When green copper(II) carbonate is heated, it undergoes thermal decomposition to form black copper(II) oxide and carbon dioxide gas:
CuCO3(s)→CuO(s)+CO2(g) \text{CuCO}_3(\text{s}) \rightarrow \text{CuO}(\text{s}) + \text{CO}_2(\text{g}) CuCO3(s)→CuO(s)+CO2(g)In an experiment, a student heats 6.200 g of copper(II) carbonate. After the reaction is complete, the mass of the remaining solid copper(II) oxide is 3.980 g.
Calculate the mass of carbon dioxide gas that has been released into the atmosphere. Give your answer to three significant figures.
