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How many moles of mercury 2 oxide are needed to produce 125 grams of oxygen

User Kingof
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1 Answer

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2 HgO >> 2 Hg + O2
moles O2 = 125 g / 32 g/mol =3.91
the ratio between HgO and O2 is 2:1
moles HgO needed = 2 x 3.91 =7.82
Hope this helps!
User Kien Chu
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