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There is 2,5% copper in the penny (the rest is mostly zinc)
so you need 40 pounds of pennies to have one pound of copper.
Each penny weighs 0,080 troy ounces
40 pounds is 583,33 troy ounces (see why I like the metric system?)
583,3 / 0,8 = 7291.66...
About 7293 pennies (almost seventy three dollars in pennies)
(some will be used and have corroded if that makes a difference... I do not know)
Minor CorrectionRight, it's easier and more accurate in metric units.US cents made after 1982 are metric and weigh 2.5 gm. 2.5% of that is copper, so each coin contains 0.025 X 2.5 gm = 0.0625 gm of copper.
There are approximately 453.6 gm in one pound so the equation is:
(1 penny / 0.0625 gm) X (453.6 gm / pound)
The grams cancel (remember dimensional analysis from algebra?) which leaves
(453.6 / 0.0625) X (pennies / pound)
or 7258.
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How many copper pennies equal a pound?
240 copper pennies equal a pound.
How many new pennies make a pound of copper?
One modern cent weighs 2.5 grams and contains 2.5% copper, which is 0.0625 grams or about 0.000138 lbs of copper per penny. To get one full pound of copper, it would take 7,246 pennies.
How many 1982 pennies does it take to make a pound?
100 pennies = 1 pound.
How many pennies equal a pound of pennies?
About 181 pennies per pound.
How many pounds does a million pennies make?
There are 100 pennies in a pound. Therefore, 1000000 pennies is equal to 1000000/100 = 10000 pounds.
How many copper pennies equal a pound?
240 copper pennies equal a pound.
How many American copper pennies in 1 pound?
10000 pennies equals one pound.
How many copper pennies does it take to make a pound?
In 1 pound of pre-1982 copper pennies, there are approx 448 grams of weight. Knowing that a copper pre-82 penny weighs 3.11 grams, simply divide the approx 448 grams in 1 pound by the individual penny weight of 3.11grams. The answer to"how many copper pennies does it take to make a pound" is this.It would take 144.05144 copper pennies to weight 1 pound........give or take a couple.One copper cent weighs 3.11 grams, and one pound is 453.59 grams. Do the math, and it comes out to 146 copper cents per pound.
How many new pennies make a pound of copper?
One modern cent weighs 2.5 grams and contains 2.5% copper, which is 0.0625 grams or about 0.000138 lbs of copper per penny. To get one full pound of copper, it would take 7,246 pennies.
How many 1982 pennies does it take to make a pound?
100 pennies = 1 pound.
How many pennies in a pound of copper?
145 pennies (pre 1982) 181 (1982 and beyond). 1982 and newer pennies contain mostly zinc and pre 1982 pennies are 95% copper. Some 1982 pennies are 95% copper but not all so if you're buying for copper content stick with pre 1982 to be on the safe side. The above mentioned is pennies in a pound. to figure out pennies "in a pound of copper you must multiply "for pre 1982" 145 X 95% "copper content. Since your 5% short of copper per penny you multiply 145 X 5% to get 7.25. Add 145 to 7.25 to get 152.25 pre 1982 pennies in a pound of copper.If you mean how many pennies can you make from one pound of copper the answer is:There is 2,5% copper in the penny (the rest is mostly zinc)so you need 40 pounds of pennies to have one pound of copper.Each penny weighs 0,080 troy ounces40 pounds is 583,33 troy ounces (see why I like the metric system?)583,3 / 0,8 = 7291.66...About 7293 pennies (almost seventy three dollars in pennies)(some will be used and have corroded if that makes a difference... I do not know)
How many pennies make one pound?
Now it is 100 pence to the pound. Pre decimal currency, there were 240 pennies in a pound.
How many pennies make 100 pound?
10,000
How many American pennies make a pound?
3million
How many pennies equal a pound of pennies?
About 181 pennies per pound.
How many pounds does a million pennies make?
There are 100 pennies in a pound. Therefore, 1000000 pennies is equal to 1000000/100 = 10000 pounds.
How many pennies make 2000 pounds?
1,000 pennies = 6.5128 pounds copper 1 ton = 2,000 lbs
