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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.