16. Suppose you have 3 grams of salt and 100 1 of water, mixing them together forms an unsaturated solution. In order for the solution to become saturated, what should you do?
A. Add another 100 ml of water.
B. Add 2 small cups of salt, stirring will help.
c. Add salt continuously until it cannot be dissolved.
D. Add small amount of solute than the maximum amount it can hold.
17. An alloy is prepared by mixing 60g copper and 30g zinc. Find the percentage by mass of zinc.
A. 23.33%
B. 33.33%
C.43.33%
D. 53.33%
18. Mark and Aldrin were asked by their mother to wash their clothes. The clothes were stained by food colors. In order to remove the stain, Mark prepared a solution by mixing 20g of Chlorine and 180g of water. What is the concentration of the solute in percentage by mass?
A. 10% C. 30%
B. 25% D.35%
For Item 19-20: Victor prepared an acid solution by mixing 500 cm of water and 100 cm pure sulfuric acid, H2SO, to clean their toilet bowl.
19. What is the percentage by volume of sulfuric acid?
A. 16.67% C. 18.67%
B. 17.67% D. 19%
20. What is the percentage by volume of water?
A. 63.33%
B. 73.33%
C. 83.33%
D. 93.33%
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Answer:
ml kanalang
Explanation:
mag laro ka na ml