Question

46.What is the percentage by mass of a 15g of sugar dissolved in a 45g of water?

A. 3%

B. 33%

C. 25%

D. 75%

47. What is the percentage by volume of 24mL of isopropyl alcohol in a volume of 144mL solution?

A. 6%

B. 14%

C. 17%

D. 60%

48. What is the percentage by mass of sodium hydrogen carbonate that has 20 grams of solute in 600mL of water?

A. 3.33%

B. 3.20%

C. 3.45%

D. 3.23%

49. What is the percentage by volume of ethanol that contains 35mL of solute dissolved in 115mL of water?

A. 23. 33%

B. 30.40%

C. 48.0%

D. 80.0%

50. Corona virus can be killed by using a 70% concentrated alcohol solution. If the volume of solution of a brand of alcohol is 700mL. What is the volume of pure alcohol in the container?

A. 490 mL

B. 700mL

10 mL

350mL​

Answer 1

Hey buddy correct answer of your questions

46. C. 25%

47. C. 17%

48. A. 3.33%

49. A. 23.3%

50. A. 490ml

Answer 2

Answer:

46. option C is correct

47. option D is correct

48. option A is correct

49. option A is correct

50. may be option A is correct