- How many moles of vapor are there in a sample that completely fills a 125-mL flask at . 85.5°C and 763 torr? n 21

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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9
Prelaboratory
Name
Mass of a
Volatile Liquid
Questions
Mari Coronel
Laboratory Section.
Show your work, include units, and report the correct number of significant figures for all
calculations.
1. How many moles of vapor are there in a sample that completely fills a 125-mL flask at
85.5°C and 763 torr?
n=pr
QF
85.5°C
с 358, 65к
763 forr = 1.004 atm
=
125 ml
125 002
N = pr
n = (1.004 atm) (125002)
358.65K
n = 34.9 moles of Vapor
(continued on next page)
77
Transcribed Image Text:9 Prelaboratory Name Mass of a Volatile Liquid Questions Mari Coronel Laboratory Section. Show your work, include units, and report the correct number of significant figures for all calculations. 1. How many moles of vapor are there in a sample that completely fills a 125-mL flask at 85.5°C and 763 torr? n=pr QF 85.5°C с 358, 65к 763 forr = 1.004 atm = 125 ml 125 002 N = pr n = (1.004 atm) (125002) 358.65K n = 34.9 moles of Vapor (continued on next page) 77
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