A copper refinery produces a copper ingot weighing 150 lbs. If the copper is drawn into wire whose diameter is 8.25 mm, how many feet of copper can be obtained from the ingot? The density of copper is 8.94 g/ cm^3
2007-03-12 13:12:38 · 2 answers · asked by Alan l 1 in Science & Mathematics ➔ Chemistry
First, convert 150 lb into grams (you should be able to find a conversion factor pretty easily). Now, use the density to calculate the volume of that mass of copper.
Finally comes the more fun part. You are basically forming a cylinder (just a very long, very small cylinder). The formula for the volume of any cylinder is pi*r^2*h where in this case, h is the length of the wire.
Set this equal to the volume you calculated from the density, use 0.4125 cm for the radius, and solve for h.
Good luck.
2007-03-12 13:22:26 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋
hmm... I don't remember doing so many math problem like this...
2007-03-12 20:15:16 · answer #2 · answered by ilshdw 3 · 0⤊ 0⤋