Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
12th Edition
ISBN: 9780357119303
Author: Bettelheim, Frederick A., Brown, William H., Campbell, Mary K., FARRELL, Shawn O., Torres, Omar
Publisher: Cengage Learning
bartleby

Videos

Textbook Question
Book Icon
Chapter 2, Problem 13P

2-20 Calculate the percentage of hydrogen and oxygen in water, H2O, and hydrogen peroxide, H2O2.

Expert Solution & Answer
Check Mark
Interpretation Introduction

Interpretation:

The percentage of hydrogen and oxygen in water, H2O, and hydrogen peroxide, H2O2 should be identified.

Concept Introduction:

The same element combined together to form a chemical compound. The elements present in the compounds are in the fixed proportion by mass.

Answer to Problem 13P

H − 5.88%, O − 94.12% in hydrogen peroxide and H-11.11%, O-88.89% in water.

Explanation of Solution

The percentage of an element in a given compound is calculated using the mass of that element in the compound and the total mass of the compound.

% of an element = mass of the element in the compoundtotal mass of the compound×100

A water molecule (H2 O) consists of two atoms of hydrogen and one atom of oxygen. The mass numbers of hydrogen and oxygen are 1 and 16 respectively.

Therefore, the mass of hydrogen in water is calculated using the mass number of hydrogen atoms in water.

Mass of hydrogen = mass number of hydrogen × 2

                             = 1 × 2                             = 2 

Similarly, the mass of oxygen in water is calculated using the mass number of oxygen and the number of oxygen atoms in water.

Mass of oxygen = mass number of oxygen × 1                         = 16×1                         = 16

Now, the total mass of water is calculated using the mass of hydrogen and the mass of oxygen.

Total mass of water = mass of hydrogen + mass of oxygen.

= 2 + 16.

= 18.

Now the percentage of oxygen and hydrogen in water are calculated as below:

% of hydrogen in water = mass of hydrogentotal mass of water×100                                      = 218×100                                     = 11.11%% of oxygen in water = mass of hydrogen total mass of water×100                                 = 1618×100                                 = 88.89%

So, it contains 11.11% hydrogen and 88.89% oxygen.

A hydrogen peroxide contains two hydrogen and two oxygen atoms. And their masses are 1 and 16 respectively.

So, the total masses of hydrogen and oxygen are as below:

Mass of hydrogen 1×2 = 2

Mass of oxygen 16×2 = 32

And total mass of H2 O2 = 32 + 2 = 34.

Now the calculation of percentage of hydrogen and oxygen in H2 O2

% of hydrogen in H2O2 = mass of hydrogentotal mass of water×100                                      = 234×100                                     = 5.88%% of oxygen in H2O2 = mass of hydrogen total mass of water×100                                 = 3234×100                                 = 94.12%.

Conclusion

H − 5.88%, O − 94.12% in hydrogen peroxide and H-11.11%, O-88.89% in water.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Pleasssssseeee solve this question in cheeemsirty, thankss sir
Show work. Don't give Ai generated solution
Pleasssssseeee solve this question in cheeemsirty, thankss sir

Chapter 2 Solutions

Introduction to General, Organic and Biochemistry

Ch. 2 - Prob. 4PCh. 2 - 2-12 The elements game, Part 1. Name and give the...Ch. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - 2-17 How does Dalton’s atomic theory explain: (a)...Ch. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - 2-20 Calculate the percentage of hydrogen and...Ch. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - 2-23 It has been said, “The number of protons...Ch. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - 2-26 Given these mass numbers and number of...Ch. 2 - If each atom in Problem 19 acquired two more...Ch. 2 - Prob. 21PCh. 2 - 2-29 How many protons and how many neutrons does...Ch. 2 - Prob. 23PCh. 2 - 2-31 Tin-118 is one of the isotopes of tin. Name...Ch. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - 2-34 There are only two naturally occurring...Ch. 2 - 2-35 The two most abundant naturally occurring...Ch. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - 2-43 Which group(s) of the Periodic Table...Ch. 2 - 2-44 Which period(s) in the Periodic Table...Ch. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - 2-47 Which element in each pair is more metallic?...Ch. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - 2-51 What is the correlation between the group...Ch. 2 - Prob. 45PCh. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - Prob. 49PCh. 2 - Prob. 50PCh. 2 - Prob. 51PCh. 2 - 2-59 You are presented with a Lewis dot structure...Ch. 2 - Prob. 53PCh. 2 - Prob. 54PCh. 2 - Prob. 55PCh. 2 - Prob. 56PCh. 2 - 2-64 Consider the elements B, C, and N. Using only...Ch. 2 - Prob. 58PCh. 2 - Prob. 59PCh. 2 - 2-67 Account for the fact that the first...Ch. 2 - Prob. 61PCh. 2 - 2-69 (Chemical Connections 2A) Why does the body...Ch. 2 - Prob. 63PCh. 2 - Prob. 64PCh. 2 - Prob. 65PCh. 2 - 2-73 (Chemical Connections 2D) Copper is a soft...Ch. 2 - Prob. 67PCh. 2 - Prob. 68PCh. 2 - Prob. 69PCh. 2 - Prob. 70PCh. 2 - Prob. 71PCh. 2 - Prob. 72PCh. 2 - Prob. 73PCh. 2 - Prob. 74PCh. 2 - Prob. 75PCh. 2 - 2-83 The natural abundance of boron isotopes is as...Ch. 2 - Prob. 77PCh. 2 - 2-85 The mass of a proton is 1.67 × 10-24g. The...Ch. 2 - Prob. 79PCh. 2 - Prob. 80PCh. 2 - Prob. 81PCh. 2 - Prob. 82PCh. 2 - Prob. 83PCh. 2 - 2-91 These are the first two ionization energy for...Ch. 2 - Prob. 85PCh. 2 - Prob. 86PCh. 2 - 2-94 Using your knowledge of trends in element...Ch. 2 - Prob. 88PCh. 2 - Prob. 89PCh. 2 - 2-97 Explain why the Ca3+ ion is not found in...Ch. 2 - 2-98 Explain how the ionization energy of atoms...Ch. 2 - 2-99 A 7.12 g sample of magnesium is heated with...Ch. 2 - 2-100 A 0.100 g sample of magnesium, when combined...Ch. 2 - 2-101 Complete the following table: Symbol Atomic...Ch. 2 - 2-102 An element consists of 90.51% of an isotope...Ch. 2 - 2-103 The element silver has two naturally...Ch. 2 - 2-104 The average atomic weight of lithium is...Ch. 2 - Prob. 98PCh. 2 - Prob. 99PCh. 2 - Consider the Period 3 elements of the Periodic...Ch. 2 - Name the element that corresponds to each of the...
Knowledge Booster
Background pattern image
Chemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Introduction to General, Organic and Biochemistry
Chemistry
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Cengage Learning
Text book image
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
Periodic Properties of Elements | Chemistry | IIT-JEE | NEET | CBSE | Misostudy; Author: Misostudy;https://www.youtube.com/watch?v=L26rRWz4_AI;License: Standard YouTube License, CC-BY
Periodic Trends: Electronegativity, Ionization Energy, Atomic Radius - TUTOR HOTLINE; Author: Melissa Maribel;https://www.youtube.com/watch?v=0h8q1GIQ-H4;License: Standard YouTube License, CC-BY