What is the number of moles of O-atom in 126 amu of $H N O_{3}$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

\frac{2}{N_{A}}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

\frac{6}{N_{A}}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D
Molar mass of $H N O_{3}$ = 1+14+16×3 = 63amu
no. of moles= $\frac{g i v e n m a s s}{m o l a r m a s s} = \frac{126}{63} = 2$
1 mole of $H N O_{3} = 3 a t o m s o f o x y g e n$
2 mole of $H N O_{3}$ = $2 \times 3 = 6 a t o m s o f o x y g e n$
1 mole = $6.022 \times 10^{23}$ or $N_{A}$ .
$n o o f m o l e s o f o x y g e n = \frac{g i v e n a t o m s}{A v a g a d r o n o . (N_{A})} = \frac{6}{N_{A}}$

Suggest Corrections

Similar questions

126

{H N O}_{3}

{N a}_{2} S_{4} O_{6}

0.5

{N a}_{2} S_{2} O_{3}

1.2 \times 10^{26}

N_{A} = 6 \times 10^{23}

Join BYJU'S Learning Program