The molar mass of hgo is 216.59 g/mol. the molar mass of o2 is 32.00 g/mol. how many moles of hgo are needed to produce 250.0 g of o2?

Given:

Molar mass HgO is 216.59 g/mol

molar mass of O2 is 32.00 g/mol

250.0 g of O2

Required:

Moles of HgO

Solution:

Balanced equation is:

2HgO → 2Hg + O2

250g O2 (1 mole O2/32.00 g/mol O2)(2 moles HgO/1 mol O2) = 15.63 moles HgO

the answer is:  

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