Multiple Choice: Choose the letter of the correct answer. Write your answer on your paper.

1.For an aquarium to maintain a salt concentration similar to ocean, it must contain 50 grams sodium chloride per 100 grams of water. What is the Given in the problem *

a. Solute: 50 grams solvent: 150 grams
b. Solute: 50 grams solvent: 100 grams
c. Solute: 150 grams solvent :100 grams
d. Solute: 50 grams solvent :50 grams

2.For an aquarium to maintain a salt concentration similar to ocean, it must contain 50 grams sodium chloride per 100 grams of water. What is percent by mass? *

a. 50%
b. 33.33%
c. 100%
d. 150%


3. Calculate the percent by mass of 4.35 grams of sugar dissolved in 105 grams of water. In this problem what is required?

a. percent by volume
b. percent by mass
c. mass of sugar
d. mass of water

4. What is the percent by volume of ethanol that contains 60 ml of ethanol dissolved in 200 ml of water?

a. 23.08%
b. 22.11%
c. 60.00%
d. 20.00%

5. What is the percent by volume of ethanol that contains 20 ml of ethanol dissolved in 100 ml of water? *

a. 16.67%
b. 15 %
c. 20 %
d. 100%




pls pasagot ng tama hindi puro pa gag-o​