QQuestionChemistry
QuestionChemistry
What is the molar mass of ammonia (NH₃)?
15 g/mol
17 g/mol
42 g/mol
43 g/mol
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Answer
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Step 1:I'll solve this step-by-step using precise LaTeX formatting:
Step 2:: Identify the elements in ammonia (NH₃)
- Nitrogen (N): 1 atom - Hydrogen (H): 3 atoms
Step 3:: Look up atomic masses
- Atomic mass of Nitrogen (N): $$14.0 \text{ g/mol}
- Atomic mass of Hydrogen (H): 1.0 \text{ g/mol}
Step 4:: Calculate total molar mass
- Total molar mass: $$14.0 \text{ g/mol} + 3.0 \text{ g/mol} = 17.0 \text{ g/mol}
- Hydrogen contribution: 3 \times 1.0 \text{ g/mol} = 3.0 \text{ g/mol}
Final Answer
The correct answer is 17 g/mol.
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