High School

The specific heat capacity of lead is 128 J/kg·K.

How much heat energy is required to raise the temperature of 10 kg of lead by 15 degrees Celsius?

Answer :

Final answer:

19200 Joules of heat energy is needed to raise the temperature of 10 kg of lead by 15 degrees Celsius.

Explanation:

The amount of heat energy required to change the temperature of a substance can be calculated using the formula Q = mcΔT, where:

  • Q is the amount of heat energy,
  • m is the mass of the substance,
  • c is the specific heat capacity of the substance, and
  • ΔT is the change in temperature.

Given that the mass (m) of lead is 10 kg, the specific heat capacity (c) is 128 J/kg K, and the change in temperature (ΔT) is 15 degrees Celsius, we can substitute these values into our formula to get:

Q = 10 kg * 128 J/kg K * 15 K

= 19200 J

Therefore, 19200 Joules of heat energy is required to raise the temperature of 10 kg of lead by 15 degrees Celsius.

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