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September 22, 2014

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

Number of results: 22,247

chemistry
how would you prepare a 550ml of 0.350 normal calcium chloride solution
January 27, 2013 by gerson

chemistry
How do you sole this problem: how many grams of CaCl2 are needed to prepare 7.25 L of .015M solution?
March 15, 2013 by Brittany jones

Chemistry
You are to prepare a KH2PO4 and Na2HPO4 solution with pH=7.31. What should the concentration of [2(HPO4) 2-] / [H2PO4-]
March 16, 2013 by Pepz

chemistry
describe the detailed procedure of how to prepare 500 ml of 1M of sodium acetate solution.
August 22, 2013 by Diinho

chemistry
what volume of 16 sulfuric acid must be used to prepare 1.5 L of a 0.10 M H2SO4 solution
September 13, 2013 by kathy

Physical Sciences
I have a project practical investigation to do and I have no idea how to go about with it. The problem is: Calculate the mass of sodium hydroxide used to prepare a 0,5M NaOH solution in a 250ml volumetric flask. Determine the concentration of the acetic acid solution used (...
August 10, 2012 by Cindy

chemistry
theoretical yield of NaCl using 0.016 mols HCl with HCl + NaOH - NaCl + H2O as the equation for the reaction
May 1, 2011 by Anonymous

chemistry
If the solubility of NaCl at 25 degrees Celsius is 36.2 g/100 g H2O, what mass of NaCl can be dissolved in 200.0 g of H2O?
March 13, 2011 by colleezy

chemistry
solubility of NaCl in water at 298K is 35.8 kg per 100 kg of water calculate mass fraction of NaCl?
August 7, 2011 by bikram

chemistry
An aqueous solvent of NaCl has a melting point of 165C How many moles of NaCl are present in a 189 g solvent?
March 4, 2013 by breseida

Chem
If you begin with 10. liters of 0.15 M NaCl, what mass of NaOH can be formed? 2 NaCl(aq) + 2 H2O(liq) H2(g) + Cl2(g) + 2 NaOH(aq)
April 17, 2013 by Kaleb

chemistry
How would you prepare a solution of about 8mg/100ml of ascorbic acid in water (25ml)? I'm not sure if they mean to use that ratio of ascorbic acid in water to make a 25 ml solution or if the wording means something else.
February 22, 2014 by solution chemistry

chemistry
It takes 19.6 mins for a 10.0mL sample of an unknown gas to effuse through a pinhole. A 10.0mL sample of He, required 5.05mins. What is the molar mass of the unknown gas? I got that you have to do : effuse rate of He/Effuse rate of Mx = Square root of (Mx/MHe) but then im ...
February 24, 2014 by jin

Chemistry
How can i explain the key features of the periodic table relate to the conclusions after a titration experiment The experiment was the preperation of a standard solution of sodium carbonate and titration for the equation between hydrchloric acid and sodium carbonate Objective...
October 11, 2010 by Paul

Chemistry
Given that the solubility of sodium chloride is 36 grams per 100 grams of water. Which of the following solutions would be considered supersaturated? A. dissolve 5.8 moles of NaCl in 1 L of water B. dissolve 1.85 moles of NaCl in 300 ml of water C. dissolve 3.25 moles of NaCl ...
November 21, 2009 by Coug

chemistry
Which of the following statements about boiling points are true? A. The boiling point of 0.1 m NaF(aq) is lower than the boiling point of 0.1 m methanol(aq). B. The boiling point of a 0.5 m aqueous solution of LiOH is the same as the boiling point of a 0.5 m aqueous solution ...
April 18, 2013 by Anonymous

Chemistry
Can anyone answer this question please. (Determine the concentration of an aqueous NaCl solution if 31.5 mL are required to reach the equivalence point when titrated with 25.0 mL of 0.20 M AgNO3.)
September 19, 2010 by John

Chemistry
If 100. mL of 0.400 M Na2SO4 is added to 200. mL of 0.600 M NaCl, what is the concentration of Na+ ions in the final solution? Assume that the volumes are additive.
January 16, 2011 by emoni

chemistry
calculate the mass of solid NaCl that must be added to 1.5L of 0.100M AgNO3 solution to precipitate all the Ag+ ions in the form of AgCl?
November 18, 2011 by NONO

chemistry
1.To make the following saline solution (375ml 0.5% w/v sodium chloride). I have weighed 1.875g of NaCl. What will be the volume of water that is required?
December 3, 2012 by Christina

CHEM-PLEASE HELP
Calculate the molar solubility of silver chloride (AgCl) in: a-deionized water and b-.20M NaCl solution Given Ksp=1.6*10^-10
April 25, 2013 by JO

Chemistry
"Calculate the pH of NaCl". I know that NaCl is neutral...but I don't know how to show that it is neutral. The ka value for the Cl ion is "very large", so what do I do?
May 2, 2010 by Stuck

Chemistry
which sample of matter is a mixture (1)H2O(s) (2)H2O(l) (3) NaCl(l) (4)NaCL(aq) please explain the answe !
February 10, 2011 by Alex

Chemistry Urgent
A calorimeter contains 32.0mL of water at 13.0∘C . When 2.30g of X (a substance with a molar mass of 82.0g/mol is added, it dissolves via the reaction X(s)+H2O(l)X(aq) and the temperature of the solution increases to 30.0∘C . Calculate the enthalpy change, H ...
March 11, 2014 by Anna

Chemistry
Calculate the volume of 2.503 N HNO3 added to 100 mL of HCl in order to prepare 1.1251 N acid solution from the following data: 58.96 mL NaOH will neutralize 2.521g of potassium tetroxalate and 45.57 mL of HCl will neutralize 53.0 mL of the NaOH solution.
January 21, 2014 by Summer

Chemistry-please help
"Use a 10% w/v nitric acid solution." How to prepare 10% w/v nitric acid solution? Do I just weigh 10g of conc nitric acid (65%) and dilute to 100ml with water?
October 11, 2011 by jessie

CHEM
Help on part "c": The forensic technician at a crime scene has just prepared a luminol stock solution by adding 19.0g of luminol into a total volume of 75.0mL of H2O. a)What is the molarity of the stock solution of luminol? anwer I got: molarity of luminol solution = 1.43M b)...
October 18, 2007 by K

CHEM
Help on part "c": The forensic technician at a crime scene has just prepared a luminol stock solution by adding 19.0g of luminol into a total volume of 75.0mL of H2O. a)What is the molarity of the stock solution of luminol? answer I got: molarity of luminol solution = 1.43M b)...
October 18, 2007 by K

Chemistry
I need help I can't seem to get the right answer. Please help! 1/2 H_2 (g) + 1/2 Cl_2 (g) --> HCl (g) -92.3 kJ/mol Na(s) + 1/2 O_2(g) + 1/2H_2(g) --> NaOH(s) -426.8 kJ/mol NaCl(s) --> Na(s) + 1/2Cl_2(g) 411.1 kJ/mol H_2O(l) -->H_2(g) + 1/2O_2(g) 285.8 kJ/mol HCl(g...
November 8, 2013 by Alex

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 ...
December 7, 2011 by Ken

chemistry
Suppose that 0.483 g of an unknown monoprotic weak acid, HA, is dissolved in water. Titration of the solution with 0.250 M NaOH(aq) required 42.0 mL to reach the stoichiometric point. After the addition of 21.0 mL, the pH of the solution was found to be 3.75. (a) What is the ...
June 14, 2013 by Sara

Chemistry
A sample of a mixture containing only sodium chloride (NaCl) and potassium chloride (KCl) has a total mass of 4.000g. When this sample is dissolved in water and excess silver nitrate is added a white precipitate (AgCl) forms. After filtration and drying, this precipitate had a...
January 26, 2007 by Steve

Chemistry
A hospital saline solution is analyzed to confirm its concentration. A 60.0 mL sample with a mass of 50.443 g is evaporated to dryness. (a) If the solid sodium chloride residue has a mass of 0.413 g, find the mass/mass percent concentration of the NaCl solution. % (b) Find the...
March 26, 2014 by Harry

Biotechnology
How would you make 450 mL of a 0.250 M NaOH solution?
November 13, 2010 by Craig

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

chemistry
a solution is made by mixing 14.5g of NaOH and 72.0 mL of 0.250 M HNO3
March 4, 2011 by Anonymous

math
write an integer for each solution a salary increase of $250
September 9, 2013 by Alex

chemistry
A buffer solution contains 0.200 M NH3 and 0.250 M NH4Cl. What is the pH of the buffer solution after the addition of 10.0 mL of 0.100 M NaOH to 50.0 mL of the buffer? Kb for NH3 is 1.8 x 10-5.
October 26, 2010 by Brett

comprehensive income
Can I please have help with the following problem. Bee Spears Clothing Stores reported sales of $250,000 cost of goods sold of $150,000, operating expenses of $25,000, income tax expense rate of 30% in calendar year 2006, and an unrealized loss from marketable securities (...
October 9, 2006 by confused

chemistry
Sodium bicarbonate is often used to neutralize acids, such as the following reaction: NaHCO3 + HCl ---> NaCl + H20 + CO2. What is the normality of a sodium bicarbonate solution containing 5.08 g NaHCO3 in 150.0 mL solution? this chapter in chemistry is really confusing and ...
April 7, 2013 by Patricia

AP Chemistry
Calculate the volume of a 36% solution of hydrochloric acid (density = 1.50g/mL, molar mass = 36 g/mol) required to prepare 9 liters of a 5 molar solution. A. 1 liter B. 2 liters C. 3 liters D. 4 liters E. 5 liters
September 15, 2011 by Stephanie

Chemistry
You want to determine the molar heat of solution of sodium chloride using a 10.0 g sample of NaCl(aq) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the specific heat of the solution is the same as the specific heat of ...
July 14, 2011 by Neha

Chemistry
How would you prepare 455 g of aqueous solution that is 6.50% sodium sulfate Na2SO4 by mass?
February 4, 2008 by Lauren

Chemistry
Last one. Describe how you would prepare 100ml of a solution that is 22% acetic acid by volume?
March 24, 2009 by Jessi

Chemistry
Last one. Describe how you would prepare 100ml of a solution that is 22% acetic acid by volume?
March 24, 2009 by Jessi

Chemistry
Last one. Describe how you would prepare 100ml of a solution that is 22% acetic acid by volume?
March 24, 2009 by Jessi

chemistry
How would you prepare 100.0 mL of 0.07500 M AgNO3 solution starting with pure solute?
January 11, 2010 by jennifer

college chemistry
how much solute is needed to prepare 450ml of a 2.0% (m/v) potassium chloride solution?
March 1, 2010 by shaneka

College chemistry
How do you calculate the number of mL you would use to prepare 5.0 L of 0.20 M NaOH from a 5.23 M stock solution.
April 26, 2010 by laney

12th grade chemistry
How do I prepare 500 ml of a .100 mol/L solution of copper sulphate.
July 30, 2010 by Kelsey

chemistry
how would you prepare 1.00 L of a .50M solution of H2SO4 from concentrated (18M) sulfric acid?
August 24, 2010 by kelly

college chemistry
given 3.650 l of a 1.75 M solution, what mass of calcium chloride is needed to prepare?
September 22, 2010 by Anonymous

Chemistry
How many milliliters of pure acetic acid (density = 1.05 g/mL) would be required to prepare 1.00 L of the solution?
November 16, 2010 by Devin

chemistry
Calculate the mass of kl in grams required to prepare 5.00x10power 2mL of 2.80M solution
March 11, 2011 by lisa

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

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

Chemistry
how to prepare 100 mL of exactly 5.00% (w/w) aqueous hydrogen solution? If given that initial it is 50.0% (w/w) and has density of 1.18 g mL^-1
March 30, 2011 by Balnur

10th grade Chemistry
To what volume should 5.o g of kcl be diluted in order to prepare a o.25 m solution
April 26, 2011 by Angelica Martinez

chemistry
How many grams of K3PO4 would be needed to prepare a 1.73 M solution in a total volume of 427 mL?
October 12, 2011 by Lauren

chemistry
How many grams of K3PO4 would be needed to prepare a 1.73 M solution in a total volume of 427 mL?
October 12, 2011 by Lauren

chemistry
what mass of potassium chloride is required to prepare 5.00L of a 2.00M solution of KCL
October 24, 2011 by TROUBLED

chemistry
How many grams of lithium nitrate, LiNO3, are required to prepare 3.00 102 mL of 2.00 10−1 M solution?
December 6, 2011 by kathy

chemistry
Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
February 12, 2012 by Laura

chemistry
Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
February 12, 2012 by Laura

chemistry
Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
February 12, 2012 by Laura

chemistry
Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
February 12, 2012 by Laura

chemistry
what mass of ethanol(C2H5OH) will be required to prepare a 2.00m solution in 8.00kg of water?
April 16, 2012 by maria

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

chemistry
For each of the following explain how you would prepare 1.0 L of a solution that is 0.10 M in K+. Repeat for concentrations of 1.0 102 ppm K+ and 1.0% w/v K+.
September 12, 2012 by Anonymous

Chemistry lab
What mass of NaOH is required to prepare 500.0 mL of 0.1029 M stock solution?
October 9, 2012 by Donnie

chemistry
How much HCl 9in grams) is needed to prepare 546 mL of solution with a pOH of 10.00 at 25?
October 17, 2012 by aliceallyx3

CHEM
How many grams of magnesium chloride are needed to prepare 100ml of a 0.325 M MgCl2 solution?
February 7, 2013 by Lisa

Chemistry
How many grams of HCl need to be dissolved in 0.5L of water to prepare a solution of pH 1.5? Does anybody know how to work this out? Thanks :)
February 13, 2013 by Matt

Chemistry
How many grams of HCl need to be dissolved in 0.5L of water to prepare a solution of pH 1.5? Does anybody know how to work this out? Thanks :)
February 13, 2013 by Matt

Chemistry
6. Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH
November 27, 2013 by Gregory

Chem
Please help how to set up How many grams of CuSO4 * 5H2O are needed to prepare 100.ml of a 0.10 M solution?
April 29, 2014 by Nicholas

Inorganic Chemistry
Which aqeuous solution has a freezing point closest to that of 0.30M C12H22O11? A) 0.075M AlCl3 B) 0.15M CuCl2 C) 0.30M NaCl D) 0.60M C6H12O6 I know the answer but I don't know the reason or rationale behind it. Please explain. I suggest you review Raoult's Law at http://...
August 5, 2007 by Vic

chem
A calorimeter contains 16.0ml of water at 15.0degrees celsius. When 1.60g of X(a substance with a molar mass of 46.0g/mol) is added, it dissolves via the reaction X(s)+H20(l)->X(aq) and the temperature of the solution increases to 25.0degrees celsius. Calculate the enthalpy...
October 8, 2008 by tomi

Chemistry
TRUE OR FALSE? 1) A solution that is made out of 1.00mol/L ammonia and 0.50mol/L of ammonium chloride is a basic buffer. 2) The pH at the equivalence point of a weak base with a strong acid is expected to be less than 7 because the acid that is added is very strong 3) The pH ...
December 8, 2012 by Lorenzo

Chemistry
how much chloride ions does 10.00 mL of .500M BaCl2 have?
October 28, 2010 by Yv ette

chemistry
What is a typical speed for a N2 molecule in this room? a) 50 m/s b) 500m/s c) 1500 m/s
January 17, 2011 by emoni

Montgomery CCC
how many grams are present in 20ml of .500M of Fe(NO3)3?
December 18, 2011 by Racheal

chemistry
Given the thermochemical equation below, calculate the amount of energy released when 250. g of NaOH (molar mass = 40.0 g/mol) reacts with an excess of HCl. Report answer to the correct number of significant figures in units of kilojoules, kJ. NaOH + HCl --> NaCl + H2O ...
April 25, 2013 by sarah

chemistry
Acetic acid, CH3CO2H, is the active ingredient in vinegar. It's often abbreviated "HOAc". Vinegar is acidic because acetic acid makes H3O+ when it partially ionizes in water: HOAc(aq) + H2O H3O+(aq) + OAc–(aq) Suppose that you have a solution of acetic acid in water that ...
March 19, 2013 by hannah

math
an employee pays 250 in taxes during one month. the tax rate is 30% what is her gross pay and net pay for that month i am so confused would i say 250*30%= $75 than add 250+75=$325 Can someone tell me if that is right.
March 4, 2010 by haleigh

science-chem
Four bottles, labeled A through D, each containing about 5 grams of finely powdered white substance are found in a lab. Near the bottles are four labels specifying high purity and indicating that substances are glucose (C6H12O6), sodium chloride (NaCl), aluminum oxide (Al2O3...
January 27, 2007 by jisun

General Chemistry
When a solution of nickel (II) chloride is mixed with a stoichiometric amount of colorless sodium hydroxide solution, a green, gelatinous precipitate forms. (a) Write the balanced molecular equation and the net-ionic equation for this reaction. molecular: Ni(Cl)2 (aq) + NaOH (...
July 16, 2013 by <3

Math
How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?
September 18, 2010 by Jessica

math
How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?
September 18, 2010 by Jessica

medicine
How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?
September 18, 2010 by Jessica

chemistr
A solution preapred from 50.0 g NaCL AND 150 G Of water has a mass/mass percent concentration
April 3, 2011 by chela

chemistry
if Kf for water is 1.86 geg mol-1, a 0.1m solution of NaCl in water will have freezing point of
April 23, 2012 by pratik

science
to prepare 500cm^3 of glucose solution of concerntration 1M. The chemical formula of glucose is C6H12O6.calculate (1)the relative molecular mass and molar mass.(2)the amount of glucose which will be in the solution.(3)the mass of glucose to be weighed
July 1, 2012 by abajane

science
to prepare 500cm^3 of glucose solution of concerntration 1M. The chemical formula of glucose is C6H12O6.calculate (1)the relative molecular mass and molar mass.(2)the amount of glucose which will be in the solution.(3)the mass of glucose to be weighed
July 1, 2012 by abajane

chemistry
Lactic acid, C3H6O3, is found in sour milk. A solution containing 1.00g NaC3H5O3 in 100.0mL of 0.0500M C3H6O3 has a pH= 4.11. Calculate the Ka of lactic acid
April 14, 2011 by Lauren

Chemistry
50.0mL of 0.200M HCl diluted to 100.0 mL and titrated with 0.200M NaOH. what is total volume of solution(L) if volume of NaOH added(mL) are 0.00, 5.00, and 10.0
March 25, 2011 by Anonymous

biology
You need a 5 microgram glucose/ml aqueous solution, but the lab balance is accurate to only 0.01g (ie., it displays 2 digits to the right of the decimal point) Describe 2 methods by which you could accurately prepare this solution using the lab balance. I don't know what to do...
September 4, 2013 by alex

chemistry
Explain how to make a 1.5M solution of copper (II) sulfate with a volume of 250 mL.
February 6, 2011 by valentina

chemistry
How would you make 250 ml of a .51M calcium hydroxide solution?
March 30, 2011 by Anonymous

chemistry
How would you make 250 ml of a .51M calcium hydroxide solution?
March 30, 2011 by Sarah

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