What will be the difference in heat at constant pressure and constant volume for the combustion of carbon monoxide at $27 \, ^oC$ in $cal$?

What is the internal energy change when $2$ moles of an ideal gas at $25^{\circ} C$ is compressed isothermally and reversibly from $1.0 \ bar$ to $10.0 \ bar$?

Fill in the blanks:
$(i)$ $A$ system that allows the exchange of energy but not matter with the surroundings is called a ........ .
$(ii)$ The total amount of energy consisting of the internal energy of a substance plus 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 ........ .

At equilibrium,all systems are closed systems. $A$ saturated solution of glucose in an open vessel is which type of system?

What is a system? Explain the types of systems.

The work done during the expansion of a gas from a volume of $4 \ dm^3$ to $6 \ dm^3$ against a constant external pressure of $3 \ atm$ is $(1 \ L \ atm = 101.32 \ J)$ $...... \ J$