Volume of hydrogen liberated when "2" moles of Zinc reacts with aqueous "NaOH

Hydrogen gas is prepared in the laboratory by reacting dilute HCl with granulated zinc, Following reaction takes place Zn+2HClrarrZnCl_(2)+H_(2) Calculate the voluem of hydrogen gas liberated at STP when 32.65 g of zinc reacts with HCl. 1 mol of a gas occupies 22.7 L volume at STP, atomic mass of Zn=65 .3u

What volume of O_(2) is liberated when 3 moles of SO_(2) reacts with sufficient volume of O_(3)

The amount of heat liberated when one mole of NH_(4)OH reacts with one mole of HCl is