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li asked in Science & MathematicsChemistry · 5 hours ago

Calculate the total amount of energy required to change 10.0 g of water from 35.0 degrees Celsius to 110. degrees Celsius.?

Specific heat values:

Water: 4.184 J/g \cdot⋅ degrees Celsius

Ice= 2.0g J/g \cdot⋅ degrees Celsius

Steam= 2.02 J/g \cdot⋅ degrees Celsius

Heat of fusion= 334.72 J/g

Heat of vaporization = 2259.36 J/g \cdot⋅

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  • 4 hours ago

    You will do 3 calculations and add their results together:

    a) heat to raise the temp of the water from 35.0 C to 100 C:

    q = m c (T2-T1)

    q = 10.0 g (4.184 J/gC) (100 - 35.0 C) = 2720 J

    b) heat to vaporize the water:

    q = m (heat of vaporization)

    q = 10.0 g (2259.36 J/g) = 22594 J

    c) heat to raise temp of steam to 110 C:

    q = m c (T2-T1)

    q = 10.0 g (2.02 J/gC) (110-100 C) = 202 J

    qtotal = 2.55X10^4 J = 25.5 kJ

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