Compute the equivalent capacitance of the network between

Question

In the figure, each capacitance C₁ is 8.1 x 10^-6F , and each capacitance C₂ is 5.4 x 10^-6F .

Part A: Compute the equivalent capacitance of the network between points a and b.

Part B: Compute the charge on the three capacitors nearest a and b when Vab = 223V.

Part C: Q2= ?

Part D: With 223V across a and b, compute Vcd