It depends on the size of the jar. You can usually find this information on the back of the label.
There are about 57 calories in one tablespoon of mayonnaise.
There is no sugar in mayonnaise.
A 'canister' of salt may be any size. I have seen 8, 12 and 16 ounce canisters.
There are 16 tablespoons in one cup.
There are 2 tablespoons in one fluid ounce.
64 tablespoons in a quart.
There are 4 tablespoons in one quarter cup
That is 2 tablespoons.
32 tablespoons in a pound of water
That is approximately 68.892 tablespoons.
4 tablespoons = quarter cup
16 tablespoons to a cup, 8 tablespoons to half a cup