a density of 1.0 M solution of NaCL

29,376 results, page 59

General Chemistry

Titration between iodine and thiosulphate. Why starch solution has to be added when the solution just turned pale yellow, but not at the beginning of reaction?

CHEM

What is the molarity of a calcium sulfate solution prepared by adding 27.89g of CaSo4 to sufficient water to make a final solution volume of 1.00L?

CHEM

What is the molarity of potassium iodide solution prepared by adding 5.810g of KI to sufficient water to make a final solution volume of 250.0mL?

Chemistry

Indicate the concentration of each ion present in the solution formed by mixing the following. Assume that the volumes are additive: 3.60 g of KCl in 76.5 mL of 0.274 M CaCl2 solution [K+] = [Cl-] =

chemistry

What is the molarity (moles per liter) of an aqueous solution that is prepared by dissolving 5.58g NaOH (MW=40) in enough water to make 250mL of solution?

Chemistry

You have 500 mL of a 5.0 M solution of nitric acid HNO3 (63.01 g / mol) dissolved in water. How many grams of nitrogen does the solution contain?

Chemistry

A student has 600.0 mL of a 0.30M solution of HNO3. How much water must she add in order to make it a 0.15 M solution? Be careful how this question is answered.

Chemistry

Calculate the pH of a solution prepared by diluting 0.0015L of a 0.100 mol/L nitric acid solution with 0.5L of water. *C1×V1=C2×V2 C2=0.3MOL/L Do we use this concentration to find the pH

Chemistry

What is the molarity of an HNO3 solution if 24.1mL of a 0.250M Ba(OH)2 solution is needed to titrate a 15.0mL sample of the acid? Can you tell me the process to finding this answer?

chemistry

what volume of a 0.247 M perchloric acid solution is required to neutralize 23.8 mL of a 0.156 M calcium hydroxide solution? _titration problem of acids/bases

chemistry

a 12ml sample of 0.4m silver nitrate solution is mixed with 8 ml of 0.8m sodium chloride solution. determine the identity of precipitate and the number of grams produced.

chem21

A potassium nitrate solution is prepared by dissolving 2.8 g of KNO3 in 27 mL of water. What is the concentration of this solution in units of grams of solute per 100 mL of solvent?

chemistry12_2016-2

14.0 grams of potassium hydroxide was dissolved to form 100 centimetre cubeof an aqueous solution. What was the concentration of this solution in mol/decimetre cube.

Chemistry

A current of 10 amps passes for an hour through a solution of sodium chloride with a volume of 1L by poles of pt,calculate the pH of the solution after the electrolysis is finished.

science

Urea forms a ideal solution in water. Determine the vapour pressure in an aqua solution containing 10 percent bymass at 40degree Celsius

Chemistry

85ml of 0.1M h2so4 solution is titrated against 0.1N koh solution . Calculate the concentration of salt formed when the acid is one fourth neutralized.

math

(1) if the second and fourth term of a G.P are 8 and 32 respectively,what is the first term? (i need a practical solution please.) (2)the eleventh term of an A.P is 25 and its term is 3 find common difference? (also need practical solution.) (3)given the sequence 0.04 to 25,...

math -solution

how many solution do this problem have? 3x(4x-5)(3x+7)(x-6)=0

Chemistry

The PH of an aqueous solution of NaCN is 10.38. What is [CN-] in this solution?

math

x=9 is a solution of the inequality x-3 is less than 7 but x= 10 is not a solution

Chemistry

If the pOH of a solution is determined to be 5, what is the pH of the solution?

algebra

The solution to this i believe is no solution need help. -2x+2>-2x-3

Solution Set

Find the solution of |x-2|>8 The answer is {1,4} how?

Chemistry

If 0.45 M of ammonia solution has a pH of 9.20, what is the H+ concentration of the solution?

chemistry

what is diluted solution and concentrated solution?

Chemistry

A saturated solution is made by dissolving 0.252 g of a polypeptide (a substance formed by joining together in a chainlike fashion some number of amino acids) in water to give 1.92 L of solution. The solution has an osmotic pressure of 3.69 torr at 25 °C. What is the ...

Science

Hello :) my name is Deqa, i was wondering if anyone knew the affects of a state of a substance on the reaction so generally speaking does it matter if a solid is dissolved in a solution or is it faster for a solution be added to another solution basically im wondering if the ...

Chemistry

Iodine clock reaction If the thiosulfate ion solution was omitted what would appear in the solution? I know that once the thiosulfate ion is responsible and exhaubated the reaction rate stops and iodine is presented in the color blue. In that case, if thiosulfate ion solution ...

Math

1. what is the solution o 204 - (-36)? A 240** B - 240 C 168 D -168 2. what is the solution of 87 + (-396)? A 183 B -183 ** C 9 D -9 3. Evaluate: -12 x 3 =? A 36 B -36** C 4 D -4 4. Evaluate: -20 ÷ -10 =? A 200 B -200 C 2 **8 D -2 5. Select all the problems that have a ...

math

Is it possible to mix a 10% sugar solution with a 20% sugar solution to get a 30% sugar solution?

math

when we mix a 10% acid solution with a 14% acid solution, we can obtain a solution that is 24% acid

Chemistry

Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and found moles of solute...

Chemistry

Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and found moles of solute...

Chemistry

The spectrophometer was used to measure the absorbance of each of a series of [FeSa]+ solutions. A standard curve was construnceted by plotting the absorbance vs. concentration (M). The slope and y-intercept were found to be 1496 M-1 and .003, respectively. An aspirin sample ...

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)...

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)...

Chemistry

Indicate how each of the following would affect the value of the absorbance (too high, too low, or not effect) of the indicated solution. I really need help. I do not understand these questions! This is from a chemistry activity to determine the unknown concentration of an ...

Chemistry

Calculate the mass of sodium chloride (NaCl) produced when 5.50 moles of solid sodium reacts in excess chlorine gas. (Hint: Start by writing a balanced chemical equation) Please help me understand HOW to solve this problem.

chemistry

About how much should the boiling point of pure water differ from .5m 1m and 1.5m aqueous solutions of NaCl and same molal solutions of CaCl2 Trying to check experimental data from van't hoff factor lab

Chemistry

a solution of HCL is approximately 0.1M and has to be standardized . 1.234g Na2CO3 are dissolved to make 100ml of solution. 20mL of this solution are titrated with the HCL solution, requiring 31.3mL for the second equivalence point. what is the exact concentration of the HCL ...

Chemistry

1. An aqueous solution contains 0.154 M ascorbic acid (H2C6H6O6) and 0.196 M hydrobromic acid. Calculate the ascorbate (C6H6O62-) ion concentration in this solution. Can you explain how to do this please? thank you. Also if you can is number 2 missing information or am I ...

Math

What volume, in ml, of a 60% of HCl acid solution must be added to 100 ml of a 30% HCl solution to make a 36% HCl solution. We need 2 alegabreic (?) equations. The first I can get is: 0.36x - 0.60y = 100ml (this is probably wrong)? Blah. I can't get the other one. -.- VolHCL*....

Chemistry (reaction with amine)

Phenol dissolved into sodium hydroxide solution to give another solution A. What would be formed when A reacted with phenylamine/nitrous acid mixture , butylamine/nitrous acid mixture and ammonia/ nitrous acid respectively ? The resulting solution were brown , red and ...

Chemistry

A 205 mg sample of a diprotic acid is dissolved in enough water to make 250.0 ml of solution. The pH of this solution is 2.15. A saturated solution of calcium hydroxide (Ksp= 1.3 x 10-6) is prepared by adding excess calcium hydroxide to water and then removing the undissolved ...

Math

1) Solve: 8x ¨C (6x + 4) = 8 x = -2 2) -7x > 1/15 the solution set is: {x | x > -105} 3) Solve 5> -4x + 4 or 10 ¡Ü -4x +3 the solution to the inequality is: [-¡Þ, -7/4] U [-1/4,¡Þ] 4) Use < or > to make the statement true: -9 < 3 5) Graph the ...

Chemistry

1. If an aqueous solution that is 0.15 M in HF has an osmotic pressure of 3.9 atm at 25oC, what is the percent ionization of HF at this concentration? 2. A mixture of 2 volatile liquids is said to be ideal if each component obeys Raoult’s Law: Pi=XiPio Two volatile liquids A...

chemistry!!

The pH of an aqueous solution is 3.25. a. Calulate the concetration of the hydronium ions in the solution. b. Calulate the concetration of the hydroxide ions in the solution.

Math

How many gallons of a 13%-salt solution must be mixed with 6 gallons of a 22%-salt solution to obtain a 16%-salt solution?

Math

4(2x + 3) = 2(3x - 4) one solution infinite solutions * my answer* no solution 6 - a = 1/3(9a - 18) one solution * my answer* infinite solutions no solution 3(4x - 3) - 7x = 5x - 9 one solution infinite solutions *my answer* no solution 4(2x - 3) - 4x (answer all that apply) ...

chemistry

If you add 50 g of sylvite in 100 ml of water at 60 ° C, the resulting solution will she unsaturated, saturated or supersaturated? You prepare a solution and you add 50 g of potassium nitrate to 100 ml of water at 50 ° C. What type of solution are you prepared? Ammonia is a ...

algebra

a radiator contains 25 quarts of a freeze water and anti freeze solution ,of which 60% anti freeze. how much of this solution should be drained and replace with water for the new solution to be 40% anti freeze?

Chemistry

1.In a titration, 50.0 mL of an acetic acid solution required 20.0 mL of a standard solution of 0.200 mol/L NaOH(aq). The concentration of the acetic acid solution is a. 0.08 mol/L. b. 0.50 mol/L. c. 0.05 mol/L. d. 1.0 mol/L. e. 0.30 mol/L. How do I solve this question?

Chemistry (isotonicity)

How many milligrams of NaCl should be used to make the following prescription isotonic? Dextrose anhydrous 2.5% Sodium chloride q.s. Sterile water for injection Ad 1L There is only dextrose anhydrous 5% available

chemistry

Which of the following chemical reactions represents a neutralization reaction? A. CH4 + 2O2 CO2 + H2O B. HCl + NaOH H2O + NaCl C. NH3 + H2O NH4++ OH- D. CH3COOH + H2O CH3COO- + H3O+

chemistry limiting reagent

if i have a 1:1 mole ratio as with this reaction: NaOH + HCl --> NaCl + H20 and i use same volumes (50mL) and same Molaritys (1.00M) then there is no limiting reactant correct??

SCIENCE AGAIN

Thanks so much for all your help. These multiple choice questions always have me confused. Here goes: The density of fresh water either a.)reaches a maximum at 4 degrees C, b.)decreases with decreasing temperature below 4 degrees C, c.)increases with decreasing temperature ...

chemistry

The molarity of an aqueous solution of barium hydroxide is determined by titration against a 0.335 M nitric acid solution. If 32.8 mL of the base are required to neutralize 21.5 mL of nitric acid, what is the molarity of the barium hydroxide solution?

Chemistry I - University

Suppose 5.87 g of barium acetate is dissolved in 300. mL of a 71.0 m M aqueous solution of sodium chromate. calculate the final molarity of barium cation in the solution. You can assume the volume of the solution doesn't change when the barium acetate is dissolved in it...

chemistry

Determine the number of representative particles in each of the following and identify the representative particle. a. 13.0 mol Ag b. 23.7 mol H20 c. 0.178 mol NaCl

CHEMISTRY

. For which reaction is ƒ´Ssys ƒ® 0? A) CH4(g) + 2 O2(g) ¡÷ CO2(g) + 2 H2O(l) B) NH3(g) + HCl(g) ¡÷ NH4Cl(s) C) 2 NH4NO3(s) ¡÷ 2 N2(g) + O2(g) + 4 H2O(g) D) HCl(aq) + NaOH(aq) ¡÷ NaCl(aq) + H2O(l)

chemistry

determine the number of representative particles in each of the following and identify the representative particle: 11.5 mol Ag; 18.0 mol H20; 0.150 mol NaCL.

Chemistry

For which reaction is delta Ssys > 0? A) CH4(g) + 2 O2(g) ¨ CO2(g) + 2 H2O(l) B) NH3(g) + HCl(g) ¨ NH4Cl(s) C) 2 NH4NO3(s) ¨ 2 N2(g) + O2(g) + 4 H2O(g) D) HCl(aq) + NaOH(aq) ¨ NaCl(aq) + H2O(l)

Chemisry

6M HCl + 1M NaOH => NaCl + H2O If I'm understanding this correctly, all of the NaOH is used up because the molarity is 1 where the HCl's is 6 this leaves excess HCl correct?

Chemistry

A 0.327 g sample of a mixture of NaOH(s) and NaCl(s) requires 31.5 mL of 0.150 M HCl(aq) to react with all the NaOH(s). What is the mass percentage of the NaOH(s) in the mixture?

physics

An infinite sheet with a negative surface charge density runs parallel to the x axis. Another infinite sheet with an equal but opposite sign surface charge runs parallel to the y axis. The difference in electric potential from the point x = +5.2 m, y = +3.1 m to the point x...

chemistry

If you pass 10.0mL of a 50.0mL solution of [Co(en)2Cl2]Cl that has been reduced with Zn through a cation exchange column, you will obtain a solution that has three H+ ions for every Co3+ ion that was originally present in the sample. These H+ ions are titrated with 0.10-M NaOH...

chemistry

According to Raoult's law, which statement is false? a. The vapor pressure of a solvent over a solution decreases as its mole fraction increases. b. The solubility of a gas increases as the temperature decreases. c. The vapor pressure of a solvent over a solution is less than ...

Biology

What is the sample size in this experiment? How can you tell what the sample size is in this case? A team of researchers observed that the acorn density of the oak forests in New York fluctuates from year to year and that mice populations in the forest were increased when the ...

Chemistry

25 ml of cloudy ammonia solution is added to a 250 ml Erlenmeyer flask. 50 ml of .1 M HCl is then immediately added to the flask, which reacted with the ammonia in the solution. Next, the solution was titrated with .025 M NaOH to neutralize the excess HCl that was not ...

chem help

You need to produce a buffer solution that has a pH of 5.08. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? The of acetic acid is 4.74.

science

1. what occurs as the convection current moves toward the upper mantle density increases density decreases temperature increases temperature decreases 2. what occurs as the convection current moves toward the lower mantle (same options as #1)

Chemistry

What preperation produces a 2.0 Mole solution of C6H12O6? a) 90.0 grams of C6H12O6 dissolved in 500.0 mL of solution b) 180.0 grams of C6H12O6 dissolved in 1000mL of solution c) 90 Grams of C6H12O6 dissolved in 1000mL of solution D) 180.0 Grams of C6H12O6 dissolved in 500.0mL ...

Chemistry help needed

How do I prepare 90% formic acid from conc. formic acid (98%-100% of density 1.22g/ml)? Please help me check if my calculations are correct. Assuming conc. formic acid is 99%, 0.99 X 1.22 = 1.2078 Add 1.2078 / 9 = 0.1342ml H2O to 1ml of conc. acid to have a solution that is 90...

Chemistry

The pH of an 0.0870 M solution of weak acid A is 2.20. The pH of an 0.0830 M solution of weak acid B is 4.07. The pH of an 0.0890 M solution of weak acid C is 5.13. Identify the three acids from among those listed below (the Ka values are listed in Appendix E of your textbook...

chemistry

Too make a 4% solution of paraformaldehyde from a 20 % solution. C1V1=C2V2 (20)(10ml)= (4)(x) x= 50ml so I would need to add 45ml of PBS and 4ml of the paraformaldhyde. Is that right.

Social Studies

What is a possible solution of ending the 1850s crisis? A solution that will address the failures of Congressional/Executive leadership, legislation and subsequent public reaction.

chem

Suppose a solution contains a concentration of 1.0x10^-4M PbSO4 (Ksp=1.8x10^-8). Which of the following terms describes this solution? saturated , unsaturated, supersaturated, or cannot be determined

Chemistry

Determine the molarity (in mol/L) of NO2− ions in solution when 9.77×101 g of sodium nitrite is added to enough water to prepare 3.94×102 mL of the solution.

Chemistry

Balance these reactions using the half-reaction method Sn2+ + IO3- -> Sn4= + I- (acidic solution) CrO2 + ClO- -> CrO42- + Cl- (basic solution)

Chem

When dissolved in an aqueous solution, which of the following salts will yield a neutral solution? Choose one answer. a. KCN b. NaHSO4 c. Na3PO4 d. AlBr3 e. MgBr2

Chemistry

If each of the salts listed in A through E were dissolved in water to make a 0.1 M solution, which solution would have the lowest pH? a. NaNO2 b. NaF c. AlCl3 d. KNO3 e. Na3PO4

chemistry

if I add water to 100.0 mL of a 0.15 M NaOH solution until the final volume is 150.0 mL what will the molarity of the diluted solution be? If I set this up properly I believe it is 0.10 M.....am I correct?

Chemistry

A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 625 of a solution that has a concentration of ions of 0.800

science

A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 350 of a solution that has a concentration of ions of 0.500 ?

algebra

the perimeter P of a square is four times the length of ones side s, or P=4s. Is (1455) a solution of this equation? If not, find a solution that uses one of the given values

Chemistry

A complex ion, [M(OH)6]4-, is orange in solution. Which of the following ligands, when bound to the same metal might cause the solution to be blue? Cl- CN- CO F- H2O I- NH3 NO2- OH- NCS-

chemistry

You have 20 mL of a 0.1 M aquesous solution of the weak base (CH3)3N (Kb = 7.4x10^-5). This solution will be titrated with 0.1 M HCl. how many mL of acid must be added to reach the equivalence point?

Chemistry

What is the concentration, in g/L, of a solution containing 0.65 mol HNO3 in 150 mL solution? Give your answer rounded to nearest whole number, followed by a space and the units.

chemistry

if 36.23mL of a standard 0.1959M NaOh solution is required to neutralize 25.00mL of H2SO4. what is the Molarity of the acid solution, balance the equation. Please help with calculation. Thank you for your help.

chemistry 11

if a solution is contanimated with a chemical that causes a larger amount of solid, opaque particles floating in the solution, would the absorbance read too high or too low, and why?

chemistry

Part A 6.00×10−3 mol of HBr are dissolved in water to make 16.0L of solution. What is the concentration of hydroxide ions,[OH-], in this solution? Express your answer with the appropriate units.

Chemistry

A 20.0mL 0.3M HCl solution is titrated with 0.4M NaOH. What is the exact pH of the solution before titration? And what is the pH at the equivalence point?(are there any straightforward formulas to use on this kind of problem?)

Chemistry

A 20.0mL 0.3M HCl solution is titrated with 0.4M NaOH. What is the exact pH of the solution before titration? And what is the pH at the equivalence point?(are there any straightforward formulas to use on this kind of problem?)

Chemistry

You mix 200.0 mL of 0.350 M HCl with a 300.0 mL solution of 0.100 M Ba(OH)2. Calculate the concentration of each ion remaining in the solution after the reaction has reached completion.

Chemistry

What is the percent by volume concentration of a solution containing 300.mL of isopropyl alcohol and enough water to give 400.ml of solution?Which component is the solute and which is the solvent?

Biochemistry

What is the pH of a solution prepared by mixing 150 mL of 0.1M HCl with 300mL of 0.1M sodium acetate (NaOAC) and diluting the mixture of 1L? PKa of acetic acid is 4.76. and give solution

chemistry

8.00g of NaOH are dissolved in water to make 4.00L of solution. What is the concentration of hydronium ions, [H3O+], in this solution? Express your answer with the appropriate units.

ap chemistry

a solution is prepared by dissolving 4.9 g C12H22 O11 (nonelectrolyte) in 175 grams of water. calculate the freezing poitn and osmotic pressure (25C) of this solution.

chemistry

Aqueous ammonia is commercially available at a concentration of 16.0 M. Part A How much of the concentrated solution would you use to prepare 500.0mL of a 1.30M solution?

Chemistry

How many grams of solid KOH must be added to 100ml of a buffer solution which is 0.1M each with respect to the weak acid HA and its potassium salt KA in order to make the pH of the solution 6.0?

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