Molar volume of the ideal hydrogen gas at room temperatre?

I just did a lab and it wants to know Molar volume of the ideal gas at room temperature (Volume/moles), expressed as L/mol at X degrees C and a pressure of 1 atmosphere and how much hydrogen was produced. In lab 1 i mixed .25g zinc with 10mL 6M HCL and in lab 2 I mixed .25g ZN with 20mL 6M HCl. HOw do I dertmine the amount of hydrogen produced by both and the Molar Volome.