Question

A copper ornament has a mass of 0.0693 Kg and changes from a temperature of 18 degrees celcius to 26 degrees Celsius. How much heat energy did it gain? Copper specific heat is 390 J/goC.

I've looked around for the answer key but the numbers have been changed. Please help honestly lol thank you!

Answer 1

Answer: 216.2 J

Explanation: The heat energy of copper is the expressed in Q=mc∆T. First make sure that the mass 0.0693 kg is converted into grams to cancel both units.

Q= 69.3 g x 390 J/g°C x 26 °C-18°C = 216.2J

Answer 2

Answer:

Explanation:

The formula for the heat energy is:

Q = m c ΔT

The difference in temperature is the same in kelvins and  celsius degrees

ΔT = Δt        Copper specific heat is 390 J/kg K

Q = 0.0693 · 390 · ( 26 - 18 ) = 216.216 J

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