Number of results: 16,986
Chem Urgent Help
can u plz figure out the answer for me .. its very urgent.. thnks .. i still didnt get it thnks a lot Dr bob
Wednesday, November 12, 2008 at 10:18pm by Sarah
Chem Urgent!
it is balanced
Saturday, March 15, 2008 at 6:51pm by K
urgent urgent urgent
nor do I understand the question. Chemical makeup: proteins, containing C, H, O, N, a few S, and some P.
Friday, February 8, 2013 at 9:26pm by bobpursley
Urgent Chem help.plz
2.=4
Saturday, January 24, 2009 at 3:03pm by amicus
Urgent Chem help.plz
4,8
Saturday, January 24, 2009 at 3:03pm by amicus
Chem Help URGENT
thank you so much
Thursday, October 28, 2010 at 12:34am by Allison
Urgent Chem help.plz
1. 4,8 2.4
Saturday, January 24, 2009 at 3:03pm by Shirley
CHEM URGENT
are you in mckeachies
Friday, February 13, 2009 at 7:41pm by Anonymous
Chem Urgent!
PbSO4
Thursday, February 28, 2008 at 7:56pm by bobpursley
Chem Urgent
Its Molar. Thanks
Friday, November 16, 2007 at 12:14pm by Aman
urgent urgent urgent
what is the chemical make up of actin and myocin
Friday, February 8, 2013 at 9:26pm by zachary
URGENT LANGUAGE ARTS
PLEASE THIS IS URGENT VERY URGENT BUT I NEED HELP
Monday, December 17, 2012 at 9:00pm by Gabby
Chem Urgent!
sry no answer
Wednesday, February 20, 2008 at 7:46pm by lilly
Chem Urgent
Absorbance = 1/T OR 100/%T.
Friday, November 16, 2007 at 12:14pm by DrBob222
Chem lab last question!! Urgent help
THANK YOU SO MUCH!!!
Wednesday, February 27, 2013 at 10:27am by Kim
chem help urgent!
nvm i got it wrong:(
Tuesday, March 1, 2011 at 4:08pm by Rebekah
Urgent Chem Help
See next question.
Sunday, March 15, 2009 at 3:34pm by DrBob222
Urgent for Chem!
Are there 2 N's on the left side of the equation?
Saturday, March 15, 2008 at 7:25pm by Doubtful
Chem- REALLY URGENT!!!
THANK YOU SOOOO MUCH!!!!! I WAS SO CONFUSED!!!
Wednesday, December 19, 2012 at 6:38pm by Taylor
Organic Chem I Lab URGENT
PLEASE assist
Tuesday, November 30, 2010 at 4:06pm by Meredith
Urgent Chem Help someone plz
thnks i got it ...
Saturday, January 24, 2009 at 1:09pm by Casandara
Chem Urgent!
grams = mols x molar mass
Tuesday, February 26, 2008 at 7:36pm by DrBob222
CHEM PLZ URGENT!!
mass= density*volume
Friday, February 22, 2008 at 9:30am by bobpursley
Chem Urgent!
What is the number of grams for 1 mol lead?
Wednesday, February 20, 2008 at 7:46pm by Lisa
Urgent need help on chem please someone
I answered this one for you.
Thursday, January 31, 2013 at 9:32pm by Devron
chem urgent!
the h2o is ÄH°f = -285.8 kJ/mol
Tuesday, November 6, 2012 at 10:20am by rebekah
chem urgent!
Where does the H2O(l) by itself at the bottom of your post fit in?
Tuesday, November 6, 2012 at 10:20am by DrBob222
Urgent! for Chem
what is it that you are looking for specifically? Try asking for "drwls"...he may be able to help with this one.
Saturday, March 15, 2008 at 6:51pm by K
Chem Also Urgent!
grams = mols x molar mass
Tuesday, February 26, 2008 at 7:44pm by DrBob222
Plz urgent
OK, good. When a chem tutor comes online, he'll find it then.
Saturday, February 23, 2013 at 7:42am by Writeacher
Chem Urgent!
How can I divide this answer Pb2(SO4)2 it needs to be simplified by 2)?
Thursday, February 28, 2008 at 7:56pm by Lisa
math urgent urgent urgent
perpendicular to line -2x+y=7 contains the point (-4,-2) the equation of line is
Friday, November 30, 2012 at 11:56pm by zach w
Chem Very Urgent
don't round the answers so early, and you will see that one of them is the limiting reactant
Friday, January 8, 2010 at 6:43pm by a
Urgent Chem Help someone plz
I assume you have this now and don't need additional help.
Saturday, January 24, 2009 at 1:09pm by DrBob222
oops--urgent urgent urgent
know, not now
Friday, February 8, 2013 at 9:26pm by DrBob222
chem (urgent)
Can someone please explain to me in simple terms what the eutectic point and temperature are?
Friday, September 16, 2011 at 12:03pm by laura
Plz someone Chem Urgent Help
U=(-443-76-121-376+349) =-667
Friday, January 16, 2009 at 9:06pm by Tanny
Chem Urgent Help
Just plug in the numbers and punch your calculator. The idea here is to show you how to do it, not to do it for you.
Wednesday, November 12, 2008 at 10:18pm by DrBob222
Chem Urgent!
I need help in balancing equation for NO2 + O2 -> NO + O3 Please help...
Saturday, March 15, 2008 at 6:51pm by Lily
Chem Urgent!
How do I determine the number of moles for the substance: 3.5 x 10^23 molecules H2O?
Tuesday, February 26, 2008 at 7:36pm by Lisa
Chem Urgent
If for a. the concentration is 2.02E-6, Wavelength at 630, Absorbance is .216, how would I find the %T.
Friday, November 16, 2007 at 12:14pm by Aman
Chem Urgent Help ?
By the way...... too made (I meant too bad) that "dis" and "dese" slipped into the question.
Saturday, November 22, 2008 at 9:16pm by DrBob222
Chem Also Urgent!
How do I determine the number of grams for the following substance: 2.40 mol O2?
Tuesday, February 26, 2008 at 7:44pm by Lisa
CHEM URGENT
Determine the ionization energy of a hydrogen atom (in kJ/mol) if the electron is in its ground state
Saturday, January 17, 2009 at 1:26am by henry
math urgent urgent urgent
(12,0) and (0,6) center at (-2,2) radius 3 domain all reals, range all reals >= -9 (-2,-25)
Saturday, December 1, 2012 at 12:37am by Steve
Chem Also Urgent!
1mol =16 gO 2.40 mol O2* (32gO2/1molO2) =76.8gO2
Tuesday, February 26, 2008 at 7:44pm by ^Quen^
CHEM PLZ URGENT!!
You are dividing density by volume instead of multiplying. BobPursley gave your the correct formula to use.
Friday, February 22, 2008 at 9:30am by drwls
Chem II (urgent plz)
Consider a titration of 50.00 mL of 0.1005 M HCl with 0.1012 M NaOH.
Tuesday, July 17, 2007 at 9:19am by Jessie
Organic Chem (URGENT)
What is the monomeric unit of a chain of molecules joined by peptide bonds? Answer:?? If anyone can help with this question. Thank you very much.
Wednesday, January 26, 2011 at 10:13pm by John
Urgent for Chem!
need help in balancing equation for NO2 + O2 -> NO + O3 Please help it may look balance but it is not. This is a tricky one
Saturday, March 15, 2008 at 7:25pm by Anynamous
Urgent! for Chem
I need help in balancing equation for NO2 + O2 -> NO + O3 Please help it may look balance but it is not. This is a tricky one.
Saturday, March 15, 2008 at 6:51pm by LR
urgent urgent urgent
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. explain the process the muscle go through
Wednesday, February 6, 2013 at 9:11pm by zachary
math urgent urgent urgent
1)let f(x) be a polynomial function explian how to use the factor theorem to check if (x-c) is a factor of F(x) 2) use synthetic division to factor X^2-2x^2-9x+18 completly
Friday, November 30, 2012 at 9:30pm by zach w
CHEM..URGENT!
What is produced at each electrode in the electrolysis of NaBr(aq) and AgF(aq)?
Monday, March 30, 2009 at 9:28pm by H
chem
i am getting -28 KJ .. is it rite plz chk
Wednesday, November 12, 2008 at 11:54pm by urgent plz
CHEM URGENT
CONFIRMED: H-bond, dispersion forces and dipole-dipole are correct.
Friday, February 13, 2009 at 7:41pm by Anonymous
Urgent Chem help plz
How did you get 103? 2*[(4*SF4)+O=O] - 2*[(4*SF4)+S=O] = ?? I get something in the order of -550 or so.
Wednesday, November 12, 2008 at 11:16pm by DrBob222
math urgent urgent urgent
-2x+y=7 can be written as y=2x+7, so we see it has slope=2 so, the perpendicular has slope -1/2 now you have a point and a slope: y+2 = -1/2 (x+4) and you can massage that as you will.
Friday, November 30, 2012 at 11:56pm by Steve
urgent urgent urgent
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. •Explain the chemical process that occurred ...
Thursday, February 7, 2013 at 11:42am by zachary
Plz someone Chem Urgent Help
What is E(11)? Is that the ionization potential of Cs gas to Cs^+ + e?
Friday, January 16, 2009 at 9:06pm by DrBob222
Chem Urgent
Use your calculator. A = log (1/T) 0.216 = log (1/T) 1.644 = 1/T T = 0.608 %T = 60.8%
Friday, November 16, 2007 at 12:14pm by DrBob222
Urgent Chem Help someone plz
its in the textbook solution manual question 13.31, i havent done it yet but if i get a chance to do it before you i will post it up
Saturday, January 24, 2009 at 1:09pm by Saira
CHEM URGENT
for all 1, 2, 3, the bonds are H-bond, dispersion forces, and dipole-dipole. yea it's weird.
Friday, February 13, 2009 at 7:41pm by Anonymous
Chem URGENT!!
The answer would be Si-O. What about the sec. question.......Is the answer right? Thanks BTW.
Friday, April 25, 2008 at 11:06am by Sania
math urgent urgent urgent
6x+2y=12 find intercept a circle equation x^2+y^2+4x-4y-1=0 and graph 2)find domain and range f(x)=x^2-4x-5 find vertex of f(x) =x^2+4x-21
Friday, November 30, 2012 at 11:56pm by zach w
math urgent urgent urgent
x+2y=12 find intercept a circle equation x^2+y^2+4x-4y-1=0 and graph 2)find domain and range f(x)=x^2-4x-5 find vertex of f(x) =x^2+4x-21
Saturday, December 1, 2012 at 12:37am by zach w
Chem Urgent!
for the reactants you have N=1 & O=4. for the products you have N=1 & O=4.
Saturday, March 15, 2008 at 6:51pm by K
URGENT CHEM
Write a balanced equation for the following reduction-oxidation reaction. SO3(2-) + MnO4(-) --- SO4(2–) + Mn(2+) numbers in parenthesis means the charge
Sunday, January 18, 2009 at 1:29am by max
chem help urgent!
Kr is a gas. Right? Cu is a solid. Right? So which do you think boils (melts, even) higher.
Tuesday, March 1, 2011 at 4:08pm by DrBob222
chem urgent
molality=massbenzen/molmassbenze*Kgsolvent = massbenzene/(Molmass*(1510g-massbenzene)) solve for mass benzene
Friday, February 6, 2009 at 1:09am by bobpursley
Chem Urgent
What do you mean? I know the equation is %T=It/Io*100 A=log(Io/It)=-logT I don't know how to use it and plug in the information I have.
Friday, November 16, 2007 at 12:14pm by Aman
Urgent Chem Help
A certain substance has a heat of vaporization of 55.30 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.50 times higher than it was at 361 K?
Sunday, February 10, 2013 at 8:13pm by Carl
English language
what could be an example of something that is urgent but is not important? and something that is important but not urgent? these questions refer to daily actions or well any actions, i have absolutely no idea how to answer that. Sure doesn't urgent and important meant ...
Tuesday, November 29, 2011 at 2:32pm by Caroline
AP CHEM (URGENT)!!!!!
If the EA is high enough to overcome the IP, then enough energy is there to make the transfer. In practice that are other factors to consider.
Wednesday, November 2, 2011 at 9:11pm by DrBob222
Chem Urgent!
1 mol of anything has 6.02 x 10^23 molecules of (in this case) H2O. This must be close to a 0.5 mol but you need to do the exact arithmetic.
Tuesday, February 26, 2008 at 7:36pm by DrBob222
math URGENT
please factor 2.75x^2-7x-120
Wednesday, December 19, 2012 at 7:51pm by TyLeR c URGENT
Plz someone Chem Urgent Help
Assuming E(11) is the ionization potential for Cs(g) ==> Cs^+ +e then Sublimation + ionization + 1/2 dissociation + electron affinity + Ecrystallization = heat formation. If your numbers are right, then 76+376+121-349+Ecrystallization = -443. Solve for E crystal. Most P...
Friday, January 16, 2009 at 9:06pm by DrBob222
Precalculus(URGENT)
Sorry, I only do the non-URGENT ones
Thursday, March 11, 2010 at 4:38pm by drwls
algebra 1...urgent
If your question is so urgent, what have you done to try to solve these problems?
Wednesday, March 5, 2008 at 9:24pm by Ms. Sue
CHEM URGENT
Infrared, ultraviolet, and visible radiation are all part of the electromagnetic spectrum. Arrange the three types of radiation in order of increasing energy.
Saturday, January 17, 2009 at 12:36am by james
Urgent language arts
It's urgent i got 5 min.
Monday, December 17, 2012 at 11:48pm by Gabby
chemistry urgent urgent
Why are you having trouble with this? What is it you don't understand?
Monday, December 10, 2012 at 9:00pm by DrBob222
Chem Very Urgent
amazing. exactly the same. No limiting reactant. check your calcs again. I might have made a mistake, but I got 9.57 g. 0.019*(2*208.98+3*32)
Friday, January 8, 2010 at 6:43pm by bobpursley
Urgent Chem Help
Use the Clausius-Clapeyron equation. ln(p2/p1) = (dHvap/R)(1/T1 - 1/T2) make p2 = 3.5p1.Remember T must be in kelvin.
Sunday, February 10, 2013 at 8:13pm by DrBob222
AP CHEM (URGENT)!!!!!
How can ionization potential and electron affinity be used to predict whether or not a simple synthesis reaction will occur between a metal and a non-metal.
Wednesday, November 2, 2011 at 9:11pm by Valm
Math *URGENT
Wow, classic case of urgent "homework dumping" I will be very happy to check your answers.
Thursday, December 20, 2012 at 9:37pm by Reiny
Venn Diagram (URGENT)
What are 6 similarities between Canada and Haiti? 1. French Influence 2. 3. 4. 5. 6. Please someone help, this is urgent. thank you.
Thursday, April 30, 2009 at 12:56am by John
chemistry urgent urgent
Answered in another post.
Monday, January 28, 2013 at 10:51am by Devron
chemistry urgent urgent
do compare the differentes
Monday, December 10, 2012 at 9:00pm by zachary
URGENT LANGUAGE ARTS URGENT~!
The website also says the hyphen is unnecessary when it follows the modified word.
Friday, April 12, 2013 at 10:09pm by Ms. Sue
egypt
urgent!!!!urgent!!!!!! have to go to bruins game at 5:45whats the magical fiqures inbetween the rapping in a mummy?
Thursday, January 29, 2009 at 5:06pm by lilgeeny245
Math urgent
explain how to compute the xy term of the product (3x-4y)^2? if possible with solution please.... its urgent
Sunday, September 7, 2008 at 5:01pm by Ayushma
chem
2NH3+ 2Na---) 2NaNH2+1H2 assuming that you start with 25.7 g of ammonia gas and 22.4 g of sodium metal and asuming that the reaction goes to completion what is the mass in grams of NaNH2
Friday, March 15, 2013 at 2:40am by shane URGENT pls help thank u
Urgent Chem Help someone plz
Calculate the mole fraction of the solute in the following aqueous solutions 3.25% ethanol, by volume (d= 0.993 g/ml ; pure C2H5OH, d= 0.789 g/ml )
Saturday, January 24, 2009 at 1:09pm by Casandara
urgent chem help ( dr bob plz)
This problem is different than the first one; however, I didn't do that one right. Give me a few seconds and we can talk about this one.
Tuesday, February 17, 2009 at 10:15pm by DrBob222
GEOGRAPHY (URGENT!!!)
I NEED HELP!!! this is urgent!!! Human-Environmental Interactions: how did the people in Khartoum modify the environment? how is the people in khartoum being influence by the physical landscape/environment? sorry my grammar sucks i have other questions but i really extremely ...
Thursday, November 18, 2010 at 7:50pm by NEED HELP URGENT!!!
VERY URGENT MATH~!!!!!!!!
ik i shouldn't put a time limit and im srry but this is really urgent i didn't know how late it was DX PLZZ HELP!
Friday, January 11, 2013 at 9:15pm by Gabby
Urgent for Chem!
I'm sorry but I have to say it IS balanced. The thing is if it wasn't balanced you would have the N's or the O's being different in number from one side or the other.
Saturday, March 15, 2008 at 7:25pm by ~christina~
chem
I have a really urgent question. I am wondering wheter or not esters are polar and what types of intermolular forces they have. can anybody answer this question nvm
Tuesday, December 19, 2006 at 12:17am by steff
URGENT LANGUAGE ARTS URGENT~!
"on the same line"?? What in the world does that mean? Make sure you are clear on what type of word each one is. Then re-think your answer.
Friday, April 12, 2013 at 10:09pm by Writeacher
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