Question

pls help.... .. ...​

Answer 1

Answer:

By grahams diffusion law,

r of H / r of A= root of (M of A/ M of H)      [ where r - rate of diffusion

                                                                                H-hydrogen

                                                                                  A-unknown gas in the qs

                                                                                 M-molecular mass]

that is 4=root of( (M of A)/2)

therefore, M of A=32

given M of A=ab

therfore ab=32

or ab=4*8

therefore a+b=4+8=12

bt in the optns given in the qs , 12 is not given

bt step upto ab=32 given above is correct

hope u can find the answer

sorryy...

Answer 2

Explanation:

Here the answer should be 6

hope it helps uhh mate ...