1. A beverage contains 12% alcohol, which means that?
A. Tha solution contains 12mL of alcohol in 50mL of water.
B. The solution contains 12mL of alcohol in 70mL of water.
C. Tha solution contains 12mL of alcohol in 100mL of water.
D. The solution contains 12mL of alcohol in 200mL of water.

2. A 100mL wine sampie contains 75mL of ethanol. What is the percentage by volume concentration of ethanol in the wine sample?
A. 7.5% ethanol
B. 75% ethanol
C. 10% ethanol
D. 100% ethanol

3. A sterling silver item is 90.0% siver by mass. This means that:
A. 90g is silver and 10g is another metal (usually copper)
B. 10g is silver and 90g is another metal (usually copper)
C. 40g of the jewelry is pure silver and 60g is another metal.
D. 90g of the jewelry is pure silver and other metals.

4. What is the percent by mass concentration of a solution that contains 50.0g of sugar dissolved in 150g of water?
A. 30.33%
B. 31.33%
C. 32.33%
D. 33.33%

5. Brass is a copper-zinc alloy. If tge concentration of zinc is relatively low, the brass has a golden color and is often used for inexpensive jewelry. what is the percent by mass of zinc in brass if a 35.0g pendant contains 2.2g of zinc?
A. 4.7%
B. 5.8%
C. 6.3%
D. 7.4%

(answer it correctly please po thanks in advance)​​