using le chateliers principle to predict the

Question

Using Le Chatelier's Principle to predict the effect of a change in conditions on a chemical equilibrium. 

Le Chatelier's Principle

Predict how the equilibrium of the following reactions will be affected by the changes listed.

_____SO₂₍g₎ + _____O₂₍g_{) ----->}  _____SO₃₍g₎   +  4.725 kcal

a)      Adding SO_3(g)

b)      Adding O_2(g)

c)      Removing SO_2(g)

d)      Decreasing the pressure

e)      Increasing the temperature