The molar mass of o2 is 32.00 g/mol. how many moles of hgo are needed to produce 250.0 g of o2?

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.

it would be d. henry moseley

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