What is the oxygen-to-hydrogen mass ratio in hydrogen peroxide (H2O2)?

• A. 8:1
• B. 16:1
• C. 2:1
• D. 1:1

Answer: (B)

Verified step by step guidance

1. Identify the molecular formula of hydrogen peroxide, which is H\_2O\_2, meaning it contains 2 hydrogen atoms and 2 oxygen atoms.
2. Find the atomic masses of hydrogen and oxygen from the periodic table: approximately 1 g/mol for hydrogen and 16 g/mol for oxygen.
3. Calculate the total mass of hydrogen in one molecule of H\_2O\_2 by multiplying the number of hydrogen atoms by the atomic mass of hydrogen: \$2 \times 1 = 2$ g/mol.
4. Calculate the total mass of oxygen in one molecule of H\_2O\_2 by multiplying the number of oxygen atoms by the atomic mass of oxygen: \$2 \times 16 = 32$ g/mol.
5. Determine the oxygen-to-hydrogen mass ratio by dividing the total oxygen mass by the total hydrogen mass: \(\frac{32}{2} = 16\), so the ratio is 16:1.