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Introduction

The no. of mo...

Question

The no. of moles of sodium hydroxide $[N a O H]$ contained in $160$ g of it is:
(Molecular Weight $N a = 23, O = 16, H = 1$ g/mole)

4

moles

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5.4

moles

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3

moles

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4.5

moles

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Solution

The correct option is A $4$ moles
As we know,
Number of moles $= \frac{w}{M}$
So, the number of moles of sodium hydroxide $= 160 / 40 = 4$

Suggest Corrections

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