1 so

2 at

3 go

4 took

5 hear

1 foggy

2 path

3 sound

4 anyone

5 spoke

6 C

1 H

2 A

3 E

4 G

5 B

1 on

2 far

3 most

4 during

5 driving

6 without

7 stand

8 if

1 care

2 spent

3 lots

4 will

5 on

a)pthh   SO3 + H2O --> H2SO4

              0,1                       0,1   mol

b)   nSO3=8/80=0,1mol

CM H2SO4 = 0,1/0,25=0,4 M

C_M = ( 2 * 0.5 + 3 * 1 ) / ( 2 + 3 ) = 0.8 (M)

nH2 = 2.24/22.4 = 0.1 (mol) 

Fe + 2HCl => FeCl2 + H2 

0.1...............................0.1 

mFe = 0.1 * 56 = 5.6 (g)