MHT CET · Chemistry · Some Basic Concepts of Chemistry
How many moles of nitrogen atoms are present in \(8 \mathrm{~g}\) of ammonium nitrate?
- A \(0.1 \mathrm{~mol}\)
- B \(0.2 \mathrm{~mol}\)
- C \(0.4 \mathrm{~mol}\)
- D \(0.8 \mathrm{~mol}\)
Answer & Solution
Correct Answer
(B) \(0.2 \mathrm{~mol}\)
Step-by-step Solution
Detailed explanation
Chemical formula of ammonium nitrate is
\(\mathrm{NH}_4 \mathrm{NO}_3 . \)
\( 1 \mathrm{~mol} \mathrm{NH}_4 \mathrm{NO}_3 \equiv 2 \mathrm{~mol} \mathrm{~N} \text {-atoms } \)
\( \therefore 80 \mathrm{~g} \mathrm{NH}_4 \mathrm{NO}_3^{-}=2 \mathrm{~mol} \mathrm{~N} \text {-atoms } \)
\( \therefore 8 \mathrm{~g} \mathrm{NH}_4 \mathrm{NO}_3=0.2 \mathrm{~mol} \mathrm{~N} \text {-atoms}\)
\(\mathrm{NH}_4 \mathrm{NO}_3 . \)
\( 1 \mathrm{~mol} \mathrm{NH}_4 \mathrm{NO}_3 \equiv 2 \mathrm{~mol} \mathrm{~N} \text {-atoms } \)
\( \therefore 80 \mathrm{~g} \mathrm{NH}_4 \mathrm{NO}_3^{-}=2 \mathrm{~mol} \mathrm{~N} \text {-atoms } \)
\( \therefore 8 \mathrm{~g} \mathrm{NH}_4 \mathrm{NO}_3=0.2 \mathrm{~mol} \mathrm{~N} \text {-atoms}\)
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