if you weighed 14.00 grams of MgCO3 how many moles of MgCO3 did you weigh

Answer 1

NOT 9th grade as the School Subject.

Sra

Answer 2

14.00 grams of MgCO3 how many moles of MgCO3
Mg = 24.3 g/mol
C = 12 g/mol
30 = 3*16 = 48 g/mol
so
MgCO3 = 84.3 g/mol
14/84.3 = .166 mol