Copper can be drawn into thin wires. How many meters of 34 gauge wire (diameter = 6.304x10-3 in) can be produced from the copper in 5.24 lb of covellite, an ore of copper that is 55% copper by mass?
(Hint: Treat the wire as a cylinder: V of cylinder = r2h; density of copper = 8.95 g/cm3.)
_____________________meters of wire?
(Hint: Treat the wire as a cylinder: V of cylinder = r2h; density of copper = 8.95 g/cm3.)
_____________________meters of wire?
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(5.24 lb) x (0.55) x (453.592 g/lb) / ( 8.95 g/cm^3) = 146.06 cm^3 Cu
6.304x10^-3 in = 0.016012 cm
volume of wire = pi x r^2 x h = (3.1416) x (0.016012 cm / 2)^2 x h = 0.000201364 cm^2 x h
(146.06 cm^3) / (0.000201364 cm^2) = 725353 cm = 7254 m
6.304x10^-3 in = 0.016012 cm
volume of wire = pi x r^2 x h = (3.1416) x (0.016012 cm / 2)^2 x h = 0.000201364 cm^2 x h
(146.06 cm^3) / (0.000201364 cm^2) = 725353 cm = 7254 m