Answer:
39.5J
Explanation:
Given parameters:
Mass of solid gold = 6g
Initial temperature = 274K
Final temperature = 325K
Specific heat capacity of gold = 0.129J/g°C
Unknown:
Amount of energy used = ?
Solution:
The amount of energy absorbed in changing in giving a temperature rise to a body is given as a product of its mass, specific heat capacity and change in temperature.
Mathematically;
H = m x C x Ф
where m is the mass of the body
c is the specific heat capacity
Ф is the change in temperature
Now the unknown is H;
We need to convert the given temperatures into °C from kelvin so we can work with it;
Initial temperature = 274K, in °C; 274 - 273 = 1°C
Final temperature = 325K, in °C; 325 - 273 = 52°C
Now input the parameters and solve;
H = 6 x 0.129 x (52 - 1) = 39.5J
