Calculate the number of atoms of copper represented by 127.08 g of copper. 1. 1.20 * 1024 atoms 2. 2.00 atoms 3. 1.30 * 1024 atoms 4. 2.16 atoms

Avagadros number states that 1 mol of any substance is made of 6.022 x 10²³ units.

1 mol of Cu is made of 6.022 x 10²³ atoms of Cu.

the molar mass of Cu is - 63.5 g/mol

63.5 g of Cu is made of 6.022 x 10²³ atoms of Cu

therefore 127.08 g of Cu contains - 6.022 x 10²³ atoms / 63.5 x 127.08

number of Cu atoms - 1.20 x 10²⁴ atoms of Cu

answer is 1) 1.20 x 10²⁴ atoms