Adrop of liquid a of radius r1 is suspended in a stream of gas b. there is a spherical stagnant gas film of radius r2 surrounding the droplet. the concentration of a in the gas phase is xa1 at r=r1 and xa2 at the outer edge of the film, r=r2.a) integrate the shell balance to derive the expression for the mole fraction of a in the stagnant film. b) derive an expression for the flux of a at the gas-liquid interface (r=r1).

u can delete ur account.

1. go on google and write

2 open this and click on your profile pic and if your profile is not appearing, then u have to log in.

3. when u click on your profile pic, there appears four options on the top.

4. click on the 1st option and scroll down and go at the bottom.

5. click on edit profile.

6. there appears a option 'prefernces' and at that option at the right side , 'edit' is written.

7. click on the edit option.

8. there is a option " i want to delete my account" and click on that.

hope this u

and ur welcm

: )

b.

explanation:

1 the 4 is sig

area of focus