Which of the following is the correct molar mass (to two decimal places) of silver nitrate, AgNO_3?

• A. 123.88 g/mol
• B. 186.88 g/mol
• C. 107.87 g/mol
• D. 169.87 g/mol

Answer: (D)

Verified step by step guidance

1. Identify the atomic masses of each element in silver nitrate (AgNO_3) from the periodic table: silver (Ag), nitrogen (N), and oxygen (O).
2. Write down the chemical formula of silver nitrate: AgNO_3, which means it contains 1 atom of silver, 1 atom of nitrogen, and 3 atoms of oxygen.
3. Calculate the total molar mass by summing the atomic masses multiplied by their respective number of atoms: \(\text{Molar mass} = (1 \times M_{Ag}) + (1 \times M_{N}) + (3 \times M_{O})\).
4. Substitute the atomic masses into the formula and perform the addition to find the molar mass of AgNO_3.
5. Round the final result to two decimal places to match the required precision.