Number of results: 98,187
Chemistry Suspension Examples...
I need 10 examples of household suspensions for science class tomorrow. I got 10 solutions, 10 colloids, and 10 solvents...but can't figure out 10 suspensions! Help! http://www.elmhurst.edu/~chm/vchembook/106Amixture.html Suspensions have much larger particles: usually over ...
Wednesday, June 15, 2005 at 7:34am by Nat
Describe the differance between chemistry and chemical technology. Technology is the making of applications. Chemical technology...making chemicals for practical or commercial purposes. Chemistry...the study of materials, their reactions
Tuesday, August 16, 2005 at 4:41pm by Jane
chemistry help!!! (clueless)
1. Consider the conductance meter and the titration method of determining the salt content of a brine sample. Discuss at least two advantages and two disadvantages of each method. 2. A corrosion technologist pipetted a 50.00 mL sample of an unknown brine and titrated it with ...
Monday, June 19, 2006 at 5:26pm by lightning
chemistry placement exam
has anyone taken a chemistry placement exam prior to their 1st year of college? what's it like? look up chemistry placement exam on yaahoo and there are a whole lot of websites that talk about what you are asking! hope this helps! You might browse these rays: http://www.google...
Wednesday, June 21, 2006 at 5:35pm by Hawk
I have two Chemistry related questions that were in my AP Chem summer packet. The first has to do with Stoichiometry. It says, "Calculate the number of moles, molecules, and atoms in 60.0 g of boron triflouride. I calculated that there are .885 moles, and 5.33 x 10^23 ...
Monday, August 28, 2006 at 6:50pm by kelly
I need help with a question about chemistry!!!!!!!!!!! I know that motor oil comes in various grades but is it a homogeneous mixture or a compound? Motor oil, as used for lubrication in cars and other such devices, is a homogeneous mixture. It is mostly oil but it has ...
Saturday, September 9, 2006 at 7:03pm by John
Chemistry labs in highschool
First of all, I think freshman chemistry class without a lab deprives the student of what chemistry is all about. I learned as much from the labs as I did from lectures and in some cases I learned more. I will go further than Bob Pursley and say I'm not a fan of AP chemistry ...
Thursday, August 23, 2007 at 12:02am by DrBob222
Chemistry Suspension Examples...]
Monday, September 8, 2008 at 11:36pm by Chemistry Suspension Examples...]
Chemistry Suspension Examples...
Tuesday, September 9, 2008 at 2:47am by Chemistry Suspension Examples...
I'm a beginner in the subject. It's a category that is overviewed in my AP Chem class. I need some help understanding the following: dimethyl-n-butylmethane diethylmethylmethane diethyldimethylmethane trimethylisobutylmethane diethylisopropylmethane dimethylisopropylmethane...
Tuesday, September 9, 2008 at 4:24pm by Angela
At what initial concentration would a solution of acetic acid (ka=1.8x10^-5) be 2% ionized? Thanks Responses Chemistry - DrBob222, Thursday, February 12, 2009 at 10:00pm Let's call acetic acid HAc. Then the ionization is HAc ==> H^+ + Ac^- We will call the initial concn of ...
Thursday, February 12, 2009 at 11:15pm by Chemistry - Repost for DrBob222
Are you new to this site? I doubt you will get many takers to help on an 18 question post. My suggestions: 1. Divide the biology questions and chemistry questions. 2. One question per post. 3. Give a try at explaining what you don't understand; try an answer and explain why ...
Wednesday, February 10, 2010 at 10:23am by DrBob222
c is the correct answer. H2C2O4 is oxalic acid and although it is a weak acid (both k1 and k2 are small) it does increase the H^+ concn in the solution and that will dissolve more CaCO3 just as any acid will. Technically, KNO3 will make it more soluble also because it will ...
Friday, March 5, 2010 at 8:31pm by DrBob222
you can also order the UPCO's Physical Setting CHEMISTRY... it has many helpful equations and it will make it easier to study and understand evrything... plus the book is cheap too.
Monday, March 29, 2010 at 4:38pm by chemistry challenged
Mathematically it makes sense and I think almost any chemist would know what you were doing. I don't know that there is a specific rule against it but I strongly suspect that some profs would not allow it. The most important point I can make, however, is that the parentheses ...
Saturday, July 3, 2010 at 8:22pm by DrBob222
This is what it says on his website. Look at the posts from 06/28/10 to 07/07/10, but specifically look at 07/07/10. Our test that we took was our midterm. Sorry to keep bothering you. I just want to prove that I am not taking a take home exam...
Wednesday, July 7, 2010 at 11:53pm by G
PLZ look at Chemistry Questions!!!
No chemistry questions are getting answered =(
Monday, December 6, 2010 at 4:29pm by Chemistry!
We know that all matter are made up of atoms and all atoms consists of electrons ,protons, neutrons ,etc.Then why do we find such a variety of matter?Why is wood not gold?
Friday, August 5, 2011 at 9:18am by ...
Why such a variety? Because of the large number of ways (currently about 115 or so elements) that electrons, protons, and neutrons come together to make elements AND the almost endless variety of ways elements come together to form compounds. Second question. Gold is gold ...
Friday, August 5, 2011 at 9:18am by DrBob222
Since pressure is measured in force/area, and they have only given you two data, there's not much doubt as to what calculation to make: p = 145lb/300cm^2 = 29/60 lb/cm^2 Now, two questions for you: 1. How is this chemistry? 2. What scientist mixes English and metric units?
Friday, June 15, 2012 at 3:26pm by Steve