Question

There are 3.45 moles of (NH_4)_2 SO_4, how many grams is this?

Answer 1

455.4 g (NH_4)2 SO_4

Step-by-step explanation:

Given:

no of moles of (NH_4)2 SO_4 , n=3.45 moles

To find:

The mass (w) of (NH_4)2 SO_4 in 3.45 moles (n)of it.

Molar mass (M) of (NH_4)2 SO_4 = 132 g

No of moles n is given by the formula;

`n =(w)/(M)`

n is no. of moles

w is mass of the compound

M is the molar mass of the compound

Substituting the values in the formula,

`3.45=(w)/(132)`

w=3.45 × 132=455.4g