12.
Which of the following contain maximum number of atoms?
1) 19 H2
2) 1 gram atom hydrogen
3) 1 gr.am molecule hydrogen
4) one gram CI,
is present in
Answers
Answer:
19 {hydrogen gas }¶atoms
i.e 38atoms
Answer:
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Some Basic Concepts of Chemistry
Mole Concept and Molar Masses
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Asked on December 30, 2019 by
Rheya Shekhawat
Which of the following contain maximum number of molecules?
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ANSWER
For a molecule,
molecular weight in grams = Avogadro's number(N
A
)=6.023×10
23
(A) 1g CO
2
44 gram of CO
2
=N
A
molecules
∴ 1 gram of CO
2
contains
44
1
×N
A
molecules
(B) 1g N
2
28 gram of N
2
=N
A
molecules
∴1 gram of N
2
contains
28
1
×N
A
molecules
(C) 1g H
2
2 gram of H
2
contains N
A
molecules
∴ 1 gram of H
2
contains
2
1
×N
A
molecules
(D) 1g CH
4
16 gram of CH
4
=N
A
molecules
∴ 1 gram of CH
4
=N
A
/16
Maximum number of molecules are found in 1 gram hydrogen.