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6 June, 22:51

How much energy, in joules, does 150.0 g of water with an initial temperature of 25 C need to absorb be raised to a final temperature of 75 C

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  1. 7 June, 01:17
    0
    31395 J

    Explanation:

    Given dа ta:

    mass of water = 150 g

    Initial temperature = 25 °C

    Final temperature = 75 °C

    Energy absorbed = ?

    Solution:

    Formula:

    q = m. c. ΔT

    we know that specific heat of water is 4.186 J/g.°C

    ΔT = final temperature - initial temperature

    ΔT = 75 °C - 25 °C

    ΔT = 50 °C

    now we will put the values in formula

    q = m. c. ΔT

    q = 150 g * 4.186 J/g.°C * 50 °C

    q = 31395 J

    so, 150 g of water need to absorb 31395 J of energy to raise the temperature from 25°C to 75 °C.
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