FAB 25.4cm B 18cm FCD FBF FFL FLE 45° 45° 45° A 18cm FAF D F F FFE E FEO RA ? ? 500g 250g RD
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Calamine, malachite, magnetite and cryolite, respectively, are (a) $\mathrm{ZnCO}_{3}, \mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2}, \mathrm{Fe}_{3} \mathrm{O}_{4}, \mathrm{Na}_{3} \mathrm{~A} 1 \mathrm{~F}_{6}$ (b) $\mathrm{ZnSO}_{4}, \mathrm{Cu}(\mathrm{OH})_{2}, \mathrm{Fe}_{3} \mathrm{O}_{4}, \mathrm{Na}_{3} \mathrm{AlF}_{6}$ (c) $\mathrm{ZnSO}_{4}, \mathrm{CuCO}_{3}, \mathrm{Fe}_{2} \mathrm{O}_{3}, \mathrm{AlF}_{3}$ (d) $\mathrm{ZnCO}_{3}, \mathrm{CuCO}_{3}, \mathrm{Fe}_{2} \mathrm{O}_{3}, \mathrm{Na}_{3} \mathrm{AlF}_{6}$
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For a solution that is $0.164 \mathrm{M} \mathrm{NH}_{3}$ and $0.102 \mathrm{M} \mathrm{NH}_{4} \mathrm{Cl}$ calculate (a) $\left[\mathrm{OH}^{-}\right] ;$ (b) $\left[\mathrm{NH}_{4}^{+}\right] ;$ (c) $\left[\mathrm{Cl}^{-}\right] ;$ (d) $\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]$.
Calculate $\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]$ and $\left[\mathrm{OH}^{-}\right]$ for each solution:(a) $0.00165 \mathrm{M} \mathrm{HNO}_{3} ;$ (b) $0.0087 \mathrm{M} \mathrm{KOH} ;$ (c) $0.00213 \mathrm{M}$ $\operatorname{Sr}(\mathrm{OH})_{2} ;$ (d) $5.8 \times 10^{-4} \mathrm{M} \mathrm{HI}$.
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