Question

calculate the number of moles in 60g of NaOH

Answer 1

moles=mass/molar mass
here mass=60g and now we have to find the molar mass of NaOH from periodic table
Na:23g/mol
O:16g/mol
H:1 g/mol
total =40 g/mol
moles= 60 g / 40g/mol
moles=3/2 mol=1.5 moles

Answer 2

Answer : The number of moles in 60 g of NaOH is 1.5 moles.

Solution : Given,

Mass of NaOH = 60 g

Molar mass of NaOH = 40 g/mole

Formula used :

$Moles=\frac{\text{ Given mass}}{\text{ Molar mass}}$

Now put all the given values in this formula, we get

$\text{ Moles of }NaOH=\frac{\text{ Given mass of }NaOH}{\text{ Molar mass of }NaOH}=\frac{60g}{40g/mole}=1.5moles$

Therefore, the number of moles in 60 g of NaOH is 1.5 moles.