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Calculate the molarity of a solution of sodium hydroxide, NaOH, if 23.64 mL of this solution is needed to netralize 0.5632 g of potassium hydrogen phthalate

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HELP!! Chemistry
Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 2. What is the molarity of a 2.50 x 102 cm3 solution containing 450.0 g of C6H12O6 ? 3. How many moles of ...

chemistry
if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person? What is the concentration of a solution of sodium nitrate that contains 35.0 g...

chemistry
if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person? What is the concentration of a solution of sodium nitrate that contains 35.0 g...

Chemistry
A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was added, What is the percent KHP in the unknown to four significant figures.

Chemistry
A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was added, What is the percent KHP in the unknown to four significant figures.

science
A 25mL solution of nitric acid was placed in a flask and a few drops of phenolphthalein were added. Dilute sodium hydroxide was added until the indicator changed colour. It was found that 28mL of the alkali was used. What colour was the solution in the flask at the start of ...

chemistry
Calculate .200 mol sodium phosphate in 10.0 ml of solution

Chemistry
Calculate the pH of a 1.19M sodium formate, HCOONa, solution.

chem
Calculate the pH of each and determine whether each of the following solutions is acidec or basic. a) [H^+]=1.0 e-11M solution b) [OH^-]=1.5 e-3M solution c) [H^+]=5.2 e -5M solution

chemistry
A buffer is made by adding 0.300 mol HC2H3O2 and 0.300 mol NaC2H3O2 to enough water to make 1.00 L of solution. The pH of the buffer is 4.74 . Calculate the pH of this solution after 0.020 mol of NaOH is added.

chemistry
The titration of 5.40 mL of a saturated solution of sodium oxalate, Na2C2O4, at 25∘C requires 29.4 mL of 2.200×10−2 M KMnO4 in acidic solution. What mass of Na2C2O4 in grams would be present in 1.00L of this saturated solution?

chemistry
A buffered solution is made by adding 50.0 g NH4Cl to 1.00 L of a 0.84 M solution of NH3. Calculate the pH of the final solution

chemistry
a 1.00 L aqueous solution contained 5.80 g of NaOH. what is the pH of the solution? Can someone help me out with the setup of this?

Chemistry
Why is a NaOH solution disposed differently than a solution composed of Water and Nacl2

Chemistry
.012 mol of solid NaOH is added to a 1 L solution of HCl 0.01 M. What is the pH of the solution?

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. ...

Chemistry:Important!!!!!!!
20.00 mL of a H2SO4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 39.13 mL of a 0.1061 M NaOH solution. What is the concentration of the H2SO4 solution?

Physical Science
5. What reactions occurs when a solution of hydrochloric acid, HCl, is mixed with a solution of calcium hydroxide, Ca(OH)2? (A) Cl + Ca(OH) --> HCa + Cl(OH)2 (B) HCl + Ca(OH)2 --> H(OH)2 + CaCl (C) 2HCl + Ca(OH)2 --> 2H2O + CaCl2 (D) 2HCl + Ca(OH)2 --> H2Ca + 2ClOH...

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

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

chem
Calculate the final concentration of a. 4.0 L of a 4.0 M HNO3 solution is added to water so that the final volume is 8.0L b. Water is added to 0.35L of a 6.0M KOH solution to make 2.0L of a diluted KOH solution. c.A 20.0 mL sample of 8.0% (m/v)NaOH is diluted with water so ...

Chemistry
What is the concentration of OH- in a solution that contains 0.225g of NaOH in 0.250L of solution?

Chemistry II
Acetone, C3H6O, is the main ingredient of nail polish remover. A solution is made up by adding 35.0mL of acetone(d=0.790g/mL) to 50.0mL of ethyl alcohol,C2H6O(d=0.798 g/mL). Assume that the volumes are additive. From this information calculate the molarity of acetone in the ...

Chemistry
When HCl(aq) is exactly neutralized by NaOH(aq), the hydrogen ion concentration in the resulting mixture is a. always equal than the concentration of the hydroxide ions b.sometimes greater and sometimes less than the concentration of the hydroxide ion c. always greater than ...

Chemistry
A solution of I2 was standardized with ascorbic acid. Using a .1000 g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. A. What is the molarity of the iodine solution? B. What is the titer of the iodine solution?

Chemistry
A solution of I2 was standardized with ascorbic acid. Using a .1000 g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. A. What is the molarity of the iodine solution? B. What is the titer of the iodine solution?

Chemistry
If your solution’s final volume of 32.55 mL yields 3.6 grams of AgCl, determine the Molarity of the final solution. Also, how many milliliters of a 1.85 M solution of AgNO3 did you add to an excess of aqueous NaCl to provide the 3.6 grams of AgCl?

chemistry
Choices: True,False. Select all that are True. The pH at the equivalence point of a weak base with a strong acid is expected to be less than 7 because of the presentce of the conjugated acid in the water. One cannot prepare a buffer from a strong acid and its conjugated base, ...

College Chemistry
48.70 mL of an HCl stock solution was transferred into a 500 mL volumetric flask and filled to the mark. 47.67 mL of the diluted solution was titrated with 0.179 M NaOH and found to have the concentration of 0.885 M. What is the concentration of the stock solution?

Chemistry
Why would NAOH solution need to be added when preparing the K2CrO4 stock solution?

chemistry
How many milliliters of .50 M NaOH solution are required to titrate 40.0 mL of a 0.10 M H2SO4 solution to an end joint?

chemistry
How many grams of NaOH should be dissolved in 1 litre of solution to prepare a solution with pH value12

chemistry
If 40 mL of a 6 {\rm M} \;{\rm NaOH} solution is diluted to a final volume of 200 mL, what is the resulting concentration of the solution?

chemistry
In order to dilute 1L of 6M solution of NaOH to .5M solution, how much water must be added?

Biochem
What is the pH and pOH a solution that was made by adding 400 mL of water to 350 mL of 5.0 x 10^-3 M NaOH solution?

Chemistry
What is the concentration of a solution if I dissolve 42g of NaOH in a total volume of 375ml of solution

Chemistry
I have a 40 ml solution of pH 4.36. I need to make this solution at pH 8.5 by adding extra 10 ml of HCl and NaOH. Thanks

chemistry
How would you prepare 385 ml of a 0.856 m NaOH solution starting with a 4.93 m stock solution

science
How much water must be added to 200 g of a 10% NaOH solution to obtain 8% solution

Chemistry
What will be the pH of an aqueous solution containing 0.040 mol/L sodium hydroxide?? I got 1.40 or 1.398 I rounded the numbers is my answer right??? If not what's the right answer??

chemistry
Commercial bleach contains 5.25% (by mass) of NaClO in water. It has a density of 1.08 g/mL. Calculate the molarity of this solution.

Genral chemistry
if you dissolve 1.60g of Cu(No3)2 in 100mL of water, calculate the molarity of the resulting solution ?

Chemistry
Calculate the molality, molarity, and mole fraction of FeCl3 in a 39.2 mass % aqueous solution (d = 1.238 g/mL).

chemistry
calculate the molality, molarity, and mole fraction of NH3 in an 12.80 mass % aqueous solution (d=0.9651 g/ml)

Chemistry 2
Calculate the molality, molarity, and mole fraction of FeCl3 in a 25.7 mass % aqueous solution (d = 1.204 g/mL).

chemistry
a beaker contains 75.6 grams magnesium oxide (MgO) in 175 ml of solution, calculate the molarity?

chemistry hw
SOMEONE PLEASE HELP AND CONFIRM THE RIGHT ANSWER FOR ME...I HAVE ONE MORE ATTEMPT TO THIS PROBLEM AND I NEED HELP!!!!! PLEASE!!!!!!!!!!!!!!!!!!!! THANKS! In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied ...

Chemistry
To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) -> 4 NaAu(CN)2(aq) + 4 NaOH(aq)

Biology
what can you say about the amount of hydrogen ions relative tot he amount of hydroxide ions in a solution that has a pH of 2?

chemistry
A solution of iron(III) thiocyanate was produced by dissolving 7.98 milligrams solid iron(III) thiocyanate in enough water to produce a 100.00 mL solution. What is the concentration, in molarity, of the solution?

CHEM
What is the molarity of a calcium sulfate solution prepared by adding 27.89g of CaSo4 to sufficient water to make a final solution volume of 1.00L?

Chemistry
Calculate the pH of a solution that is 0.060 M in potassium propionate(C2H5COOK or KC3H5O2) and 0.085 M in propionic acid (C2H5COOH or HC3H5O2)

chemistry
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 0.140M in propanoic acid and 0.120M in potassium propanoate

Chemistry
How would one work through this problem? -Calculate the number of liters of 1.25M solution that can be made from 6.400g of barium nitrate. - I know that it's just stoichiometry, but I'm confused. The formula for molarity is the number of moles of the solute divided by liters ...

Math
Check my answers please. 1. What is the solution to 5 + t = 23 a. 28 b. 18 ** c.-18 d.-23 2. What is the value of b if -7 + b = -8 a. b = 15 b. b = 1 ** c. b = -1 d. b = -15 3. What is the solution to 5q = -75 a. q = -25 b. q = -15 c. q = 15 ** d. q = 25 4. What is the ...

Chemistry
80.0 grams of KBr is mixed with sufficient water to prepare 1865 mL of solution. This solution is then mixed with 46.3 mL of 0.425 M KCl solution. 12 mL of this mixture is subsequently added to 61.0 mL of distilled water. Calculate the molarity of K+ ions in the final mixture...

metro
Calculate the pH of the buffer solution that results when 10 mL of 0.10 M NaH2PO4 is added to 3 mL of 0.05 M NaOH.

chemistry
Calculate the pH of a solution resulting from the addition of 10.0 mL of 0.10 M NaOH to 50.0 mL of 0.10 M benzoic acid (Ka = 6.5 x 10 -5

Chemistry
Calculate the volume of 0.3MHCL used to neutralise NaOH solution

AP CHEM
A solution formed by mixing 13.0 mL of 0.013 M Ba(OH)2 with 31.0 mL of 7.0 ✕ 10-3 M NaOH. Calculate [OH-]

Chemistry!!
A chemist wants to prepare a stock solution of H2SO4 so that a sample of 20.00mL will produce a solution with a concentration of .50 M when added to 100.0mL of water. A)what should the molarity of the stock solution be? B)If the chemist wants to prepare 5.00L of the stock ...

chemistry
8.00g of NaOH are dissolved in water to make 4.00 of solution. What is the concentration of hydronium ions, , in this solution?

chemistry
8.00g of NaOH are dissolved in water to make 3.00 L of solution. What is the concentration of hydronium ions, , in this solution?

chem101
a 0.1M NaOH solution has been prepared for you.Describe how you would prepare 1 litre of the same solution

Chemistry
What is the pH and pOH of a solution that was made by adding 400mL of water to 350mL of 5.0x10^-3 M NaOH solution?

Chem 111
Why would NaOH solution need to be added when preparing the K2CrO4 stock solution

chemistry
You have 14.0mL of a 0.12M NaOH solution. How many moles of HCl will it take to neutralize this solution?

Chemistry
6.00 g of NaOH are dissolved in water to make 4.00 L of solution. What is the concentration of hydronium ions, [H3O+], in this solution?

chemistry
a 10.0 ml sample of a hcl solution is titrated with 32.6 ml of a 0.155 m naoh solution. what is the equation for the neutralization reaction?

Chemistry
Prepare 0.03 mole fraction solution of NaOH in water Total volume of solution is 100ml

science
Determine the amount of NaoH dissolved in 250ml of the solution by titrating it against N/10 H2so4 solution

chemistry
what is the [OH-] in a solution that contains 0.225g of NaOH in 0.250 L of solution

science
how many ml of 6M HCl solution are required to bring the pH of 10 ml of a 4M NaOH solution to 2.0

chemistry
how many ml of 6M HCl solution are required to bring the pH of 10 ml of a 4M NaOH solution to 2.0

chemistry
a sample of 20.0 mL of 0.100 M HCN (Ka=6.2*10^-10) is titrated with 0.150 M NaOH. a) what volume of NaOH is used in this titration to reach the equivalence point? b) What is the molar concentration of CN- at the equivalence point? c) What is the pH of the solution at the ...

chemistry
Al2(SO4)3+6KOH-->2Al(OH)3+3K2SO4 a)How many grams of potassium hydroxide are needed to completely react with 870 mg of aluminum sulfate? b)If you want to make 7.00 grams of potassium sulfate, how many grams of aluminum sulfate would you need to react? c)How many grams of ...

Biology
What can you say about the amount of hydrogen ions relative to the amount of hydroxide ions in a solution that has a pH of 2?

Biology
What can you say about the amount of hydrogen ions relative to the amount of hydroxide ions in a solution that has a pH of 2?

Molality
An aqueous solution contains 8.7% NaCl by mass. 1. Calculate the molality of the solution. 2. Calculate the mole fraction of the solution.

Gen. Chemistry lab
Trying to find mass percent of acetic acid in 25 drops of .683M NaOH solution are required to neutralize 10 drops of cleaning vinegar. Assume that the density of the cleaning vinegar is the same as the density of regular vinegar which is 1.05 g ml-1 You need to clean up the ...

Chemistry Lab
You need 123 mL of 0.245 M NaOH solution for a certain experiment, and the only solution available in the lab is 1.252 M. How many mL OF THE 1.252 M NaOH would you need?

Chemistry
What is the normality of a solution which contains 4.03-g of sodium carbonate in 300.-mL of solution?

science
What is then volume in mL of then solution 3.04g of sodium chloride from a 0.110 M solution?

chemistry
normality of a solution containing 2g sodium carbonate in 250mL solution

Chemistry
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 10.23 solution.

chemistry
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 10.23 solution.

Chemistry
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 10.10 solution.

Chemistry
How many milliliters of 0.250 M sodium hydroxide are needed to titrate 35.0 mL of 0.425 M hydrofluoric acid?

chemistry
How many moles of sodium hydroxide are needed to react with 148.0 g of Iron (III) bromide?

College chemistry
A buffered solution is made by adding 50.0 g NH4Cl to 1.00 L of a 0.70 M solution of NH3. Calculate the pH of the final solution. (Assume no volume change.)

Chemistry 2
Calculate the molarity of the following aqueous solution of 25.0 grams of MgBr2 in 0.355 L solution? Did I work this right? 25gMgBr2/184.113 gMgBr2 =.1357861748 mol MgBr2 then: .1357861748 mol MgBr2/0.355 L =.382 M

math Steve form your help
50gm of a mixture of ca(OH)2 is dissolved in 50ml of 0.5N hcl solution, the excess of hcl was titrated with 0.3N -naoh. The volume of naoh used was 20cc. Calculate % purity of ca(OH)2 The answer 41.35% Who helps me step by step

Chemistry
If the same solute is dissolved in two different solvents to the same concentration and the same temperature, the osmotic pressure ____ My answer & reason: solution A has a smaller molecular weight and therefore, a larger Molarity and higher osmotic pressure (pi=iMRT) ...

chemistry
what final volume in liters of a 2.5 m solution of sodium nitrate can be made using 25.0g of solution

Chemistry
Describe how to prepare an aqueous 100 mL stock solution of 2 M sodium chloride solution.

Chemistry
1. I have 2% NaCl solution. From this I want to prepare a solution to contain 0.1 g of the sodium compound in 2 mL of water. Thanks

chemistry
269 mL of a 0.2089 M sodium carbonate (Na2CO3) solution is prepared and labelled "Solution A".

Chemistry
A solution contains 0.284 M sodium nitrite and 0.257 M nitrous acid. What is the pH of the solution?

Chemistry
50 L of your 0.05M sodium. chloride solution, what volume of 1.25M solution would be necessary?

College Chemistry
A 20.0 Ml sample of sulfuric acid is titrated with 25.0 ML of 1.0 M NaOH solution. What is the molarity of the sulfuric acid? H2SO4+ 2NaOH yields Na2SO4 + H2O

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