The energy released (sometimes called enthalpy) is calculated using the following equation: \({E_h} = cm\Delta T\) \({E_h}\) is the heat energy released (in kJ or kJ mol-1) \(c\) is the specific ...

3.5 g of a fuel is burned to heat 50 cm 3 of water. The temperature of the water increased from 22°C to 71°C. Calculate the energy released per gram of fuel using the following equation.

There are roof shapes and ratios that maximize heat retainment and energy efficiency and, interestingly, ancient Italian architects and builders seemed to know it, too.