Urgent chem help!!!!!! Watch

anonymous._.123
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any idea on this- im sooo stuck on it, been up for hours:

a more accurate method for experimentally determing enthapy changes is to determine the final mass of the reaction solution. plan a modification to the experimental method to measure this. discuss how this would affect the determined enthalpy changes.
the experiement was to find the enthalpy change of reaction for the thermal decomposition of khco3.


any help would be much appreciated x
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