a density of 1.0 M solution of NaCL
29,493 results, page 50

chemistry
what is the mass of aluminum phosphate needed to create a .25M solution with 650 mL solution? 
Chemistry
Codeine is added to 100ml of water until the solution concentration is 0.800M. What is the pH of this solution? 
Chemistry
What is the concentration of a solution if I dissolve 42g of NaOH in a total volume of 375ml of solution 
Chem Scc
5.82 g of CuNO3 is dissolved in water to make a 0.240 M solution. What is the volume of the solution? 
chemistry
what is the molarity of a solution containing 1 mole of urea per litre of the solution ? Hw to solve this 
Differential Equation
Find the general solution of t^2y"3ty'+4y=0 on (0, infinity sign, given that Y1=t^2 is a solution 
Chemistry
I have a 40 ml solution of pH 4.36. I need to make this solution at pH 8.5 by adding extra 10 ml of HCl and NaOH. Thanks 
ODE
if the DE x^2.y"+xy'y=0 has a general solution c1x+c2.x^1, use the variation of parameters to find the particular solution x^2.y"+xy'y=22/x 
Chemistry (science)
I don't know how to answer this. An aqueous solution of glucose has a freezing point of 0.37. What is the concentration of the solution? 
chemistry
To what final volume should you dilute 60.0 of a 5.20M KI solution so that 40.0 of the diluted solution contains 3.15 of KI ? 
Chemistry 3A
compute the molarity of a solution consisting of 2.0 moles of calcium chloride in 500mL of solution. 
chemistry
What is the pH of a solution prepared by dissolving 1.533 g HCl in water to make 420 mL of solution 
chemistry
A saturated solution of kno3 at 70°c is cooled to 10°c. What mass of a solid of precipitate out of solution. 
math
tell whether the system has one solution, infine\itely many solutions, or no solution y=3x14 yx=10 
chemistry
What is the pH of the solution in which 241 mL of HCl gas measured at 28.0°C and 1.02 atm is dissolved in 1.5 L of aqueous solution 
Math 116
Identify the solution(s) of the system of equations, if any. 6x2y=12 4y=12x24 a. no solution b. (0,2) c.(2,0) d.infinitely many solutions 
chemistry
If you dilute 27.0\({\rm mL}\) of the stock solution to a final volume of 0.460\({\rm L}\) , what will be the concentration of the diluted solution? 
CalculusHELP!!!
Find the complete general solution and a particular solution that satisfies the initial conditions: 2y'' + y'  4y = 0 y(0)=0, y'(0)=1 
chemistry
150 mL of water is added to 50 mL of the solution produced in question 3. Calculate the new pH of the solution. 
chemistry
What volume of a 0.500 M solution should be diluted to make 250 mL of a 0.400 M solution? 
Math
A system of inequalities may have no solution, but is there a case where there might only be one solution? 
algerbra
Identify the solution(s) of the system of equations, if any. 4x  4y = 4 12y = 12x  12 no solution (0, 1) (1, 0) infinitely many solutions 
chemistry
How would you prepare 385 ml of a 0.856 m NaOH solution starting with a 4.93 m stock solution 
chemistry
What is the volume of solution prepared when 6g of acetic acid is dissolved to prepare 0.25M solution 
Chemistry
How much of a 5.2M sucrose solution should you use to make 81.0mL of a 0.040M solution? 
science
Calculate the molarity of a solution which contains 6.456g of Na2CO3 dissolved in 250.0 ml of solution. 
Chemistry
Describe the procedure to prepare this solution: 100 mL of a solution 0.1 M of KMnO4 Help? I don't understand what this implies. 
chemistry
269 mL of a 0.2089 M sodium carbonate (Na2CO3) solution is prepared and labelled "Solution A". 
chemistry
200 ml of h2o is added to 400ml (m/10) of hcl solution. Find the pH of final solution? 
chemistry
How much of a 6.0M sucrose solution should you use to make 77.0mL of a 0.055M solution? 
Chemistry
A solution contains 0.284 M sodium nitrite and 0.257 M nitrous acid. What is the pH of the solution? 
Chemistry
If the mole fraction of ethanol in aquas solution is 0.05 . Calculate morality of solution ? Explain it's. 
science
How much water must be added to 200 g of a 10% NaOH solution to obtain 8% solution 
chemistry
Calculate the ionic strength of a solution that contains 1.45g Na3PO4 in 0.500L of solution. 
chemistry
calculate the ph of a buffer solution containning 0.1M acetic acid and a 0.1M solution of sodium acetate 
Chem
In the aqueous solution of H2SO4 its mole fraction is 0.2 then closest value of molality of solution is (1) 13.9 (2) 9.8 (3) 10.2 (4) 11.2 
Chemistry
Calculate molarity of KNO3 solution if 69 g of salt are dissolved into 250 mL of solution 
Chemistry
If 100ml of 1M NaOH solution is added to water make a solution of 1.5L, calculate its normality 
Chemistry
50 L of your 0.05M sodium. chloride solution, what volume of 1.25M solution would be necessary? 
science
6.025*10^20 molecules of acetic acid are present in 500 ml of its solution .What is the concentration of the solution? 
Math
How much pure antifreeze must be added to 18 liters of a 20% solution to make a 40% solution ? 
chemistry
Calculate the normality of solution containing 4g of sodium hydroxide present in 1 litre of solution ? 
Chemistry
Determine the volume of a 0.1 M solution of HCl, necessary to titrate 20 mL of a 0.5 M solution of NH3. The value of Kb is 1.8 x 105. 
Chemistry
In the aqueous solution of H2SO4 its mole fraction is 0.2 then closest value of molality or solution is a)13.9 b)9.8 c)10.2 d)11.2 
Math
In what proportion should you combine 2:5 soaking solution and distilled water to create 1:20 solution? 
Chemistry
If you dilute 19.0 mL of the stock solution to a final volume of 0.350 L , what will be the concentration of the diluted solution? 
chemistry
Calculate the [H⁺] for the aqueous solution in which [OH⁻] is 1 x 10⁻⁹. Is this solution acidic, basic or neutral? Show your work 
pH???+chem!
7. A few drops of bromothymol blue indicator are placed into 250 mL of 0.20 mol/L HCl(aq). A sample of 1.8 g of NaOH(s) is then dissolved into this solution. The final colour of the solution is predicted to be How can I do this one? What is the pH of the HCl solution? THen, ... 
Chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including the state, of the soluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by comma. CoCl2(aq) + ... 
Chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including the state, of the soluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by comma. CaBr2(aq) + ... 
Chemistry
You have 1liter buffer solution containing 0.1 M HF and 0.05 M NaF. Now you add 0.055 moles of HCl to it. A) Do you think that the solution still retains it's effectiveness? B) Explain rationally how you came to the conclusion. I do not think that the solution would retain it'... 
Great Valley
How many moles of potassium sulfate would you need to prepare 1200 grams of 5.0% sulfate (m/m) solution? Calculate the volume of solution of 3.6 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 ... 
chemistry
Indicate whether each solution is acidic, basic, or neutral. a. [H3O+] = 6.9 x 101 M This solution is acidic. b. [H3O+] = 8.2 x 1013 M This solution is basic. c. [H3O+] = 3.2 x 101 M This solution is acidic. 
chemistry
ndicate whether each solution is acidic, basic, or neutral. a. [H3O+] = 6.9 x 101 M This solution is acidic. b. [H3O+] = 8.2 x 1013 M This solution is basic. c. [H3O+] = 3.2 x 101 M This solution is acidic. 
Chemistry
1)A solution prepared by adding 0.400 mol of acetic acid (pKa = 4.74) and 0.400 mol of sodium acetate to 100.0 mL of water. The pH of this buffer solution is initially 4.74. Predict the final pH when 55.0 mL of 1.10 M NaOH is added to solution 2) A solution prepared by adding ... 
Physics
Three identical glasses are filled to the same height with water. The first glass is filled with water only(Wa). The second glass has an object of volume V and density half that of water floating in it (Wb). The third glass has an object of volume V and density twice that of ... 
Chemistry
A solution is made by mixing 12.0 g of NaOH and 75.0 ml of 0.200 M HNO3 a) write a balanced equation for the reaction that occurs between the solutes. b) Caclulate the concentration of each ion remaining in solution. c) Is the resultant solution acidic or basic? O.k. I am ... 
CHEMISTRY
A solution is made by mixing 12.0 g of NaOH and 75.0 ml of 0.200 M HNO3 a) write a balanced equation for the reaction that occurs between the solutes. b) Caclulate the concentration of each ion remaining in solution. c) Is the resultant solution acidic or basic? O.k. I am ... 
chemistry
A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil. After cooling to room temperature, the solution was poured into a 250mL volumetric flask and diluted to the mark with DI ... 
IR chemistry  instrumental anaylsis
my last instrumental analysis lab was basically about becoming familiar with using an IR spectrometer. I used a salt solution with a sodium chloride salt plate although it was not stated in the procedure to do so. the IR spectra seems to have come out fine however I'm not sure... 
Chemistry
An acetic acid buffer solution is required to have a pH of 5.27. You have a solution that contains 0.01 mol of acetic acid. How many moles of sodium acetate will you need to add to the solution? The pKa of acetic acid is 4.74. Show all calculations in your answer. 
Math Help PLEASE
Solve the system of equations by graphing then classify the system as consistent and the equation as dependent or independent. 4xy=26 4x+5y=10 What is the solution of the system of Equations? (type am ordered pair Type N if there is no solution Type R if the solution is all ... 
Chemistry
If you have 200 ml of a 0.1M solution of acetic acid (pka=4.75), 1. How many ml of a solution of 1.O M NaOH would you need to adjust the pH to 5.2? 2. How many ml of water would you then add to make the solution of 0.05M in total acetic acid (ie., acetic acid + acetate ion) 
Math
Professor Baird wants to mix a solution containing 10% acid with one containing 15% acid to obtain a 20 ounce solution containing 12% acid. How many ounces of the 10% solution should the professor use? Translate the word problem into an equation. 
Social Impact of Technology
Marge maintains that there is no direct correlation between population density and poverty. Mason argues that population density is normally associated with poverty and political instability. Who is correct? A. Marge and Mason are both incorrect. B. Marge and Mason are both ... 
chemistry
Which of the following is NOT true for solutes and solvents? A. At least one solvent must be dissolved in a solute to make a solution. B. Solute concentration can be measured in terms of solute moles / solution volume or solute moles / solvent mass. C. A solvent is the ... 
Chemistry
A buffer solution of volume 100.0 mL is 0.150 M Na2HPO4(aq) and 0.100 M KH2PO4(aq). Refer to table 1. (a) What are the pH and the pH change resulting from the addition of 80.0 mL of 0.0500 M NaOH(aq) to the buffer solution? pH pH change (include negative sign if appropriate) (... 
chemistry
You need to prepare 500.00 mL of a 0.25 M solution of nitric acid . Concentrated nitric acid comes from the chemical copmanies as a 15.8 M liquid. How much (in mL) of this 15.8 M solution will you need to dilute to 500.00 mL to get the desired 0.25 M solution? 
chemistry
You need to prepare 500.00 mL of a 0.15 M solution of nitric acid . Concentrated nitric acid comes from the chemical copmanies as a 15.8 M liquid. How much (in mL) of this 15.8 M solution will you need to dilute to 500.00 mL to get the desired 0.15 M solution 
Chemistry
1000g of a 50%(mass percentage) nitric acid solution is to be dil ute to 20%(mass percentage) nitric acid solution.how many lit ers of water should be added to the starting solution? 
Science
Answer with solution, plz. 1. What is the concentration of the solution by volume when dissolved is used 30 grams & the water is 60 grams. 2. How much solvent in grams is present in a solution with a concentration by volume of 40% the solute of content is 60 grams. 
Chemistry lab
In my lab class I am having to write a lab experiment and preform it tomorrow. It deals with specific heat of unknown metal and density. the first part you have boil water with the metal in it, and then put it in a cup and measure the temp change. I have completed to specific ... 
Chem
A Kilogram was originally defined as the mass of ___________. The kilogram was originally defined as the mass of one litre of pure water at standard atmospheric pressure and at the temperature at which water has its maximum density (3.98 degrees Celsius). This definition was ... 
physics
The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion km, is meant to orbit the asteroid Eros at a height of about 15 km from the asteroid's center. Eros is roughly boxshaped, with dimensions 40 km 6 km 6 km. Assume Eros has a density (mass/volume) of about 2... 
physics
The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion km, is meant to orbit the asteroid Eros at a height of about 15 km from the asteroid's center. Eros is roughly boxshaped, with dimensions 40 km 6 km 6 km. Assume Eros has a density (mass/volume) of about 2... 
Physics
The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion km, is meant to orbit the asteroid Eros at a height of about 15 km from the asteroid's center. Eros is roughly boxshaped, with dimensions 40 km 6 km 6 km. Assume Eros has a density (mass/volume) of about 2... 
Chemistry
Physical Developer (PD) is a set of solutions used to develop latent fingerprints on different porous and nonporous surfaces. It is often used to develop fingerprints on currency. Below are FBI recipes for PD. Solution 1 serves as a cleaning solution before using a mixture of ... 
Physics, still don't get it!
The "karat" is a dimensionless unit that is used to indicate the proportion of gold in a goldcontaining alloy. An alloy that is one karat gold contains a weight of pure gold that is one part in twentyfour. What is the volume of gold in a 20.0 karat gold necklace whose weight... 
chemistry
Determine the density of methane (CH4) in g/L at 24.7oC and 1.1 atm ideal gas eqn: P = (rho)RT, where: pressure: P = 1.1 atm specific gas constant: R, R = R / M, where R = 0.0821 Latm / Kmol and, molecular weightCH4: M = 0.016 kg/mol R = 0.0821/0.016 = 5.13 and temp. T = ... 
chemistry exercises
The concentrated H2SO4 of 155g dissolved in enough amount of water if acidic solution is 2.3L a) what is the mole of H2SO4 b) what is the concentration H2SO4 c) what is the concentration of H+(H3O+) created in the solution d) what is the PH value of solution e) what is the ... 
chemistry
a piece of chalkboard dissolvedin acid solution and the solution bubbled vigorously.The gas caused barium hydroxide solution to form a white precipitate.what is the gas given off?what is the white precipitate?write a chemical equation for the formationof the white precipitate. 
Chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including the state, of the soluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by comma. Al2(SO4)3(aq... 
Chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including the state, of the soluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by comma. Al2(SO4)3(aq... 
Chemistry
Hydrogen peroxide solution, H2O2(aq), is available with a concentration of 1.667mol/L. When diluted to a concentration of 0.25mol/L, the solution is used as a disinfectant. What volume of water should be added to 100 mL of the concentrated hydrogen peroxide solution to prepare... 
Differential equations,Calculus
So I have the following differential equation. The general solution I have is: t=k(1/r)+c I now need to find the particular solution when t=0 and the radius (r) = 1cm. So k is a constant which is approx 3.9 (5/4pi) So for the particular solution im really just plugging in the... 
Chemisty
Aluminum hydroxide forms a positively charged sol. Which of the following ionic substances should be most effective in coagulating the sol? NaCl CaCl2 Fe2(SO4)3 K3PO4 
Chemistry
In which reaction does the oxidation number of oxygen increase? a. Ba(NO3)2+K2SO4>BASO4+2KNO3 b. HCL+ NaOH> NaCl+H20 c. Mg0+ H20> Mg(OH)2 d. 2SO2+02> 2SO3 e. 2H2O> 2H2+O2 
Chemistry
What mass of baking soda (NaHCO3) would be required to neutralize 10.00mL of 12.1M muriatic acid remaining in a empty water bottle? HCl(aq)+NaHCO3(aq)=>NaCl(aq)+CO2(g)+H2O(l) 
Chemistry(Please help, thank you!)
How would I find the molality of NaCl with the following information? initial temperature= 98degrees celsius final temp=100 degrees celsius. Kbp(water)=0.512 
Chemistry
Balance the follow equation using change in oxidation number method. (1) P4 + HNO3 = H3PO4 +NO2 + H2O (2) Na2Cr2O7 + FeCl2 + HCl = CrCl3 + NaCl + FeCl3 + H2O 
chemistry
1. An 887.0 mg sample of a mixture containing only NaCl and KCl is dissolved in water, and excess AgNO3 is added to yield 1.913 g of AgCl. Compute the mass% of each compound in the mixture. 
chemistry
Which chemical equation is balanced to show that mass is conserved during the reaction? A. Na + Cl₂ > NaCl B. 2H₂ O₂ > 2H O + O₂ C. CH₄ + O₂ > CO₂ + 2H₂ O D. AgNO₃ + MgCl₂ > AgCl +MgNO₃ Please Help!!! 
chemistry
what is the molarity of a solution that has 50.6 grams of solid potassium hydroxide, KOH, dissolved in 800 ml of solution? 
Chemistry
why do crystals from in solutions once removed from the heat e.g. copper sulphate solution or a alum solution 
Chem II
Ccalculate the molarity of the resulting solution when 125.0 ml of water is added to 350.0 ml of a 3.75 M solution of HCl 
chemistry
what is the PH of a solution prepared by adding enough water to 15.00g of NaNO2 to make 275ml of solution 
chemistry 2
The pH of a Ba(OH)2 solution is 10.66. What is the hydroxide concentration? If the solution volume is 125ml, how many grams of Ba(OH)2 have been dissolved? 
Math 116 algebra please check
Solve by elimination method 2x + 3y =1 4x + 6y =2 What is the solution of the system N there is no solution 
chem
why is it necessary to heat the oxalic acid solution before titrating it with the potassium permanganate solution 
Algebra
If i work out my substitution problem and i get 20=20 does that mean i have only one solution or NO SOLUTION?!