How many moles of (NH_4)_2SO_4 are present in 25.0 grams of (NH_4)_2SO_4?

1 Answer
Apr 13, 2016

0.2 moles

Explanation:

Mass of one mole of Ammonium Sulfate is 132 g

We can set up conversion factors/ ratios

1 mol Ammonium Sulfate = 132g of (NH4)_2SO_4

1 mol Ammonium Sulfate / 132g of (NH4)_2SO_4 (a)

and

132g of (NH4)_2SO_4 / 1 mol of Ammonium Sulfate (b)

Using the conversion factor (a) we can find number of moles.

25 g (NH4)_2SO_4 x 1 mol of Ammonium sulfate / 132g of (NH4)_2SO_4

0.2 moles Ammonium sulfate