Name the substance that reacts with hydrogen in a fuel cell.
Give one advantage and one disadvantage of using fuel cells rather than gasoline in vehicle engines.
Name the process carried out in step 1.
Name the process used in step 2.
Calculate how many hydrogen atoms are present in 44.0 g of the ester methyl propanoate, $\text{CH}_3\text{CH}_2\text{COOCH}_3$.\n\nOne mole of $\text{CH}_3\text{CH}_2\text{COOCH}_3$ contains $6.02 \times 10^{23}$ molecules. State your answer in standard form.\n\nnumber of hydrogen atoms = .................
For each homologous series listed, name a member that has six hydrogen atoms.\n• alkanes\n• alkenes\n• alcohols\n• carboxylic acids
State why alkenes and alkanes are hydrocarbons.
State why alkenes are unsaturated.
Name the catalyst required to change alkenes into alkanes.
Explain why turning alkenes into alkanes is an addition reaction.