For this section, give every answer to three decimal places.
Calculate the mass of carbon contained in $0.352\text{ g}$ of $\text{CO}_2$. Use this result to calculate the amount, in moles, of carbon atoms contained in $0.240\text{ g}$ of A.
Calculate the mass of hydrogen present in $0.144\text{ g}$ of $\text{H}_2\text{O}$. Use this result to calculate the amount, in moles, of hydrogen atoms present in $0.240\text{ g}$ of A.
Use your answers to calculate the mass of oxygen present in $0.240\text{ g}$ of A. Use this result to calculate the amount, in moles, of oxygen atoms present in $0.240\text{ g}$ of A.
Use your answers to (a) to calculate the empirical formula of A.
A $0.148\text{ g}$ sample of A was vapourised at $60^\circ\text{C}$ and the vapour occupied $67.7\text{ cm}^3$ at a pressure of $101\text{ kPa}$.
Use the general gas equation $pV = nRT$ to calculate $M_r$ of A.
Hence calculate the molecular formula of A.
Compound A is a liquid that does not react with 2,4-dinitrophenylhydrazine reagent or with aqueous bromine. Suggest two structural formulae for A.
Compound A is made up only of carbon, hydrogen and oxygen. Explain how the information on the opposite page about the reaction of A with CuO confirms this statement.