Calculate the mass of metal carbonate used.
Calculate the total change in mass of the contents of the test-tube after heating.
Explain why the student heats the metal carbonate three times.
Explain why there is a change in mass during heating.
The $M_r$ of carbon dioxide is $44$. Use your result from (a)(ii) to work out the amount of carbon dioxide produced in the reaction.
Use the equation $\text{MCO}_3\text{(s)} \rightarrow \text{MO(s)} + \text{CO}_2\text{(g)}$ to calculate the number of moles of metal carbonate used in the experiment.
Use your answers to (a)(i) and (c)(iii) to calculate the mass of one mole of the metal carbonate.
Calculate the $A_r$ of metal $M$. Use $[A_r: \text{C},12; \text{O},16]$
Name the apparatus used to collect the carbon dioxide.
State the volume of carbon dioxide collected.
Calculate the number of moles of carbon dioxide collected. [$1$ mole of any gas at room temperature and pressure takes up $24\,\text{dm}^3$]
Suggest a reason why method $2$ is less accurate than method $1$.
Identify a hazard in method $2$ and suggest a safety precaution to reduce the risk associated with this hazard.