The number of moles of H2 present in 0.112 L of H2 gas at STP is:
Calculate the number of moles of H2 in a sample containing 3.011×103 H2 molecules.
The Henry's law constant for the solubility of N2 gas in water at 298K is 1.0 x 105 atm. The mole fraction of N2 is 0.8. The number of moles of N2 from air dissolved in 10 moles of water at 298K and 5 atm pressure is