Final answer:
To determine the change in temperature of the solid iron, you can use the formula Q = mcΔT. By substituting the given values into the formula, you can solve for ΔT. In this case, the change in temperature of the iron is approximately 2.4°C.
Step-by-step explanation:
To determine the change in temperature of the solid iron, we can use the formula Q = mcΔT, where Q represents the heat energy, m is the mass, and c is the specific heat of the substance. In this case, the heat energy is given as 125 cal, the mass is 56.0 g, and the specific heat of iron is 0.11 cal/g°C. By substituting these values into the formula, we can solve for ΔT, which represents the change in temperature of the iron.
Using Q = mcΔT, we have 125 cal = (56.0 g)(0.11 cal/g°C)ΔT. By rearranging the equation and solving for ΔT, we find that ΔT is approximately 2.4°C. Therefore, the change in temperature of the iron is 2.4°C when 125 cal of heat are added to 56.0 g of solid iron.