3) Calculate the atomicity of the following compounds:-
(1) O3
(2) CH4
(3) Carbonate
(4) NO2
(5) NH3
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Answer:
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Class 11
>>Chemistry
>>Some Basic Concepts of Chemistry
>>Atomic and Molecular Masses
>>Calculate the molecular masses of the fo
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Calculate the molecular masses of the following :
(a) Hydrogen , H
2
(b) Oxygen , O
2
(c) Chlorine , Cl
2
(d) Ammonia , NH
3
(e) Carbon dioxide , CO
2
(Atomic masses : C=12u;H=1u;O=16u;Cl=35.5u;N=14u )
Medium
Solution
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(a) Molecular mass of Hydrogen (H
2
)=2×H=2×1u=2u
(b) Molecular mass of Oxygen (O
2
)=2×O=2×16u=32u
(c) Molecular mass of Chlorine (Cl
2
)=2×Cl=2×35.5=71u
(d) Molecular mass of Ammonia (NH
3
)=1×N+3×H=14+3=17u
(e) Molecular mass of Carbon dioxide (CO
2
)=1×C+2×O=12+32=44u
Explanation:
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Calculate the atomicity of the following compounds:-
(1) O3
(2) CH4
(3) Carbonate
(4) NO2
(5) NH3