What is the Molar Mass of Silver Nitrate?

The molar mass of silver nitrate (AgNO₃) is 169.87 g/mol. This is found by adding the molar masses of each element in the compound silver nitrate. You need to add the molar masses of silver (Ag), nitrogen (N), and three oxygen (O) atoms. 

How to Calculate the Molar Mass of Silver Nitrate?

To find the molar mass of silver nitrate (AgNO₃), we need to calculate the total mass of one mole of its molecules by adding the atomic masses of all the atoms in the compound. The atomic masses of the elements are obtained from the periodic table.

Step 1: Identify the chemical formula

The chemical formula of silver nitrate is AgNO₃. This means it consists of:

• 1 atom of Silver (Ag),
• 1 atom of Nitrogen (N), and
• 3 atoms of Oxygen (O).

Step 2: Atomic masses of the elements

From the periodic table, the atomic masses of the elements are approximately:

• Silver (Ag) = 107.87 u,
• Nitrogen (N) = 14.01 u,
• Oxygen (O) = 16.00 u.

Step 3: Calculate the molar mass

Now, multiply the atomic mass of each element by the number of atoms present in the formula and add them together:

1. Silver (Ag): 1×107.87= 107.87 u
2. Nitrogen (N): 1×14.01=14.01 u
3. Oxygen (O): 3×16.00=48.00 u

Add these values together:

107.87 u+14.01 u+48.00 u=169.88 u

Thus, the molar mass of silver nitrate (AgNO₃) is 169.88 g/mol.

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