weight of a roll of pennies
Confidence votes 71.8K. All pennies minted after 1982 weigh 2.5 grams each. (Older pennies weigh 3.11 grams) Newer cents are made of zinc because the price of copper increased so much that a copper penny was worth more than one cent.So a roll (50 pennies) would weigh (2.5g times 50 = 125 grams) (125g divided by 28.35 ounces = 4.41oz) (4.41oz divided by 16oz =.28lb) Summary.odern zinc (1982-present) pennies weigh 2.5 grams each, and copper pennies (pre-1982) weigh 3.11 grams each. 50 new ones weigh 125 grams and 50 old ones weigh 155.5 grams. A â¦ mix of the two weighs somewhere in the middle.