Number of results: 99,433
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
Element X and fluorine react to form two different compounds. In the first reaction 0.480g of X reacts with 1.000g of F. In the second, 0.960g of X reacts with 1.000g of F. What are the possible formulas for the two compounds? (Multiple choice) a. XF (for 1st compound) X2F2 (...
Monday, July 25, 2005 at 6:34pm by Paul
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 - Stoichiometry
Elements X and fluorine react to form two different compounds. In the first reaction 0.480g of X reacts with 1.000g of F. In the second, 0.960g of X reacts with 1.000g of F. Which are possible formulas for the two compunds First Compound Second Compound a)XF X2F2 b)XF2 XF c)...
Thursday, August 18, 2005 at 2:20pm by Kevin
human anatomy and physiology
1. name and define in detail the four organic compound groups that make up the chemistry of living things. Lipids, carbohydrates, proteins, and nucleic acids. See Part IV of http://www.ucmp.berkeley.edu/people/brs/biol1a/Lect2.html for specifics
Tuesday, August 23, 2005 at 2:15am by Kristen
When 1.24g of an organic compound with the formula CxHyOz is burned in excess oxygen, 1.76g of carbon dioxide and 1.08g of water vapor are obtained. What is the empirical formula of the compound? Determine the moles of CO2 in 1.76grams, that will give you the moles of C in the...
Tuesday, August 23, 2005 at 6:22pm by kevin
nedd as much help as possible thanks!
What problem arises in trying to predict the type of compound formed by the reaction of gold and selenium? I honsetly have no Idea like Ihave read researched whn I was looking for some help I stumbled across this website and i was hoping you guys could help a brother out ...
Saturday, June 17, 2006 at 4:47pm by beaver!
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
Hi Im reposting incase my original post doesn't get read. Please see bottom for additional info that I need help getting verified. Many thanks Hi Please help verify my answer to the following question: 0.500g of pure phosphorous was burned in excess pure oxygen to give a ...
Sunday, October 16, 2011 at 7:34pm by Helpme
Calculate the osmolarity of a 2.0 × 10-3 M Na3PO4 solution. Na3PO4 is an ionic compound and produces an electrolytic solution.
Saturday, October 29, 2011 at 1:29pm by Chemistry Chick
All of the "Railroad" problems have a give away line. This one has two and you need to know enough chemistry to recognize them when you see them.Let me give you the give away lines and a few hints and let you work on it. A. The give away line is that commercially available ...
Sunday, December 4, 2011 at 7:43pm by DrBob222
A solution was made by dissolving 62.07 grams of a compound in 500.0 g of water. The compound was not ionic. The freezing point of the solution was measured and found to be – 1.86oC. Using the Kf value in your textbook , the molar mass of this compound can be calculated to be ...
Sunday, February 5, 2012 at 6:05pm by Anna King
What is the pH of a 5.06E-2 M aqueous solution of sodium acetate? I know that I would set this up the same way I did for the previous question that I posted. I am just confused on how to find the Ka. I know it is kw/kb but for what compound is what I do not know. Chemistry(...
Sunday, April 8, 2012 at 12:10pm by Hannah
I think that the base always contains hydroxide, aka OH; the original components were water mixed with an ammonium compound ( NH2)Check the chemistry reference tables too, which have tables that identify the bases and acids.
Saturday, May 12, 2012 at 8:13pm by Nancy
You would do well to restrict posts in the future to one problem per post. 1. How many moles of Al(CN)3 are in 199 g of the compound? mol = g/molar mass 2. 96.0 mol of P4O10 contains how many moles of P? mol = g/molar mass 3. If 4.71 moles of C5H12 reacts with excess O2, how ...
Monday, October 8, 2012 at 12:27pm by DrBob222
DrBob222, thank you. Is there any online worksheets related to chemistry 8th edition zumdahl up to chapter 9. The topic include.. -percent composition of compounds and formula for compound like molecular and empirical -balancing equations -limiting reactant -theoretical and ...
Sunday, November 4, 2012 at 4:07pm by zoya
The + ion is simply the name of the metal; e.g. NaCl is sodium ion for the Na^+. For binary compounds (two elements to the compound such as NaCl), the anion takes the stem from the element. Cl is chlor-and add ide. Cl^- is chloride. Br^- is bromide, I^- iodide, etc. Here is a ...
Friday, November 23, 2012 at 10:16pm by DrBob222
I did an experiment today called "removing tarnish". we removed tarnish from a fork wrapped in foil paper. Now i have to answer some questions. please correct me if i answer them wrong. im not the best in chemistry. thanks. 1. describe the odor of the water trapped inside the ...
Thursday, April 11, 2013 at 9:27pm by jontson
The following thermodynamic data was obtained for an unknown compound. Delta Hvap = 31.3 kj/mol and Delta S Vap= 79.7 kj/mol .Calculate the normal boiling point of this compound in Celcius.. Thank you! Chemistry - DrBob222, Tuesday, April 30, 2013 at 12:31am dG = dHvap - ...
Tuesday, April 30, 2013 at 1:25am by Chloe
Not quiet. The all are soluble, then dissociate, and form ions, which float, and mix. If the mix forms a compound which is insoluble... Take a look at the solubility rules for carbonate compounds, I cant think of a group II carbonate that is soluble. http://mrnorton.com/...
Wednesday, May 15, 2013 at 7:37pm by bobpursley