State one use of carbon (IV) oxide, ammonia, and nitrogen gas. Name the organic compounds: CH3C(=O)OCH2CH3 CH3CH2C(=O)OCH2CH2CH3 CH3CH2CH2CH2OH Draw the structural isomers of C5H10.

• a) Carbon (IV) oxide: Used in fire extinguishers to smother flames. $$\boxed{\text{Fire extinguishers}}$$
• b) Ammonia: Used in the manufacture of fertilizers such as urea and ammonium nitrate. $$\boxed{\text{Manufacture of fertilizers}}$$
• c) Nitrogen gas: Used to provide an inert atmosphere for packaging food to prevent spoilage. $$\boxed{\text{Providing an inert atmosphere}}$$

• i) $\text{CH}_3\text{C}(=\text{O})\text{OCH}_2\text{CH}_3$ This is an ester formed from ethanoic acid and ethanol. $$\boxed{\text{Ethyl ethanoate}}$$
• ii) $\text{CH}_3\text{CH}_2\text{C}(=\text{O})\text{OCH}_2\text{CH}_2\text{CH}_3$ This is an ester formed from propanoic acid and propan-1-ol. $$\boxed{\text{Propyl propanoate}}$$
• iii) $\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{OH}$ This is a primary alcohol with a four-carbon chain. $$\boxed{\text{Butan-1-ol}}$$

The formula $\text{C}_5\text