Wednesday
April 16, 2014

Search: describe how you would prepare 500ml of 0.2m (NaOH) solution from 150ml of 4.0M stock solution of (NaOH). Calculate the dilution factor

Number of results: 113,477

Chemistry
describe how you would prepare 500.0 ml of 0.400M NaCl solution, starting from solid NaCl
Sunday, March 2, 2014 at 6:50pm by Anonymous

Chemistry
Can someone please explain this problem step by step. How would you prepare 1000.0ml of 0.600M NaOH solution starting from concentration of 1.000M
Tuesday, October 23, 2012 at 6:22pm by Tasha

Chemistry
A laboratory technician is required to prepare a quarter normal saline solution (0.22% w/v) from the stock normal saline solution. 1. What is the dilution factor required? I have 4-fold dilution - is that correct? 2. Ise this dilution factor to calculate the volume of stock ...
Tuesday, December 14, 2010 at 7:55pm by Korina

chemistry
you are diluting it .2/.05=4 times. You need one part the original stock solution, and three parts water. so, four parts of 500ml gives each part as 125ml.
Friday, February 25, 2011 at 1:38pm by bobpursley

Organic chemistry
Is m-nitroaniline soluble in water, 1.0M NaOH, 1.0M HCl?
Sunday, January 24, 2010 at 10:41pm by Kevin

science:Chemistry
Find the pH of a solution obtained by mixing 100cm3 of 01MHCl solution with 100cm3 of 0.2M NaOH
Thursday, January 31, 2013 at 5:26pm by Anonymous

CHEMISTRY
HOW YOU PREPARE 30.0ML OF 0.800M HNO3 FROM A STOCK SOLUTION OF 4.OOM HNO3? WHAT SOLUTION IN ML OF THE 4.OOM HNO3 SOLUTION WILL YOU NEED?
Sunday, April 10, 2011 at 9:00pm by SARAH

CheMistry
A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil. After cooling to room temperature, the solution was poured into a 250-mL volumetric flask and diluted to the mark with DI ...
Sunday, April 18, 2010 at 11:05pm by ChEm

chemistry pls help
If 10.0 mL of 1.0M HCl is added to 90 mL water, what is he concentration of the new solution? What is the pH of this solution? If the solution is titrated by 0.500M Ca(OH)2, how much volume (ml) of NaOH necessary? Need help pls.
Saturday, December 8, 2012 at 12:37am by Emmy

Chemistry
Is 20.0 mL of 1.0M CH3COOH and 10.0mL of 1.0 M NaOH a buffer solution of 3?
Tuesday, May 4, 2010 at 8:21pm by Anne

Organic chemistry
is benzoic acid soluble in water, 1.0M NaOH, 1.0M HCl?
Sunday, January 24, 2010 at 10:40pm by Kevin

Chemistry
How do you prepare 2% Cu S04? How does this solution differ from 2M CuS04? I am stumped. Thank you. Deb
Monday, April 30, 2012 at 8:42pm by Debbie

chem 1
a NaOh solution has a concentration of about 0.11M.How many grams of KHP would have to be used to require NaOH solution to reach the endpoint
Monday, November 7, 2011 at 10:07pm by karen

Chemistry
How many moles of NaOH per liter of solution would you expect to have in a solution that is labeled "0.105 M NaOH" on the side of the gradulated cylinder?
Thursday, March 15, 2012 at 4:43pm by Carla

chemistry
If you made up a solution of NaOH by adding 0.010 mole of solid NaOH to 1.0 liter of distilled water, what would be the pH of the solution?
Tuesday, December 18, 2012 at 3:15pm by Monica

Science
How much sodium hydroxide, at what concentration, do I need to add to 500 mL of 0.1 N HCL to obtain pH 6.8. How do you calculate this? pH = -log(H^+) M HCl = N HCl mols = M x L. After you know mols HCl you have, then make a solution of NaOH and calculate how much of that must ...
Monday, February 5, 2007 at 4:25pm by Ruby

chemistry
PLEASE SHOW PROCEDURE! You wish to prepare an aqueous solution that has a freezing point of -0.100 degrees Celsius. How many milliliters of 12.0 M HCl would you use to prepare 250.0 mL of such a solution? [Hint: Note that in a dilute aqueous solution, molality and molarity are...
Thursday, July 12, 2012 at 7:01pm by Cody

Chemistry
You have a vinegar solution you believe to be 0.8 M. You are going to titrate 21.39 mL of it with a NaOH solution that you know to be 0.774 M. At what volume of added NaOH solution would you expect to see an end point? Answer in units of mL
Tuesday, March 11, 2014 at 9:07pm by Sara

Chemistry
3. How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration? The CO2 in the distilled water will create a more acidic solution which will affct the determination of NaOH solution's concentration? How is the term ...
Tuesday, March 11, 2014 at 10:59pm by Sandy

chemistry help
Describe how you would prepare 250.0 mL of a 0.500 M solution of NaCl by using apparatus found in a chemistry lab.
Wednesday, May 20, 2009 at 10:27pm by kim

Chemistry
describe how you would prepare 250.0 mL of a .500 M solution of NaCl by using apparatus found in a chemistry lab.
Wednesday, May 30, 2012 at 9:41pm by Noemi

Science
Describe and show your calculations on how you would prepare 1.00L of a 0.50M solution of each of the following a.) HCl from "concentrated" (12M) reagent. b.) Sodium Carbonate from the pure solid
Saturday, December 29, 2012 at 9:15pm by Ashok

chemistry
Describe and show your calculations on how you would prepare 1.00L of a 0.50M solution of each of the following a.) HCl from "concentrated" (12M) reagent. b.) Sodium Carbonate from the pure solid
Sunday, January 6, 2013 at 12:12am by Ashok

Chemistry
Describe and show your calculations on how you would prepare 1.00L of a 0.50M solution of each of the following a.) HCl from "concentrated" (12M) reagent. b.) Sodium Carbonate from the pure solid
Sunday, January 6, 2013 at 12:13am by Ashok

Chemistry
Describe and show your calculations on how you would prepare 1.00L of a 0.50M solution of each of the following a.) HCl from "concentrated" (12M) reagent. b.) Sodium Carbonate from the pure solid
Sunday, January 6, 2013 at 12:13am by Ashok

Biology
the idea is to take out the exact volume from the stock solution and dilute it with water to make up 10mL total volume giving the concentration needed. before commencing, ensure that you transfer sufficient volume of the stock solution into a 100mL beaker to use. Method 1: If ...
Wednesday, June 5, 2013 at 5:36pm by bonjo

Math
A pharmacist is to prepare a 50 fluid ounce solution that contains 54% glucose. The pharmacy has a 30% solution and a 90% solution on hand. How many ounces of each solution should be mixed to prepare the desired perscription?
Friday, February 26, 2010 at 4:47pm by Madison

science-chem
first, thanks so much Bob for helping me!!!! Q4.you will be asked to prepare 25.0 mL of a 0.019 M solution of sodium chloride during this experiment.... a.calculate mass of sodium chloride needed to prepare solution. (0.25L)(0.019M NaCl/L)*(58.5g NaCl/1mole NaCl)=0.278 g NaCl...
Thursday, September 17, 2009 at 5:24pm by Ally

Chemistry
How can i prepare a solution of 12 g 50% (w/v) NaOH?
Friday, June 17, 2011 at 8:07am by PAnos

Chemistry Lab
You are given 350 mL a stock solution of 1.66E-02 M benzoic acid, MW = 122.125 g/mol. Answer the following questions. A. What is the number of moles present in the original stock solution? B. You need to dilute the benzoic acid stock solution to 1.24E-03 M. If you need 455 mL ...
Tuesday, January 11, 2011 at 11:50pm by Natasha

Chemistry Lab
You are given 350 mL a stock solution of 1.66E-02 M benzoic acid, MW = 122.125 g/mol. Answer the following questions. A. What is the number of moles present in the original stock solution? B. You need to dilute the benzoic acid stock solution to 1.24E-03 M. If you need 455 mL ...
Tuesday, January 11, 2011 at 11:50pm by Natasha

chemistry
Please help. Concentrated hydrochloric acid is a 38% w/w solution of HCL in water and has a density of 1.18g/ml. How many millilitres of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 w/v HCL solution? My answer is 2.12ml. I'm not sure if its correct. ...
Monday, May 7, 2012 at 12:47pm by Peter

science
Please help. Concentrated hydrochloric acid is a 38% w/w solution of HCL in water and has a density of 1.18g/ml. How many millilitres of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 w/v HCL solution? My answer is 2.12ml. I'm not sure if its correct. ...
Wednesday, May 9, 2012 at 4:02pm by Peter

Chemistry
how to prepare 100cm3 of 1.0moldm3 copper sulphate and from this prepare 100cm3 of 0.1 moldm3 solution.similarly use the 0.1moldm3 to prepare a 0.05 moldm3 ,and the 0.05moldm3 solution to prepare 0.01 moldm3 and 0.001moldm3solution.
Sunday, December 9, 2012 at 12:37pm by Anonymous

Chemistry
I'm a little confused by the problem. HOW MUCH 2.0M HF and HOW MUCH 1.0M KOH? For example I could take 1L of 2.0 M HF and mix with 2L of 1.0M KOH and I would have only KF at the equivalence point.l But if I take a larger amount of KOH the solution will have an excess of KOH ...
Tuesday, July 16, 2013 at 3:57pm by DrBob222

Chemistry
You have 20mL of a solution of concentration 0.015mg/mL of x in test tube #1. Prepare serial dilutions of your stock solution, and calculated the concentration of x as follows: Add 10mL of distilled water and 10mL of stock solution from test tube 1 to test tube 2. Add 10mL of ...
Wednesday, November 3, 2010 at 3:36pm by Jon

Pharmacy math
concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 hcl solution? Who helps me to solve it for me. I think 2.12 ml is not right.
Tuesday, July 24, 2012 at 12:27am by Fai

Chemistry (repost)
Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution? 1)NaCN and NaOH 2) HCl and NaOH 3) HCN and NaOH 4)HCl and NaCN 5) NaCN and HCN is the answer 1 and 5?? chem - DrBob222, Sunday, April 10, 2011 at 1:28am...
Sunday, April 10, 2011 at 4:16pm by Rachel

Chemistry
You have 475 mL of an 0.47 M acetic acid solution. What volume (V) of 1.10 M NaOH solution must you add in order to prepare an acetate buffer of pH = 5.00?
Saturday, January 19, 2013 at 11:52pm by Mark

General Chemistry I
Determine the mass of Co(NO3)2 X 6H2O to prepare 250mL of a .50M stock solution.
Monday, February 28, 2011 at 5:25pm by Toni

chemistry
Determine the mass of Co(NO3)26 H2O to prepare 250 mL of a 0.50 M stock solution.
Wednesday, March 28, 2012 at 2:35pm by Cortney

UCI
A student is given a stock solution of 1.54E-04 M. How much stock solution is needed to make 100 mL of a 1.60E-05 M solution?
Friday, April 9, 2010 at 12:17am by Anonymous

Chemistry
I'm trying to find the solubility of Ca(OH)2 in .0125 mol/L aqueous NaOH. Here is my data: Vol of solution used per titration: 20mL Conc of HCl: .1201 mol/L Average Titre: 4.71 I need to calculte: 1. the TOTAL [OH-] in the saturated solution of Ca(OH)2 in NaOH 2. the [OH-] due...
Wednesday, April 14, 2010 at 1:49pm by Kristin

physics
distance at steady speed: 1.0m/s*1.2s=1.2m stopping distance=3.4-1.2=2.2m Vf^2=Vi^2+2ad solve for a, knowing Vf=0, Vi=1m/s, d=2.2m
Wednesday, September 21, 2011 at 11:25am by bobpursley

Physics
Solve for velocity at 2.0s vx = v0x + axt vx = (-1m/s) + (0.5m/s2)(2.0s) vx = 0m/s vy = v0y + ayt vx = (3m/s) + (-0.9m/s2)(2.0s) vx = 1.2m/s v = 0m/s(x hat) + 1.2m/s(y hat) Calculate displacement. ∆x = v0xt + 1/2axt2 ∆x = (-1m/s)(2.0s) + 1/2(0.5m/s2)(2.0s)2 ∆...
Sunday, October 4, 2009 at 1:57pm by Sandhu

Chemistry
1. WHy is KHC8H4O4 used as the acid in standardization titration? 2. Why should you not shake KHC8H4O4 (Acidic solution) before titrating it with NaOH (Basic solution)? 3. Why is boiled distilled waster used to prepare acidic and basic solutions? Any and all help would be ...
Sunday, February 1, 2009 at 8:18pm by Grade 12

che
1.0M FeCl3(H2O)6 IN 2M HCl + 2.0M FeCl2(H2O)4 WHAT ARE THE MAIN CHEMICAL REACTION...
Wednesday, July 13, 2011 at 7:33am by ra

Chemistry
You have an unlimited amount of 12M HCl stock solution. You need to neutralize 2.00 grams of NaOH by slowly adding 0.100M HCl solution.
Friday, November 25, 2011 at 8:06pm by Shelby

Math
I need help atleast an equation to get started please A lab assisstant wants to make five liters of 27.8% acid solution. If solutions of 50% and 13% are in stock, how many liters of each must be mixed to prepare the solution.
Saturday, May 12, 2012 at 12:32am by Janine

chemistry
What volume of a 2.5 M stock solution of acetic acid (HC2H3O2) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution?
Tuesday, June 19, 2012 at 9:49am by nhfgchnr

chemistry
What volume of a 2.5 M stock solution of acetic acid (HC2H3O2) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution?
Friday, September 6, 2013 at 9:07am by delacia

chemistry
What volume of a 2.5 M stock solution of acetic acid (HC2H3O2) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution?
Thursday, September 12, 2013 at 9:01am by delacia

Chemistry
How many milliliters of a 2000.0 mg/dl stock solution are needed to prepare 100.0 ml of a 150.0 mg/dl working solution?
Tuesday, April 14, 2009 at 8:14pm by Jessi

Chemistry
How many milliliters of a 2000.0 mg/dl stock solution are needed to prepare 100.0 ml of a 150.0 mg/dl working solution?
Tuesday, April 14, 2009 at 10:16pm by Jessi

chem
What volume of a 2.5 M stock solution of acetic acid (HCHO) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution?
Thursday, May 10, 2012 at 4:59pm by pat

chemistry
Titration was used to determine the molarity of acetic acid in vinegar. A primary standard solution of KHP was used to standardize the NaOH. 1. When performing this experiment, impure KHP was used to standardize the NaOH solution. If the impurity is neither acidic or basic, ...
Tuesday, March 11, 2014 at 2:25am by Sandy

Chm General 2
if a student doing an experiment failed to dry the KHP before using it to standarize the NaOH solution. A) Would her calculated molarity of the NaOH solution probably be too hight or too Low?
Wednesday, March 23, 2011 at 10:21pm by Karla

chemistry
If it requires 30.0 milliliters of 1.2 molar HCl to neutralize 20.0 milliliters of NaOH, what is the concentration of the NaOH solution? Balanced equation: NaOH + HCl NaCl + H2O 0.60 M NaOH 0.80 M NaOH 1.3 M NaOH 1.8 M NaOH
Wednesday, June 22, 2011 at 12:14pm by Magan

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 ...
Sunday, October 12, 2008 at 11:00am by Irvin

chem
Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution? (Select all that apply.) NaCN and HCN NaCN and NaOH HCN and NaOH HCl and NaCN HCl and NaOH I thought it was the middle three because each either has a ...
Sunday, April 10, 2011 at 7:19pm by Rebekah

Chemistry
I'm not sure what you are to calculate; perhaps it is delta H/mol or gram. Also, you don't specify the kind of calorimeter you are using. You might be using a styrofoam cup one or a real calorimeter. How did you weigh the material(s)? Would a better balance have helped? Did ...
Wednesday, October 24, 2007 at 12:35pm by DrBob222

Chemistry
What volume of 6.0m H2SO4 is needed to prepare 0.5L of a 0.3M H2SO4 solution?
Tuesday, May 29, 2012 at 11:15am by Janeth

Chemistry
how much CuSO4.5H2O is required to prepare 100 ml of a .050M aqueous stock solution?
Monday, March 15, 2010 at 3:26pm by jen

Chemistry
How to prepare 1000 nM stock solution using Tam (1 gm) Mol Weight=563.6
Tuesday, March 29, 2011 at 8:35am by Boobla

Chemistry
How to prepare 1000 nM stock solution using Tam (1 gm) Mol Weight=563.6
Monday, March 28, 2011 at 9:36pm by Boobla

Chemistry
NaOH + HCl ==> NaCl + H2O You want pH = 12.55 which means the solution will be quite basic so all of the NaOH has not been neutralized. 14-12.55 = pOH = 1.45 and (OH^-) = -log(OH^-) so (OH^-) = 0.0355M. If we let x = mL 0.2M HCl added, then mmols OH^- remaining in the ...
Friday, November 22, 2013 at 6:04am by DrBob222

chemistry
How many mL of a 0.90% (m/v) NaCl stock solution will you need to to prepare 250 mL of a 0.225% m/v NaCl solution?
Sunday, December 5, 2010 at 8:04pm by nate

math help
A lab assistant wants to make FIVE LITERS of 31.2% acid solution. If solutions of 40% and 18% are in stock, how many liters of each must be mixed to prepare the solution. i dont even know what equation to use or anything, please help me, thank you.
Thursday, March 29, 2012 at 10:05am by amy

chemistry
A chemist makes a stock solution of KOH by dissolving 1050.0 grams in enough water to make 1.50 liters of solution. If later on the chemist wants to use this stock solution to make 200.0 mL of 0.10 M KOH, what would the chemist need to do? (Define the steps and show the ...
Friday, May 25, 2012 at 1:30pm by Jim

chemistry
how will u prepare 500g of aqueos solution which is 10% NaOH by mass?(%W/W)
Friday, March 4, 2011 at 7:39pm by yui

Chemistry
How many grams of NaOh are needed to prepare 0.5l of a 4m solution?
Monday, June 10, 2013 at 1:02am by Keymaurie

chemistry
if the pH of a half-neutralized acid solution is 5.4, how would you find the [H+] of the the solution. There is 1.0 g of L-ascorbic acid which was dissolved in 100 ml of water. That solution was split in two and 50 ml of the solution was titrated with 0.2 M NaOH (13 ml NaOH). ...
Thursday, April 17, 2008 at 3:04pm by tom

analytical chemistry
mL used = 25.01-12.38 = 12.63 mL of 0.0252M HCl. mols HCl = 0.0252 x 0.01238 = about 0.00031 (but you need to be more careful with these numbers) You titrated 50 mL of the diluted NaOH; therefore, the M of the titrated solution is 0.00031/0.050L = about 0.0062M That solution ...
Thursday, February 21, 2013 at 2:16pm by DrBob222

College Chemistry
1) A 25mL sample of the .265M HCI solution from the previous question is titrated with a solution of NaOH. 28.25mL of the NaOH solution is required to titrate the HCl. Calculate the molarity of the NaOH solution. 2) A 1.12g sample of an unknown monoprotic acid is titrated with...
Monday, October 25, 2010 at 2:29pm by Jessica

AP Chemistry
HCl + NaOH ==> NaCl + H2O mols HCl = M x L = ? mols NaOH = mols HCl M NaOH = mols NaOH/L NaOH I believe that works out to be about 4.2M but check my work.
Wednesday, September 11, 2013 at 6:18pm by DrBob222

chemistry
How many moles do you need? That is M x L = 3.0M x 0.250 L= ?? Now M NaOH = moles NaOH/L NaOH and solve for L NaOH, then convert to mL. An easier way is to use the dilution formula c1v1 = c2v2 6*x = 3.0*250 solve for x
Thursday, January 5, 2012 at 2:29pm by DrBob222

Chemistry- Dr Bob please help
Thanks Dr Bob,the purpose of this experiment is to test for the clarity of my sodium hydroxide sample. I intend to boil deionized water to get CO2 free water, cool the water and add it to a 100mL volumetric flask containing 10g of solid NaOH. Would that be alright? Also, can ...
Saturday, September 18, 2010 at 8:27pm by anne

Chemistry!!!!!! Please help immediately!!!
Please show me step by step. Thank you. One commercial method used to peel potatoes is to soak them in a solution of NaOH for a short time, remove them from the NaOH, and spray off the peel. The concentration of NaOH is normally in the range of 3 to 6 M. The NaOH is analyzed ...
Sunday, March 24, 2013 at 6:21pm by Lilyyyyyyyyyyyy!!!!

Chemistry-Is this correct?
The concentration of NaOH is normally in the range of 3-6 M when they peel potatoes and soak them in a solution of NaOH , remove them and spray them off. If I have 45.7 mL of 0.500M of H2SO4 required to react completely with a 20.0 mL sample of NaOh. What is the molar ...
Thursday, May 20, 2010 at 4:20pm by Sara

math
Describe and correct the error made in solving the literal equation at the right for n. 2m = -6n + 3. 2m + 3 = -6n. 2m + 3/-6 = n
Wednesday, September 11, 2013 at 6:56pm by tessa

chemistry
assume one liter of stock. mass stock= 1190g mass HCL= 1138*.38=432g moles HCL= 432/37=11.7 Molarity=1.17/1=1.17 so you want to dilute it 11.7/.5=23.4times so you need one part stock, 22.4 parts water. each part= 500ml/23.4=21.4ml 21.4ml stock 479 ml H2O check me.
Sunday, May 30, 2010 at 3:15pm by bobpursley

science
HCl you need? HCl is a liquid, what is your stock solution concentration? Assuming the stock solution is 12M, then you need to dilute it 4 times, or three parts water, one part stock solution. one part of 50ml is 12.5ml HCl stock solution, then 3 parts (37.5ml) water. Add the ...
Tuesday, March 8, 2011 at 6:18am by bobpursley

chemistry
describe how you would prepare 500 mL 0.250 M ethylene glycol (MW=62.07) from concentrated 31% (w/w) solution that has a density of 1.0350 g/mL
Tuesday, January 29, 2013 at 5:56am by jessica

chemistry
describe how you would prepare 500 mL 0.250 M ethylene glycol (MW=62.07) from concentrated 31% (w/w) solution that has a density of 1.0350 g/mL
Tuesday, January 29, 2013 at 7:13am by jessica

Chemistry
I am having trouble with how to approach this problem. I have the solution but can't figure out how to get it. How many moles of NaOH must be added to 1.0 L of 2.0M HC2H3O2 to produce a solution buffered at each pH? a) pH=pKa b)pH=4 c)ph=5
Monday, April 12, 2010 at 6:42pm by Larry

chemistry
I am having trouble with how to approach this problem. I have the solution but can't figure out how to get it. How many moles of NaOH must be added to 1.0 L of 2.0M HC2H3O2 to produce a solution buffered at each pH? a) pH=pKa b)pH=4 c)ph=5
Monday, April 12, 2010 at 9:18pm by heather

chemistry
How many moles of solute are contained in a 150ml solution of a 0.25 M NaNO3 solution?
Thursday, November 4, 2010 at 11:10pm by Ed

chemistry
Calculate the amount of NaOH in this solution 5.00mL of 12.0 NaOH is diluted with water to make 24 mL of 2.50 NaOH solution
Tuesday, April 24, 2012 at 12:36pm by crystal

statistics
If more women than men, possibilities are 6W, 0M 5W, 1M 4W, 2M 3W, 3M --- no longer possible 6W,0M ---> C(20,6) x C(8,0) = 38760 5W, 1M ---> C(20,5) x (8,1) = 15504(8) = 124032 4W, 2M ---> C(20,4) x C(8,2) = 4845(28) = 135660 add them up
Monday, November 8, 2010 at 9:52pm by Reiny

Chemistry
500.0mL of 0.220 mol/L HCl(aq) was added to a high quality insulated calorimeter containing 500.0mL of 0.200mol/L NaOH(aq).Both solutions had a density of 1.000g/mL & a specific heat of 4.184 J/g.K. The calorimeter had a heat capacity of 850.0 J/degree C. The temperature of ...
Friday, March 23, 2012 at 8:33am by Meenaakshi

Chemistry(Please respond, thank you)
oh ok I have to include in my answer if the process is exo or endothermic but I am not sure how I am suppose to know that. We then had to add 1 drop of 1.0M NaOh to a new test tube with 2.5mL of Na2CrO4 in it. I guess the color change was suppose to be orange even though my ...
Tuesday, March 20, 2012 at 5:36pm by Hannah

High School Chemistry
10mL of 0.10M HCl is given. What is the pH? How many milliliters of 0.10M NaOH would be required to neutralize it? What is the pH of the neutralized solution? What would the pH of the solution be if you added 20mL of NaOH? Here's what I have so far: pH of HCl=-log(0.10M)= 1 ...
Monday, March 21, 2011 at 12:58am by Becky

chemistry
how many grams of solid NaOH are required to prepare 200 ml of a .05 M solution?
Thursday, February 5, 2009 at 10:17pm by ash

chemistry
how many grams of solid NaOH are required to prepare 200.0 mL of a .050 M solution?
Tuesday, September 1, 2009 at 10:37pm by mariah

chemistry
What is the mass of naoh needed to prepare a 0.365m solution dissolved in 1525ml of water
Saturday, May 19, 2012 at 11:02am by warren

Chemistry
You weigh out 196.07mg ferrous ammounium sulfate (FW 392.14) to prepare 250mL of solution which is 0.002M with respect to that compound. The salt is quantitatively transferred into a 250mL volumetric flask and 8mL of 3M H2SO4 is added and then diluted to the mark (call this ...
Wednesday, December 7, 2011 at 2:45am by Ken

Chem
How would we make 500mL of a 1.5 percent w/v solution of KC1 in water?
Thursday, October 11, 2012 at 4:42pm by Stacy

Chem
How would we make 500mL of a 1.5 percent w/v solution of KC1 in water?
Thursday, October 11, 2012 at 5:04pm by Stacy

Chemistry
How would we make 500mL of a 1.5 percent w/v solution of KCl in water?
Friday, October 12, 2012 at 3:16pm by Stacy

science
Describe and show your calculations on how you would prepare 1.00L of a 0.50M solution of each of the following a.) HCl from "concentrated" (12M) reagent. b.) Sodium Carbonate from the pure solid PLEASE SO LOST(explanation of why you did of what woulp help so much) Thank You
Tuesday, January 1, 2013 at 9:03pm by Ashok

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