How many units of alcohol in a 70 centiliter 40 proof scotch whiskey?

Alcohol units = Volume of drink (in milliliters) × ABV(%) / 1,000.

Given that the volume of the scotch whiskey is 70 centiliters and the ABV is 40% (which is equivalent to 0.4), we can calculate the number of alcohol units as follows:

Alcohol units = 700 mL × 0.4 / 1,000

= 28 units

Therefore, there are 28 units of alcohol in a 70 centiliter 40 proof scotch whiskey.