Question #1b1d1

1 Answer
Feb 12, 2018

Answer:

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"#