When magnesium carbonate is heated it thermally decomposes.
MgCO3(s)→MgO(s)+CO2(g) \text{MgCO}_3(\text{s}) \rightarrow \text{MgO}(\text{s}) + \text{CO}_2(\text{g}) MgCO3(s)→MgO(s)+CO2(g)When 7.550 g of magnesium carbonate is heated, the mass of solid remaining is 3.600 g.
Calculate the mass of carbon dioxide that has been released.
Give your answer to three significant figures.