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7 April, 08:05

Which of the following is a correctly balanced equation? A. 2Cu + O2 - - > 2CuO B. Mg + O2 - - > MgO2 C. 3kCl + HNO3 - - > 3HCl + KNO3 D. CaCO3 - - > CaO + CO3

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  1. 7 April, 09:03
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    2Cu+02 - >2CuO is a correctly balanced equation.
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