Number of results: 15,897
another chem question
Examine the following unbalanced chemical equation: CO(little2) + C --> CO Which of the following is the correctly balanced form of this equation? 2CO(little2) + C --> CO CO(little2) + C -->2CO CO(little2) + C(little2) --> CO CO(little2) + C -->C(little2)O ...
Friday, August 5, 2005 at 7:38pm by alf
can somebody answer my chem questions below plzz
I have posted some chem question below can somebody answer them plzzzzzz Multiple posts asking people to answer your questions will get you banned. Please be patient as someone will help you as soon as possible. If you were travling from Devner,Colardo to Bishmark, North ...
Friday, September 2, 2005 at 11:33am by Nisar
What is another name for cardamist? Please write the formula and a link to its structure. See http://antoine.frostburg.edu/chem/senese/101/consumer/faq/what-is-cardamist.shtml
Sunday, September 4, 2005 at 5:04pm by Nisar
Dr.Bob (thx) Check my work for this one pls
What is the molar solubility of Sr3(AsO4)2 and the concentration of Sr^2+ and AsO4^-3 in a saturated solution at 25 deg Celsius? The Ksp is 1.3E-18. Show the balanced reaction. Below, I write M.S. (molecular solubility) 1)Sr3(AsO4)2<---> 3Sr^2+ + 2AsO4^-3 M.S. xmol/L 3x ...
Sunday, June 11, 2006 at 3:18pm by Kizner
I'm tyring to study for my chem exam and I cant figure out how to do this question: The solubility of MgCl2 is 54.25 g per 100ml of water at 25 degrees C. A student prepares a 2.50 mol/L solution of MgCl2 and states it is a saturated solution. Useing calculations determine if ...
Saturday, June 17, 2006 at 11:55am by Tracy
Chemistry quick question
Ok so a quick question. I have the equation Ca3(PO4)2 --> 3Ca+2 + 2PO4-3 Sorr its confusing, int he first part the 3 4 and too are all little numbers at the bottom, for the second part the +2 and -3 are small numbers at the top to show the charges. Ok so anyways the ...
Tuesday, June 20, 2006 at 3:23pm by Tracy
The correction terms in the Van der Waals equation for a gas are designed to correct A. the pressure term (P +a/V2) for the attractive forces between particles. B. the volume term (V-b) for the finite volume of the particles. C. For the volume term (b) not the pressure term (a...
Wednesday, October 18, 2006 at 7:23pm by Mendi
Are: Ba(NO3)2, Ti)2, MgI2, and Ca(CH3COO)2 soluble or insoluble in H2O @ 25degrees C? Here is a site that lists the solubility rules. You should know this table; eventually you will want to know it so well that it is memorized. If you still have questions after viewing this ...
Friday, October 20, 2006 at 1:41pm by K
Use the following data (in kJ/mol) to estimate the standard enthalpy of formation (in kJ/mol) for hypothetical compound CsF2 in the solid state. Lattice energy of CsF2 -2347 First ionization energy of Cs 375.7 Second ionization energy of Cs 2422 Electron affinity of F -328 ...
Wednesday, November 1, 2006 at 6:20pm by Rossina
Logic (quick yes or no question)
quick yes or no question Is the sun the center of the universe or the earth the center? Neither. The sun is the center of the solar system. Each individual point can be considered the center of the observable universe. The wrote answer of course is no, neither are the center ...
Thursday, November 30, 2006 at 9:23pm by Bryan
How can I do this: 3KNO3(aq)+ Fe(SCN)3(aq) + NaOH(aq) <---> ? what do you have to do? write the products it makes. I don't know the products it makes. I have to figure out what adding all those produces. Im not sure its even possible? yes it is possible. first of all ...
Sunday, December 3, 2006 at 8:16pm by Nick
Quick question, since FePO4 is insoluble, will that mean a precipitate will form? During the experiment I don't remember seeing a precipitate. Is that my error, or is the precipitate hard to see? Sure. Adding Na3PO4 will make a big difference. FePO4 is almost completey ...
Sunday, December 17, 2006 at 10:35pm by Karl
Posted by chrissy on Saturday, January 6, 2007 at 1:23pm. In a lab expirement you add copper(II)nitrate to pure zinc. Write a balanced equation for this expirement and predict if a reaction will occur. For Further Reading Chemistry Equation - DrBob222, Saturday, January 6, ...
Saturday, January 6, 2007 at 8:32pm by chrissy-needs Chem help ASAP
Sorry about that. I don't know why it did that? I will try to recap the two or three sentences I read. The oxygen molecules dissolve in H2O in the spaces between the molecules of H2O. Liquid water consists of a network of hydrogen bonded water molecules. The oxygen, in a sense...
Thursday, April 19, 2007 at 10:28pm by DrBob222
hi im doing a post lab sheet for chem class. and im having a little trouble. i have: temperature 12.6 C -> 285.6 K Time 816 sec but im supposed to find 1/T(K) it looks like my classmate did this: 12.6 x 285.6 = 3598.56 however they gave me the response to group 2 also: and ...
Saturday, October 16, 2010 at 9:08am by chem
help chem quick question!
I have to find a food label that has horrible chemicals in it (such as dextrose). I am supposed to find 2 food lables with the nastiest labels.? What foods would be a good choice?
Monday, April 18, 2011 at 1:23pm by Samantha
help chem quick question!
That depends upon how you define "horrible". What's wrong with dextrose? Other than that many nutritionists label anything with sugar in it a horrible food. I think you can pick almost any label in the house and find something that sounds horrible. Those chemical names sound ...
Monday, April 18, 2011 at 1:23pm by DrBob222
chem. quick help
Ni(OH)2(s) + H2SO4 = 2H2O + NiSO4 so i balance this problem but I don't know the states of matter except the first one
Wednesday, January 16, 2013 at 6:25pm by thad
CHEM QUICK HELP
Which of the following are correct statements? (Could be as many as 4) 1. Standard pressure is 101.3 atmospheres 2. One mole of gas contains 22.4 representative particles 3. One mole of gas always occupies 22.4 liters regardless of other conditions 4. Solids can always be ...
Thursday, April 11, 2013 at 11:59am by emily
CHEM QUICK HELP
1,2,3,4,5 & 7 are not right. I suppose 6 is right but I like 273 K better than 0o C.
Thursday, April 11, 2013 at 11:59am by DrBob222