Question

The relative molecular mass of sodium hydroxide is 40. If 60g of sodium hydroxide are dissolved in water, how many moles will there be in the solution

Answer 1

Answer: The moles of sodium hydroxide is 1.5 moles.

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We are given:

Given mass of sodium hydroxide = 60 g

Molar mass of sodium hydroxide = 40 g/mol

Putting values in above equation, we get:

$\text{Moles of sodium hydroxide}=\frac{60g}{40g/mol}=1.5mol$

Hence, the moles of sodium hydroxide is 1.5 moles.