a density of 1.0 M solution of NaCL
29,680 results, page 69

math please help
Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2 +bx+c=0 The Solution is 10, only solution! 
Chemistry
In an acidbase neutralization reaction 28.74 mL of 0.500 M potassium hydroxide reacts with 50.00 mL of sulfuric acid solution. What is the concentration of the H2SO4 solution? Please help with this question, thank you. 
chemistry
a 340.4 ml sample of solution contains 27.4 g of cacl2. calcuate the molar concentration of calcium ion in this solution. this is what i did 27.4(110.98) =.247mol .247mol/34.4L=.726Mcacl2 is this correct? 
chemistry
A 100.0 mL portion of 0.250 M calium nitrate solution is mixed with 400.0 mL of .100M nitric acid solution. What is the final concentration of the nitrate ion? 
Chemistry
What is the concentration of HCl when 25.0 mL of HCl completely reacts with 10.0 mL of 0.1M solution of NH4OH (subscript 4)? Solution steps would be helpful so I can solve other similar problems. 
chemistry
Neutralization Reaction Molarity Calculations: For example: What is the molarity of a Ca(OH)2 solution if .032 L of the solution is exactly neutralized by .015 of a 0.56 M HCl? How do I solve I am unsure where to begin. 
chem
A scientist wants to make a solution of potassium phosphate, K3PO4 for a lab experiment. How many grams of K3PO4 will be needed to produce 575ml of a solution that has a concentration of K+ ions of 1.4M. 
chemistry
Rachel adds together 450.9g of a 22.0% solution of potassium carbonate and 275 grams of a 5.57m solution of Barium chlorate. How many grams of precipitate does she produce? 
chemistry
Use the following balanced equation. 3Sr(OH)2 + 2H3PO4 > 6H20 + Sr3(PO4)2 20 mL of H3PO4 is required to react with 40 mL of a 0.15 M Sr(OH)2 solution. What is the molarity of the H3PO4 solution? 
chemistry
Make a buffer solution with the following specification pH=5.5 Volume=2L total concentration=1M ... a) Name the components?... b) How many grams of each component would you use to make 2L of solution 
chemistry
Make a buffer solution with the following specification pH=5.5 Volume=2L total concentration=1M ... a) Name the components?... b) How many grams of each component would you use to make 2L of solution 
chemistry
What is the molarity of a solution containing 8 grams of solute in 500 mL of solution? Round to the nearest hundredth. Don't forget the unit! (gram formula mass of solute = 24 g) 
chemistry
What is the molarity of a solution containing 8 grams of solute in 500 mL of solution? Round to the nearest hundredth. Don't forget the unit! (gram formula mass of solute = 24 g) 
algebra,math
Solve the equation. Check both solutions and only write the real solution. the square root of 6m minus 5 = m A. {1} B. {5} C. {1, 5} D. no real solution I think its B 
chemistry
what is the molarity of a solution prepared by dissolving 2.24 grams of NaOH in enough deionized water to obtain 500.0ml of solution?The molar mass of NaOH is 40.0g 
chemistry
what is the molarity of a solution prepared by dissolving 2.24 grams of NaOH in enough deionized water to obtain 500.0ml of solution?The molar mass of NaOH is 40.0g 
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. 
physical science
120ml of a solution whose concentration is 30g/ml was diluted with distilled water by raising its volume to 160cm3. Calculate the concentration of the new solution. 
biochemistry
A solution was prepared by dissolving 8.0g of solid ammonium sulfate (MW= 132.14, specific volume= 0.565ml/g) in 35ml (i.e 35g) of water. What is the final volume of the solution? 
chem
A sample of potassium hydrogen oxalate, KHC204, weighing 0.717 g, was dissolved in water and titrated with 18.47 mL of an NaOH solution. Calculate the molarity of the NaOH solution. 
Science
A solution of silver nitrate is mixed with a solution of potassium sulphide.Write the molecular,total ionic,and net ionic equations illustrating the reaction. 
Chemistry
Consider a 0.71 M solution of each of the following salt dissolved in distilled water. Will the solution by basic, neutral, or acidic? KI= NH4NO2= (CH3CH2)3NHNO2= (CH3CH2)2NH2ClO4= 
difficult chemistry
Calculate the molarity of thiosulfate solution if 0.400mg of Kl03 required 100ml of the thiosulfate solution provided that excess kl and hcl were added. Who helps me 
Chemistry I
If 30.0 mL of 0.2 M nitric acid and 30.0 mL of 0.25 M solution of sodium hydroxide are mixed, what is the molarity of sodium nitrate? Assume that total volume of the solution after mixing is equal 60.0 mL. 
Chemistry
Calculate the change in pH if 0.050 g of solid NaOH is added to 250 mL of a buffer solution that contains 0.80 M NaH2PO4 and 0.17M Na2HPO4. I found the pH of the buffer solution to be 6.54. 
Chemisty Help Please!
A solution is prepared by dissolving 25.0 g of glucose, C6H12O6, in 125 g of water at 25oC. (show work please) Determine the freezing point of the solution. 
physical science
A solution that contains a large amount of salt and a small amount of water is said to be a __________ solution. A. dilute B. unsaturated C. concentrated D. saturated 
analytical chemistry
Determine the concentration of iron in an aqueous solution containing 0.2810 grams of Fe(NH4)2(SO4)2 per liter of solution. Express the concentration in mg/dl. 
math
a drug is supplied as a 20 mg/ml solution in a 50 ml vial. you need to make 15 ml of a 10 mg/ml solution. how much concentrate and how much diluent are needed to obtain the desired final volume? 
Algebra
Determine the value or values of d that complete the square for the expression. (Enter your answers as a commaseparated list. If there is no solution, enter NO SOLUTION.) (a) x^2 + 7x + d d = b) x^2 − 18x + d d = (c) x^2 + dx + 64 d = (d) x^2 + dx + 49/4 d = 
Science
What is the molarity (moles per liter) of a solution in which 80 grams of sodium hydroxide, NaOH, is dissolved in 1 liter of solution? How do I convert the 80grams into mols? 
Chemestry
What volume of 0.140 M K2Cr2O7 will be required to oxidize the Fe2+ ion in 81.5 mL of 0.176 M FeSO4 solution? Cr2O72 + Fe2+ Cr3+ + Fe3+ (acid solution) 
chemestry
A sample of 0.75 KCL is added to 35 g of H2O in a calorimeter and stirred until dissolved, the temperature of the solution decreases from 24.8 to 23.6 what is the enthalpy of solution expressed in kJ / mole KCL? 
Chemisrty
To what volume must 1.0 l of a 6.0 m solution of hcl be diluted in order to prepare a 0.2 m solution? I just need to find wht steps i need to take to get the answer 
chemistry
A sample of potassium hydrogen oxalate, KHC2O4, weighing 0.717 g, was dissolved in water and titrated with 18.47 mL of an NaOH solution. Calculate the molarity of the NaOH solution. 
Chemistry
Calculate the volume of solution of 3.6 M NH4CI needed to prepare 350.0ml of 1.24 M NH4CI. How many grams of ammonium chloride are in the solution you created in the above problem. 
Chemistry
I have to prepare 1ppm of Fe+2 solution in 1litre. How many grams of ferrous ammonium sulphate will be dissolved in 1litre to make above solution.. plzz guide me 
chemistry
If a solution containing 22.34 g of mercury(II) perchlorate is allowed to react completely with a solution containing 6.256 g of sodium sulfate, how many grams of solid precipitate will be formed? 
chemistry
You have 95.0 mL of a 2.50 M solution of Na2CrO4(aq). You also have 125 mL of a 2.50 M solution of AgNO3(aq). Calculate the concentration of Na+ after the two solutions are mixed together. 1.08 M 0.475 M 5.00 M 0.00 M 2.16 M 
chemistry
sorry,for the mistake. To 200mL of a 0.1M solution of a CH3COOH (Ka=1.8 x 105) 70mL of a 0.2M solution of NaOH have been added.calculate the pH before and after the NaOH addition. 
Chemistry
You have 1683.8 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of NaOCl are in the solution? (show work Please) 
Algebra
Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.) 3x3y+6z=15 x+2yz=11 5x8y+13z=19 
college algebra
Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.) x +2z=5 3xyz=12 6xy5z=27 
Algebra 2
What is the solution for the determinant? 1 7  0 3 How do you find the solution? I'm probably going to feel really stupid because it's probably simple but I'm just having some problems. Okay, a lot. 
Chemistry
In a titration experiment, 15.0 mL of 0.10 M Ba(OH)2 is required to titrate a 10.0 mL of an unknown solution of HNO3. Calculate the concentration of the HNO3 solution using the data. 2HNO3 + Ba(OH)2 ® Ba(NO3)2 + 2H2O 
Chemistry
Need help! Calculate the molar concentration of OH in a 0.724M solution of hypobromite ion (BrO; kB= 4.0 x 10^6) what is the pH of this solution? I got as far as kB = [OH][HBrO]/[BrO] please help me with the rest. 
analytical chemistry
A solution containing both Fe 3+ and Al 3+ can be selectively analyzed for Fe 3+ by buffering to a pH of 2 and titrating with EDTA. Th e pH of the solution is then raised to 5 and an excess of EDTA added, resulting in the formation of the Al 3+  EDTA complex. The excess EDTA ... 
chemistry
A mixture of NaCl and NaBr has a mass of 2.04g and is found to contain 0.70g of Na. What is the mass of NaBr in the mixture? 
Chem
A precipitate is expected when an aqueous solution of porassium iodide is added to an aqueous solution of 
Chemistry
Is it always apparent in a solution which component is the solute, for example, in a solution of liquid in a liquid? 
human resources
a chemist has 400 mililiters (mL) of solution that is 21% acid. How many mililiers of acid are in the solution 
chemistry
How many gallons of distilled water must be mixed with 50 gallons of a 30% alchohol solution to get a 25% solution? 
math
how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution? 
math
how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution? 
math
how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution? 
chemistry
If 24.7 of 0.250 M NaOH solution are needed to neutralize 19.8 mL of H2SO4 solution, what is the molarity of the H2SO4? 
chemistry
What is the concentration of this solution? If you added 10mL of water to the 10mL of 0.010M CaCl2 solution. 
chemistry
If you have 137.8 mL of a 38.4% aqueous solution of ethanol, what volumes of ethanol and water are in the solution? 
chemistry
If you have 137.8 mL of a 38.4% aqueous solution of ethanol, what volumes of ethanol and water are in the solution? 
chemistry urgent
if 500 ml of HCl solution is needed to react with 2.43 g of Mg, what is the molarity of the HCl solution? 
chemistry
determine the molarity of a 18 ml sample of HCl solution that is required to prepare 30 ml of 2.3 M HCl solution? 
chemistry
What is the pH of a solution prepared by dissolving 6.0 g of HCl in water to make 415 mL of HCl solution? 
chemistry
a solution that has an absorbance of 0.603 is diluted ten fold. What is the absorbance of this solution now? 
chemistry
when 50 ml of an HNO3 solution is exactly neutralized by 150 ml of a 0.50 M solution of KOH, what s the concentration of HNO3 
science
What volume of .01M KOH solution is needed to react with 20ml .01M Zn(OH)2 solution 
chemistry
what is the new concentration of a NaOH solution that was made from 75 mL of a 5.5 M NaOH solution and diluted it to 250 mL? 
Science
how would you make 1 molar solution using 4 molar solution and pure water? 
mes
a solution of sugar in water is 5% by mass. how much sugar is present in 250 gm. of solution? 
Math
How many liters of water should be added to 20 liters of 40% solution of acid to obtain 30% solution? 
Chemistry
If 62.7 ml of .208M HCL is needed to needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solution? 
chemistry
what is the molarity of a HCl solution that contains 13.0 g of HCl in 125 mL of solution? Answer in units of M 
Chemistry
An aqueous solution is 0.257 m NaOH. What are the boiling point and freezing point of this solution? 
chemistry
what are the steps for making 0.5 aqueous solution of MgCl2? What are the necessary steps to make this solution? 
algebra 1
y=2x1 2xy1=0 a)this sytem has excatly onw solution b)this system has indinetly many solutions c)this system has no solution d)(1,1) and (0,0) 
Chemistry
Describe how to make 2.5L of 0.1M HCL solution from 12M HCL concentrated solution and water. Thank you 
chemistry
It takes 62 mL of 0.124 M KOH to neutralize46.7 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? 
Chemistry
When investigating heat of solution of NaoH& NH4No3, what is the heat of solution of the two cpds? 
Chemistry
A 15.0 mL sample of 0.250 M H2SO4 is neutralized by 20.5 mL of KOH solution. What is the molarity of the KOH solution? 
Chemistry
If you have 200ml of 25% aqueous solution of ethanol, what volume of ethanol and water are in the solution? 
Chemistry
150cm3 of KOH solution containing 5.6g of KOH per dm3 of solution.what is the concentration? 
Chemistry
A solution contains 0.00245 M HCl. Determine the [H3O+] for the solution. points Determine the [OH] 
Chemistry
suppose you added 26.0 ml of 0.01 M NaOH to the solution, what is the molarity of excess NaOH in the mixture? what is the ph of this solution? 
chemisty
how many mL of a stock 2.50M HCI solution are required to prepare 25.mL of a 0.15M HCI solution? 
Chemistry
How many mL of a stock 2.50M HCl solution are required to prepare 25.0 mL of a 0.15M HCl solution? 
mathematical physics
Show that: (I) u = e^xsiny is a solution of Laplace's equation. (ii) u = x^2+t^2 is a solution of the wave equation. 
mathematical physics
Show that :(i) u=e^xsiny is a solution of Laplace's equation. (ii) u= x^2+t^2 is a solution of the wave equation. 
mathematical physics
Show that : (I) u = e^xsiny is a solution of Laplace's equation. (ii) u= x^2+t^2 is a solution of the wave equation. 
mathematical physics
Show that :(I) u = e^xsiny is a solution of Laplace's equation. (ii) u = x^2+t^2 is a solution of the wave equation. 
math
25.0 mL of an unknown HCl solution is titrated with 17.5 mL 0.100 M NaOH. What is the Molarity of the HCl solution? 
science
25.0 mL of an unknown HCl solution is titrated with 17.5 mL 0.100 M NaOH. What is the Molarity of the HCl solution? 
chemistry
If 17.5 mL of 0.553 M KOH is needed to neutralize 25.0 mL of an HBr solution what is the molarity od HBr solution 
math
How many grams of water are needed to reduce 100g of a 30% acid solution to a 10% acid solution? 
chemistry
a given sample of MgCl2 solution has 6×10^23 ions. what is the number of Cl(1) ions in the same solution? 
chemistry
what volume of a 0.5M solution of sulphuric acid is required to prepare 2 litres of a 0.4M solution of the acid 
Chemistry
1.000 grams of KHP consumed 43.3 mL of KOH solution. What is the molarity of the KOH solution? 
algebra
What would the concentration be if we mixed 200 of 10% sugar solution and 300 of 20% sugar solution ? 
ANALYTICAL CHEMISTRY
3. How many moles of HCl are required to make 15.00 mL of an aqueous 2.500 molar HCl solution? How many moles of Cl are in 1.000 mL of the aqueous 2.500 molar HCl solution mentioned above? How many moles of H+ are in 1.000 mL of the aqueous 2.500 molar HCl solution mentioned ... 
ANALYTICAL CHEMISTRY
3. How many moles of HCl are required to make 15.00 mL of an aqueous 2.500 molar HCl solution? How many moles of Cl are in 1.000 mL of the aqueous 2.500 molar HCl solution mentioned above? How many moles of H+ are in 1.000 mL of the aqueous 2.500 molar HCl solution mentioned ... 
chemistry
All of the following acidbase pairs are examples of buffers EXCEPT: (Question from "Cracking the MCAT, 20102011 edition" by The Princeton Review) HCl/NaCl CH3CO2H/NaCH3CO2 HF/NaF H2CO3/NaHCO3 I chose ch3co2h/nach3co2 
chemistry pH, neutralization
What volume of NaOH was required to have neutralized the HCl. HCl + NaOH > H2O + NaCl There no other information given in the problem except in later questions like the NaOH had 0.1 M and that there was 50.00 mL of HCl.