Question

50cm'3 of sulphur (iv) oxide were produced at s.t.p when some quantity of powdered sulphur were burnt in excess oxygen.state the equation for the reaction
Ans
S+O2g-2SO2

Answer 1

I would write it this way since you added the gaseous state to O2.
S(s) + O2(g) ==> SO2(g)

Also I don't know how your prof handles S; some show that S actually is S8 in the normal state. If that is the case then the equation would be
S8(s) + 8O2(g) --> 8SO2(g)

Answer 2

8so2<g>

Answer 3

Your Answer Is Very Correct.

Answer 4

Yes