Atomic mass comparison – how many times heavier is an oxygen atom than a hydrogen atom? Based on relative atomic masses (H ≈ 1, O ≈ 16), the oxygen atom is how many times heavier than the hydrogen atom?

Introduction / Context:Relative atomic masses allow quick comparisons of atomic weights and are foundational in stoichiometry and chemical balancing.

Given Data / Assumptions:

• Hydrogen standard atomic mass ≈ 1.
• Oxygen standard atomic mass ≈ 16.
• Use approximate integer values suitable for basic calculations.

Concept / Approach:The question asks for a ratio: mass(O) / mass(H). Using standard relative masses, this ratio is 16/1 = 16.

Step-by-Step Solution:Assign relative masses: H = 1, O = 16.Compute ratio = 16 / 1.Result = 16 times.

Verification / Alternative check:In water H2O, molecular mass = 2*1 + 16 = 18, further reinforcing oxygen’s much larger atomic mass relative to hydrogen.

Why Other Options Are Wrong:

• 2, 4, 8, 12 do not match standard atomic mass ratios.

Common Pitfalls:Confusing atomic number with atomic mass; atomic number counts protons, not mass units.

Final Answer:16