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February 10, 2016

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

Number of results: 60,270

Chemistry please help!
Please help. I have no idea how to do these 4 homework problems. 1- How many milliliters of 0.140 M HCl are needed to completely neutralize 42.0mL of 0.106 M Ba(OH)2 solution? 2-How many milliliters of 0.123 M H2SO4 are needed to neutralize 0.250 g of NaOH ? 3-If 55.2 mL of ...
February 22, 2010 by Robert

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
May 4, 2011 by Zarion Gibbs

chemistry
In a coffee cup calorimeter, 50 mL of 0.1 M HCl and 50 mL of 0.1 M NaOH are mixed to yield the following reaction: HCl + NaOH  NaCl + H2O. The two solutions were initially at 22.1 oC and the final temperature is 24.2 oC. Calculate the heat that accompanies this ...
March 16, 2015 by Diana

Chemistry - PLEASE HELP!!!
25g NaOH is dissolved in 10 ml h20 and added to 100 ml volumetric flask. Calculate the concentration in molarity.
May 17, 2015 by Marie

Science/Chemistry
Zn(OH)2 solid (molecular mass = 99.41 amu) is added to 0.500 L of 0.50 M HBr. The resultant solution which is acidic, requires 185 mL of 0.500 M NaOH for neutralization. Calculate the mass (in mg) of Zn(OH)2 that was originally added (problem 53 in Purdue test bank)
September 28, 2008 by Kelsey

Chemistry
The number of moles NaOH needed to reach the equivalence point is mol, which means we must add liters of NaOH. The total volume of solution at the equivalence point will be liters. From the above information, the molarity of NaF at the equivalence point is M.
March 13, 2013 by Elizabeth

chemistry
I need some help with calculating percent yield and percent purity of aspirin. Here's my data (questions follow): SYNTHESIS Mass of salicylic acid.., 2.0 g Volume of acetic anhydride.., 5 mL Mass of watch glass.., 22.10 g Mass of aspirin and watch glass.., 28.01 g Mass of ...
March 24, 2007 by Jim

chemistry
A 47.7-g sample of SrCl2 is dissolved in 112.5 mL of solution. Calculate the molarity of this solution.
November 20, 2010 by Jessica

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

chemistry
calculate the molarity of the solution- 0.56 mole of BaCl2 in 100.0mL of solution.
February 8, 2011 by brandy

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.
July 15, 2011 by Kelci

chemistry
Calculate the molarity of a solution containing 58.5mg of NaCl in 2.50mL of solution.
November 30, 2012 by Emmanuel

chemistry
Calculate the molarity of a solution that contains 48g of NaCl in 250ml of solution.
February 7, 2013 by James

Chemistry
Which of the following solution should be mixed with 50.0 mL of 0.050 M HF solution to make an effective buffer? A) 50.0 mL of 0.10 M NaOH B) 25.0 mL of 0.10 M NaOH C) 50.0 mL of 0.050 M NaOH D) 25.0 mL of 0.050 M NaOH
April 1, 2012 by Anon

chemistry
Calculate the molality of a 2.50 molarity NaCl solution. Density of solution = 1.08 g/ml.
March 4, 2010 by Anonymous

chemistry
calculate the molarity of each of the following solution: 2.00 mol glucose in 4.00 L solution.
June 25, 2010 by Ana

chemistry
calculate the molarity of each of the following solution: 2.00 mol glucose in 4.00 L solution.
June 25, 2010 by Ana

chemistry
calculate the molarity of a solution in which 22.6g C6H12O6 is dissolved in 1.08L of solution
October 13, 2010 by Stacy

chemistry
Calculate the molarity of a solution prepared by dissolving 25.0 g NaCl in 1.0 L solution.
April 6, 2011 by Marilyn

chemistry
A solution contains 33.3 g H3PO4 in 448 mL of solution. Calculate its molarity.
November 16, 2011 by Anonymous

Chemistry
This question is based on an experiment to determine the mass of ASA. Information from the experiment : ASA is a weak acid with a Ka value of 3.2 x 10^-4. An ASA tablet has an approximate mass of 500 mg. The experiment used a titration with a standardized 0.100 mol/L ...
June 4, 2013 by Kelsey

chemistry
calculate the molarity of a solution containing 0.5050 mol of solute in 400.0 ml of solution
September 13, 2011 by Anonymous

chemistry
Calculate the molarity of a solution prepared by diluting 200.0 mL of 4.0 M HCl to 500.0 mL of solution a. 1.1 M b. 1.6 M c. 2.7 M d. 10. M
December 11, 2011 by anonymous

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

science
Calculate the molarity of a solution which contains 6.456g of Na2CO3 dissolved in 250.0 ml of solution.
February 1, 2015 by Steph

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 (...
August 10, 2012 by Cindy

Chemistry
CONCENTRATION OF NaClO IN COMMERCIAL BLEACH. Bleach comes as 6%(mass/volume) solution of NaClO. Calculate the Molarity of NaClO in bleach to three significant figures ( you need molar mass of NaClO)
February 11, 2013 by Jessica

chemistry
what is the molarity of the solution which contains 5.0g of NaOH(formar weight=40g/mole)dissolved in water to make 200 ml of soluitons?
September 4, 2009 by DJ

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?
August 8, 2013 by joshua

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....
June 18, 2012 by Lemun

chemistry
What mass of sodium hydroxide pellets must be poured into a waste drum containing 20.0 L o 3.0 mol/L sulphuric acid to completely neutralize the waste acid solution? Write a balanced chemical equation for this reaction. okay, so here is the work I already did my balanced ...
December 15, 2014 by julie

Chemistry
Help needed with a calorimeter lab. I have to measure the enthalpy of a neutralization reaction between NaOH and HCl as well as find the concentration of NaOH the following ways. - using the mass and volume of NaOH - Using calorimetric data assuming no heat lost to calorimeter...
November 17, 2014 by Bibi

Chemistry
A 1X Phosphate Buffered Saline solution was prepared by adding 1.44g of Na2HPO4 and 1.44g of H2PO4- to 800mL of water. Additional components were dissolved in the solution: 8g of NaCl, 0.2g of KCl and 0.24g KH2PO4. The resulting buffer solution had a pH of 7.2. a. Calculate ...
April 28, 2015 by Nicole

chemistry structures
what is the stucture for heptanoic acid i need a to draw it CH3CH2CH2CH2CH2CH2COOH http://en.wikipedia.org/wiki/Enanthic_acid Molarity Calculate the molarity of 9.25 mol HCL in 2.25L of solution. mols/L = Molarity
April 4, 2007 by kim

chem
Consider the reaction that occurs on mixing 50.0 mL of 0.560 MNaHCO3 and 50.0 mL of 0.400 M NaOH at25oC. (a) Write a balanced net ionic equation for thereaction. (b) What is the pH of the resulting solution? (c) How much heat (in joules) is liberated by thereaction? (standard ...
March 29, 2011 by pal

chemistry
When 25.0 mL of 1.0 M H2SO4 is added to 50.0 mL of 1.0 M NaOH at 25.0 C in a calorimeter, the temperature of the aqueous solution increases to 33.9 C. Assuming the specific heat of the solution is 4.18 J/(gC), that its density is 1.00 g/mL, and that the calorimeter itself ...
March 14, 2013 by nobody

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
November 12, 2010 by Liza

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

science
Calculate the molarity of a solution that contains 0.175 mol ZnCl2 in exactly 136 mL of solution.
May 2, 2012 by mollye

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
August 10, 2013 by Aman

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
January 19, 2013 by chm 101

Chemistry
Calculate the molarity of the H3PO4 solution?This the question Answer has to be: MH3PO4 = ? mol/L but I don't know how to calculate it. Thanks for help so far
October 26, 2014 by Duke

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
August 10, 2013 by Aman

Chemistry
calculate the molarity of cl- ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride
March 29, 2015 by Amy

chemistry
Calculate the molarity of a solution containing 40.0 g glucose (C6H12O6) in enough ethanol (C2H5OH) to make 40.0 mL of solution.
February 10, 2010 by CC

chemistry
calculate the molality of one molarity solution of sodium nitrare. the density of solution is 1.25g cm cube.
June 20, 2011 by joyti

chemistry
calculate the molality of one molarity solution of sodium nitrare. the density of solution is 1.25g cm cube.
June 20, 2011 by joyti

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

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

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

intro to chem
The molarity of an aqueous solution of potassium hydroxide, KOH, is determined by titration against a 0.197 M HI solution. If 28.4 mL of the base are required to neutralize 18.6 mL of HI, what is the molarity of the KOH solution?
August 13, 2013 by Meseret

Chemistry
10% (m/m) Sodium Hydroxide solution, NaOH(aq) is used to break down wood fibre to make paper. A) What mass of the solute is needed to make 250mL of 10% (m/m) solution? B) What mass of solvent is needed? C) What is the molar concentration of the solution?
May 2, 2011 by Saman

Grade 11 Chemistry
calculate the molarity of cl- ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride
March 28, 2015 by Sim

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 ...
February 22, 2010 by Trixie

chemistry
In a laboratory experiment, a 18.0 ml sample of NaCl solution is poured into an evaporating dish with a mass of 24.00 g. The combined mass of the evaporating dish and NaCl solution is 37.15g. After heating, the evaporating dish and dry NaCl have a combined mass of 26.50 g. If ...
October 9, 2010 by Allyse

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 ...
March 30, 2013 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 ...
March 30, 2013 by Katie

Chemistry 12
15. The concentration of hydroxide ions in a solution of nitric acid 0.2 M is: a. 2 x 10-14 M b. 5 x 10-14 M c. 5 x 10-7 M d. 2 x 10-1 M 16. Aqueous solutions of strong acids and strong bases: a. are good electricity conductors b. make litmus paper become red c. have a pH of 7...
December 3, 2012 by Need Help

AP Chemistry
A buffer solution contains .4mol of formic acid, HCOOH and a .6mol of sodium formate, HCOONa, in 1L of solution. Ka of formic acid is 1.8 x 10^-4. a) calculate pH b) if 100ml of this buffer solution is diluted to a volume of 1L with pure water, the pH does not change. Discuss ...
April 25, 2010 by Jessie

Chemistry
A student was given 100mL of HCL solution in a 250mL beaker and told that the HCL was 0.11M. The student was also given phenolphthalein indicator and 250 ML of 0.1234 M NaOH. The student first filled a buret with NaOH solution. The student then placed an appropriate volume of ...
November 21, 2013 by Lenny

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

chem
Calculate the molarity of a solution made by dissolving 0.150 in enough water to form exactly 730 of solution
April 18, 2012 by joe

college chemistry2
calculate the molarity of a solution containing 20.0g of sulfuric acid in 500 ml of solution?in a solving problem form?
August 5, 2012 by raymond benzon

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.
December 15, 2012 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.
April 3, 2013 by kelli

chemistry
15.0 mL of an iodine solution of unknown molarity was titrated against a .001 M solution of S2o32-. The blue black iodine-starch complex just disappeared when 20.2 mL of thiosulfate was added. What is the exact molarity of the Ia solution
April 23, 2015 by chem3a

general chem
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution. (b) How many moles of KBr are present in 150 mL of a 0.275 M solution? (c) How many milliters of 6.1 M HCl solution are needed to obtain 0.100 mol ...
October 9, 2011 by rob

general chem
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution. (b) How many moles of KBr are present in 150 mL of a 0.275 M solution? (c) How many milliters of 6.1 M HCl solution are needed to obtain 0.100 mol ...
October 9, 2011 by rob

Chemistry
To a beaker containing 200 mL of a solution of CuSO4 was added 10.0g of magnesium metal. When the reaction was complete, a mixture of Mg and Cu having a mass of 14.50g remained in the beaker. Calculate the molarity of the original CuSO4 solution. I understand that I need to ...
February 17, 2012 by Kay

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
Find the concentration of the polyprotic weak acid given the following: - 1 equiv needs 6 ml NaOH, 2 equiv needs 18 ml NaOH, 3 equiv needs 28 ml NaOH - pKa1 = 2, pKa2 = 3.9, pKa3, 10 - Molarity of NaOH = 0.175 - Total volume of NaOH = 28 ml - Volume of weak acid = 30 ml Please...
October 7, 2013 by OR

Chemistry
Find the concentration of the polyprotic weak acid given the following: - 1 equiv needs 6 ml NaOH, 2 equiv needs 18 ml NaOH, 3 equiv needs 28 ml NaOH - pKa1 = 2, pKa2 = 3.9, pKa3, 10 - Molarity of NaOH = 0.175 - Total volume of NaOH = 28 ml - Volume of weak acid = 30 ml Please...
October 7, 2013 by OR

Normality headache
I do not fully grasp the idea of Normality. What are the normality and the molarity of a sulfuric acid solution if 30mL of it are required to completely neutralize 24mL of 0.02N NaOH? (one of them, N or M, is never equation dependent because...??) HCl(aq) + NaOH(aq)--> NaCl...
June 16, 2006 by Kizner (chem)

Chemistry
Calculate the pH of the resulting solution if 21.0 mL of 0.210 M HCl(aq) is added to a) 26.0 mL of 0.210 M NaOH(aq) b) 31.0 mL of 0.260 M NaOH(aq)
September 4, 2011 by Ada

chemistry
Calculate the pH of the resulting solution if 30.0 mL of 0.300 M HCl(aq) is added to (a) 35.0 mL of 0.300 M NaOH(aq). (b) 40.0 mL of 0.350 M NaOH(aq).
April 10, 2012 by anon

Chemistry
Calculate the pH of the resulting solution if 25.0 mL of 0.250 M HCl(aq) is added to (a) 35.0 mL of 0.250 M NaOH(aq). (b) 15.0 mL of 0.350 M NaOH(aq).
April 30, 2014 by Janavi

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
1.)An aqueous solution is 34.0% H3PO4 by mass and has a density of 1.207 g/mL. What is the molarity of the solution? AND what is the molality?
February 16, 2010 by anonymous

College Chemistry
A solution of sulfuric acid is 40.0% by mass and it has a density of 1.30g/mL, what is the molarity of the solution?
February 3, 2011 by Anonymous

Chemistry
What is the molarity of an aqueous solution that is 6.44% glucose (C6H12O6) by mass? (Assume a density of 1.03 g/mL for the solution.)
March 16, 2014 by Shelby

Chem
I did an experiment were I added some water and KHP into a beaker and phenophalene [sp?]. It was a titration lab. We slowly added calciuum hydroxide into the beaker and waited till the solution turned into a faint pink. The question is asking me to find the number of mols of ...
July 22, 2009 by Lena

chemistry
A 3.664 g sample of monoprotic acid was dissolved in water and required 20.27 mL of a 0.1578 M NaOH solution for neutralization . Calculate the molar mass of the acid
October 11, 2011 by TROUBLED

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?
May 7, 2013 by Kerapetsi

Chemistry
How do i determine the exact molarity of .2 M of HCL? The molarity of NaOH Used was .2010M used in the titration. And the volume used 10.33 mL used to reach equivalence point. What would be the Molarity of HCL?
March 22, 2011 by Katie

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...
January 26, 2010 by .

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.?
July 2, 2011 by Lahna

Chemistry
What is the molarity of H2SO4 in a solution prepared by adding 15.0 mL of 6.0 Molarity H2S04 to enough water to make 100.0 mL of solution?
October 5, 2011 by Andrea

chem.
A 10.0 mL of vinegar, an aqueous solution of acetic acid (HC2H3O2), is titrated with .5062M NaOH, and 16.58mL is required to reach the equivalence point. A. What is the molarity of the acetic acid? B. If the density of the vinegar is 1.006 g/cm^3, what is the mass percent of ...
March 7, 2008 by Aditya

Chemistry
1. You will need 600mL of a 0.5M NaOH solution. 3M NaOH is provided. Determine how much of the 3M NaOH you will need and write a procedure in your notebook for making the solution.
June 16, 2010 by Lucinda

chemistry
How many milliliters of a 0.250 M acetic acid solution must be added to 50.0 mL of a 0.750 M NaOH solution to produce a buffer solution with pH = 4.500 ? The pH is given by which we can calculate the concentration of [H+] How do we approach the problem from there?
April 22, 2015 by Anon

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
May 7, 2008 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.
May 7, 2008 by katie

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.
January 16, 2013 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.
January 16, 2013 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.
January 16, 2013 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.
March 13, 2013 by Sam

chemistry
Calculate the molarity of a sodium hydroxide solution if 10.42 mL of this solution are needed to neutralize 25.00 mL of 0.2043 M oxalic acid. how do you do the working out
July 18, 2013 by Anonymous

chemistry
Calculate the molarity if a Ba(OH)2 solution if a 37.25ml portion of this solution is neutralized by 45.00mL of 1.500M HCl. You will need the balanced reaction
March 14, 2014 by Anonymous

Chemistry
I'm having trouble with molarity. What is the molarity of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100.0 mL?
November 29, 2010 by Madison

Chemistry
Citric acid is a tri-protic acid with a Ka1 =8.4x10-4 Ka2=1.8x10-5 and Ka3=4.0x10-6. calculate the pH at the 2nd equivalence point in the titration of 85.5 mL of a .21 M citric acid solution with .25 M NaOH. Calculate the pH, after 25.8 mL of NaOH have been added. Calculate ...
December 9, 2015 by Jill

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