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leonid [27]
3 years ago
8

Mercury(II) oxide (HgO) decomposes to form mercury (Hg) and oxygen (O2). The balanced chemical equation is shown below.

Chemistry
2 answers:
Andreas93 [3]3 years ago
8 0

Answer:

15.63 moles of HgO are needed to produce 250.0 g of O_{2}

Explanation:

According to given balanced equation, 1 mole of O_{2} is produced from 2 moles of HgO.

Number of moles =\frac{mass}{molar mass}

So 250 g of O_{2} =\frac{250}{32}moles O_{2}

So moles of HgO needed =2\times \frac{250}{32}moles HgO

                                                   =15.63 moles HgO

____ [38]3 years ago
5 0
The answer to the question is C. 15.63
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