Stoichiometry
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 100°C, if their vapor pressures at 100°C are 1340, 560 and 210 mmHg respectively?

801.5
780.5
756.2
880.5

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Stoichiometry
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the

Temperature & pressure
Number of intermediate chemical reactions involved
State of aggregation & the state of combination at the beginning & the end of the reaction
None of these

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