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July 29, 2014

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

Number of results: 50,289

Chem.
An aspirin tablet weighing 0.400 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of the solution was ...
April 18, 2009 by Joanne

Chemistry
An aspirin tablet weighing 0.475 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of the solution was ...
January 21, 2011 by

Chemistry
Using the data collected for part c on your data sheet and assuming the density of the vinegar is 1.00g/mL, 1) calculate the molar concentration of acetic acid (CH3COOH) in the vinegar sample using the average volume of NaOH. 2) calculate the mass percent of acetic acid in the...
October 24, 2011 by Josh

Chemistry
A sample of 7.52 grams of Na OH is dissolved into 675 mL of aqueous M NaOH (assume no volume change). This solution is then poured into 1.95 gallons of water. (You may assume that the two volumes can be added.) What is the concentration of NaOH in the final solution? Answer in...
September 23, 2010 by Cheyenne

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

AP Chemistry
If 252mL of 2.5molar HCl solution is added to 343 mL of 2.8 molar Ba(OH)2 solution, what will be the molarity of BaCl2 in the resulting solution?
March 3, 2014 by Anonymous

Chemistry 101
How many milliliters of a 0.14 M NaOH solution contain 0.158 mol of NaOH?
February 3, 2011 by Sky

Chemistry
HF + NaOH =NaF + H2O What will be the pH of a solution produced when 40 mL of 0.25 M HF is titrated with 80 mL of 0.125M NaOH? Ka for HF is 3.5*10^-4
April 21, 2012 by Kristen

chemistry
how many grams of NaOH do you need to prepare a 3.00 x 10^2 mL stock solution of 2.00 M NaOH
October 7, 2010 by jane

CHEMISTRY
1. The use of a more dilute NaOH solution for the standardization of NaOH.
January 16, 2012 by MM

Chemistry
To produce 3.00 L of a 1.9 M solution of NaOH, how many grams of NaOH must be dissolved?
April 11, 2012 by Jessica

Chemistry
How many moles of H2SO4 are required to react with 50 mL of NaOH solution? NaOH is 1M.
June 11, 2012 by Sarah

Chem
How would you prepare 150ml of .5M NaOH starting with a 6M solution of NaOH
November 25, 2012 by Gonzalo

Chem 112
Calculate the pH of a buffer solution prepared by dissolving 0.12 mole of cyanic acid, HCNO and 0.65 mole of sodium cyanate, NaCNO in enough water to make 1.0 liter of solution. [Ka(HCNO) = 2.0 × 10-4] I know that this question has something to do with turning moles into ...
March 21, 2011 by Bridget

physical science
calculate the molar mass ofthe substance. divide it by Avogadros number (6.02x10 to 23 power) .)Hydrogen2 2/(6.02 x 10^23) = ?? hun i don't get it the teacher said first H2x1.00 and then (6.02xio^23) but i still dont get it can you help? I assume you don't understand where the...
October 20, 2006 by Jasmine

chemistry
What is the pH of the solution created by combining 12.30 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 pH wHCl pH wHC2H3O2 12.30 What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was...
May 5, 2008 by Renee

Chemistry
Given Zn(NO3)2 + (NH4)2S = ZnS + 2NH4NO3 (molar mass of Zn(NO3)2 189 g, molar mass of (NH4)2S 68 g), what is the molarity of a 250 ml solution if you have 123 g of zinc nitrate?
March 20, 2013 by Stephen

Chemistry
A mixture contains only NaCl and Fe(NO3). A 0.456g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Fe(OH)3. The precipitate is filtered, dried and weighed. Its mass is 0.107g. Calculate the following: a. the mass of the ...
August 27, 2007 by Marta

chemistry
What is the molarity of hcl is 35 ml is neutralized. By 500 ml of M NaOH?
May 23, 2011 by ray

chemistry
1. NaOH has a MW of 40. A 0.12M solution is made by adding how much NaOH to 100mL of water?
December 8, 2011 by jenny

science
NaOH has a MW of 40. A 0.12M solution is made by adding how much NaOH to 100mL of water?
December 9, 2011 by jake

Chemistry
How much volume(mL)of 2.50 M NaOH(aq)must be added to 25.0 mL of water to produce a 1.50 M NaOH solution? Thanks!
April 23, 2012 by Jack

Chemistry 3A
a titration required 18.38mL of 0.1574 M NaOH solution. how many moles of NaOH were in this volume?
December 6, 2012 by Gurjot

science
What is the mole fraction of NaOH,when 4gm of NaOH contained in 1deci litre of solution?
May 16, 2013 by abhitya

chemistry
How would you prepare 500mL of 6.0M NaOH solution using solid NaOH pallets?
August 8, 2013 by veronica

Chemistry
How much water is needed to prepare 8M of NaOH solution with 1kg of NaOH pellets?
February 26, 2014 by Chong Wee

Chemistry
To prepare 100g of 19.7% by weight solution of NaOH.how many grams each of NaOH and H2O are needed?
June 21, 2014 by akhmal

chemistry
A 0.094 g of CuSO4*5H20is dissolved and diluted to the mark in a 500.0-mL volumetric flask. A 2.00-mL sample of this solution is transferred to a second 500.0-mL volumetric flask and diluted. What is the molarity of CuSO4 in the final solution? To prepare the solution directly...
August 29, 2011 by Anonymous

chemistry
I am not understanding this molarity stuff. Can someone please show me step by step on how to solve this question? What is the molarity of 0.50 L of solution containing 40.0 g of CaCO3?
March 9, 2011 by Jen

chemistry
A solution is prepared by dissolving 23.7g of CaCl2 in 375.0g of water. The density of this solution is 1.05g/mL. determine the concentration (molarity) of Cl in solution.
March 14, 2011 by jim

chemistry
6.67 mL of 18.0 molar sulfuric acid solution was dissolved in enough water to make 500 mL of solution. The molarity of the diluted solution is
October 31, 2011 by Anonymous

chem
A solution is prepared by dissolving 75.0 grams of sucrose (C12H22O11) in enough water to produce 1.00L of solution. What is the molarity of this solution?
December 3, 2012 by antu

qualitative chemistry
calculate the percent w/v, mole fraction of components, molarity and normality of the solution containing 13 g nahso4 dissolved in water upto total volume of 250 ml
July 4, 2013 by maggie valle

Chemistry
25 mL 0.1 M acetic acid is titrated with 0.1 M NaOH. Calculate the pH after the addition of 0.0 mL, 1.0 ml, 2.5 mL, 4.0 mL, 7.0 mL, 10.5 mL, 15.0 mL, 17.0 mL, 20.0 mL, 22.0 mL, 23.0 mL, 23.5 mL, 24.0 mL, 24.25 mL, 24.5 mL, 24.75 mL, 25.0 mL, 25.25 mL, 25.5 mL, 25.75 mL, 26.0 ...
April 22, 2013 by smartkid <33

college chemistry
An aspirin tablet weighing 0.502 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of the solution was ...
January 24, 2010 by Alexander

Chemistry
A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 2. Calculate the % concentration of this solution. 3. Calculate the ...
January 31, 2011 by Paul

please help meDr.Bob
I would appreciate very much If you guys could show me how to approach this problem. A solution is prepared by dissolving 10.8g of ammonium sulfate in enough water to make 100.0mL of stock solution. A 10.00mL sample of this stock solution is added to 50.00mL of water. ...
September 23, 2007 by claudia

Chemistry
what volume of water must be added to 10ml og 6.0M NaOH to make a solution that is .30 M in NaOH How do I solve for this
October 25, 2007 by Lauren

chemistry
how much NaOH would be needed to dissolve in H2Oto prepare 2.00L of a NaOH solution in which [OH-]=0.95 M?
March 29, 2012 by lindsey

chemistry
How much NaOH (g) would you need to dissolve in water in order to prepare 2.75 L of a NaOH solution in which [OH-]= 0.50 M?
November 23, 2012 by Brunette

chemistry
A liter of 8 M NaOH solution contains how many grams of NaOH?
January 14, 2010 by a

chemistry
A liter of 2M NaOH solution contains how many grams of NaOH?
January 27, 2010 by Victoria

chemistry
How would you make a 1.0 L of 0.10M NaOH solution of 10.0M NaOH?
April 6, 2011 by Marilyn

Chem 121
How many grams of NaOH are present in 9.0 mL of a 8.0% (m/v) NaOH solution
July 26, 2011 by Barbara

chemistry
How many grams of NaOH (MW = 40.0) are there in 100.0 mL of a 0.275 M NaOH solution?
November 7, 2011 by mary

Chemistry
Describe how 500ml of 0.1M solution of NaOH can be prepared from 2.0M NaOH?
March 28, 2012 by Snagga

Chemistry
How many moles of NaOH are in 125mL of a 4.00M solution of NaOH?
November 3, 2012 by Anonymous

Chemistry
Calculate the pH at the equivalence point in titrating a 0.120 M solution of NaHCrO4 (sodium hydrogen chromate) with 7.0×10−2 NaOH. Please help!
November 20, 2010 by Josh

College Chemistry
A 30.00 mL volume of a weak acid, HA, (Ka = 3.8 x 10^-6) is titrated with 39.00 mL of 0.0958 M NaOH to the equivalence point. A.) What is the pH of the acid solution, before any base is added to it? B.) What is the pH of the acid solution after exactly 19.50 mL of NaOH is added?
April 13, 2010 by Shell

chemistry
a 150ml sample of wetlands water requires 25.00 mL of a 0.0250 MH2SO4 solution for neutralization. Calculate the molarity of CaCO3 in the sample
April 7, 2010 by tom

Chemistry
If 17.0 mL of 0.590 M CaCl2 are mixed with 46.6 mL of 0.480 M CaCl2, calculate the molarity of each ion in the final solution? Assume the volumes are additive.
April 3, 2011 by Pob

chemistry
An aqueous solution of glucose is made by disolving 8.75 g of glucose in 100 mL of water. Calculate molarity, molality and the mole fraction
October 7, 2013 by henry

Chemistry (again)
What mass of NaOH is required to precipitate all the Fe2+ ions from 52.0 mL of 0.200 M Fe(NO3)2 solution?
September 28, 2010 by Alex

ap chemistry
If 310mL of 2.2molar HCl solution is added to 135 mL of 3.6 molar Ba(OH)2 solution, what will be the molarity of BaCl2 in the resulting solution? Answer in units of M
March 6, 2013 by cheri

chemistry
what is the molarity of a sodium hydroxide solution if 26.0mL of the solution os titrated to the end point with 57.5mL of a 0.500M hydrochloric acid solution
March 8, 2013 by casey

Chemistry
Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E-4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by difference a tablet ...
November 20, 2012 by Emma

chemistry
Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E-4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by difference a tablet ...
November 20, 2012 by Emma

chemistry
Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E-4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by difference a tablet ...
November 20, 2012 by Emma

Chem
A 20.00−mL sample of an unknown HClO 4 solution requires titration with 22.92mL of 0.2200M NaOH to reach the equivalence point. What is the concentration of the unknown HClO 4 solution? The neutralization reaction is: HClO 4 (aq)+NaOH(aq)¨H 2 O(l)+NaClO 4 (aq)
August 5, 2013 by Anonymous

college Chemistry
A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initial volume of H2SO4 was 13.28 and the final volume of H2SO4 was 28.29 mL when the solution turned very slightly pink. What is the concentration of NaOH?
December 6, 2010 by Ivy

Chemistry Help Pls!!!
A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initial volume of H2SO4 was 13.28 and the final volume of H2SO4 was 28.29 mL when the solution turned very slightly pink. What is the concentration of NaOH?
December 6, 2010 by Jerome

college Chemistry
A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initial volume of H2SO4 was 13.28 and the final volume of H2SO4 was 28.29 mL when the solution turned very slightly pink. What is the concentration of NaOH?
December 7, 2010 by Ivy

Chemistry
A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 2. Calculate the % concentration of this solution. 3. Calculate the ...
January 31, 2011 by Paul

Chemistry
A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 2. Calculate the % concentration of this solution. 3. Calculate the ...
February 1, 2011 by Paul

Chemistry
A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 2. Calculate the % concentration of this solution. 3. Calculate the ...
February 1, 2011 by Paul

science
4gm NaOH are contained in 1deci litre of a solutio,calculate the mole fraction of NaOH?
May 16, 2013 by abhitya

chemistry needs another look plz
Posted by Lori on Tuesday, December 14, 2010 at 5:38pm. The mole fraction of an aqueous solution of potassium perchlorate is 0.125. Assuming that the density of this solution is 1.20g mL-1, calculate the following: (A) the mass percent of potassium perchlorate in the solution...
December 14, 2010 by Lori

chemistry help
A solution of AgNO3 contains 29.66 g of solute in 100.0 mL of solution. What is the molarity of the solution?
May 9, 2009 by chris

chemistry
Describe how you would make 500.0mL of a 0.200M NaOH solution from a 15.0 stock NaOH conentration
November 6, 2011 by Monique

chemistry
A 20.0 mL sample of 0.687 M HBr is titrated with a 0.216 M NaOH solution. The pH after the addition of 10.0 mL of NaOH is __________.
July 24, 2012 by katie

Chemistry
a 0.451 L solution of 1.71 ascorbic acid (ka1=7.9E-5, ka2=1.6E-12) is titrated with 1.35 M NaOH. What is pH when 0.9540 L of NaOH is added?
December 11, 2012 by Chris

chemistry
what is a titration of 25 ml of 0.15 M HCLO2 is performed with 0.15 M NaOH. What is the pH of the solution after 25 ml of naOH have been titrated? Ka = 0.011
August 12, 2013 by auriane

chemistry
Calculate the molarity and molality of 37.0%(w/w) HCI with a density of 1.19 g mL-1.The molecular mass of HCI is 36.46 g mol-1.
January 21, 2013 by rohaya

chemistry
how do you find the moles of solute and the molarity if the molar mas is 98.07, mass of solute is 62.0, and the volume of solution is 1.00?
June 13, 2010 by denise

chemistry
What is the molarity of a solution that contains 31.0 HCl in 5.00kg water? (molar mass of HCl=36.46 g/mol)
January 22, 2012 by jim

Chemistry
Calculate the amount of water (in grams) that must be added to (a)5.00 g of urea (NH2)2CO in the preparation of a 16.2 percent by mass solution, and (b)26.2g of MgCl2 in the preparation of a 1.5 percent by mass solution.
September 19, 2010 by Diana

Chemistry
You have a .200M solution of NaCl. if you pipette 2.00 mL of the solution into a 25mL volumetric flask and dilute it to the mark, then what is the molarity of the new solution
October 24, 2010 by mikey

chemistry
If you calculated a salt-tainted solution to be 3.5%, what is the molarity of this solution? assume the density of this solution is 1.03g/cc. BTW, this is the salinity of sea-water. pls do help thanks.
November 2, 2012 by Erin 12

chemistry
A. What is the mass of Solution 3? in g B. What is the density of Solution 2? g/ml solution 1: Mass Empty Flask (g):42.252 Mass NaCl (g):0.911 Volume Water (mL):100 Mass of Flask + Solution (g):43.107 solution 2: MEF: 45.778 mass nacl:0.897 volume water: 100 mass of Flask+sol:...
January 8, 2010 by eng

chemistry
Calculate the change in pH when 6.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Calculate the change in pH when 6.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution.
February 4, 2012 by Katie

chemistry
Calculate the change in pH when 6.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Calculate the change in pH when 6.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution.
February 5, 2012 by Katie

CHEMISTRY
a) Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). b) Calculate the change in pH when 4.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution.
March 27, 2012 by Jematormal91

chemistry
Suppose that 0.483 g of an unknown monoprotic weak acid, HA, is dissolved in water. Titration of the solution with 0.250 M NaOH(aq) required 42.0 mL to reach the stoichiometric point. After the addition of 21.0 mL, the pH of the solution was found to be 3.75. (a) What is the ...
June 14, 2013 by Sara

DrBobb222 : Chemistry HElp...Please Check
Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately “weighing by difference” about 0.1 g of KIO3 and placing it in your 100 mL volumetric flask. Fill the flask to mark with distilled water. Potassium iodate reacts ...
October 21, 2008 by Sara

chemistry
a solid sample of impure Ba(OH)2 is added to 400.0 mL of 0.5000 M of aqueous HBr, a strong acid. the remaining solution was acidic. it was then titrated to equivalence point with 120.0 mL of 0.5000 M of NaOH solution. what mass of pure Ba(OH)2 was present in the sample?
February 26, 2011 by mel <3

Chemistry Solubility help!!!!!!!!!
INFORMATION: [HCl] = 0.1388 M We placed 0.5 g Ca(OH)2 in 100 mL of the following solutions: Flask A: Distilled Water (7.4 mL of HCl needed to titrate) Flask B: 0.05 NaOH (12.1 mL of HCl needed to titrate) Flask C: 0.025 NaOH (10.8 mL of HCl needed to titrate) Flask D: 0.0125 ...
March 26, 2013 by Sally

Chemistry Acid/bases
The concentration of H2SO4 in a solution is 3.20 10-6 M. Assume the acid dissociates completely in solution. What is the [H3O+] in the solution? What is the [OH-] in the solution? What is the pH of the solution? What is the pOH of the solution? OK SO I KNOW HOW TO DO THESE ...
February 10, 2009 by Spencer

chemistry
A beaker contains 199 mL of NaOH with a concentration of .100 mol/L. Calculate the number of moles of NaOH
June 27, 2011 by Anonymous

Introductory Chemistry
In a titration 25.1ml of a monoprotic weak acid is neutralized with 25.1 ml of .502M NaOH(aq). Calculate the Ratio of [A-] to [HA] after 12.55 of the .502 M NaOH has been added to the initial amount of HA. Anyone have any idea what's going on. I got as far as to find the mol's...
February 4, 2009 by Nina

chemistry
If I have 10 grams of NaOH in 4 Liters of water, what is the molarity
July 14, 2011 by ana

Chemistry
The standardized NaOH solution was determined to be 120M whereas the mass of the sample of impure tartaric acid was 1.35g. If the initial reading of the buret volume changed from 48 ml to a final reading of 17 ml at the endpoint of the titration of the impure sample calculate ...
February 28, 2013 by Jonah

chem
quantitative determination of acetylsalicylic acid in aspirin tablets by back titration 1)why do we use a more dilute NaOH solution for the standardization of NaOH? 2)what is the rationale behind the dilution and aliquoting of the aspirin sample? 3)what are the principles ...
January 20, 2009 by krissy

Chemistry
A sample of solid Ca(OH)2 is stirred in water at 30°C until the solution contains as much dissolved Ca(OH)2 as it can hold. A 100.-mL sample of this solution is withdrawn and titrated with 5.00 X 10^-2 M HBr. It requires 48.8 mL of the acid solution for neutralization. What is...
February 17, 2010 by Candice

chemistry
how much NaOH (in grams)do you need to weigh ouMt to make 250ml of a 0.5M naoh solution.... i got 5.0g is this right?
February 5, 2012 by aaa

Chemistry
If a chemist titrates 120.0 mL of NaOH with a 5.0 M solution of HCl and requires 56.0 mL of the acid to reach the endpoint, what is the concentration of the NaOH?
February 17, 2012 by Anonymous

Chemistry
If a chemist titrates 120.0 mL of NaOH with a 5.0 M solution of HCl and requires 56.0 mL of the acid to reach the endpoint, what is the concentration of the NaOH?
February 17, 2012 by Spacy1996

Chemistry
A 100.0 ml sample of .50 M HCl (aq) is titrated with a .10 M NaOH. What volume of the NaOH solution is required to reach the endpoint of the titration?
March 13, 2012 by Arianna

more chemistry
What volume of 0.115 M M HClO 4 \rm HClO_4 solution is needed to neutralize 58.00mL mL of 8.75×10−2 M M NaOH \rm NaOH
September 29, 2013 by Anonymous

chemistry
How many grams of NaOH are present in 5.0 mL of a 1.0% (m/v) NaOH solution?
April 25, 2008 by Rob

Chemistry
NaOH+HNO3---> NaNO3+H2O calculate the number of moles of every ion present in solution after the reaction has occurred.
September 14, 2010 by Hiba

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