For each example, identify if the food contains mostly saturated or unsaturated fatty acids. Vegetable oil, which is a liquid at room temperature, is used in making cake batter.
Chocolate, which is solid at room temperature, is derived from a seed.
Butter, which is a solid at room temperature, is often used in cooking.
The oil inside flaxseed oil pills is liquid at room temperature.

1. Vegetable oil, which is a liquid at room temperature, is used in making cake batter. Unsaturated

2. Chocolate, which is solid at room temperature, is derived from a seed. Saturated

3. Butter, which is a solid at room temperature, is often used in cooking. Saturated

4. The oil inside flaxseed oil pills is liquid at room temperature. Unsaturated

Explanation:

Saturated fats are those kinds of fat that do not have a double bond between their carbon atoms when represented structurally. At room temperature, they tend to assume the solid-state, and they are mostly obtained from animal sources. Unsaturated fats do have a minimum of one double bond between their carbon atoms and tend to assume the liquid phase. They are mostly obtained from plant sources.

1. Vegetable oil is obtained from a plant source and is, therefore, unsaturated fat.

2. Chocolate even though it comes from cocoa is solid at room temperature and is mostly comprised of saturated fat.

3. Butter a solid at room temperature is mostly made up of saturated fat and is sourced from animals.

4. Flaxseed oil obtained from a plant source is mostly unsaturated fat.

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.