If the enthalpy of $B$ is greater than that of $A$,the reaction $A \to B$ is

Fill in the blanks given below:
$(i)$ $A$ system in which the exchange of energy between the system and the surroundings is possible but the exchange of matter is not possible is called a .......
$(ii)$ The total amount of energy, which is the sum of the internal energy of the substance and the product of its pressure and volume, is called .......
$(iii)$ The change in energy that occurs when a chemical reaction is carried out at constant pressure is called .......
$(iv)$ The process of attaining thermal equilibrium between any two heat-conducting substances is known as the ....... law of thermodynamics.

Consider the expansion given in problem $6.2$,for $1 \, mol$ of an ideal gas conducted reversibly.

It is a general principle that the less energy a system contains,it is:

Which among the following is $NOT$ an intensive property?

An ideal gas expands by $1.5 \ L$ against a constant external pressure of $2 \ atm$ at $298 \ K$. Calculate the work done (in $J$)?