a gaseous mixture contains oxygen and nitrogen in the ratio 1:4 by weight the ratio of their number of molecules
Answers
Answered by
1
Answer:
Explanation:
Molar ratio of oxygen (O
2
) : nitrogen (N
2
) =
32
1
:
28
4
∴ Ratio of their molecules =
32
N
A
:
28
4N
A
⇒7:32
Answered by
2
The number of molecules of a gas is given by the expression,
Numberofmolecules=
Molecularweight
Weight
×N
A
.
Here, N
A
is the Avogadro number.
Assume 1 g and 4 g of oxygen and nitrogen respectively.
Numberofmoleculesofoxygen=
32
1
×N
A
Numberofmoleculesofnitrogen=
28
4
×N
A
The ratio of the number of molecules of oxygen to nitrogen will be =
28
4N
A
32
N
A
=
32
7
=7:32
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