The same voltage is applied between the plates of two different capacitors. When used with capacitor $A,$ this voltage causes the capacitor to store $19C$ of charge and $7\mathrm{.}0{10}^{-5}J$ of energy. When used with capacitor $B,$ which has a capacitance of $6\mathrm{.}1F,$ this voltage causes the capacitor to store a charge that has a magnitude of $q_B.$ Determine $q_B.$

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