Question

0.005 kg of copper was heated from 20°C to 80°C. How much energy was used to eat
Cu? (Specific heat capacity of Cu is 385 J/kg °C)

Answer 1

Answer:

115.5 Joules

Explanation:

We are given;

• Mass of copper as 0.005 kg
• Initial temperature as 20° C
• Final temperature as 80° C
• specific heat of copper as  385 J/kg°C

We are required to calculate the quantity of heat energy used

• We know that, Q = m × c × ΔT

Change in temperature, ΔT = 80° C- 20° C

                                              = 60 °C

Therefore;

Quantity of heat, Q = 0.005 kg ×  385 J/kg/°C × 60° C

                                = 115.5 Joules

Thus, the heat energy used to heat copper is 115.5 Joules