Capacitors - General Questions

When the voltage across a capacitor is tripled, the stored charge

An uncharged capacitor and a 1 k resistor are connected in series with a switch and a 6 V battery. At the instant the switch is closed, the voltage across the capacitor is

Two 0.68 F capacitors are connected in series across a 10 kHz sine wave signal source. The total capacitive reactance is

When the plate area of a capacitor increases,

A 2 F, a 4 F, and a 10 F capacitor are connected in series. The total capacitance is less than

A 330 pF capacitor and a 220 pF capacitor are each connected across a 6 V dc source. The voltage across the 330 pF capacitor is

Two series capacitors (one 2 F, the other of unknown value) are charged from a 24 V source. The 2 F capacitor is charged to 16 V and the other to 8 V. The value of the unknown capacitor is

A 0.00022 F capacitor equals how many microfarads?