Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter11: Stoichiometry
Section: Chapter Questions
Problem 115A
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![QUESTION 18
An analysis of a compound is performed. Percent by mass is
C 40.0% H 6.7% O 53.3%
The empirical formula of the compound is
O A. CH20
B. CHO2
C.C2HO
D. C2HO2
O E. CAHO3
QUESTION 19
_C2H4 +_ 02 = _CO2+_H2o
%3D
When the above equation is correctly balanced, the sum of the coefficients is
O A.8 OB.5 OC7 OD 6](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4cba86e6-7d11-4ab8-8454-fedeeb28a7c8%2F91242915-158f-499d-b96b-253624f77ee3%2Ffhrrkr7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:QUESTION 18
An analysis of a compound is performed. Percent by mass is
C 40.0% H 6.7% O 53.3%
The empirical formula of the compound is
O A. CH20
B. CHO2
C.C2HO
D. C2HO2
O E. CAHO3
QUESTION 19
_C2H4 +_ 02 = _CO2+_H2o
%3D
When the above equation is correctly balanced, the sum of the coefficients is
O A.8 OB.5 OC7 OD 6
![QUESTION 20
When an aluminum atom forms an Al3* ion, the atom
O A. gains three protons
O B. gains two electrons and loses one proton
O C. loses three electrons
O D. gains three electrons
O E loses three protons](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4cba86e6-7d11-4ab8-8454-fedeeb28a7c8%2F91242915-158f-499d-b96b-253624f77ee3%2F9xgsctke_processed.jpeg&w=3840&q=75)
Transcribed Image Text:QUESTION 20
When an aluminum atom forms an Al3* ion, the atom
O A. gains three protons
O B. gains two electrons and loses one proton
O C. loses three electrons
O D. gains three electrons
O E loses three protons
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