Hi$,$ I need help. It counts as one question with different layers in our seatwork.

Two proteins A and B are separated by isocratic elution using a $50$ cm long column, with voidage of $0\mathrm{.}25$ and diameter of $10$ mm$.$ The mobile phase flow rate is $10$ ml$/$min$.$ The distribution coefficients for A and B are $1$ and $0\mathrm{.}1$ respectively. The B peak has a characteristic peak width of $0\mathrm{.}52$ minutes.

A$.$ Calculate the mobile phase retention time $($min$).$

B$.$ The retention time $($min$)$ of protein B is$?$

C$.$ The retention time $($min$)$ of protein A is$?$

D$.$ The number of theoretical plates is$?$

E$.$ The peak width $($min$)$ of protein A is$?$

F$.$ The resolution of the separation is$?$

G$.$ HETP $($cm$)$ is equal to$?$

H$.$ If the mobile phase flow rate is increased to $20$ ml$/$min and the HETP is increased by $80\%,$ determine the new number of theoretical plates.

I. The new mobile phase retention time $($min$)$ is$?$

J$.$ The new retention time $($min$)$ for protein B is$?$

K$.$ The new retention time $($min$)$ for protein A is $?$

L$.$ The new peak width $($min$)$ for protein B is$?$

M$.$ The new peak width $($min$)$ for protein A is$?$

N$.$ The new resolution is$?$

Thank you, please help.