Question

What is the mass percent of chlorine in chloroform (chcl3)? (the molar mass of c = 12.01, h = 1.0079, and cl = 35.45. )

Answer 1

Molar mass CHCl₃= 12.01 + 1.0079 + 35.45 x 3 = 119.3679 g/mol

119.3679 g ----------- 100%
106.35 g Cl ----------- ?%

Cl = 106.35 x 100 / 119.3679

Cl = 10635 / 119.3679

Cl = 89.09%