Final answer:
True. The amount of pure alcohol in one drink is determined by the percentage of alcohol in the liquor used and the size of the serving.
Step-by-step explanation:
True
The amount of pure alcohol in one drink does depend on the percentage of alcohol in the liquor used and the size of the serving. The percentage of alcohol in the liquor is represented by the term 'proof'. For example, '80 proof' vodka contains 40.0% ethanol by volume. The size of the serving is typically measured in milliliters (mL) or ounces (oz).
When calculating the amount of pure alcohol in a drink, you can multiply the volume of the serving by the percentage of alcohol in the liquor. For example, if a drink contains 40 mL of '80 proof' vodka, you would calculate the amount of pure alcohol by multiplying 40 mL by 40.0%, which equals 16 mL of pure alcohol.