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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 weight in grams of 3 moles of diatomic oxygen?
The molar mass of diatomic oxygen (O2) is approximately 32 grams/mol. Therefore, 3 moles of diatomic oxygen would weigh 3 moles * 32 grams/mole = 96 grams.
What is the molar weight of petroleum ether?
The molar weight of petroleum ether can vary depending on the specific composition of hydrocarbons present in the mixture. On average, the molar weight of petroleum ether is approximately 100 g/mol.
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)
Why is the molar specific heat of a diatomic gas usually larger than that of monoatomic gas?
The molar specific heat of a diatomic gas is typically larger than that of a monoatomic gas because diatomic gases have more degrees of freedom, allowing them to store and transfer more energy. In addition to translational motion, diatomic molecules can also store energy in rotational and vibrational modes, leading to higher specific heat values.
Why does a diatomic gas have greater energy content per mole than monoatomic gas at the same temperature?
Diatomic gases have more degrees of freedom for energy compared to monoatomic gases, which allows them to store more energy per mole at the same temperature. This is because diatomic gases can vibrate and rotate in addition to translating through space, providing more ways for them to store energy.
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 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
What is the mass of 1 Mole of diatomic nitrogen gas?
The molar mass of diatomic nitrogen (N2) is approximately 28.02 g/mol. Therefore, the mass of one mole of diatomic nitrogen gas is 28.02 grams.
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.
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 element is larger H2o or MgSO4?
MgSO4 (magnesium sulfate) is larger in terms of molar mass compared to H2O (water). The molar mass of MgSO4 is approximately 120.4 g/mol, while the molar mass of H2O is approximately 18.015 g/mol.
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 is the weight in grams of 3 moles of diatomic oxygen?
The molar mass of diatomic oxygen (O2) is approximately 32 grams/mol. Therefore, 3 moles of diatomic oxygen would weigh 3 moles * 32 grams/mole = 96 grams.
