Question

calculate the nomber of hydrogen molecule is 8g of H2

Answer 1

No. of moles = weight/relative mass

Molecules in 1 g of H₂ = 1/2 moles
= ½ x 6.02 x 10²³

 

= 3.01 x 10²³ moles.



Therefore, 8 g of H₂ will have = 8 x 3.01 x 10²³ moles = 24.08 x 10²³ moles.



Thus, 8 g of H₂ will have 24.08 x 10²³ moles of hydrogen molecules.

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Answer 2

answer in the picture......