Saturday
April 19, 2014

Search: Calculate the molarity of a solution of sodium hydroxide, NaOH, if 23.64 mL of this solution is needed to netralize 0.5632 g of potassium hydrogen phthalate

Number of results: 49,186

molarity
If it's 12 L of solution, the molarity is 3.4/12 = ??
Wednesday, December 10, 2008 at 11:51pm by DrBob222

Chemistry
Need help on how to balance equations. Here are a few of the problems. First let me supply the w/s directions: Predict the products of the reactions below. Then, write the balanced equation and clasify the reactions. Here are examples of a few of the different kinds of ...
Monday, April 20, 2009 at 10:26pm by Annonomous

chemistry
Find the percent by mass of sodium chloride in a 1.35 M NaCl solution. The density of the solution is 1.06 g/mL..............how do I go about doing this question thanks!
Saturday, December 4, 2010 at 12:47am by Stacy

chemistry
Find the percent by mass of sodium chloride in a 1.35 M NaCl solution. The density of the solution is 1.06 g/mL..............how do I go about doing this question thanks!
Monday, December 6, 2010 at 1:21pm by wade

chemistry
How many moles of sodium bicarbonate are contained in 1mL of a saturated solution of NaHCO3 (approximately 1g of solute is dissolved per 9mL solution)?
Wednesday, October 5, 2011 at 7:58pm by Tiffany

Chemistry
It requires 25.1 mL of 0.110 M HCl to titrate 12.0 mL of an NaOH solution of unknown concentration. What is the NaOH concentration?
Monday, February 27, 2012 at 7:07pm by Kyle2

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!
Monday, April 23, 2012 at 11:37am by Jack

biochemistry
I just wanted to clarify anwsers. Question 23. Nucleotides contain phosphate groups bonded to the.. A) C3' or c5' atoms B). C3 or C3' atoms C). N1 or N9 Atoms D). C3 or N9 atoms E). C3 or C5 atoms The anwser that I chosen in A. QUESTION 19. When the hydrogen ion concentration ...
Friday, October 2, 2009 at 5:42pm by james

chemistry
We add excess Na2CrO4 solution to 27.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.420 grams. What is the molarity of the AgNO3 solution? Answer in units of M
Wednesday, September 19, 2012 at 4:55pm by cheri

Chemistry-iodometric titration
In an iodometric titration, excess potassium iodide solution (KI) is added to the sample.Analyte such as chlorine liberates iodine from KI under acidic condition. Liberated iodine is titrated against standard sodium thiosulphate. The concentration of analyte in the sample is ...
Wednesday, August 4, 2010 at 7:39pm by angela

Chemistry
moles NaOH = M x L = 0.613 x 0.03375= ?? So moles acidity in the solution (the vinegar) is the same as moos NaOH since the reaction is a 1 mole to 1 mole ratio. Since moles vinegar is in 25 mL, then M = moles/L and M vinegar = moles from above/0.025 = ?? OR, if you don't want ...
Tuesday, June 22, 2010 at 4:44pm by DrBob222

Chem
What is the pH of the resulting solution if 30.00 mL of 0.100M acetic acid is added to 10.00mL of 0.100 M NaOH? For acetic acid, Ka=0.000018. I know that NaOH is a strong base and acetic acid is a weak acid. What is the equation: C6H5COOH+NaOH<--> C6H5COOH Once I get ...
Wednesday, February 27, 2008 at 4:22pm by Sarah

Chemisty
How many mols MgSO4 so you have? That is moles = M x L = 0.541 x 0.148 = ? Using the cofficients in the balanced equation, convert moles MgSO4 to moles NaOH. That is ?moles MgSO4 x (2 moles NaOH/1 mol MgSO4) = ?moles MgSO4 x 2/1 = ? moles MgSO4. Then M = moles/L soln MNaOH = ...
Tuesday, February 7, 2012 at 9:39pm by DrBob222

Chemistry
A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and found to have a mass of 258 mg. What mass of baium was in the original solution? (Assume that all of...
Thursday, April 12, 2012 at 8:34pm by Beth

Chemistry
The specific heat of a solution is X J/g*degreesC and its density is Y g/mL. The solution was formed by combining Z mL of solution A with Z mL of solution B, with each solution initially at J degreesC. The final temperature of the combined solutions is D. The heat capacity of ...
Friday, April 2, 2010 at 10:52am by Fred

Chemistry
Calculate the molarity of the solutions made by dissolving the following amounts of solute in water and making the volume up to the stated value. 5.0mol nitric acid in 2.0L Do I just find the molarity for nitric acid only, because when I write out the balanced equation, the ...
Tuesday, August 28, 2012 at 3:43am by Jiskhaa

Analytical Chem
First I would calculate the molarity of the iron(III) nitrate solution. 1.110 g/mL x 1000 mL x 0.60 = g/L Then g/molar mass = mols and this is the M of the soln. Then dilute that stock soln using the dilution formula. c1v1 = c2v2 where c = concn v = volume.
Wednesday, April 18, 2012 at 6:05am by DrBob222

applied chemistry
figure moles in 69.3g. moles: 69.3/90=you do it. Molarity of original solution: 69.3/90=.77M So you want to decrease molarity to .150, you do that by diluting with water. You want to dilute it .77/.150 times, or 5.13 times, which means 4.13 parts water, and 1 part original ...
Thursday, March 8, 2012 at 10:12am by bobpursley

chemistry
1 liter of a 1 M lithium hydroxide solution is added to 1 liter of a 1 M barium chloride solution, and a precipitate forms. What ions are left in solution after the reaction is complete? What ions are left in solution after the reaction is complete?
Monday, November 22, 2010 at 4:32am by Elise

Chemistry
There have been a number of posts lately concerning NaOH/HCl and NaOH/HAc (acetic acid--my abbreviation). However, in all cases, moles NaOH are less than moles HAc and an acetic/acetate buffer is created which behave markedly different than the solution you posted. I don't see...
Monday, May 3, 2010 at 2:50pm by DrBob222

Chemistry - Solubility
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 M NaOH (7.5 mL of HCl needed to titrate) Flask C: 0.025 M NaOH (10.8 mL of HCl needed to titrate) Flask D: 0....
Monday, March 31, 2014 at 10:38pm by PleaseHelpThankYou!

chem
I had to go and do a oxidation- reduction lab where: I went oxidized borneol with sodium chloride and added 0.360g racemic borneol, 1ml acetone, and .30ml glacial acetic acid. Then I heated and added through the condenser every 4 minutes .5ml 6% sodium hypochlorite. I then did...
Saturday, November 24, 2007 at 7:40pm by ~christina~

Chemistry
moles H2C2O4 = grams/molar mass = ?? Using the coefficients in the balanced equation, convert moles H2C2O4 to moles NaOH. That will be ??moles H2C2O4 x (2 moles NaOH/1 mole H2C2O4) = ??moles H2C2O4 x 2 = xx moles NaOH. Then M NaOH = moles NaOH/L NaOH, and round to the ...
Tuesday, June 7, 2011 at 7:06pm by DrBob222

chem
1.Pippete 20ml of 0.1M acetic acid and 20ml of 0.1M NaOH into a 100ml beaker (Remember that the final volume of this solution is the sum of the volumes of the acetic acid and NaOH solutions that have been mixed) 2. Pippete 20ml of 0.1 acetic acid into another 100ml beaker and ...
Sunday, April 26, 2009 at 4:05pm by tomi

chemistry
How much of each starting material would you use to prepare 2.00 L of each of the following solutions? 0.240 M NaOH from 1.00 M NaOH stock solution what do i do with the .100 M and .240 M??
Wednesday, March 4, 2009 at 6:17pm by lyne

Chemistry
The key to this type problem is to recognize what is in the solution at the point of calculation. 0 mL must be pure formic acid. The equivalence point is the salt, sodium formate. so the pH is determined by the hydrolsis (the Kb) of the salt. At 40.00 mL, (past the equivalence...
Sunday, March 1, 2009 at 1:34pm by DrBob222

Chem
If you had a 5.55 M solution of NaCL that has a density of 1.025g/ml at 20C, what would the concentration be of the solution in molarity.I got .541 m am I right or my calculation totally off?
Tuesday, August 25, 2009 at 10:28pm by Sammy

URGENT CHEMISTRY
A solution of hydrogen peroxide is 24.26% by mass and has a density of 1.11g/cm^3. the molarity of the solution? 7.54M .273M 8.03M 8.37M none of these
Wednesday, March 9, 2011 at 5:37pm by Cotton McKnight

college general chem
If 15.0 of is dissolved in enough water to form 270 of solution, what is the molarity of the solution? How many milliliters of 4.45◊10−2 contain 4.05 of solute
Monday, October 3, 2011 at 7:31pm by ronie

Chemistry
Calculate the molar solubility of MgCO3 in a solution that already contains 1.7◊10−3 M sodium carbonate. MgCO3 Ksp = 6.82 x 10-6 IMPORTANT NOTE: You must use the quadratic equation to solve this problem. (DrBob222- thank you so much for all your help!)
Friday, April 26, 2013 at 1:54am by Chloe

Chemistry
A solution contains 40.0 g of sodium chloride and 200.0 g of water. Calculate the NaCl concentration as a a) mass percentage, b) molality, c) mole fraction. I have trouble finding mole fraction. I believe I've got the other two, but I'm not 100% sure.
Friday, May 24, 2013 at 11:07pm by Mike

chemistry
How many milliliters of .50 M NaOH solution are required to titrate 40.0 mL of a 0.10 M H2SO4 solution to an end joint?
Saturday, March 6, 2010 at 4:43pm by lacey

chemistry
Determine how many milliliters of 0.102M NaOH solution is needed to neutralize 35.0mL of 0.125M H2 SO4 solution.
Tuesday, March 1, 2011 at 6:44pm by jane

chemistry
how many millimeters of a 2.0M NaOH solution are needed to neutralize 20.0ml of a 2.5M CH3COOH solution? How do I figure this out?
Sunday, October 9, 2011 at 4:16pm by Anonymous

biology
if i have 1 litter of a 1M solution of HCI, how many grams of NaOH must i add to neutralize the solution and adjust the ph to 7
Thursday, March 22, 2012 at 10:00am by de

chemistry
how many grams of NaOH should be used to make 200 mL of a 0.24M solution starting with a .4M HCL solution
Saturday, September 22, 2012 at 2:29am by Tyler

college chemistry
2.00g of NaOH are dissolved in water to make 5.00L of solution. What is the concentration of hydronium ions, [H3O+], in this solution?
Sunday, January 24, 2010 at 9:23pm by Anonymous

Chemistry
The details you give from the lab manual are for the calculation of the molarity of the EDTA solution. M = moles/L. moles = grams/molar mass (formula weight) and you have all of that information. Then divide moles/0.500 L = molarity. Regarding the remaining part of the problem...
Sunday, March 14, 2010 at 10:53pm by DrBob222

Chemistry;
for a solution of the weak base, 0.075 M ethylamine C2H5NH2(aq), the hydroxide ion concentration (OH-) is 6.6x10^-3 M. Assume that temperature is constant and volumes are additive. a. Write the equilibrium dissociation equation. b. What's the pH of 0.075 M C2H5NH2(aq)? c. What...
Thursday, January 27, 2011 at 10:44pm by Sharon

chemistry
Here is the question: sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas: NaH(s)+H2O-->NaOH(aq)+H2(g) A sample of NaH weighing ________g will produce 982mL of gas at 28.0 C adn 765 torr, when the hydrogen is collected over water. ...
Wednesday, June 17, 2009 at 1:46pm by Gweedo

Chemistry
Hi Dr. Bob, this is a chemistry question. I don't know how to go about solving this problem: What is the pH of the solution created by combining 11.40 mL of the 0.10 M NaOH(aq)with 8.00 mL of the 0.10 M HC2H3O2(aq)? Here's what I have so far: (0.10M NaOH)(0.0114L)= 0.00114 mol...
Wednesday, October 28, 2009 at 8:53pm by Yo

chemistry
A student wants to determine of an irregularly shaped peice of sodium metal . The student is warned not to use water displacement to find the volume of the peice of sodium . Explain the reason for the warning and pffer a effective solution to the students' problems
Sunday, December 5, 2010 at 10:07pm by nina

Chemistry
For the reaction NaOH + HCl---> H20 + NaCl where the mass of NaOH is 2g and the Volume of Hcl is 100ml with a concentration of 0.5 mol/l. The initial temp is 25 and the final is 35, what is the amount of energy absorbed by the solution?
Tuesday, May 4, 2010 at 5:10pm by Hyde

chemistry
A solution is prepared by adding 1.00 g of solid \rm NaCl to 50.0 mL of 0.100 M \rm {CaCl_2}. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 m
Sunday, October 2, 2011 at 1:52pm by jared

chemistry
A solution of iron(III) thiocyanate was produced by dissolving 7.98 milligrams solid iron(III) thiocyanate in enough water to produce a 100.00 mL solution. What is the concentration, in molarity, of the solution?
Wednesday, November 6, 2013 at 11:33pm by Anonymous

chemistry
A solution is prepared by dissolving 0.5842g of oxalic acid (H2C2O4) in enough water to make 100.0ml of solution. A 10.00ml aliquot (portion) of this solution is then diluted to a final volume of 250.0ml. What is the final molarity of thus prepared oxalic acid solution?
Friday, November 18, 2011 at 1:00pm by NONO

Chemistry
Predict whether or not a precipitate will form upon mixing 75.0 mL of a NaOH solution with pOH = 2.58 with 125.0 mL of a 0.018 M MgCl2 solution. Identify the precipitate, if any. Express as a chemical rxn NaOH(aq) + MgCl2(aq) => NaCl(s) + MgOH(aq) I have to balacnce it and ...
Sunday, October 31, 2010 at 3:34pm by Anonymous

Chemistry
Hi I just wanted to verify a few answers to chem questions I'm working on. Was wondering if anyone could help? 1. Calculate the molar concentration of 2.34g of lithium hydroxide, LiOH disolved in water to make 750ml of solution. My answer was CLiOH = 0.133 mol/L nLiOH = 2.34g/...
Sunday, October 17, 2010 at 5:40pm by Andre

Chemistry
Hello Jiskha, I'm hoping you are able to help me with my homework. Its on General Chemistry. Question One - When the solid NH4NO3 is dissolved in water at 25 C, the temperature of the solution decreases. What is true about the signs of enthalpy (H) and (S) for this process? ...
Wednesday, May 9, 2007 at 8:22pm by Katrina

AP Chemistry
We add excess Na2CrO4 solution to 68.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.270 grams. What is the molarity of the AgNO3 solution? Answer in units of M
Wednesday, September 11, 2013 at 6:15pm by Gabriella

chem 101
We add excess Na2CrO4 solution to 42.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.590 grams. What is the molarity of the AgNO3 solution? Answer in units of M
Friday, October 18, 2013 at 7:07pm by maria

chemistry 101
We add excess Na2CrO4 solution to 42.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.590 grams. What is the molarity of the AgNO3 solution? Answer in units of M
Friday, October 18, 2013 at 7:13pm by maria

HELP!! Chemistry
molarity=mass/(molmass*volumeinLiters) a. mass=molarity*molemass*volumeinLiters b. see defination above on Molarity c.moles= molarity*volumeinliters
Thursday, September 26, 2013 at 2:33pm by bobpursley

chemistry
Start from a balanced equation NaOH + H2SO4 -> Na2SO4 + H2O you need to balance this. 10.0 x 0.15 = mmoles of H2SO4 the balanced equation will tell you how many moles of NaOH react with each moles of H2SO4 calculate the number of mmoles (X) of NaOH needed hence volume ...
Wednesday, November 17, 2010 at 12:49am by Dr Russ

science (chem)
But if I have to use excess acetic acid wouldn't that produce more water than another rxn which does not? I have to take out the water with anhydrous sodium sulfate after extracting with the water & sodium bicarbonate solution....but I guess that woudn't make a difference ...
Wednesday, February 27, 2008 at 10:04pm by ~christina~

Chemistry
Which of the following is the most effective buffer system for a pH value of 7.45? Assume all are 1M A. Carbonic acid and sodium bicarbonate B. Sodium bicarbonate and sodium carbonate C. Sodium dihydrogen phosphate and disodium hydrogen phosphate D Hydrogen cyanide and sodium ...
Wednesday, April 11, 2012 at 8:09am by Linda

chem 111 lab
KHP + NaOH ==> NaKP + H2O mols KHP = grams/molar mass From the equation, mols KHP = mols NaOH. M NaOH = moles NaOH/L NaOH
Monday, February 20, 2012 at 6:22pm by DrBob222.

chem.
In the equation .. HCL + NaOH --> H2O + NaCl would the sodium chloride be aqueous or solid?
Friday, December 19, 2008 at 10:10am by Anonymous

Chemistry -- to Dr.Bob
yes, I'll be on tomorrow. If you dilute the acid with 100 mL water, you don't change the mols of acid or the mols of base or the mols of salt formed or the mols of acid remaining. (a) In the NaOH/HCl problem, the only thing that changes is the final mols/L (mols is the same ...
Friday, May 2, 2008 at 9:41pm by DrBob222

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 400 of a solution that has a concentration of ions of 1.20 ?
Wednesday, September 29, 2010 at 6:45pm by Marry

Chemistry
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 625 of a solution that has a concentration of ions of 0.800
Thursday, October 13, 2011 at 5:04pm by Maddy

science
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 350 of a solution that has a concentration of ions of 0.500 ?
Friday, October 28, 2011 at 10:58pm by Anonymous

chemistry
if air bubbles remain in the burette during the titration, what will the effect be on the calculated values of :: a- the concentration of NaOh b- the molarity of H2SO4 ??
Saturday, April 2, 2011 at 11:58am by Huda

chemistry
molarity = moles/L of solution. No, it will not be 2.00 M. Actually, it will be very close to 2.00 molal. The definition of molarity is the number of moles divided by the liters OF SOLUTION. To prepare 2.00 M KI, one would dissolve 2.00 moles KI (weighed very accurately), ...
Monday, November 16, 2009 at 5:22pm by DrBob222

Chemistry
A 100 milliliter sample of 0.100-molar NH4Cl solution was added to 80 milliliters of a 0.200-molar solution of NH3. The value of Kb for ammonia is 1.79 x 10^-5. (a) What is the value of pKb for ammonia? (b) What is the pH of the solution described in the question? (c) If 0.200...
Monday, April 26, 2010 at 8:49pm by Nicole

Chemistry
A 100 milliliter sample of 0.100-molar NH4Cl solution was added to 80 milliliters of a 0.200-molar solution of NH3. The value of Kb for ammonia is 1.79 x 10^-5. (a) What is the value of pKb for ammonia? (b) What is the pH of the solution described in the question? (c) If 0.200...
Monday, April 26, 2010 at 8:58pm by Nicole

Chemistry - Heat Calculations
Calculate the heat released when 4 L Cl2 with a density of 2.46 g/L at 25 degrees C reacts with an excess of sodium to form solid sodium chloride at 25 degrees C.
Monday, April 19, 2010 at 9:31pm by Akira

chemistry
35.00mL of 0.250M KOH solution is required to completely neutralize 10.50mL of H2SO4 solution. what is the molarity of the sulfuric acid solution KOH(aq)+ H2SO4 -------> K2SO4(aq) +H2O(l
Thursday, March 15, 2012 at 7:57am by brina

chemistry
10. An aqueous solution is prepared by diluting 3.30 mL acetone, CH3COCH3, (d=0.789 g/mL) with water to a final volumeof 75.0 mL. The density of the solution is 0.993 g/mL. What is the molarity and molality of acetone in this solution?
Tuesday, April 3, 2012 at 11:46am by Anonymous

chemistry
We'll call benzoic acid HB. HB + NaOH ==> NaOH mols HB = grms/molar mass Look at the equation (the coefficients) 1 mol NaOH = 1 mol HB; therefore, mols HB = mols NaOH. Then M NaOH = mols NaOH/L soln.
Wednesday, May 9, 2012 at 10:58pm by DrBob222

Chemistry
If your solutionís final volume of 32.55 mL yields 3.6 grams of AgCl, determine the Molarity of the final solution. Also, how many milliliters of a 1.85 M solution of AgNO3 did you add to an excess of aqueous NaCl to provide the 3.6 grams of AgCl? Actually this question is two...
Tuesday, March 26, 2013 at 12:25am by Shoba

Gen Chem 1
A tanker truck carrying 2.01◊10^3kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuic acid is 95.0% H2SO4 by mass and has a density of 1.84g/L. Sodium Carbonate (Na2CO3)is used to neutralize the the sulfuric acid spill. How many kilograms of ...
Wednesday, October 6, 2010 at 4:41pm by Rachel

chemistry
An aspirin tablet weighing 0.548 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 ...
Thursday, May 10, 2007 at 10:08pm by jared

Chemistry
If 15.0ml of a 6.0M HCl solution is diluted to 75.00ml, what is the molarity of the diluted solution?
Saturday, March 5, 2011 at 4:58pm by jake

chemistry
what is the molarity of a HCl solution that contains 13.0 g of HCl in 125 mL of solution? Answer in units of M
Thursday, March 8, 2012 at 8:26pm by please help !

chemistry
A solution contains 5.00% (by mass)NaCl. The density of the solution is 1.064 g/cm^3. What is the molarity of NaCl?
Monday, November 19, 2012 at 1:16pm by evelyn

Chemistry
You will only see evidence of it if you use enough base to cause the di or polyprotic acid to donate the 2nd or subsequent protons. 10mL of a 0.1 M solution of H2SO4 is a a di protic acid. If I only add 10mL of a 0.1 M solution NaOH then I will not see signs that it is a ...
Tuesday, August 13, 2013 at 1:40pm by Devron

Chemisty
Vol NaoH titration Ml Naoh (1L/1000 mL) (.270 M (NAOH)= mol NaOH
Monday, January 14, 2013 at 5:11pm by Bellam

Biochem
Desribe the preparation of 2.00 L of 0.100M pH 9.00 glycine starting with the sodium chloride salt of zwitterionic glycinhe and 1.00M NaOh. If a reaction that generated 2.00 mmoles of base were carried out in 100 mL of the above buffer, what would be the final solution pH? ( ...
Tuesday, September 13, 2011 at 6:08pm by Sandra

chemistry
When sodium is heated with sulfur,sodium sulfide is product. What mass of sodium sulfide can be formed by heating 12.8 g of sulfur with 9.2g of sodium?
Thursday, April 18, 2013 at 1:51am by musa

Chemistry
I am not really sure how to do this: Calculate the pH when 1.0*10^-3 moles of solid NaOH is added to a) One liter of 9.1*10^ -6 M HCL b) One liter of a solution containig 0.05 M CH3COOH and 0.1 M CH3CooNa
Tuesday, August 11, 2009 at 7:28pm by Saira

chemistry
How much 0.150 M sodium hydroxide would be required to just neutralize 15 mL of 0.175M hydrochloric acid? 15mL x 0.150M/0.175M=12mL correct!
Tuesday, June 29, 2010 at 3:16pm by Jetta

Chemistry
How many moles of sulfuric acid are required to neutralize 0.80 mol of sodium hydroxide? H2SO4 + 2NaOH -> Na2SO4 + 2H2O I got 0.40 mol. Is this right?
Monday, May 13, 2013 at 2:35pm by Anonymous

chemistry
Write the equation and balance it. HCl + NaOH ==> NaCl + H2O 1. moles HCl used = M x L = ?? 2. Using the coefficients in the balanced equation, convert moles HCl to moles NaOH. Since everything is a 1:1 ratio, that means moles NaOH = moles HCl. 3. Then M NaOH = moles NaOH/L...
Wednesday, June 15, 2011 at 2:07pm by DrBob222

chemistry
In a .25 M solution, a weak acid is 3.0% dissociated. A. calculate the pH of the solution B. calculate the Ka of the acid Please explain steps.
Monday, March 19, 2012 at 6:25pm by anonymous

Chemistry
What is the molarity of 550.0 mL of KOH solution, that reacts completely with 675 mL of a 0.450 M CrCl3 solution?
Monday, September 27, 2010 at 7:28pm by Tara

Chemistry
The density of a solution of 3.69g KBr in 21.70g H2O is 1.11g/mL. What is the molarity of KBr in the solution.
Sunday, October 10, 2010 at 11:43pm by Jude

chemistry urgent
if 500 ml of HCl solution is needed to react with 2.43 g of Mg, what is the molarity of the HCl solution?
Tuesday, November 30, 2010 at 1:14pm by Lynn

Chemistry
What is the molarity of the resulting solution when 300. mL of a 0.400 M solution is diluted to 800. mL?
Monday, December 6, 2010 at 5:28pm by Ivy

chemistry
a 3.5L sample of a 5.8M NaCl solution is diluted to 55L.What is the molarity of the diluted solution
Sunday, November 6, 2011 at 7:08am by Monique

Chemistry
An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? b. What is the mas in milligrams of 0.0457 mole of magnesium hydroxide?
Monday, July 1, 2013 at 11:58am by Glenn

Chemistry
An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? b. What is the mas in milligrams of 0.0457 mole of magnesium hydroxide?
Monday, July 1, 2013 at 12:07pm by Glenn

AP chemistry
moles KHP = grams/molar mass Substitute and solve for mols. KHP + NaOH ==> NaHP + H2O so the reaction is 1:1 and moles KHP = moles NaOH. Then M NaOH = moles NaOH/L NaOH. To obtain L NaOH, you will need to subtract the final buret reading - initial buret reading and convert ...
Sunday, October 24, 2010 at 8:29pm by DrBob222

Chemistry
A sample of 1.029g of KC8H5O4 was titrated with an NAOH solution of unknown concentration. If 22.83 mL of base was used to reach the endpoint, what was the concentration of NaOH? What mass of KC8H5O4 should be used such that a volume of NaOH between 35-40 mL is needed to reach...
Thursday, November 1, 2007 at 9:20pm by Matt

chemistry
for our lab, we are given the molarity of ClO-. We are then supposed to use beer's law to determine the molarity of the dye that was used to make the solution with. For the dye, use the first absorbance value, Ao, and calculate the initial concentration of the dye using Beerís...
Monday, February 21, 2011 at 11:15am by Anonymouse one

Chemistry
A student did not fully mix the solution of Oxalic Acid in the volumetric flask predict and explain the effect of the range of the students titration volumes when using the NaOH solution to titrate the Oxalic Acid solution
Thursday, December 2, 2010 at 11:39pm by andrea

Chemistry
A solution contains 25 mmol of H3PO4 and 10. mmol of NaH2PO4. What volume of 2.0 M NaOH must be added to reach the second equivalence point of the titration of the H3PO4 with NaOH?
Saturday, March 23, 2013 at 5:32pm by Holly

Chemistry - Solubility
INFORMATION: [HCl] = 0.1388 M We placed 0.5 g Ca(OH)2 in 100 mL of the following solutions: A 25 ml aliquot was used Flask A: Distilled Water (7.4 mL of HCl needed to titrate) Flask B: 0.05 M NaOH (7.5 mL of HCl needed to titrate) Flask C: 0.025 M NaOH (10.8 mL of HCl needed ...
Monday, March 31, 2014 at 10:45pm by PleaseHelpThankYou!

chemistry
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). Delta pH=? Calculate the change in pH when 4.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution. Delta pH=?
Sunday, July 8, 2012 at 11:17pm by rachel

chemistry
0.4324 g sample of a potassium hydroxide-lithium hydroxide mixture requires 28.28 ml of 0.3520 M HCl for its titration to the equivalence point. What is the mass percent lithium hydroxide in this mixture?
Friday, November 16, 2012 at 11:15am by nooor

Pages: <<Prev | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | Next>>

Search
Members