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10 January, 22:17

How many liters of water vapor are in 36.21 g?

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  1. 11 January, 01:17
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    45.02 L.

    Explanation:

    Firstly, we need to calculate the no. of moles of water vapor. n = mass / molar mass = (36.21 g) / (18.0 g/mol) = 2.01 mol. We can calculate the volume of knowing that 1.0 mole of a gas at STP occupies 22.4 L.

    Using cross multiplication:

    1.0 mole of CO occupies → 22.4 L.

    2.01 mole of CO occupies →? L.

    ∴ The volume of water vapor in 36.21 g = (22.4 L) (2.01 mole) / (1.0 mole) = 45.02 L.
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