MasteringChemistry: CH 3 HWK . Google Chrome Secure https session mastenngchemis

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MasteringChemistry: CH 3 HWK . Google Chrome Secure https session mastenngchemistry.com/myct itemView?assignmentProblembdSS9729&ortset.net; CH 3 HWK Problem 3.36 with feedback ) 3 of 144 Part C Number of molecules in 8467 10-2 mol C&Hs; Express the amount in molecules to four significant digits. Calculate the following quantities You may want to reference (Pages 91-97) Section 3.4 while completing this problem amount of CiHo molecules Submit Part D Number of O atoms in 8 25-10 mol Al(NOs) Express the amount in atoms to three significant digits amount of O atoms Submit Provide Feedback Next >

Explanation / Answer

Part C:

1 mole of C6H6 contains 6.023*10^23 (avagadro number)molecules

8.467*10^-2 moles of C6H6 contains (6.023*10^23*8.467*10^-2)= 51.0*10^21 molecules of C6H6

Part D:

1 mole of Al(NO3)3 contains 3*3=9 oxygen atoms

8.25*10^-3 moles of Al(NO3)3 contains 9*8.25*10^-3=74.25*10^-3 oxygen atoms.

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