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2 December, 09:09

Convert 3.00 moles As2S3 to grams.

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Answers (2)
  1. 2 December, 11:11
    0
    738.1146 grams, your're welcome
  2. 2 December, 13:02
    0
    738 grams

    Explanation:

    As2S3 is called Arsenic Sulfide.

    The formula needed here is

    Number of moles (n) = m : mm

    where m = mass of the substance/compound

    mm = molar mass of the same substance/compound

    Here, the number of moles has been given to be 3 moles, we can determine the molar mass of the substance from the chemical formula given, hence our unknown is the mass of the compound.

    Molar mass of Arsenic (As) is 75 g/mol while that of Sulfur is 32 g/mol.

    Hence, the molar mass of the compound; As2S3 will be

    (75 x 2) + (32 x 3) = 246 g/mol

    From the formula given earlier, we can deduce that mass of As2S3 will be number of moles multiplied by molar mass of As2S3

    m = n x mm

    m = 3 x 246

    m = 738 grams
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