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5. Determine the molar mass of chloroform gas if a sample weighing 0.389 g is collected in a flask with a volume of 102 cm3 at 97C. The pressure of the chloroform is 728 mmHg.

A. 187 g/mol
B. 121 g/mol
C. 112 g/mol
D. 31.6 g/mol
E. 8.28  10-3 g/mol