a brown substance x on heating in air forms a substance welfare hydrog

1.	a brown substance x on heating in air forms a substance welfare hydrogen gas is passed over heated why it again change black Into X name the substance X and Y
Answer» Answer: Substance X is COPPER. Substance Y is copper oxide. P.s. Please MARK this as the BRAINLIEST answer. Thank you :)

a brown substance x on heating in air forms a substance welfare hydrogen gas is passed over heated why it again change black Into X name the substance X and Y

Answer»

Answer:

Substance X is COPPER.

Substance Y is copper oxide.

P.s. Please MARK this as the BRAINLIEST answer. Thank you :)