Sodium reacts violently with water according the chemical equation below. 2 Na + 2 H2O → 2 NaOH + H2
How many moles of Na are needed to produce exactly 5.6 liters of H2, measured at
STP ?

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.