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September 28, 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: 74,368

Chemistry
How many grams of carbon tetrachloride CCL4 must be mixed with 35.96g of ethyl acetate CH3COOCH2CH3 at 50? celsius to produce a solution with a vapor pressure above the solution of 291.8 torr. The vapor pressure of pure carbon tetrachloride and ethyl acetate at 50 celsius are ...
February 20, 2011 by Jude

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 (moles)
A 1.00L sample of seawater contains 19.4g of chloride ions, 10.8 g of sodium ions, and 1.29 g of magnesium ions. How many more moles of chloride ions would be needed to make neutral salts of all the cations in solution?
February 28, 2011 by Toni Jones

Chemisty
Ok this is what i got for the grams part now.... Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 = 20.51% %C2O4 = (51.64/98.18)*100 = 52.60% % Fe 3+ = (11.34/98.15) * 100= 11.55% % K + = (15.06/98.15) * 100 = 15.43 % 20.51 g H2O, 52.60 g C2O4 11.55...
May 4, 2008 by LT

chemistry
Consider an acid, HA, with pKa =3.33 0.025 moles of hydroxide ion are added to 17.4mL of a 0.519 M solution of the acid. What is the resulting pH? I know pKa=-log([Ka]) pH=-log([H+]) I don't know how to link this information. Thanks
February 28, 2008 by Sarah

Chem
Some ethylene glycol, HOCH2CH2OH, is added to your car's cooling system along with 4.4 kg of water. If the freezing point of the water-glycol solution is -15.0°C, how many grams of HOCH2CH2OH must have been added? I used the equation: 15 celcius = 1 x 1.86 celcius/moles per kg...
March 23, 2011 by Mark

Chem help!!
A rock salt (NaCl), ice, and water mixutre is used to make homemade ice cream. How many grams of rock salt must be added to lower the freezing point 10.0 degrees C? I have no idea what to do, please help! delta T = Kf*i*m delta T = 10. Kf is the molal freezing point constant, ...
May 3, 2007 by Lindsay

chemistry
A 1.0 x 10-2 M solution of a weak acid is found to be 3.7% dissociated. Calculate Ka of this acid. I found the amount dissociated by (amount dissociated/initial conc)*100=3.7 Where do I go from here?
April 1, 2015 by Mahnoor

Math
a pharmacist has a 40% acid solution and has a 25% acid solution. How many liters must be mixed to form 54 liters of a 27 % acid solution?
August 31, 2012 by Karen

principals of microeconomics
it says that at an output of 100, the firm uses three units of capital (K) and 7 units of labor (L). In 1 capital is $100 per unit per day and labor is $80 per worker per day. So you have 100x 3= $300 and then you have 7x$80=$560. Add those together and at a daily output of ...
January 4, 2011 by mary

AP Chem
2) For a theoretical yield of 19 g and actual yield of 11 g, calculate the percent yield for a chemical reaction. Answer in units of %. 11 g / 19 g times 100 = 57.89% in your 2 sigfig problem, you might be expected to round off to 58% ======================================... ...
October 28, 2013 by Anonymous

Chemistry/maths
Using the following stock solutions: NaCl, 100mmol KCl, 200mmol CaCl2, 160mmol Glucose, 5mmol Calculate the volumes of each stock solution and the volume of water needed to prepare 100ml of a single solution containing NaCl at 5.0mmol KCl at 2.5mmol CaCl2 at 40mmol Glucose at ...
October 22, 2009 by jess

Chemistry
Assume the solubility of benzoic acid in ice-cold water is 1.70 g/L and the solubility of benzoic acid in hot water is 68.0 g/L. Calculate the minimum volume of water (in mL) needed to recrystallize 0.950 g of benzoic acid.
August 12, 2012 by Jen

Chemistry
Assume the solubility of benzoic acid in ice-cold water is 1.70 g/L and the solubility of benzoic acid in hot water is 68.0 g/L. Calculate the minimum volume of water (in mL) needed to recrystallize 0.350 g of benzoic acid.
January 30, 2013 by Anonymous

chemistry
if 125g of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous salt will remain? i would really appreciate anyone's help
February 21, 2013 by rose

chemistry
When magnesium burns in air, it reacts with oxygen and nitrogen, forming magnesium oxide and magnesium nitride. If 20.0L of air is available for this reaction, what mass of each compound can be formed? (Remember air is about 80% Nitrogen and 20% Oxygen)
March 7, 2013 by Chase

chemistry
What would be the pH of 0.568 g of HClO4 per 250 mL of solution?
February 26, 2011 by Vaneza ASAP

Algebra 1
Marks pet needs to eat at least 18 grams of fiber but less than 25 grams of protein each day. Mark gives his dog Food A and Food B throughout the day. Food A has 2 grams of fiber and 3 grams of protein in each serving. Food B has 4 grams of fiber and 1 gram of protein for each...
January 13, 2012 by D.D

Algebra 1
Marks pet needs to eat at least 18 grams of fiber but less than 25 grams of protein each day. Mark gives his dog Food A and Food B throughout the day. Food A has 2 grams of fiber and 3 grams of protein in each serving. Food B has 4 grams of fiber and 1 gram of protein for each...
January 14, 2012 by Deb

holy school
CaCO3 + H2 SO4 ------> CaSO4 + CO2 + H2 O 200 g of calcium carbonate are added to 4 L of water. a. What is the molarity of the calcium carbonate solution? b. How many moles of hydrogen sulfate would be needed to react with a 25 mL sample of the calcium carbonate solution? c...
March 3, 2013 by mamta

AP CHEMISTRY
An experiment was carried out to determine the value of the equilibrium constant Kc for the reaction. Total moles of Ag+ present = 3.6 x 10-3 moles Total moles of NH3 present = 6.9 x 10-3 moles Measured concentration of Ag(NH3)2+ at equilibrium= 3.4* 10-2 M Total solution ...
March 12, 2012 by Jamba

URGENT Chemistry question
a chemist wanted to make 100 grams of SO2. She had only 12 grams of sulfur and 4 grams of oxygen. Unfortunately, the amounts of reactants were not enough to make the desired product. How much S and O2 would she need in order to obtain the desired grams of product with no ...
November 3, 2011 by jermain

chemistry
how much lithium hydroxide will be needed to remove 75.0 grams of carbon dioxide?
January 21, 2011 by tim

Physics
The problem statement, all variables and given/known data A body is thrown upward and remains in air for 10 seconds , the initial velocity at which it was thrown in is? The attempt at a solution g = -10 , t = 10 s , vf = 0 , vi = ? Vf = vi + gt 0=vi + (-10) (10) Vi = 100 but ...
July 12, 2015 by Shahab Mirza

chemistry
Predict the products and then write the complete balanced chemical equation with states of matter: 1. Sulfuric Acid and sodium hydroxide 2. Aluminum and copper (II) sulfate 3. Silver nitrate and iron (III) chloride 4. Magnesium heated 5. Aluminum oxide
February 8, 2011 by Graham

chem
When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 1.0 M HCl is required to react completely with 4.00 g of magnesium i did 4.00g x (mol/24.31 g Mg) x (2 mol HCl/1 mol Mg) x (L/!.0 mol HCl) = .329 L why ...
March 26, 2009 by Anon

chemistry
Enter the formula and state of the major species that result when a few grams (about 0.01 mol) of each substance is added to 100 mL of water. When appropriate use water to form species such as the hydronium ion. Separate multiple species by commas. rubidium dihydrogen ...
June 6, 2010 by Judy

chemistry
calculate the molarity of 18.0 ml of h2so4 in 2.0l of solution?
December 5, 2010 by diane

chemistry
calculate pH of 0.1M NH4^- of 100ml of that solution?
February 13, 2011 by kabelo

chemistry
calculate pH of 0.1M CH3COOH of 100ml of that solution?
February 13, 2011 by kabelo

chemistry
Calculate the pH in a 0.00500 solution of NaOH.
February 21, 2011 by JC

organic chemistry
calculate the pH of a 1.25 x 10^-3 M HNO3 solution
May 2, 2011 by kathy

CHEM
Calculate the pH of a .7 M solution of ammonium chloride
September 22, 2011 by Heather

CHEM
Calculate the pH of a .7 M solution of ammonium chloride
September 22, 2011 by Heather

chemistry
Calculate the pH of a 0.0019 M HNO3 solution.
February 29, 2012 by krystal

chemistry
Calculate the pH of a 0.0019 M HNO3 solution. 2.7
February 29, 2012 by krystal

Chemistry
Calculate the pH of a 5.90x10-3 M solution of H2SO4.
March 5, 2012 by Chris

Chemistry
Calculate the [h30+] in a 0.010M solution of Sr(OH)2
April 25, 2012 by Saphire

Chemistry
If pH = 6.6, calculate the molar concentration of H^ + (aq) in the solution.
November 14, 2012 by Josh G.

Chemistry
Calculate PH of 0.05 M solution of ammonium acetate
July 31, 2014 by Jane

Chemistry
Calculate the pOH of a 0.410 M Ba(OH) solution.
March 4, 2015 by Anonymous

chemistry
calculate the pH of a 0.100M NH4Cl solution.
March 10, 2016 by amy

Chemistry
Calculate the ph of a solution that is 0.157m HCI?
May 4, 2016 by James

Math
omg thank you soo much for helping me and the 3 question is 4/x = 36/100 = 1.)Mrs. Neruda has 80 math student last year. This year she has 100 math students. What percent shows the ratio between the number of students last year and the number of students this year? #2)A can of...
January 3, 2007 by Anonymous

Dr. Bob Chemistry question
Ok this is what i got for the grams part now.... Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 = 20.51% %C2O4 = (51.64/98.18)*100 = 52.60% % Fe 3+ = (11.34/98.15) * 100= 11.55% % K + = (15.06/98.15) * 100 = 15.43 % 20.51 g H2O, 52.60 g C2O4 11.55...
May 5, 2008 by LT

Chemistry
1000 g of 55%(mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution?
May 2, 2012 by Wube

chemistry
You have been asked to do a dilution of a copper sulfate solution. The solution to be diluted is 2.88 M copper sulfate. What volume of the 2.88 M copper sulfate is required to make 250 mL of 1.03 M copper sulfate solution?
April 10, 2014 by Anonymous

chem
A solution prepared by dissolving 3.00 grams of ascorbic acid (vitamin C, C6H8O6), in 50.0 grams of acetic acid has a freezing point that is depressed by T = 1.33 oC below that of pure acetic acid. What is the value of the molar freezing point-depression constant for acetic ...
February 18, 2013 by Ace

Chemistry
How many grams of potassium can be obtained from the decompostion of 100 grams of KCl?
November 11, 2010 by Zach

chemistry
What will be the concentration if 40 grams of sugar is added to 100 grams of water?
July 24, 2011 by MANALI

Chemistry
How would you prepare 1.00L of 0.13m solution of sugar, C12H22O11? The density of the resulting solution is 1.10g/mL. m=molality
February 26, 2008 by Kelsey

math
solve by the substitution method 3x + 6y = 27 -2x + y = 12 what is the solution of the system..(type an ordered pair, or N if there is no solution) has to be like (3,5)please hlp me
November 8, 2008 by mikey123

Chemistry
What is [H3O+] in a solution obtained by dissolving 215 mL HCl(g), measured at 23 degrees C and 757 mmHg, in 4.30 L of aqueous solution?
February 14, 2009 by Raj

chemistry
If 150.0 Ml of HCL solution are required to react completely with .35 moles of solid NaOH whats the molarity of the solution?
October 12, 2009 by Aleander Azumah

Chemistry
What is the pH of a solution containing 0.10 M propanoic acid (HC3H5O2) and 0.10 M sodium propanoate after 0.02 mol of HCl is added to 1.0 L of the solution?
February 28, 2010 by Blake

Chemistry
4.54 g of hydrazoic acid ( HN3 ) is added to water to make a final solution of 504 ml. What is the pH of the solution ? Use Ka = 1.90 × 10−5
March 8, 2010 by Chelsea

MATH214
Solve each of the following systems, if possible. Indicate whether the system has a unique solution, infinitely many solutions or no solution. (a) 3y = x – 10 y = x – 2 (b)x + y = 5 3x + 3y = 15
March 9, 2010 by Rebecca

MATH214
Solve each of the following systems, if possible. Indicate whether the system has a unique solution, infinitely many solutions or no solution. x- 2y=3 4y- 2x=0
March 9, 2010 by Rebecca

math
6x-4y=20 and 4y-6x=-20 What is the solution of the system of equations for this problem? A)A point B)No solution C)Infinitely many solutions These points would have C correct?
March 28, 2010 by KiKi

Chemistry
Suppose you had a 1.00 m solution of AlCl3. Assuming complete dissociation, what is the theoretical change in the freezing point of this solution?
May 9, 2010 by Celeste

chemistry
3. What is the ka for a solution of choloracetic acid (C2H5ClO2) which has a pH of 1.52 in a 0.112M solution? Please reply me as soon as possible sir Thank you George.
June 15, 2010 by George

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 Aliana

College Chem
I need to be able to describe how to prepare 20 mL of a 0.0050 M KIO3 solution from a stock solution with a concentration of 0.020 M.
October 3, 2010 by Kelli

chemistry
A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.95°C. What is the solution's molality?
November 4, 2010 by MaryBeth

chemistry
A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.95°C. What is the solution's molality?
November 4, 2010 by MaryJ

chemistry
Determine the chloride ion concentration in a solution containing 50.0 g MgCl2 dissolved in 1500 mL of solution. a. 0.350 M b. 0.700 M c. 1.40 M d. 3.17 M e. 6.34 M
November 10, 2010 by princess

Chemistry
If 1.70 liters of 0.670 M CuSO4 solution is electrolyzed by passing 4.70 amps through the solution for 3.00 hr using inert electrodes.
November 19, 2010 by Dana

Chemistry
"A 25.0% solution of Al2(SO4)3 has a density of 1.75 g/ml. What is the mass of dissolved solute in 40.0 ml of solution?" How would one set this problem up?
December 8, 2010 by Kathryn

Algebra II-Please check my solution
Solve by elimination method-thanks fro checking my work 2x + 3y= 2 multiply this equation by 2= 4x + 6y = 4 4x-2y = -28 4x + 6y = 4 -4x -2y = -28 8y = 32 y = 4 2x + 3(4) = 2 2x + 12 = 2 2x + 2-12 2x = -10 x = -5 solution = (-5,4)
February 16, 2011 by Joella

biology
Suppose that the concentration of H+ in solution #1 is 10,000 times greater than the solution #2. What can you conclude about the difference in pH of these two solutions?
February 25, 2011 by mary

Chemistry
A volume of 10.0 mL of a 0.00650 M solution of Cl- ions are reacted with 0.500 M solution of AgNO3. What is the maximum mass of AgCl that precipates?
March 7, 2011 by Toni Jones

gen chemistry
How mucn 0.6 M barium chloride solution would be needed to completely react with 150mL of a 1.4 M sodium solution
April 7, 2011 by drea

chemistry
What is the molarity (mol/L) of sodium (Na) in a solution containing 0.4 mole ofNa + cation in 400 mL of an aqueous (water) solution?
April 16, 2011 by Ed

maths
what volume of distilled water must be added to 165mls of stock solution to make 1200mls of diluted solution
April 27, 2011 by Anonymous

chemistry
now lets say that this scientist wants to make 50 mL of a 0.250 M KC solution. How much of the 1.00 M "stock" solution whould he use
May 25, 2011 by heather

chemistry
A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.62°C. What is the solution's molality?
June 3, 2011 by kellyb

chemistry
I also have a question on making oxalic acid solution. What is the appearance of the solution should be? including transparency?
July 1, 2011 by blast

chemistry
I also have a question on making oxalic acid solution. What is the appearance of the solution should be? including transparency?
July 1, 2011 by blast

chem
a volume of 10.0 ml of a 0.00450 M solution of Cl- ions are reacted with 0.500 M solution of AgNO3.What is the maximum mass of AgCl that precipitates?
October 10, 2011 by sam

Chemistry for Engineers
How many mL of .2475M Sr(OH)_2 solution are needed to neutralize 25 mL of 0.1542M HCL solution in the reaction 2HCl + Sr(OH)_2 -> SrCl_2 + 2H_2_O
October 11, 2011 by Austin

chemistry
A solution of sulfuric acid in water that is 25% H2SO4 by mass has a density of 1178 g/ml. Which expression gives the molarity of this solution?
November 16, 2011 by help

CHEMISTRY
What will be the concentration if 52mL of a solution that is 12ppm in sodium chloride is diluted with enough water to make 97mL of solution?
February 14, 2012 by Sarah

Chemistry
A solution is prepared by mixing 3.5 g of nitric acid with enough water to make 8.00 L of solution. Find the [H3O+], [OH-], pH and the pOH
March 7, 2012 by Mary

BioChem
Write the chemical equation for the reaction that occurs when you add NaOH solution to NaH2PO4/Na2HPO4 buffer solution
March 23, 2012 by Megan

chemistry
To what volume must 481 mL of 12 M Ca(OH)2 solution be diluted to make a 2 M Ca(OH)2 solution? a)1.352L b)2.886L c)2.10833L d)none of the above
April 4, 2012 by Allison

chemistry
If 3.5 ml of distilled water is added to 1.5 ml of a 0.150M solution of CoCl2 what is the concentration of the resulting solution? please show the work
April 9, 2012 by Tonya

Chemistry!!
A solution has [Al^3+]=8.0×10−2 M and [HC2H3O2]= 1.10 M. What is the maximum quantity of NaHC2H3O2 that can be added to 200.0 mL of this solution before precipitation of Al(OH)3 begins?
April 13, 2012 by John

chemistry
you dissolve 0.70 moles of HCI in enough water to prepare 250ml of solution. what is the molarity of the solution you have prepared
April 15, 2012 by aileen

Science
If you have a 12M container of HCl avaliable. How much of this solution is needed to make up a 5.0L solution of 0.10M concentration?
May 7, 2012 by Sue

Chemistry
What mass of chromium II chlroide (CrCl2) is dissolved in 150.0mL of solution to prepare .250M solution? Please Help
May 28, 2012 by Jack

algebra
Solve using the eliminattion method. Show your work. If the system has no solution or an infinite number of solution, state this. -2x-8y==42 -4x+6y=-18
July 5, 2012 by Ann

Chem 2
A solution is made by mixing 47.0 mL of ethanol, C2H6O, and 53.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C?
July 14, 2012 by Pagye

Chemistry II
A solution is made by mixing 38.0 mL of ethanol, C2H6O, and 62.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C?
July 17, 2012 by Sam

Science
10.0 g of KCl and 18.5 g of CaCl2 were dissolved in 500 mL of water. How many mL of 1.57 M AgNO3 solution would be required to precipitate all Cl- from the solution?
October 19, 2012 by Jared

Chemistry 1115
What is the chemical equation for the reaction that occurs when you add 0.1 M NaOH solution to the HC2H3O2-NaC2H3O2 buffer solution?
November 25, 2012 by Marci

Ph CHEM
A solution is found to contain 1 x 10-4 OH− ions, determine the pH of this solution. I did this problem and got 4 but it is not going in as correct. -log(1*10^-4)=4
November 27, 2012 by Lara

Math: Please check answer
3. Which of the following is a solution of x² + 14x + 112 = 0? If necessary, round to the nearest hundredth. A.) x = –0.24 B.) x = –4.24 C.) 4.24 *D.) no solution Thank you
February 28, 2013 by cassie

Chemistry
0.15g of hydrogen chloride HCl is dissolved in water to make 8.0L of solution. What is the pH of the resulting hydrochloric acid solution?
March 1, 2013 by Jonah

chemistry
A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.62°C. What is the solution's molality?
March 3, 2013 by Catherine

Honors Chemistry
what volume of solution does a 3.0 molar solution need to have in order to contain 1.8 moles of sodium sulfate?
April 3, 2013 by Erin

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