If the atomic mass of sodium is $23$ , then the number of moles in $46$ g of sodium is:

1

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2

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2.3

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4.6

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Solution

The correct option is C $2$
Molar mass of sodium $= 23$
The given mass of sodium $= 46$
Hence, total number of moles $= \frac{M a s s}{M o l a r m a s s} = \frac{46}{23} = 2$

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