Question

What is the mass of 6.45 x 10^25 atoms Cu? The molar mass of Cu is 63.55g/mol.

Chemistry is so difficult for me! If anyone can help I would be SO thankful!

Answer 1

The mass of 6.45 x 10^25 atoms of Cu is 4.10 x 10^3 grams.

Step-by-step explanation:

The mass of 6.45 x 10^25 atoms of Cu can be calculated using the molar mass of Cu. The molar mass of Cu is 63.55g/mol. To calculate the mass of a given number of atoms, we can use the formula:

Mass = (Number of atoms) x (Molar mass)

Plugging in the values:

Mass = (6.45 x 10^25 atoms) x (63.55g/mol)

After calculating, the mass of 6.45 x 10^25 atoms of Cu is 4.10 x 10^3 grams.