What is a change in energy if 18 grams of water is heated from room temperature to 20 degrees above it?

What is a change in energy if 18 grams of water is heated from room temperature to 20 degrees above it? Correct Answer 1.506 KJ

We know that Q = msΔT, where Q is the energy,m is the mass of water, s is the specific heat of water and T is the temperature. So the change in energy required here = 18 g x 4.184 J/g-K x 20K = 1.506KJ.
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