🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Chemistry
1
answer
0
watching
124
views

A 5 mL sample of an unknown liquid is placed into a 250 mL flask that has had all of the air removed. The pressure measured in the flask is found to be 40.5kPa. In a seperate trial the student puts 214 mL of the same liquid into the same flask at the same conditions. What will the pressure measure (in kPa) in the second trial?

Watch
1
answer
0
watching
124
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Avatar image
Read by 1 person

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
discord banner image
Join us on Discord
Chemistry Study Group
Join now

Related textbook solutions

Basic Chemistry
5 Edition,
Timberlake
ISBN: 9780134138046
Principles of Chemistry Molecular Approach
4th Edition,
Tro
ISBN: 9780134112831
Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944
Chemistry: Structure and Properties
2nd Edition,
Tro
ISBN: 9780134293936
Chemistry: A Molecular Approach
3rd Edition,
Tro
ISBN: 9780321809247
Chemistry: A Molecular Approach
5th Edition,
Tro
ISBN: 9780134874371
Principles of Chemistry: A Molecular Approach
4th Edition,
Tro
ISBN: 9780134895741
Chemistry: The Central Science
14th Edition, 2017
Brown
ISBN: 9780134414232

Related questions

Question 1/3 I need help on

A student observes that a 126 mL dry flask with a foil capweighs 50.162g. The student then adds 5 mL of an unknown volatileliquid and heats the flask in a boiling water bath at 99.2C(degrees) until all liquid disappears. The flask, foil, andunknown after heating that is dry and cool weigh 50.610 g. Thebarometric pressure in the laboratory is 743.3 mm Hg; thelaboratory temperature averages 22.3 C(degrees); the vapor pressureof the unknown liquid is 160 mmHg at 20 C(degrees), and the densityof dry air at STP is 1.2929 g/L. a) What are the experimental conditions of T and P thatwill be used to calculated the mass of air in the flask? the answer for this is pressure: 743.3mmHg and Temperature is 22.3 degree C b) Calculate the density of air at the experimentalconditiosn identified in part a. Answer: 1.17g/L c) Calculate the mass of air in the flask before the liquid was added. 0.147g d) Calculate the partial pressure of air in the flaskafter the liquid was heated and then cooled. 583.3 mmHg e) Calculate the mass of air in the flask after the liquidwas heated and then cooled. 0.120g f) Calculate the mass of air lost. 0.027g HELP g) Calculate the mass of liquid, vapor and air in theflask before you correct for air lost. h) Calculated the mass of liquid, vapor and air in theflask after you correct for air lost. i) Calculated the molecular weight of the unknown liquid

A student observes that a 126 mL dry flask with a foil capweighs 50.162g. The student then adds 5 mL of an unknown volatileliquid and heats the flask in a boiling water bath at 99.2C(degrees) until all liquid disappears. The flask, foil, andunknown after heating that is dry and cool weigh 50.610 g. Thebarometric pressure in the laboratory is 743.3 mm Hg; thelaboratory temperature averages 22.3 C(degrees); the vapor pressureof the unknown liquid is 160 mmHg at 20 C(degrees), and the densityof dry air at STP is 1.2929 g/L.

a) What are the experimental conditions of T and P thatwill be used to calculated the mass of air in the flask?

the answer for this is pressure: 743.3mmHg and Temperature is 22.3 degree C

b) Calculate the density of air at the experimentalconditiosn identified in part a.

Answer: 1.17g/L

c) Calculate the mass of air in the flask before the liquid was added.

0.147g

d) Calculate the partial pressure of air in the flaskafter the liquid was heated and then cooled.

583.3 mmHg

e) Calculate the mass of air in the flask after the liquidwas heated and then cooled.

0.120g

f) Calculate the mass of air lost.

0.027g


HELP


g) Calculate the mass of liquid, vapor and air in theflask before you correct for air lost.

h) Calculated the mass of liquid, vapor and air in theflask after you correct for air lost.

i) Calculated the molecular weight of the unknownliquid.


HELP

Weekly leaderboard

Home
Homework Help 3,900,000
Chemistry 830,000
Start filling in the gaps now
Log in