How Can You Calculate Changes in Thermal Energy?
Specific Heat Calculator
Last updated:
Feb 15, 2022
- How to calculate specific rut
- Heat capacity formula
- Typical values of specific oestrus
- FAQ
This specific heat calculator is a tool that determines the oestrus capacity of a heated or a cooled sample. Specific heat is the amount of thermal energy you need to supply to a sample weighing 1 kg to increment its temperature by 1 Yard. Read on to acquire how to apply the heat capacity formula correctly to obtain a valid result.
How to calculate specific heat
- Determine whether y'all want to warm upwardly the sample (give it some thermal energy) or cool it down (have some thermal energy away).
- Insert the amount of energy supplied as a positive value. If you lot desire to absurd down the sample, insert the subtracted energy as a negative value. For example, say that we want to reduce the sample'due south thermal energy by 63,000 J. Then
Q = -63,000 J. - Decide the temperature difference between the initial and final state of the sample and type it into the heat capacity calculator. If the sample is cooled downwards, the departure will be negative, and if warmed up - positive. Let's say we want to cool the sample down by 3 degrees. Then
ΔT = -3 M. You tin likewise go to advanced fashion to blazon the initial and final values of temperature manually. - Determine the mass of the sample. We volition presume
g = 5 kg. - Calculate specific heat as
c = Q / (mΔT). In our example, information technology volition be equal toc = -63,000 J / (five kg * -3 Thou) = 4,200 J/(kg·K). This is the typical rut chapters of water.
If you have bug with the units, feel free to use our temperature conversion or weight conversion calculators.
Heat chapters formula
The formula for specific heat looks like this:
c = Q / (mΔT) Q is the corporeality of supplied or subtracted estrus (in joules), m is the mass of the sample, and ΔT is the departure between the initial and final temperatures. Heat chapters is measured in J/(kg·G).
Typical values of specific estrus
You don't need to apply the heat capacity estimator for nearly common substances. The values of specific heat for some of the most pop ones are listed below.
- ice:
2,100 J/(kg·Thousand) - h2o:
4,200 J/(kg·K) - water vapor:
ii,000 J/(kg·Thousand) - basalt:
840 J/(kg·M) - granite:
790 J/(kg·K) - aluminum:
890 J/(kg·One thousand) - iron:
450 J/(kg·Thousand) - copper:
380 J/(kg·G) - lead:
130 J/(kg·Chiliad)
Having this information, you lot can also calculate how much energy you need to supply to a sample to increase or decrease its temperature. For example, you tin can bank check how much oestrus you lot demand to bring a pot of water to the eddy to cook some pasta.
Wondering what the result actually means? Try our potential energy calculator to check how high you would raise the sample with this corporeality of energy. Or bank check how fast could the sample move with this kinetic energy reckoner.
FAQ
How to calculate specific heat capacity?
- Find the initial and terminal temperature as well as the mass of the sample and energy supplied.
- Subtract the final and initial temperature to get the alter in temperature (ΔT).
- Multiply the modify in temperature with the mass of the sample.
- Divide the heat supplied/free energy with the product.
- The formula is
C = Q / (ΔT ⨉ m).
What is specific heat capacity at abiding volume?
The specific heat capacity is the heat or energy required to change 1 unit mass of a substance of a constant volume by 1 °C. The formula is Cv = Q / (ΔT ⨉ m).
What is the formula for specific rut?
The formula for specific heat capacity, C, of a substance with mass m, is C = Q /(m ⨉ ΔT). Where Q is the energy added and ΔT is the modify in temperature. The specific rut capacity during different processes, such as constant volume, Cv and constant pressure, Cp, are related to each other by the specific heat ratio, ɣ= Cp/Cv, or the gas abiding R = Cp - Cv.
What are the units for specific heat capacity?
Specific heat capacity is measured in J/kg M or J/kg C, as it is the oestrus or energy required during a constant volume process to alter the temperature of a substance of unit mass past i °C or 1 °Grand.
What is the specific heat capacity value of h2o?
The specific heat of h2o is 4179 J/kg Thousand, the amount of rut required to raise the temperature of i g of water by i Kelvin.
What are the imperial units for specific heat?
Specific heat is measured in BTU / lb °F in imperial units and in J/kg Thousand in SI units.
What is the specific heat capacity value of copper?
The specific estrus of copper is 385 J/kg K. Y'all can use this value to approximate the free energy required to estrus a 100 thou of copper by 5 °C, i.e., Q = m ten Cp x ΔT = 0.1 * 385 * 5 = 192.5 J.
What is the specific heat capacity value of aluminum?
The specific rut of aluminum is 897 J/kg K. This value is virtually 2.3 times of the specific heat of copper. You can utilise this value to estimate the energy required to heat a 500 g of aluminum by v °C, i.e., Q = thousand x Cp x ΔT = 0.5 * 897* 5 = 2242.5 J.
Modify of temperature (ΔT)
Specific heat capacity (c)
We made a video that explains thermodynamics concepts on the instance of cooling drinks! Watch it here:
Source: https://www.omnicalculator.com/physics/specific-heat
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