A student measures the enthalpy change of combustion, $$\(\Delta_{\mathrm{c}} \mathrm{H}\)$$, of methanol, $$\(\mathrm{CH}_{3} \mathrm{OH}\)$$, using the apparatus shown. After burning $$\(0.20 \mathrm{~g}\)$$ of methanol, the temperature of the water increases by $$\(16.0^{\circ} \mathrm{C}\)$$. The measurement uncertainty in the thermometer used in the experiment is $$\(0.5^{\circ} \mathrm{C}\)$$ for each reading. What is the percentage uncertainty in the temperature change of $$\(16.0^{\circ} \mathrm{C}\)$$ ? (1)

Answer:

Knowledge points:

Solution: