Its change due to phase transitions is the enthalpy divided by the temperature of the transition.
Heating causes it to change in the amount of the heat capacity times the log of T2 over T1, a value that is path independent. Its change due to mixing of ideal gases is minus R times the sum of the number of moles times the log of the mole fraction for each gas. Its change due to phase transitions is the enthalpy divided by the temperature of the transition. For 10 points, the third law of thermodynamics shows that the absolute value of what quantity is zero at zero degrees Kelvin, a quantity equal to Boltzmann's constant times the log of the number of microstates that measure disorder in the system?
Heating causes it to change in the amount of the heat capacity times the log of T2 over T1, a value that is path independent.
{entropy}