[john4614]

Hello, Writing my lab report, one of my main weaknesses of my lab reports are the Abstract. What are some pointers you can give to me on writing an abstract for the Enthalpy of Formation of Magnesium Oxide. What should I include? not sure what I put in wrong but she always marks it all up. So any pointers would be grealy appriciated. thanks

[john4614]

I am also going to need help with the discussion and conclusion, i found this experiment hard, so I don't really know what to write... please dont be to harsh:
Discussion and Conclusions: In this experiment we applied Hess’s Law. To the following reactions. H2¬¬¬(g) + ½ O2 (g) H2O using the formula, ΔHfº(H2O)=-285.84kj/mole. For solution: Mg(s)+2H(aq)Mg(aq)H2(g) applying formula ΔHb=-516.6kj/mole. Solution: Mg¬¬2+(aq)+H2O(l)MgO(s) + 2H(aq) ΔHc=145.8kj/mole. By adding the equations Mg(s)+1/2 O2(g)MgO(s)= -656.64.The accepted value of ΔHf  for the formation of MgO is -601.75kj/mole. Our percent deviation of our value is 2% error which leads us to think that we were very close and precise.