Question

Mohan took out 3.5 g of copper from lab sample how many atom are carried out by him​

Answer 1

Answer:

3.5g atom carried by Mohan

Answer 2

63.5 g of copper contains

$6.022 { \times 10}^{23} atoms \: of \: copper$

3.5 g of copper contains

$6.022 { \times 10}^{23} \div 63.5 \times 3.5 = 0.33 { \times 10}^{23} atoms \: = 3.3 { \times 10}^{22} atoms \: of \: copper$