Arate of 105 mole/hr m3cat is observed for a gas concentration of a of 20 mole/m3. the catalyst particles are spheres with a diameter of 2.4 mm. assume first order kinetics and an effective diffusivity of 5x10-5 m2/hr. a) does pore diffusion resistance play a role? b) if yes, find the effectiveness factor and the true rate constant

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

the dissolution of polymer can be thermodynamically described in 2 steps.

the answer is 2-methylbutane. i just took a quiz and i got it wrong and this is what my teacher sai the correct answer was.