Ineed the answers to these 4 questions can you .

1. in a solution of a carbonated beverage, the dissolved carbon dioxide is the
a. saturated b. solvent c. solute d. precipitate

2. in a solution of carbonated beverage, the water is the
a. saturated b. precipitate c. solute d. solvent

3. which of these is a pure substance? a. diamond b. salt c. ocean water
a. a b. a and b c. b and c d. all of them

4. what will happen if you add more solute to a saturated solution?
a. it will remain undissolved in the container.
b. it will increase the concentration.
c. it will become solvent.
d. it will dissolve.

1. C

2. D

3. B

4. A

Explanation:

1 and 2. In solutions there are 2 or more pure substances mixed evenly. The substance in major proportion (and the one that defines the physical state of the solution) is called solvent. The rest of the substances are known as solutes. Water is considered a universal solvent, so when it is present, it is always the solvent. All in all, carbon dioxide is a solute and water is the solvent.

3. A pure substance is a form of matter with a definite constant composition, as it can be seen in its formula, and has distinct chemical properties. Diamond is a pure substance and its formula is C(d). Salt is also a  pure substance and its formula is NaCl. Ocean water does not have a formula because it is not a pure substance but a mixture of them and its properties depend on the proportion of each component. The correct option is B.

4. A saturated solution is one that has dissolved the maximum theoretical amount of solute at a certain temperature. If more solute were added, it could not be dissolved and it would precipitate. The correct option is A.

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)