**A**

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%.

**143**Views

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QA › Physics › molecular physics – summer task
**Q**
# molecular physics – summer task

**A**

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?

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%.

3 years ago **143** Views

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