# 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?

/\H= 1713.3 kJ

this is what I got for the molar heat of reaction. So how do I find the % error?

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