Can someone check my answer and let me know me if the are right or wrong.

Question

1. What is the maximum amount of KCl that can dissolve in 600 g of water? (The solubility of KCl is 34 g/100 g H₂O at 20°C.) *
34 g
204 g *****
2040 g
3. (1 point) If the solubility of a gas in water is 5.0 g/L when the pressure of the gas above the water is 2.5 atm, what is the pressure of the gas above the water when the solubility of the gas is 1.0 g/L? *
0.50 atm ****
1.0 atm
10 atm
4. (1 point) What is the molarity of a solution that contains 2 moles of solute in 4 liters of solution? *
0.5 M
0.75 M
1 M ****
5. (1 point) What mass of Na₂SO₄ is needed to make 1.8 L of 3.0 M solution? (Na = 23 g; S = 32 g; O = 16 g) *
142 g
767 g ****
1,534 g
7. (1 point) Colligative properties are directly related to the ____. *
freezing point of a solute
nature of the solvent ****
number of solute particles in a solution
9. (1 point) Which of the following is an Arrhenius base? *
CH₃COOH ****
HSO₄⁻
LiOH
10. (1 point) A Lewis base is a substance that can ____. *
accept a hydrogen ion
donate a hydrogen ion
donate a pair of electrons ****
11. (1 point) Which compound is amphoteric and can act as both a Brønsted-Lowry acid and a Brønsted-Lowry base? *
hydrochloric acid ****
sodium hydroxide
water
13. (1 point) The products of the self-ionization of water are _______. *
OH⁻ and OH⁺
OH⁺ and H⁻ ****
OH⁻ and H⁺
14. (1 point) What type of solution is one with a pH of 10? *
acidic
basic
The type varies depending on the solution ****
15. (1 point) The base dissociation constant is only found for ________. *
Dilute bases ****
Strong bases
Weak Bases
16. (1 point) A 18M solution of an acid that ionizes only slightly in solution would be termed_________. *
concentrated and weak
strong and dilute
dilute and weak ****