How many 1930 silver dollars fit in a gallon?

A 1930 silver dollar weighs approximately 26.73 grams. A gallon of water weighs about 3,785 grams, which means roughly 141 silver dollars (3,785 grams ÷ 26.73 grams per dollar) would fit in a gallon. However, this is a theoretical calculation based on weight, and actual packing may vary due to the coins' size and arrangement.