ajkeller150 posted a question
Which of the following buffer systems would be the best choice to create a buffer with pH = 9.05?
HF}/KF
HNO2/KNO2
NH3/NH4Cl
HClO/KClO
~for this I got NH3/NH4Cl because this would give off a buffer greater then (pH> 7.0).
but I am having trouble with the second part:

For the best system, calculate the ratio of the masses of the buffer components required to make the buffer.
Express your answer using two significant figures.

m(NH3)/ m(NH4Cl)=