Question

Answer Q.8 as fast as possible

I will mark brainliest to the best answer

Answer 1

compound A  Calcium carbonate  (CaCO3)

colourless gas B    CO2

CaCO3+H2SO4------> CaSO4 +CO2  +H2O

compound X  copper   Cu

compound  Y  CuO

2Cu+O2---->2CuO

Answer 2

a) A is CaCO3
B is carbon dioxide ( CO2)

CaCO3 + H2SO4 → CaSO4 + CO2 + H2O

Ca(OH)2 + CO2 → CaCO3 + H2O

b) i) X is copper
Y is copper oxide
ii) 2 processes are :
oxidation nd reduction
iii) 2Cu + O2 → 2CuO
CuO + H2 → Cu + H2O
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hope this helps!!!