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April 18, 2014

Search: A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 145.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are

Number of results: 69,271

chemistry
A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are ?
Friday, June 25, 2010 at 2:50pm by dude

Chemistry
A solution is made by mixing 25.0 mL of toluene C6H5CH3 d=0867gmL with 135.0 mL of benzene C6H6 d=0874gmL . Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are how would i start this problem?
Monday, April 7, 2008 at 4:53pm by Riley

chemistry
can someone please help me with this? i've been stuck on this one forever... A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are...
Monday, October 4, 2010 at 12:53pm by Anonymous

chemistry
can someone help me with this please? i've been stuck on this one forever... A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are...
Monday, October 4, 2010 at 12:54pm by Anonymous

chemistry
A solution is made by mixing 35.0 mL of toluene C6H5CH3d=0867gmL with 125.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are how do you find the L of SOLUTION
Thursday, June 24, 2010 at 6:35pm by J

chemistry
A solution is made by mixing 35.0 mL of toluene C6H5CH3d=0867gmL with 125.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are so the L of solution is...? 35ml + 125ml and then converting to L??
Thursday, June 24, 2010 at 7:12pm by J

chemistry
A solution is made by mixing 20.0 mL of toluene C6H5CH3d=0.867gmL with 150.0 mL of benzene C6H6d=0.874gmL. Assuming that the volumes add upon mixing, what are the molarity (M) and molality (m) of the toluene
Thursday, April 3, 2008 at 4:53pm by Dora

Chemistry
A solution is made by mixing 20.0 mL of toluene C6H5CH3d=0867gmL with 140.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are?
Saturday, April 5, 2008 at 7:19pm by Sam

Chemistry
A solution is made by mixing 35.0 mL of toluene C6H5CH3d=0867gmL with 125.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are
Sunday, August 2, 2009 at 3:00am by Jay

Chemistry
A solution is made by mixing 35.0 mL of toluene C6H5CH3 d=0867gmL with 125.0 mL of benzene C6H6 D=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are? Find M and m
Thursday, June 26, 2008 at 9:59pm by UN

ap chem
i am stuck on this problem from school A solution is made by mixing 30.0 mL of toluene C6H5CH3d=0.867gmL with 130.0 mL of benzene C6H6d=0.874gmL . Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are
Friday, August 8, 2008 at 3:51pm by ted

chem
A solution is made by mixing 20.0 mL of toluene C6H5CH3d=0867gmL with 150.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are ____M and _____m.
Thursday, August 14, 2008 at 8:52pm by Chem help

Chemistry
A solution is made by mixing 20.0 mL of toluene C6H5CH3d=0867gmL with 140.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are... ______ M and ______ m. I need help. :(
Friday, August 15, 2008 at 5:17pm by ChemistrIEE

Chemistry -- to Dr.Bob
I had posted a while back and still couldn't solve this is there anyway you could show me the steps on how u did this? thank you very much A solution is made by mixing 20.0 mL of toluene C6H5CH3d=0.867gmL with 150.0 mL of benzene C6H6d=0.874gmL. Assuming that the volumes add ...
Saturday, April 5, 2008 at 8:05pm by Dora

Repost for Dora
solution is made by mixing 20.0 mL of toluene C6H5CH3d=0.867gmL with 150.0 mL of benzene C6H6d=0.874gmL. Assuming that the volumes add upon mixing, what are the molarity (M) and molality (m) of the toluene For Further Reading * chemistry - DrBob222, Thursday, April 3, 2008 at...
Friday, April 4, 2008 at 7:47pm by DrBob222

chemistry
0.867 g/mol= x/ 20 ml x= 17.94 gYou made a math error here. I get 17.34 g 0.874 g/mol= x/ 150 mil x= 131.1 gThis is OK. toluene 17.904 g x 1 m/ 92.14 g/ mol= .194 m This should be 17.34 g toluene. And that divided by 92.14 = 0.188 mols toluene. Then 0.188/kg solvent = 0.188/0....
Thursday, April 3, 2008 at 4:53pm by DrBob222

Chemistry
If the freezing point of pure toluene is -95.15 oC and its freezing point depression constant is -8.38 oC/molal, what is the freezing point of a solution made by dissolving 39.338g of anthracene (C14H10) in 150.0mL of toluene? (Density of toluene = 0.8669g/mL)
Wednesday, January 30, 2013 at 9:34pm by Jaden

College Chemistry
Nicole--You persist in using symbols and defining them. IF 32.85 is grams of the solid (I don't what the garbage is) and 0.864 is density in g/mL, then 58.56 g = mass solid + mass toluene 32.85 g = mass solid _________ 25.71 g = mass toluene used. volume of toluene = mass/...
Monday, January 24, 2011 at 9:30pm by DrBob222

Chemistry
A buffer is made by mixing 52.1 mL of 0.122 M acetic acid with 46.1 mL of 0.182 M sodium acetate. Calculate the pH of this solution at 25 degrees C after the addition of 5.82 mL of 0.125 M NaOH
Saturday, May 1, 2010 at 12:48pm by Chemistry Problem

Chemistry -- to Dr.Bob
Dora--I scrolled back yesterday and noticed you had added some material but I also noticed a math error. I posted a correction but I don't know if you saw it or not. Here is the way you do the problem. Check my arithmetic very carefully. mass 20.0 mL toluene = 20.0 x 0.867 = ...
Saturday, April 5, 2008 at 8:05pm by DrBob222

chemistry
What is the percent by volume (% v/v) of a solution made by mixing 12 ml of ethanol (C2H5OH) with 48 ml of water? b) Assuming the density of ethanol is 0.789g/ml, what is the molarity of this solution?
Tuesday, March 19, 2013 at 4:52pm by ben

Chem 2
A solution is made by mixing 47.0 mL of ethanol, C2H6O, and 53.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 C?
Saturday, July 14, 2012 at 5:43pm by Pagye

Chemistry II
A solution is made by mixing 38.0 mL of ethanol, C2H6O, and 62.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 C?
Tuesday, July 17, 2012 at 8:47pm by Sam

Chemistry. Help please
Calculate the pH of a buffer solution made by mixing 174 mL of a 1.68M trimethylamine (CH3)3N solution with 250 mL of a 1.08M trimethylammonia chloride, (CH3)3NHCl solution.
Thursday, December 9, 2010 at 9:14pm by Stephanie

chemistry
2) Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). Find the molality of toluene in a solution that contains 25.8 g of toluene and 135 g of benzene.
Monday, October 15, 2012 at 4:33pm by Mike

Algebra
A saline solution was made by mixing 11 ml of a 36% saline solution and 6 ml of a 53 % saline solution. How do I find the consentration of the new mixture?
Monday, October 18, 2010 at 5:49pm by Hannah

Chemistry-102
what is the ph solution obtained by mixing 25.00 ml of 0.250 ml HCl and 25.00ml of 0.125M NaOH
Wednesday, March 23, 2011 at 10:58pm by Christian

Chemistry
A solution is made by mixing 37.0 mL of ethanol, C2H6O, and 63.0 mL of water.? Assuming ideal behavior, what is the vapor pressure of the solution at 20 C? ethanol: 0.789 g/mL 43.9 torr water : 0.998 g/mL 17.5 torr
Saturday, March 2, 2013 at 1:05pm by Dee

Chemistry
Acetic acid (HOAc) is a weak acid with a Ka= 1.8 X 10^-5 and sodium hydroxide (NaOH) is a strong base. What is the pH of a solution made by mixing 75.0 ml of a 0.160 M solution NaOH and 25.0 ml of a 0.640 M solution of HOAc? I got a pH of 5.22, but I am not sure if this is ...
Tuesday, May 12, 2009 at 9:53pm by Chelsea

Chemistry
Calculate the pH of the following buffer solutions: a) a solution made by dissolving 2.733g KH2PO4 and 4.508g K2HPO4 in water to give 250 ml of solution. b)a solution made by mixing 35.00 ml 0.24 M C6H5NH2 with 15.00 ml 0.19 M C6H5NH3CL. The base dissociation constant Kb is 4....
Wednesday, February 8, 2012 at 6:17pm by Karie

Chemistry
There was a problem posted last night that used 150 mL benzene. Check to make sure that is not a typo. Determine mass 20.0 mL toluene. Use density to do that. Then determine mols of toluene in that 20 mL. Determine mass of benzene using density. molality toluene = mols toluene...
Saturday, April 5, 2008 at 7:19pm by DBob222

Chem
what is the pH of solution made by mixing 100 mL of 0.030M HCL with 200 mL water?
Sunday, September 16, 2012 at 2:53pm by John

Chem II
Calculate the pH of the solution made by mixing 35.0 mL of 0.500 M ca(OH)2 with 45.0 mL of 0.710 MHCl
Wednesday, April 16, 2008 at 8:30am by Ken

Chemistry I
If 30.0 mL of 0.2 M nitric acid and 30.0 mL of 0.25 M solution of sodium hydroxide are mixed, what is the molarity of sodium nitrate? Assume that total volume of the solution after mixing is equal 60.0 mL.
Thursday, March 14, 2013 at 11:05am by Therese

chemistry
what is the molarity of the solution obtained by mixing 25.0 ml of a 3.00 M methyl alcohol solution with 225.0 ml of a 0.100 M methyl alcohol solution?
Thursday, December 13, 2012 at 11:45pm by mitch

Chemistry
total mass: 47.27g solid mass: 22.19g so, toluene mass: 25.08g toluene density is .864g/ml, so toluene volume: 25.08g / 0.864g/ml = 29.03ml so, solid volume: 20.97ml solid density: 22.19g/20.97ml = 1.058g/ml
Monday, August 20, 2012 at 6:09pm by Steve

ap chemistry!! help!!
a student measured heat of neutralization on a styrofoam coffee cup calorimeter by mixing 25.0 ml of 1.0 M NaOH solution with 25.0ml of 1.0 M HCL solution what is the balance equation and the limiting reactant
Tuesday, January 9, 2007 at 3:44pm by kenyata

Chemistry
Calculate the pH, to one decimal place, of the solution made by mixing 21.0 mL of 0.33 M HNO3 with 121.0 mL of 0.32 M formic acid (HCOOH)
Thursday, October 7, 2010 at 6:28pm by Megan

biochemistry
How do you calculate the PH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of 1.0 M sodium lactate?
Saturday, September 18, 2010 at 11:47pm by nicki

Chemistry
Calculate the pH of a solution that is made by mixing 10.00 mL of 0.2500 M HCl with 35.00 mL of .1500 M HNO3 and diluting the mixture to a total volume of 100.00 mL
Thursday, May 5, 2011 at 3:58pm by Dan

Chemistry
1.What mass of NaOH(s) must be added to 300 mL of HCl 0.25 M in order to completely neutralize this acid? 2.During a lab, you mix 2 solutions: a 100 ml solution containing 0.40 g of NaOH and a 100 mL solution containing 0.73 g of HCl. What is the concentration of H+ ions in ...
Thursday, May 9, 2013 at 2:22pm by Talulla

Chemistry
The pH of a solution prepared by mixing 325 mL of 0.25 M NaOH and 675 mL of 0.20 M HClO3 is 6.50. Solve for Ka.
Wednesday, January 29, 2014 at 2:49am by Snoop Lion

chemistry
I don't see a decimal in the density tabulations. That may be your first problem. The density of toluene is 0.867 that of benzene is 0.879 g/mL. First, let's do some housekeeping. mass toluene = 25.0 mL x 0.867 g/mL = 21.675 g moles toluene = 21.675/92.14 = 0.235 moles. mass ...
Monday, October 4, 2010 at 12:54pm by DrBob222

Chemistry
Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). the molality of toluene in a solution that contains 26.2 g of toluene and 132 g of benzene. Calculate the molar fraction of toluene and ...
Thursday, March 29, 2012 at 5:53pm by MJ

College Chemistry
A 150.0 mL sample of a 1.50 M solution of CuSO4 is mixed with a 150.0 mL sample of 3.00 M KOH in a coffee cup calorimeter. The temperature of both solutions and the calorimeter was 25.2C before mixing and 31.3C after mixing. The heat capacity of the calorimeter is 24.2 J/K...
Wednesday, February 19, 2014 at 7:43pm by Esther

Chemistry
A solution is made by mixing 42.0 mL of ethanol, C2H6O, and 58.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 C in torr? Values at 20C ethanol density: 0.789 g/mL & vapor pressure (torr): 43.9 torr water: denisty: 0.998 g/mL & 17.5 ...
Sunday, February 19, 2012 at 6:45pm by Joy

Chemistry
A 150.0 mL sample of a 1.50 M solution of CuSO4 is mixed with a 150.0 mL sample of 3.00 M KOH in a coffee cup calorimeter. The temperature of both solutions and the calorimeter was 25.2C before mixing and 31.3C after mixing. The heat capacity of the calorimeter is 24.2 J/K. ...
Tuesday, February 18, 2014 at 9:43am by Bob

chemistry
Calculate ΔG at 25C for the precipitation of lead(II) chloride from mixing 100. mL of 0.025 M lead(II) nitrate solution with 100. mL of 0.15 M sodium chloride solution. The ΔG for the reaction at 25C = −27.36 kJ/mol. (Hint: write out reaction equation also...
Tuesday, October 2, 2012 at 6:39pm by Ashley

chemistry
Calculate the pH of a solution prepared by mixing 25.0 mL of 0.60 M HC2H3O2 and 15.0 mL of 0.60 M NaC2H3O2?
Thursday, May 6, 2010 at 3:57pm by Julie

chemistry
Calculate the pH of a solution prepared by mixing 25.0 mL of 0.60 M HC2H3O2 and 15.0 mL of 0.60 M NaOH?
Thursday, May 6, 2010 at 3:58pm by Julie

chemistry
a solution is made by mixing 14.5g of NaOH and 72.0 mL of 0.250 M HNO3
Friday, March 4, 2011 at 10:47pm by Anonymous

Chemistry
A solution is made by mixing 90.6 g of magnesium sulfate heptahydrate with 2320.0 g of water. 690.00 mL of the solution has a mass of 745.20 g. What is the molarity of the magnesium sulfate solution?
Wednesday, September 11, 2013 at 8:59pm by Jade

Chemistry
Phenol (abbreviated HOPh) is a weak acid with a Ka= 1.29 X 10^-10. What is the pH of a mixture made by mixing 100.0 ml of a 0.700 M solution of phenol with 70.0 ml of a 1.00 M solution of NaOH? Help please and please show work... I'm so confused.
Tuesday, May 12, 2009 at 8:21pm by Chelsea

Chemistry
What is the vapor pressure in Torr above a solution prepared by mixing 66.73g of benzene C6H6 with 63.26g toluene C6H5CH3 at 20 Celsius. The vapor pressure of pure benzene and toluene at 20celsius are 75 and 22 torr respectively. These compounds form nearly ideal solutions ...
Saturday, April 23, 2011 at 5:07pm by Jude

Organic Chem
Nowhere in your problem do you say what the volume is for the solubility. In most cases it is quoted as 100 mL; therefore, I ASSUME that 1.5 g @ 20 C MEANS 1.5 grams A will dissolve in 100 mL toluene at 20 C, etc. 20 g sample is 95%A or 20 x 0.95 = 19 grams A. 5% B or 20 x 0....
Tuesday, October 5, 2010 at 9:08pm by DrBob222

Chemistry
Concentration of OH- left in a solution made by mixing 16.0 g of NaOH and 80.0 mL of 0.170M HNO3?
Monday, October 25, 2010 at 6:58pm by Taylor

chemistry
Use density to determine mass toluene, then convert mass to mols toluene. Use density to determine mass 150.0 mL benzene, Then molality toluene = #mols/kg solvent. molarity = mols/L solution. Post your work if you get stuck.
Thursday, April 3, 2008 at 4:53pm by DrBob222

Chemistry
What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.030 M CH3CO2Na? Assume that the volume of the solutions are additive and that a = 1.8 10-5 for CH3CO2H.
Friday, April 19, 2013 at 12:39am by Veronica

Chemistry
Could someone please help me with these two questions. I am having trouble. 1. What is the molarity of a solution if 48.0 mL of a 0.220 M solution is required to neutralize a 25.0-mL sample of the solution? 2. The mixing of which pair of reactants will result in a ...
Sunday, September 19, 2010 at 11:32am by Sarie

chemistry
1. If a gaseous sample contains 73% N2 by volume, what is the solubility of N2 in water at 25C and 1.0 atm (kH in H2O at 25C = 7.0 10-4 mol/Latm)? 2. Calculate the vapor pressure of a solution of 0.60 mol of cholesterol in 4.5 mol of toluene at 32C. Pure toluene has a vapor...
Monday, January 31, 2011 at 3:49pm by Ashley

Organic Chem
I can't read your question and make sense of it. This is how I interpret it. How to make a 70:30 mixture of toluene and hexane (and I assume that is volume:volume). How about 70 mL toluene + 30 mL hexane (assume volumes are additive) = 100 mL so triple that to use 3*70=210 mL ...
Tuesday, September 28, 2010 at 6:57pm by DrBob222

College Chem
How many liters of carbon dioxide at 20 oC and 750 torr are produced when one gallon of toluene is burned? C7H8 + 9O2 ==> 7CO2 + 4H2O 1 gallon toluene = about 3,785 mL density = about 0.867 g/mL mass toluene = 3785 mL x 0.867 g/mL = 3282 grams. moles toluene = grams/molar ...
Monday, October 4, 2010 at 12:39am by D

chemistry
Indicate the concentration of each ion present in the solution formed by mixing the following. (Assume that the volumes are additive.) (a) 50 mL of 0.100 M HCl and 10.0 mL of 0.510 M HCl (b) 15.0 mL of 0.309 M Na2SO4 and 38.6 mL of 0.200 M KCl (c) 3.50 g of NaCl in 40.2 mL of ...
Wednesday, September 21, 2011 at 4:09pm by Anonymous

chemistry
Determine the molarity of nitrate ions in a solution prepared by mixing 25.0 mL of 0.50 M Fe(NO3)3 and 35.0 mL of 1.00 M Mg(NO3)2 Please explain fully do not know where to start?
Monday, December 13, 2010 at 3:32pm by Lisa

Chemistry
1 gallon toluene = about 3,785 mL density = about 0.867 g/mL mass toluene = 3785 mL x 0.867 g/mL = 3282 grams. C7H8 + 9O2 ==> 7CO2 + 4H2O moles toluene = grams/molar mass = 3282/92 = about 36 moles. From the equation above, 1 mole C7H8 will produce 7 moles CO2; therefore, ...
Sunday, October 3, 2010 at 1:42pm by Dan

College Chemistry
A 32.85-{\rm g} sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 46.00 mL. The solid and toluene together weigh 58.56 g. The density of toluene at the temperature of...
Monday, January 24, 2011 at 9:30pm by Nicole

Chemistry
a 25.0 mL sample of .050 M solution of aqueous trimethylamine is titrated with a .063 M solution of HCl. calculate pH the solution after 10.0 mL, 20.0 mL, 30.0 mL of acid have been added. pKb of (CH3)_3_N= 4.19 at 25 degrees C
Sunday, November 11, 2012 at 6:29am by Elaine

Chemistry
Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). Find the molality of toluene in a solution that contains 26.2 g of toluene and 132 g of benzene.
Thursday, March 29, 2012 at 5:52pm by MJ

Biochem
A buffer solution is prepared by mixing 200 mL of 0.2 M salt solution and 400 mL of a 0.2 M acid solution. What is the concentration of the resulting buffer? ~what is the pKa?
Monday, November 19, 2012 at 8:17pm by Dr. Nick

College Chem
C7H8 + 9O2 ==> 7CO2 + 4H2O 1 gallon toluene = about 3,785 mL density = about 0.867 g/mL mass toluene = 3785 mL x 0.867 g/mL = 3282 grams. moles toluene = grams/molar mass = 3282/92 = about 36 moles. From the equation above, 1 mole C7H8 will produce 7 moles CO2; therefore, ...
Sunday, October 3, 2010 at 4:41pm by DrBob222

Chemistry
A solution is prepared by mixing 8 mL of .2 M Fe(NO3)3, 10mL of .001 M NaSCN, and 7 mL of .1 M HNO3 a. calculate the concentration of Fe3+ in the solution b. calculate the SCN- in the solution
Sunday, February 20, 2011 at 9:56pm by Anonymous

Chemistry
A solution is made by mixing 90.6 g of magnesium sulfate heptahydrate with 2320.0 g of water. 690.00 mL of the solution has a mass of 745.20 g. 1. What is the molarity of the magnesium sulfate solution? 2. What is the molarity of the magnesium ion? 3. What is the molality of ...
Wednesday, September 11, 2013 at 10:28pm by J

chemistry/ molarity, molality
A solution is made by mixing 20.0 mL of C6H5CH3, d=.867g/mL, with 140.0mL of C6H6, d=.874g/mL. assuming that the volumes add upon mixing, what is the molarity? what is the molality? i know that molarity= moles/L and molality= moles sol/kg solvent... but im not sure which ...
Tuesday, April 3, 2007 at 12:55am by christine

Chemistry
determine the pH of a solution made by mixing 8 ml of 1.10M acetic acid and 2ml 0.9 M sodium acetate solution. pKa for acetic acid CH3COOH is 4.745. Can someone please explain
Sunday, June 12, 2011 at 11:01pm by Max

chemistry
A solution is prepared by mixing 5.00 grams of compound Z (molar mass 15.00 g/mol) in 100.0 ml of water. The density of the solution is 1.09 g/ml. Calculate the molarity of the solution
Thursday, January 27, 2011 at 1:57am by Angela

Chemistry
A solution is made by mixing 30.0 mL of ethanol, C2H6O, and 70.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 C? I got an answer of 15.45 torr and it marked me incorrect and said "Your answer is the the partial vapor pressure ...
Saturday, February 18, 2012 at 10:24pm by Lauren

Biochemistry
what will be the pH of a buffer prepared by mixing 600 ml of 0.1M sodium acetate solution and 40 ml of 0.2M acetic acid solution
Wednesday, May 25, 2011 at 3:45pm by Lisa

Chemistry
A solution is made by mixing exactly 500 mL of 0.178 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium concentrations of H+, CH3COOH, CH3COO-, OH-, and Na+.
Monday, May 2, 2011 at 3:20pm by Martina

Chemistry
How do I find the total vapor pressure of a solution of benzene (mole fraction 0.350, vapor pressure at 25 degrees = 12.7 kPa) in toluene at 25 degrees. (vapor pressure of toluene at 25 degrees = 3.79 kPa)
Wednesday, December 19, 2007 at 5:43am by Jaden

Chemistry
i have no idea how to set this problem up! please help! A 22.19-g sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 50.0 mL. The solid and toluene together weigh 47....
Monday, August 20, 2012 at 6:09pm by Hannah

AP Chemistry
A solution is made by mixing exactly 500 mL of 0.167 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium concentrations of H+, CH3COOH, CH3COO-, OH-, and Na+.
Sunday, February 16, 2014 at 1:55pm by Allison

Chemistry
25 mL 0.1 M acetic acid is titrated with 0.1 M NaOH. Calculate the pH after the addition of 0.0 mL, 1.0 ml, 2.5 mL, 4.0 mL, 7.0 mL, 10.5 mL, 15.0 mL, 17.0 mL, 20.0 mL, 22.0 mL, 23.0 mL, 23.5 mL, 24.0 mL, 24.25 mL, 24.5 mL, 24.75 mL, 25.0 mL, 25.25 mL, 25.5 mL, 25.75 mL, 26.0 ...
Monday, April 22, 2013 at 4:34am by smartkid <33

Chemistry
Pure acetic acid, known as glacial acetic acid, is a liquid with a density of 1.049 g/mL at 25C. Calculate the molarity of a solution of acetic acid made by dissolving 10.00 mL of glacial acetic acid at 25C in enough water to make 150.0 mL of solution.
Wednesday, February 17, 2010 at 6:42pm by Mindy

Analytical chemistry help!
Calculate the pH of a solution made by mixing 50.00 mL of 0.100 M NaCN (Ka of HCN = 6.2 x 10-10) with a) 4.20 mL of 0.438 M HClO4 and b) 11.82 mL of 0.438 M HClO4. What is the pH at the equivalence point with 0.438 M HClO4?
Saturday, November 26, 2011 at 4:37pm by Remy

Chem
calculate pH of the buffer solution prepared by mixing 10 mL of 1.5 M HCl with 100 mL of 0.1 M K2CO3 solution. For H2CO3: Ka1= 4.46 e^-7, Ka2= 4.69e^-11
Wednesday, November 12, 2008 at 10:52pm by Sam

chemistry
A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0 mL, and 25.00 mL of this solution were then diluted to 1.000 103 mL. The concentration of the final solution is 0.00421 M. Calculate the concentration of the original solution.
Monday, October 1, 2012 at 6:11pm by Aiden

chemistry
A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0 mL, and 25.00 mL of this solution were then diluted to 1.000 103 mL. The concentration of the final solution is 0.00421 M. Calculate the concentration of the original solution.
Monday, October 1, 2012 at 7:00pm by Tim

chemistry
Consider a solution made by mixing 500.0 mL of 0.04182 M Na2HAsO4 with 500.0 mL of 0.03645 M NaOH. Complete the mass balance expressions below for Na and arsenate species in the final solution. There are 4 arsenate species, but I only got three of them. I am unsure of what the...
Saturday, March 23, 2013 at 12:34am by Jackie

college chemistry
Calculate the pH of a solution prepared by mixing 150.mL of 0.174 molal aqueous HF (density=1.10g/mL) with 37.5 g of an aqueous solution that is 1.3% NaOH by mass (density=1.02 g/mL)
Thursday, March 24, 2011 at 8:32pm by does anyone get this???

Chemistry
What is the pH of a solution prepared by mixing 50.0 mL of 0.010 mol/L HCl(aq) and 50.0 mL of 0.010 Ca(OH)2(aq)? Assume the temperature is 25 degrees celsius, where Kw = 1.0 x 10^-14 at 25 degrees celsius.
Wednesday, May 18, 2011 at 7:34pm by iYeon

chemistry
I. 1) Calculate the pH of the following solution: 0.1 M HF + 0.2 M NaCN Given: pKa for: HF/F- = 3.2 HCN/CN-= 9.4 2) Calculate the pH of the solution that results upon mixing 20.0 mL of 0.2000 M HCI with 25.0 mL of: a) distilled water c) 0.13 MNaOH e) 0.23 MNaOH b) 0.13 M AgN03
Monday, February 18, 2013 at 2:10pm by abd

quantitative chemistry
Consider a solution made by mixing 500.0 mL of 0.04182 M Na2HAsO4 with 500.0 mL of 0.03645 M NaOH. Complete the mass balance expressions below for Na and arsenate species in the final solution. There are 4 arsenate species, but I only got three of them. I am unsure of what the...
Friday, March 22, 2013 at 2:23pm by Jackie

College Chemistry
Calculate the pH of a solution prepared by mixing 250.mL of 0.174 molal aqueous HF (density=1.10g/mL) with 38.7g of an aqueous solution that is 1.50% NaOH by mass (density= 1.02g/mL).
Wednesday, March 23, 2011 at 9:12pm by Anonymous

Chemistry
A solution is made by dissolving 18.9 g of HCl in enough water to make 716 mL of solution. Calculate the pH of the solution at 25 degrees C
Wednesday, December 5, 2012 at 4:30pm by Kristen

Chemistry
A solution is made by dissolving 18.9 g of HCl in enough water to make 716 mL of solution. Calculate the pH of the solution at 25 degrees C
Wednesday, December 5, 2012 at 10:35pm by Kristen

Chemistry
A solution is prepared by mixing 13.00 ml of .0021 M aqueous Hg2(NO3)2 with 25 ml of .015M HCL. Assme that volumes are additive. a) Will precipitation occur? b) Calculate [HG2 2+], [CL-], and [NO3] after equilibrium is established.
Thursday, April 8, 2010 at 1:32pm by Anmol

chemistry
A potassium iodide solution is made by mixing 0.520 g of potassium iodide with 120.0 mL of water. Calculate the molality of potassium iodide. Assume that the density of water is 1.000 g/mL
Thursday, April 19, 2012 at 2:38am by hereyago

Chemistry
How accurately is the acetic acid solution to be made? mL x M = mL x M 80 mL x 0.1M = mL x 6.0M mL = (80*0.1/6.0) = 1.33 Technically, the way you do it is to dispense 1.33 mL of the stock solution into an 80 mL volumetric flask, then make the solution to the mark with ...
Thursday, February 24, 2011 at 12:48am by DrBob222

school
What is the pH of 0.1 M formic acid solution? Ka=1.7e10-4? What is the pH value of buffer prepared by adding 60 ml of 0.1 M CH3COOH to 40 ml of a solution of 0.1 M CH3COONa? What is the pH value of an acetate buffer (pK=4.76) prepared by adding 20 ml of 1 M HCl to 100 ml of a...
Sunday, December 11, 2011 at 7:58am by alshammari

Chemistry
A solution is made by mixing 12.0 g of NaOH and 75.0 ml of 0.200 M HNO3 a) write a balanced equation for the reaction that occurs between the solutes. b) Caclulate the concentration of each ion remaining in solution. c) Is the resultant solution acidic or basic? O.k. I am ...
Tuesday, September 18, 2007 at 4:05pm by Sara

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