If 20 g of ${\mathrm{CaCO}}_3$ is treated with 20 g of HCl, then how many grams of ${\mathrm{CO}}_2$can be generated with this following equation? ${\mathrm{CaCO}}_{3\left(\mathrm{s}\right)}+2{\mathrm{HCl}}_{\left(\mathrm{aq}\right)}\to {\mathrm{CaCl}}_{2\left(\mathrm{aq}\right)}+{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{l}\right)}+{\mathrm{CO}}_{2\left(\mathrm{g}\right)}$