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Before 1982 the US Mint

Before 1982 U.S pennies were made of solid copper. As the price of copper rose,the U.S mint switched to a composition that is
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2. asked by Boriqualissa
3. 615 views
Students were asked to place a mint in their mouths and determine how long it took for the mint to dissolve. Students were asked
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2. 28 views
15. On October 21, 1982, the Bureau ifthe Mint changed the composition of pennies. Instead of an alloy of 95% Cu and 5% Zn by
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2. asked by kelly
3. 827 views
James placed a breath mint and a lump of toothpaste in a cup of water and let it sit overnight. Which statement best explains
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2. asked by mariana
3. 890 views
Before 1982 the US Mint cast penny coins from a copper and zinc mixture. If a 1980 penny weighs 3.051g and contains 0.153g zinc,
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2. asked by Twynna
3. 2,175 views
Before 1982 the US Mint cast penny coins from a copper and zinc mixture. If a 1980 penny weighs 3.051g and contains 0.153g zinc,
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2. asked by Twynna
3. 526 views
How are a mix of pre-1982 and post-1982 pennies a misleading or incorrect analogy for actual element isotopes?
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2. asked by Julie
3. 661 views
The cumulative number of AIDS cases C in the United States from 1982 to 1994 can be modeled by C = 3200x2 + 1586, and the
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2. asked by Tamie
3. 1,070 views
a wheel if a vehical rotates uniformly at the rate if 120 rotations per mint suddenly it goes faster and reaches 150 rotations
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2. asked by busra
3. 486 views
A treasure box contained 3 bags of mint and 4 bags of chocolate. What is the probability of a student grabbing a bag of mint
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2. asked by kareen
3. 555 views