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Why is the molar specific heat of diatomic gas larger than that of a monoatomic gas?
Wiki User
∙ 8y ago
Diatomic gases have more degrees of freedom. They are also larger in size and mass. specific heat is proportional to the number of degrees of freedom; monatomic gases can only move linearly and have 3 degrees of freedom, molecules can also rotate and vibrate, so have more degrees of freedom.
Laurence Aufderhar
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What is the molar mass of oxygen gas?
Oxygen gas is composed of diatomic O2 molecules. From the Periodic Table, the atomic weight indicates that the molar mass of oxygen atoms is 16.0g/mole. The diatomic molecule O2 has twice the molar mass as oxygen atoms, and its molar mass is 32g/mole.
Why is the molar specific heat of the diatomic gas usually larger than that of mono-atomic gas?
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.
What is the specific heat of solid uranium?
The molar heat of uranium is 27.665 J/mol.K.
How do you measure molar heat capacity?
Specific heat is the heat capacity divided by the heat capacity of water, which makes it dimensionless. To obtain molar heat capacity from specific heat for a material of interest, simply multiply the specific heat by the heat capacity of water per gram [1 cal/(g*C)]and multiply by the molecular weight of the substance of interest. For example, to obtain the molar heat capacity of iron Specific heat of iron = 0.15 (note there are no units) Molar heat capacity of iron = 0.15*1 cal/(g*C)*55.85 g /gmole = 8.378 cal/(gmole*C)
What is the specific heat capacity for selenium?
The molar heat capacity of selenium is 25,363 J/mol.K.
Why is the molar specific heat of a diatomic gas usually larger than that of monoatomic gas?
Diatomic gases have more degrees of freedom. They are also larger in size and mass. specific heat is proportional to the number of degrees of freedom; monatomic gases can only move linearly and have 3 degrees of freedom, molecules can also rotate and vibrate, so have more degrees of freedom.
Why does a diatomic gas have greater energy content per mole than monoatomic gas at the same temperature?
The molar specific heat of a diatomic molecule is CV = (5/2) R, meaning U = (5/2) n R T, while, for a monatomic gas, CV = (3/2) R or U = (3/2) n R T. Since the molar specific heat is greater for a diatomic molecule, there is more internal energy stored inthe motion of the molecules for the same temperature than for that temperature in a monatomic gas.
What is the molar mass of oxygen gas?
Oxygen gas is composed of diatomic O2 molecules. From the Periodic Table, the atomic weight indicates that the molar mass of oxygen atoms is 16.0g/mole. The diatomic molecule O2 has twice the molar mass as oxygen atoms, and its molar mass is 32g/mole.
Why is the molar specific heat of the diatomic gas usually larger than that of mono-atomic gas?
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.
What element forms a diatomic gas with a mass of 160 amu?
Bromine (Br) has a molar mass of 79.904 amu (atomic mass units), which is extremely close to 80. Bromine is diatomic so when two bromine molecules are put together to create a diatomic gas, the molar masses of each bromine add to get a combined molar mass of 160 amu.
What is 42 grams of diatomic oxygen in moles?
moles = mass/molar mass The molar mass of an oxygen atom = 16 g mol-1, as there are two oxygen atoms in diatomic oxygen this has to be doubled. 42g / 32g mol-1 = 1.3125 moles
When finding the moles of a gram sample of a diatomic element do you divide by twice the molar mass?
YE you do divide by 2
Where on your body will you find a' molar'?
A molar is one of your larger rearmost teeth found inside your mouth.
What is difference between partial molar volume and specific volume?
No. Specific volume is the inverse of density. Molar volume specific volume divided by mols. (i.e. g/(mLxMols)
Why you prefer molar specific heat as compared to the simple specific heat?
In chemistry instead mass in kg it would be nice to deal the quantity in moles. Hence molar specific heat is best fit.
What are molar solutions?
Molar solutions are defined as 1 mole of a compound dissoved in a one liter solution. Molar solutions are used in pharmacology making solutions and dilutions of specific compounds.
How will molar conductivity vary with concentration or temperature?
molar conductivity involves concentration of electrolyte also....but electrolytic conductivity doesn't
