How heavy is a penny?

Answer

A penny weighs 2.5 grams or 0.080 of a troy ounce if it was minted after the year 1982. If it was minted in years prior to 1982 it weighed 3.11 grams.
Q&A Related to "How heavy is a penny?"
A US Penny is 3.1 grams.
http://wiki.answers.com/Q/How_heavy_is_one_penny
You need to classify the pennies by which year they were made. 1943-82 pennies weighed 3.1
http://www.chacha.com/question/how-heavy-is-6000-p...
There are many household items that you can use to clean copper pennies. You might try a vinegar solution and soak them in it until the acid can eat away the corrosion.
http://www.ask.com/web-answers/Science/Chemistry/h...
The 95% copper cents weigh 3.11 grams and were struck up to the middle of 1982. from the latter part of 1982 to present the copper coated zinc cents weigh 2.5 grams. I have no idea
http://answers.yahoo.com/question/index?qid=201009...
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