Energy Stored In a Capacitor

What are the charges and voltage drops across each capacitor?

If the potential difference across the 20 $\mu$F capacitor is 12 V. What is the potential difference supplied by the battery? How much energy is stored in the 25 $\mu$F capacitor?

Find current and potential difference for each resistor.

Find the current flowing through the other two branches and the value of the resistor in the circuit below.