Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter2: Atoms Molecules And Ions
Section: Chapter Questions
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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Question
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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