|
|
|
CHEM 234 Assignment 1.docx
CHEM_234_Assignment_1.docx
Showing 1 out of 1
CHEM 234 Assignment 1.docx-CHEM 234 - Fall 2014 As...
CHEM_234_Assignment_1.docx-CHEM 234 - Fall 2014 Assignment
CHEM 234 Assignment 1.docx-CHEM 234...
CHEM_234_Assignment_1.docx-CHEM 234 - Fall 2014 Assignment
Page 1
CHEM 234
- Fall 2014
Assignment #1 (5 points)
Due date: September 18th, 2014
Question 1: (1 point)
The mass of air in our classroom was evaluated to be around
450 kg, when estimating
that air is composed of 79% nitrogen (N
2
) and 21% oxygen (O
2
). What difference in mass
could you calculate, if any, if air had been estimated to be composed of 100% nitrogen,
instead of 79% N
2
and 21% O
2
?
Question 2: (1 point)
In an industrial process, nitrogen has to be heated to 500 K at a constant volume of
1.000m
3
. The gas enters the container at 300 K and 100 atm. The mass of the gas is 92.4
kg. Use the van der Waals equation to determine the approximate pressure of the gas at
its working temperature of
500 K. For nitrogen, a = 1.352 dm
6
atm mol
-2
, and b= 0.0387
dm
3
mol
-1
.
Question 3 :
(1 point)
Calculate the work needed for a bird of mass 135 g to fly to a height of 60 m from the
surface of the Earth.
Question 4: (2 points)
A sample consisting of 1.0 mol of solid calcium carbonate (CaCO
3
) was heated to 800°C,
when it decomposed. The heating was carried out in a container fitted with a piston that
was initially resting on the solid. Calculate the work done during the complete
decomposition of the sample at 1.0 atm. What work would be done if instead of having a
piston, the container was open to the atmosphere?
Ace your assessments! Get Better Grades
Browse thousands of Study Materials & Solutions from your Favorite Schools
Concordia University
Concordia_University
School:
Physical_Chemistry_I
Course:
Before using StudyPaq my grade was at 78%. By the end of the semester my grade was at 90%. I could not have done it without all the class material I found.
Steven Paul Jobs
Agustus University
Students also viewed documents
lab 18.docx
lab_18.docx
Course
Course
3
Module5QuizSTA2023.d...
Module5QuizSTA2023.docx.docx
Course
Course
10
Week 7 Test Math302....
Week_7_Test_Math302.docx.docx
Course
Course
30
Chapter 1 Assigment ...
Chapter_1_Assigment_Questions.docx.docx
Course
Course
5
Week 4 tests.docx.do...
Week_4_tests.docx.docx
Course
Course
23
Week 6 tests.docx.do...
Week_6_tests.docx.docx
Course
Course
106
Trending Courses
Related Documents
ece202 fn su2009 sol.pdf
ece202_fn_su2009_sol.pdf
Purdue University-...
Purdue University-Main Campus
ece202 fn sp2010 sol.pdf
ece202_fn_sp2010_sol.pdf
Purdue University-...
Purdue University-Main Campus
ece202 fn sp2011 sol.pdf
ece202_fn_sp2011_sol.pdf
Purdue University-...
Purdue University-Main Campus
ece202 fn sp2014 sol.pdf
ece202_fn_sp2014_sol.pdf
Purdue University-...
Purdue University-Main Campus
ece202 fn su2012 ans.pdf
ece202_fn_su2012_ans.pdf
Purdue University-...
Purdue University-Main Campus
ece202 fn fa2012 ans.pdf
ece202_fn_fa2012_ans.pdf
Purdue University-...
Purdue University-Main Campus
ece202 fn sp2013 sol.pdf
ece202_fn_sp2013_sol.pdf
Purdue University-...
Purdue University-Main Campus
ece202 fn su2013 ans.pdf
ece202_fn_su2013_ans.pdf
Purdue University-...
Purdue University-Main Campus