Khadki Bazar, Pune 
2 students Details verified of Jaini S.✕
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Online Classes Gujarati Mother Tongue (Native)
Hindi Proficient
English Proficient
Marathi Basic
P.E.S. Modern College of arts, science and commerce, Shivajinagar, Pune - 411005. 2017
Bachelor of Science (B.Sc.)
Nowrosjee Wadia College, Pune - 411001. 2019
MSc in Chemistry
Khadki Bazar, Pune, India - 411003
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Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Board
State
Subjects taught
English, Science
Taught in School or College
No
2 Students Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class I-V Tuition
1
Board
State, CBSE
Subjects taught
English, Marathi, Mathematics, Hindi, EVS, Science, Social Science
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Board
State
Subjects taught
Science, EVS
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Board
CBSE, State
Subjects taught
EVS, Social science, Science
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 7 Tuition
1
Board
CBSE, State
Subjects taught
Marathi, English, Mathematics, Science, EVS, Hindi, Social science
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 6 Tuition
1
Board
CBSE, State
Subjects taught
Hindi, EVS, Marathi, Social science, Mathematics, English, Science
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in BSc Tuition
1
BSc Chemistry Subjects
Polymer Chemistry, Analytical Chemistry, Industrial Chemistry, Concepts In Inorganic Chemistry, Organic Functional Groups, Inorganic Qualitative & Quantitative Analysis, Transition Elements And Nuclear Chemistry, Organic Qualitative & Quantitative Analysis
Type of class
Regular Classes
Class strength catered to
Group Classes, One on one/ Private Tutions
Taught in School or College
No
BSc Branch
BSc Chemistry
Answered on 08/11/2019
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Like 0 
Answers 403 
Comments Answered on 09/10/2019 Learn CBSE - Class 9/Science/Unit 1-Matter - Its Nature & Behaviour/Atoms and Molecules/NCERT Solutions/NCERT Exercise 3
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Like 0 Answers 3 Comments Answered on 09/10/2019 Learn CBSE - Class 9/Science/Unit 1-Matter - Its Nature & Behaviour/Atoms and Molecules/NCERT Solutions/NCERT Exercise 3
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Answer :-
a)Given mass of oxygen gas = 12 g
Molar mass of oxygen gas ( O₂) = 2 x 16 = 32 g
No. of moles = given mass / molar mass = 12/32 = 0.375 moles
b) Given mass of water = 20 g
Molar mass of water (H₂O) = 2 x 1 + 16 = 18 g
No. of moles = given mass / molar mass = 20/18 = 1.11 moles
c) Given mass of carbon dioxide = 22 g
Molar mass of carbon dioxide (CO₂) = 12 + 2 x 16 = 44 g
No. of moles = given mass / molar mass = 22/44 = 0.5 moles
Like 0 Answers 2 Comments Answered on 09/10/2019 Learn CBSE - Class 9/Science/Unit 1-Matter - Its Nature & Behaviour/Atoms and Molecules/NCERT Solutions/NCERT Exercise 3
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Answer :-
(a) Molar mass of ethyne, C2H2 = Mass of C × 2 + Mass of H × 2
= 12 × 2 + 1 × 2
= 24 + 2
= 26 g/mol
(b) Molar mass of sulphur molecule, S8 = Mass of S × 8
= 32 × 8
= 256 g/mol
(c) Molar mass of phosphorus molecule , P4 = Mass of P × 4
= 31 × 4
= 124 g/mol
(d) Molar mass of hydrochloric acid, HCl = Mass of H + Mass of Cl
= 1 + 35.5
= 36. 5 g/mol
(e) Molar mass of nitric acid , HNO3 = Mass of H + Mass of N + Mass of O × 3
= 1 + 14 + 16 × 3
= 15 + 48
= 63 g/mol
Like 0 Answers 2 Comments Answered on 09/10/2019 Learn CBSE - Class 9/Science/Unit 1-Matter - Its Nature & Behaviour/Atoms and Molecules/NCERT Solutions/NCERT Exercise 3
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Answer :-
(a) Magnesium chloride : MgCl2
(b) Calcium oxide : CaO
(c) Copper nitrate : i) CuNO3 [for Cu(I)]
OR
ii) Cu(NO3)2 [for Cu(II)]
(d) Aluminium chloride : AlCl3
(e) Calcium carbonate : CaCO3
Like 0 Answers 2 Comments Ask a Question
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Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Board
State
Subjects taught
English, Science
Taught in School or College
No
2 Students Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class I-V Tuition
1
Board
State, CBSE
Subjects taught
English, Marathi, Mathematics, Hindi, EVS, Science, Social Science
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Board
State
Subjects taught
Science, EVS
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Board
CBSE, State
Subjects taught
EVS, Social science, Science
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 7 Tuition
1
Board
CBSE, State
Subjects taught
Marathi, English, Mathematics, Science, EVS, Hindi, Social science
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 6 Tuition
1
Board
CBSE, State
Subjects taught
Hindi, EVS, Marathi, Social science, Mathematics, English, Science
Taught in School or College
No
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in BSc Tuition
1
BSc Chemistry Subjects
Polymer Chemistry, Analytical Chemistry, Industrial Chemistry, Concepts In Inorganic Chemistry, Organic Functional Groups, Inorganic Qualitative & Quantitative Analysis, Transition Elements And Nuclear Chemistry, Organic Qualitative & Quantitative Analysis
Type of class
Regular Classes
Class strength catered to
Group Classes, One on one/ Private Tutions
Taught in School or College
No
BSc Branch
BSc Chemistry
Answered on 08/11/2019
Ask a Question
Post a Lesson
Like 0 Answers 403 Comments Answered on 09/10/2019 Learn CBSE - Class 9/Science/Unit 1-Matter - Its Nature & Behaviour/Atoms and Molecules/NCERT Solutions/NCERT Exercise 3
Ask a Question
Post a Lesson
Like 0 Answers 3 Comments Answered on 09/10/2019 Learn CBSE - Class 9/Science/Unit 1-Matter - Its Nature & Behaviour/Atoms and Molecules/NCERT Solutions/NCERT Exercise 3
Ask a Question
Post a Lesson
Answer :-
a)Given mass of oxygen gas = 12 g
Molar mass of oxygen gas ( O₂) = 2 x 16 = 32 g
No. of moles = given mass / molar mass = 12/32 = 0.375 moles
b) Given mass of water = 20 g
Molar mass of water (H₂O) = 2 x 1 + 16 = 18 g
No. of moles = given mass / molar mass = 20/18 = 1.11 moles
c) Given mass of carbon dioxide = 22 g
Molar mass of carbon dioxide (CO₂) = 12 + 2 x 16 = 44 g
No. of moles = given mass / molar mass = 22/44 = 0.5 moles
Like 0 Answers 2 Comments Answered on 09/10/2019 Learn CBSE - Class 9/Science/Unit 1-Matter - Its Nature & Behaviour/Atoms and Molecules/NCERT Solutions/NCERT Exercise 3
Ask a Question
Post a Lesson
Answer :-
(a) Molar mass of ethyne, C2H2 = Mass of C × 2 + Mass of H × 2
= 12 × 2 + 1 × 2
= 24 + 2
= 26 g/mol
(b) Molar mass of sulphur molecule, S8 = Mass of S × 8
= 32 × 8
= 256 g/mol
(c) Molar mass of phosphorus molecule , P4 = Mass of P × 4
= 31 × 4
= 124 g/mol
(d) Molar mass of hydrochloric acid, HCl = Mass of H + Mass of Cl
= 1 + 35.5
= 36. 5 g/mol
(e) Molar mass of nitric acid , HNO3 = Mass of H + Mass of N + Mass of O × 3
= 1 + 14 + 16 × 3
= 15 + 48
= 63 g/mol
Like 0 Answers 2 Comments Answered on 09/10/2019 Learn CBSE - Class 9/Science/Unit 1-Matter - Its Nature & Behaviour/Atoms and Molecules/NCERT Solutions/NCERT Exercise 3
Ask a Question
Post a Lesson
Answer :-
(a) Magnesium chloride : MgCl2
(b) Calcium oxide : CaO
(c) Copper nitrate : i) CuNO3 [for Cu(I)]
OR
ii) Cu(NO3)2 [for Cu(II)]
(d) Aluminium chloride : AlCl3
(e) Calcium carbonate : CaCO3
Like 0 Answers 2 Comments Ask a Question
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