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.
As with all alcohol, Captain Morgan does have calories. A 1 oz shot of Captain Morgan has about 60 calories, according to the Drinks Mixer website. That compares to 69 calories per shot in other brands of spiced rum and in dark rum. Many brands of spiced rum, including Captain Morgan, are 70 proof. That means they are 35 percent alcohol by volume. Regular rum often is 80 proof, or 40 percent alcohol by volume.