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22 January, 13:43

27. How much energy is required to change 150.0 g of water from 10.0°C to 45.0°C? (Cwater =

4.18 J/g °C)

A. 125.43

B. 627.03

C. 219003

D. 28200 3

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Answers (1)
  1. 22 January, 14:23
    0
    The answer to your question is letter C. 21900.3. My result was 21945 J, letter C is close to this result.

    Explanation:

    Data

    mass = 150 g

    temperature 1 = T1 = 10°C

    temperature 2 = T2 = 45°C

    Cw = 4.18 J/g°C

    Formula

    Q = mCΔT = mC (T2 - T1)

    Substitution

    Q = (150) (4.18) (45 - 10)

    Simplification

    Q = (150) (4.18) (35)

    Result

    Q = 21945 J
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