What is the total pressure exerted by a mixture of 0.45 kg mole of benzene, 0.44 kg mole of toluene and 0.23 kg mole of o-xylene at 100C, if their vapor pressures at 100C are 1340, 560 and 210 mmHg respectively ?
A. 780.5
B. 880.5
C. 801.5
D. 756.2
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