The formula of azurite is : (a) \( \mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \) (b) \...

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The formula of azurite is :
(a) \( \mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \)
(b) \( 2 \mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \)
\( \mathrm{P} \)
(c) \( \mathrm{CuCO}_{3} \cdot 2 \mathrm{Cu}(\mathrm{OH})_{2} \)
(d) \( \mathrm{CuSO}_{4} \cdot \mathrm{Cu}(\mathrm{OH})_{2} \)
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