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December 22, 2014

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

Number of results: 23,090

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 25C is observed to be 0.4010 atm. What is the mass percent of ...
November 29, 2008 by yvonne

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?

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
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

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.

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
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

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
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

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

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

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

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 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

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
calculate the mass of sodium hydroxide needed to prepare 500 mL of a 0.10 M solution.
October 14, 2007 by Rebecca

Chemistry
You are asked to prepare 0.15 M HCl from a 36% W/v stock solution.Describe the procedure of the preparation.
August 30, 2008 by Jimmy K

Physical Science
Can you prepare a solution of 650 g of KNO3 in 1 L of water at room temperature?
October 28, 2008 by Angie

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

Clinical Calculations
What weight of NaOH would be required to prepare 3000 ml of a 2.5M solution?
November 8, 2009 by Tamaka

chemistry
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

chemistry
How much concentrated 12 M hydrochloric acid is needed to prepare 100.0 mL of a 2.0 M solution?
May 11, 2010 by {RayRay} NEED HELP PLZ

Chemistry
How many grams of lithium nitrate, LiNO3, are required to prepare 3.00 102 mL of 2.00 101 M solution?
May 12, 2010 by Chris

chemistry
how would you prepare 1L of a .5M solution of each of the following? Sodium carbonate from the pure solid
August 25, 2010 by kelly

chemistry
Calculate the mass of KI in grams required to prepare 7.00 multiplied by 102 mL of a 2.60 M solution
October 12, 2010 by Anonymous

principles of chenistry
What mass of calcuim chloride is needed to prepare 3.650L of 1.75 M solution?
October 16, 2010 by 0karla

chem
a student has to prepare 3 liters of a 1.5 M solution of C6H12 O6. What mass of C6H12O6 does she need?
December 2, 2010 by Desiree

chemistry
what mass of K2SO4 would you measure out to prepare 550 mL of a 0.76 M solution?
February 7, 2011 by becca

chemistry
what mass of (NH4)SO4 is required to prepare 500 cm3 of M/4 solution?
April 4, 2011 by sarah

Chemistry
What mass of K2SO4 would you measure out to prepare 550mL of a .76 M solution?
May 9, 2011 by Josh

CHEMISTRY
DESCRIBE BRIEFLY HOW U WOULD PREPARE ONE LITER OF 0.1 NaOH SOLUTION
July 29, 2011 by IFEOMA

cerritos
how many grams of sodium choloride is needed to prepare 600ml of 9% saline solution?
September 18, 2011 by maribel

chemistry
Calculate the grams of K2CO3 required to prepare 546.0 mL of a 0.789 g/L K+ solution.
February 15, 2012 by donald

CHEMISTRY
Find the amount of CuSO4.5H2O needed to prepare 500 mL of 0.25 M solution.
February 20, 2012 by Sarah

chemistry
how much concentrated 12 M hydrochloric acid is needed to prepare 100 mL of a 2.0 M solution?
March 28, 2012 by dellanie

Chemistry
how would you prepare 500 ml of .2M solution starting with solid NaH2PO4*H20?
September 26, 2012 by Cristian

chemistry
calculate the mass of sodium hydroxide needed to prepare 100 ml of a .10 m solution
October 7, 2012 by mike

chemistry
calculate the mass of sodium hydroxide needed to prepare 100 ml of a .10 m solution
October 7, 2012 by mike

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

chemistry
Calculate the grams of solute needed to prepare each of the following. 55.0 ml of a 6.50 hcl solution.
November 2, 2012 by mary

chemistry
How many grams of solute are required to prepare 500ml of 0.5M urea solution,CO(NH2)2?
November 17, 2012 by miah

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

chemistry
how wud u prepare 1L of a 1.30M aqueous solution of barium sulfide explain
December 11, 2014 by Jim

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
the heat of this reaction,Na + 1/2 Cl 2 NaCl, is 98.3 kcal/mole what is the heat given off two moles of NaCl are formed ?
October 21, 2010 by u wish

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
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 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
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
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
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 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

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

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