Question

Calculate the energy needed to raise the temperature of a 300.0 gram sample ofcopper by 50 °C. (Ccu = 0.386 J/g.°C)

Answer 1

The energy needed = 5790 J

Step-by-step explanation

Given:

Raise in temperature, ΔT = 50 °C

Mass of copper sample, m = 300.0 grams

Specific heat, c of Cu = 0.386 J/g.°C

What to find:

The quantity of energy, Q needed.

Step-by-step solution:

The energy, Q needed can be calculated using the formula;

`Q=mc\Delta T`

Plugging the values of the parameters into the formula;

`\begin{gathered} Q=300.0g*0.386J\text{/}g°C*50°C \\ \\ Q=5790\text{ }J \end{gathered}`

Therefore, the quantity of energy, Q needed is 5790 J