(B) The mass of $4.6 \times 10^{22}$ atoms is $13.8 \, g$. We know that $1 \, mol$ of an element contains $6.022 \times 10^{23}$ atoms (approximated a

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

(B) The mass of $4.6 \times 10^{22}$ atoms is $13.8 \, g$. We know that $1 \, mol$ of an element contains $6.022 \times 10^{23}$ atoms (approximated as $6 \times 10^{23}$ atoms). Atomic mass $= \frac{\text{Mass} \times N_A}{\text{Number of atoms}} = \frac{13.8 \, g \times 6 \times 10^{23}}{4.6 \times 10^{22}}$. Atomic mass $= 3 \times 60 = 180 \, g \, mol^{-1}$.

Class 11 Chemistry Some Basic Concepts of Chemistry Atomic, Molecular and Equivalent masses

Easy

If an element with a mass of $13.8 \, g$ contains $4.6 \times 10^{22}$ atoms,then the atomic mass of the element will be ..............

A
$290$
B
$180$
C
$138$
D
$13.8$

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

Some Basic Concepts of Chemistry

Subtopic

Atomic, Molecular and Equivalent masses

$1 \ g$ of hydrogen combines with $80 \ g$ of bromine. $1 \ g$ of calcium (valency $= 2$) combines with $4 \ g$ of bromine. The equivalent weight of calcium is ...

Medium

View Solution

The atomic weight of $Ne$ is $20.2$. It is a mixture of $Ne^{20}$ and $Ne^{22}$. What is the relative abundance of the heavier isotope (in $\%$)?

Difficult

View Solution

Which of the following is true about sodium chloride?

EasyAP EAMCET 2020

View Solution

Atomic weight of an element is $x$. The actual mass of one atom of that element is

Easy

View Solution

The $2\,N$ aqueous solution of $H_2SO_4$ contains

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

If an element with a mass of $13.8 \, g$ contains $4.6 \times 10^{22}$ atoms,then the atomic mass of the element will be ..............

Similar Questions

$1 \ g$ of hydrogen combines with $80 \ g$ of bromine. $1 \ g$ of calcium (valency $= 2$) combines with $4 \ g$ of bromine. The equivalent weight of calcium is ...

The atomic weight of $Ne$ is $20.2$. It is a mixture of $Ne^{20}$ and $Ne^{22}$. What is the relative abundance of the heavier isotope (in $\%$)?

Which of the following is true about sodium chloride?

Atomic weight of an element is $x$. The actual mass of one atom of that element is

The $2\,N$ aqueous solution of $H_2SO_4$ contains

Vedclass Test Series

Exam Paper Generator

Online Exam Module