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October 1, 2014

Search: An unknown amount of water is mixed with 350 mL of a 6 M solution of NaOH solution. A 75 mL sample of the resulting solution is titrated to neutrality with 52.5 mL of 6 M HCl. Calculate the concentration of the diluted NaOH solution

Number of results: 45,436

Physics
The freezing point depression of a .100 m solution of NaCl solution is .34C. Calculate the percent dissociation of NaCl.( Kf for water=1.86) Please help
August 27, 2009 by Sammy

Chemistry
A water solution containing 25.0% sucrose by mass, has a density of 1.25g/mL. What volume of this solution in liters, must be in an application requiring 2.50 KG of sucrose?
September 27, 2010 by Kate

Chem3
A solution is prepared by dissolving 22.8 mL of methanol (d = 0.782 g/mL) in 100 mL of water (d = 1.00 g/mL) so that the final volume of solution is 118 mL. What is the percent methanol by mass?
May 2, 2011 by Ryan

Chemistry
You have 250 mL of a 0.80 M solution of silver nitrate AgNO3 (169.87 g/mol) dissolved in water. How many grams of AgNO3 does the solution contain?
October 17, 2011 by sara

chemistry
If 5.20 g of HCl is added to enough distilled water to form 3.00 L of solution, what is the molarity of the solution? [Use molecular weight: HCl, 36.46 amu]
October 29, 2011 by Chemistry Chick

chemistry
You have 26.44 mL of 1.83 M HCl in a beaker. You dilute this acid with 40.08 mL of water. When you analyze the solution you find that the number of moles of HCl in the new solution is
December 5, 2011 by Anonymous

Chemistry
78 mL of a 1.60M solution is diluted to a volume of a 238mL. A 119-mL portion of that solution is diluted using 133 mL of water. What is the final concentration
April 13, 2012 by Sam

Chemistry
54.0 mL of a 1.50 M solution is diluted to a total volume of 258 mL. A 129-mL portion of that solution is diluted by adding 165 mL of water. What is the final concentration?
February 2, 2013 by Sara

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?
March 19, 2013 by ben

Chemistry
A solution was prepared in which 12.0 g of glycerin was dissolved in 80.0 g of water. The freezing point of the solution was -3.03 °C. Use this information to determine the molar mass of glycerin.
December 5, 2013 by Megale Russell

Chemistry
A 0.5224g sample of an unknown monoprotic acid was titrated with 0.0998M of NaOH. The equivalence point of the titration occurs at 23.82 mL. Determine the molar mass of the unknown acid.
April 29, 2012 by Confused

Chemistry
What would be the resulting molarity of a solution made by dissolving 21.9 grams of KCl in enough water to make an 869-milliliter solution? Show all of the work needed to solve this problem.
March 21, 2011 by ilyrae

AP CHEMISTRY
Calculate the solubility of LaF3 in grams per liter in the following solutions. (Ksp = 2. 10-19.) a) pure water Ans: .00182g/L b) 0.037 M KF solution c) 0.055 M LaCl3 solution NEED b&c PLEASE HELP
March 13, 2012 by HELP PLEASE

chemistry
8.058g x 10-2 kg of washing soda na2co3 10h20 is dissolved in water to obtain 1L of a solution of density 1077.2kg/m3. Calculate the molarity, molality and mole fraction of na2c03 in the solution? who helps
January 1, 2013 by Fai

chemistry
A solution is made by dissolving 7.084 g of aluminum nitrate, Al(NO3)3, in 123.0 g of water. What is the mass percentage of solute in this solution? this feels like a simple problem but i just don't know. divide the two?
February 14, 2014 by hershi

chemistry
A sample of water is found to contain 0.059 ppm of Pb2+ ions. Calculate the mass of lead ions per liter of this solution (assume the density of the water solution is 1.0 g/mL) 1.2E-2 g/L Pb2+ 5.9E-8 g/L Pb2+ 5.9E-5 g/L Pb2+ 1.2E-5 g/L Pb2+ 2.9E-10 g/L Pb2+
February 5, 2012 by Heaton

chemistry
a sodium hydroxide solution was prepared according to the procedure outlined in this weeks experiment. This sodium hydroxide solution was standardized by by titration against exactly 10mL of a 0.28M hydrochloric acid solution. In three titrations, the volumes of the sodium ...
November 25, 2012 by Kacie

Chemistry Check Please! ?Fixed
A solution is prepared by dissolving 3.44 g of sucrose, C12H22O11, in 118 g of water. a) What is the molality of the resulting solution? b) What is the mole fraction of water in this solution? B) moles of h2o=118g/18(g/mol)=6.548 mol moles of c12h22O11= 3.44g/342.3(g/mol)=0....
January 17, 2014 by Kate

Math
How much water mest be added to 6 ounces of a 20% acid solution to obtain a 15% acid solution?
April 16, 2009 by Brian

algebra
How much water mest be added to 6 ounces of a 20% acid solution to obtain a 15% acid solution?
April 16, 2009 by Brian

math
How many liters of water must be added to 10L of a 95% solution of ammonia to make a solution that is a 50% ammonia?
December 14, 2009 by kariga

Chemistry
A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution?
February 9, 2010 by cc

Chemistry
A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution
February 9, 2010 by cc

chemistry
A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution
February 9, 2010 by CC

math
chemist has 6liter of 50% acid solution .how much water added to obtain 20% acid solution?
May 1, 2010 by Anisha

Algebra
Chemist has 60 g of solution that is 70% acid. How much water should be added to make a solution that is 40% acid?
May 24, 2010 by TinaG

algebra
How many kilograms of water must be evaporated from 10kg of an 8% salt solution to produce a 25% salt solution
May 24, 2010 by TinaG

algebra
How many kilograms of water must be evaporated from 10kg of an 8% salt solution to produce a 25% salt solution
May 24, 2010 by TinaG

chemistry
how do you calculate the molaarity of a water solution of CaCl2, given that 5.04 L of the solution contains 612 g of CaCl2.
June 13, 2010 by denise

Chemistry
A solution is made up by dissolving 14.8 g Na2CO3 10 H2O in 110.5 g of water. What is the molality of Na2CO3 in this solution?
December 20, 2010 by Jintau

chem
what is the molality of a solution of 50.0 grams of propanol in 152 mL water if the density of wate is 1.0 g/mL and the density of the solution is 0.78 g/mL
February 12, 2011 by paula

Chemistry
How much distilled water must be added to .85% solution Of NaCL to make a 70% solution of NaCl
February 15, 2012 by Joan

algebra
How much water should be added to 20oz of a 15% solution of alcohol to dilute it to s 10% alcohol solution?
February 24, 2012 by rhonda

Algebra
A chemist has 40 ml of a solution that is 50% acid. How much water should be added to make a solution that is 10% acid?
October 8, 2012 by Steven

Chemistry
How can i prepare a solution of 12 g 50% (w/v) NaOH?
June 17, 2011 by PAnos

chemistry
How many moles NaOH in 66.4 mL of 0.1 M solution?
December 8, 2011 by Anonymous

chemistry
The pH of saturated is found to be 13.12. A 15.0mL sample of saturated Sr(OH)2 is diluted to 250.0mL in a volumetric flask. A 15.0 mL sample of the diluted Sr(OH)2 is transferred to a beaker, and some water is added. The resulting solution requires 27.6mL of a HCl solution for...
April 11, 2011 by chips ahoy

chemistry
If 58g of NaOH are dissolved in water to make a final volume of exactly 400mL, what is the molar concentration of NaOH? (The FM of NaOH = 40.0) How do I set this up?
October 31, 2011 by Katie

Chemistry
A student completes titration by adding 12.0 mL of NaOH(aq) of an unknown concentration to 16.0 mL of 0.15M HCl(aq). what is the molar concentration of the NaOH(aq)?
June 7, 2012 by Nina

Organic Chemistry
Hello, I just have a quick question that I would like to have clarified. According to my textbook definition, NaBH4 (a reducing agent) can be used in solution in alcohols or even solution in water - provided the solution is alkaline." However, my textbook, in all of the ...
December 6, 2010 by Toki

confirm math answers
I have 3 problems I need my answers confirmed for. The solution for log subscript 3 1/9 = x is the solution -1/2? Secondl, what is the solution for 9^2x = 3^x+6 does x=2? Lastley is the answer to 3 ^5x+2 = 81 does x= 2/5? Help sincerely appreciated! The solution for log ...
January 13, 2007 by trish

Chem
A concentrated solution of ammonia is added to a solution of zinc oxide? NH3 + ZnI2 => ?? An excess of nitric acid solution is added to a solution of tetraaminecopper (II) sulfate. HNO3 + ? => ?? Zn forms the Zn(NH3)4^+2 ion. It MAY form some Zn(OH)2 at small amounts of ...
May 10, 2007 by Sara

chem
How would u prepare each of the following solutions 100 mL of a 245 ppm solution of urea, CH4N2O, in water and How would u prepare each of the following solution 100 mL of an aqueous solution whose K+ concentration is 0.084 M Write up the procedure, and I will gladly check it...
June 27, 2006 by UTramos

Chemistry
A chemist dissolves 0.095 g of CuSO4 5H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 39.7-mL sample of this solution is then transferred to a second 500-mL volumetric flask and diluted. What is the molarity of CuSO4 in the second solution?
March 23, 2013 by Neftali

ap chemistry
what mass of barium sulfate can be produced when 100 ml 0.100 M of solution of barium chloride is mixed with 100.0 ml of a 0.100 M solution of Iron (III) sulfate
September 24, 2014 by mathew

chemistry
a 30.0 ml solution of potassium nitrate was diluted to 125 ml and 25 ml of this solution were then diluted to 150 ml. the concentration of the final solution is 0.00307 M. Calculate the concentration of the original solution.
July 7, 2011 by Carol

chemistry
if it requires 35.0 milliliters of 0.50 molar NaOH to neutralize 25.0 milliliters of HCl, what is the concentration of the HCl solution? Balanced equation: NaOH + HCl yields NaCl + H2O
November 17, 2010 by smith

chem
an aq. solution(NaCl) made by using 133g diluted to a total solution volume of 1 L.Calculate the molarity, molality & mass % of the solution(density of solution = 1.08g/mL) [ans: M=1.92M, m=2.0m, 10.4 %] i need the calculation work bcus my ans is contradict from the real ans.
July 21, 2011 by lily

chemistry
the density at 20 degrees celcius of a .258m solution of glucose in water is 1.0173 g/ml, and the molar mass of glucose is 180.2 g/mol. What is the MOLARITY of the solution?
October 20, 2008 by Eric GReenblatt

chemistry
A 1.10- sample contains only glucose and sucrose . When the sample is dissolved in water to a total solution volume of 25.0 , the osmotic pressure of the solution is 3.78 at 298 .
January 24, 2010 by bf

Chemistry
What formula do I use to figure. 16.5 g of KCL (MM=74.55 g/mol) is dissolved in enough water to make 575 mL of solution. Calculate the molarity of the KCl solution.
July 25, 2010 by Norma

Chemistry
How much of a 500 ml bottle of 1.00 molar KCI solution should be diluted with deionized water to give 200.0 ml of a 0.100 molar solution
February 14, 2011 by Jane

chemistry
Ammonia gas is passed into water ,yielding a solution of density 0.93 g/cm^3 and containing 18.6% NH3 by wieght .The mass of NH3 per cc of the solution is?
July 6, 2011 by solution...

Chemistry
Calculate the molarity of Na2C204 solution prepared by dissolving 1.2222 grams of pure Na2C204 in enough water to make 500.00 mL of solution.
October 25, 2011 by Ashley(please help!!!!)

Chemistry
Calculate the molarity of Na2C204 solution prepared by dissolving 1.2222 grams of pure Na2C204 in enough water to make 500.00 mL of solution.
October 25, 2011 by Ashley(please help!!!!)

chemistry
20mL ethanol(density=o.789g/mol) is dissolved in sufficient water to produce a 200mL solution. the density of the solution is 0.982g/mL. what is the molarity?
March 11, 2013 by mj

Chemistry
A student mixes 450 mL of water and 116 mL of 7.90 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?
April 29, 2013 by Tif

chemistry
A sample of solid ammonium chloride, NH4Cl, is dissolved in water. The solution formed was found to be acidic. Can you please explain why the solution is acidic?
July 14, 2014 by lilliso

grade 12 chemistry
Solubility equilibrium: is dynamic equilibrium in a saturated solution between excess solute and aqueous solution(solvent) or between crystals and dissolved solute--> no it has to be crystals and solvent right becuase crystals are basically solute not dissolved yet?? ...
July 20, 2009 by sam

Chemesitry!
Sodium thiosulfate, Na2S2O3, is used as a fixer in photographic film developing. The amount of Na2S2O3 in a solution can be determined by a titration with iodine, I2, according to the equation: 2Na2S2O3(aq) + I2(aq) --> Na2S4O6 +2NaI(aq). Calculate the concentration of the ...
October 5, 2012 by Anonymous

Chemistry Help.......
Sulfuric Acid (H2SO4) is a strong acid, which dissociates when dissolved in water according to the following equation: H20SO4(aq)-> 2H+(aq) + SO4 2- (a) A 0.21g sample of sulfuric acid is dissolved completely in sufficiebt water to make 0.25litre of the final solution. ...
March 4, 2007 by Adam

Sci
when a large amount of FeCl3 is dissolved in water, a clear solution is formed at the beginning but eventually a precipitate is formed. Why? Explain with chemical equation.
March 2, 2013 by T

Chemistry
When 3g of sodium hydroxide (NaOH) was dissolved in 150g of water a value of 10.5 degrees C was obtained for delta T. Calculate the heat (calories) produced by the solution of 3 g of NaOH Calculate the number of calories that would be produced if one mole of sodium hydroxide ...
November 2, 2006 by Talina

chemistry
According to the reaction NaOH + HCl NaCl + H2O, which is the limiting reactant when 37.0 g of HCl are mixed with 37.0 g NaOH?
April 18, 2013 by Anonymous

Chemistry
What is the molarity of HCL if it takes 16.5 mL of 0.100 M NaOH to titrate 10.0 mL of HCl? HCl + NaOH -> H2O + NaCl molarity = moles of solute/liters of solution
September 18, 2014 by Selena

Mole fraction of a vapor pressure?
If 0.380 mol of a nonvolatile nonelectrolyte are dissolved in 3.00 mol of water, what is the vapor pressure P(H2O) of the resulting solution? The vapor pressure of pure water is 23.8 torr at 25 C. I got this answer correct: 21.1 torr A solution is composed of 1.50mol ...
September 2, 2010 by Sar

Chemistry
You want to determine the molar heat of solution of sodium chloride using a 10.0 g sample of NaCl(aq) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the specific heat of the solution is the same as the specific heat of ...
July 14, 2011 by Neha

College Gen.Chemistry
A student wanted to determine the amount of copper in a sample of copper ore. The student dissolved a 2.500 0.001 g piece of copper ore in about 75 mL of nitric acid; then, a complexing agent was added. The student transferred this solution to a volumetric flask and used de-...
March 25, 2014 by Anonymous

Chemistry - Science (Dr. Bob222)
A student wanted to determine the amount of copper in a sample of copper ore. The student dissolved a 2.500 0.001 g piece of copper ore in about 75 mL of nitric acid; then, a complexing agent was added. The student transferred this solution to a volumetric flask and used de-...
March 25, 2014 by Anonymous

mat 116
two large storage tanks, T and W contain water. T starts losing at the same time additional water starts flowing into W. The graph below shows the amount of water in each tank over a period of hours. Assume the rates of water loss ad water gain continues as shown. At what ...
March 2, 2014 by csrla

chemistry
150.0ml of iron(iii)chloride solution is mixed with 180.0ml of the sodium hydroxide solution,1.65g yield of experimental iron(iii)hydroxide is obtained.find the theoretical yeild of the precipitate. how you find that ?
December 14, 2012 by Riana

chemistry
150.0ml of iron(iii)chloride solution is mixed with 180.0ml of the sodium hydroxide solution,1.65g yield of experimental iron(iii)hydroxide is obtained.find the theoretical yeild of the precipitate. how you find that ?
December 14, 2012 by Riana

physiscs
A 10g sample of an unknown ionic compound is dissolved, and the solution is treated with enough AgNO3 to precipitate all the chloride ion. If 30.1 g of AgCI are recovered, which of the following compound could be the unknown? A. NaCI B. NaNO3 C.BaCI2 D. Mg CI2 E.KCI Pleas help...
November 14, 2010 by Jay

Chemistry
In lab we did thermochemistry, where we are supposed to find the heats of solution, heat change of calorimeter and molar heat solution of the salt. I calculated that the calorimeter constant for the water we had was 883.194 Joules. We took 1/10 of a mole of NH4Cl and tried to ...
October 31, 2010 by Rani

AP Chemistry
HBr is mixed with water. Which is the best description of what you would expect to find in the solution? 1. H3O+, Br1−, and water molecules 2. HBr molecules, H3O+, Br1−, and water molecules 3. Br+, OH1−, and water molecules 4. HBr molecules and water ...
September 17, 2010 by Nick

chemistry
HBr is mixed with water. Which is the best description of what you would expect to find in the solution? 1. Br1−, OH1−, and water molecules 2. HBr molecules and water molecules 3. H2Br+, OH1−, and water molecules 4. H3O+, Br1−, and water molecules 5. Br...
September 19, 2012 by cheri

CHEMISTRY
The solubility of KClO3 in 25 oC is 10 g solute per 100 g water if 15 g of KClO3 is embedded in 100 g water in 25 oC , then , what is the amount of KClO3 that can be dissolved ? is the solution unsaturated , saturated , or super saturated ? thank you
July 12, 2014 by MAD

chemistry
acid: HCI 0.10 M Base:NaOH O.050 M 3 ml of HCI was used. Calculate the volume of base required to reach the equivalence point of this titration. Somewhere in the finding the solution, i have to use the fact that Moles HCl = moles NaOH. this is what i have so far: Volume of ...
March 3, 2009 by Anonymous

Chemistry
In the reaction: P4 (S) +Cl2 (g)PCl5(s), 1. If you have 10.00 grams of Phosphorus to react with 220 grams of Chlorine gas, what would be the theoretical yield of PCl5(s), in grams? 2. Why was there condensation of the beaker of cold water when a blue flame was passes ...
December 4, 2010 by Jerome

science experiment
See the question from earlier regarding how many variables are in the experiment. I think speed of stirring is a variable. So, my answer would be 3 variables. One for water temp., speed of stirring, and the calcium carbonate solubility. Is this right? I don't think speed of ...
February 13, 2007 by Hailey

Chemistry
What is the mole fraction of methanol CH3OH, in the vapor phase from a solution consisting of a mixture of methanol and propanol CH3CH2CH2OH at 40celsius, if the total pressure above the solution is 131 torr? The vapor pressures of methanol and propanolare 303 and 44.60 torr ...
April 23, 2011 by Jude

7th grade
A solution can contain more than one aqueous solution. Name several of the aqueous solutions dissolved in water to make a drink with cola.
February 1, 2009 by danielle

Chemistry
A solution is made by dissolving 10.9 g of calcium chloride, CaCl2,in enough water to make exactly 500 mL of solution. What is the concentration (molarity) of CaCl2 in mol/L?
July 24, 2010 by Shelia

chemistry
What is the molarity of a salt solution in which 117.0 grams of salt (NaCl) is dissolved in water to give 5.00 L of solution? Show all work including units.
August 23, 2011 by len

Chemistry
How would you prepare 10.0 Liters of a solution that was 20 parts per million sodium perchlorate in water? What would be the molarity of the solution (assume density is 1.0 g/mL and 1ppm=1 mL/L)?
February 14, 2012 by John

physical science
120ml of a solution whose concentration is 30g/ml was diluted with distilled water by raising its volume to 160cm3. Calculate the concentration of the new solution.
February 25, 2012 by grace

biochemistry
A solution was prepared by dissolving 8.0g of solid ammonium sulfate (MW= 132.14, specific volume= 0.565ml/g) in 35ml (i.e 35g) of water. What is the final volume of the solution?
August 30, 2012 by KIm

Chemistry
Consider a 0.71 M solution of each of the following salt dissolved in distilled water. Will the solution by basic, neutral, or acidic? KI= NH4NO2= (CH3CH2)3NHNO2= (CH3CH2)2NH2ClO4=
December 11, 2012 by Chris

Chemisty Help Please!
A solution is prepared by dissolving 25.0 g of glucose, C6H12O6, in 125 g of water at 25oC. (show work please) Determine the freezing point of the solution.
January 14, 2014 by Igor

Chemistry
My final exam is coming up so I am doing study guides to help me practice. I would really appreciate any help that is given. 1. The hydronium ion concentration for a solution is determined to be 4.5 x 10^-7 M. What is the concentration of the hydroxide ion? 2. When a 5.00 mL ...
November 25, 2012 by Studying

Chemistry
What is the pH of the solution created by combining 11.40 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? Here is the chart that i am supposed fill out: mL NaOH pH w/ HCl pH w/ HC2H3O2 11.40 _________ ____________ Here's ...
April 27, 2009 by Lisa

math
how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution?
April 6, 2010 by Dawn

math
how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution?
April 6, 2010 by Dawn

math
how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution?
April 6, 2010 by Anonymous

chemistry
What is the concentration of this solution? If you added 10mL of water to the 10mL of 0.010M CaCl2 solution.
September 13, 2010 by fredy

chemistry
If you have 137.8 mL of a 38.4% aqueous solution of ethanol, what volumes of ethanol and water are in the solution?
November 4, 2010 by MaryBeth

chemistry
If you have 137.8 mL of a 38.4% aqueous solution of ethanol, what volumes of ethanol and water are in the solution?
November 4, 2010 by MaryB

chemistry
What is the pH of a solution prepared by dissolving 6.0 g of HCl in water to make 415 mL of HCl solution?
March 29, 2011 by Chuck

Science
how would you make 1 molar solution using 4 molar solution and pure water?
June 9, 2011 by Kayla

mes
a solution of sugar in water is 5% by mass. how much sugar is present in 250 gm. of solution?
June 25, 2011 by dona

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