State the type of reaction occurring when sodium hydrogencarbonate reacts in this way.
Calculate the volume of carbon dioxide produced at room temperature and pressure when 12.6 g of $\text{NaHCO}_3$ is heated by following these steps: • work out the mass of one mole of $\text{NaHCO}_3$ • work out how many moles of $\text{NaHCO}_3$ are used • work out how many moles of carbon dioxide are produced • work out the volume of carbon dioxide produced at room temperature and pressure.
State the formula of: • calcium hydroxide • the white precipitate that is made when limewater turns milky.