Sunday
March 1, 2015

Search: 10% solution

Number of results: 18,306

ChemII
A saline solution is 0.9% NaCl. What masses of NaCl and water would be required to prepare 50. L of this saline solution? Assume that the density of water is 1.000g/mL and that the NaCl does not add to the volume of the solution.
January 9, 2011 by Eric

Chemistry
Hi, I'm really having trouble this this chemistry problem. I have the answers; however I don't have extensive knowledge about titrations and I'm struggling with working it out. If anyone could suggest how to work this out (or even where to start) that would be great. Thanks! ...
August 26, 2007 by Stein

chem
an aq. solution(NaCl) made by using 133g diluted to a total solution volume of 1 L.Calculate the molarity, molality & mass % of the solution(density of solution = 1.08g/mL) [ans: M=1.92M, m=2.0m, 10.4 %] i need the calculation work bcus my ans is contradict from the real ans...
July 22, 2011 by lily

chemistry
If you mix 20.0 mL of a 3.00 M sugar solution with 30.0 mL of a 5.57 M sugar solution, you will end up with a sugar solution of_______.
November 19, 2010 by Angela

Chem--buffers
Explain why a mixture formed by mixing 100 mL of 0.100M CH3COOH and 50 mL of 0.100M NaOH will act as a buffer? in adittion to this, how do you identify if a an aqueous solution is a buffer solution, such as a solution with an acid and a base, but no common ion? is it possible ...
February 28, 2010 by Rav

CHM general 2
Indicated whether the calculated molarity of NaOH would be lower or higher Than the real value; or unaffected? a) the water of the NaOH solution is not boiled and cooler before the solution is prepared b) The buret, wet with water, is not rinsed with NaOH solution before filling
February 23, 2011 by Grettel

chemistry
Consider the following reaction CaCl2(aq) + 2Ag2SO4(aq) ! CaSO4(?) + 2AgCl(?) .Which of the following statements is true? 1. Both CaSO4 and AgCl will precipitate from solution. 2. Neither CaSO4 nor AgCl will precipitate from solution. 3. CaSO4 will precipitate from solution, ...
September 19, 2012 by cheri

Chemistry....
Wouldn't it be 3*0.234 instead of 2* 0.234? since....2Al3+ +3SO4 2- ----> Al2(SO4)3 4.) A solution is prepared by dissolving 25.0 g of aluminum sulfate in enough water to make 125.0 mL of stock solution. A 10.0 mL aliquot (portion) of this stock solution is then removed ...
October 25, 2013 by Anonymous

Chem
I'm having a lot of trouble with a simple problem. I have a 3.0% by man solution of H2O2 in H2O. The density of thr solution is 1.0 g/mL. I need to find the molarity. How do I do this? So far I have: 3.0g H2O2 x 1 mol/34.02 g= .0881 mol I'm not sure where to go or what to do ...
March 23, 2007 by Christopher

AP Chem
A solution of hydrogen peroxide, H2O2, is titrated with a solution of potassium permanganate, KMnO4. It requires 51.7 mL of 0.145 M KMnO4 to titrate 20.0 g of the solution of hydrogen peroxide. What is the mass percentage of H2O2 in the solution? If you want the whole equation...
November 3, 2008 by Anna

Chemistry
Given a diprotic acid, H2A, with two ionization constants of Ka1 = 3.9 102 and Ka2 = 5.9 108. Calculate the pH and molar concentrations of each protonated form for a: (a)0.135 M solution of H2A pH= [H2A]= [HA]= [A2-]= (b)0.135 M solution of NaHA pH= [H2A]= [HA]= [A2-]= (c)...
July 21, 2012 by Jo

Math
Describe the number of solutions for the equation. 13. 3(x 3) = 3x (1 point) one solution no solution infinitely many solutions 14. 2(y 3) = 2y 6 (1 point) one solution no solution infinitely many solutions
January 18, 2013 by plz help

Chemistry
Q1. What will be formed when propanone reacted with sodium hydrogensulphite? There is white precipitate is the resulting solution . Is it sodium carbonate? Q2. What are the difference in the products bewteen the reaction of ethanal and propanone reacting with 2,4-...
November 29, 2008 by david

Chemistry
Q1. What will be formed when propanone reacted with sodium hydrogensulphite? There is white precipitate is the resulting solution . Is it sodium carbonate? Q2. What are the difference in the products bewteen the reaction of ethanal and propanone reacting with 2,4-...
November 30, 2008 by david

chemistry
1. Find the pH of a solution whose [H3O+] is 9.5 X 10^ -8 M. 2. What is the [H3O+] concentration of a solution with a pH of 5.45? 3. What is the pOH of a solution with a [OH -] concentration of 2.97 X 10^ -10 M?
May 14, 2012 by kellin

algebra
how many ounces of a 26% alcohol solution and a 44% alcohol solution must be combined to obtain 56 ounces of a 29% solution?
February 19, 2015 by Junior

chem engineering
Mass balance on an intravenous injection (IV) bag A nurse sets up an IV drip for a patient consisting of normal saline; assume that this is an aqueous solution containing 150mM salt. The saline drip is supplemented with an antibiotic solution; assume that this is an aqueous ...
October 28, 2009 by Christina

Chemistry
0.0020 mole of HCl is dossolved in water to make a 2000ml solution. Calculate the molarity of the HCl solution, the H30, and the pH. The H30 is the same as the molarity of the HCl solution.
December 1, 2010 by Susie

Chem!!
Consider the dissolution of CaCl2: CaCl2(s) -----------> Ca2+(aq) + 2Cl-(aq) ΔH=-81.5 kJ/mol An 11.0 gram sample of CaCl2 is dissolved in 125 g water with both substances at 25.0 C. Calculate the final temperature of the solution assuming the solution has no heat loss...
November 2, 2011 by Bob

Chemistry
1. In order to make 250mL of a 0.100 M HNO3 solution from a 15.9 M stock solution, then _____mL if the 15.9 M stock HNO3 solution is needed. M1V2=M2V2, solve for V2. (0.100M * 250mL)/ 15.9M = 1.6mL V2-V1=V 1.6mL-250= -248.4 Did I do this correctly?
July 30, 2014 by Queen

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
I do not know how to solve this problem. Could you show me how? You have a stock solution of 5.00M H3PO4. a.) What would be the concentration if 20.0mL of the stock solution is diluted to 250.0mL? b.) What volume of the dilute solution would you need if you needed 0.0200mol oh...
October 7, 2014 by A

chemistry
A 27.00mL sample of an H2SO4 solution of unknown concentration is titrated with a 0.1422M KOH solution. A volume of 40.22mL of KOH was required to reach the equivalence point. What is the concentration of the unknown H2SO4 solution? Any help would be greatly appreciated. (:
December 14, 2014 by Luis

chemistry
Assignment 1 Question Consider a monohydrogen phosphate ( HPO42-) and dihydrogen phosphate (H2PO4-) buffer solution. [HPO42-] = 0.063M [H2PO4-] = 0.10M What happens when you add 1.0 ml of 0.10 M HCl to the a 99ml solution? What would the pH of the solution be without the ...
January 26, 2013 by anonymous

chemistry
If you wanted to standardize an approximately 0.1 M solution of hydrochloric acid by titrating 10.00 mL (delivered from a pipet)with approximately 30mL of sodium hydroxide solution (delivered from a buret), what should be the approximate concentration of the sodium hydroxide ...
April 22, 2010 by Peter

Chemistry
1000 g of a 50% (mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution? Please show me the detail answer
October 29, 2011 by Dewa

Chemistry
1000 g of a 50% (mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution? Please show me the detail answer
October 29, 2011 by Dewa

chemistry
You extract the iron from a tablet and dilute that to 600.0 ml in a volumetric flask. You transfer 0.600 ml of this solution to a 75.0 ml volumetric flask and dilute this to volume. When you measure the concentration of this solution, you find that it is 3.78 mg Fe/L (ppm). ...
March 28, 2012 by leigh

chemistry
Suppose that 50mL of a solution of sulfuric acid of unknown concentration was titrated with a 0.100M solution of sodium hydroxide. If it took 45.5 mL of titrant to reach the equivalence point, what was the concentration of the unknown solution of sulfuric acid???
July 7, 2013 by Coach

Chemistry
Consider the following reaction AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3 (aq) DH = -66 kJ Suppose that 100.0 mL of 0.100M AgNO3 is added to 200.0 mL of 0.100 M NaCl in a coffee cup calorimeter. Assuming that the initial temperature of the solution is 25.000C calculate ...
November 15, 2014 by Mahnoor

chemistry
A solution of acetic acid is prepared in water by adding 11.1 g of sodium acetate to a volumetric flask and bringing the volume to 1.0 L with water. The final pH is measured to be 5.25. What are the concentrations of acetate and acetic acid in solution? (Assume that the ...
January 23, 2011 by medina

Chemistry - help please
In an experiment, when 25 mL of 5.5 x 10^-3 M NaOH is mixed with 30 mL of 7.5 x 10^-3 M Fe(Br)2, a hydroxide compound is formed (Ksp = 1.8 x 10^15). Which of the following describes the resulting solution? a. The product is unsaturated b. The mixture product is saturated c. ...
October 15, 2013 by Eren

Please help with Chemistry?????
A standard solution with a FeSCN2+ concentration of 1.55x10^-4M has a percent transmittance (%T) of 18.8%. Another solution of unknown FeSCN2+ concentration has a percent transmittance of 44.8%. A) Calculate the absorbance (A) of each solution. B) Using the absorbances ...
February 26, 2014 by Dan

Chemistry: ketone and aldehydes
Q1. What will be formed when propanone reacted with sodium hydrogensulphite? There is white precipitate is the resulting solution . Is it sodium carbonate? Q2. What are the difference in the products bewteen the reaction of ethanal and propanone reacting with 2,4-...
November 29, 2008 by david

Chemistry
3.a solution has 64 grams of HI dissolved in 250 L of water. what is its [H+] 4. What is the pH of the solution in question #3? 5. A solution has 189 grams of HNO3 dissolved in 1000 L of water. What is pH?
February 25, 2014 by Emma

math
log4(x-3)=2 4^2=x-3 16=x-3 19=x Does this mean the solution would be x=19 or no solution? How would I check this to know if 19 is a solution. I know I plug it back in. Like so: log4(19-3)=2 4^2=19-3 16=16 Did i check correctly?
November 20, 2014 by Anonymous

chemistry
In standardizing a potassium hydroxide solution, a student finds that 32.60mL of the base solution is needed to titrate 0.5045 grams of KHP to a phenolphthalein end point. In another titration, 26.63mL of this same base solution is needed to titrate 0.2003grams of an unknown ...
March 14, 2014 by Anonymous

Chemistry (Re-post)
A solution contains 1.694 mg of CoSO4 (MW 155.0) per mL. Calculate a) The volume of 0.008640 M EDTA needed to titrate a 25.00 ml aliquot of this solution. So this is my working out for this section, Step 1. Moles of CoSO4 = 0.0001694mg * 25mL * (1mol/155g/mol) 2.732*10^-4. ...
January 21, 2015 by Sam

chemistry
A 0.5215 gram sample of CaCO3 is dissolved in 12M HCl and the resulting solution is diluted to 250.0 mL in a volumetric flask. How many moles of CaCO3 are used? What is the molarity of the Ca2+ in the 250 mL of solution? How many moles of Ca2+ ae in a 25.0 mL aliquot of the ...
April 28, 2009 by saddee

Organic chemistry
Assume that the partion compound is 3. Given 400mL of aqueous solution containg 12 g of compound. How many grams of A could be removed from the solution by a single extraction with 200mL of diethyl ether? Also how many total grams can be removed from the aqueous solution with ...
September 28, 2010 by ZP

general, organic and biochemistry
when a solution prepared by dissolving 4.00g of an unknown monoprotic acid in 1.00L of water is titrated with 0.600M NaOH, 38.7mL of the NaOH solution is needed to neutralize the acid. What was the molarity of the acid solution? what is the molecular weight of the unknown acid?
November 23, 2010 by Ksolo

Chemistry...Help please!!!
A solution of acetic acid is prepared in water by adding 11.1 g of sodium acetate to a volumetric flask and bringing the volume to 1.0 L with water. The final pH is measured to be 5.25. What are the concentrations of acetate and acetic acid in solution? (Assume that the ...
January 23, 2011 by medina

chemistry
The molar heat of solution of a substance is found to be +35.34 kJ/mol. The addition of 0.20 moles of this substance to 1.5 L water initially at 55. C results in a temperature decrease. Assume the specific heat of the resulting solution to be equal to that of pure water. Find...
February 16, 2011 by kate

chemistry
the following titration data were collected: a 10 mL portion of a unknown monoprotic acid solution was titrated with 1.12340 M NaOH and required 23.95 mL of the base solution for neutralization. calculate the molarity of the acid solution calculate the molarity of the acid ...
October 25, 2011 by Doss

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

chemistry
A solution of the primary standard potassium hydrogen phthalate, KHC8H4O4, was prepared by dissolving 0.4877 g of potassium hydrogen phthalate in about 50 mL of water. Titration with a KOH solution required 17.65 mL to reach a phenolphthalein end point. What is the molarity of...
April 4, 2013 by Ashley

Chemistry
A solution of the primary standard potassium hydrogen phthalate, KHC8H4O4, was prepared by dissolving 0.4877 g of potassium hydrogen phthalate in about 50 mL of water. Titration with a KOH solution required 24.71 mL to reach a phenolphthalein end point. What is the molarity of...
June 6, 2014 by Katie

chemistry
22 mL of 0.37 mol per litre acetic acid is titrated by way of a standardized 0.29 mol/L KOH solution. Calculate the pH of the solution after roughly 18 mL of the solution of KOH is added. The Ka of acetic acid proves to be 1.8 x 10^-5
April 9, 2008 by Joseph

Chemistry
Suppose you have 1 l of acid solution. With a pH of 2" , you add 1 l of pure water to it, wat happens to the pH of the solution? Explain! Is it correct if i state: the pH of the acid solution becomes neutral since pure water is neutral??
February 21, 2013 by Jessie

Chemistry
When determining the pH of a solution, will the indicator react with and change the properties of the solution. No, not significantly.
February 14, 2007 by KHNJ

chemistry
You need to make 350mls of a 70% ethanol solution of EtOH from a 95% solution. How would you do this?
January 23, 2008 by Kim

chemistry
A saturated aqueous solution of calcium hydroxide has a pH of 12.25. What is the [Ca2+] of such a solution?
March 18, 2008 by Anonymous

Algebra 1
quadratic equation. ax^2+bx+c=0 Solution 1,only solution. Can you help me I am struggling to work this out.
July 3, 2008 by Cynthia

Chemistry
Consider a .900 M Al(NO3)3 solution. This solution has a nitrate ion concentration of:
February 12, 2009 by Chris

Chemistry
Describe how you would prepare 500 ml of a solution that is 40% bleach solution by volume.
April 14, 2009 by Jessi

Chemistry
Describe how you would prepare 500 ml of a solution that is 40% bleach solution by volume.
April 14, 2009 by Jessi

chemistry
A solution of salt in water conducts electricity, but a solution of sugar does not Explain why
May 28, 2009 by john

algebra
What's the solution to 5n+1=5n-1. Please tell me if it's no solution or all real numbers or something else.
September 29, 2009 by Cristine

chemistry
8.00 of are dissolved in water to make 4.00 of solution. What is the concentration of hydronium ions, , in this solution?
November 2, 2009 by katy

chemistry
8.00 g of are dissolved in water to make 3.00 l of solution. What is the concentration of hydronium ions, , in this solution?
November 15, 2009 by leo

chemistry
What volume of a 2.90 M KI stock solution would you use to make 0.425 L of a 1.25 M KI solution?
January 14, 2010 by a

Algebra
Solve by the elimination method 2r-5s=1 5r+2s=46 The solution is _______, or there are infinitely many solutions, or there is no solution
March 21, 2010 by Liz

math
6x-4y=20 and 4y-6x=-20 What is the solution of the system of equations for this problem? A)A point B)No solution C)Infinitely many solutions
March 27, 2010 by KiKi

chemistry
a 1.00 L aqueous solution contained 5.80 g of NaOH. what is the pH of the solution? Can someone help me out with the setup of this?
April 28, 2010 by Anna

chemistry
How much water must be added if you want to make 1L of solution that is 6M, into a 3M solution
April 29, 2010 by sarah

Chemistry
Why is a NaOH solution disposed differently than a solution composed of Water and Nacl2
May 6, 2010 by Marge

chemistry
why does the pH of an aqueous solution change after HCl solution has been added
June 15, 2010 by meredith

math
Solve the following system of equations x + 4y=6 x= 4-4y A. The solution is an ordered pair ( , ) B. No Solution
July 9, 2010 by christy

chemistry
1 ml of diluted solution is added to 9 ml of deionized water. predist the ph of resulting solution
July 30, 2010 by Anonymous

Chemistry
An aqueous solution contains 2.6 %NaCl by mass. Calculate the molality of the solution.
August 5, 2010 by ashley

Chemistry
A solution having a volume of 3.0L contains 23 mmol of Oxygen 2. What is the molarity of this solution?
October 3, 2010 by Elly

algebra
solve the systems of equations {4/7x+y=2/7 -1/8x-3/4y=-11/4 a. the solution of the system is b. there are infinitely many solutions c. there is no solution
October 17, 2010 by Anonymous

chemistry
What volume of a 3.70 M KI stock solution would you use to make 0.400 L of a 1.25 M KI solution?
November 4, 2010 by MaryBeth

chemistry
What volume of a 3.70 M KI stock solution would you use to make 0.400 L of a 1.25 M KI solution?
November 4, 2010 by MaryBeth

Pharm Tech
how many milliliters of a 5% stock solution are needed to prepare 250ml of a 2% solution?
November 4, 2010 by Kelsey

chemistry
A 47.7-g sample of SrCl2 is dissolved in 112.5 mL of solution. Calculate the molarity of this solution.
November 20, 2010 by Jessica

Chemistry
How much of a 6.0 M sucrose solution should be used to make 81.0 mL of a 0.055 M solution?
November 30, 2010 by Kelsey G

chem. 7
a 20% solution of H2SO4 has a density of 1.14 g/mL. calculate the molarity, normality and molality of the solution.
December 3, 2010 by Anonymous

Chemistry
describe how you would make a 2.5L of a .100M KCL solution from a 5.5M stock solution
December 5, 2010 by lily

Chemistry
What is the molarity of the resulting solution when 300. mL of a 0.400 M solution is diluted to 800. mL?
December 6, 2010 by Ivy

chemistry
What volume of a 3.00 M KI stock solution would you use to make 0.270 L of a 1.25 M KI solution?
January 23, 2011 by Nikki

chemistry
calculate the molarity of the solution- 0.56 mole of BaCl2 in 100.0mL of solution.
February 8, 2011 by brandy

chemistry
An aqueos solution is 65%(v/v) rubbing alcohol.How many millimeters of water are in a 95-mL sample of this solution?
February 13, 2011 by Hector

chemistry
An aqueos solution is 65%(v/v) rubbing alcohol.How many millimeters of water are in a 95-mL sample of this solution?
February 13, 2011 by Hector

chemistry
find the pH of 10 mL of 1.00M solution after adding 10.00mL of indicator solution
February 14, 2011 by Anonymous

chemistry
What is the pH of a solution prepared by dissolving 7.5g HCl in water to make 375mL of solution?
February 27, 2011 by Brittany

chemistry
a certain solution contains 0.35 mol of HCl in 1200 mL of water. What is the pH of the solution?
March 7, 2011 by leah

chemistry
what is the molarity of solution made from the equivalent of 125 g of sodium nitrate in 1.0 l of solution
March 15, 2011 by andrew b

chemistry
To what volume should you dilute 20 mL of a 13 M stock solution to obtain a 0.560 M solution?
April 22, 2011 by Kristen

chemistry
how many ml of a 2M solution of HCl would be needed to neutrilize 2ml of a 5M solution of KOH?
April 26, 2011 by jackie3

Math.
1. 1/2(y-2)+2=3/8(3y-4) 2. Is 4 a solution? 3. Describe the process for finding out whether 4 is a solution to this equation.
May 6, 2011 by Unknown.

Chemistry 2
An aqueous solution of CuSO4 has a density of 1.3g/ml and is 1.16 molal. Calculate the Molarity of this solution.
July 15, 2011 by Kelci

chem
density of 20% by mass C2H6O2 solution in water is 1.03 g/mL. find the molarity of the solution.
July 21, 2011 by lily

chemistry
What is the pH of a solution in which 296 mL of HCl measured at 28.0 C and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
August 8, 2011 by Angel

chemistry
Q: A 1.5L solution is prepared using 75g of calcium chloride. What is the molarity of this solution?
December 5, 2011 by Anonymous

Chemistry
A solution contains 1.53x10-3 M Ca(NO3)2, How many nitrate ions are there in 1.2x10-6 L (1.2 L) of this solution?
January 23, 2012 by Cahleb

Chemistry
Calculate pH for strong base solution: 1.100 g of KOH in 550.0 mL of solution
February 27, 2012 by Matt D

chemistry
what volume should the solution diluted to create a 2.0M solution with a 5g of potassium hydroxide?
April 24, 2012 by Shaunice

Chemistry
What is the concentration of a solution of lithium carbonate containing 0.01 mol in 750 mL of solution
June 13, 2012 by Nia Sharma

Science
What is the pH of 115 mL of a 1.50 m solution of HNO2 that is titrated with a 1.50 M solution of LiOH at the equivelence point?
June 20, 2012 by Jake

Pages: <<Prev | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | Next>>

Members