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July 22, 2014

Search: diluted pH

Number of results: 681

Chemistry
A 200 mg/dl solution was diluted 1:10. This diluted solution was then additionally diluted 1:5. What us the concentration of the final dilution?
March 24, 2009 by Jessi

chemistry
A stock solution of 0.0100 M KMnO4 is diluted by taking 15.5 mL of it and diluting it to 100.0 mL. From this diluted solution, 5.00 mL is taken out and diluted to 100.0 mL. What is the concentration of the solution obtained in the end
March 13, 2012 by carla

chemistry
78.7 mL sample of a 4.81 M sucrose solution is diluted to 120.0 mL. What is the molarity of the diluted soluti?
December 4, 2011 by Amanda

chemistry
78.7 mL sample of a 4.81 M sucrose solution is diluted to 120.0 mL. What is the molarity of the diluted soluti?
December 4, 2011 by Amanda

chemistry
78.7 mL sample of a 4.81 M sucrose solution is diluted to 12.0 mL. What is the molarity of the diluted soluti?
December 4, 2011 by Aamnda

chemistry
exactly 20 mL of .0520M Pb(NO3)2 is diluted to a final volume of 100 mL. What is the molar concentration of the diluted solution?
June 13, 2011 by chelsea

chemistry
A 500 ml bottle of 16 M hydrocholric acid is diluted to a final volume of 5,0 liters .. what is the concentration of the new diluted , HLC sloution
May 2, 2012 by Anonymous

Chemistry
Hi,can I have your help? I'm just trying to solve a few Dilution Solution problems. I'm stuck on these two,and I wish you could help. Here's one: A 500 mL bottle of concentrated acetic acid is diluted to make a 5.0% solution. Find the volume of diluted that is prepared? ...
December 8, 2010 by Cliff

Chemistry
I am hoping to receive help getting started with this problem, possibly some steps in the correct direction. Here is the question: 5.0mLs of a 6.0M solution of HCl was transferred to a 1000ml volumetric flask and diluted to volume w/ water. 50mLs of this solution was then ...
June 9, 2009 by Juggernaut

Chemistry
Then calculate the inital ClO^- concencentrations for 1st, 2nd, and 3rd reactions. Calculate [ClO^-] in a 6% bleach solution. A 6% bleach solution contains 6 grams of NaClO per 100 grams bleach. The density of 6% bleach is 1.07g/mL. Chemical reaction: Blue dye + ClO^- -->...
February 28, 2012 by Cassandra

Chemistry
A volume of 25.0 mL of 8.0 M acetic acid is diluted with sufficient water to prepare 1.00 liter of solution. What is the concentration of the diluted solution?
March 9, 2008 by Allie

Chemistry
If a 25.0 mL sample of 0.500 M HCl solution were diluted 125-fold, what would be the volume and concentration of the diluted solution?
April 4, 2011 by Chris

Chemistry
A 5.0−L sample of a 5.4M NaCl solution is diluted to 70L . What is the molarity of the diluted solution? How would you set this up and answer it?
May 1, 2014 by AF

Chemistry
72.0 ml of a 1.50 M solution is diluted to a volume of 288 mL. A 144 mL portion of that solution is diluted using 185 mL of water. What is the final concentration?
January 24, 2011 by Anonymous

Chemistry
72.0 ml of a 1.50 M solution is diluted to a volume of 288 mL. A 144 mL portion of that solution is diluted using 185 mL of water. What is the final concentration?
January 25, 2011 by Anonymous

Chemistry
75.0 mL of a 1.80 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 187 mL of water. What is the final concentration?
August 26, 2012 by Amanda

Chemistry
75.0 mL of a 1.80 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 187 mL of water. What is the final concentration?
August 26, 2012 by Amanda

Chemistry
67.0 mL of a 1.50 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 163 mL of water. What is the final concentration?
October 2, 2012 by Anonymous

Chemisty
74.0 mL of a 1.80 M solution is diluted to a volume of 248 mL. A 124-mL portion of that solution is diluted using 135 mL of water. What is the final concentration?
January 14, 2013 by Paul

Chemistry
78 mL of a 1.60M solution is diluted to a volume of a 238mL. A 119-mL portion of that solution is diluted using 133 mL of water. What is the final concentration
April 13, 2012 by Sam

Chemistry
54.0 mL of a 1.50 M solution is diluted to a total volume of 258 mL. A 129-mL portion of that solution is diluted by adding 165 mL of water. What is the final concentration?
February 2, 2013 by Sara

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
How many ml of 0.05M kmn04 acidic are diluted to oxidize 2gm of fes04 is diluted solution The answer 52.63 ml I want you step by step clearly explain Thank you for Bob
January 27, 2013 by Fai

Chemistry
A 10 mL sample of 1.5 M Potassium Phosphate is placed in a 100 mL volumetric flask and diluted to the mark. What is the Molar concentration of Potassium ions in this diluted solution?
April 11, 2013 by Jo

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
suppose a pippetting error was made when preparing the diluted vinegar, but the diluted vinigar solution was uniform and the naoh titration values were consistant. when will the student learn that the experiment result was not accurate explain
December 3, 2010 by andrea

Chemistry
suppose a pippetting error was made when preparing the diluted vinegar, but the diluted vinigar solution was uniform and the naoh titration values were consistant. when will the student learn that the experiment result was not accurate explain
December 3, 2010 by peter

AP Chemistry
If you combine 2.00 ml 2.0 x 10^-3 M KSCN and 98.00 ml 2.0M Fe(NO3)3 what is the concentration of FeSCN? I know the equation (V concentrated*M concentrated)=(V diluted *M diluted) should be used, but how do you go about that when you have two initial substances?
March 12, 2008 by Emily

Chemistry
59.0 mL of a 1.80 M solution is diluted to a total volume of 268 mL. A 134-mL portion of that solution is diluted by adding 171 mL of water. What is the final concentration? Assume the volumes are additive.
March 19, 2013 by Robert

chemistry
53.0 mL of a 1.50 M solution is diluted to a total volume of 258 mL. A 129-mL portion of that solution is diluted by adding 195 mL of water. What is the final concentration? Assume the volumes are additive.
March 26, 2013 by Jen

chemistry
59.0 mL of a 1.40 M solution is diluted to a total volume of 278 mL. A 139-mL portion of that solution is diluted by adding 129 mL of water. What is the final concentration? Assume the volumes are additive.
April 17, 2013 by lee

Chemistry
77.0 mL of a 1.20 M solution is diluted to a total volume of 288 mL. A 144-mL portion of that solution is diluted by adding 155 mL of water. What is the final concentration? Assume the volumes are additive.
May 10, 2013 by Gmp

Chemistry-please help
Hi, I have a queestion on Gas Chromatography(GC). The following were injected into the GC systemk: - 1) 1% sample solution in acetone 2) a 500 times dilution of item 1) The retention time of the main peak in the diluted sample solution 2) shifted by ~ 2min. The expected area ...
September 18, 2011 by jess

Chemistry- dilution
51.0 mL of a 1.20 M solution is diluted to a total volume of 248 mL. A 124-mL portion of that solution is diluted by adding 125 mL of water. What is the final concentration? Assume the volumes are additive.
October 13, 2013 by Chelsea

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

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

Chemestry
IF 121ml of a 1.0 M glucose solution is diluted to 500.0 mL, what is the molarity of the diluted solution?
November 5, 2013 by Earl

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 20, 2008 by un

chem
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 ...
April 18, 2011 by CHEMCHEM

Chemistry
If 12.90 mL of a 18.2 Weight% solution of sodium chloride is diluted to a final volume of 3.00 liters, what is the Molar concentration of the diluted solution? The density of the original solution is 1.12 g/mL.
January 23, 2011 by Danielle

Analytical Chemistry
25.0 mL of a 0.1067 M Solution of nickel (II) sulfate is diluted to 250 mL with water. 10 mL of this solution is taken and diluted to 1.0 L. Calculate the concentration of [Ni2+] in the final solution in ppm.
February 11, 2014 by Anonymous

Chemistry
A 3.0 -L sample of a 5.8 M NaCl solution is diluted to 65 L. What is the molarity of the diluted solution?
November 30, 2010 by Kelsey G

chemistry
if 25.00 mL of 1.04 M Na2CO3 is diluted to .500 L, what is the molarity of Na2CO3 in the diluted solution?
September 6, 2012 by England

chemistry
If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?
October 6, 2013 by Anonymous

chemistry
If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?
October 6, 2013 by Sean1987

Chemistry
A 25 mL sample of waste water was treated with acid and SCN- to form an intense red complex. This complex was diluted to 100.0 mL and put in a variable pathlength cuvet. For comparison, a 10.0 mL reference sample of 6.8 x 10-4 M Fe3+ was treated with acid and SCN-, and diluted...
November 27, 2011 by Ken

chemistry
A 10.0 ml diluted chloride sample required 44.89 ml of 0.01982 M AgNO3 to reach the Fajans end point. how many moles of Cl- ions were present in the sample? What was the concentration of chloride in the diluted solution?
October 8, 2012 by lin

Chemistry-help
Hi, I have a question on Gas Chromatography(GC). The following were injected into the GC system: - 1) 1% sample solution in acetone 2) a 500 times dilution of item 1) The retention time of the main peak in the diluted sample solution 2) shifted by ~ 2min. The expected area ...
September 19, 2011 by jess

chemistry
An aqueous solution with a pH of 3.00 is diluted from 2.0 L to 4.0 L. Wht is the pH of the diluted solution?
May 5, 2009 by j

Chemistry
If 3.0 L of a 5.0 M SrCl_2 solution is diluted to 40 L, what is the molarity of the diluted solution?
October 5, 2010 by Lyz

Chemistry
If 4.0 L of a 4.8 M SrCl2 solution is diluted to 50 L , what is the molarity of the diluted solution?
November 1, 2010 by Lisa

Chemistry
If 4.0 L of a 4.8 M SrCl2 solution is diluted to 50 L , what is the molarity of the diluted solution?
November 1, 2010 by Lisa

chemistry
If 4.0 L of a 4.9 M SrCl2 solution is diluted to 40 L, what is the molarity of the diluted solution?
November 20, 2010 by Lisa

chemistry
A 45.8mL sample of 5.8M KNO3 solution is diluted to 1.00L. What volume of the diluted solution contains 15.0 g of KNO3.
November 6, 2011 by Monique

chemistry
Solution A, while in a 1.0 cm cell, has an absorbance of 0.390 and a [Cu2+] = 0.0283 M. Then, 6.57 mL of solution A is diluted with pure water to 100.0 mL. What is the absorbance of this diluted solution? I tried but I still don't get it. Can anyone please help! :( Thanks!
April 24, 2010 by hongkong

chemistry
A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0 mL, and 25.00 mL of this solution were then diluted to 1.000 103 mL. The concentration of the final solution is 0.00421 M. Calculate the concentration of the original solution.
October 1, 2012 by Aiden

chemistry
A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0 mL, and 25.00 mL of this solution were then diluted to 1.000 103 mL. The concentration of the final solution is 0.00421 M. Calculate the concentration of the original solution.
October 1, 2012 by Tim

chemistry
15.0 mL of 8.00 M NaOH was diluted with water to 500 mL. Calculate the molarity of the diluted NaOH solution. My calculations: 0.015L x 8.00moles/1L x 39.997/1mole = 4.8g M= (4.8g x 1mole/39.997) / 0.500L = 0.24M is my workings correct? Is there another way to get to this?
April 22, 2013 by alex

chemistry (Pls Bob check for me)
A 150 mg/dl glucose solution was diluted 1:2. Then 0.5ml of it was added to 4.5ml saline 2 ml of this solution was diluted to 10ml. What is the final concentration of glucose? 1L= 10dl 1dl =100mL Answer 0.015mg/dl
March 16, 2013 by Fai

CHEMISTRY
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 4.0010−2 . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted...
September 28, 2009 by STEVE

Chemistry
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 4.0010−2 . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted...
October 13, 2009 by boston

Chemistry
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 4.0010−2 . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted...
October 13, 2009 by boston

Chemistry!
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.0010−2 M. The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the ...
March 28, 2012 by Gabe

chemistry
a 30.0 ml solution of potassium nitrate was diluted to 125 ml and 25 ml of this solution were then diluted to 150 ml. the concentration of the final solution is 0.00307 M. Calculate the concentration of the original solution.
July 7, 2011 by Carol

chemistry
Aqueous solution with a pH of 10.6 is diluted from 1 L to 1.5 L. What is the pH of the diluted solution?
March 14, 2010 by elizabeth

Lab Math
A stock solution of inulin has a concentration of 500mg/ml. From this stock 0.05ml is diluted with 0.05ml of sterile saline. After 30 min blood is sampled and produces a result of 50ug/ml. What is total extravascular volume? I just need to find what the diluted part is so I ...
September 5, 2012 by Morgan

Chemistry
A: A student must make a five-fold dilution of a 2.15 M HCl solution. If the student wishes to make 75.0 mL of the diluted solution, what volume of the 2.15 M solution will he need to dilute? B: What is the concentration of the diluted substance?
March 21, 2011 by Anonymous

Chemistry
A 16.6 mL portion of an HBr solution of unknown strength is diluted to exactly 247 mL. If 102.1 mL of this diluted solution requires 87.8 mL of 0.37 M NaOH to achieve complete neutralization, what was the strength of the original HBr solution?
May 1, 2011 by Sam

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 ...
May 10, 2007 by jared

Chemistry
250-mL volumetric flask, 125 mL of a 6.0 M hydrochloric acid was added. This was then diluted with more water to reach the 250-mL mark. What is the molarity of the acid at this time? Initial: M1 = 6.0 M hydrochloric acid V1 = 125 mL = 0.125 L Diluted: M2 = ? M hydrochloric ...
February 8, 2008 by Kally

chemistry
Hey, I am having a real hard time getting the answers to the problems. Any help would be greatly aprreciated! 1. When 11 mL of a solution containing 2.9 M AlBr3 is diluted to 33 mL, a dilute solution is formed. What is the Br- concentration in 25 mL of the dilute solution? 2. ...
November 7, 2007 by chelsea

molarity
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 ...
February 16, 2007 by christine

Analytical chemistry
A 25 ml sample of household bleach was diluted to 500 ml in a volumetric flask. An unmeasured excess of potassium iodide was aded to a 20 ml aliquot of the diluted sample; the iodine liberated in the reaction: OCl- + 2I- -> I2 + Cl- + H2O required 34.5 ml of 0.0409 M ...
July 30, 2013 by Gloria

P. Chemistry
A student added solid K2O to a 750.0 mL volumetric flask. The solid was dissolved in water and then the flask filled with water to the mark. This formed 750.0 mL of the initial KOH solution. 20.0 mL of the initial solution was transferred to another flask and diluted to 200.0 ...
February 23, 2010 by Mark

Chem (ques 2)
The analysis of some household cloudy ammonia cleaner involved diluting a 50.0mL sample of the cleaner to a volume of 250.0mL then titrating this diluted solution. The diluted sample was found to have an NH3 (aq) concentration of 0.350 mole per L. What is the percentage by ...
January 27, 2007 by atriletz

chemistry
The pH of saturated Sr(OH)2 (aq) is found to be 13.12. A 10.0 mL sample of saturated Sr(OH)2 (aq) is diluted to 250.0 mL in a volumetric flask. A 10.0 mL sample of the diluted Sr(OH)2 (aq) is transferred to a beaker, and some water is added. The resulting solution requires 26....
March 28, 2010 by anonymous

Chemistry
A. The forensic technician at a crime scene has just prepared a luminol stock solution by adding 13.0 g of luminol into a total volume of 75.0 mL of H2O. -What is the molarity of the stock solution of luminol? B. Before investigating the scene, the technician must dilute the ...
October 12, 2008 by Irvin

Chemistry
Can someone please check to see if I am doing this correctly. Thank you :) Q) Calculate the new molarity of a 35mL sample of 0.450 M CaCl2 solution that is diluted with enough water to make 250 mL of solution. A) 0.450 m CaCl2 x 35mL/250mL = 0.063 mL diluted solution
April 1, 2013 by Kishwa

health sciences
d. You want to determine the amount of Chlorophyll (Molecular Weight: 893.51 g/mol) in a 50 ml marine sample. Before analysis by UV spectroscopy, 5 ml of the solution was diluted to 80 ml with DI water. The diluted sample was analysed using UV spectroscopy and had an ...
April 14, 2012 by rani tabasum

Chem 1
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 15.0g of luminol into a total volume of 75.0 \rm mL of \rm H_2O. What is the molarity of the stock solution of luminol? 1.13M Before investigating the scene, the technician must ...
March 13, 2013 by Chris

chem
a 45.8mL sample of a 5.8 M KNO3 solution is diluted to 1.00L. What volume of the diluted solution contains 15.0g KNO3? how do you do this? moles of solution: 5.8*.0458 moles Grams of solute= moles*molmassKNO3 Volume of 15g= 1000ml*15/gramssoluteabove
April 5, 2007 by kyle

Food Analysis
1.If 0.5l of 5M solution of CU(NO3) is diluted to a volume of 0.80l by adding water, what is the molarity of the resulting diluted solution? 2.How many ml of water will be required to dilute 11ml of 0.45Macid solution to a molarity of 0.1M? 3.Calculate the weight CuSO4.5H2O ...
March 8, 2011 by Sarah

chemistry
200cm^3 of 1.0 mol dm^-3 sulphuric acid,H2SO4 is poured into a 250 cm^3 volumetric flask.Distilled water is then added to make 250 cm^3 of solution. (a)What is the molarity of the diluted acid solution? (b)What is the volume of 1.6 mol dm^-3 sodium hydroxide,NaOH solution ...
May 7, 2014 by mandy

Science
A 5.0ml aliquot of a sample was transferred to a 25.0ml flask and acidified by addition of 2.5ml of 0.1M HClO4 and diluted to mark. 1.0ml of that solution was mixed with 5.0ml of 1 X 10-4M AYR(Aluminum)dye and 15.0ml ethanol in a 25.0ml flask and diluted to mark. What is the ...
September 2, 2010 by Eileen

chemistry
The pH of saturated is found to be 13.12. A 15.0mL sample of saturated Sr(OH)2 is diluted to 250.0mL in a volumetric flask. A 15.0 mL sample of the diluted Sr(OH)2 is transferred to a beaker, and some water is added. The resulting solution requires 27.6mL of a HCl solution for...
April 11, 2011 by chips ahoy

chem
The pH of saturated Sr(OH)2 is found to be 13.12. A 15.0ml sample of saturated Sr(OH)2 is diluted to 250.0ml in a volumetric flask. A 15.0ml sample of the diluted Sr(OH)2 is transferred to a beaker, and some water is added. The resulting solution requires 29.3ml of a HCl ...
April 2, 2009 by tomi

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

Physical Chem
A student added solid K2O to a 750.0 mL volumetric flask. The solid was dissolved in water and then the flask filled with water to the mark. This formed 750.0 mL of the initial KOH solution. 20.0 mL of the initial solution was transferred to another flask and diluted to 200.0 ...
May 27, 2010 by Sara

chemistry (Pls Bob check for me)
A 150mg/dl glucose solution was diluted 1:2. Then 0.5ml of it was added to 4.5ml saline. 2ml of this solution was diluted to 10ml. What is the final concentration of glucose? 1L = 10dL 1dL = 100mL My own calculation 150mg/dL = 150mg/100ml =1.5 150mg/100ml x 1/2 x 1/10 x 1/5 1....
March 16, 2013 by Fai

Determination of ASA Content of Tablets Lab Report
Not asking for answers necesarily but I would to know how to approach each question Mass of pure acetylsalicylic acid (ASA) : .508 g Dilution Absorbance (a.u.) 2:11 .116 4:11 .259 6:11 .392 8:11 .502 10:11 .548 Mass of tablet : .380 g Absorbance read on the Spec 20 : .314 a.u...
December 5, 2012 by Lena

analytical chemistry
Suppose a 4.272 g soil sample undergoes an extraction with 50 ml of extracting solvent to remove the lead. This 50 ml was then diluted to 250 ml and tested by atomic absorption technique. The concentration of lead in this diluted extract was found to be 35.7 ppm. What is the ...
March 5, 2014 by Lori

Chemistry
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is so sensitive that it can detect blood that has been diluted 10,000 times. A basic solution...
February 11, 2009 by Danielle

Chemistry
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is so sensitive that it can detect blood that has been diluted 10,000 times. A basic solution...
February 11, 2009 by Danielle

Biochemistry
BSA stock solution A has a concentration of 3.50 mg/mL. 1.00mL of stock solution A is diluted to a final volume of 5.00mL to prepare solution B. 1.00mL of stock solution B is diluted to a final volume of 5.00mL to prepare solution C. 1.00mL of stock solution C is diluted to a ...
November 18, 2013 by S

Chemistry
Sorry about that The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is so sensitive that it can detect blood that has been diluted 10,000 times...
February 11, 2009 by HELP PLEASEEE

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