Significant figures

It is important that we express the correct number of significant figures in our calculations. Take the example below. Work through this sample calculation and post your answer: In an experiment to determine the specific heat capacity of an oil, the hydrocarbon was: Heated with an appliance rated 143W ± 1W (P) The heater supplied energy for 634s ± 1s to the oil (t) The initial temperature was 25.5 oC ± 0.5 oC and the final temperature was 47.5 o C ± 0.5 oC ...