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Question
Nitric acid is composed of $\mathrm{HNO}_{3}$ molecules. A sample weighing 4.50 g contains $4.30 \times 10^{22} \mathrm{HNO}_{3}$ molecules. How many nitrogen atoms are in this sample? How many oxygen atoms are in $61.0 \mathrm{~g}$ of nitric acid?Show more…
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Step 1
30 \times 10^{22}$ $\mathrm{HNO}_{3}$ molecules. Since each $\mathrm{HNO}_{3}$ molecule contains one nitrogen atom, the number of nitrogen atoms in the sample is equal to the number of $\mathrm{HNO}_{3}$ molecules. So, the number of nitrogen atoms in the sample Show more…
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