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2 April, 20:50

How many molecules are in 68.0 g of H2S

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  1. 3 April, 00:13
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    The correct answer is 12.044 * 10²³ molecules.

    The molecular mass of H₂S is 34 gram per mole.

    Number of moles is determined by using the formula,

    Number of moles = mass/molecular mass

    Given mass is 68 grams, so no of moles will be,

    68/34 = 2 moles

    1 mole comprises 6.022 * 10²³ molecules, therefore, 2 moles will comprise = 6.022 * 10²³ * 2

    = 12.044 * 10²³ molecules.
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