TEST YOURSELF A 6.234-mg sample produced 12.123 mg CO. and 2.529 mg of H-O. Find the wt of C and H in the sample AnSwer: 53.07.454

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
icon
Related questions
Question
Pro DC
niel C. Harris - Q.. x
100%
Signatu
EXAMPLE
Combustion Analysis Calculations
A compound weighing 5.714 mg produced 14.414 mg of CO, and 2.529 mg of H,O upon
combustion. Find the wt% of C and H in the sample.
Solution One mole of CO, contains 1 mol of carbon. Therefore,
Moles of C in sample
moles of CO, produced
gto,
14.414 X 10-3
4
3.275 X 10
mol
44.009 g/mol CO,
Mass of C in sample
(3.275 X 10 mol C)(12.010 6 g/mol C)
= 3.934 mg
3.934 mg C
wt% C =
x 100 = 68.84%
5.714 mg sample
One mole of H,O contains 2 mol of H. Therefore.
Moles of H in sample 2(moles of H,0 produced)
g HO
18.015 g/mol HO
2.529 x 10
- 2.808 × 10mol
Mass of H in sample = (2.808 × 10 "mol H1.008 g/mol H) = 2.830 x 10
0.283 0 mg H
wt% H =
x 100-495%
5.714 mg sample
TEST YOURSELF A 6.234-mg sample produced 12.123 mg Co, and 2.529 mg of H.O
Find the wt of C and H in the sample ARwer: 5307.4.54
Transcribed Image Text:Pro DC niel C. Harris - Q.. x 100% Signatu EXAMPLE Combustion Analysis Calculations A compound weighing 5.714 mg produced 14.414 mg of CO, and 2.529 mg of H,O upon combustion. Find the wt% of C and H in the sample. Solution One mole of CO, contains 1 mol of carbon. Therefore, Moles of C in sample moles of CO, produced gto, 14.414 X 10-3 4 3.275 X 10 mol 44.009 g/mol CO, Mass of C in sample (3.275 X 10 mol C)(12.010 6 g/mol C) = 3.934 mg 3.934 mg C wt% C = x 100 = 68.84% 5.714 mg sample One mole of H,O contains 2 mol of H. Therefore. Moles of H in sample 2(moles of H,0 produced) g HO 18.015 g/mol HO 2.529 x 10 - 2.808 × 10mol Mass of H in sample = (2.808 × 10 "mol H1.008 g/mol H) = 2.830 x 10 0.283 0 mg H wt% H = x 100-495% 5.714 mg sample TEST YOURSELF A 6.234-mg sample produced 12.123 mg Co, and 2.529 mg of H.O Find the wt of C and H in the sample ARwer: 5307.4.54
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Precipitation Titrations
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
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY