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What is the vapor pressure (in mmHg) of a solution of 16.0 g of glucose (C6H12O6) in 84.0 g of methanol (CH3OH) at 27°C? The vapor pressure of pure methanol at 27°C is 140 mmHg.
a) 112 mmHg
b) 128 mmHg
c) 140 mmHg
d) 168 mmHg