The purification of hydrogen gas is accomplished by diffusion through a palladium sheet. compute the number of kilograms of hydrogen that pass per hour through a 6-mm thick sheet of palladium having an area of 0.25 m2 at 600°c. assume a diffusion coefficient of 1.7 × 10–8 m2/s that the respective concentrations at the high- and low-pressure sides of the plate are 2.0 and 0.4 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained. express your answer in engineering format in kg/hour to two significant figure

= 4.08 × 10^-3 kg/h

This problem calls for the mass of hydrogen, per hour, that diffuses through a Pd sheet.

M = JAt = -DAt (ΔC/Δx)

   Where D = 1.7 × 10^–8 m2/s, A is area; 0.25 m², t =3600s/h

ΔC =( 0.4 - 2.0) kg/m³, Δx = 6 mm or 6 × 10^-3 m

Therefore;

    = -(1.7 × 10^–8 m2/s)(0.25 m²)(3600 s/h) [(0.4 - 2.0) kg/m³)/6 × 10^-3]

    = 4.08 × 10^-3 kg/h

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

hope this .