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September 29, 2016

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: 65,589

chemistry
What is the concentration, in units of molarity, of a 350 mL solution containing 0.298 moles of sodium chloride in water?
September 27, 2011 by Bekah

Chemistry
If the 50.00mL sample from problem 3 above was titrated with EDTA,what volume of a 0.00420 M EDTA solution would be needed to reach the endpoint? (Your answer should be given in milliliters.) (Problem 3 found that .0000625 moles of calcium carbonate were present in the sample)
November 13, 2015 by Alex

Math
1) Solve the equation for p. Identify any extraneous solutions. √p=-1 A) -1 is a solution of the original equation. 1 is an extraneous solution. B) 1 is a solution of the original equation. C) 1 is a solution of the original equation. -1 is an extraneous solution. D) ...
April 22, 2015 by Tia

Chemistry
The approximate concentration of a hydrochloric acid solution is 0.5M. The exact concentration of this solution is to be determined by the titration with 0.5M solution of sodium hydroxide. A 10.00 ml of HCl solution was transferred by pipet to an Erlenmeyer flask. What is the ...
May 17, 2015 by Ericka

analytical chemistry
Any help is greatly appreciated 5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard solution of A with with a concentration 75ppm were added to the flask: 0mL, 0.5mL, 1mL, 1.5mL, 2mL, and 2.5L. The ...
May 8, 2015 by Katy

ap chemistry
A calorimeter contains 20.0 of water at 12.5 . When 2.20 of (a substance with a molar mass of 59.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 27.5 . Calculate the enthalpy change, , for this reaction per mole of . Assume that the...
December 3, 2012 by emily

ap chem
A calorimeter contains 20.0 of water at 12.5 . When 2.20 of (a substance with a molar mass of 59.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 27.5 . Calculate the enthalpy change, , for this reaction per mole of . Assume that the...
December 3, 2012 by JOSH

Chemistry
A 1.0m solution of LiCl decreases the freezing point of water more than a .10 m solution of LiCl. Explain why based on colligative properties. I know that the 1.0m solution would decrease it more, but cannot explain why. Any help is appreciated!
May 2, 2012 by Anonymous

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?
November 6, 2013 by Anonymous

chemistry
1. A student wanted to measure the amounts of (Ca2+) in the human blood. She got 1.00ml which she treated with Na2C2O4 solution. The resulting Ca2C2O4 precipitate was filtered and dissolved in dilute H2SO4 to release C2O42- into solution and allow it to be oxidized. The ...
August 5, 2011 by victor2

Chemistry
Titration was used to determine the molarity of acetic acid in vinegar. A primary standard solution of KHP was used to standardize the NaOH. 1. When performing this experiment, impure KHP was used to standardize the NaOH solution. If the impurity is neither acidic or basic, ...
March 28, 2014 by Sandy

chemistry
In a coffee-cup calorimeter, 1.91 g of NH4NO3 is mixed with 75.0 g of water at an initial temperature of 25.00oC. After the solution of the salt, the final temperature was 20.94oC. Assuming the solution has a heat capacity of 4.18 J/(goC) and assuming no heat loss to the ...
October 9, 2012 by Shawn

CHEMISTRY HELP!
(1) A beaker with 165 mL of an acetic acid buffer with a pH of 5.00 is sitting on a bench top. The total molarity of the acid and conjugate base in the buffer is 0.100M. A student adds 7.20mL of a 0.320M HCl solution to the beaker. How much will the pH change? The pka of ...
July 13, 2009 by Ashley

Chemistry
I am hoping to receive help getting started with this problem, possibly some steps in the correct direction. Here is the question: 5.0mLs of a 6.0M solution of HCl was transferred to a 1000ml volumetric flask and diluted to volume w/ water. 50mLs of this solution was then ...
June 9, 2009 by Juggernaut

chemistry
A total of 2.00 \rm mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 115 g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7 ^\circ \rm C. What is the enthalpy of this reaction? Assume that...
October 2, 2011 by Anonymous

chemistry
Finding molarity and molality(best answer)? An aqueous solution is prepared by diluting 3.30 mL acetone,(d= 0.789g/mL) with water to a final volume of 75.0 mL. The density of the solution is 0.993 g/mL. What is the molarity, molality and mole fraction of acetone in this solution?
October 7, 2011 by sam

chemistry
ihave two solutions. in the first solution , 1.0 moles of sodium chloride is disslved to make 1.0 liters of solution . in the second one, 1.0 moles of sodium chlorine is added to 1.0 liters of water.is the molarity of each solution the same?
February 13, 2012 by wendy

math steve for your help
25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of this solution required 20ml of N/10 kmn04 solution for complete oxidation. Calculate the percentage of fes047h20 in the sample The answer 88.96% My ...
December 29, 2013 by Fai

College Chemistry
A student weighs out 0.568 g of KHP (molar mass=204g/mol) and titrates to the equivalence point with (36.78 cm cubed which is 3) of a stock NaOH solution. What is concentration of stock NaOH solution? KHP is an acid with one acidic proton. The word cubed is in word form ...
October 22, 2010 by Elleni

Chemistry
It says prepare a theoretical titration of 25 mL of 0.1037 M formic acid (HCOOH; pKa= 3.75) solution (diluted to 100mL volume with deionized water) by 0.0964 M solution of KOH. It asks to determine the volume of KOH solution needed to reach equivalence point. But I don't even ...
October 25, 2010 by Anonymous

chemistry
An AgNO3 solution (44 mL/0.44 M) has been mixed with an NaCl solution (83 mL/1.35x 10^-2 M) a)Determine the ion product of the precipitate(potential precipitate) b) Would a precipitate be created? The Ksp of AgCl(s) proves to be 1.8 x 10^-10
April 9, 2008 by Joseph

Chem again sorry
A solution of sodium chloride in water has a vapor pressure of 18.3 torr at 25C. What is the mole fraction of NaCl in this solution? __________ What would be the vapor pressure of this solution at 45C? The vapor pressure of pure water is 23.8 torr at 25C and 71.9 torr at 45...
November 30, 2008 by Dina

Chemistry 101
A student needs to run an experiment to determine the amount of substance in the solution. As more of the substance is dissolved, the more red the solution becomes. He is planning on using an absorption spectrometer to measure how much of a wavelength would be absorbed when ...
June 1, 2009 by Gweedo8

science
OBJECTIVE: to find out which of two indicators, methyl orange or phenolphthalein, gives more reliable and consistent results in the titration of H3PO4 with NaOH. REQUIREMENT: (1). Phosphoric acid solution of unknown concentration. (2). Standard NaOH solution. (3). Methyl ...
October 28, 2013 by somiah

Chemistry
A 38.5 mL sample of HBr is titrated with 112 mL of 1.05 mol/L KOH. The density of the HBr solution is 1.75 g/mL. Calculate the percentage by mass of the HBr in the sample. How come we don't use density*volume to find the moles of HBr?
December 2, 2015 by Sam

chemistry
how do you solve this What is the pH of the solution created by combining 2.60 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)? mL NaOH 2.60 pH wHCl: _ pH wHC2H3O2 : _ Complete the table below: What are the pH values if you ...
July 12, 2010 by Jin

Chemistry
Determine the volume, in milliliters, required to prepare each of the following diluted solutions. 40.0mL of a 2.75M KNO3 solution using a 1.00M KNO3 solution 45.0mL of a 2.90M H2SO4 solution using a 6.00M H2SO4 solution 0.700L of a 2.10M NH4Cl solution using a 5.00M NH4Cl ...
April 7, 2015 by Chan

Chemistry
How many grams of glycerin C3H8O3 must be dissolved in 375.9g of water at 100 degrees Celsius to reduce the pressure of water above the solution to 714.6mmHg. The solution is a non-volatile compound
April 23, 2011 by Jude

chemistry! URGENT
A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 10.0 mg of fluoxymestrone in enough water to give a total volume of 500.0 ml. A 100.0 micro liter aliquot (portion)of this ...
December 7, 2011 by Lindsay

chemistry
calculate the molarity of each of the following solutions. Help!! (a) 0.36 mol of LiNO3 L of solution (b) 70.7 g C2H6O in 2.25 L of solution (c) 11.56 mg KI in 114.2 mL of solution
November 20, 2010 by Stacy

Chemistry
John has 300 mL of 0.65 M NaCl solution. Mary has 500 mL of 0.35 M solution. What is the concentration of the solution if they pour them together
November 21, 2010 by Tracy

Algebra 1 Honors
2x+4=5(x+1) -2(x+2) Would this be identity (all numbers are the solution), No solution (no real number solution), or can it be solved?
October 9, 2011 by Stefanie

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
November 29, 2012 by Bea Alonzo

chem
A solution is prepared by dissolving 15.0 g of pure HC2H3O2 and 15.0 g of NaC2H3O2 in 600 mL of solution (the final volume). What is the pH of the solution?
February 22, 2015 by Jen

Chemistry
If you mix 20.0mL of a 3.0M solution with 30mL of a 5.00M solution, determine the concentration in molarity of the new solution.
April 16, 2015 by Chris

Chemistry
Consider a 500mL solution containing 2.010^-5 mol HCl what is the pH of the above solution? If the solution is diluted to 1.5 L what will be the new pH?
May 29, 2016 by Mayra

math
solve the system. Give the x-value of the solution. 3x-5y=16 and -9x+15=48 answer key: 7 0 no solution infinite number solution
July 9, 2016 by Fe

chemistry
100 mL of 0.05 M NH3 solution are added to 60 mL of a 0.1 M solution of the same compound.Determine the concentration of the final solution.
July 10, 2016 by Anonymous

Chemistry
If vinegar sample #1 requires 29.05 mL of NaOH solution to reach an endpoint, what volume should be required for samples #2 and #3?
November 2, 2014 by Gladys

chemistry
1 In the reaction of potassium permanganate and iron salt in acidic medium, how many moles of manganese reacted with iron? 2 moles of Mn with 1 mole of Fe 1 mole of Mn with 5 moles of Fe 1 mole of Mn reacts with 1 mole of Fe 5 moles of Mn reacts with 1 mole 2 Which of the ...
August 24, 2015 by mikel

Science
A solution is prepared by dissolving 38 g of H2S04 in 220 g water. If the density of the solution is 1.96 g/ml, find its: molality molarity mole fraction of the components of the solution normality This assignment is needed tomorrow. I really don't know the answer. I tried ...
January 26, 2014 by Drenju

holy school
H2 S + HNO3 --------> NO + H2 O + S 150 g of hydrogen sulfide are dissolved in 3500 mL of water. a. What is the molarity of the hydrogen sulfide solution? b. How many grams of sulfur can be produced from 50 mL of this solution? c. 22.4 L of nitrogen monoxide gas are ...
March 3, 2013 by mamta

chemistry
You have a solution that contains 0.25g grams of oxalic acid dissolved in 100 mL of water. This solution is placed in a separating funnel, and the 100 mL of butanol is added to the solution. calculate the mass of oxalic acid in the organic solvent
June 16, 2016 by Grace

Chemistry
I have a 7 mL solution with 3 mL of H2O added to the solution. How would I figure out the molarity of the solution?
March 31, 2008 by TAG

chemistry
a saturated solution of milk of magnesia, Mg(OH)2, has a pH of 10.5. What is the hydronium concentration of the solution? is the solution acidic or basic?
July 14, 2009 by angela

algebra 2
How much of an 18% solution of sulfuric acid should be added to 360 ml of a 10% solution to obtain a 15% solution?
June 22, 2010 by Derron

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
August 10, 2010 by chris

chemistry
Mix together 5.0 mL of solution #1 1.0 M HA with 35 mL of solution #2 1.0 M NaA in a small Erlenmeyer flask. What are the concentrations of HA and A in solution #7?
August 17, 2010 by kris

Chemistry
How many grams of I2 are present in a solution if 38.55ml of 0.160M Na2S2O3 solution is needed to titrate I2 the solution?
November 19, 2012 by Michi

chemistry
1.64 L of a 4.95 M solution is diluted to form a 2.58 M solution. (Rounded to 3 sig figs) there are __________ L of the 2.58 M solution formed.
February 5, 2014 by Pooja

Chemistry
How many grams of I2 are present in a solution if 39.85mL of 0.160M Na2S2O3 solution is needed to titrate the I2 Solution
March 14, 2014 by Jackie

chemistry
how we prepare a 4M solution of NaCl in 100ml and after this we dillute this 4ml solution to make3.8M solution.
July 14, 2015 by nisha

Chemistry
A buffer is made by mixing 100 mL of 0.25 M acetic acid (CH3COOH) and 150 mL of 0.10 M sodium acetate (CH3COONa). Calculate the pH of the solution after 0.5g of solid NaOH is added to the solution (Given Ka (CH3COOH) =1.8 x 10-5)
August 19, 2015 by Jaden

Chemistry
A solution is prepared using 15.0 mL of 1.0 M HCl and 20.0 mL of 0.5 M HNO3. The final volume of the solution is 1.25 L. What are the [H3O+] and [OH-] in the final solution? What is the pH of the final solution?
May 22, 2010 by Heather

chemistry
A solution of salt in water conducts electricity, but a solution of sugar does not Explain why
May 28, 2009 by john

chemistry
8.00 of are dissolved in water to make 4.00 of solution. What is the concentration of hydronium ions, , in this solution?
November 2, 2009 by katy

chemistry
8.00 g of are dissolved in water to make 3.00 l of solution. What is the concentration of hydronium ions, , in this solution?
November 15, 2009 by leo

chemistry
How much water must be added if you want to make 1L of solution that is 6M, into a 3M solution
April 29, 2010 by sarah

chemistry
What is the pH of a solution prepared by dissolving 7.5g HCl in water to make 375mL of solution?
February 27, 2011 by Brittany

chemistry
a certain solution contains 0.35 mol of HCl in 1200 mL of water. What is the pH of the solution?
March 7, 2011 by leah

chem
density of 20% by mass C2H6O2 solution in water is 1.03 g/mL. find the molarity of the solution.
July 21, 2011 by lily

Chemistry
9. A solution has 48 grams of LiOH dissovled In 100 L of water. What is its [OH-]? 10. What is the pH of the solution in question 9?
February 26, 2014 by Emma

chemistry
8.22 g of CuNO3 is dissolved in water to make a 0.590M solution,what is the volume of the solution
March 17, 2014 by Nicholas

Chemistry
if you dissolve 25.5 g of KBr in enough water to make 1.75 L of solution, what is the molarity of the solution
May 13, 2014 by Lori

chemistry
If 8.16 g of CuNO3 is dissolved in water to make a 0.500 M solution, what is the volume of the solution?
November 9, 2014 by Dustin

chemistry
If 7.63 g of CuNO3 is dissolved in water to make a 0.180 M solution, what is the volume of the solution?
February 7, 2015 by Felicia Fancybottom

chemistry
If 5.29 g of CuNO3 is dissolved in water to make a 0.370 M solution, what is the volume of the solution?
November 18, 2015 by Rasschael

pcc
A volume of 40.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 21.7mL of 1.50 M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)→K2SO4(aq)+2H2O(l)
July 15, 2013 by jose

Chemistry
A volume of 80.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 21.7mL of 1.50 M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)→K2SO4(aq)+2H2O(l)
February 24, 2014 by carley

chemistry 11
if a solution is contanimated with a chemical that causes a larger amount of solid, opaque particles floating in the solution, would the absorbance read too high or too low, and why?
November 3, 2012 by Anna

Chemistry
I am very confused on this problem. Any help would be great: 50 g of silver nitrate is mixed with 50 g of hydrochloric acid in a water-based solution. A white precipitate forms (silver chloride.) The solution is filtered and the white precipitate collected and dried. The dried...
June 23, 2009 by Ted

chemistry
340. mL of hydrochloric acid (HCl) acid is exactly neutralized with 500. mL 0.700 M NaOH solution. What is the concentration of the acid solution?
June 1, 2014 by Anonymous

algebra 2
can somebody tell me how I am to solve this problem? x+8)(x-19)(x+3)>0 A. The solution set is {x|___} B. The solution is all real numbers. C. There is no solution.
June 18, 2010 by Nick

chemistry
What is the molarity of a potassium hydroxide solution if 38.65 mL of the KOH solution is required to titrate 25.84 mL of 0.1982 M hydrochloric acid solution?
November 10, 2010 by Anonymous

chemistry
You have a 10 M acidic solution. However, you need that solution to be 0.25 M. How many ml of 10 M should be diluted to obtain 300 ml of 0.25 M acid solution?
January 3, 2011 by markees

algebra
a lab technician has a 15% alcohol solution. She wants to make 100 gallons of a 29% solution. How much of the 15% solution should she use?
February 15, 2012 by matt

chemistry
Copper container can be used to store (A) Al2(SO4)3 solution (B) ZnSO4 solution (C) FeSO4 solution (D) All of these
March 21, 2013 by PARUSH

chemistry
how many millimeters of a 5.15 M CH3OH stock solution are needed to prepare 375 mL of a solution having 7.50 mg of methanol per mL of solution
September 29, 2013 by Anonymous

chem
if 14.66ml of a standard .2616M KOH solution reacts with 57.5ml of CH3COOH solution, what is the molarity of the acid solution?
September 9, 2014 by sara

chemistry
What is the molarity of the following solutions? A. 0.96 g MgCl2 in 500 mL solution B. 9.33 g Na2S in 450 mL solution C. 2.48 g CaF2 in 375 mL solution
April 7, 2016 by justin

chemistry
Calculate the mass of salts needed for constructing a buffer using potassium monobasic phosphate and potassium dibasic phosphate with the total concentration of 100 mM. The solution is to be prepared in DI water and the pKa value for potassium monobasic phosphate is 7.21 and ...
November 14, 2010 by dave

Chemistry
At 25 C, the density of a 40.0% (m/m) solution of sucrose, C12H22O11, in water is 1.18 g/mL. What is the molarity of this solution?
February 16, 2014 by Michael

chemistry
f 8.77 g of KI are dissolved in enough water to make 4.75 L of solution, what is the molarity of the solution?
August 10, 2014 by molly

chemistry
At 25 C, the density of a 60.0% (m/m) solution of sucrose, C12H22O11, in water is 1.29 g/mL. What is the molarity of this solution?
March 11, 2016 by Anonymous

Chemistry
a 40.0 ml sample of ca(oh)2 was titrated with 0.0704 m hcl. the volume of hcl needed to reach equivalence point was 18.2 ml. what was the concentration of ca2+ present in the original solution?4
April 22, 2015 by Dahnrae

Quick math help
Can someone check my answers on these? Thank you!! Solve each system using addition or subtraction. 1. x+y=8 x-y=4 For the solution I got (6,3) 2. x-3y=7 x+2y=2 For the solution I got (4,-1) 3. 5s+2t=6 9s+2t=22 For the solution I got (-4,13) 4. 2x+3y=13 x-3y=2 For the solution...
January 22, 2014 by Anonymous

Biology
In class, I did an experiment with water and iodine solution in a beaker and also starch in a dialysis tube tied and placed in the beaker. There were discussion questions I couldn't answer surely... please check my answers. 1. a)Use your results to determine the direction of ...
April 3, 2012 by CrissyXD

science, chemistry
OBJECTIVE: to find out which of two indicators, methyl orange or phenolphthalein, gives more reliable and consistent results in the titration of H3PO4 with NaOH. REQUIREMENT: (1). Phosphoric acid solution of unknown concentration. (2). Standard NaOH solution. (3). Methyl ...
November 5, 2014 by elijah

Chemistry (Titrations)
In order to standardize a KMnO4 solution, 0.2848 g Fe(NH4)2(SO4)26H2O was dissolved in 25 mL 0.18 M H2SO4. The KMnO4 solution was added to the Fe(NH4)2(SO4)26H2O solution until a pale pink color persisted. The titration took 24.2 mL of KMnO4 solution. What is the ...
November 30, 2014 by Bill

chemistry
what is the molarity of 20 grams of HCI mixed with water to make 1 liter of solution
June 7, 2010 by jhjmjj

math
a chemist has a solution that is 20 percent alcohol by volume. which of the following expressions represents the percent of alcohol by volume when m litersof the solution is mixed with h liters of pure alcohol and p liters of water? a) 20(m+h+p)% b) 20(m+h)/m+h+p) c)20?h+p d) ...
July 23, 2009 by Jason P

chemistry
What is the ion in the resulting solution? 100.0 mL of 0.015 M K2CO3 and 100.0 mL of 0.0075 M BaBr2? 25 mL of 0.57 M Ni(NO3)2 and 100.0 mL of 0.150 M NaOH
October 24, 2011 by dude

chemistry
A flask containing 5.00mL of 3 M HCl solution requires 14.45mL of 1.00 M NaOH for titration. How many moles of HCl are present in the solution? The density of 3 M HCl is 1.05g/mL
June 12, 2010 by John

chemistry
A flask containing 5.00mL of 3 M HCl solution requires 14.45mL of 1.00 M NaOH for titration. How many moles of HCl are present in the solution? The density of 3 M HCl is 1.05g/mL
June 13, 2010 by John

Chemistry
You need 3.0-L of 0.13 M salt solution. All you can find is 0.40 M salt solution. How much of that solution will you need in order to make your desired solution (in liters)?
February 16, 2011 by billy

Chemistry
If solution A had a pH of 8, and solution B had 1,000 times this hydrogen ion concentration what would be the pH of solution B, and would solution B be acidic or basic?
November 14, 2011 by Kristin

MATH help
Which of the ordered pairs in the form (x, y) is a solution of this equation? 5x-y/3=13 (2,-9) ,(3,-6) A. Neither is a solution. B. The first is not a solution, but the second is. C. The first is a solution, but the second is not. D. Both are solutions.
October 29, 2015 by flaca

Chemistry
The density of a 22.0% by mass ethylene glycol (C2 H6 O2) solution in water is 1.03 .Find the molarity of the solution.
February 11, 2009 by HELP PLEASEEE

chemistry help asap
A solution of salt in water conducts electricity, but a solution of sugar does not. Explain why?
May 20, 2009 by tom

Chemistry
If 7.83 g FeCl3(s) is dissolved in enough water to make 2.50 L of solution, what is the concentration of Fe3+ in the solution?
October 9, 2009 by Kevin

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