Heat always flows from ______ temperature to __________ temperature

If heat is the reason then temperature is its__________

The entropy change accompanying the heating of one mole of helium gas, assuming ideal behaviour from a temperature of 300 K to a temperature of 1000 K at constant pressure.

The critical temperature of a gas is that temperature

Heat cannot transmit from a body at lower temperature to a body at higher temperature on its own' - which law is this statement derived from?

The specific heat c of a solid at low temperature shows temperature dependence according to the relation c= DT^(3) where D is a constant and T is the temperature in kelvin. A piece of this solid of mass m kg is taken and its temperature is raised from 20K to 30K. The amount of heat required in the process in energy units is

The specific heat of many solids at low temperature vary with absolute temperature T according to the relation s=aT^(3) , where a is a constant. Find the heat energy required to raise the temperature of a mass m of such a solid from T=0K" to "T=20K