What is the difference in the amount of heat given out by 4kg of steam and 4kg of water when both are cooled from 100oC to 80oC? [the specific latent heat of steam is 2,260,000Jkg-1, specific heat capacity of water is 4200Jkg-1K-1]
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Correct Answer: Option C
Explanation:
Heat by water = mc\(\theta\)
Heat by steam = mc\(\theta\) + mL
Difference = mL = 4 x 2,260,000
= 9,040,000J
Heat by water = mc\(\theta\)
Heat by steam = mc\(\theta\) + mL
Difference = mL = 4 x 2,260,000
= 9,040,000J