blanced the following equation 1.sodium metal react with water to form sodium hydroxide and hydrogen gas 2. silver bromide on exposure to sun light decomposes into silver and bromine 3. calcium carbonate on reaction with hydrochloric acid gives calcium chloride ,water and carbon dioxide.
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2Na + 2H2O = 2NaOH + H2
AgNO3=Ag + NO3
CaCO3 +HCl =CaCl2+CO2+H2O
AgNO3=Ag + NO3
CaCO3 +HCl =CaCl2+CO2+H2O
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