function of time with a digital voltmeter and a stopwatch. Typical temperature changes are two or three degrees Celsius, as indicated in the diagram below. You will have to decide on the mass of fuel to be used and the pressure of oxygen to provide for the combustion reaction. Remember that complete combustion will require at least enough oxygen to satisfy the stoichiometric reaction, but more may be required to actually achieve a complete reaction. Should any precautions be taken to determine the initial condition of the fuel? The weight of the fuel used can be measured with the top-loading balance provided.

After the combustion reaction and temperature measurements have been completed, measure any unburned fuel and unburned fuse-wire to correct your calculations for these unreacted materials.

You may wish to try the measurement at more than one oxygen pressure, and with different fuels for which you could estimate the carbon content or determine the combustion reactions involved.