Number of results: 47,898
science, chemestry
plz help
Sunday, November 18, 2012 at 12:18pm by 123
science, chemestry
yeah but i don't know how to replace it with the numbers they gave me
Sunday, November 18, 2012 at 12:18pm by smile
science, chemestry
Remember E(photon) = E(electron)+E(Binding) Look also for deBroglie wave.
Sunday, November 18, 2012 at 12:18pm by PAL
Chemestry
Just follow the steps. http://www.jiskha.com/science/chemistry/stoichiometry.html
Wednesday, March 30, 2011 at 10:54pm by DrBob222
Chemestry
Here is a worked example of a stoichiometry problem. Just follow the steps. http://www.jiskha.com/science/chemistry/stoichiometry.html
Thursday, June 2, 2011 at 12:50pm by DrBob222
chemestry
Here is a worked example of a stoichiometry problem. Just follow the steps. http://www.jiskha.com/science/chemistry/stoichiometry.html
Wednesday, December 8, 2010 at 1:01pm by DrBob222
chemestry
Follow these steps. http://www.jiskha.com/science/chemistry/stoichiometry.html
Wednesday, March 14, 2012 at 3:54pm by DrBob222
chemestry C
See this example. http://www.jiskha.com/science/chemistry/stoichiometry.html
Monday, November 14, 2011 at 5:53pm by DrBob222
Chemestry
You can follow the instructions in the attached step by step. This will give you theoretical yield. http://www.jiskha.com/science/chemistry/stoichiometry.html
Thursday, February 2, 2012 at 10:02pm by DrBob222
chemestry
This explains stoichiometry problems. http://www.jiskha.com/science/chemistry/stoichiometry.html
Tuesday, February 14, 2012 at 10:09pm by DrBob222
chemestry
Thank you =)
Thursday, March 29, 2012 at 10:40am by lizzy
chemestry
yes.
Wednesday, November 17, 2010 at 4:45pm by DrBob222
chemestry
8.87
Saturday, January 12, 2013 at 7:50pm by Anonymous
chemestry
MgI2
Wednesday, November 28, 2012 at 8:27pm by DrBob222
chemestry
Can you do M = moles/L?
Tuesday, November 22, 2011 at 5:08pm by DrBob222
Chemestry
thanks sarah
Thursday, September 17, 2009 at 5:35pm by Chad
Chemestry
and colder
Thursday, September 17, 2009 at 5:35pm by sarah
chemestry
(+25) + (-29) = ?
Wednesday, November 28, 2012 at 8:24pm by DrBob222
chemestry
what is the name of BCl3
Wednesday, November 28, 2012 at 8:27pm by Anonymous
Chemestry--ChemIstry
The odor.
Thursday, September 29, 2011 at 12:13am by DrBob222
chemestry
P1V1 = P2V2
Monday, July 18, 2011 at 12:38pm by DrBob222
Chemestry
0.038
Wednesday, May 4, 2011 at 9:16pm by Paulo Costa
Chemestry
I answered this below.
Tuesday, May 3, 2011 at 8:36pm by DrBob222
Chemestry
pH = -log(H^+)
Saturday, June 19, 2010 at 6:48am by DrBob222
Chemestry
What is the pH? 1.6 x 10^(-5)?
Saturday, June 19, 2010 at 6:48am by Kate
chemestry
see above
Wednesday, April 28, 2010 at 10:10pm by DrBob222
chemestry
answered below.
Thursday, September 17, 2009 at 7:20pm by DrBob222
Chemestry
less gravity
Thursday, September 17, 2009 at 5:35pm by sarah
science, chemestry
Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=3.091 A˚. What is the maximum wavelength (in meters) of radiation ...
Sunday, November 18, 2012 at 12:18pm by Anonymous
science, chemestry
Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=3.091 A˚. What is the maximum wavelength (in meters) of radiation ...
Sunday, November 18, 2012 at 12:18pm by Anonymous
Chemestry
Answer is 17.3
Friday, February 19, 2010 at 7:05pm by Raymond murphy
chemestry
what is limiting reagent ?
Monday, February 18, 2013 at 12:46am by shashi ranjan
CHEMESTRY
See your other post.
Wednesday, February 6, 2013 at 9:31pm by DrBob222
GENERAL CHEMESTRY
What difficulty are you having with this?
Wednesday, January 16, 2013 at 9:20pm by bobpursley
Chemestry
See your post above.
Saturday, November 17, 2012 at 11:07pm by DrBob222
chemestry 130
Calculators can be used for this.
Tuesday, November 13, 2012 at 7:58pm by DrBob222
Chemestry
See your other post.
Wednesday, May 23, 2012 at 4:05pm by DrBob222
analytical chemestry
Do you have a question?
Saturday, December 10, 2011 at 2:56am by DrBob222
chemestry
denstiy= mass/volume
Tuesday, September 6, 2011 at 8:51pm by bobpursley
chemestry
what do the plus signs mean?
Tuesday, March 22, 2011 at 9:07pm by celina
chemestry
I wasn't there. I don't know what experiment was conducted. I don't know what was observed.
Friday, May 14, 2010 at 12:55pm by DrBob222
chemestry
sorry its 5-ethyl-2-hexyne
Wednesday, April 28, 2010 at 10:11pm by yaimery
Chemestry
Use Henry's Law.
Monday, March 22, 2010 at 7:29pm by DrBob222
chemestry
what is the formula for boyles law
Saturday, January 16, 2010 at 7:32pm by izzy
chemestry
at what temperature does ice melt
Thursday, September 17, 2009 at 5:54pm by Chad
Gen Chemestry
thanks DrBob222 I appreciated your help
Saturday, October 25, 2008 at 12:16am by Roth
Chemestry
(a) 58.87 g all I know!
Wednesday, February 6, 2013 at 9:09pm by Lexi Harris
CHEMESTRY
13 mol CsXeF7
Wednesday, February 6, 2013 at 9:33pm by Lexi Harris
Chemestry
How many moles of NaHCO3 are in a 44g sample?
Monday, January 28, 2013 at 4:57am by Douglas
chemestry
moles = grams/molar mass
Sunday, September 25, 2011 at 1:23pm by DrBob222
chemestry
What experiment are you doing? What have you added to what? What is the procedure?
Wednesday, March 30, 2011 at 6:32pm by DrBob222
chemestry
mL1 x M1 = mL2 x M2
Wednesday, January 19, 2011 at 10:05pm by DrBob222
chemestry
Wouldn't the longest chain be a heptyne?
Wednesday, April 28, 2010 at 10:11pm by bobpursley
chemestry
what is analgesics? what is its composition? what is their utility in curing?
Tuesday, May 5, 2009 at 6:16am by soumya
chemestry
what are four components of the water molecule?
Monday, October 20, 2008 at 5:20pm by Anonymous
chemestry
divide 27 by one million.
Sunday, August 24, 2008 at 1:41pm by bobpursley
chemestry
You're probably thinking ob boron.
Tuesday, April 22, 2008 at 7:23pm by DrBob222
chemestry
mass=density*length*width*thickness
Saturday, May 18, 2013 at 4:25pm by bobpursley
chemestry
what is the chemical formula for maganese(II)iodine?
Wednesday, November 28, 2012 at 8:27pm by Anonymous
Chemestry
PV = nRT. Don't forget T must be in kelvin.
Saturday, November 17, 2012 at 11:15pm by DrBob222
Chemestry
What property of paradichlorobenzene may convince you that it is an ingredient in mothballs?
Thursday, September 29, 2011 at 12:13am by Helena
chemestry
calculate the moles of compound in .540g of ammonium bromide
Sunday, September 25, 2011 at 1:23pm by Help!
Chemestry
Your question makes no sense to me. Please clarify it.
Monday, February 7, 2011 at 8:53pm by DrBob222
chemestry
what is the condensed structural formula for. 5- ethyl-2-hexene
Wednesday, April 28, 2010 at 10:10pm by yaimery
chemestry
One way of writing it is P1V1 = P2V2
Saturday, January 16, 2010 at 7:32pm by DrBob222
Chemestry 095
An chemistry is spelled correctly here.
Sunday, November 29, 2009 at 3:11pm by DrBob222
chemestry
You might learn to spell chemistry correctly.
Thursday, September 17, 2009 at 5:54pm by DrBob222
Chemestry
where you got the 7.7 from? and how you calculate the molality for it. I am stuck please help
Sunday, October 26, 2008 at 5:38pm by Joshua
chemestry
They correct for volume of the molecules and the attractive forces between them.
Sunday, February 17, 2013 at 9:50am by DrBob222
Chemestry
You don't have an arrow. How do you know where the reactants stop and the products begin?
Wednesday, February 6, 2013 at 7:49pm by DrBob222
chemestry
what is the charge on an ion with 25 protons and 29 electrons?
Wednesday, November 28, 2012 at 8:24pm by Anonymous
Chemestry
ok thanks but i still get stuck doing the theoretical yield can you please show me how to do this?
Thursday, February 2, 2012 at 10:02pm by Jocelyn
chemestry
3*C + 6*H + 2*O = ?? Look up atomic masses on the periodic table.
Sunday, September 25, 2011 at 1:18pm by DrBob222
chemestry
calculate the moles of compound in 0.540 grams of ammonium Bromide
Saturday, September 24, 2011 at 2:08pm by Help!
chemestry
You don't give any information about the experiment being conducted; I don't know what you are doing.
Monday, September 5, 2011 at 4:12pm by DrBob222
chemestry
Which element of group 3A behave as a nonmetal or semimetal?
Tuesday, April 22, 2008 at 7:23pm by tomas
chemestry
if you dissolve 350 g of K(2)CrO(4)in 2.4 kg of water, what is the molality of the solution?
Thursday, April 25, 2013 at 12:01am by crystal
Chemestry
The definition is M = mols/L soln. Plug in the numbers and read the answer.
Friday, November 23, 2012 at 6:02pm by DrBob222
chemestry
if my mass of my aluminum cube is 5.45 and volume is 2 ml, what i my density?
Tuesday, September 6, 2011 at 8:51pm by ana
Chemestry
The alcohol is a more polar molecule and there is hydrogen bonding in ethanol.
Tuesday, May 3, 2011 at 7:59pm by DrBob222
chemestry
Use (V1/T1) = (V2/T2) T must be in kelvin.
Sunday, April 17, 2011 at 10:00pm by DrBob222
chemestry
The oxide ion O2- has the same electron configuration as neon?
Wednesday, November 17, 2010 at 4:45pm by joly
chemestry
what does air pressure do to the freezing, melting ad boiling point
Thursday, September 17, 2009 at 7:20pm by Chad
chemestry
what does air pressute do to the freezing, melting ad boiling point
Thursday, September 17, 2009 at 6:47pm by Chad
chemestry
Zero degrees celsius. By the way, it freezes at the same temperature.
Thursday, September 17, 2009 at 5:54pm by DrBob222
chemestry
Explain the physical significance of van der waals,parameters ?
Sunday, February 17, 2013 at 9:50am by shshi ranjan
Chemestry
Find the molarity of a solution containing 0.75 mol of NaCl with a volume of 1.5 L.
Friday, November 23, 2012 at 6:02pm by Becky
Chemestry
I got NaOH 7%, its density is 1,08g/ml. Calculate the molar concentration
Wednesday, May 23, 2012 at 4:07pm by Martins
Chemestry
I got NaOH, 7%, and its density is 1,08g/mol. Calculate the molar concentration.
Wednesday, May 23, 2012 at 4:05pm by Martins
chemestry
(P1V1/T1) = (P2V2/T2) Don't forget T must be in kelvin. K = 273 + C
Friday, December 2, 2011 at 11:02pm by DrBob222
chemestry
Yes, that's right. See my complete response to your earlier post if you want to change numbers.
Wednesday, September 21, 2011 at 4:14pm by DrBob222
chemestry
I'm unsure how to figure this question out. "How many moles of Na2CO3 are there in 10.0 L of 2.0 M solution?"
Tuesday, January 18, 2011 at 2:34pm by Anonymous
chemestry
Dr Bob has it correct, but if you are interested in Sea Ice, it melts at -1.8C
Thursday, September 17, 2009 at 5:54pm by bobpursley
Chemestry
why would it take longer to cook food in the mountians than at sea level?
Thursday, September 17, 2009 at 5:35pm by Chad
chemestry
what is the wavelength of the energetic spectral line in the ultraviolet series of the h atom and how to find it
Monday, September 14, 2009 at 10:05pm by sam
analytical chemestry
100grms lead nitrate+20ml sodium hydroxide+100ml h2o =
Saturday, December 10, 2011 at 2:56am by joseph
Chemestry
HELP!!!!!!A solution made from 19.0 g of Na Br and 500 ml of water has what molarity?
Wednesday, May 4, 2011 at 9:16pm by Cindi
chemestry
given 43 moles of KCl how much HNO3 is needed to complet the reaction
Wednesday, December 8, 2010 at 1:01pm by juan
chemestry
How many moles of zinc acetate, Zn(CH3COO)2, are there in 163 mL of a 0.160 M solution?
Wednesday, November 17, 2010 at 1:27am by cristy
chemestry
how is ionizaion energy different from electron affinity? use a chemical equation to clarify your definition.
Tuesday, March 22, 2011 at 9:32pm by celina
Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>
For Further Reading
