Previous in Forum: Do Electromagnet Frequencies Exhibit Characteristics of a Magnet?   Next in Forum: Something Old, Mixed with Something New
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
12 comments
Rate Comments: Nested
mammy
Participant

Join Date: Jul 2010
Posts: 1

Pharmaceutical Aerosols

07/30/2010 3:08 PM

Hi,

I have this calculation which I can not do.

Given that Propellant A = 40%w/w, Propellant B = 60%w/w, calculate:

a. the amount of each

b. mole fraction of each.
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Pharmaceutical Aerosols

07/30/2010 3:19 PM

mammy,

You'd better ask yo pappy. We don't do homework here.

6.023x1023
Register to Reply
sue
Guru
Technical Fields - Technical Writing - New Member

Join Date: Feb 2006
Location: Near Delaware Water Gap
Posts: 1324
Good Answers: 83
#2
In reply to #1

Re: Pharmaceutical Aerosols

07/30/2010 3:25 PM

Aaak! I hate those things.
Register to Reply Off Topic (Score 5)
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#3
In reply to #2

Re: Pharmaceutical Aerosols

07/30/2010 3:36 PM

Maybe you're not cooking them thoroughly. You do skin them first, don't you?
Register to Reply Off Topic (Score 5)
sue
Guru
Technical Fields - Technical Writing - New Member

Join Date: Feb 2006
Location: Near Delaware Water Gap
Posts: 1324
Good Answers: 83
#4
In reply to #3

Re: Pharmaceutical Aerosols

07/30/2010 4:03 PM

Wait....you're supposed to cook them before eating?!
Register to Reply Off Topic (Score 5)
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#6
In reply to #4

Re: Pharmaceutical Aerosols

07/30/2010 4:09 PM
Register to Reply Off Topic (Score 5)
Doorman
Guru
Hobbies - DIY Welding - Don't Know What Made The Old Title Attractive... Popular Science - Weaponology - New Member United States - US - Statue of Liberty - 60 Year Member

Join Date: Apr 2009
Location: Yellowstone Valley, in Big Sky Country
Posts: 7425
Good Answers: 295
#5
In reply to #3

Re: Pharmaceutical Aerosols

07/30/2010 4:09 PM

Wait....you're supposed to skin them before eating?!

Huh. That would explain a few things....

__________________
 Semper Ubi Sub Ubi
Register to Reply Off Topic (Score 5)
sue
Guru
Technical Fields - Technical Writing - New Member

Join Date: Feb 2006
Location: Near Delaware Water Gap
Posts: 1324
Good Answers: 83
#7
In reply to #5

Re: Pharmaceutical Moles

07/30/2010 4:16 PM

Might not need to skin this one.
Register to Reply Off Topic (Score 5)
DVader1000
Guru
Engineering Fields - Environmental Engineering - New Member APIX Pilot Plant Design Project - Member - New Member

Join Date: May 2007
Location: Anywhere Emperor Palpatine assigns me
Posts: 2774
Good Answers: 101
#8

Re: Pharmaceutical Aerosols

07/31/2010 12:52 AM

Hi,

I have this question that I can not answer.

Given that Propellant A = 40%w/w, Propellant B = 60%w/w:

a. volume of each not given

b. density & formula of each not given.

Are you daft or something? Without the above required data the information given is already the answer!!!!

Now go read your textbook carefully and work out the answer yourself!!!!

__________________
 If only you knew the power of the Dark Side of the Force
Register to Reply
CaptMoosie
Guru
Hobbies - DIY Welding - New Member Hobbies - Target Shooting - New Member Engineering Fields - Civil Engineering - New Member United States - Member - New Member

Join Date: May 2009
Location: Red Hook, New York (Mid-Hudson River Valley)
Posts: 4362
Good Answers: 179
#9

Re: Pharmaceutical Aerosols

07/31/2010 8:39 AM

Just you try and stuff one of 'em Moles into a TEST TUBE! LOL

__________________
 "Veni, Vidi, Vici"; hendiatris attributed to Gaius Julius Caesar, 47 B.C.
Register to Reply
Unredundant
Guru

Join Date: Feb 2008
Location: Large hole formally occupied by furry woodland creature.
Posts: 3385
Good Answers: 97
#10

Re: Pharmaceutical Aerosols

07/31/2010 9:41 AM

There was an old Mammy who lived in a shoe.

She had a calculation that she could not do.

There there old Mammy, don't feel blue.

Ask CR4 to do the work for you!

It is with regret that I inform, that this OP succumbed to an accidental overdose from a poorly formulated pharmaceutical aerosol.

__________________
 CRTL-Z
Register to Reply
Anonymous Poster
#11

Re: Pharmaceutical Aerosols

07/31/2010 11:38 PM

Of course you can't do the calculation!

You would need to invoke strong magic to devine either the amount of each propellant or the mole fraction of each, with only the information given. I assume you are at Hogwarts, and need to brush up on your dark arts. Better get busy!
Register to Reply
phoenix911
Guru
Hobbies - CNC - New Member Hobbies - DIY Welding - New Member Engineering Fields - Electromechanical Engineering - New Member

Join Date: Aug 2007
Posts: 23647
Good Answers: 420
#12

Re: Pharmaceutical Aerosols

08/03/2010 10:20 AM

that sounds like a question from a pe exam

__________________
 “ When people get what they want, they are often surprised when they get what they deserve " - James Wood
Register to Reply
Register to Reply
Have a Different Question?
12 comments
Copy to Clipboard

Users who posted comments:

Anonymous Poster (1); CaptMoosie (1); Doorman (1); DVader1000 (1); lyn (3); phoenix911 (1); sue (3); Unredundant (1)

Previous in Forum: Do Electromagnet Frequencies Exhibit Characteristics of a Magnet?   Next in Forum: Something Old, Mixed with Something New

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
General Discussion:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (91 right now)
Show Members
Advertisement