1. An elementary reaction A  B is conducted using a spherical pellet impregnated with platinum throughout the pellet. The reactant concentration halfway to the center of the pellet is 10% of the concentration at the surface. The effective diffusivity and the surface concentration values are De: 0.1 cm2/s, [A]s: 0.001 mol/L. The radius of the pellet is 10 m. What is the reactant concentration at a depth of 2.5 m from the surface? To what diameter should the pellet be reduced if the effectiveness factor is to be 0.8?

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

The bergeron process.