The more an object moves the more kinetic energy it has
Atomic mass calcium ( Ca ) = 40.078 a.m.u
40.078 g ------------- 6.02x10²³ atoms
165 g ----------------- ??
165 x ( 6.02x10²³ ) / 40.078
=> 2.47x10²⁴ atoms
Salt and Copper are pure substances. They aren't a part of a mixture on their own.
I hope this helped!