Steam at 100°C Enters a Radiator and Leaves as Water

question 59

Multiple Choice

Steam at 100°C enters a radiator and leaves as water (at 80°C) .Take the heat of vaporization to be 540 cal/g.Of the total energy given off as heat, what percent arises from the cooling of the water?

• A)100%
• B)54%
• C)26%
• D)14%
• E)3.6%

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