Which of the following represents lemonite ore?

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${Fe}_{3} O_{4}$

${Fe}_{2} O_{3} \cdot 3 H_{2} O$

${Fe}_{2} O_{3}$

${FeCO}_{3}$

answer is C.

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Detailed Solution

An iron ore called limonite is made up of a variety of hydrated iron(III) oxide-hydroxides. ${Fe}_{2} O_{3} \cdot 3 H_{2} O$ is a common way to write the general formula, however this is not totally accurate because the amount of oxide to hydroxide can vary greatly.

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