A potato chip (crisp) was ignited

CHEMISTRY · Multi-part · A Level · Chemistry · Energetics · Energetics

Problem

A potato chip (crisp) was ignited, and the flame was used to heat a test tube containing water.
Mass of water/g7.8
Mass of chip/g1.2
Initial temperature/°C21.3
Final temperature/°C22.6
(1) Calculate the heat required, in kJ, to raise the temperature of the water, using data in the table above and from section 2 of the data booklet. [1] (2) Determine the enthalpy of combustion of the potato chip, in kJ g−1\text{kJ g}^{-1} . [1]

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