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What is the mass of: (a) 1 mole of nitrogen atoms? (b) 4 moles

Science

Class 9

NCERT

Chapter 1: Matter in Our Surroundings

9 questions

Chapter 2: Is Matter Around Us Pure?

13 questions

Chapter 3: Atoms and Molecules

16 questions

Calculate the molar mass of the following substances.

(a)

Ethyne,

C_{2} H_{2}

(b)

Sulphur molecule,

S_{8}

(c)

Phosphorus molecule,

P_{4}

(Atomic mass of phosporus

= 31

)

(d)

Hydrochloric acid,

H Cl

(e)

Nitric acid,

H N O_{3}

What is the mass of:

(a)

1

mole of nitrogen atoms?

(b)

4

moles of aluminium atoms(Atomic mass of aluminium

= 27)?

(c)

10

moles of sodium sulphite

(N a_{2} S O_{3})?

Convert into mole.

(a)

12

g of oxygen gas

(b)

20

g of water

(c)

22

g of carbon dioxide.

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Chapter 4: Structure of the Atom

19 questions

Chapter 5: The Fundamental Unit of Life

10 questions

Chapter 6: Tissues

15 questions

Chapter 7: Diversity in Living Organisms

6 questions

Chapter 8: Motion

18 questions

Chapter 9: Force and Laws of Motion

29 questions

Chapter 10: Work and Energy

23 questions

Chapter 11: Sound

25 questions

Chapter 12: Why do We Fall Ill?

6 questions

Chapter 13: Natural Resourses

6 questions

Chapter 14: Improvement in Food Resources

Chapter 15: Gravitation

29 questions

Question

Easy

Solving time: 3 mins

What is the mass of:
$(a)$ $1$ mole of nitrogen atoms?
$(b)$ $4$ moles of aluminium atoms(Atomic mass of aluminium $= 27)?$
$(c)$ $10$ moles of sodium sulphite $(N a_{2} S O_{3})?$

Name: Video solution 1: [Solved] What is the mass of:(a) 1 mole of nitrogen atoms?(b) 4 moles of aluminium atoms(Atomic mass of aluminium =27)?(c) 10 moles of sodium sulphite (Na2SO3)? - Science
Uploaded: 2023-02-07T12:02:20.000Z
Duration: 1 min
Description: Video solution 1: [Solved] What is the mass of:(a) 1 mole of nitrogen atoms?(b) 4 moles of aluminium atoms(Atomic mass of aluminium =27)?(c) 10 moles of sodium sulphite (Na2SO3)? - Science

Views: 6,605 students

Updated on: Feb 7, 2023

Book:

Science (NCERT)

Found 5 tutors discussing this question

Samuel Discussed

What is the mass of:

(a)

1

mole of nitrogen atoms?

(b)

4

moles of aluminium atoms(Atomic mass of aluminium

= 27)?

(c)

10

moles of sodium sulphite

(N a_{2} S O_{3})?

9 mins ago

Discuss this question LIVE

9 mins ago

Text solutionVerified

(a) 1 mole of nitrogen atoms = 1xmass of N = 1 x 14 = 14 g
(b) 4 moles of aluminium atoms = 4x27 = 108 g
(c) 10 moles of sodium sulphite(

N a_{2} S O_{3}

)=10 x Mass of

N a_{2} S O_{3}

Mass of

N a_{2} S O_{3}

=2xmass of N atom +1xmass of S atom +3xMass of O atom= 2x23+1x32+3x16=46+32+48= 126 g / mol

10 moles of

N a_{2} S O_{3}

= 10x126= 1260 g

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Practice more questions from Science (NCERT)

Calculate the molar mass of the following substances.

(a)

Ethyne,

C_{2} H_{2}

(b)

Sulphur molecule,

S_{8}

(c)

Phosphorus molecule,

P_{4}

(Atomic mass of phosporus

= 31

)

(d)

Hydrochloric acid,

H Cl

(e)

Nitric acid,

H N O_{3}

What is the mass of:

(a)

1

mole of nitrogen atoms?

(b)

4

moles of aluminium atoms(Atomic mass of aluminium

= 27)?

(c)

10

moles of sodium sulphite

(N a_{2} S O_{3})?

Convert into mole.

(a)

12

g of oxygen gas

(b)

20

g of water

(c)

22

g of carbon dioxide.

View all

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Question Text	What is the mass of: $(a)$ $1$ mole of nitrogen atoms? $(b)$ $4$ moles of aluminium atoms(Atomic mass of aluminium $= 27)?$ $(c)$ $10$ moles of sodium sulphite $(N a_{2} S O_{3})?$
Updated On	Feb 7, 2023
Topic	Atoms and Molecules
Subject	Science
Class	Class 9
Answer Type	Text solution:1 Video solution: 1
Upvotes	161
Avg. Video Duration	1 min

What is the mass of:
$(a)$ $1$ mole of nitrogen atoms?
$(b)$ $4$ moles of aluminium atoms(Atomic mass of aluminium $= 27)?$
$(c)$ $10$ moles of sodium sulphite $(N a_{2} S O_{3})?$

Text solutionVerified

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What is the mass of:(a) 1 mole of nitrogen atoms?(b) 4 moles of aluminium atoms(Atomic mass of aluminium =27)?(c) 10 moles of sodium sulphite (Na2​SO3​)?

Text solutionVerified

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What is the mass of:
$(a)$ $1$ mole of nitrogen atoms?
$(b)$ $4$ moles of aluminium atoms(Atomic mass of aluminium $= 27)?$
$(c)$ $10$ moles of sodium sulphite $(N a_{2} S O_{3})?$