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Standard XII

Chemistry

Mole Fraction

Calculate the...

Question

Calculate the number of moles present in $60 g$ of $N a O H$ .

1.2

moles

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1.5

moles

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2.5

moles

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0.15

moles

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Solution

The correct option is A $1.5$ moles
given that, $60 g N a O H$
Molar mass $= 23 + 16 + 1 = 40 g / m o l$
Moles $= \frac{g r a m w e i g h t}{M o l a r M a s s}$
$= \frac{60}{40} = 1.5 m o l e s$

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Calculate the number of moles present in 60g of NaOH.

The correct option is A 1.5 molesgiven that, 60gNaOHMolar mass =23+16+1=40g/molMoles =gramweightMolarMass=6040=1.5moles

Calculate the number of moles present in $60 g$ of $N a O H$ .

The correct option is A $1.5$ moles
given that, $60 g N a O H$
Molar mass $= 23 + 16 + 1 = 40 g / m o l$
Moles $= \frac{g r a m w e i g h t}{M o l a r M a s s}$
$= \frac{60}{40} = 1.5 m o l e s$