Calculate the percent composition of nitrogen in a compound with the formula . The molar mass of nitrogen is 14.0 g/mol and the molar mass of oxygen is 16.0 g/mol. The percent composition of nitrogen is _________%(Round to two decimal places).
Answer & Analysis
Analysis
Question Analysis
This question evaluates the student's ability to calculate the percent composition of an element in a compound using the given atomic masses and the formula for percent composition.
Key Concept Explanation
Percent composition is calculated by dividing the total mass of the element in one mole of the compound by the molar mass of the compound, then multiplying by 100%.
Step-by-step Solution
1. Calculate the molar mass of :
Molar mass of N = 14.0 g/mol
Molar mass of O = 16.0 g/mol
Molar mass of = (2 × 14.0) + (5 × 16.0) = 28.0 + 80.0 = 108.0 g/mol
2. Calculate the total mass of nitrogen in one mole of
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