Specific heat capacity Consider the experiment described below. A 1.0 kg mass an

Question

Specific heat capacity Consider the experiment described below. A 1.0 kg mass and a 3.0 kg mass with different initial temperatures are placed together inside a well-insulated container and allowed to come to thermal equilibrium. The insulated container prevents any transfer of energy to or from the environment (including the container itself). 1.0 kg 100 °C 3.0 kg 160 °C Mass Initial temperature Specific heat capacity Final temperature 0 kJ/(kg °C) 120 °C +20 °C 3.33 kJ/(kg "C) 120 °C 40 °C Do you agree or disagree with the following statements? Explain why you agree . (a) Heat flows from the 1.0 kg mass to the 3.0 kg mass because the 1.0 kg .(b) The thermal energy lost by the 3.0 kg mass is greater than the thermal or disagree. mass has a much larger heat capacity. energy gained by the 1.0 kg mass.

Explanation / Answer

well insulated container , so no heat lost.

a. disagree

- heat always flows from high temperature towards lower temperature. that's why final temperature of mass 1 kg is more than initial temperature.

b. disagree

- as container is well insulated, heat lost = heat gain

heat lost by 3 kg mass= m*cv*delta T = 3*73.33*40 = 8800 J

heat gained by 1 kg mass = 1*440*20 = 8800 J

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.