32.7 grams of water vapor takes up how many liters at standard temperature and pressure (273 K and 100 kPa)?

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03-08-2017
Chemistry

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32.7 grams of water vapor takes up how many liters at standard temperature and pressure (273 K and 100 kPa)?

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Louli Louli · Answer 1 · 2017-08-08T18:29:03+02:00

Louli Louli

08-08-2017

Under standard temperature and pressure conditions, it is known that 1 mole of a gas occupies 22.4 liters.

From the periodic table:
molar mass of oxygen = 16 gm
molar mass of hydrogen = 1 gm
Thus, the molar mass of water vapor = 2(1) + 16 = 18 gm

18 gm of water occupies 22.4 liters, therefore:
volume occupied by 32.7 gm = (32.7 x 22.4) / 18 = 40.6933 liters

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