530
530
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.
10 grams of copper can kill you. But copper sulphate won't kill you. So don't freak out!
Silver dimes were 90% silver with 10% copper and weigh 2.5 grams, which is 2.25 grams of silver.
8 grams
530
530
If density of Copper is 8.9 g/cm3, then 534 g, not 530 g, for a 30 cm X 20 cm X .10 cm
There shouldn't be any copper in eight grams of gold! Unless it's a copper/gold alloy.
431.5 grams
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.
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.
10 grams of copper can kill you. But copper sulphate won't kill you. So don't freak out!
1654 grams exactly
431.5 grams A+LS =^.^=
The answer is 47,128 x 1023 atoms.
2.83 moles