Question A jar with 33 g of copper is heated from 240 °C to 393 °C . How much heat energy was used? (The specific heat capacity for copper is 0.385 Jg°C .) (1 point) Responses
1944 J
13114 J
1.785 J
8042 J
The correct answer is:
8042 J
To calculate the heat energy used, you can use the formula:
Q = mcΔT
Where:
Q = heat energy
m = mass of copper = 33 g
c = specific heat capacity of copper = 0.385 J/g°C
ΔT = change in temperature = final temperature - initial temperature = 393°C - 240°C = 153°C
Plugging in the values:
Q = 33 g * 0.385 J/g°C * 153°C = 8042 J
Therefore, the amount of heat energy used is 8042 J.