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Question

The gases chlorine, nitrogen, ammonia and sulphur dioxide are collected under the same conditions of temperature and pressure. If 20 litres of nitrogen contains 'x' no. of molecules, state the no. of molecules in 20 litres of ammonia.

A
x
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B
x/2
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C
x/4
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D
2x
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Solution

The correct option is A x
According to avagadro's law, equal volume of gases contains equal number of molecules. Therefore, 20 litres of ammonia will contain x number of molecule.

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