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Question

Calculate the amount of heat energy required to raise the temperature of $100 g$ of copper from $20^{o} C$ to $70^{o} C$ . Specific heat capacity of copper $= 390 J k g^{- 1} K^{- 1}$

1950 J

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3900 J

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390 J

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None of the above

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Solution

The correct option is A $1950 J$
Heat required is $m c Δ T = 100 \times 0.39 \times 50 = 1950 J$

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Similar questions

100 g

20^{\circ} C

70^{\circ} C

390 J k g^{- 1} K^{- 1}

J K g^{- 1} K^{- 1}

25^{0} C

35^{0} C

The meaning of the following statement is:

The specific heat capacity of copper is 0.4 J g^-1 ^oC^-1.

2 g

0.12 J g^{- 1}^{o} C^{- 1}

10^{o} C

30^{o} C

(a) Calculate the heat capacity of a copper vessel of mass 150 g if the specific heat capacity of copper is 410 J $k g^{- 1} K^{- 1}$ .

(b) How much heat energy will be required to increase the temperature of the vessel in part(a) from 25 $^{\circ} C t o 35^{\circ} C$ ?

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