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May 4, 2016

Search: Calculate the solubility (in grams per 100 mL of solution) of magnesium hydroxide in a solution buffered at pH = 12.

Number of results: 72,126

thermodynamics?
calculate the number of grams of glycerol, C3H5(OH)3 (MW=92.1 g/mol), that must be dissolved in 520 grams of water to raise the boiling point to 102.00 degrees Celsius. this whole chapter really lost me. delta T = Kb*molality delta T = 2 degrees. Kb = boiling point elevation ...
April 21, 2007 by chris

chemistry
A solution was made by dissolving 5.15 mg of hemoglobin in water to give final volume of 1.00 mL. The osmotic pressure of this solution was 1.97 x 10^-3 atm at 25C. Calculate the molar mass of hemoglobin. pi = iMRT i = 1 since hemoglobin is nonelectrolyte and doesn't ...
September 14, 2012 by Wiped Out

Chemistry
Are propane, methoxymethane, and ethanol soluble in water? yes http://www.chem.lsu.edu/lucid/tutorials/solubility/Solubility.html Henry is wrong.
June 11, 2007 by Raj

Chemistry
Assuming an efficiency of 38.60%, calculate the actual yield of magnesium nitrate formed from 145.9 g of magnesium and excess copper(II) nitrate. I got 230.5g but it isn't right.. I got 6 mols of Mg then calculated molar mass of Mg(NO3)2 and got 148.31 and then multiplied the ...
April 22, 2014 by Clare

chemistry
We did a LAB where we used a spectrophotometer to measure the absornency of a solution. It was a bluish color, so the question is.... What could be done to modify this experiment if the original solution was colorless? HINT: you can NOT add a coloring agent such as food ...
March 11, 2009 by jaseline

calculus maths
Hi can some one help, explain the following please. I seem to have issues with this: 1- Find the corresponding particular solution (in implicit form) that satisfies the initial; condition y = when x = 0. 2- Find the explicit form of this particular solution. 3- What is the ...
February 15, 2011 by Claire

Chemistry
A dilute aqueous solution of an organic compound soluble in water is formed by dissolving 2.35 g of the compound in water to form 0.250 L solution. The resulting solution has an osmotic pressure of 0.605 atm at 25 Celsius. Assuming that the organic compound is a nonelectrolyte...
February 6, 2012 by Jeremy

Biology
A student wishes to prepare 300 mL of 0.25 M sucrose. He puts 25.7 g of sucrose in a beaker and then adds 300 mL of dH2O. The total volume of the solution after the sucrose has been dissolved is 330 mL. a) What did he do wrong when preparing his solution? b) What is the actual...
September 14, 2014 by Ki

chemistry
2.) If you pass 10.0mL of a 50.0mL solution of [Co(en)2Cl2]Cl that has been reduced with Zn through a cation exchange column, you will obtain a solution that has three H+ ions for every Co3+ ion that was originally present in the sample. These H+ ions are titrated with 0.10-M ...
October 26, 2014 by Anonymous

chemistry
2.) If you pass 10.0mL of a 50.0mL solution of [Co(en)2Cl2]Cl that has been reduced with Zn through a cation exchange column, you will obtain a solution that has three H+ ions for every Co3+ ion that was originally present in the sample. These H+ ions are titrated with 0.10-M ...
October 26, 2014 by xx

chemistry
Use a balanced redox equation to answer the following question. 71.7 mL of 1.13 x 10-4 mol L-1 potassium ferricyanide solution is required to react completely with 43.9 mL of ascorbic acid solution (under acidic conditions). What is the concentration of the ascorbic acid ...
October 17, 2015 by hm

Algebra
Solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the original logarithmic expression. ln (x+4)=1 What is the exact solution? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The...
February 3, 2016 by edward

Chemistry
How many grams of CH3OH must be added to water to prepare 420.0 mL of a solution that is 5.0 M CH3OH?
March 10, 2010 by Camarra

chemistry
How many grams of cadmium must react to displace 13.0 g of copper from a solution of copper nitrate?
October 12, 2010 by tata

chemistry
How many grams of cadmium must react to displace 13.0 g of copper from a solution of copper nitrate?
October 12, 2010 by tata

chemistry
what is the number of grams needed to prepare a 1.23 M solution of nitric acid if 250.0 mL are needed?
May 19, 2011 by Anonymous

chemistry
What mass of KNO3 in grams would be required to prepare 0.6 liters of a 1.8 M KNO3 solution?
November 29, 2011 by Megan

Ochem
how many grams of NaOCl are in 12.14 mL of a 6.65% (wt./vol.) NaOCl solution? Please help me set this up... I have no idea what to do.
February 1, 2012 by Seerat

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

Science
How many grams of CH3SH must be added to water to prepare 410mL of a solution that is 2.5 M CH3SH?
November 4, 2014 by Eli

Chemistry
How many grams of chlorine gas are needed to make 5.40 x 10 6 g or a solution that is 1.40 ppm chlorine by mass?
November 5, 2014 by Dustin

Chemistry
How many grams of Fe(NO3)2 are present in 555mL of a 0.650 M solution of Fe(NO3)2?? I have no clue what to do??
June 21, 2015 by Ocean

Chemistry
How many grams of Fe(NO3)2 are present in 555mL of a 0.650 M solution of Fe(NO3)2?? I have no clue what to do??
June 21, 2015 by Ocean

Chemistry
How many grams of carbon dioxide will be made when 100 grams of methane burn in an excess of oxygen
June 5, 2011 by Mary

Chemistry
If 175 grams of CsCl in 100 grams of water at a temperature of 100C will it be saturated or unsaturated?
August 24, 2014 by Anna

chem
the max # of grams of K that can be obtained from 100.grams of KHCO3?
November 24, 2012 by mary

science
what amount of ammonium chloride do I need to make a 100 micromolar solution?
March 29, 2010 by Michael

chemistry
0.100 M of NaNO2 and 0.050 HNO2. what is the H3O of this solution? set up please.
April 26, 2010 by david.

chemistry
How much concentrated 12 M hydrochloric acid is needed to prepare 100.0 mL of a 2.0 M solution?
May 11, 2010 by {RayRay} NEED HELP PLZ

College Chemistry
Molarity of .100 mole of urea (CH4N2O) in 250.0 mL of solution
February 8, 2011 by Audrey

chem
what is the molarity of iodine ions in a 100 mL solution containing 2.50g of MgI2?
April 24, 2011 by tracy

chemistry
how much concentrated 12 M hydrochloric acid is needed to prepare 100 mL of a 2.0 M solution?
March 28, 2012 by dellanie

Algebra
Y^2 - 20y + 100 = 64 Looking for exact solutions. I know they are integers, but...is there a decimal solution? Thanks
April 28, 2012 by ShelbyA

chemistry
What is the molarity of a solution prepared by dissolving 2.41 g of potassium iodide, KI in 100 mL of water?
May 6, 2012 by Ambra

Chem
what is the pH of solution made by mixing 100 mL of 0.030M HCL with 200 mL water?
September 16, 2012 by John

chemistry
How many moles of sulfate ions are in 100 ml of a solution of .002 M Fe2(SO4)3?
March 19, 2013 by Moyer

chemistry
If 75 g of NaNO3 is dissolved in 100 g of H2O at 10C, is the solution saturated, unsaturated or supersaturated?
May 22, 2014 by Hayden

College Chemistry
If 69.3g of magnesium chloride were produced from a process with a known yield of 78.3%, find the mass of carbon tetrachloride in grams that was used. Equation: 2CCl4 + MgCrO4 -> 2COCl2 + CrO2Cl2 + MgCl2 I was able to solve it but I just don't understand why it's wrong. ...
March 31, 2010 by Bach

Math
Two acid solutions are to be mixed together.  Solution A is 30% acid by volume.  Solution B is 70% acid by volume. The 800 mL mixture is 54% acid by volume. The amount of Solution A, rounded to the nearest milliliter, is ____________mL.
July 27, 2015 by Amy

chemistry
A solution is made by dilution 400.mL of 2.0 M HCL to a final volume of 1000. mL. what is the pH of this solution? i'm stuck on this question i have no idea what to do, can anyone help? thanks:)
May 15, 2008 by Miley

alegbra
I need help with these problem someone told me that you was not helping them. Please help me!! 5/4x +1/8x=11/8 +x The solution is x= Solve by the elimination method. 4x +5y=5 8x +10y=10 What is the solution of the system.
April 7, 2009 by Elaine

Chemistry
If 535 Ml of gaseous HCL, at 26.5 degrees Celsius and 747mm Hg, is dissolved in enough water to prepare 625 ml of solution, what is the PH of the solution?
August 5, 2009 by ChemHurts

Chemistry-Please help
Find the percent by mass of sodium chloride in a 1.45M NaCl solution. The density of the solution is 1.05g/mol .
October 5, 2009 by Rose

chemistry.
2.02g of KNO3 ( Mz=101) is dissolved in sufficient water to prepare 0,500 dm3 of solution. What is the concentration of this solution in mol dm?
November 5, 2009 by Mark

9th grade
10 gm of silver nitrate solution is added to 10 gm of sodium chloride solution what change in mass do you expect after the reaction and why?
November 12, 2009 by Gazal

9th grade
10 gm of silver nitrate solution is added to 10 gm of sodium chloride solution what change in mass do you expect after the reaction and why?
November 12, 2009 by Princess

Chemistry
when dissolved in an aqeous solution, which of the following salts will yield an acidic solution? NH4Cl, NaClO4, Na2S, MgBr2, Ba(CH3CO2)2
March 22, 2010 by james

Chemistry
Does the solid Zn(OH)2 dissolve when concentrated lye, NaOH solution, is added to a beaker containing a saturated solution of Zn (OH)2 and a small amount of Zn(OH)2?
May 5, 2010 by Ron

Chemistry
what is the molarity of a solution prepared by dissolving 222 g of sodium carbonate in enough water to make a solution volume of 3250 mL's?
July 9, 2010 by Heather

Chem
To obtain 12 g of sucrose (MM=342) from a solution labeled 8.0% C12H22O11 by mass, we would need to weigh out ______ of solution?
September 25, 2010 by Amanda

College Chemistry
How many milliliters of a 0.200M AgNO3 solution are required to preccipitate most of the Cl^- ions from a solution containing 0.855 g of NaCl?
September 27, 2010 by KELLY

Chemistry 1200
For each of these solutions, determine the boiling point of the solution 0.238 M glucose (C6H12O6) in water (Assume the density of the solution is 1.00 g/mL.)
January 25, 2011 by Rukky

chemistry
What volume of 0.200 M silver nitrate solution (AgNO3) would have to be diluted to form 500mL of 0.050 M solution?
February 25, 2011 by georgia

CHEM
HOW MCH VOLUME OF DECA MOLAR SOLUTION IS REQD 2 PEPARE 500ML OF SOLUTION WITH DENSITY 1.03G/ML & HAVING MASS% =40%.
July 11, 2011 by AMIT

maths
find the general solution of the following first order differential equation. t*(dy/dt) = (-y/t) + ((exp(1/t)/t^3) could you show steps in working to solution.
October 26, 2011 by ricky

AP CHEMISTRY
Sufficient strong acid is added to a solution containing Na2HPO4 to neutralize one-half of it. what will be the pH of this solution? Explain please
February 15, 2012 by ERAGON

AP CHEMISTRY
Sufficient strong acid is added to a solution containing Na2HPO4 to neutralize one-half of it. what will be the pH of this solution? Explain please
February 15, 2012 by ERAGON

ChemB
A forming acid solution has a pH of 3.25. Which of these substances will raise the pH of the solution upon addition? Explain. A) HCl B) NaBr C) NaCHO2 D) KCl
March 12, 2012 by ALISON

Chemistry
we used the solution NiSO4 6H20 - i have to find the mass of solute dissolved in a 25ml solution. - and the molar concentration.
April 12, 2012 by Chandra

chemistry
When you add 100ml of a 0.1M HCl solution to 200 ml of 0.4M NaOH solution what is the pH? can you please show detailed work. o dont understand this
June 8, 2012 by jen

Chem 2
What is the molarity of a solution composed of 8.210g of Potassium Chromate (K2CrO4),dissolved in enough water to make .500 L of solution
December 17, 2012 by Cassidy

Chemistry
KClO3 dissociated in H20 should form a neutral solution. The results proved to be a slightly acidic solution with a pH of 6. What happened?
March 2, 2013 by Misha

Chemistry
If you add enough water to 175.0 mL of a .15 M NaCl solution until the final volume is 350.0 mL, what will the molarity of the diluted solution be?
March 12, 2013 by Tim

chemistry
What is the osmotic pressure in torr of a 0.0155 M glucose solution at body temperature ( 35.7 C)? What are the boiling and freezing points for the same solution?
April 22, 2013 by Ali

Chemistry
To what volume must 1580mL of 0.2005 N solution be diluted so that the resulting solution will be 0.1899 M? How much water will be needed in the dilution?
January 20, 2014 by Summer

Chemistry- acids/bases
Find the concentration of OH- of a solution of 45.0mL of 0.0921 M Ba(OH)2 diluted with enough water to make 350.0 mL of solution.
February 12, 2014 by Jessica

Chemistry- acids/bases
Find the concentration of OH- of a solution of 45.0mL of 0.0921 M Ba(OH)2 diluted with enough water to make 350.0 mL of solution.
February 12, 2014 by Jessica

Chemistry
If I leve 750 mL of 3.6 sodium chloride solution uncoverd and 150 mL of the solvent evaporates overnight, what is the new solution concentration?
February 20, 2014 by Emma

chemistry
What is the molarity of a solution composed of 2.23 g of potassium iodide (KI) dissolved in enough water to make 0.181 L of solution? Answer in units of M
February 25, 2014 by Roberta

Chemistry
A 4.379 g sample of MgCl2 is dissolved in enough water to give 750.0 mL of solution. What is the chloride ion concentration in this solution?
April 14, 2014 by Chris

Chemistry
A student mixed 40ml of 0.2m Na2co3 solution with 50 ml f 0.25M cacl2 solution , what is the except number of moles of naclkkw that I will be formed ?
April 20, 2014 by Mariam

science
When 4.56 g of a nonelectrolyte solute is dissolved in water to make 275 mL of solution at 22 C, the solution exerts an osmotic pressure of 873 torr.
April 25, 2014 by eva

Chemistry
If 87.3 mL of 0.225M KOH solution is mixed with 44.4 mL of 0.313M H2SO4 solution, would the resulting mixture be acidic, basic or neutral?
June 3, 2014 by Mary

chemistry
You have a protein solution of 3.7mgs/ml You need to load 20ug onto a gel. How much of this solution would you use ?
August 27, 2014 by frank

chemistry
a solution is made by mixing 38.0 ml of ethanol C2H6O, 62.0mL of water. assuming ideal behavior, what is the vapor pressure of the solution at 20 C
October 10, 2014 by cindy

Chemistry
Explain what would happen to the color of a dilute solution containing FeCl4- if you added a solution of sodium chloride, NaCl.
October 29, 2014 by Anonymous

Please Help Me With This Chemistry HW Question!
Should 25 ml of 0.15 M HCL solution be added to 250 mL of buffer solution containing 0.25M HF Ka-7.1 x 10, and 0.40 M NaF at a pH of 3.15 what is the new pH?
November 25, 2014 by Always

Chemistry
a solution made by dissolving 2.733g KH2PO4 and 4.508g K2HPO4 in water to give 250 ml of solution. is the answer... 7.432= ph
February 7, 2015 by yes

chemistry
how many ml of 0.655 M phosphoric acid solution is required to neutralize 15 ml of 1.284 M NaOH solution, write a balanced chemical equation
March 12, 2015 by Anonymous

Chemistry
A solution contains 0.50M Nh3 and 1.50 M Nh4cl. What is the maximum concentration of mg2+ that can be present in such a solution without precipitating Mg(oh)2?
November 17, 2015 by Angel

math
Solve the following system by matrix reduction. Write your answer using parameter(s) if necessary. If there is no solution, state "no solution". x-2y-3z=-2 4x-3y+3z=-8
November 30, 2015 by James

math
Solve the following system by matrix reduction. Write your answer using parameter(s) if necessary. If there is no solution, state "no solution". x-2y-3z=-2 4x-3y+3z=-8
November 30, 2015 by James

science
solution contains 0.50M Nh3 and 1.50 M Nh4cl. What is the maximum concentration of mg2+ that can be present in such a solution without precipitating Mg(oh)2?
February 15, 2016 by dffddx

Chemistry
If you make a solution in the laboratory that contains 0.1 M acetic acid (CH3COOH), what concentration of hydronium will you have once the solution equilibrates?
February 29, 2016 by Rose

Chemistry
1.0L of aqueous solution in which [H2CO3]=[HCO3^-]=0.10M and has [H^+]=4.2E-7. What is the concentration of [H^+] ofter 0.005 mole of NaOH has been added? H2CO3 ==> H^+ + HCO3^- k1 = (H^+)(HCO3^-)/(H2CO3) I don't know if you are supposed to calculate or to look up k1. ...
August 7, 2007 by Vic

chem
an (aq) ammonium chloride solution, rather than H2SO4, is used in the hydrolsis of the magnesium complex of 1,1-diphenylethanol to ensure that no acid catalyed dehydration occurs. write the chemical structure of the dehydration product from 1,1-diphenylethanol? -so isnt the ...
March 7, 2009 by yen

college chem
. Jack Daniels Tennessee whiskey is 40.00% ethanol by volume. However, % alcohol by mass is quite different from % by volume. The molality of ethanol in an aqueous solution that is 40.00 % ethanol by volume is 10.88 molal. A) Find the % ethanol by MASS, based on the molality. ...
March 9, 2010 by josh

chemistry
What will be the molarity of 335 ml of solutions containing 1.02 g of magnesium perchlorate. Here what i think divide 335/1.02 to get answer but i am not sure. Question 2:) how many ml of solute will be dissolved in a 435ml of 5.4%v/v of hci solution. I am thinking divide ...
July 18, 2014 by kody

Chemistry 12
4. a. Using Le Chatelier's principle, what effect will an increase of temperature have on the following system? H2O(l) + 57 kJ ↔ H+(aq) + OH-(aq) b. What is the expression for the constant for this reaction? c. What effect will an increase in temperature have on the ...
May 22, 2011 by Sareena

science
I am doing a titration lab and need help with a problem. (i used .100M H2SO4)(I used 10.0 ml of Ba(OH)2 solution and added 50.0 ml of distilled water making 60.0 ml total.) 1. Use the titration results to calculate the moles of H2SO4 that were used to reach the equivalence ...
October 12, 2013 by Charles

chem
Describe in detail by words how to prepare 200ml of .150M HCl from a 1.00 M HCl stock solution? Need help with this please? i used C1V1=C2V2 and got volume 2 = 33L or 0.33mL. to prepare the solution i need to weigh 1 gram of HCL (from 1.00M HCl stock solution)lets say i put it...
November 27, 2012 by vince11

Chemistry
In photography, unexposed silver bromide is removed from film by soaking the film in a solution of sodium thiosulfate, Na2S2O3. Silver ion forms a soluble complex with thiosulfate ion, S2O32-, that has the formula Ag(S2O3)23-, and formation of the complex causes the AgBr in ...
March 9, 2015 by Anonymous

Chem
Potassium permanganate (KMnO4) solutions are used for the determination of iron in samples of unknown concentration. As a laboratory assistant, you are supposed to prepare 200. mL of a 0.300 M KMnO4 solution. What mass of KMnO4, in grams, do you need? I got 60, but that's ...
October 5, 2012 by Anonymous

Chemistry
Equal volumes of 1 M BaCl2 and 1 M NaSO4 are mixed. What effect will the addition of more Na2SO4 solution have on the concentration of Ba^2+ remaining in solution? *No effect *increase the concentration of Ba^2+ ions *Decreases the concentration of Ba^2+ *Ba^2+ will remain the...
April 14, 2008 by LT

chemistry
What is the molar concentration of sodium in a 200mL solution prepared from 1.359 grams of sodium phosphate?
October 6, 2009 by Anonymous

chemistry
A chemist wants to make 3.1L of a 0.104M solution. How much KCl in grams should the chemist use?
October 26, 2010 by rachel

Chemistry
How many grams of NaCl would be required to make a 24% NaCl solution if 250 ml of water were used
May 1, 2011 by Michelle

chemistry
If Na has a mass of 23, and Cl a mass of 35, how many grams of NaCl are added to water to make one liter of a 3M solution?
May 4, 2011 by Anonymous

Chemistry
How many grams of a 12.5% (w/w) aqueous solution of HCl do you have to measure out if yo need 32g Of HCl?
August 9, 2012 by Jim

Chemistry 3A
How many grams of KCl would you need to weigh out to prepare 0.25L of a 2.00 M KCl solution?
December 10, 2012 by Gurjot

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