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Calculate the mass of propylene glycol (C3H8O2) that must be added to 0.330 kg of water...

Calculate the mass of propylene glycol (C3H8O2) that must be added to 0.330 kg of water to reduce the vapor pressure by 2.88 torr at 40 ∘C (PH2O at 40 ∘C=55.3torr).

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