Search: chemistry... HELPP

Number of results: 92,012

CHEMISTRY
ok thanks
Wednesday, October 26, 2011 at 5:20pm by HELPP

Chemistry
ok thank you
Wednesday, October 26, 2011 at 5:23pm by HELPP

CHEMISTRY
THANKS
Wednesday, October 26, 2011 at 3:03pm by HELPP ME

urgent alg 1
add or subtract 2 2 (2t -8t)+ (8t + 9t) second question 3 2 3 (t +8t ) + (-3t ) please helpp its urgent i have the answer butt im not suree pleasee helpp
Wednesday, February 9, 2011 at 11:46pm by kimberly

CHEMISTRY
so i do the -log(3.4x10^-3)=2.46
Wednesday, October 26, 2011 at 5:20pm by HELPP

CHEMISTRY
ok iget 0.328 not 0.0984
Wednesday, October 26, 2011 at 2:33pm by HELPP ME

AP CHEMISTRY
U guys r no helpp!!!!!!!!!!!!! booooooooooooooooooooooooooooooooooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Saturday, February 25, 2012 at 12:23pm by DAN

CHEMISTRY
ok i get 24.4/3 = 8.13 and the solve for x2
Wednesday, October 26, 2011 at 2:33pm by HELPP ME

HELPP !!
Copper(I) ions in aqueous solution react with NH3 according to Cu^+ + 2NH3 --> Cu(NH3)2^+ Kf=6.3x10^10 Calculate the solubility (in g/L) of CuBr (Ksp=6.3x10^-9) in 0.81 M NH3.
Thursday, May 10, 2012 at 7:58pm by HELPP !

CHEMISTRY
They give answer 0.0984 mol and i get 3 something
Wednesday, October 26, 2011 at 2:33pm by HELPP ME

Chemistry
OMGGGTHANKYOUUU SOOOO MUCHHHSIR!!! I REALLY appreciateyour helpp!!!Thankyou!!
Thursday, March 7, 2013 at 9:08pm by Kristien

Chemistry- helpp!
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

chemistry... HELPP
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

chemistry
It takes 1 hour and 17 min. for a 1.000g sample of a certain isotope to decay to 0.121g. What is the half-life of this isotope? plssss helpp
Monday, September 24, 2012 at 4:42pm by Shay

Science chemistry
It takes 1 hour and 17 min. for a 1.000gsample of a certain isotope to decay to 0.121g. What is the half-life of this isotope? plssss helpp
Monday, September 24, 2012 at 1:22pm by Shay

CHEMISTRY
HX) = 0.600 mol/3.00L = 0.2 M (H2) = 0.150 mol/3.00L = 0.05M (0.2)^2/0.05)(24.4)=0.327
Wednesday, October 26, 2011 at 2:33pm by HELPP ME

CHEMISTRY HELPP!!!!
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... HELPP
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

chemistry
The concentration of NaOH in a solution is 7.00 10-6 M. What is the [H3O+] in the solution? _______________M What is the [OH-] in the solution? __________M What is the pH of the solution? What is the pOH of the solution? HELPP?? i don't understand any of this...
Wednesday, December 22, 2010 at 4:17pm by jim

chemistry... HELPP
.......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

CHEMISTRY
If the OH ion concentration in an aqueous solution at 25 celsius is 3.4x10^-3 M the the H concentration in moles per liter in the same solution is? answers is 2.9x10^-12 i do the -log and i get 2.46 i dont know that else
Wednesday, October 26, 2011 at 5:20pm by HELPP

Chemistry
At 60 celsius the value of Kw is 9.5x10^-14. considering this waht is the calculated value for the pOH of a 2.00x10^-3 M HCL solution at this temperature? the answer is 10.32 i do the -log and i get 11.31 please advice
Wednesday, October 26, 2011 at 5:23pm by HELPP

HELPP !!
milk
Thursday, May 10, 2012 at 7:58pm by poop

Math
Thank you a lot!
Thursday, January 10, 2013 at 11:11pm by HELPP!!!

Math
Thanks a lot!
Thursday, January 10, 2013 at 10:28pm by HELPP!!!

Math
Thank you a lot!
Thursday, January 10, 2013 at 10:23pm by HELPP!!!

HELPP math
Thank u
Saturday, December 29, 2012 at 5:12pm by Shanty

History
helpp me
Friday, November 16, 2012 at 3:21pm by Jman

geometry
HELPP!!
Friday, February 17, 2012 at 3:13pm by tori

Science
HELPP!
Wednesday, September 9, 2009 at 11:24pm by Taylor

math helpp! :|
You're welcome! =)
Saturday, November 1, 2008 at 7:08pm by Writeacher

physics
what is g?
Monday, September 17, 2007 at 7:50pm by confusedd!HELPP!!!

Chemistry- helpp!
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

CHEMISTRY
IF AFTER PRECIPITATION OF THE GROUP I CATIONS AS CHLORIDES BY THE REACTION WITH HCL NEARLY ALL OF THE PRECIPITATE DISSOLVES IN THE HOT WATER. WHAT ION IS MOST PROBABLY PRESENT AND WHICH IONS ARE MOST PROBABLY ABSENT?
Sunday, October 16, 2011 at 7:11pm by HELPP NO IDEA

math helpp
3/10 and 7/8
Wednesday, January 16, 2013 at 8:14pm by tesj

english
PLEASE HELPP!!
Thursday, October 25, 2012 at 3:06pm by Aya

Geometry HELPP
find H(-5,5) and I (7,3)
Saturday, November 7, 2009 at 2:59pm by cierra

English-Literature
helpp
Tuesday, July 27, 2010 at 7:07pm by olivia

SCIENCE. I NEED HELPP
Okay thank you,(:
Wednesday, February 8, 2012 at 9:58pm by A Girl.

math
definition of area ??? helpp :/
Thursday, February 2, 2012 at 8:45pm by s

CHEM HELPP!
Idk
Monday, April 12, 2010 at 7:02pm by Dave

MATH
Please helpp!!!!
Sunday, July 10, 2011 at 11:30pm by kIM

math
helpp plz
Monday, April 13, 2009 at 8:09pm by rebecca

math helpp! :|
i mean help me with this?? :P
Saturday, November 1, 2008 at 7:08pm by jazz

math helpp! :|
does anyone know the answer for this?
Saturday, November 1, 2008 at 7:08pm by jazz

math helpp - incomplete
.
Wednesday, January 16, 2013 at 8:14pm by Ms. Sue

Math
Thank you so much that helps a lot!
Thursday, January 10, 2013 at 10:07pm by HELPP!!!

Algebra 1
I think that you're right too. Thank so much for your help.
Tuesday, October 9, 2012 at 7:37pm by HELPP!!!

calculus--please helpp
thanks so much!
Friday, October 14, 2011 at 1:54pm by krishna

CHEM HELPP!
0.16g MnCl2
Monday, April 12, 2010 at 7:02pm by Kenny

Anatomy
Your subject is not Helpp!
Tuesday, October 20, 2009 at 7:06pm by Ms. Sue

GEO HELPP!
You're welcome, Beeca.
Sunday, January 25, 2009 at 9:32pm by Ms. Sue

english
i think so can u please helpp!
Tuesday, January 6, 2009 at 9:50pm by mel

math helpp! :|
alright thx!! :)
Saturday, November 1, 2008 at 7:08pm by jazz

Chemistry
An unknown salt AS x XH2O was analyzed and found to contain 16.4 percent water. If the anhydrous salt has a formula mass of 183 amu, find the water of crystallization (X) for the hydrate. I have no idea how to figure this out! HELPP PLEASE!!
Sunday, January 23, 2011 at 11:46pm by Mariana

Algebra helpp i am going to fail
Thankyou
Tuesday, February 28, 2012 at 12:28am by Cassie

Geometry HELPP
I will be happy to critique your thinking.
Saturday, November 7, 2009 at 2:59pm by bobpursley

English
is Premonition an example of fate? ^^ thats a movie
Monday, October 29, 2007 at 9:12pm by helpp me!

math helpp please!!!
more info?
Friday, September 21, 2007 at 7:58pm by Tyler

chemistry... HELPP
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...
Tuesday, October 16, 2012 at 9:38pm by LS

chemistry... HELPP
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 ...
Sunday, October 7, 2012 at 1:23pm by DrBob222

GEO HELPP!
i think autombile is a good one
Sunday, January 25, 2009 at 9:32pm by Anonymous

english 3
I wanted to check my answers but I guess not. Thanks anyways.
Friday, February 24, 2012 at 6:32pm by helpp

MATH Is there no one who can helpp???????
its a fraction of -9 over 2 x to the power of -3/2... (-9/2)x^-3/2
Wednesday, February 15, 2012 at 2:51pm by Anonymous

Help!
health urgent helpp me please ms. sue!!!!!!
Thursday, January 19, 2012 at 3:02pm by yolanda

chemistry... HELPP
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 ...
Friday, November 30, 2012 at 1:56pm by joane

Algebra 1
What is the slope, m, of the line that contains the points (-12, 16), (-3, 4) and (6,-8)?
Tuesday, October 9, 2012 at 7:37pm by HELPP!!!

math log PLEAseee helpp pretty please!!!
you are THE BESTT!!
Thursday, January 20, 2011 at 1:00pm by Sabrina

7th grade essay writing
thanks for the helpp i finished it
Monday, February 15, 2010 at 3:09pm by peter botros

PLZZZ I NEED HELPP
can I please have some1 help me with this problem
Sunday, February 1, 2009 at 8:46pm by Julie

Chemistryy....PLEASE HELPP HAVE MIDTERMMM
Thank YOu soo mUch
Sunday, October 12, 2008 at 5:55pm by Sara

chemistry... HELPP
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

Math
Solve 2/3(6x+30) = x+5(x+4)-2x and please show me the steps?
Thursday, January 10, 2013 at 11:11pm by HELPP!!!

science
im sorry , thats the question that i have problems with . HELPP , Please !
Tuesday, May 15, 2012 at 8:54am by Remy W

SPANISH PLEAASSEE HELPP (im stuck)!!!!!!!!!!!!!!!!
the last answer is ellos, not este.
Thursday, September 15, 2011 at 9:20pm by cliff

Physics
It says it was incorrect even after I converted to rev/min
Monday, October 17, 2011 at 3:07pm by Helpp

algebra
evaluate the expression n + (-5) for each value of n. n=312 i dont know how to do this..please helpp..
Tuesday, August 31, 2010 at 7:54pm by paloma

geo HELP!!
what are examples of formal economic activities? helpp plz and thanku :)
Thursday, February 26, 2009 at 9:23pm by beecca

Plant Physiology
Okay in understand everything except D....SOMEONE PLEASE HELpp
Friday, February 13, 2009 at 7:14am by Saira

9th grade
find the unit rate 3 tablespoons for 1.5 serving how do u do it??? helpp thanks
Wednesday, November 19, 2008 at 4:48pm by kelly

geography
How do peoples' lives change by living near a mountain?
Wednesday, September 10, 2008 at 7:49pm by LARRY!! HELPP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

math!
how do yuo do lcm i know i did it in like 1st grade but i need helpp!!
Monday, December 10, 2007 at 3:05pm by bailey

chemistry
The reversible reaction n2(g) + 3h2(g)<-> produces ammonia, which is a fertilizer. At quilibrium, a 1-L flask contains 0.15 mol H2, 0.25 mol N2, and 0.10 mol NH3. Calculate K eq for a reverse reaction? Please HELPP!
Monday, March 1, 2010 at 10:36pm by anonymous

Math
If (x, 3) is the solution to the equation 4x+2y=22, then what is the value of x? Can you solve it for me so i can see how you did it? a. 8 b. 6 c. 5 d. 4
Thursday, January 10, 2013 at 10:28pm by HELPP!!!

Algebra2
Helpp? Graphs of functions !! I need to determine if these are odd or even? 1. f(x)=x^5-x 2. f(x)=5 3.f(x)=x^4+2x^3
Wednesday, August 29, 2012 at 2:31pm by Unknown

Geometry HELPP
(-3,-5) and (5,-1) what ordered pair describes the location of the midpoint if the line segment
Saturday, November 7, 2009 at 2:59pm by Anonymous

helpp in physics! so tough!
How did you figure out the higest point I am still struggling eith that.
Tuesday, September 28, 2010 at 11:10pm by Am

simple easy math question PLEASEEE HELPP!!!
is this true? log^2 x = (logx)^2
Thursday, January 6, 2011 at 8:31am by Sabrina

math
evaluate 3 + x for 1 over 2 our teacher never taught us this, and i dont know how to do it
Monday, February 1, 2010 at 7:42pm by helpp!

CHEM HELPP!!!
your answer is pretty cracked out, if you gona help, show your steps and help
Tuesday, March 10, 2009 at 3:38am by Anonymous

the big idea of energy
I seriously dnt get it ...iron and sulphur hwk!!! Helpp!!!
Tuesday, December 5, 2006 at 2:18pm by Strawbeeryyy!!

GEO HELPP!
Yes. Spending money on a sweater and boots are economic activities.
Sunday, January 25, 2009 at 9:32pm by Ms. Sue

Geometry
I need help on the things like tevrey square is a rectangle please helpp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Monday, May 12, 2008 at 6:14am by Nolan

chemistry... HELPP
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

math~ helpp pplease
Thanks and no, it doesn't state whether or not its a parabola, etc. f(3) = 5? isn't x=3 and y=5? also, how is f(-x+1) = 1 :S did you factor out the negative?
Thursday, November 24, 2011 at 1:38am by Jay

math helpp! :|
You can set up a ratio: 5/7 = x/105 Cross multiply and simplify if needed.
Saturday, November 1, 2008 at 7:08pm by Writeacher

chemistry... HELPP
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

Biology
Sponge bob notices that his pal Gary is suffering form slimotosis , which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr.Kelp will...
Monday, September 5, 2011 at 6:12pm by Aja

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