Find the number of molecules in 73 g of HCl.

संख्यात्मक

HCl molecular mass = 1 + 35.5 = 36.5 g

36.5 g of HCl = 6.03 × 10²³ molecules

∴ 73 g of molecules = `(6.03 xx 10^(23))/36.5 xx 73`

= 12.06 × 10²³

= 1.2 × 10²⁴

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