Number of results: 97,374
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
which of the following is not highly ionic? BeO, BaO, CaO, SrO, MgO BeO has the least ionic character of those listed.
Tuesday, April 24, 2007 at 8:48pm by Robert R.
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...
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
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
The equation for synthesis of the poisonous gas COCl2 is CO(g) + Cl2(g)COCl2 If 43.2 kJ of energy is evolved when 39.5 g of COCl2 is synthesized, what is the molar enthalpy for this synthesis? THANK YOU!
Tuesday, November 2, 2010 at 5:24pm by Melissa
YOu have to figure the molar mass of COCl2 then molarenthalpy=43.2Kj* 39.2/molmass
Tuesday, November 2, 2010 at 5:24pm by bobpursley
PLZ look at Chemistry Questions!!!
No chemistry questions are getting answered =(
Monday, December 6, 2010 at 4:29pm by Chemistry!
We did an experiment and I don't really know how to calculate this question. If you could show me how to do one, then I could do the rest. INFORMATION: HCl = 0.1404 M We placed 0.5 g Ca(OH)2 in 100 mL of the following solutions: Flask A: Distilled Water (8.5 mL of HCl needed ...
Monday, March 26, 2012 at 8:47pm by Myles
Place charges and electron dots as needed on each ion. As Se Br K Ca Ga. I answered: As3+ Se2- Br- K+ Ca2+ Ga2+ but i got it wrong so please helppp!!!
Sunday, October 7, 2012 at 1:23pm by joane
I don't understand the question. As can have +3 or +5. The others are ok EXCEPT Ga should be +3. I don't get the dots part. That may mean for Br^- you do it this way. .. - :Br: .. Se would follow a similar pattern. Ca and K are ok as is. Ga would be change to +3. K is ok as is.
Sunday, October 7, 2012 at 1:23pm by DrBob222
Chemistry Equilibrium Constant PLEASE Help!? In an experiment, equal volumes of 0.00150 M FeCl3 and 0.00150 M NaSCN were mixed together and reacted according to the equation: Fe3+ (aq) + SCN– (aq) <--> Fe(SCN)2+ (aq) The equilibrium concentration of FeSCN 2+(aq) was 2.70...
Tuesday, October 16, 2012 at 9:38pm by LS
.......Fe^3+ + SCN^- ==> FeSCN^2+ I.....0.0015..0.0015......0 C.......-x.......-x.......x E...0.0015-x..0.0015-x.....x x = 2.70E-4 0.0015-x = ?
Tuesday, October 16, 2012 at 9:38pm by DrBob222
What is the cell potential for the reaction Mg(s) + Fe^2+(aq) -----> Mg^2+(aq) + Fe (s) at 63 degrees celsius when [Fe^2+]= 3.30 M and [Mg^2+]= 0.110 M
Saturday, November 3, 2012 at 2:04pm by Angie
Find the Eo for the cell as written. Then Ecell = Eocell + (RT/nF)lnQ Q = (Mg^2+)/(Fe(2+) Substitute and solve for Ecell.
Saturday, November 3, 2012 at 2:04pm by DrBob222
A gaseous reaction occurs at a constant pressure of 45.0 atm and releases 62.5 Kj of heat. Before the reaction, the volume of the system was 8.60 L . After the reaction, the volume of the system was 3.00 L. Calculate the total internal energy change in kilojoules.
Monday, November 5, 2012 at 9:14am by Ann
Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: C5H5N + H2O<-->C5H5NH+ + OH- The pKb of pyridine is 8.75. What is the pH of a 0.190 M solution of ...
Friday, November 30, 2012 at 1:56pm by joane
pKb = -log Kb -8.75 = log Kb Solve for Kb. ........BN + H2O ==> BNH^+ + OH^- I......0.190..........0.......0 C.......-x............x........x E......0.190-x........x........x Substitute the E line into the Kb expression and solve for x = OH^-, then convert to pH.
Friday, November 30, 2012 at 1:56pm by DrBob222
Tuesday, November 2, 2010 at 5:24pm by Anonymous