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20 January, 16:53

The molar mass of O2 is 32.00 g/mol. How many moles of HgO are needed to produce 250.0 g of O2?

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  1. 20 January, 17:12
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    the moles would be 7.8125

    divide 250g/32g/mol = 7.8125

    Its a 1 to 1 mole ratio between O2 and HgO so they are the same number of moles.
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