You have a cup of tea (250 mL) that is 375 K which is too hot to drink. It needs to be cooled to 350 K before you can drink it. How much thermal energy has to be transferred from the tea to the surroundings to cool the tea?

Question

Is it 63.7 thermal energy

Answer 1

thermal energy = q joules = mass H2O x specific heat H2O x delta T.
mass H2O is 250 grams. Specific heat H2O = 4.284 Joules. delta T is 25 C.
Plug and chug.