How many copper atoms are in a pure copper statue with a mass of 176 kg?

1 Answer
Jul 24, 2016

Answer:

#(176xx10^3*g)/(63.55*g*mol^-1)xxN_A#, where #N_A="Avogadro's number"#.

Explanation:

#N_A = "Avogadro's number", 6.022xx10^23*mol^-1#

We know that #N_A# copper atoms have a mass of #63.55# #g#. How do we know this?