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13 August, 16:55

Determine the number of moles of C5H12 that are contained in 357.4 g of the compound.

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  1. 13 August, 17:13
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    Answer: 4.96 moles

    Explanation:

    C5H12 is the chemical formula for pentane, the fifth member of the alkane family.

    Given that,

    number of moles of C5H12 = ?

    Mass in grams = 357.4 g

    Molar mass of C5H12 = ?

    To get the molar mass of C5H12, use the atomic mass of carbon = 12g; and Hydrogen = 1g

    i. e C5H12 = (12 x 5) + (1 x 12)

    = 60g + 12g

    = 72g/mol

    Now, apply the formula

    Number of moles = Mass / molar mass

    Number of moles = 357.4g / 72g/mol

    = 4.96 moles

    Thus, 4.96 moles of C5H12 that are contained in 357.4 g of the compound.
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