Find the molar mass of the compound Mg(NO3)2, given the following information.

Question

The molar mass of a compound is the sum of the molar masses of each atom in the compound. Find the molar mass of the compound Mg(NO₃)₂, given the following information. Round your answer appropriately.

Element	Molar mass (g/mol)
Magnesium	24.305
Nitrogen	14.007
Oxygen	15.999

Molar mass =

______ g/mol

Answer 1

Molar mass of Mg(NO3)2 = molar mass (atomic mass) of all the elements in the compound

1 Mg = 1 x 24.305 = 24.305

2 N = 2 x 14.007 = 28.014

6 O = 6 x 15.999 = 95.994

Total (add it up) = 148.313 g/mole