Question

How much energy is required to melt 2 kg of copper? Use the table below and

this equation: Q = mLfusion
A. 125.6 kJ
B. 9460 kJ
C. 414 kJ
D. 4730 kJ

Answer 1

C. 414 kJ

Step-by-step explanation:

Given parameters:

Mass of copper = 2kg

Unknown:

Amount of energy required to melt the copper = ?

Solution:

To solve this problem, we use:

Q = m L

m is the mass

L is the latent heat of fusion of copper = 207kJ/kg

So;

Q = 2 x 207 = 414kJ