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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 SI unit for specific heat is \(J/(kg \times K)\) or \(J/(kg \times ^oC)\). (Recall that the temperature change \(\Delta T\) is the same in units of kelvin and degrees Celsius.) Values of specific heat must generally be measured, because there is no simple way to calculate them precisely.
16 Μαΐ 2022 · The equation for specific heat capacity can be used to calculate specific heat capacity; E = mcΔθ. Where: E = change in thermal energy (J) m = mass of the substance (kg) c = specific heat capacity of the substance (J kg −1 K − 1 or J kg − 1 °C − 1) Δθ = change in temperature (K or °C) Evaluation
30 Ιουλ 2024 · The specific heat capacity is the heat or energy required to change one unit mass of a substance of a constant volume by 1 °C. The formula is Cv = Q / (ΔT × m).
11 Αυγ 2024 · The unit of specific heat is Joules per gram per degree Celsius or J/g∙ ∘ C. Another unit of specific heat is calories per gram per degree Celsius or J/cal∙ ∘ C. The temperature change (∆T) in the Celsius (C) scale is the same as that in the Kelvin (K) scale, although the temperature values differ.
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).
The specific heat capacity of a substance is defined as: The amount of thermal energy required to raise the temperature of 1 kg of a substance by 1 °C (or 1 K) without a change of state. This quantity determines the amount of energy needed to change the temperature of a substance.
