How many litres of H2 In 1Kg of H2?

To find the volume of 1 kg of hydrogen gas (H₂) at standard temperature and pressure (STP), we can use the ideal gas law. At STP, 1 mole of an ideal gas occupies approximately 22.4 liters. Since 1 kg of H₂ is about 49.9 moles (molar mass of H₂ is approximately 2 g/mol), the volume would be around 1,120 liters (49.9 moles × 22.4 liters/mole).