This question is about hydrocarbons. A hydrocarbon has the formula C15H32\text{C}_{15}\text{H}_{32}C15H32.
How many atoms are there in one molecule of C15H32\text{C}_{15}\text{H}_{32}C15H32?
What is the general formula of the homologous series to which C15H32\text{C}_{15}\text{H}_{32}C15H32 belongs?
The hydrocarbon C15H32\text{C}_{15}\text{H}_{32}C15H32 can be cracked to produce one molecule of nonane (C9H20\text{C}_9\text{H}_{20}C9H20) and three molecules of another compound, YYY. Complete the carbon and hydrogen balance to find the molecular formula of YYY in the reaction:
C15H32→C9H20+3Y \text{C}_{15}\text{H}_{32} \rightarrow \text{C}_9\text{H}_{20} + 3 Y C15H32→C9H20+3Y12 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.