Copper Wire
June 10th, 2005
What is the length of a copper wire with a mass of 26g and a diameter of 0.14mm?
Can anyone help me out with this Chemistry Question. Possibly explain how this problem is solved.
Thanks
A copper wire (density = 8.96 g/cm3) has a diameter of 0.14 mm. If a sample of this copper wire has a mass of 26 g, how long is the wire?
The question is calculating the volume of copper wire that you have, where
volume = mass/density= 26/8.96= 2.902 cm3
Volume of wire(assuming it is cylindrical) is Pi*diameter (in cm)^2*length of wire/4
therefore Length of wire= 4*area/(Pi*diameter^2) = 4*2.902/(Pi*(0.14/10)^2)= 18850.35cm or 188.50m
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