Chemistry, 17.01.2020 22:31 junior1391
Humans started using elemental copper about 6000 years ago and started using elemental tin about 3800 years ago. use the heat of formation values for copper c (ii) oxide and tin (iv) oxide to explain why humans were able to use elemental copper before they were able to use elemental tin.
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Humans started using elemental copper about 6000 years ago and started using elemental tin about 380...
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