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17 September, 20:42

A compound is known to contain 46.45% carbon and 20.61% oxygen by mass. each molecule contains two atoms of oxygen. what is the molar mass of this substance?

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  1. 17 September, 22:32
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    The compound is made of 2 oxygen molecules and the oxygen made of 20.61% its mass. If the molar mass of oxygen is 16, the molar mass of the compound will be:

    2 * oxygen * (16g/mol / oxygen) = 20.61% compound mass

    compound mass = 32g/mol / 20.61%

    compound mass = 155.26 g/mol
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