answersLogoWhite

0

A while back, my chemistry class did an experiment that determined that about 96%- 97% of the copper coated zinc pennies is zinc. The percentage of copper varies depending on how long the coin has been in circulation, because the copper may eventually wear down.

All of them

User Avatar

Wiki User

16y ago

What else can I help you with?

Related Questions

How much does 1000000000 pennies weigh?

It depends if you are talking about pre-1982 pennies or post-1982 pennies.


What is the density of a pre 1983 penny?

The density of a pre-1983 penny is around 7.1 g/cm³. These pennies were made of 95% copper and 5% zinc, giving them a higher density compared to post-1983 pennies, which are mostly made of zinc.


How much are Lincoln pennies worth?

Post a new question and include denomination, condition, mintmark and year.


Who composed 'the last post'?

Who composed the last post


How much does 4000 US pennies weigh?

One modern (post-1982) US cent weighs 2.5 grams, so 4,000 pennies weigh 10,000 grams, or 10 kg.


How much copper is in 300 pennies?

Since the composition of pennies changed in 1982 from 95% copper to 2.5% copper, the amount of copper in 300 pennies would depend on the year they were minted. Pre-1982 pennies would contain about 2.3 pounds of copper, while post-1982 pennies would only contain about 0.375 pounds of copper.


Is there a difference between pre-1981 and post-1981 pennies?

The difference is tat the size changes a little, an also that Post 1981 pennies have had another meneral added to it


Post 1982 pennies were made of what type of metal?

Post 1982 pennies in the United States are made of 97.5% zinc and coated with a thin layer of copper. Prior to 1982, pennies were made of 95% copper.


How much is an 1800's wheat penny worth?

Please check again and post a new question. Wheat pennies were made from 1909 to 1958.


When was The Jakarta Post created?

The Jakarta Post was created in 1983.


What is the mass of post 1982 pennies?

Post-1982 pennies, which are primarily made of zinc with a thin copper coating, have a mass of 2.5 grams each. This change in composition was made to reduce costs, as copper prices had increased significantly. Before 1982, pennies were made mostly of copper and weighed 3.11 grams.


When were pennies first made?

Please post a new question with the country or countries you're interested in. Pennies (or cents) are used in about 5 dozen different countries.