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A copper rod that has a mass of 200.0 g has an initial temperature of 20.0°C and is heated to 40.0°C. If 1,540 J of heat are needed to heat the rod, what is the specific heat of copper?

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MissPhiladelphia

Heat gained in a system can be calculated by multiplying the given mass to the specific heat capacity of the substance and the temperature difference. It is expressed as follows:

Heat = mC(T2-T1)

1540 = 200.0 (C)(40 - 20)

C = 0.385 J / g C


Hope this answers the question. Have a nice day.

dsdrajlin

A copper rod with a mass of 200.0 g is heated from 20.0 °C to 40.0 °C, with the addition of 1,540 J of heat.  The specific heat of copper is 0.385 J/g.°C.

What is calorimetry?

Calorimetry is the science or act of measuring changes in state variables of a body for the purpose of deriving the heat transfer associated with changes of its state.

A copper rod with a mass of 200.0 g is heated from 20.0 °C to 40.0 °C, with the addition of 1,540 J of heat.  

We can calculate the specific heat of copper using the following expression.

Q = c × m × ΔT

c = Q / m × ΔT

c = 1,540 J / 200.0 g × (40.0 °C - 20.0 °C) = 0.385 J/g.°C

where,

  • Q is the heat absorbed.
  • c is the specific heat.
  • m is the mass.
  • ΔT is the change in the temperature.

Learn more about calorimetry here: https://brainly.com/question/16559442