In an experiment, a mixture of two gases occupies a volume of 3.00 L at a temperature of 22.5 degree centigrade. The mixture contains 14.0 g of water, 11.5 g of oxygen, and 37.3 g of nitrogen. Calculate the total pressure and the partial pressure of each gas?

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  2. Do we assume the H2O is liquid and it occupies no volume. Convert grams of each gas to mols (mols = grams/molar mass) and use PV = nRT to calculate pressure of each gas. Sum of the partial pressures will give Ptotal.

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