Question #1b1d1

1 Answer
Feb 12, 2018

The number of moles in 19.82 g of Mg = 0.815 mol

Explanation:

n = m/M

where n = number of moles, m = given mass, and M = molar mass.

n = "19.82 g"/"24.3 g/mol"

n= "0.815 moles"