There are approximately 10 22 copper molecules in 1 gram of copper, determine the average

There are approximately 10 22 copper molecules in 1 gram of copper, determine the average mass of one copper molecule kg.

Given:

m = 1 gram = 10-3 kilograms is the mass of copper;

n = 1022 is the number of molecules in a piece of copper with mass m.

It is required to determine m1 (kilogram) – the average mass of one copper molecule.

To simplify the solution of the problem, it will be assumed that all copper molecules have the same mass on average. Then, to determine the mass of one molecule, you must use the following formula:

m = m1 * n, from here we find that:

m1 = m / n = 10-3 / 1022 = 10-3 – 22 = 10-25 kilograms.

Answer: the mass of one copper molecule is on average 10-25 kilograms.