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Answer on Inorganic Chemistry Question for Annie

Question #27995
When a sample of copper oxide is heated in the presence of propane gas, c3h8, three products produce: Co2, H2o and Cu. Using the results below identify the formula of the oxide as copper 1 oxide or copper 11 oxide. Explain you answer by showing all calculations and discussing any laws necessary to support your answer.
Table looks like this:
Items: Masses:
Mass of empty test tube 20.15
Mass of test tube and copper(?) oxide 22.23
Mass of test tube and copper 21.76
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