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...
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Can you please help with these problems. Please do it on paper showing work so I can clearly see it and understand it. Thank you so much.
Transcribed Image Text:Empirical Formula Practice Problems
1) A compound is found to have (by mass) 48.38% carbon, 8.12% hydrogen and the rest
oxygen.
What is its empirical formula?
2) A compound is found to have 46.67% nitrogen, 6.70% hydrogen, 19.98% carbon and
26.65% oxygen. What is its empirical formula?
3) A compound is known to have an empirical formula of CH and a molar mass of 78.11
g/mol. What is its molecular formula?
4) Another compound, also with an empirical formula if CH is found to have a molar
mass of 26.04 g/mol. What is its molecular formula?
5) A compound is found to have 1.121 g nitrogen, 0.161 g hydrogen, 0.480 g carbon and
0.640 g oxygen. What is its empirical formulal (Note that masses are given, NOT
percentages.)
6) A compound containing only carbon, hydrogen and oxygen is found to be 48.38%
carbon and 8.12% hydrogen by mass. What is its empirical formula?
Cip
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