This time is about equilibrium
take UO2(s)+4HF(g)<>UF4(g)+2HO(g)
what will the effect be
1)what if UO2 is added
2)what is HF react with the glass vessel the reaction os performed in
3)Water vapour is removed
4)The reaction mixture is heat ΔH=1043KJ/mol
5)Hydrogen fluoride gas is added
6)Catalyst is added
7)Neon gas is added to system
8)The volume of the system is increased.
How can i determine it shift to right or left?
Im so confuse now....

You can refer to the Le Chatelier's principle:
If a chemical system at equilibrium experiences a change in concentration, temperature, volume, or total pressure, then the equilibrium shifts to counter-act the imposed change