Consider this mixture of four pure substances: solid iodine, sand, iron filings, and salt (nacl) a) you might need to look up some physical properties of the substances in the mixture described above. b) write a proposed procedure to use physical methods to separate all of the components of the mixture from one another. c) list the physical property (or differences in physical properties) that is being used in each separation step

The second and last option are the answers

The answer to the question: choose the correct statement.  a) when ethane reacts with fluorine gas the product is less stable.b) addition reactions of unsaturated hydrocarbons and halogens requires a high activation energy.  c)the double covalent bond within unsaturated hydrocarbons requires a lot of energy to break.  d)the double covalent bond within unsaturated hydrocarbons can be broken easily.is: a) when ethane reacts with fluorine gas the product is less stable.

The answer is falsegravitational force is independent of medium and depends only on the masses of the two objects and the distance between them.