Calculate the number of moles present in $400$ grams of $C a C O_{3}$ .

2

moles

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3

moles

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1

moles

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4

moles

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Solution

The correct option is D $4$ moles
Given that:

$400 g C a C O_{3}$

moles $= \frac{w e i g h t o f C a C O_{3}}{m o l e c u l a r w e i g h t o f C a C O_{3}}$
$= \frac{400}{100} = 4 m o l e s$
Option D is correct.

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