2007-04-12 11:00:40 · 4 answers · asked by BummedBYChemistry 1 in Science & Mathematics ➔ Chemistry
The atomic mass of Cu (63.55) is about 4 times that of O (16.00).
Since the Copper Oxide is 88.9% copper by weight (2.5/2.81) or approximately 8/9. The ratio of copper to oxygen must be 2 to 1. So the formula would be Cu2O
2007-04-12 11:19:05 · answer #1 · answered by ewetaunt 3 · 0⤊ 0⤋
Convert the 2.50 grams of copper into moles using the atomic mass of Cu. In the oxide, you have 0.31 grams of oxygen, right? Convert that to moles by dividing by the atomic mass of O. From those two numbers of moles, you should be able to figure out the formula of the compound.
2007-04-12 11:11:28 · answer #2 · answered by hcbiochem 7 · 0⤊ 0⤋
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2016-12-03 22:24:22 · answer #3 · answered by sechler 4 · 0⤊ 0⤋
CuO
2007-04-12 11:08:18 · answer #4 · answered by mr_maths_man 3 · 0⤊ 0⤋