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26 August, 11:12

A chemist determines by measurements that. 070 moles of hydrogen gas participate in a chemical reaction. Calculate the mass of hydrogen gas that participates. Round your answer to significant digits.

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Answers (2)
  1. 26 August, 12:08
    0
    Answer: 0.14g

    Explanation:

    Mass conc. = n x molar Mass

    Mass conc. = 0.070 x 2 = 0.14g
  2. 26 August, 13:03
    0
    The mass of hydrogen gas that participates is 0.14 grams

    Explanation:

    Step 1: Data given

    Moles of H2 = 0.070 moles

    Molar mass H2 = 2.02 g/mol

    Step 2: Calculate the mass of hydrogen gas

    Mass of H2 = moles H2 * molar mass H2

    Mass of H2 = 0.070 moles * 2.02 g/mol

    Mass of H2 = 0.14 grams

    The mass of hydrogen gas that participates is 0.14 grams
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