Be sure to answer all parts. (a) Calculate the number of oxygen molecules and the number of oxygen atoms in 39.5 g of O2. oxygen molecules =      ×  10          oxygen atoms =      ×  10    Enter your answers in scientific notation. (b) Calculate the mass of 9.17 ×1014 SO3 molecules. × 10  g Enter your answer in scientific notation.

Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter3: Measurement And Chemical Calculations
Section: Chapter Questions
Problem 63E: The mole is the SI unit for the amount of a substance. The mass of one mole of pure table sugar is...
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Be sure to answer all parts.
 
(a) Calculate the number of oxygen molecules and the number of oxygen atoms in 39.5 g of O2.
 
oxygen molecules = 
 
 
×
 10
 

 
      oxygen atoms = 
 
 
×
 10
 

 
Enter your answers in scientific notation.
 
(b) Calculate the mass of 9.17 ×1014 SO3 molecules.
 × 10  g
 
Enter your answer in scientific notation.
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