Chemistry

Question Analysis
This question evaluates the student's ability to determine the empirical formula from the percent composition of a compound.

Key Concept Explanation
To find the empirical formula, convert the percent composition to moles, then divide each mole value by the smallest mole value to get the simplest whole-number ratio.

Step-by-step Solution
1. Assume 100 g sample:
Mass of N = 20.0 g
Mass of H = 2.67 g
Mass of O = 77.33 g
2. Calculate moles:
Moles of N:
Moles of H:
Moles of O:

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