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Abbie Toy

Feb 20, 2025

What occurs when the temperature of 10.0 grams of water is changed from 15.5°C to 14.5°C?

1. The water absorbs 42 joules. 2. The water releases 42 joules. 3. The water absorbs 4200 joules. 4. The water releases 4200 joules.
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4 Answers

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Lorine Rath

Feb 20, 2025

Q = m*Cp*(del T)Where m = masscp = specific heat capacity = 4.1855 J g–1 K–1 at 15 deg Cdel T = temp change = 14.5-15.5 = - 1 deg Cthere fore, Q = 10*4.1855*-1 = - 41.855 JHence 42 joules will be release by water when temp is decrease from 15.5 to 14.5 deg C.... Show More
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L
Lorine Rath

Feb 20, 2025

The specific heat capacity of water is approximately 4.2 kilojoules per kilogram per Kelvin. 1 degree Celsius is equivalent to 1 Kelvin.In your example you have 0.01 kilograms of water and a -1 degree temperature change. So multiply 4.2 kilojoules by 0.01 and -1 to get -42 joules. In other words 42 kilojoules is released (answer 2).... Show More
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