Question

`Silver salts have antimicrobial properties--they can kill bacteria by interfering with certain proteins. Silver nitrate used to be given in drop form to newborns to prevent them from contracting gonorrhea from infected mothers. How many oxygen atoms would be in 2.0 moles of silver nitrate?

Answer 1

Answer:

3.6 × 10²⁴ atoms of O

Explanation:

Let's consider the molecular formula of silver nitrate: AgNO₃.

We can establish the following relations:

• 1 mol of AgNO₃ has 6.02 × 10²³ molecules of AgNO₃ (Avogadro's number).
• 1 molecule of AgNO₃ has 3 atoms of oxygen.

The atoms of oxygen in 2.0 moles of silver nitrate are:

$2.0molAgNO_{3}.\frac{6.02\times10^{23}moleculeAgNO_{3}  }{1molAgNO_{3}} .\frac{3atomO}{1moleculeAgNO_{3}} =3.6\times10^{24}atomO$