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Solved: Are these data sets on chemical changes consistent

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

Solution for problem 47P Chapter 3

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 47P

Are these data sets on chemical changes consistent with the law of conservation of mass?

(a) A 7.5-g sample of hydrogen gas completely reacts with 60.0 g of oxygen gas to form 67.5 g of water.

(b) A 60.5-g sample of gasoline completely reacts with 243 g of oxygen to form 206 g of carbon dioxide and 88 g of water.

Step-by-Step Solution:

Solution 47P :

Step 1:

Here among the given data sets we have to check if chemical changes are consistent with the law of conservation of mass.

(a) A 7.5-g sample of hydrogen gas completely reacts with 60.0 g of oxygen gas to form 67.5 g of water :

        So, the reaction happening here is :

                7.5 g of hydrogen + 60.0 g of oxygen →  67.5 g of Water

                                               

                            Reactants                                    Product

        According to law of conservation of mass, ‘In any chemical reaction, the total mass of the reactants must be equal to the total mass of the products’. The total mass of reactants here is 67.5 g. And given the Mass of water, the product produced is 67.5 g. Hence, the above reaction is consistent with the law of conservation of mass.

Step 2 of 2

Chapter 3, Problem 47P is Solved
Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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Solved: Are these data sets on chemical changes consistent

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