Answer:
The substance is Ethanol
Step-by-step explanation:
To solve this problem we must use the expression of thermal energy calculation that relates the mass of a body with the specific heat of this and the temperature difference.
Q = m*Cp*(T_f - T_i)
where:
Q = amount of heat = 14.4 [kJ]
m = mass = 12 [kg]
Cp = specific heat [kJ/kg*K]
T_f = final temperature = 275.5 [K]
T_i = initial temperature = 275 [K]
Therefore we need to calculate Cp, and then compare this with the values in the given table attached.
Cp = 14.4/(12*(275.5 - 275))
Cp = 2.4 [kJ/kg*K]
Now we compare the Cp with the values given in the table.
So the substance is Ethanol