Answer Happy

Complete combustion of a 1.125 g sample of a hydrocarbon (only
carbon and hydrogen present), produced 3.447 g of
CO2 and 1.647 g of H2O. What is the
empirical formula of the compound?
Part C
What is the oxidation number of tin in
SnCl3-?
Part D
What is the coefficient on H+ ions when the
following redox equation is balanced?
Cr2O72-(aq)
+ H2S(g)
→ Cr3+(aq)
+ S(s)
Part E
Which of the following is the correct balanced half equation for
the oxidation reaction in the unbalanced equation below.
ClO4-(aq) +
Br-(aq) → Cl- +
Br2(g)
Part F
Which element is oxidized in the reaction below?

I- + MnO4 - +
H+ → I2 +
MnO2 + H2O
Part G
Consider the following equilibrium reaction:
2SO3(g) ⇌⇌ 2
SO2(g) + O2(g)
The equilibrium constant expression for the above reaction
is: