How many formula units make up 16.2 g of magnesium chloride?

1 Answer
Feb 8, 2017

Answer:

#"No. of formula units"# #-=# #(16.2*g)/(95.21*g*mol^-1)xxN_A.......#

Explanation:

#..."where "N_A="Avogadro's number", 6.022xx10^23*mol^-1#.

The question might have asked how many ATOMS there were in such a mass; how would this answer be different?