Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 9

EASY

JEE Main

IMPORTANT

Earn 100

How many grams are contained in $1$ $gram - atom$ of $Na$ ?

75% studentsanswered this correctly

Important Questions on Elementary Problems Based on Definition of Mole: The Mole Concept

MEDIUM

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 10

The weight of $350 mL$ of a diatomic gas at $0 ° C$ and $2$ $atm$ pressure is $1 g$ . The weight of one atom is:

(N

is the Avogadro's constant

)

MEDIUM

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 11

The number of atoms present in

16 g

of oxygen is

EASY

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 12

1 mol

of a compound contains

1 mol

of

C

and

2 mol

of

O

. The molar mass of the compound is

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 13

The volume of a gas at

0 ° C

and

700 mm

pressure is

760 cc

. The number of molecules present in this volume is

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 14

1

mole of a diatomic element,

X_{2}

, contains

34

and

40

moles of electrons and neutrons, respectively. The isotopic formula of the element is:

EASY

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 15

2

moles of hydrogen atoms at

NTP

occupy a volume of

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 16

The number of electrons in $1.8 mL$ of $H_{2} O$ is:

(Avogadro's number, $N_{A} = 6.022 \times 10^{23}$ )

EASY

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 1 - Elementary Problems Based on Definition of Mole: The Mole Concept>Objective Problems>Q 17

The molecular weight of a gas in grams,

11.2 L

of which at NTP weighs

14 g

, is