(a)[2]
Alkenes are obtained by cracking. State what the term cracking means.
(b(i))[1]
Margarine is produced from vegetable oils with a nickel catalyst. Name the additional reactant in this reaction.
(b(ii))[1]
Indicate the sort of chemical reaction that takes place when margarine is made from vegetable oils.
(c)[1]
Ethanol is formed when ethene reacts with steam. Write the equation for this reaction.
(d)[2]
A compound contains $54.5\%$ carbon, $9.10\%$ hydrogen and $36.4\%$ oxygen by mass. Calculate its empirical formula.