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Calculate the mass percent composition of each element in

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 81P Chapter 6

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 81P

Calculate the mass percent composition of each element in each compound.

(a) C2H4O2

(b) CH2O2

(c) C3H9N

(d) C4H12N2

Step-by-Step Solution:
Step 1 of 3

Solution 81P

The percent composition of a compound is calculated with the molecular formula: divide the mass of each element found in one mole of the compound by the total molar mass of the compound.

a)Mass of C2H402 = 2(12) + 4(1) + 2(16) = 24 + 4 + 32 = 60

Mass of C is C2H402 = 2(12) = 24

Percentage mass = Mass of element in compound / Mass of total compound * 100

= 24/ 60 * 100 =40%

b)mass of  CH2O2= 12+2(1)+2(16)=46.

Mass of C inCH2O2=12

Percent...

Step 2 of 3

Chapter 6, Problem 81P is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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