A solution of pentane and ethanol (CH CH,OH) is boiling at 77.1 °C. A sample of the vapor above the solution is cooled until it condenses. This condensed sample is analyzed, and turns out to be 10.% pentane by mass. Calculate the percent by mass of pentane in the boiling solution. Here's some data you may need: normal vapor pressure density boiling point at 77.1 °C 36. °C pentane 0.63 mL 2451. torr 18 Ar ethanol 78. °C 0.79 mL 725. torr Be sure your answer has 2 significant digits. Note for advanced students: you may assume the solution and vapor above it are ideal. % x10 Explanation Check 2019 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy Lenovo oox X Esc X Home Insert End Delete FnLock F2 F1 F3 F4 F5 F6 F8 F7 F9 F10 F11 F12 ! & Backspac 1 4 2 3 7 R Q T P Tab F G JK A S H D apsLock +1I CO CO LO Calculate the percent by mass of pentane in the boiling solution. Here's some dat vapor pressure normal density boiling point at 77.1 °C g 0.63 mL 36. °C pentane 2451. torr ethanol 78. °C 0.79 mL 725. torr Be sure your answer has 2 significant digits. Note for advanced students: you may assume the solution and vapor above it are ide x10 Explanation Check
A solution of pentane and ethanol (CH CH,OH) is boiling at 77.1 °C. A sample of the vapor above the solution is cooled until it condenses. This condensed sample is analyzed, and turns out to be 10.% pentane by mass. Calculate the percent by mass of pentane in the boiling solution. Here's some data you may need: normal vapor pressure density boiling point at 77.1 °C 36. °C pentane 0.63 mL 2451. torr 18 Ar ethanol 78. °C 0.79 mL 725. torr Be sure your answer has 2 significant digits. Note for advanced students: you may assume the solution and vapor above it are ideal. % x10 Explanation Check 2019 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy Lenovo oox X Esc X Home Insert End Delete FnLock F2 F1 F3 F4 F5 F6 F8 F7 F9 F10 F11 F12 ! & Backspac 1 4 2 3 7 R Q T P Tab F G JK A S H D apsLock +1I CO CO LO Calculate the percent by mass of pentane in the boiling solution. Here's some dat vapor pressure normal density boiling point at 77.1 °C g 0.63 mL 36. °C pentane 2451. torr ethanol 78. °C 0.79 mL 725. torr Be sure your answer has 2 significant digits. Note for advanced students: you may assume the solution and vapor above it are ide x10 Explanation Check
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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Calculate the percent by mass of pentane in the boiling solution here some day you may need in the picture round your answer to two significant digits
Transcribed Image Text:A solution of pentane and ethanol (CH CH,OH) is boiling at 77.1 °C. A sample of the vapor above the solution is cooled until it condenses. This condensed
sample is analyzed, and turns out to be 10.% pentane by mass.
Calculate the percent by mass of pentane in the boiling solution. Here's some data you may need:
normal
vapor pressure
density
boiling point
at 77.1 °C
36. °C
pentane
0.63
mL
2451. torr
18
Ar
ethanol
78. °C
0.79
mL
725. torr
Be sure your answer has 2 significant digits.
Note for advanced students: you may assume the solution and vapor above it are ideal.
%
x10
Explanation
Check
2019 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy
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oox X
Esc
X
Home
Insert
End
Delete
FnLock
F2
F1
F3
F4
F5
F6
F8
F7
F9
F10
F11
F12
!
&
Backspac
1
4
2
3
7
R
Q
T
P
Tab
F G
JK
A
S
H
D
apsLock
+1I
CO
CO
LO
Transcribed Image Text:Calculate the percent by mass of pentane in the boiling solution. Here's some dat
vapor pressure
normal
density
boiling point
at 77.1 °C
g
0.63
mL
36. °C
pentane
2451. torr
ethanol
78. °C
0.79
mL
725. torr
Be sure your answer has 2 significant digits.
Note for advanced students: you may assume the solution and vapor above it are ide
x10
Explanation
Check
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