95.211 g/mol.
22.1/95.211 = 0.232

Answer 4

Is that correct @priyar ?

Answer 5

yes..but what you have obtained is the no.of. moles of MgCl2

Answer 6

Luckily, In this case no. of. moles of MgCl2=no of moles of Mg since one mole of Mg is present in every one mole of Mgcl2....got it @a1234 ?

Answer 7

Yes...I thought so. Thanks

Answer 8

you are welcome!