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Specific heat capacity Knowledge-Based Practice

Chemistry · Thermochemistry & Thermodynamics · Chemistry · Energy & Heat in Chemical Processes

5 Chemistry practice questions on Specific heat capacity. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    A sample of copper has an extensive heat capacity of 77.0 J/°C. If the specific heat capacity of copper is 0.385 J/(g·°C), what is the mass of this copper sample?

    • A) 29.6 g
    • B) 200 g
    • C) 50.0 g
    • D) 0.00500 g
  2. 2.

    Which of the following statements correctly describes specific heat capacity?

    • A) It is an extensive property whose value increases proportionally with the mass of the sample.
    • B) It represents the quantity of heat required to complete an isothermal phase transition for a pure substance.
    • C) It is dependent on the total volume of the system and independent of the chemical identity of the material.
    • D) It is an intensive property defined as the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.
  3. 3.

    How much heat must be absorbed by a 120.0 g sample of liquid water to raise its temperature from 15.0 °C to 45.0 °C? (The specific heat capacity of liquid water is 4.184 J/(g·°C).)

    • A) 5.02 × 10² J
    • B) 1.51 × 10⁴ J
    • C) 2.26 × 10⁴ J
    • D) 3.01 × 10⁴ J
  4. 4.

    Equal masses of two different substances, A and B, at the same initial temperature absorb equal quantities of heat without undergoing a phase change. If the specific heat capacity of substance A is four times greater than that of substance B, how does the temperature increase of substance A compare to that of substance B?

    • A) The temperature increase of substance A is one-fourth that of substance B.
    • B) The temperature increase of substance A is four times that of substance B.
    • C) The temperature increase of substance A is equal to that of substance B.
    • D) The temperature increase of substance A is sixteen times that of substance B.
  5. 5.

    A 50.0 g sample of a metal absorbs 1050 J of thermal energy, causing its temperature to increase from 20.0 °C to 70.0 °C. What is the specific heat capacity of the metal?

    • A) 0.420 J/(g·°C)
    • B) 1.05 J/(g·°C)
    • C) 2.38 J/(g·°C)
    • D) 0.210 J/(g·°C)

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