Question

pls help me answer this question my friends

Answer 1

CACO3 + 2HCL ----------》 CACL2 + H20 + CO2

CACO3 US METAL COMPOUND A

CO2 IS THE EFFERVESENCE

Answer 2

Answer : CaCO3 + HCl -> CaCl2 + CO2 + H2O

CO2 is the gas that produces effervescence and extinguishes the burning candle

Metal compound A is calcium carbonate (CaCO3)