The number of atoms in 4.25 g of NH_3 is app | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The molar mass of $NH_3 = 14 + (3 	imes 1) = 17 \ g/mol$. Number of moles of $NH_3 = \frac{4.25 \ g}{17 \ g/mol} = 0.25 \ mol$. Number of molecul

Vedclass · Accepted Answer

$6 	imes 10^{23}$

Vedclass · Answer

(D) The molar mass of $NH_3 = 14 + (3 	imes 1) = 17 \ g/mol$. Number of moles of $NH_3 = \frac{4.25 \ g}{17 \ g/mol} = 0.25 \ mol$. Number of molecules of $NH_3 = 0.25 	imes 6.022 	imes 10^{23} \approx 1.5055 	imes 10^{23}$. Each molecule of $NH_3$ contains $4$ atoms ($1$ nitrogen and $3$ hydrogen). Total number of atoms $= 4 	imes 1.5055 	imes 10^{23} \approx 6.022 	imes 10^{23} \approx 6 	imes 10^{23}$.

The number of atoms in $4.25 \ g$ of $NH_3$ is approximately

Similar Questions

The number of neutrons in $5 \ g$ of $D_2O$ ($D$ is $_1^2H$) are ................ $N_A$.

The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is $1 : 4$. The ratio of the number of their molecules is:

$5.6 \, L$ of oxygen at $STP$ contains .............

What is the total number of moles of $C$ atoms and $H$ atoms respectively present in $n$ moles of the following molecule?

The mass of a molecule of water is

Vedclass Test Series

Exam Paper Generator

Online Exam Module