What is the molarity of a solution prepared by dissolving 1.25g of HCl gas into enough water to make 30cm3 of solution

The molarity of a solution : 1.13 M

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

mass HCl = 1.25 g

mol HCl(MW=36.5 g/mol) :

Volume of solution = 30 cm³ = 0.03 L

The molarity :

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