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April 19, 2014

Search: calculate the molarity ofthe NaOH solution: mass of KHP 2.484 g;

Number of results: 77,163

Chemistry
25.0 mL of a NaCl solution (concentration unknown) was found to react with 20 drops of the chloride test solution from the PU Chloride Test Kit. Calculate the mass of NaCl (in grams) in this solution. Calculate the mass of NaCl required to prepare 0.250 L of a NaCl solution ...
Sunday, October 3, 2010 at 11:17pm by kt

Chemistry
In what units? molarity? molality, percent by mass? percent w/v? For molarity, M = moles/L solution. So M = 1 mole/2 L = 0.5 M.
Tuesday, June 1, 2010 at 8:34am by DrBob222

Chemistry
The molarity of amonia in aqueous solution is 11.8 mole/dmc calculate the amount of fraction of amonia in solution density of solution is 0.916 g/cc
Saturday, August 10, 2013 at 1:35am by Aman

chemistry
A sample of aluminum sulfate 18-hydrate, Al2(SO4)3 18 H2O, containing 157.0 mg is dissolved in 1.000 L of solution. Calculate (a) molarity of Al2(SO4)3 (b) molarity of SO42- (c) molality of Al2(SO4)3, assuming that the density of the solution is 1.00 g/mL
Tuesday, September 20, 2011 at 5:01pm by Corinthia

chemistry
When 10.0 mL of 0.012 M pb(NO3)2 is mixed with 10.0 mL of 0.030 M KI, a yellow precipitate of PbI2(s) forms. a)Calculate the molarity of [Pb^2+] b)Calculate the initial molarity of [I^-] c)On measuring the equilibrium concentrations of [I^-] it came out to be 8.0 x 10^-3 M. ...
Sunday, August 15, 2010 at 2:37pm by Anonymous

SCIENCE
when 10.0 ml of .012 M PbNO32 is mixed with 10.0 ml of .030 M KI, a yellow precipitate of PbI2 forms. calculate the initial molarity of Pb+2 calculate the initial molarity of I- On measuring the equilibrium concentration of I-, it came out to be 8.0 x 10^-3 M. Calculate the ...
Friday, March 30, 2012 at 12:26pm by dfdf

Chem
1. If 36.23 mL of potassium permanganate solution is required to titrate 1.041 g of FAS (FeSO4(NH4)2SO4 * 6 H2O, molar mass = 342.0 g), calculate the molarity of KMnO4.
Monday, March 10, 2008 at 11:33pm by Chris

Chemistry
An 8.00 mass % aqueous solution of ammonia has a density of 0.9651g/ml. Calculate the molality, molarity, and mole fraction of NH3. This question seems simple but I cannot seem to remember how to do this. Help please?
Wednesday, December 14, 2011 at 1:04am by ALISON

Chemistry
7.0 ml of 6.0 M NaOH are diluted with water to a volume of 400 ml. You are asked to find the molarity of the resulting solution. The total number of moles of NaOH is not changed on dilution. Calulate the molarity. Work: (6)(.007)=(x)(.4) x=.105M Thanks for showing your work. I...
Thursday, April 19, 2007 at 8:29pm by Anonymous

Chemistry
I will assume that this is a titration problem. You know the mass of the KHC8H4O4 (potssium hydrogen phthalate) and you titrated that mass with NaOH. mols phthalate = grams/molar mass. Since the equation is 1:1 (1 mol phthalate to 1 mol NaOH) the mols NaOH = mols phthalate ...
Sunday, October 7, 2012 at 12:21am by DrBob222

chem. molarity
I will assume when you say molarity of the benzene that you mean the molarity of the solution (which is benzene with the solution dissolved in it). mols N2H4CO = grams/molar mass = 0.08333 mol. molality = moles/kg solvent = 0.08333/0.1 kg solvent = 0.8333 m Not you convert 0....
Monday, January 10, 2011 at 9:17pm by DrBob222

Chemistry
What is the molarity of a solution containing 40 grams of NaOH in 100 ml of soution
Wednesday, July 13, 2011 at 1:24pm by corinna

chem
Did you get your KHP/Ca(OH)2 problem solved? I figures the problem to be you had not listed the mass KHP and you were calculating M Ca(OH)2.
Thursday, July 23, 2009 at 10:54pm by DrBob222

chemistry
The last question on my assignment is to find the % of acetic acid in the vinegar. But their was another previous lab that we did do determine the molarity of NaOH which was .0307. So I started from the point where I took 10 mLs of diluted solution and 2 drops of indicator ...
Friday, June 12, 2009 at 1:51pm by Gweedo8

Chemisty
A 25-mL sample of 0.160M solution of NaOH is titrated with 17 mL of an unknown solution of H2SO4. What is the molarity of the sulfuric acid solution? A. 0.004M H2SO4 B. 0.235M H2SO4 C. 0.117M H2SO4 D. 0.002M H2SO4
Tuesday, February 18, 2014 at 5:52pm by Elizabeth

chemistry
if I add water to 100.0 mL of a 0.15 M NaOH solution until the final volume is 150.0 mL what will the molarity of the diluted solution be? If I set this up properly I believe it is 0.10 M.....am I correct?
Sunday, April 3, 2011 at 10:47am by carla

Chemistry
Commercial vinegar was titrated with NaOH solution to determine the content of acetic acid, HC2H3O2. For 20.0 milliliters of the vinegar 26.7 milliliters of 0.600-molar NaOH solution was required. What was the concentration of acetic acid in the vinegar if no other acid was ...
Wednesday, May 23, 2007 at 11:38pm by Sarah

chemistry
Calculate the molarity of a solution made by diluting 0.200 L of 1.00M HCl solution to a volume of 1.00 L
Friday, November 12, 2010 at 7:34am by Liza

chem. 7
a 20% solution of H2SO4 has a density of 1.14 g/mL. calculate the molarity, normality and molality of the solution.
Friday, December 3, 2010 at 7:59am by Anonymous

Chemistry 2
An aqueous solution of CuSO4 has a density of 1.3g/ml and is 1.16 molal. Calculate the Molarity of this solution.
Friday, July 15, 2011 at 10:15pm by Kelci

science
Calculate the molarity of a solution that contains 0.175 mol ZnCl2 in exactly 136 mL of solution.
Wednesday, May 2, 2012 at 7:13pm by mollye

chemistry
a 20*/* phosphoric acid solution has a density of 1.14g/ml.calculate the molality and molarity of the solution.
Monday, September 3, 2012 at 11:52am by logeshwari

Physical Sciences
I have a project practical investigation to do and I have no idea how to go about with it. The problem is: Calculate the mass of sodium hydroxide used to prepare a 0,5M NaOH solution in a 250ml volumetric flask. Determine the concentration of the acetic acid solution used (...
Friday, August 10, 2012 at 11:52am by Cindy

Chemistry
25.00 mL of a solution of oxalic acid are titrated with 0.2586 m NaOH (aq). The stoichiometric eend point is reached when 43.42 mL of the solution of base is added. What is the molarity of the oxalic acid solution? Oxalic acid reacts with sodium hydroxide as shown: H2C2O4(aq...
Saturday, December 1, 2012 at 10:13pm by ANONYMOUS

Calculus
y=7x and y=x√(484-x^2) intersect at x=0,√435 By symmetry, the area is 2∫[0,√435] x√(484-x^2)-7x dx = 2 (1/6 (x^2-484)(2√(484-x^2) - 21)) [0,√435] = 3825
Tuesday, July 9, 2013 at 9:02am by Steve

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???

gen chem
a 10 ml vinegar sample was completely neutralized by 22.5 0.2M NaOH solution . calculate the molarity and percent acetic acid in vinegar I keep getting 2.7% acetic acid is this correct? my friend got 27% and if I am wrong where do you think I messed up?
Sunday, November 25, 2012 at 6:16pm by shannan

chemistry
and its titration of KHP and NaOH.
Wednesday, January 9, 2013 at 12:28am by Riana

chemistry
K2HPO4 + NaOH ==> K2NaPO4 + H2O mols NaOH = M x L = ? Using the coefficients in the balanced equation convert mols NaOH to mols K2HPO4. Now grams K2HPO4 = mols x molar mass and % K2HPO4 = (grams K2HPO4/mass sample)*100 = ? For #2, plug in 0.1080 for M and 0.02340 for L and ...
Tuesday, December 3, 2013 at 6:32pm by DrBob222

Chemistry
delta H for 2 mols is -484 kJ. So delta H for 1 mol is what? -484/2 = ?? And a mol of H2 has a mass of 2 grams, so what is delta H for 1 gram?
Tuesday, October 30, 2007 at 11:33pm by DrBob222

chemistry
calculate the molality of one molarity solution of sodium nitrare. the density of solution is 1.25g cm cube.
Monday, June 20, 2011 at 11:24pm by joyti

chemistry
calculate the molality of one molarity solution of sodium nitrare. the density of solution is 1.25g cm cube.
Monday, June 20, 2011 at 11:25pm by joyti

chem
Calculate the molarity of a solution made by dissolving 0.150 in enough water to form exactly 730 of solution
Wednesday, April 18, 2012 at 9:38pm by joe

Science
Calculate the molarity of the following solution: 7.48g of calcium chloride (CaCl2) in 215 mL of aquous solution.
Friday, October 19, 2012 at 2:30pm by Emily

chemistry
25.0g of 5.0% (by mass) acetic acid solution are titrated with 0.300 M NaOH. What volume of NaOH will be needed to neutralize this sample?
Friday, May 28, 2010 at 8:38pm by Cynthia

chemistry
An aqueous solution solution of sodium borate is sometimes used to to fire-proof wood. a. what is the molarity of 2.50 L of solution that contains 1.85 moles of sodium borate? M = mols/L b. what is the molarity of 45.0 L of solution that contains 6.78 kg of sodium borate? ...
Sunday, April 7, 2013 at 11:24pm by DrBob222

Chemistry
10. When a 5.00 mL sample of vinegar is titrated, 44.5 mLof 0.100 M NaOH solution is required to reach the end point. What is the concentration of vinegar in moles per liter of solution (molarity, M)?
Sunday, November 25, 2012 at 7:23pm by Anonymous

Chemistry
So far so good; however, you didn't include the volume of NaOH required in the titration. M(NaOH) x mL(NaOH) = M(vinegar) x mL(vinegar). 0.1250 x mL(NaOH) = M(vinegar) x 4.00 mL Plug in the mL NaOH, whatever it is, and you will have just one unknown which is the molarity of ...
Wednesday, July 23, 2008 at 10:44pm by DrBob222

Chemistry
First you want to determine the molarity of the acetic acid in the vinegar. For simplicity, let's call acetic acid (HC2H3O2) HAc where H stands for the H and Ac stands for the C2H3O2^- ion. HAc ==> H^+ + Ac^- Ka = (H^+)(Ac^-)/(HAc). You know pH; use that to calculate H^+ ...
Wednesday, April 15, 2009 at 10:12pm by DrBob222

CHEM
30 g NH3 is how many moles? moles = g/molar mass. 70g H2O is how many kg? 0.070? Then molality = moles/kg solvent. For molarity, you want M = moles/L soln. You have moles already. The solution has a mass of 100 g (70 gH2O + 30 g NH3). Calculate volume from density and mass. ...
Sunday, December 12, 2010 at 11:03am by DrBob222

chemistry
Determine the Molarity of a 125 mL NaOH solution if upon titration with 5.5 mL of an 2.5 M HCl solution, the end point of the titration was reached
Wednesday, June 15, 2011 at 2:07pm by liz

Chem
how do you find the molarity of NaOH if 23.64ml of its solution is needed to neutralize .5632g of KHC8H4O4?
Monday, April 8, 2013 at 7:03am by Mary

Chen=mistry
Sodium metal reacts violently with water to form NaOH and release hydrogen gas. Suppose that 3.00 g of Na reacts completely with 3.00 L of water and the final volume of the system is 3 L. What is the molarity M of the NaOH Solution formed by the reaction?
Wednesday, May 1, 2013 at 8:44am by Janet

chemistry
What is the molarity of an HCl solution if 38.5 mL of it is titrated to the equivalence point with 41.6 mL of a 1.41 M NaOH solution?
Sunday, January 13, 2013 at 9:38pm by Megan

johnson
Work these titration calculations: 1. A titration of 15.0 cm3of household ammonia, NH3, required 38.57 cm3of 0.78M HCl. Calculate the molarity of the ammonia. 2. What volume of 0.5M HNO3is required to neutralize 25 cm3of a 0.2M NaOH solution? 3. Calculate the volume of 0....
Monday, June 18, 2012 at 8:13pm by Lemun

Chemistry
I think the easiest way to solve this problem is to a)determine molarity of the HCl solution. b) apply the dilution formula. a) 1.18g/mL x 1000 mL = mass of 1 L HCl soln. How much is HCl? That will be mass of 1L x 0.36 = ?? g HCl How many moles is that. That will be grams HCl/...
Tuesday, June 7, 2011 at 6:32pm by DrBob222

Chemistry-102
0.025L x 0.25 mol HCl/1L = mol HCl 0.025L x 0.125 mol NaOH/1L = mol NaOH HCl + NaOH --> H2O + NaCl You have twice as many moles of HCl as NaOH, so there will be left over HCl. Find the moles of HCl left over and divide by the combined volumes to get its molarity. That will ...
Wednesday, March 23, 2011 at 10:58pm by Liz

GChem
You're thinking is on the right track for #1. #2 is the same kind of problem. For both, calculate moles of HCl initially, (moles = M x L), then calculate moles NaOH added. In the first case, the excess hydroxide will be in moles, divide that by the total volume and that give ...
Monday, August 10, 2009 at 12:20pm by DrBob222

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

Chemistry105
A 10.00 mL volume of sulfuric acid required 23.65 mL of NaOH solution for complete neutralization. What is the molarity of the acid solution?
Tuesday, December 18, 2012 at 2:27am by Mira

Chemistry
calculate the molar concentration of H3PO4 in the cola sample. Volume of decarbonated cola used 25.00mL, Molarity of NaOH used for titration 0.0100M, and Volume NaOH used at first equivalence point is 14.54mL.
Sunday, April 10, 2011 at 1:26am by Anonymous

chemistry
Calculate the molarity of a phosphoric acid(H3PO3)solution that is 84% by mass phosphoric acid and has a density of 1.87g/mL.?
Saturday, July 2, 2011 at 1:00pm by Lahna

Chemistry
What is the molarity of this dichromate solution? A potassium dichromate solution of an unknown molarity was used to titrate a solution of FeSO4 prepared by dissolving a 0.350g of pure iron wire in H2SO4 and reducing the FE3+ produced to FE2+. 36.24 mL of the dichromate ...
Sunday, December 2, 2012 at 12:10am by ANONYMOUS

CHEMISTRY
How do you get the concentration with buret readings? What would the concentration of HC2H3O2 (M) be? For example, Molarity of the NaOH solution: 0.2619 M Final buret reading: 31.10 ml Initial buret reading: 0 Volume of NaOH solution: 31.0 ml concentration of HC2H3O2 (M...
Wednesday, March 20, 2013 at 3:58pm by Anna

chemistry
It still makes no sense to me. Here is the problem as I see it. I don't understand what the 15% has to do with the problem. What is the mass of NaOH (notice I use caps since naoh means absolutely nothing) required to neutralize 176 g H2SO4. 2NaOH + H2SO4 ==> 2H2O + Na2SO4 ...
Saturday, March 19, 2011 at 10:40am by DrBob222

chemistry
calculate the molarity of a solution prepared by dissolving 5g of sodium hydroxide in water to make 1l of solution
Wednesday, May 11, 2011 at 3:33pm by dann mavado

chemistry - science
calculate molarity of NaOHin the solution prepared by dissolving its 4g in enough water to form 250ml of this solution ?
Friday, February 17, 2012 at 7:31am by tania

Science
Calculate the molarity of a solution formed using 55.4 g of AgNO3 in enough water to form 250 ml of solution.
Monday, October 1, 2012 at 7:07pm by Megan

chemistry
Calculate the molarity of the K+ ion in a solution prepared by adding of 5.55 g of K2SO4 to enough water to form 0.500 L of solution.
Saturday, December 15, 2012 at 10:44pm by julie

chemistry
Calculate the molarity of the K+ ion in a solution prepared by adding of 5.55 g of K2SO4 to enough water to form 0.500 L of solution.
Wednesday, April 3, 2013 at 10:27pm by kelli

Chemistry
Calculate the molarity of 1 lit solution of 93% H2SO4 by weight by volume even the density of solution is 1.84 g/ml
Saturday, August 10, 2013 at 2:54am by Aman

chemistry
calculate the molarity of the solution prepared by dissolving 16.45g NH4NO3 in water to make 250.mL solution.
Sunday, March 16, 2014 at 8:39am by hunter

science
6g of impure NaOH was dissolved in 100ml of a solution.0.25molar solution of the base utilize 27.6ml of the solution containing 6g of trioxonitrate(5)acid.calculate (a)molar concentration of acid (b) molar concentration of base (c) mass of the base (d) % purity of the base
Saturday, January 19, 2013 at 2:15am by chm 101

ChEMISTRY (Help please)
Calculate the mass percent of acetic acid in acetic acid solution. Average molarity= .8806753M Average density= 3.27463 Molar mass of acetic acid= 60.042g
Tuesday, April 13, 2010 at 8:02pm by Michelle

chemistry
When 10.0 mL of 0.012 M Pb(No3)2 is mixed with 10.0 mL of 0.030M KI, a yellow precipitate of PbI2(s) forms. a. Calculate the molarity of [Pb2+] b. calculate the initial molarity of [I-] c. On measuring the equilibrium concentration of [I-] it cam out to be 8.0 x 10^-3 M. ...
Thursday, August 19, 2010 at 4:10pm by Anonymous

chemistry
1.) wouldn't it make the molarity less I don't see it that way. mLNaOH x M NaOH = mLv x Mv so Mv = mLNaOH x M NaOH/mLv. Increasing mL NaOH increases the numerator, mL v in the denominator stays the same so the M of the vinegar must increase. 2.) then that would make the ...
Thursday, October 1, 2009 at 7:48pm by DrBob222

Chemistry
A 10.0 ml sample of vinegar which is an aqueous solution of acetic acid, requires 16.5ml of a 0.500M NaOH solution to reach the endpoint in a titration (where the moles of acid are equal to the moles of base). What is the molarity of the acetic acid solution?
Tuesday, April 19, 2011 at 11:03pm by Brittany

chemistry
I'll let HAc stand for HC2H3O2. Then NaOH + HAc ==> NaAc + H2O. Calculate mols NaOH. mols = L x M = ?? Calculate mols HAc. mol = L x M = ?? They react in 1:1 ratio. Use logic to determine how much NaAc is produced and how much NaOH remains unreacted. Note: Check the problem...
Wednesday, April 9, 2008 at 2:08am by DrBob222

Chemistry
An aqueous solution contains 2.0 % NaCl by mass. (1) Calculate the molality (NOT molarity!) of the solution. (2) Calculate the mole fraction of the solution. I know how to solve both but the problem is missing one other compound/element. I know that molality is moles per kg of...
Tuesday, January 26, 2010 at 9:34am by .

Chem II
A solution is prepared by dissolving 12.7 g Ca(NO3)2 in enough water to make 100.0 mL of stock solution (molar mass is 164.09-1). What is the molarity of the solution?
Wednesday, January 23, 2013 at 10:08pm by vera

chemistry
A mixture was formed by adding 4.56g of KCL to water to make 175mL of solution. The density if the solution is 1.12g/mL. Whatis the mass percent and what is the molarity of the potassium chloride solution?
Thursday, August 8, 2013 at 2:50pm by joshua

chemistry
molarity=mass/formula mass * 1/volume solveing for mass mass=molarity*formulamass*volumeinLiters
Sunday, September 16, 2012 at 10:12pm by bobpursley

chemistry
Was the purpose of the experiment to find the concentration of vinegar or the concentration of NaOH? To make any sense out of all this we must know the concentration (molarity) in moles/liter of either the acid (vinegar) or the basic (NaOH) solution. I can't find it in the ...
Friday, June 12, 2009 at 1:51pm by GK

Chemistry
Calculate the molar mass of a diprotic acid. It reaches the endpoint of the titration with NaOH at 28ml. The initial concentration of NaOH is 0.09792. and the initial mass of the diprotic acid is 0.685g. I keep getting a molar mass of 500g/mol. but the options are all around ...
Saturday, March 30, 2013 at 8:45pm by Katie

Chemistry
Calculate the molar mass of a diprotic acid. It reaches the endpoint of the titration with NaOH at 28ml. The initial concentration of NaOH is 0.09792. and the initial mass of the diprotic acid is 0.685g. I keep getting a molar mass of 500g/mol. but the options are all around ...
Saturday, March 30, 2013 at 8:50pm by Katie

chemistry
1)How many milliliters of 1.5 M NaOH will react completely with 448 mL of 0.600 M HCl? NaOH (aq) + HCl (aq) NaCl (aq) + H2O (l) 2)What is the percent yield of the following reaction if 15 g H2O are obtained from the combustion of 18 g C2H6? 2 C2H6 (g) + 7 O2 (g) 4 CO2 (g...
Sunday, October 24, 2010 at 5:24pm by Chicka

chemistry
what is the molarity of a h2so4 solution if 18.5ml of naoh are needed to neutralize 25.0 mL of the sample?
Tuesday, October 16, 2012 at 2:52pm by sandra

Chemistry
Need help with problem (Molarity) How many grams of NaOH are required to prepare 500.0mL of a 2.00 M solution?
Tuesday, March 19, 2013 at 8:47am by JOY

chemistry
A hexane solution contains as impurities 5.2% (by mass) hepatne and 2.9% (by mass) pentane. Calculate the mass of each component present in 93g of the solution.
Sunday, April 17, 2011 at 7:10pm by Pat

Chemistry!
When 2.5g of NaOH were dissolved in 49.0g water in a calorimeter at 24.0 C, the temperature of the solution went up to 37.1 C. a. Is the solution reaction exothermic? Why? The temperature or the water went from 24.0 to 37.1 which is an increase. If the solution of NaOH in ...
Monday, December 4, 2006 at 1:30am by DrBob222

chem
A 0.050 L solution of H2SO4 requires 200.0 mL of 4.0 M NaOH for phenophthalein to turns pink to colorless. What is the molarity of the original H2SO4 solution? I got 4M but my instructor said it's 8M how did he get that? Pls need help figuring it out. Thanks
Friday, December 7, 2012 at 8:55pm by Tricia

chemistry
A 10.0-mL sample of vinegar, which is an aqueous solution of acetic acid, CH3COOH, requires 16.5 XML of a 0.500M NaOH solution to reach the endpoint in a titration (where the moles of acid are equal to the moles of base). What is the molarity of the acetic acid solution
Wednesday, May 4, 2011 at 9:14am by Zarion Gibbs

Chemistry
I dissolved 4g of solid NaOH in 200mL of water. I converted grams of NaOH to moles by 4g/40g/moles= 0.1moles. I calculated the concentration of NaOH by 0.1/(200mL/1000L)= 0.5 moles/L. I now have to record the expected mass of benzoic acid required to react in stoichiometric ...
Wednesday, January 13, 2010 at 8:52pm by linda

chemistry
calculate the volume of mL of a 1.420 M NaOH solution required to titrate the following solution. 25.00 mL of a 1.500 M H3PO4 solution
Tuesday, October 11, 2011 at 8:13pm by TROUBLED

Chemistry
Calculate the initial molarity of KNH2 and the molarities of K+, NH3, OH-, and H3O+ in an aqueous solution that contains 0.75 g of KNH2 in 0.255 L of solution. You may ignore the reaction of NH3 with water. I already found the initial molarity, but I am not sure how to find ...
Monday, February 22, 2010 at 7:18pm by Trixie

Chemistry
A solution is labeled as ~8M NaOH. How many mL of this solution would be needed to prepare 750mL of a ~0.2M NaOH solution?
Tuesday, October 19, 2010 at 2:29pm by Katie

chemistry
calculate the molarity of an acetic acid solution if 83.71 mL of the solutions needed to neutralize103 mL of 1.08 M sodium hydroxide. the equation for the reaction is. HC2H3O2(aq) + NaOH(aq) >Na+(aq) + C2H3)2(aq) +H2O(aq) Please show your work i really don't understand what...
Monday, April 30, 2012 at 9:35pm by Randy

chemistry
19,000 ppm by mass means 19,000 g Cl^-/1,000,000 g solution. The solution then consists of 19,000 g Cl^- and 981,000 g H2O. Remember that molarity = moles/L. How many moles do you have. 19,000 g Cl^-/atomic mass Cl^- = moles. What is the volume of water? That is mass = volume ...
Monday, February 1, 2010 at 7:07pm by DrBob222

chemistry
If the endpoint in the titration of KHC8H4O4 solution with the NaOH solution is mistakenly surpassed, will the molar concentration of NaOH solution be reported too high or too low?
Tuesday, May 7, 2013 at 3:27pm by Kerapetsi

CHEM 136
A sample of 25.00 mL of 0.100 M HNO2(in a flask) is titrated with 0.150 M of NaOH solution at 25 degrees. 1) calculate the volume(Ve) of the NaOH solution needed to completely neutralize the acid in the flask. 2)calculate the pH for (a)the initial acid solution in the flask (b...
Tuesday, November 23, 2010 at 4:49pm by Jefferson

chemistry
HCl is titrated with NaOH. When doing the titration, some of the NaOH splashed onto the inside surface of the Erlenmyer flask, and you forgot to rinse it into your sample. Would the systematic error be falsely high, low, or unaffected and why? Thanks. As I understand the ...
Sunday, September 17, 2006 at 4:25pm by bria

Chem II
pi=osmotic pressure = Molarity*R*T Plug in the numbers and calculate molarity. Then use delta T = Kb*m since the density of the solution is 1 kg/L, you may use m = M and solve for delta T.
Friday, June 6, 2008 at 9:34pm by DrBob222

Algebra
x^2 -56 x = -p - 300 complete the square to find vertex of parabola x^2 -56 x + 784 = -p +484 (x-28)^2 = - (p-484) so vertex (max of p) is at (28,484)
Wednesday, July 20, 2011 at 7:26pm by Damon

chemistry
Calculate the molarity of a solution that is prepared by dissolving 23.35g of CaCl2 in a sufficient amount of water to make a 600 mL solution
Wednesday, May 7, 2008 at 9:02pm by katie

chemistry
Calculate the molarity of a solution that is prepared by dissolving 23.35g of CaCl2 in a sufficient amount of water to make a 600 mL solution.
Wednesday, May 7, 2008 at 11:16pm by katie

Chemistry
calculate the molarity of a solution made by dissolving 0.750 grams of Na2SO4 in enough water to form exactly 850 mL of solution.
Tuesday, October 16, 2012 at 5:05pm by Anonymous

chemistry
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.
Wednesday, January 16, 2013 at 9:01pm by Anonymous

chemistry
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.
Wednesday, January 16, 2013 at 9:02pm by Anonymous

chemistry
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.
Wednesday, January 16, 2013 at 9:05pm by Anonymous

Chemistry
Calculate the molarity of a solution made by dissolving 16.0 grams of Na2CrO4 in enough water to form exactly 555 mL of solution.
Wednesday, March 13, 2013 at 7:47pm by Sam

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