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March 29, 2015

Search: prepare 250.0mL of a 0.500M solution of NaCl

Number of results: 23,877

Chemistry
Find the pH of a solution prepared by taking a 50.0 mL aliquot of a solution prepared by dissolving 12.25g of NaOH and 250.0 mL of water and diluting that aliquot to 1.00L?
January 20, 2011 by Audrey

high school chem
How many grams of a stock solution that is 92.5 percent h2s04 by mass would be needed to make 250 grams of a 35% by mass solution?
March 9, 2011 by Kayla

Chemistry
How many milliliters of a 3.85 M solution of Fe2+ are needed to titrate 250.0 mL of a 0.125 M Cro4 2- solution? H + CrO4 2- + Fe2+ yields to Fe3+ + Cr2O3 + H2) (not balanced)
November 23, 2011 by Jane

Physical Science
24. What happens when a solution of nitric acid (HNO3) is added to a solution of potassium hydroxide (KOH)? What are the products? 25. Which of the following compounds can react with H2SO4 to form a salt: NaCl, Ca(OH)2, HF, AlCl3, H2O, Mg(OH)2? Name the salt(s) that would form...
October 15, 2013 by Alexandra

Chemistry
If the same solute is dissolved in two different solvents to the same concentration and the same temperature, the osmotic pressure ____ My answer & reason: solution A has a smaller molecular weight and therefore, a larger Molarity and higher osmotic pressure (pi=iMRT) ...
February 25, 2009 by Anonymous

chemistry
how do i do this \? a 4.0mg/dl standard solution is needed. To prepare 100ml of the working standard. How much stock standard of a 1mg/ml (100mg/dl) solution is needed. i dont understand this conceptually / thanks
January 21, 2010 by Dan_9

College Chemistry
Calculate the pH of a solution prepared by mixing 250.mL of 0.174 molal aqueous HF (density=1.10g/mL) with 38.7g of an aqueous solution that is 1.50% NaOH by mass (density= 1.02g/mL).
March 23, 2011 by Anonymous

Chemistry
What is the concentration in mol/L of a CuSO4 solution containg 1.0 mole of CuSO4 in 250 mL of Solution? I would like to know how to calculate the answer and be giving the correct answer please.
November 19, 2012 by Hannah

College Gen. Chemistry - Science
You have 120.0 mL of a 0.245 M solution of NaCl in an open beaker. After several days, you test the solution and find that it now has a concentration of 0.348 M. How much water must have evaporated from the beaker given the new concentration?
March 25, 2014 by Anonymous

chemistry
Benzoic Acid (HC6H5OO, 122.0 g/mol) has a Ka = 6.3 x 10-5. What is the pH of a solution that has 3.050 g of benzoic acid in enough water to make a 0.250 L solution?
March 31, 2012 by Anonymous

analytical chemistry
A solution containing 0.40 M B (a weak base) and 0.20 M BH+ (the salt of the weak base) has a pH = 10.30. What is the pH after 25 mmol of HCl is added to 250 mL of this solution?
May 22, 2014 by axy

chemistry
if 5.105 gm of KHP (Mwt=204.2)was dissolved in 250 ml,10.70 ml of this solution of KHP was titrated with 10.0 ml of NaOH . Calculate the concentration of NaOH solution
September 24, 2014 by bibi

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 2
In a study designed to prepare new gasoline resistant coatings, a polymer chemist dissolves 6.053g of poly in enough water to make 100.0 mL of solution. At 25C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer sample?
March 26, 2010 by Mike

chemm
When a reaction mixture with a total volume of 1180 mL that is 0.0110 M aqueous NaCl was stoichiometrically produced as per the balanced equation, what volume (mL) of 0.0116 M aqueous Ca2+ was required? 3 CaCl2(aq) + 2 Na3PO4(aq) → Ca3(PO4)2(s) + 6 NaCl(aq) Molar Mass (g...
December 7, 2010 by ann

Cost Accounting
PLEASE, PLEASE, can you give me the step to calculate these: 1.Prepare the beginning inventory for the first quarter 2.Prepare the budgeted beginning inventory for the second - fourth quarters 3.Prepare the budgeted production for each quarter 4.Prepare the budgeted production...
November 5, 2009 by Jessi

college chemistry
for my lab i used 2.0mL of NaOH solution and it doesnt have a density in (g/mL)... is there still a way to calculate the moles to it? unless there is a density to NaOH
March 19, 2013 by Anonymous

chemistry
Pb(NO3)2 6.0mL 0.5 mol NaI 12.0mL 0.5 mol What is the mole ratio between Pb(NO3)2 and NaI?
March 10, 2010 by BT

Chemistry
What would the osmotic pressure be for an aqueous solution that contained the following, .4 M NaCl, .3 M glucose and .2 M CaCl2? Assume temp is 25 C.
January 16, 2008 by Anonymous

Chemistry
What can you conclude about the relationship between colligative properties and the type of ions in solution from the 1.0m HCl(aq) and 1.0m NaCl(aq) solutions?
February 16, 2010 by Laverne

chemistry
what volume of physiological saline solution (0.90% by weight NaCl, in water) would give you a gram of salt when evaporated?
January 18, 2011 by jemmie

Chemistry
I would like to have 1 mole of Cl- ions in 500ml of water, how many grams of NaCl do I weigh out for this solution?
January 22, 2011 by Lindsey

chem
is a solution containing 35g of NaCl per 100g of water at 25 degrees Celsius, saturated, unsaturated, or supersaturated
March 1, 2012 by nakisha

sliva
a solution is made by dissolving 3.95g of NaCl in 78.2 mL what is the concentration of sodium chloride in units of weight/volume percent
April 16, 2012 by amber

science
a solution of sodium chloride in water has a vapor pressure of 19.5 at 25C what is the mole fraction of NaCl solute particles
September 17, 2012 by morgan

chemistry
What is the mass of dry NaCl sample should be taken for 100 cm3 of 0.5 mol/dm3 aqueous solution?
November 15, 2012 by michelle

chemistry
†Which 0.10M solution below has the lowest pH? a) NaCl † † † † †b) KCN † † † † †c) LiF † † † † †d) †RbClO † † e) †all have the same pH​
March 26, 2013 by Anonymous

ecc
Describe how you would make up3.2 g of a 5.00% aqueous solution of NaCl(i.e. find masses of the components that need to be mixed).
April 15, 2013 by george

ecc
Describe how you would make up3.2 g of a 5.00% aqueous solution of NaCl(i.e. find masses of the components that need to be mixed).
April 15, 2013 by george

ecc
Describe how you would make up3.2 g of a 5.00% aqueous solution of NaCl(i.e. find masses of the components that need to be mixed).
April 15, 2013 by george

college princ. of accounting II
Prepare the adjusting entries at March 31, assuming that adjusting entries are made quarterly. (Round all answers to 0 decimal places.) The equipment depreciates at $250 per month.
January 19, 2009 by Britni

Chemistry: Molarity
4.82 mL of a 0.262 M NaOH solution reacts completly with 4.79 mL of HCl solution according to the balanced chemical reaction shown below: HCl (aq) + NaOH (aq) -> NaCl*aq) + H2O (I) What is the molarity of the HCl solution? 4.82 x (1L/1000 mL) = .00482L 4.79 x (1L/1000 mL...
March 1, 2009 by Bob

math
Please show all of your work in the space below. Please present and organized and complete solution. A garden will be made up of a parallelogram, a rectangle and a triangle. The garden must have an area of 500m square. Draw two possible gardens. Determine the dimensions of ...
November 22, 2013 by jhon

Chemistry
You are a lab technician and must create 250 ml of a 17% salt solution. You have available three stock solutions. You have a one liter container of a 5% salt, a 500 ml container of a 28% salt solution, and a 400 ml container of a 40% salt solution. Discuss and explain the ...
March 5, 2012 by Fatih

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

chemistry
describe how to prepare a .50 m solution of lead nitrate using only 100.00 mls of water. aslo discribe how to prepare a .50m sloution of sodium iodide using only 100.00 mls of water. explain the differences that exist between these two solutions. OK i have answers for both 1....
February 15, 2012 by kate

chemistry
A 10.0 mL sample of 3.00 M KOH(aq) is transferred to a 250.0 ml volumetric flask and diluted to the mark. It was found that 38.5 ml of this diluted solution was needed to react the stoichimetric point in a titration of 10.0 mL of a phosphoric acid, H3PO4, solution. The ...
June 20, 2009 by dan

Chemistry
Letís assume you have 250 ml of a 1.3M KOH solution and you want to neutralize it with the acid HBr. It takes 350 ml of the HBr solution to do so. What must have been the molarity of the HBr solution? HBr(aq) + KOH(aq) => KBr(aq) + H2O(l) The stoichiometry is already ...
November 29, 2014 by Chris

Chemistry
Please read to the bottom - This help was wonderful and absolutely correct, I'm asking a bit more regarding the same question, please read below. Imagine that you have been asked to prepare 500ml of a 0.25 mol L solution of Sodium Hydroxide, NaOH. Describe how you would ...
October 15, 2010 by Dexter

Chemistry 108
Calculate the freezing point and boiling point of a solution containing 14.8g of naphthalene (C10H8) in 120.0mL of benzene. Benzene has a density of 0.877 g/cm3.
June 27, 2014 by Bama

Chemistry
Suppose you are going to add 450 mL of a 0.10 mol/L hydrochloric acid solution to 250 mL of a 0.2 mol/L sodium hydroxide solution. a)Which one is the limiting reactant? b)What is the theoretical yield of sodium chloride?
December 10, 2011 by Maame

chemistry
An experiment in your laboratory requires 500 mL of a .0200 M solution of Na2CO3. You are given solid Na2CO3, distilled water and a 500 mL volumetric flask Describe how to prepare the required solution showing all calculations and describing each step appropriately.
November 15, 2011 by Jennifer

Chemistry
To what volume should you dilute 124mL of an 8.10M CuCl2 solution so that 49.0mL of the diluted solution contains 4.81g CuCl2? Molar Mass of CuCl2= 134.45 g/mol Convert: 4.81g * (1mol/ 13.45g CuCl2)= 0.0358mol CuCl2 [CuCl2]= M= mol/L= (0.0358mol/ 49ml) * (1000mL/1L)= 0.7306M ...
February 21, 2015 by Nyle

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

Chemistry
What weight of NaOH would be required to prepare 3000ml of a 2.5M solution?
April 21, 2009 by Jessi

Chemistry
How many grams of CuSo4 x 5h20 to prepare 100 mL of a .10M solution?
March 29, 2010 by John

chemistry
what you would do to prepare 100.0g of a 3.5% solution of ammonium sulfate in water
May 13, 2010 by Anonymous

chemistry
What mass of KOH is necessary to prepare 799.9 mL of a solution having a pH = 11.53?
November 24, 2010 by AMANDIP

chemistry
What mass of KOH is necessary to prepare 799.9 mL of a solution having a pH = 11.68?
November 28, 2010 by justin

chemistry
how Many grams of copper(11) acetate monohydrate will you ned to prepare 10 mL of a 0.01 M solution?
December 1, 2010 by ken

Chemistry
How much of NaOH (in grams) is needed to prepare 546 mL of solution with a pH of 10.00 ?
February 15, 2011 by Sara

Chemistry
How much of NaOH (in grams) is needed to prepare 546 mL of solution with a pH of 10.00 ?
February 16, 2011 by Sara

chemistry
How many grams of solid KOH are needed to prepare 100.mL of a 1.7 M solution?
February 21, 2011 by Kelli

chemistry
whatmass of (NH4)3SO4 is required to prepare 500cm3 of m/4 solution
March 30, 2011 by kim

chemistry
How many grams of Al(NO3)3 are needed to prepare 25.0 mL of a 0.750 M aqueous solution.
September 21, 2011 by joan

chemistry
how to prepare 1M,50ml buffer solution by taking Na2HPO4 and NaH2PO4.
November 16, 2011 by umesh

Chemistry
What mass of KOH is necessary to prepare 799.2 mL of a solution having a pH = 11.65?
November 23, 2011 by Kaleen

Chemistry
What mass of KH2PO4 is needed to prepare 500.0 mL of a 0.067M solution?
February 9, 2012 by John

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

chemistry
calculate the mass of naso4 needed to prepare of 0.5L of 0.15M of solution
November 14, 2012 by elissa

chemistry
How would you prepare a supersaturated solution of CuSo4 in 100ml of water
November 24, 2012 by Jen

chemistry
How many grams of NH2OH are needed to prepare 250mL of a solution with a pH of 9.56? kb=6.6x10^-9
December 31, 2012 by sabryna

lab
How much 38%Hcl will be used to prepare N/3.05 solution in 2litre water.
January 18, 2013 by abc

Analytical chemisty
How many grams of K2Cr2O7 are required to prepare 500 ml of a 0.13 N solution?
February 2, 2013 by Anonymous

Chemistry
How many grams of CuSO4 * 5H2O are needed to prepare 100mL of a 0.10 M solution ?
April 4, 2013 by Jade

chemistry
the amount of K2Cr2O7 required to prepare 100ml of its 0.05N solution
April 25, 2013 by saba anjum

chem
How would you prepare 100 mL of a 0.01N sulfuric acid solution?
March 7, 2014 by Anonymous

chemistry
what mass of water is necessary to prepare 150.0g of 1.30% saline solution
December 12, 2014 by Anonymous

Chemistry(Please help,thank you)
I have to find the calculation of Van't Hoff factor "i" for NaCl and sucrose. The directions say to use the equation delta Tf = kf X m X i and to use Kf for water = -1.86C/m So I have the molality of NaCl and sucrose as well as delta Tf so for NaCl I plugged the numbers into ...
February 20, 2012 by Hannah

chemistry
When a 28.8mL of .500M H2SO4 is added to 28.8mL of 1.00M KOH in a coffee-cup calorimeter at 23.50 degrees Celsius, teh temperature rises to 30.17 degrees Celsius. Calculate the ^H(change in enthalpy)of this reaction. (assume total volume is the sum of individual volumes and ...
October 12, 2008 by Kelsie

Chemistry
hellppp please i have a test on this on mondayy im so screwed A solid mixture contains MgCl2 and NaCl. When 0.5000 g of this solid is dissolved in enough water to form 1.000 L of solution, the osmotic pressure at 25įC is observed to be 0.4010 atm. What is the mass percent of ...
November 29, 2008 by yvonne

CHEM
A student used 10 mL water instead of 30 mL for extraction of salt from mixture. How may this change the percentage of NaCl extracted? My book says: % NaCl= (grams of NaCl / total grams of mixture) x 100 What I don't get is if it does change the percentage, why? It says the ...
September 4, 2012 by Daisy

Chemistry
how would I find the mass of something from the molality..... How many grams of water should be added to 25.0 g of NaCl to produce a 0.450 m solution?
February 10, 2010 by CC

Chemistry
Calculate the grams of solute required to make the following solutions. a)2500g of saline solution (0.90% NaCl (m/m)) b)0.050kg of 4.0% (m/m) MgCl2
April 27, 2010 by Kim

organic chemistry
What volume of physiological saline solution (90% by weight NaCl, in water) would give you a gram of salt when evaporated?
January 23, 2011 by tina

Biology
What will happen to human red blood cells (crenate, lyse, or no change) if they are placed in the following solutions? 20% NaCl solution
January 28, 2012 by Anna

chemistry
What is the molarity (mol/dm3) of a solution prepared by dilution of 0.125 moles of sodium chloride (NaCl) to 2.50x102 mL with water?
May 5, 2014 by Josh

chemistry
What is the molarity (mol/dm3) of a solution prepared by dilution of 0.125 moles of sodium chloride (NaCl) to 2.50x102 mL with water?
May 5, 2014 by pippiserra

chemistry
A vitamin C tablet containing 250 mg of ascorbic acid (C6H7O6; Ka = 8.0 x 10-5 is dissolved in a 250 mL glass of water. What is the pH of the solution? i tried answering this question multiple times but i still get it wrong.... can someone help? step-by-step please. what i did...
March 20, 2012 by Finding the pH of a weak acid?

Molecular Bio
You are planning to digest human genomic DNA with the EcoRI restriction enzyme but realize you do not have any 10X buffer available to add to the reaction. The components of the 10X buffer are: 50 mM NaCl, 100 mM Tris, 10 mM MgCl2, and 0.025 % TritonX-100. You search around ...
February 13, 2014 by D.

chemistry
1) To prepare a 200 mL of aqueous stock solution X, you transferred 50 mL of a known concentration solution into a 200 mL volumetric flask. If you realize that the volumetric flask was contaminated with water droplets after you cleanly transferred the known concentration ...
January 12, 2009 by Brad

Chemistry
Consider the titrtation of 25.0mL of 0.0100M Sn2+ by 0.0500M TI3+ in 1 M HCL, using Pt and Saturated Calomel Electrodes to find the endpoint. F=96486.7 Cmol E0 Sn4+/Sn2+ =0.15V E0 TI3+/TI+ = 1.28 Esce = 0.241V R=8.3141 J K Mol (D) calculate E at the following volumes of TI3...
January 24, 2015 by Sam

Chemistry
You are asked to prepare a temperature bath that freezes at -25 degrees C, using only water and ammonium sulfate. a. How many grams of ammonium sulfate would you need to prepare this bath if you start with 500 grams of water? b. What would the boiling point (degrees C) of this...
November 14, 2012 by Robin

Chemisty
A 2.5 L volume of sodium hydroxide solution was prepared. The titrant was standarized against primary standard oxalic acid dihydrate, H2C2O4*H2O(molar mass is 126.06) if a 0.4774g sample of the prmiary standard consumed 31.94mL of the base solution in reaching the ...
May 9, 2012 by Brittany

Chemistry
Suppose you have to prepare 1.00 L of the solution ( KH2PO4 and Na2HPO4 pH=7.31) and that this solution must be isotonic with blood (have the same osmotic pressure as blood). What mass of KH2PO4 would you use?
March 16, 2013 by Pepz

PHYSICS
An applied force accelerates a 50-kg crate along a frictionless floor from rest to 5 m/s.The work performed by this force is most nearly 125 J 250 J(x) 500 J 625 J 1,250 J Can someone please explain this to me and help? I thought it was 250 J but my calculation was wrong.
June 2, 2012 by Chris

chemistry
If 5.0g of Sodium Chloride in 250 mL of solution, what is the percent?
April 19, 2010 by meg

chemistry
how many grams of NH3 are in 250 ml of a 20% (w/v) ammonia solution
April 25, 2011 by alex

chemistry
What is the pH of a 0.250 M NH4Cl solution? Kb for NH3 = 1.8 ◊ 10−5. Thank you.
August 21, 2012 by fenerbahce

science
the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in water to make 100ml of ...
September 6, 2011 by chemistry

science
the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in water to make 100ml of ...
September 6, 2011 by irsha

Chemistry
The molar mass of glucose is 180.16g/mol A. How much glucose is needed to make 500 ml of a .44M (.44mol/1L) solution? .44M/L=180.16x.44/100ml=79.27/1000=.07927x500=39.64g/mol/550ml? B What volume of the .44M solution is needed to prepare 1L of a 5% glucose solution? Don't know...
December 2, 2014 by Amanda

science
during the experiment, the students were asked to prepare a 10% (mass/mass) solution of sugar in water . ramesh dissolved 10g of sugar in 100g of water while sarika prepared it by dissolved 10g of sugar in water 100g of the solution a) Are the two solution of the same ...
September 6, 2011 by irsha

chemistry
what is ph during titration of 10.00ml of 0.1000m triethylamine, ch3ch2)3n (kb=2.3x10^-, with 0.1000m HCL solution after addition of titrant (HCL) 1, 0ml, 5ml,10ml, 20ml,30ml
October 14, 2011 by ette

chemistry
what volume of butyric acid would be needed to make 25.0mL of a 1.0M solution? oh i forgot to mention that butyric acid is a liquid with a density of 1.75gr/mL can you please explain the steps more? thanks
February 15, 2012 by anonymous

chemistry
what volume of butyric acid would be needed to make 25.0mL of a 1.0M solution? oh i forgot to mention that butyric acid is a liquid with a density of 1.75gr/mL can you please explain the steps more? thanks
February 15, 2012 by anonymous

chemistry
use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution prepared by mixing equal volumes of 0.20 M NaHCO3 and 0.10M Na2CO3.(Ka=5.6x10^-11). how would you prepare NaHCO3-Na2CO3 buffer solution that has the pH of 10.40.
February 28, 2014 by abc

Chemistry(Please respond, thank you!)
For the system CaO(s) + CO2(g) = CaCO3(s), I added 1.00 mol of CaO(s) to 1.00L of 0.500M CO2(g) at 200 oC. At equilibrium the [CO2] = 0.150M. What is the value of Kp for this reaction? Kp would = CaCO3/(CaO)(CO2) I do not know what to do with the 0.500M and 1.00mol. Chemistry...
March 15, 2012 by Hannah

Chemistry
Please check my answers. 1. Using the equations, IO3- +5I- + 6H+ -> 3I2 + 3H2O C6H8O6 + I2 -> C6H6O6 + 2I- + 2H+ how many equivalents of IO3- are required to produce enough I2 to oxidize one equivalent of ascorbic acid? Answer: 1IO3- <-> 3I2 <-> 3C6H8O6 1/3 ...
February 27, 2011 by Sara

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