Calculate the molecular weight of C₃H₅N₃O₃.

• A. 123.80 g/mol
• B. 131.10 g/mol
• C. 136.90 g/mol
• D. 147.10 g/mol

Answer: (B)

Verified step by step guidance

1. Identify the elements present in the compound C3H5N3O3: Carbon (C), Hydrogen (H), Nitrogen (N), and Oxygen (O).
2. Determine the number of atoms of each element in the molecular formula: 3 Carbon atoms, 5 Hydrogen atoms, 3 Nitrogen atoms, and 3 Oxygen atoms.
3. Find the atomic weight of each element using the periodic table: Carbon (C) is approximately 12.01 g/mol, Hydrogen (H) is approximately 1.01 g/mol, Nitrogen (N) is approximately 14.01 g/mol, and Oxygen (O) is approximately 16.00 g/mol.
4. Calculate the total weight contribution of each element by multiplying the number of atoms by the atomic weight: \(3 \times 12.01\) for Carbon, \(5 \times 1.01\) for Hydrogen, \(3 \times 14.01\) for Nitrogen, and \(3 \times 16.00\) for Oxygen.
5. Add the total weight contributions of all elements to find the molecular weight of C3H5N3O3: \((3 \times 12.01) + (5 \times 1.01) + (3 \times 14.01) + (3 \times 16.00)\).