Science>Chemistry>Atoms and Molecules>Molecular Mass and Mole Concept

Molecular Mass and Mole Concept

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Molecular Mass and Mole Concept: Overview

This topic covers concepts, such as Molecular Mass, Calculation of Molecular Mass of Compounds, Formula Unit Mass, Calculation of Formula Unit Mass of Sodium Chloride, Mole Concept, Avogadro's Number, Gram Molecular Mass, Relation between Mole and Relative Mass, Relation between Mole and Number of Particles, Calculation of Number of Moles from Given Mass, Calculation of Number of Moles in Given Number of Atoms, Calculation of Mass from Number of Particles, Calculation of Mass from Number of Moles, Calculation of Mass from Number of Atoms, Calculation of Mass from Number of Molecules, Calculation of Number of Particles from Mass, Calculation of Number of Particles from given Mass of Atoms, Calculation of Number of Particles from given Mass of Molecules, Stoichiometry and Stoichiometric Calculations, Calculations Involving Mole-mole Relation, Calculations Involving Mole-weight Relation, Calculations Involving Mole-volume Relation, Calculations Involving Weight-weight Relation, Calculations Involving Weight-volume Relation, Limiting Reagent & Calculation of Number of Moles Using a Limiting Reagent etc.

Important Questions on Molecular Mass and Mole Concept

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 1

Which one of the following will have the largest number of atoms?

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 2

$1.0$ Kg of iron $(Fe)$ , having atomic mass equal to $56 g {mol}^{- 1}$ contains

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 3

The volume occupied by half a mole of a gas at standard temperature and pressure is:

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 4

25 grams of water contain

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 5

Which has the maximum number of atoms?

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 6

What is the mass of 2.5 moles of ${CO}_{2}$ ?

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 7

The number of moles present in $0.36 g$ of water.

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 8

Substances having an equivalent number of molecules as in $9 g$ of water:

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 9

Number of molecules present in $0.25$ moles of water are:

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 10

Which of the following contains the maximum number of atoms

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 11

One mole of ${SO}_{2}$ means

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 12

Convert $20 g$ of water into moles.

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 13

The visible universe is estimated to contain $10^{22}$ stars. How many moles of stars are present in the visible universe.

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 14

What is the molar mass of Nitric acid? $[H = 1 u, N = 14 u, O = 16 u]$

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 15

How many moles of $NaOH$ are present in $160 g$ of $NaOH .$

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 16

The greater number of water molecule will be in

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 17

Percentage purity of a sample of gold is $85 % .$ How many atoms of gold are present in $1 g$ sample (Atomic mass of gold = $197 u$ ).

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 18

The number of moles present in $9.033 \times 10^{24}$ atoms of helium are

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 19

Mass of $56 cc of CO$ (carbon monoxide) at STP will be

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Science>Atoms and Molecules>Molecular Mass and Mole Concept> Q 20

One mole of compound $x_{m} y_{m}$ is completely ionised. How many moles of ions are produced in all?