Final answer:
To calculate the energy contributed by the steel to the mixture, the specific heat formula q = mcΔT is used. However, without the mass of the steel and its temperature change, the calculation cannot be completed. If those values were known, the formula would readily provide the energy in joules.
Step-by-step explanation:
To determine the amount of energy contributed to the mixture by the steel, we would use the formula q = mcΔT, where 'q' is the heat energy in joules, 'm' is the mass of the substance in kilograms, 'c' is the specific heat capacity in J/(kg°C), and ΔT is the change in temperature in degrees Celsius. From the problem statement, we are given that the specific heat capacity of steel is 0.14 J/(kg°C). If we assume that 0°C represents zero relative energy, then the only remaining variables needed to calculate 'q' would be the mass of the steel 'm' and the change in temperature ΔT.
Unfortunately, the question does not provide the mass of the steel or its temperature change. Therefore, without those values, we cannot calculate the energy contribution of the steel. If hypothetically the mass and temperature change were known, let's say the mass is 1 kg and the temperature change is 45°C (from 20°C to 65°C, as in one of the examples provided), the calculation would be q = 1 kg * 0.14 J/(kg°C) * 45°C, resulting in energy q = 6.3 kJ.