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Materials & Chemical Engineering

- Properties of matter and its applications. Metal Production, Fabrication, Distillation, Corrosion
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Jan16-12 Greg Bernhardt
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:01 PM
chemisttree
0 30,427
Hello, If I have a shaft that has a section area of .0562 in. sq. and a material yield strength of 60KSI. And I...
Oct25-13 11:49 AM
nvn
12 1,946
So when osmosis between two solutions (separated by a semipermeable membrane),takes place, the solvent travels from...
Oct21-13 11:34 AM
Urmi Roy
4 1,216
Where can i get the theoretical value of MFI for common polymeric materials such as PP, PE, PS, PMMA...as reference?
Oct20-13 04:07 PM
Alkim
1 1,132
I have been looking for hours tring to find a material with these properties. Working Temperature up to 500 F Low...
Oct20-13 03:38 PM
Alkim
3 2,461
Read this quote on a major recycler's website: "During this processing, we separate ferrous materials from...
Oct19-13 12:51 PM
rollingstein
4 3,581
Hello, In my class we were talking about the design of an ammonia reactor, and there is a battle between arrhenius...
Oct18-13 03:37 PM
Borek
1 1,185
I'm doing an essay on imobilized enzymes. I need to evaluate some data i collected, to do that i need a graph that can...
Oct17-13 07:01 PM
gpmattos
0 1,409
I knew ice was slippery, but looking at a table of coefficents of friction today it seems that ice on ice yields a...
Oct17-13 12:59 PM
SongDog
3 2,174
This is more a thought experiment that I'm not completely sure I'm getting correctly... So here we go: Imagine we...
Oct16-13 04:36 AM
DrClaude
1 2,310
Can someone help me regarding a concept in gun mechanism?? In the current mechanism a part of the chemical energy of...
Oct15-13 01:40 PM
blkexp98
15 10,973
I need a recommendations on a glue to stick aluminium foil. Due to the size I need a product that can be brought in...
Oct14-13 11:25 AM
Notinuse
5 5,219
Hello, I am wondering conceptually why the maximum conversion of products is made at chemical equilibrium? I was...
Oct13-13 09:31 PM
UltrafastPED
3 2,333
I have to use this specific heat value to calculate the heat load for designing a machine as refrigerator. Could you...
Oct13-13 09:30 AM
Prin
4 1,876
Hey. I really want to know if it is possible in some way, to remove the fog created by a smoke machine. The fog...
Oct12-13 02:43 AM
Alkim
3 3,158
and if they are, to what extent?
Oct11-13 03:20 PM
Alkim
8 4,378
Hello, Suppose I have a primitive cubic cell with 8 atoms, one on each corner of the cube. I don't understand how...
Oct11-13 02:32 PM
Alkim
1 1,728
I want to build a box that is warmed by sunlight. I was told that aluminum in the sun is much cooler than bare...
Oct11-13 02:21 PM
Alkim
1 1,314
I have the XRD image of a PZT thin film. While trying to analyze it with JADE software I can not find the proper...
Oct11-13 11:47 AM
phyzguy
2 2,435
Can someone provide me with a general understanding of the steps involved in completing this problem. How do I get...
Oct10-13 11:10 AM
berkeman
1 1,403
Hello, I am curious as to what the purpose of the dimples in a condenser is for? Here is an accompanying photo to...
Oct9-13 10:34 PM
SteamKing
1 1,348
Hey guys. I've been cracking whole day over this question to no avail. I mean I have no idea if it's correct or wrong....
Oct9-13 10:02 AM
Chestermiller
1 4,126
I'm a materials student, doing a bigger project on high temperature polymers (mostly polyimide). Right now I'm...
Oct5-13 12:30 AM
Simon Bridge
1 2,831
I am looking for information on the material, grade and method of manufacture of two ramshorn hooks (each rated at 925...
Oct3-13 01:47 PM
SteamKing
2 2,341
For example a phone in a case is dropped, would it suffer more in a plastic case or a rubber case? Thanks
Oct2-13 09:12 PM
SteamKing
3 2,468
Hello, I was wondering if it is allowed when doing problems on multiple unit mass balances to switch the basis made...
Sep28-13 10:13 AM
rollingstein
1 2,430
Hi folks, I was interested in developing a tiny co2 cartridge and wanted to ask a few questions of anyone who...
Sep25-13 01:45 AM
chrisdarroch
12 4,420
Suppose I am putting a compound A in a reactor where the reaction A → B is occuring. If the concentration of A coming...
Sep22-13 10:14 PM
Chestermiller
1 1,243
I am not certain how write U(h,s). I know that ∂u = T*∂s - P*∂v, but how to I substitute an enthalpy expression in...
Sep21-13 03:54 PM
afpskierx
0 1,206
Hello, I just finished my lower division chemistry/physics sequence, and next semester I am transferring and will...
Sep21-13 05:24 AM
musk
10 3,492
What is mean by advanced materials science and engineering
Sep21-13 05:19 AM
musk
7 2,751
Dear all, I would like to simulate a HID lamp. This lamp is operated at a pressure of 2.8 atm and has a core...
Sep20-13 02:59 AM
juelles
0 1,139
I would like to identify a mysteriously dense metal I have in my possession. I bought a big box of engineering bits,...
Sep18-13 09:56 AM
alan-c
6 1,605
I was trying to emulate a packed bed reactor, and apparently the pressure midway at the packed column became zero,...
Sep18-13 06:21 AM
maistral
9 2,167
PTFE (teflon) is used as a lubricant and for related properties. When sprayed abudantly it leaves a white coating...
Sep17-13 09:52 PM
syntotic
0 1,311
Hello, I was wondering, is it the case that a CSTR is an open system because there is flow passing in and out of...
Sep16-13 08:08 PM
Chestermiller
1 1,587
Hi there We are two students that are looking for a specific plastic material for our project. We need to print...
Sep12-13 05:47 AM
zezinz
0 1,904
Refer to the attached drawing for more details . In this distillation column acetone is to be separated from a...
Sep11-13 11:16 PM
pradeepbarola
0 1,546
I've posted questions on other forums asking people why they became engineers, and the majority of people claimed they...
Sep11-13 08:49 PM
czelaya
8 2,223
Hello, My professor did a lecture about mass conservation in a system. He basically explained the lining that...
Sep10-13 07:08 PM
Chestermiller
3 1,451
I'm not sure I fully understand the difference between thermal conductivity and thermal diffusivity as thermal...
Sep8-13 07:15 PM
AlephZero
1 2,298

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