the more water vapor in the air the lower the air pressure. Air pressure goes down as the amount of water vapor in the air goes up. How is the temperature related to air pressure? the higher the temperature the lower the air pressure .
80 Proof. Unflavored 80 proof vodka, rum, gin, whiskey and tequila contains 40 percent alcohol and 64 calories per ounce. Add a 4-oz. pour of tonic water to any of these and you will add 112 calories. Use a fruit-infused liquor, like raspberry vodka, and you will add 5 calories per ounce.
The actual number of calories in vodka depends on the amount of alcohol in the variety that you choose. According to CalorieCount.com, there are approximately 97 calories in vodka if you drink a single shot (1.5 ounces) in the 80-90 proof range. So even if vodka tastes light and clean, it still provides as many calories as many other types of alcohol. If you choose a vodka with more alcohol, the number of calories goes up as well. If you drink 100-proof vodka or even 120-proof vodka, the estimated calorie count goes up to 124.