Question

A copper pipe contains 21,000 g of copper. How many moles of copper are in the pipe?

Answer 1

Step-by-step explanation:

1 mol of copper is 63.5 grams (Check with your periodic table)

x mol of copper is 21000 grams

You can do this with a proportion.

1/x = 63.5/21000 Cross multiply

63.5 * x = 21000*1 Divide by 63.5

x = 21000 / 63.5

x = 330.71 mols.