Getting sugar to dissolve can be difficult, and if you've every worked with dry malt extract you know how messy it can be. The easiest priming sugar that I have found is corn syrup. It dissolves easily in water, is available without a trip to the local home brew store, and ...
The brand that I buy is 12g of sugar in 2 tablespoon. To carbonate 5 gallons of beer at 2 volumes of CO2 3 oz of corn sugar is required. That's 87 grams of dextrose. So that's 14 table spoons, or 0.9 cups. Each cup of corn sugar weighs 326 grams. Therefore, 295 grams of corn syrup are required to carbonate 5 gallons of beer. Whew! I'm glad that math is over. Here is a table so that no one has to go through that again.