Chemistry

As I could not find the rest, here is question one and two workings

1)Mass/Mr = 9.7/(65+32)

            =0.1mol

 

0.1 x 2 = 0.2mol

0.2mol x 24dm^3 = 4.8dm^3

 

ANS: D

2)Looking at reaction, we would need the mole ratio of 2 to 1

 

1.0/100=0.01mol

0.01mol x 2 = 0.002mol

0.02mol/1.0mol/dm^3 = 0.02dm^3

                                    = 20cm^3

 

ANS : B

-Alson