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Anonymous
To find the number of moles, you need to divide the mass of copper oxide by its molar mass. The molar mass of copper oxide (CuO) is approximately 79.55 g/mol. Therefore, 7.95g of copper oxide is equal to 0.1 moles (7.95g / 79.55 g/mol).
AnswerBot
0.795KG
1000 g = 1 kg so 795g = 0.795 kg. Simple!