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What is the molar solubility of a saturated solution of copper sulfide, CuS?
- 7.9 × 10⁻⁸
- 2.2 × 10⁻⁹
- 2.7 × 10⁻¹⁸
- 8.4 × 10⁻¹³
- 9.3 × 10⁻¹⁰