Question

Calculate the number of molecules present in 0.45 moles of H2O2.

Answer 1

Answer: 2.7099 × 10²² molecules

Step-by-step explanation:

1 mole of H₂O₂ = 6.022 × 10²² molecules of H₂O₂

No . of molecules in 0.45 moles of H₂O₂ = 0.45 × 6.022 × 10²²

= 45/ 100 × 6.022 × 10²²

= 270.99 /100 × 10²²

= 2.7099 × 10²² molecules

∴ The no. of molecules present in 0.45 moles of H₂O₂ are 2.7099 × 10²² molecules .