Home
Class 11
PHYSICS
A calorimeter of water equivalent 10xx10...

A calorimeter of water equivalent `10xx10^(-3)kg` is filled with `70xx10^(-3)kg` of a substance at its melting point. The substance is found to solidify completely in 21 minutes. A similar calorimeter containing `80xx10^(-3)kg` of water at the same temperature cools at the rate of `1.5^(@)C` per minute, the room temperature being the same in both cases. What is the latent heat of fusioin of the substance? (Specific heat capacity of water `=4200 Jkg^(-1) K^(-1)`)

Text Solution

Verified by Experts

The correct Answer is:
`170xx10^(3)Jkg^(-1)`
Promotional Banner

Topper's Solved these Questions

  • CENTRIPITAL AND CENTRIFUGAL FORCES

    NN GHOSH|Exercise Exercises (B)|36 Videos

Similar Questions

Explore conceptually related problems

The amount of heat required to raise the temperature of 75 kg of ice at 0°C to water at 10°C is (latent heat of fusion of ice is 80 cal/g, specific heat of water is 1 cal/g °C)

50 gm of copper is heated to increase its temperature by 10^(@)C. If the same quantity of heat is given to 10 gm of water, the rise in its temperature is (Specific heat of copper =420 Joule-kg^(-1)@C^(-1)

The amount of heat required to raise the temperature of 1kg of a substance by 1^(@)C is called the latent heat of the substance.

When a calorimeter contains 40g of water at 50^(@)C , then the temperature falls to 45^(@)C in 10 minutes. The same calorimeter contains 100g of water at 50^(@)C , it takes 20 minutes for the temperature to become 45^(@)C . Find the water equivalent of the calorimeter.

What is meant by saying that the latent heat of vaporisation of water is 22.5 xx 10^(5) J//kg ?

A calorimeter containes 50g of water at 50^(@)C . The temperature falls to 45^(@)C in 10 minutes. When the calorimeter contains 100g of water at 50^(@)C it takes 18 minutes for the temperature to become 45^(@)C . Find the water equivalent of the calorimeter.

50 g of copper is heated to increase its temperature by 10^@C . If the same quantity of heat is given to 10g of water, the rise in its temperature is (specific heat of copper =420J//kg^(@)//C )

What is calorific value of petroleum if 0.25 g of petroleum is burnt in a calorimeter containing 3 kg of water and having a water equivalent of 400 gm. The rise in temperature is 10^@C

NN GHOSH-CALORIMETRY-All Questions
  1. A calorimeter of water equivalent 10xx10^(-3)kg is filled with 70xx10^...

    Text Solution

    |

  2. A platinum balls of mas 100g is remoived from a furnace and immersed i...

    Text Solution

    |

  3. Equal masses of three liquids are thoroughly mixed. The specific heat ...

    Text Solution

    |

  4. How should 1 kg of water at 50^(@)C be divided in two parts such that ...

    Text Solution

    |

  5. A body cools from 50^(@)C to 40^(@)C in 5 minutes. The surrounding tem...

    Text Solution

    |

  6. Find the result of mixing 0.5 kg ice at 0^@C with 2 kg water at 30^@C....

    Text Solution

    |

  7. What will be the result of mixing 2kg of cooper at 100^(@)C with 0.75 ...

    Text Solution

    |

  8. When 45g of a metal at 100^(@)C is dropped into an ice calorimeter, th...

    Text Solution

    |

  9. An alloy consists of n metals of mases m(1),m(2), m(3) ……. m(m) and sp...

    Text Solution

    |

  10. A copper vessel weighting 190g contains 300g of water at 0^(@)C and 50...

    Text Solution

    |

  11. Find the result of mixing 1kg of ice at 0^(@)C with 1.5kg of water at ...

    Text Solution

    |

  12. What would be the final temperature of the mixture when 1kg of ice at ...

    Text Solution

    |

  13. An alloy consists 40% copper and 60% nickel. A piece of the alloy of m...

    Text Solution

    |

  14. 4g of steam is added to a mixture of 35g of ice and 35g of water in a ...

    Text Solution

    |

  15. How should 2kg of water at 60^(@)C be divided so that when one part of...

    Text Solution

    |

  16. The specific heat capacities of n liquid are s(1),s(2),s(3),……..s(n) r...

    Text Solution

    |

  17. 1kg of ice at 0^(@)C contracts by 91x10^(-6)m^(3) on melting. A solid ...

    Text Solution

    |

  18. The volume of a mixture of ice and water is found to decrease by 0.125...

    Text Solution

    |

  19. A body cools from 50^(@)C to 40^(@)C is 5 minutes when its surrounding...

    Text Solution

    |

  20. A copper calorimeter, blackened outside, is filled with some hot liqui...

    Text Solution

    |

  21. The temperature of a body falls from 30^(@)C to 20^(@)C in 5 minutes. ...

    Text Solution

    |