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Flauer [41]
3 years ago
11

An unknown compound contains only carbon, hydrogen, and oxygen (cxhyoz). combustion of 3.50 g of this compound produced 5.13 g o

f carbon dioxide and 2.10 g of water.how many moles of hydrogen, h, were in the original sample?
Chemistry
1 answer:
harkovskaia [24]3 years ago
4 0

The formula for determining the number of moles is:

number of moles = \frac{mass}{molecular weight}

Mass of compound = 3.5 g

Mass of carbon dioxide produced = 5.13 g

Mass of water produced = 2.10 g

Molecular weight of water, H_2O = 18 g/mol

Substituting the values in above equation:

number of moles = \frac{2.10 g}{18 g/mol}= 0.11667 mole

Since, 1 mole of water contains 2 moles of hydrogen therefore, number of moles of hydrogen = 0.11667 mole\times 2 = 0.23334 mole


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