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21 November, 22:30

A chemist determines by measurements that 0.0500 moles of oxygen gas participate in a chemical reaction.

Calculate the mass of oxygen gas that participates. Round your answer to significant digits.

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  1. 21 November, 22:59
    0
    1.60 g

    Explanation:

    A chemist determines by measurements that 0.0500 moles of oxygen gas, that is, O₂, participate in a chemical reaction. The molar mass of oxygen is 32.00 g/mol. We can find the mass corresponding to 0.0500 moles using the following expression.

    m = n * M

    where

    m is the mass

    n are the moles

    M is the molar mass

    m = n * M

    m = 0.0500 mol * 32.00 g/mol

    m = 1.60 g
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