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26 January, 02:48

How much thermal energy is needed to raise the temperature of 4g of water

from 25°C to 75°C if water has a specific heat of 4.186 J/gºC

1. 850,000J

2. 840,000J

3. 740,000)

4. 840)

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Answers (1)
  1. 26 January, 05:15
    0
    837.2J

    Explanation:

    m=4g, c=4.186 J/g/C, change in temperature=75-25=50 degree Celsius Q=?

    using the formula

    Q=mxcx change in theta

    Q=4x4.186x50

    Q=837.2J
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