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Question

calculate the number of molecules of sulpher present in 128g of solid sulpher ?

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Solution

Dear User,

The number of molecules in a given mass of the substance = Mass of the substance in grams ×6.02×1023Gram atomic massGram atomic mass of S = 32.065 gMass of the substance =128 gTherefore, No. of molecules = 128×6.02×102332.065=2.403×1024 molecules

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