QQuestionChemistry
QuestionChemistry
What is the molar mass of sodium nitrate, NaNO₃?
A. 52.995 g/mol
B. 68.995 g/mol
C. 72.991 g/mol
D. 84.994 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 chemical formula
The chemical formula is $$NaNO_{3}$$, which contains:
- 1 sodium (Na) atom - 1 nitrogen (N) atom - 3 oxygen (O) atoms
Step 3:: Look up atomic masses
- Oxygen (O): $$16.000 \text{ g/mol}
- Nitrogen (N): 14.007 \text{ g/mol}
Step 4:: Calculate total molar mass
\begin{align}
\text{Molar Mass} &= m_{Na} + m_{N} + 3 \times m_{O} \ &= 22.990 + 14.007 + 3 \times 16.000 \ &= 22.990 + 14.007 + 48.000 \ &= 84.997 \text{ g/mol} \end{align}
Step 5:: Compare to given options
The calculated value of $$84.994 \text{ g/mol}$$ matches option D.
Final Answer
D. 84.994 g/mol
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