Question

You used 300 grams of Na2CO3 to wash one load of laundry. How many moles of laundry detergent did you use?

Answer 1

Answer: The number of moles of laundry detergent used is, 2.83 moles.

Explanation : Given,

Mass of $Na_2CO_3$ = 300 g

Molar mass of $Na_2CO_3$ = 106 g/mol

Formula used :

$\text{Moles of }Na_2CO_3=\frac{\text{Given mass }Na_2CO_3}{\text{Molar mass }Na_2CO_3}$

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

$\text{Moles of }Na_2CO_3=\frac{300g}{106g/mol}$

$\text{Moles of }Na_2CO_3=2.83mol$

Therefore, the number of moles of laundry detergent used is, 2.83 moles.