Gasses have two specific heat capacities because the boundary conditions can affect the number by up to 60%. Therefore, a number is given to each boundary condition: isobaric (constant pressure) or isochoric (constant volume). In an ideal gas, they differ by the quantity R (the gas constant - the same one you use in the ideal gas law):
Cp = Cv + R
where Cp is the isobaric molar heat capacity (specific heat) and Cv is the isochoric molar heat capacity.
Two specific heats are defined for gases, one for constant volume (CV) and one for constant pressure (CP).
One if for constant volume, the other is for constant pressure.
the ratio of amount of heat requried to raise the temprature of 1 mole of compound 1 to the amount of heat requried to raise temprature substance such as wate 1 at a specified temprature also known as specific heat .
equal to
change in eternal energy= n*Cv*delta T n= moles Cv= molar specific heat of gas at constant volume Delta
molar mass
22.4 liters.
Molar heat of fusion: the heat (enthalpy, energy) needed to transform a solid in liquid (expressed in kJ/mol). Molar heat of vaporization: the heat (enthalpy, energy) needed to transform a liquid in gas (expressed in kJ/mol).
A monatomic gas has no contribution from vibration to its specific heat. A diatomic gas has both vibration of the two atoms as the stretch and compress the bond between them and can rotate faster or slower. With more ways to store energy than just translational energy, diatomic gases tend to have higher heat capacities.
Typical heat capacities are (exact values depend on temperature): Solid (Ice): 2.108 kJ/kg·K Liquid (water): 4.187 kJ/kg·K Gas (water vapor/steam): 1.996 kJ/-kg·K In comparison - you can see that liquid water has a higher heat capacity that ice or steam.
Heat, number of molecules, atmospheric pressure and volume Volume * Pressure = molecules * molar gas constant * Heat
Probable 8,314462 1(75) cm3MPaK−1 mol−1.
the ratio of amount of heat requried to raise the temprature of 1 mole of compound 1 to the amount of heat requried to raise temprature substance such as wate 1 at a specified temprature also known as specific heat .
Yes as is the molar mass of anything else.
For gases, there is heat specific heat capacity under the assumption that the volume remains constant, and under the assumption that the pressure remains constant. The reason the values are different is that when heating up a gas, in the case of constant pressure it requires additional energy to expand the gas. For solids and liquids, "constant volume" isn't used, since it would require a huge pressure to maintain the constant volume.
That's not true. The molar volume of a gas is always greater than the molar volume of a liquid. I can't think of any exceptions to this.
Molar gas volume is the volume of ONE moel of gas. It only depends on the pressure and temperature, not on the kind of gas. Molar volume at standard temperature and standard pressure is always 22,4 Litres (for any gas)
Molar mass of NH3 = 17.03052g/mol
The molar heat of combustion of methane (890 kJ/mol) is higher than that of water gas (525 kJ/mol)