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Calculate the energy required to heat 566.0mg of graphite from 5.2Ā°C to 23.2Ā°C. Assume the specific heat capacity of graphite under these conditions is Ā·0.710JĀ·gāˆ’1Kāˆ’1 . Be sure your answer has the correct number of significant digits.

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dsdrajlin

Answer:

7.23 J

Explanation:

Step 1: Given data

  • Mass of graphite (m): 566.0 mg
  • Initial temperature: 5.2 Ā°C
  • Final temperature: 23.2 Ā°C
  • Specific heat capacity of graphite (c): 0.710JĀ·gā»Ā¹Kā»Ā¹

Step 2: Calculate the energy required (Q)

We will use the following expression.

Q = c Ɨ m Ɨ Ī”T

Q = 0.710JĀ·gā»Ā¹Kā»Ā¹ Ɨ 0.5660 g Ɨ (23.2Ā°C-5.2Ā°C)

Q = 7.23 J

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