Chemistry: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN: 9780078746376
Author: Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher: Glencoe/McGraw-Hill School Pub Co
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Chapter 3, Problem 75A
Interpretation Introduction

Interpretation:

The mass percent of oxygen in magnesium oxide needs to be determined.

Concept introduction:

For any compound, the mass percent of any element present in it can be calculated as follows:

%m=melementmcompound×100%

Expert Solution & Answer
Check Mark

Answer to Problem 75A

39.70%

Explanation of Solution

The mass of magnesium is 10.57 g and that of oxygen is 6.96 g. It is given that both the reactants completely react to form magnesium oxide.

According to the law of conservation of energy, total mass of reactants will be equal to products. In this case,

mMg+mO2=mMgO

Putting the values,

mMgO=(10.57+6.96) g=17.53 g

Now, the mass of oxygen in the magnesium oxide is 6.96 thus, the mass percent of oxygen can be calculated as follows:

%mO=mOmMgO×100%

Putting the values,

%mO=6.9617.53×100%=39.70%

Conclusion

Therefore, the mass percent of oxygen is 39.70%.

Chapter 3 Solutions

Chemistry: Matter and Change

Ch. 3.2 - Prob. 11SSCCh. 3.2 - Prob. 12SSCCh. 3.2 - Prob. 13SSCCh. 3.2 - Prob. 14SSCCh. 3.3 - Prob. 15SSCCh. 3.3 - Prob. 16SSCCh. 3.3 - Prob. 17SSCCh. 3.3 - Prob. 18SSCCh. 3.4 - Prob. 19PPCh. 3.4 - Prob. 20PPCh. 3.4 - Prob. 21PPCh. 3.4 - Prob. 22PPCh. 3.4 - Prob. 23PPCh. 3.4 - Prob. 24SSCCh. 3.4 - Prob. 25SSCCh. 3.4 - Prob. 26SSCCh. 3.4 - Prob. 27SSCCh. 3.4 - Prob. 28SSCCh. 3.4 - Prob. 29SSCCh. 3.4 - Prob. 30SSCCh. 3 - Prob. 31ACh. 3 - Prob. 32ACh. 3 - Prob. 33ACh. 3 - Prob. 34ACh. 3 - Prob. 35ACh. 3 - Prob. 36ACh. 3 - Prob. 37ACh. 3 - Prob. 38ACh. 3 - Prob. 39ACh. 3 - Prob. 40ACh. 3 - Prob. 41ACh. 3 - Prob. 42ACh. 3 - Prob. 43ACh. 3 - Prob. 44ACh. 3 - Prob. 45ACh. 3 - List four indicators that a chemical change has...Ch. 3 - Rust Iron and oxygen combine to form iron oxide,...Ch. 3 - Burning Candle After burning for three hours, a...Ch. 3 - Prob. 49ACh. 3 - Ammonia Production A 28.0-g sample of nitrogen gas...Ch. 3 - Prob. 51ACh. 3 - Prob. 52ACh. 3 - Prob. 53ACh. 3 - Prob. 54ACh. 3 - Prob. 55ACh. 3 - Prob. 56ACh. 3 - Prob. 57ACh. 3 - Prob. 58ACh. 3 - Prob. 59ACh. 3 - Which of the following are the same and which are...Ch. 3 - Describe how a homogeneous mixture differs from a...Ch. 3 - Seawater is composed of salt, sand, and water. Is...Ch. 3 - Iced Tea Use iced tea with and without ice cubes...Ch. 3 - Prob. 64ACh. 3 - Prob. 65ACh. 3 - Prob. 66ACh. 3 - Prob. 67ACh. 3 - Prob. 68ACh. 3 - Prob. 69ACh. 3 - Prob. 70ACh. 3 - Prob. 71ACh. 3 - Prob. 72ACh. 3 - Prob. 73ACh. 3 - Prob. 74ACh. 3 - Prob. 75ACh. 3 - Prob. 76ACh. 3 - Prob. 77ACh. 3 - Prob. 78ACh. 3 - Prob. 79ACh. 3 - Prob. 80ACh. 3 - Prob. 81ACh. 3 - Prob. 82ACh. 3 - Prob. 83ACh. 3 - Prob. 84ACh. 3 - Prob. 85ACh. 3 - Prob. 86ACh. 3 - Prob. 87ACh. 3 - Prob. 88ACh. 3 - Prob. 89ACh. 3 - Prob. 90ACh. 3 - Prob. 91ACh. 3 - Prob. 92ACh. 3 - Prob. 93ACh. 3 - Prob. 94ACh. 3 - Prob. 95ACh. 3 - Prob. 96ACh. 3 - Prob. 97ACh. 3 - Prob. 98ACh. 3 - Prob. 99ACh. 3 - Prob. 100ACh. 3 - Prob. 101ACh. 3 - Prob. 102ACh. 3 - Prob. 103ACh. 3 - Prob. 105ACh. 3 - Prob. 106ACh. 3 - Prob. 107ACh. 3 - Prob. 1STPCh. 3 - Prob. 2STPCh. 3 - Prob. 3STPCh. 3 - Prob. 4STPCh. 3 - Prob. 5STPCh. 3 - Prob. 6STPCh. 3 - Prob. 7STPCh. 3 - Prob. 8STPCh. 3 - Prob. 9STPCh. 3 - Prob. 10STPCh. 3 - Prob. 11STPCh. 3 - Prob. 12STPCh. 3 - Prob. 13STPCh. 3 - Prob. 14STPCh. 3 - Prob. 15STPCh. 3 - Prob. 16STPCh. 3 - Prob. 17STPCh. 3 - Prob. 18STPCh. 3 - Prob. 19STP
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