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JEE Main Chemistry question

ChemistrySome Basic Concepts of ChemistryJEE Main

A 19.6 g of a given gaseous sample contains 2.8 g of molecules ( g L), 11.2 g of molecules ( g L), and 5.6 g of molecules ( g L). All density measurements are made at STP. Calculate the total number of molecules () present in the given sample. Report your answer in ''. Assume Avogadro's number as .

Answer: 3

Solution

Each portion occupies the same volume at STP: L L, i.e. mol each.

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Question ID VK-130660