Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept

Mole Concept

Author:Dr. S P Jauhar & R Jauhar

9th CBSE

IMPORTANT

Mole Concept: Overview

In this topic, you will learn about the mole concept. One mole of any species is that quantity in number having a mass equal to its atomic or molecular mass in grams.

Important Questions on Mole Concept

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 1

What is meant by 1 mol of carbon atoms?

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 2

The number of oxygen atoms in $1$ mole of ozone are $2.5$ times more than the number of oxygen atoms in $1$ mole of $H_{2} O_{2}$ .

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 3

1 moI of copper and silver contain the same number of atoms.

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 4

$0.1$ mol of oxygen gas contains $1.244 \times 10^{23}$ atoms of oxygen.

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 5

The mass of a hydrogen atom is $\frac{1}{2}$ ^th the mass of a carbon atom.

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 6

Mass of 1 mole of ${CO}_{2}$ is 44 g.

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 7

One mole of ${CO}_{2}$ and ${SO}_{2}$ contains the same number of oxygen atoms.

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 8

Calculate the number of moles in $2.4 g$ of $O_{3}$ .

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 9

Calculate the number of moles in $16 g$ of ${SO}_{2}$ .

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 10

Calculate the number of moles in $2.2 g$ of ${CO}_{2}$ .

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 11

Calculate the number of moles in $17 g$ of $H_{2} O_{2}$ .

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 12

What is the mass of 1 mole of water?

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Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Atoms and Molecules>Mole Concept> Q 13

What is mole? How is it related to molar mass?