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October 22, 2014

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

Number of results: 51,971

chemistry/help
65.933grams of barium fluoride are placed into a volumetric flask,and enough water is added to make 1.500 liters of solution. calculate the molarity.
April 28, 2012 by JOSEPH

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 ...
January 8, 2013 by Anonymous

chem
A solution is prepared by dissolving 25 grams of sodium sulfate in enough water to give a total volume of 500. mL. The molar mass of sodium sulfate is 142 grams per mole. What is the molarity of the solution?
November 14, 2012 by jennifer

Chemistry
3. 25.0 mL of a 0.50 M solution of acid HA was combined with 25.0 mL of a 0.50 solution of base MOH in a calorimeter with a calorimeter constant of 13.5 J/ C. The initial temperature of the solution was 23.3 C and the maximum temperature was 34.7 C. The resulting solution had ...
April 16, 2013 by Kim

chemisrty
A solid acid is dissolved in enough water to make 200 ml of a solution. 40.0ml of the solution is titrated to a phenolphthalein en point with an NaOH solution. The neutralized solution and the remainder of the acid solution are then mixed and the PH of the resulting solution ...
April 16, 2014 by Aria

Chemistry
Consider the HF solution with the concentration 5%(w/v). Calculate its concentration in the molarity. Use four significant figures in the answer.
March 25, 2012 by Lisa

chemistry
Consider the HF solution with the concentration of 5% (w/v). Calculate its concentration in the molarity. Use four significant figures in your answer
October 25, 2013 by Anonymous

Chemistry
A solution is prepared by dissolving 15.6 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00 mL sample of this stock is added to 52.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution. I know ...
May 4, 2010 by Anonymous

Chemistry
What is the molar concentration of 4% (w/v) CH3COOH? Hence calculate the expected titre of 0.1M NaOH solution when reacting with 5.00mL if vinegar.
April 18, 2010 by Stae

Chemistry
Calculate the pH at the equivalence point in titrating a 0.120 M solution of NaHCrO4 (sodium hydrogen chromate) with 7.010−2 NaOH.
November 20, 2010 by Josh

Chemistry
How do you calculate the number of moles of NaOH to add to a liter of 1M NH4CL (pka of NH4+ = 9.25 ) to produce a solution buffering the pH at 8.75 ? thanks
June 29, 2011 by Lauren

Chemistry
Calculate the pH at the equivalence point in titrating 0.110 M solution of sodium hydrogen chromate (NaHCrO4) with 8.010−2 M NaOH.
April 22, 2012 by Kaitlyn Smith

chemistry
What mass of NaOH is required to precipitate all the Fe2+ ions from 50.0 mL of 0.200 M Fe(NO3)2 solution?
January 11, 2010 by jennifer

Chemistry
Express the concentration of a 2.0 M NaOH solution as a mass/volume percent. Can you please explain how to get the answer?
May 29, 2012 by Ashleigh

Chem 2
What mass of water must be used to make a 1.35m solution that contains 8.20 moles NaOH?
December 17, 2012 by Cassidy

biology
suppose 23mL of NaOH was required. How much Carbonic Acid was neutralized? 1L of .01 NaOH contains ____ mol NaOH? lmL of .01 NaOH contains _____mol NaOH? 23mL of .01 NaOH contains _____ mol NaOH? 2 mol of NaOH react with 1 mol H2CO3 2.3 x 10^-4 mol of NaOH react with ____mol CO2
October 5, 2010 by Anonymous

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 ...
September 27, 2009 by Mandy

Chemistry
If 33.6 grams of KCl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass? AND if 2.1 moles of CaCl2 are dissolved in enough water to make a .92 liter solution what is the resulting molarity? Please help and explain or anything?!
March 27, 2012 by Dr. David

AP Chem
An aqueous solution contains 4.50 g of calcium chloride, CaCl2, per liter. What is the molarity of CaCl2? When calcium chloride dissolves in water, the calcium ions, Ca^+2, and chloride ions, Cl^-, in the crystal go into the solution. What is the molar concentration of each ...
November 3, 2008 by Anna

Chemistry
Could someone help me with these problems; A)If 5.97mL of a solution of NaCl contains 2.54g of sodium ion, what is the molarity of the sodium chloride solution? -I know M=#moles solute/L but when I do this I get 7.28*10^-3 which is wrong, the answer should be 1.85*10^-2 B) ...
January 28, 2011 by Adam

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
Find the Molecular weight of unknown acid #5... Mass of acid #5 = 1.200g Volume (acid was mixed in) = 100ml (distilled water) Conectration of NaOH = 0.989 M Aliquot of acid titrated with NaOH = 25ml = 0.025 L Average volume of NaOH from titration = 9.3ml = 0.0093L Molar ratio ...
October 10, 2010 by AishaKay

CHEMISTRY PLEASE HELP
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
NaOH + CH3COOH = CH3COONa + H2O calculate the mass concentration in gdm-3 of the orinigal viniger
October 27, 2011 by martin

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

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
A solution is prepared by dissolving 0.2222 (0.0002) g of KIO3 in 50.00 (0.05) mL. (i) Calculate the molar mass of KIO3 with its associated uncertainty to the correct number of significant figures. (ii) Find the molarity and its uncertainty with an appropriate number of ...
March 28, 2010 by Hobson

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 27, 2008 by John

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 28, 2008 by Anonymous

chem
An aspirin tablet weighing 0.650 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, 2008 by Un

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 26, 2009 by leah

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 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
If 70.0 mL of water is added to 30.0 mL of 0.400 M solution of NaOH, what is the new concentration of NaOH?
September 27, 2014 by h

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
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

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

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

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
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
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 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

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
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

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

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

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
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
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

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

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
Calculate the pH at the equivalence point in titrating a 0.120 M solution of NaHCrO4 (sodium hydrogen chromate) with 7.010−2 NaOH. Please help!
November 20, 2010 by Josh

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

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

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
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

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 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

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