Compare two burns. 15 g of steam at 100 °C condenses on the skin and cools to 37 °C…

Step 1. Steam. $0.015\ \text{kg} \times (2.26 \times 10^{6}\ \text{J/kg} + 4186\ \text{J kg}^{-1}\text{K}^{-1} \times 63\ \text{K}) = 37\,856\ \text{J}$.

Step 2. Water. $0.015\ \text{kg} \times 4186\ \text{J kg}^{-1}\text{K}^{-1} \times 63\ \text{K} = 3956\ \text{J}$.

Step 3. Ratio. $\dfrac{37\,856\ \text{J}}{3956\ \text{J}} = 9.57$.