a 37.4 mL sample of H2 at STP would contain how many grams of hydrogen?

please help me i have a chemistry test on this tomorrow!

1 Answer

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  • Al
    Lv 7
    8 years ago
    Best Answer

    22.4 L/mol at STP

    moles = vol / 22.4

    moles = 0.0374 L / 22.4 L = 0.00170 moles

    mass = moles x molar mass

    mass = 0.00170 moles x 2.02 g/mol = 0.00337 g

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