Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 51

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IMPORTANT

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Vapour density of a gas if its density is $0.178 g / L$ at $NTP$ is:

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Important Questions on Mole Concept

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Chemistry

IMPORTANT

Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 52

A nugget of gold and quartz was found to contain

' x' g

of gold and

' y' g

of quartz and has density

d

. If the densities of gold and quartz are

d_{1}

and

d_{2}

, respectively then the correct relation is:

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Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 53

The atomic weights of two elements

A

and

B

are

40

and

80

, respectively. If

' x' g

of

A

contains

y

atoms, how many atoms are present in

' 2 x' g

of

B

?

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Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 54

The weight of

112 mL

of

{SO}_{2}

gas at

STP

on liquefaction would be:

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Chemistry

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Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 55

The equation $2 Al (s) + \frac{3}{2} O_{2} (g) ⟶ {Al}_{2} O_{3} (s)$ shows that:

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Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 56

Methyl

- t -

butyl ether,

C_{5} H_{12} O

, is added to gasoline to promote cleaner burning. How many moles of oxygen gas (

O_{2}

) are required to burn

1.0 mol

of this compound completely to form carbon dioxide and water?

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Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 57

In the reaction

2 {KClO}_{3} \to 2 KCl + 3 O_{2}

, when

36.75 g

of

{KClO}_{3}

is heated, the volume of oxygen evolved at NTP will be:

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Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 58

Zinc and hydrochloric acid react according to the reaction:

$Zn (s) + 2 HCl (aq) ⟶ {ZnCl}_{2} (aq) + H_{2} (g)$

If $0.30 mole$ of $Zn$ is added to hydrochloric acid containing $0.52 mole$ of $HCl$ , how many moles of $H_{2}$ are produced?

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Chemistry Crash Course BITSAT>Chapter 1 - Mole Concept>Exercise 1>Q 59

How many moles of Lead $(II)$ Chloride will be formed from a reaction between $6.5 g$ of $PbO$ and $3.2 g$ of $HCl$

Given the atomic mass of $(Pb = 207.2)$