What volume of chlorine (Cl2) is necessary to prepare 47.5 litres of hydrogen chloride
(HCI) if an excess of hydrogen (H2) is used?
All gases are measured at 100°C at 1 atmo-
sphere pressure.
Answer in units of L.

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.

um i think it might be a car?

level 4 to level 2 : ))

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l