How much heat is absorbed by a 27.5 g sample of water in going from liquid at 31.5 oC to steam at 120 oC and a pressure of 1.00 atm? Use the data in the attached table . Express your answer in kilojoules. Pay attention to units!

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yb1996 · Answer

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whpalmer4 · Answer

Use $$Q = m c \Delta T$$to find the heat absorbed in raising the temperature from 31.5 C to 100 C.  Then use the heat of vaporization to find the heat absorbed in turning the water to steam.  Then use the first formula again (but with a different value of c!) to find the heat absorbed in raising the temperature from 100 C to 120 C.  Add those absorbed heats together.  Don't forget to do any necessary unit conversions.