Question

Calculate the number of molecules in 9.00 moles H2S .Express your answer numerically in molecules.

Answer 1

5.418 x 10²⁴ molecules

Step-by-step explanation

From Avogadro's constant, 1 mole of any substance contains 6.02 x 10²³ molecules.

This implies;

1 mole H₂S = 6.02 x 10²³ molecules.

∴ 9.00 moles H₂S = x molecules

x molecules x 1 mole H₂S = 9.00 moles H₂S x 6.02 x 10²³ molecules.

`\begin{gathered} x\text{ molecule }=\frac{9.00\text{ moles }H_2S*6.02*10^(2)^(3)\text{ }molecules}{1mole\text{ }H_2S} \\ \\ x\text{ molecules }=5.418*10^(24)\text{ molecules} \end{gathered}`

Hence, he number of molecules in 9.00 moles H₂S = 5.418 x 10²⁴ molecules