Question #0cfa7

1 Answer
Apr 20, 2016

mass = 23.17g

Explanation:

First, we'll find the number of moles of (NH_4)_2SO_4 needed. To do this, we'll use the equation: moles = concentration * volume:
moles = 0.25 * 0.07L (Convert volume to litres)
= 0.0175mol of (NH_4)_2SO_4

But because the question asks for mass, so we'll need to find that using the question: mass = moles * molar mass.
mass = 0.175mol * ((14.01+1.008*4)*2+32.07+16.00*4)
mass = 0.175*132.154
mass = 23.17g (result will always be in grams)

Note if you need help finding molar mass, please say so