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Molecular Physics | Thermodynamics
Calculate the temperature at which the root mean square speed of hydrogen and
oxygen molecules will be equal to their escape velocities from the earth’s
gravitational field. The radius of the earth is 6400 km.
oxygen molecules will be equal to their escape velocities from the earth’s
gravitational field. The radius of the earth is 6400 km.
Molecular Physics | Thermodynamics
Calculate the temperature at which the root mean square speed of hydrogen and oxygen molecules will be equal to their escape velocities from the earth’s gravitational field. The radius of the earth is 6400 km. Take .JK 1038.1,ms 8.9,mol1061232126----´==´=BAkgN
Molecular Physics | Thermodynamics
how much heat energy can be absorbed by 375 grams of lead to raise its temperature by 25 Celsius
Molecular Physics | Thermodynamics
One mole of an ideal gas is heated at a constant pressure of 101300N m from 273.2 K. Calculate the work involved R=8.314 j/mol/K
Molecular Physics | Thermodynamics
State the relevant laws which are applicable on the following observation of gas.(1) A balloon shrinks when kept in a cold place.(2) Pressure of moist gas is higher than that of dry gas.
Molecular Physics | Thermodynamics
Calculate the most probable speed, average speed and the root mean square speed for
gas molecules at 300 K. The mass of gas molecule is 5 × 10−26 kg and
kB = 1.38 × 10−23 JK
gas molecules at 300 K. The mass of gas molecule is 5 × 10−26 kg and
kB = 1.38 × 10−23 JK
Molecular Physics | Thermodynamics
Question 01:
2.0g of Nitrogen gas is at 270C in a fixed volume. If 20% of its total internal energy is due to rotation what is the average velocity of nitrogen molecules?
What will be the temperature 2.0 g of Helium gas in a fixed volume if the average velocity of its molecules is 20 m/s ?
Plot schematic of Cv v/s T curve based for nitrogen and helium gas based on Kinetic theory.
Question 02:
200g of melting ice is introduced to a huge lake at 270C. Find the total entropy change of ice-lake system.
200g of melting ice is introduced to a huge lake at 0.20C. Find the total entropy change of ice-lake system.
Can you draw any conclusion based on result? (Hint: tends to reversible, irreversible etc)
2.0g of Nitrogen gas is at 270C in a fixed volume. If 20% of its total internal energy is due to rotation what is the average velocity of nitrogen molecules?
What will be the temperature 2.0 g of Helium gas in a fixed volume if the average velocity of its molecules is 20 m/s ?
Plot schematic of Cv v/s T curve based for nitrogen and helium gas based on Kinetic theory.
Question 02:
200g of melting ice is introduced to a huge lake at 270C. Find the total entropy change of ice-lake system.
200g of melting ice is introduced to a huge lake at 0.20C. Find the total entropy change of ice-lake system.
Can you draw any conclusion based on result? (Hint: tends to reversible, irreversible etc)
Molecular Physics | Thermodynamics
A gamma ray with an energy of 3.40 × 10-14 joules strikes a photographic plate. We know that Planck's constant is 6.63 × 10-34 joule·seconds. What is the frequency of the photon?
Molecular Physics | Thermodynamics
A thermodynamic system consists of an ideal gas in a cylinder. The gas is compressed from 5.68 L to 2.96 L at a constant pressure of 7.5 × 104 Pa. What work is involved in this process?
Molecular Physics | Thermodynamics
A steel pipe of 50 mm bore and wall thickness 10 mm is lagged by insulation 30 mm thick. The pipe carries water at a temperature of 65 deg C. and the atmospheric temperature is 20 deg C. Calculate each of the following:
i) The heat transfer rate per unit length of pipe;
ii) The inside surface temperature of the steel;
iii) The temperature at the interface between steel and insulation;
iv) The outside surface temperature of the lagging.
Note: thermal conductivity of steel = 52 W/mK
Thermal conductivity of insulation = 0.17 W/mK
Inside surface heat transfer coefficient = 1136 W/m2K
Outside surface heat transfer coefficient = 9.7 W/m2K
i) The heat transfer rate per unit length of pipe;
ii) The inside surface temperature of the steel;
iii) The temperature at the interface between steel and insulation;
iv) The outside surface temperature of the lagging.
Note: thermal conductivity of steel = 52 W/mK
Thermal conductivity of insulation = 0.17 W/mK
Inside surface heat transfer coefficient = 1136 W/m2K
Outside surface heat transfer coefficient = 9.7 W/m2K
