# hydrocarbons

1. ### Partial Pressure of Gases Question! URGENT PLEASE!?

Hi! I am new to this forum so bear with me please :) I have this Inorganic A-Level Chemistry Question about Dalton's Law of Partial Pressure: A mixture of gases containing 70cm3 of propane, C3H8 and 50cm3 of propene, C3H6, were exploded with 3.0dm3 of air containing 21% oxygen, at a pressure...
2. ### Numbering hydrocarbon branches - QUICK HELP APPRECIATED!

Hi! I've been given the alkene "3-ethyl-4-propylheptane". I found nothing wrong in the name, however, the 4-prefix (before propyl) is unnecessary since if the propyl would be sitting on ANY other carbon, the longest carbon chain would change and it would no longer be a heptane. My question is...
3. ### Unsaturated Hydrocarbons

Which of the following statement applies to unsaturated hydrocarbons: a) the names of the compounds end in ene b) the prefix butyl denotes three carbon atoms c) the are quite unreactive d) the most characteristic type of reaction is substitution e) all of the C-C bonds are single bonds
4. ### Reactions of Hydrocarbons

I have a question where you have to classify each of the following reactions as one of the following reaction types: addition, substitution, hydrogenation, halogenation or combustion, and then write the names and structures for the reactions and products. One question says "ethyne + Cl2-->". So...