Home
Class 11
PHYSICS
Calculate the change in internal energy ...

Calculate the change in internal energy of `3 .0` mol of helium gas when its temperature is increased by `2. 0 K`.

Text Solution

Verified by Experts

Helium is a monoatomic gas.
Internal energy of n moles of the gas is ,
`U=3//2nRTthereforeDeltaU=3/2nR(DeltaT)`
Subsituting the values, `DeltaU=(3/2)(3)(8.31)(2.0)=74.8J`
Promotional Banner

Topper's Solved these Questions

  • THERMOMETRY THERMAL EXPANSION AND KINETIC THEORY OF GASES

    DC PANDEY|Exercise Check point 14.1|10 Videos

  • THERMOMETRY THERMAL EXPANSION AND KINETIC THEORY OF GASES

    DC PANDEY|Exercise Check point 14.2|20 Videos

  • SUPERPOSITION OF WAVES

    DC PANDEY|Exercise Level 2 Subjective|8 Videos

  • THERMOMETRY,THERMAL EXPANSION & KINETIC THEORY OF GASES

    DC PANDEY|Exercise Level 2 Subjective|9 Videos

Similar Questions

Explore conceptually related problems

The ratio of the molar heat capacities of an ideal gas is (C_p / C_v 7/6) . Calculate the change in internal energy of 1.0mole of the gas when its temperature is raised by 50 k (a) keeping the pressure constant , (b) keeping the volume constant and (c ) adiabatically.

Find the change in internal energy of 2 moles of an ideal gas when its temperature is increased by 75K (a) Keeping the pressure constant. (b) Keeping the volume constant and (c ) adiabatically. (gamma = (C_(P))/(C_(V)) =(7)/(5)) [R = (25)/(3)J//mol-K]

A bubble of 5.00 mol of helium is submerged at a certain depth in liquid water when the water ( and thus the helium ) undergoes a temperature increase Delta T of 20.0 ^@ C at constant pressure .As a result the bubble expands the helium is monoatomic and ideal (b) what is the change Delta E_(i nt ) in the internal energy of the helium during the temperature increase ?

What is the internal energy of 2.0 mol of an ideal monatomic gas at 273 K?

The internal energy of an ideal gas increases when it

calculate the change in internal energy of a gas kept in a rigid container when 100 J of heat is supplied to it.

(a) An ideal gas contained in a cylinder is given 200 J of heat. The gas does 60 J of work in the expansion resulting from heating. Calculate the increase in internal energy in the process. (b) Calculate the change in internal energy of a gas kept in a rigid container when 150 J of heat is supplied to it.

Latent heat of vaporisation of a liquid at 500K and 1 atm pressure is 10.0 kcal//mol . What will be the change in internal energy (DeltaE) of 3 mol of liquid at same temperature?

DC PANDEY-THERMOMETRY THERMAL EXPANSION AND KINETIC THEORY OF GASES-Medical entrance gallary
  1. Calculate the change in internal energy of 3 .0 mol of helium gas when...

    Text Solution

    |

  2. A fiven sample of an ideal gas occupise a volume V at a pressure p an...

    Text Solution

    |

  3. Coefficient of liner expansion of brass and steel rods are alpha(1) an...

    Text Solution

    |

  4. The molecules of a given mass of a gas have rms velocity of 200 m//s a...

    Text Solution

    |

  5. The rms speed of oxygen molecule in a gas at 27^(@)C would be given by

    Text Solution

    |

  6. The pressure of an ideal gas is directly proportional to

    Text Solution

    |

  7. Two metal rods of lengths L(1) and L(2) and coefficients of linear exp...

    Text Solution

    |

  8. The ratio of rms speed of an ideal gas molecules at pressure p to that...

    Text Solution

    |

  9. The rms speed of oxygen molecules in a gas is v. If the temperature is...

    Text Solution

    |

  10. The deviation of a real gas from the ideal one is minimum at

    Text Solution

    |

  11. The density of hydrogen gas at STP is 0.9 kg m^(-3) The mean kinetic e...

    Text Solution

    |

  12. A substance having coefficient of critical expension 4.9xx10^(-4)"^(@)...

    Text Solution

    |

  13. At constant pressure, the ratio of increases in volume of an ideal gas...

    Text Solution

    |

  14. When water is heated from 0^(@)C to 10^(@)C , its volume

    Text Solution

    |

  15. The length of s steel rod exceeds that of a brass rod by 5 cm. If the ...

    Text Solution

    |

  16. The density of water is maximum at:

    Text Solution

    |

  17. A metal rod if fixed rigidly at two ends so as to prevent its hermalex...

    Text Solution

    |

  18. Which one of the following is a wrong statement in kinetic theory of g...

    Text Solution

    |

  19. The mean free path of molecules of a gas (radius r) is inversely propo...

    Text Solution

    |

  20. The average pressure of an ideal gas is

    Text Solution

    |

  21. According to equipartition law of energy each particle in a system of ...

    Text Solution

    |