Calculate Energy for a Temperature Rise - Practice 1

5 questions0m 0s

Learn the skill

Within a single phase and a range where specific heat is treated as constant, transferred heat is mass times specific heat times temperature change. A phase change needs another model. Treat all given values as ideal.

Worked example

For m = 2 kg, c = 3 kJ/(kg C) and a 4 C rise, Q = 2 x 3 x 4 = 24 kJ.

Question 1 Ideal single-phase sample 1: mass 2 kg, specific heat 3 kJ/(kg C), temperature rise 4 C. How much heat is transferred in kJ? Answer

Question 2 Ideal single-phase sample 2: mass 3 kg, specific heat 3 kJ/(kg C), temperature rise 5 C. How much heat is transferred in kJ? Answer

Question 3 Ideal single-phase sample 3: mass 4 kg, specific heat 3 kJ/(kg C), temperature rise 6 C. How much heat is transferred in kJ? Answer

Question 4 Ideal single-phase sample 4: mass 5 kg, specific heat 3 kJ/(kg C), temperature rise 4 C. How much heat is transferred in kJ? Answer

Question 5 Ideal single-phase sample 5: mass 6 kg, specific heat 3 kJ/(kg C), temperature rise 5 C. How much heat is transferred in kJ? Answer