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Question

A 15.0 g sample of copper carbonate is heated to form 9.65 g of CuO and 5.34 g CO2.
What is the empirical formula of this copper carbonate sample?

A
Cu2CO3
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B
CuCO3
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C
CuCO
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D
Cu3CO3
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Solution

The correct option is B CuCO3
copper carbonate CuO+CO2
15xgm 9.6579.54=0.12
5.3444=0.12
copper carbonate is o.12 mol
so 15x = 0.12
the x is 150.12=125
B is right option

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