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When 'm' kg of a substance of specific h...

When 'm' kg of a substance of specific heat capacity 'c' `J// °C` kg cools from temperature 'T' to 'To', how much heat energy will be lost by it?

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Heat energy lost by the substance `= " mc " (T - T_(o))" J "`
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In a laboratory experiment to measure the specific heat capacity of copper, 0.02 kg of water at 70^(@)C was poured into a copper calorimeter with a stirrer of mass 0.16 kg initially at 15^(@)C . After stirring the final temperature reached to 45^(@)C . Calculate the heat energy released by water in the experiment in cooling from 70^(@)C to 45^(@)C . (Specific heat capacity of water = 4200 J kg^(-1)""^(@)C^(-1) .

In a laboratory experiment to measure the specific heat capacity of copper, 0.02 kg of water at 70^(@)C was poured into a copper calorimeter with a stirrer of mass 0.16 kg initially at 15^(@)C . After stirring the final temperature reached to 45^(@)C . Assuming that heat released by water is entirely used to raise the temperature of calorimeter 15^(@)C to 45^(@)C , calculate the specific heat capacity of copper. (Specific heat capacity of water = 4200 J kg^(-1)""^(@)C^(-1) .

Specific heat capacity of water is ____ J kg^(-1) K^(-1) .

If Q cal of heat energy is supplied to 'm' kg of substacne its temeprature changes from t_(1)C ot t_(2)C Arrange the following steps in a sequential order to calculate speciific heat capacity of the substacne in SI system (a) Note down the mass of the substance as 'm' kg heat energy as Q cal and the temperrures as t_(1)C and t_(2)C (b) Write the formula for the amount of heat energy lost or gained by a body as Q=mstriangelt (c ) Convert the heat energy and temperature into si system (d) substitute the values in the formula and calculate the specific heat capacity of the substacne (e ) Find the change in temperature of the substacne

A calorimeter of mass 0.2 kg and specific heat 900 J//kg-K . Containing 0.5 kg of a liquid of specific heat 2400 J//kg-K . Its temperature falls from 60^(@)C to 55^(@)C in one minute. Find the rate of cooling.

TARGET PUBLICATION-HEAT-Answer the following
  1. Find the difference between heat capacity and specific heat capacity o...

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  2. Define specific heat capacity. Prove experimentally that different sub...

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  3. When 'm' kg of a substance of specific heat capacity 'c' J// °C kg coo...

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  4. When heat energy is lost by an object, DeltaT represents the fall in t...

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  5. State and explain principle of heat exchange.

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  6. Which principle is used to measure the specific heat capacity of a sub...

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  7. Explain measurement of specific heat of solid object by mixing method.

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  8. Explain the following temperature vs time graph.

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  9. What could be explained from the straight horizontal line observed at ...

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  10. How could latent heat be explained from temperature vis time graph of ...

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  11. What is meant by latent heat? How will the state of matter transform i...

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  12. Use your brain power! Is the concept of latent heat applicable duri...

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  13. Use your brain power! Where does the latent heat go during these tra...

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  14. What do your understand by the term 'latent heat' ? What are the two t...

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  15. Define specific latent heat of fusion.

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  16. What does the statement, 'latent heat of fusion for ice is 80 cal/g' m...

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  17. Define the term latent heat of vaporisation.

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  18. What is specific latent heat of vaporization ?

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  19. Explain the role of latent heat in the change of state of a substance.

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  20. What is regelation? Why is it observed?

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