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31 January, 17:16

How much heat is released by the burning of a nut that causes a cup containing 50g of water to experience an increase in temperature from 25 degrees celsius to 35 degrees celsius

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Answers (2)
  1. 31 January, 20:10
    0
    There is 2092 J of heat released

    Explanation:

    Step 1: Data given

    Mass of the water = 50.0 grams

    Initial temperature = 25.0 °C

    Final temperature = 35.0 °C

    Specific heat of water = 4.184 J/g°C

    Step 2: Calculate the heat released

    Q = m*c*ΔT

    ⇒ m = the mass of water = 50.0 grams

    ⇒ c = the specific heat of water = 4.184 J/g°C

    ⇒ ΔT = The change of temperature = T2 - T1 = 35.0 - 25.0 = 10.0 °C

    Q = 50.0g * 4.184 J/g°C * 10.0°C

    Q = 2092 J

    There is 2092 J of heat released
  2. 31 January, 20:25
    0
    2093 J is released by the burning of the nut

    Explanation:

    Calorimetry formula: Q = m. C.ΔT

    Q = 50g. C.ΔT

    C is the specific heat of water: 4.186 J/g°C

    ΔT = Final temperature - Initial temperature

    ΔT = 35° - 25° = 10°C

    Q = 50g. 4.186 J/g°C. 10°C → 2093 joules
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