What is the molarity of \( \mathrm{F}^{-} \)in a saturated solution of \( \operatorname{InF}_{3}...

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What is the molarity of \( \mathrm{F}^{-} \)in a saturated solution of \( \operatorname{InF}_{3} \) ? \( \left(K_{s p}=7.9 \times 10^{-10}\right) \)
(a) \( 2.3 \times 10^{-3} \)
(b) \( 8.3 \times 10^{-3} \)
(c) \( 1.0 \times 10^{-3} \)
(d) \( 7.0 \times 10^{-3} \)
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