100g of water is heated from 30^(@)" to "50^(@)C. Ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is 4184 J/kg/K):

100g of water is heated from 30^(@)" to "50^(@)C. Ignoring the slight

1.	100g of water is heated from 30^(@)" to "50^(@)C. Ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is 4184 J/kg/K):
Answer» `8.4 kJ` `84 kJ` `2.1 kJ` `4.2 kJ` SOLUTION :`DELTA U =Delta Q =mc Delta T =100xx10^(-3)xx4184(50-30)~~8.4 kJ` CORRECT choice : (a).

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100g of water is heated from 30^(@)" to "50^(@)C. Ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is 4184 J/kg/K):

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