Step 4:Calculate the number of moles of H_(2) SO_(4) in one liter, ie the molarity.

To calculate the number of moles of $H_{2}SO_{4}$ in one liter, we need to know the molarity of the solution. Molarity is defined as the number of moles of solute per liter of solution.<br /><br />The formula for molarity is:<br /><br />Molarity = Moles of solute / Volume of solution in liters<br /><br />In this case, we are given that the volume of the solution is 1 liter. Therefore, the molarity of the solution is equal to the number of moles of $H_{2}SO_{4}$.<br /><br />So, the number of moles of $H_{2}SO_{4}$ in one liter is equal to the molarity of the solution.