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A student burns paraffin oil in a tea light to test the

A student burns paraffin oil in a tea light to test the efficiency of the calorimeter. Given qcal=15881.8 J and the following, calculate the efficiency of the calorimeter

mass of paraffin oil and tea light before burning = 21.998 g
mass of paraffin oil and tea light after burning = 21.277 g
actual energy density if paraffin oil = 4.67 *10^7 J/kg

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Chemistry: A student burns paraffin oil in a tea light to test the

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