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Question

# Six hundred millilitres of ozonised oxygen at STP was found to weigh 1 g. What is the volume of ozone in the ozonized oxygen?

A
200 ml
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B
150 ml
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C
100 ml
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D
50 ml
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Solution

## The correct option is A 200 mlLet the volume of O3 be x mlVolume of O2 present =(600−x)ml22400 mI of O3 and O2 at STP will weigh 48 and 32 g, respectivelyThe weight of x ml of O3 = x×4822400gThe weight of (600−x)ml of O2=(600−x)22400×32 Total weight of ozonised O2 (600 ml) is 48x22400+(600−x)×3222400=1.0∴x=200ml

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