Which of the following processes involves zero work done?

Predict the change in internal energy for an isolated system at constant volume.

One mole of an ideal gas at $300 \ K$ is expanded isothermally from an initial volume of $1 \ L$ to $10 \ L$. The change in internal energy for this process is ....... $cal$ $(R = 2 \ cal \ mol^{-1} \ K^{-1})$

In an endothermic reaction,the value of $\Delta H$ is

For the process dry ice $\rightarrow CO_{2(g)}$,which of the following is true regarding the thermodynamic parameters?

Define open,closed,and isolated systems with examples.