$2.$ During a process a closed system transfers $2000$ kJ of heat to the surrounding, which is at $27\backslash$deg C$.$ If the entropy change for the system during this process is $-7$ kJ$/$K$,$ determine;a$)$ the total entropy change of the world as a result of this process, in kJ$/$K$.$Ans. $45$KJ$/$Kb$)$ Explain whether the process is reversible, irreversible, or impossible. $($Give all your reasons in support of your answer$).$