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9 Ιαν 2021 · What is the specific heat of iron? Solution: Initial and final temperatures are $T_i=50.4^\circ$ and $T_f=25^\circ$, respectively. Applying the specific heat equation and substituting the numerical values, we get \begin{align*} c&=\frac{Q}{m\Delta T}\\ \\&=\frac{47\, {\rm cal}}{1\,{\rm g}(50.4-25)}\\ \\ &=1.850\quad {\rm cal/g\cdot K}\end{align*}
The symbol c stands for the specific heat (also called “specific heat capacity”) and depends on the material and phase. The specific heat is numerically equal to the amount of heat necessary to change the temperature of \(1.00 \, kg\) of mass by \(1.00^oC\). The SI unit for specific heat is \(J/(kg \times K)\) or \(J/(kg \times ^oC)\).
Unlike the total heat capacity, the specific heat capacity is independent of mass or volume. It describes how much heat must be added to a unit of mass of a given substance to raise its temperature by one degree Celsius. The units of specific heat capacity are J/(kg °C) or equivalently J/(kg K).
19 Αυγ 2024 · c=Q/mΔT. Where: Q is the amount of heat added (in joules), m is the mass of the substance (in kilograms), ΔT is the change in temperature (in Celsius or Kelvin). This formula is derived from the relationship between thermal energy and temperature change, emphasizing how the specific heat capacity moderates this relationship.
11 Ιουν 2022 · The amount of heat energy needed is given by the equation: ΔE = mcΔθ. Where: ΔE = change in heat energy, in joules (J) m = mass, in kilograms (kg) c = specific heat capacity, in joules per kilogram per degree Kelvin (J/kg K or J/kg °C) Δθ = change in temperature, in Kelvin or Celsius (The symbol Δ in Maths is used to denote a change in ...
Joules/kilogram/degree C - The unit for the specific heat capacity of a material. Provide pupils with examples of exam questions to practise so that they become familiar with thinking about specific heat capacity in a range of different contexts.
The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. The relationship between heat and temperature change is usually expressed in the form shown below where c is the specific heat.
