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molecular physics - summer task
0
votes
Task 3.
When 20 ml mixture of O
_{2}
and O
_{3}
is burned, the volume became 29 ml and invisible in basis Pyrogallol solution.
What is the volume in% of Oxygen gas in real mixture?
asked
Jul 11, 2017
in
Physics
by
miller
(
160
points)
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1 Answer
0
votes
The reaction equation
2O
_{3}
→ 3O
_{2}
x+y=20
3/2 x+y=29
Thus,
1/2 x=29-20=9
So,
x=2(9)=18.
y=20-18=2.
The volume % of Oxygen gas in real mixture is
2/20 100%=10%.
answered
Jul 11, 2017
by
admin
(
2,270
points)
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