How many grams of HCl are contained in 2 L of a 1.00 M solution of HCl?

The molarity is equal to the number of moles per L of solution. Multiplying the molarity and the volume will give us the number of moles of HCl.

n = (1 mol/L) x (2 L) = 2 moles

The molar mass of HCl is 36.45 g/mol. Multiplying this to the number of moles will give us the mass of HCl.

mass of HCl = (36.45) (2 mol) = 72.9 grams HCl