Calculate the percentage error in your experimental determination of the molar heat of combustion of magnesium

How on earth do I do this. I have been trying for a really long time. Please help.

/\H= 1713.3 kJ

this is what I got for the molar heat of reaction. So how do I find the % error?Calculate the percentage error in your experimental determination of the molar heat of combustion of magnesium
Percent error=|actual-experimental/actual| x 100%



| | is the absolute value sign because it has to be positive.



Actual is the accepted/real/theoretical value



Experimental is the value you calculated in your experiment.



So if the actual was 1800 KJ then you do:



| 1800 KJ-1713.3 KJ/1800 KJ | x 100%=4.82%



Note*: That is not the actual answer because I don't know the actual value of delta H for that reaction. It's only an example of how you should do it.Calculate the percentage error in your experimental determination of the molar heat of combustion of magnesium
But the thing is, the molar heat of Mg isn't commonly found, so how do u get the actual?

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