Question

if 10 gram of copper contain x molecule then how many atoms contain in 2x molecule​

Answer 1

Given:

x molecule = 10g of copper

so, 2x molecule = 2× 10

= 20 g of copper

no. of atoms,

20 = 6.022 × 10^23 ×n

n = 20 ÷ 6.022 × 10^23

n = 2 × 10 ÷ 6.022 × 10^23 atoms