A sample of 5.00 g of calcium carbonate (CaCO3\text{CaCO}_3CaCO3) is heated strongly in an open crucible. Upon complete thermal decomposition, 2.80 g of solid calcium oxide (CaO\text{CaO}CaO) remains in the crucible.
CaCO3(s)→CaO(s)+CO2(g) \text{CaCO}_3(\text{s}) \rightarrow \text{CaO}(\text{s}) + \text{CO}_2(\text{g}) CaCO3(s)→CaO(s)+CO2(g)What mass of carbon dioxide gas (CO2\text{CO}_2CO2) has escaped into the atmosphere?
1.10 g1.10\text{ g}1.10 g
2.20 g2.20\text{ g}2.20 g
2.80 g2.80\text{ g}2.80 g
7.80 g7.80\text{ g}7.80 g