Which of the following is the correct molar mass of calcium chloride hexahydrate?
A) 75.53 g/mol
B) 111.0 g/mol
C) 117.0 g/mol
D) 183.6 g/mol
E) 219.1 g/mol

Question

Quizplus · Accepted Answer

The molar mass of calcium chloride hexahydrate (CaCl2·6H2O) can be calculated by adding the molar masses of all atoms in the formula: Ca (40.08 g/mol) + 2*Cl (2*35.45 g/mol) + 6*H2O (6*18.015 g/mol) = 40.08 + 70.9 + 108.09 = 219.07 g/mol, which rounds to 219.1 g/mol.

Which of the Following Is the Correct Molar Mass of Calcium