Which of the following compounds is most acidic in nature?

Identify the different types of bonds present in quaternary ammonium salts.

A syringe has a volume of $10.0\ \text{cm}^3$ at a pressure of $1$ atm. If the end is sealed and the plunger is pushed down (constant temperature), what will be the final volume when the pressure becomes $3.5$ atm?

The equilibrium constant for a reaction is $100$. What will be the value of standard Gibbs energy change at $298$ K ? ($R = 8.314$ J $\text{K}^{-1}\text{mol}^{-1}$)