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How many joules of energy are required to vaporize 250.0g of water at 100 degrees Celsius?

Sagot :

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Answer: Q=104525J

Explanation: where Q is the heat energy required to heat a mass, m , though a change in temperature of Δ T and c is the heat capacity of the material (found in books!). Typical units are Q in Joules or J , m in k g and Δ T is in either Kelvin, K , or degrees Celsius o C . The units of c depend on the other units used but J / k g o C is typical.

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