4.88×1020 H2O2H2O2 molecules Express your answer using three significant figures.    Calculate the mass in grams of each sample.

Chemistry & Chemical Reactivity
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter2: Atoms Molecules And Ions
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Problem 81PS: Calculate the mass percent of copper in CuS, copper(II) sulfide. If you wish to obtain 10.0 g of...
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4.88×1020 H2O2H2O2 molecules
Express your answer using three significant figures. 
 
Calculate the mass in grams of each sample. 
Expert Solution
Step 1

Since,

Moles is the ratio of mass to the molar mass of that atom or molecules.

Also,

Number of atoms or molecules is the multiple of moles and avogadro's number.

Thus,

 

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