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24 January, 03:34

How many grams are there in 9.4x10^25 molecules of H2

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  1. 24 January, 04:00
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    You start with 9.4 x 1025 molecules of H2.

    You know that an Avogadro's number of molecules of H2 has a mass of 2.0 g.

    To solve, 9.4 x 1025 molecules H2 x (2.0 g H2 / 6.023 x 1023 molecules H2) = 312. g H2
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