mrsheikhnor mrsheikhnor

28-08-2018
Chemistry

contestada

The copper burned in the presence of another substance to form the dark coating on the wire what was that other reactant?
A. Water
B. Oxygen gas
C. Copper oxide
D. Carbon
(The answer is not C I already tried this on the test.)

Respuesta :

zlskfrum zlskfrum

31-08-2018

the ans is B, Oxygen gas

Answer Link

Asdfjkadfjkakjf Asdfjkadfjkakjf

31-08-2018

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

so the other reactant is Oxygen. B

Answer Link

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