Answer:
0.167 kJ
Step-by-step explanation:
The rise in the temperature of a substance or a material caused by absorbing the heat energy is given in an equation Q = m x c x ∆T, where:
Q is an amount of heat absorbed ( in Joules)
m is the mass of the substance (in kilograms)
c is specific heat capacity ( amount of heat per unit mass required to raise the temperature by one degree Celsius)
∆T is the difference in the temperature
So, m=10g which is 0.01kg; ∆T is 8°C - 4°C= 4°C; and c for water is constant value and is equal to 4186 J/kg C.
Now it's easy to calculate the amount of energy: Q=0.01x4186x4 which equals to 167.44 J, which is approximately 0.167 kJ