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17 December, 01:44

Heating will decompose silver oxide, Ag2O, to silver metal, Ag, plus oxygen gas, O2. How many moles of oxygen gas will form when 4.64 g of solid silver oxide is decomposed? The formula mass of silver oxide is 232 g/mol.

0.100 mol.

0.0200 mol.

0.0150 mol.

0.0100 mol.

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  1. 17 December, 04:41
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    The moles of oxygen gas that form when 4.64 g of solid silver oxide decomposes is calculated as below

    calculate the moles of Silver oxide that decoposed

    moles = mass/molar mass

    = 4.64 g/232 g/mol = 0.02 moles

    write the balanced reacting equation

    2Ag2O = 4 Ag + O2

    from the equation above the reacting ratio between Ag2O to O2 is 2:1, therefore the moles of O2

    = 0.02 x 1/2 = 0.01 moles of oxygen
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