Calculate the molar volume of 146 g of HCl gas and the number of molec

1.	Calculate the molar volume of 146 g of HCl gas and the number of molecules present in it.
Answer» Molar mass of HCl = 36.5 g The molar volume of 36.5 g (1 mole) of HCl = 2.24 x 10²m³ . ∴ The volume of 146 g (4 moles) of HCl = \(\frac{2.24\times10^{-2}}{36.5}\) x 146 = 8.96 x 10 m³ No. of molecules in 146 g of HCl = 4 N = 4 x (Avogadro Number) = 4 x 6.023 x 10²³ = 24.092 x 10²³ = 2.4092 x 10²⁴ molecules.

Calculate the molar volume of 146 g of HCl gas and the number of molecules present in it.

Answer»

Molar mass of HCl = 36.5 g

The molar volume of 36.5 g (1 mole) of HCl = 2.24 x 10²m³ .

∴ The volume of 146 g (4 moles) of HCl = \(\frac{2.24\times10^{-2}}{36.5}\) x 146

= 8.96 x 10 m³

No. of molecules in 146 g of HCl = 4 N

= 4 x (Avogadro Number)

= 4 x 6.023 x 10²³

= 24.092 x 10²³

= 2.4092 x 10²⁴ molecules.