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lutik1710 [3]
4 years ago
6

The copper burned in the presence of another substance to form the dark coating on the wire what was that other reactant?

Chemistry
2 answers:
soldier1979 [14.2K]4 years ago
7 0

the ans is B, Oxygen gas


Setler79 [48]4 years ago
7 0

dark coating is CuO so the reaction must be 2Cu + O2 -> 2CuO

so the other reactant is Oxygen. B

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Sydney was organizing a box of resistors by resistance range. She knows that there are several factors that go into determining
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3 years ago
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<u>Answer:</u> The molality of MgF_2 solution is 4.013 m

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The formula used to calculate molarity:

     .....(1)

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