a density of 1.0 M solution of NaCL

29,885 results, page 67
  1. chemistry

    What concentration of ammonia, [NH3], should be present in a solution with [NH4+]= 0.734M to produce a buffer solution with pH= 9.13? For NH3, Kb= 1.8x10^-5
  2. chemistry

    Determine the Molarity of a 125 mL NaOH solution if upon titration with 5.5 mL of an 2.5 M HCl solution, the end point of the titration was reached
  3. algebra

    write a quadratic equation in the variable x having the given numbers as the solutions. type the equation in standard form ax^2+bx+c=0 solution 6, only solution
  4. chemistry

    what will haprn if ammonium chloride solution is used to standardize potassium tetraoxamaganate VII solution instead of ammonium iron II sulphate
  5. Chemistry

    what would the concentration of the solution of a sulfuric acid be titration of a 25.0 ml sample of acid required 20.00 ml of a 0.20 naoh standardized solution for it to become neutralized
  6. Alg 1

    What are the approximate solutions of 2x^2 -x + 10 = 0 In working this, I came up with a negative (-79) under the radical sign. Can I take the sq rt of a negative? my choices are: -2, 2.5 -1.97, 2.47 -2.5, 2 No solution I think it is no solution. Is this
  7. Chemistry

    How can the Tyndall effect be used to distinguish between a colloid and a solution? Can the presence of Brownian motion distinguis between a solution and a colloid? explain.
  8. Chemistry

    You have 250 mL of a 0.80 M solution of silver nitrate AgNO3 (169.87 g/mol) dissolved in water. How many grams of AgNO3 does the solution contain?
  9. Chemisty

    74.0 mL of a 1.80 M solution is diluted to a volume of 248 mL. A 124-mL portion of that solution is diluted using 135 mL of water. What is the final concentration?
  10. chemistry

    osmotic pressure of a solution containing 7g of protein in 100ml of solution is 20mmhg at37celsius calculate molecular mass of the protein
  11. Chemistry

    In an acid-base neutralization reaction 25 mL of 0.4 M NaOH reacts with 50.00 mL of H2SO4 solution. Calculate the concentration of the H2SO4 solution?
  12. Chemistry

    what is the molar concentration of h2so4 solution is 2.0ml of which is completely neutralized by 45.0ml of 0.115 mol/L NaOH solution?
  13. math

    The equation: T= 2* pi* sqrt(2/3L/9.8) Solve for L. Please show the solution step by step. The square root is giving me trouble in my solution. Thanks for your help.
  14. Chemistry

    c) How many grams of each matter is in 2,0 litres of the following water solutions i) 8,6 til-% ethanol solution ii) 22,6 til-% glycol solution (1,2-ethanediol)
  15. algebra

    write a quadratic equation in the variable x having given the numbers as sollutions type the equation in standard form ax^2+bx+c=0. solution 4 only solution
  16. math

    a radiator holds 5 gallons. how much of the 30% antifreeze solution should be drained and replaced with pure water to reduce the solution to 9% antifreeze?
  17. Chemistry

    What type of reaction will occur when an aqueous solution of lithium chloride is mixed with an aqueous solution of ammonium sulfate?
  18. chemistry

    If you made up a solution of NaOH by adding 0.010 mole of solid NaOH to 1.0 liter of distilled water, what would be the pH of the solution?
  19. Chem 1010

    15.3 g of KCl (MM = 74.55 g/mol) is dissolved in enough water to make 600 mL of solution. Calculate the molarity of the KCl solution.
  20. Chemistry

    How many moles of NaOH per liter of solution would you expect to have in a solution that is labeled "0.105 M NaOH" on the side of the gradulated cylinder?
  21. Chemistry

    A volume of 25.0 mL of 8.0 M acetic acid is diluted with sufficient water to prepare 1.00 liter of solution. What is the concentration of the diluted solution?
  22. chemistry

    For a 0.50 molal solution of sucrose in water, calculate the freezing point and the boiling point of the solution. Please list each step.?
  23. Chemistry

    1. What volume of nitric acid solution with mass fraction of 16% is required to make make 250ml solution with 0.2mole/l?
  24. Chemistry

    Predict the products when a chemist mixes an aqueous sodium chloride solution with an aqueous calcium nitrate solution.
  25. calculas

    caluclas (intersection of three planes) HELP!!!? in the equations k is a real number 1.x-2y+z=4 2.x-y-z=3 3.x+y+kz=1 for what values of k does the system 1.have exactly one solution? 2.have an in finite number of solution?
  26. Chemistry

    If you have 1911.9 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
  27. Chemistry

    What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.010 M CH3CO2Na? Assume the volumes of the solution are additive and that Ka = 1.8 x 10-5 for CH3CO2H. 4. How is this solved?
  28. Chemisty

    A solution contains 0.0653g of compound in 8.31g of ethanol. The molarity of the solution is 0.0368m. Calculate the molecular weight of the compound
  29. chem

    If a 30.00mL aliquot of a 0.15 M NH4Cl solution is added to 20.00mL of a 0.18 M NH4NO3 solution, what is the concentration of nitrate ion in the mixture?
  30. 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?
  31. algebra

    A lab assistant wants to make 5 liters of 27.2% acid solution. If solutions of 30% and 16% are in stock, how many liters of each must be mixed to prepare the solution?
  32. chemistry

    It takes 75 mL of 0.124 M KOH to neutralize 28.5 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in moles/liter.
  33. Chemistry

    75.0 mL of a 1.80 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 187 mL of water. What is the final concentration?
  34. chemistry

    10g of silver nitrate solution is added to 10g sodium chloride solution? what change in mass do you except after the reaction and why?
  35. chemisttry

    how many ml of a 1 M NaOH solution do you need to add to a 250 ml flask and bring it to volume with deionized water to make a 0.12 M NaOH solution
  36. Chemistry

    67.0 mL of a 1.50 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 163 mL of water. What is the final concentration?
  37. Chemistry

    I'm having trouble with molarity. What is the molarity of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100.0 mL?
  38. Chemistry 103

    To what volume should you dilute 50ml of a 13M stock HNO3 solution to obtain a 0.131M HNO3 solution?
  39. Chemistry

    49.0 mL of HClO3 is completely titrated by 68.4 mL of a Sr(OH)2 solution whose concentration is 0.3893 M. What is the molarity of the HClO3 solution? Sr(OH)2 + 2HClO3 = 2H2O + Sr(ClO3)2
  40. Science

    A solution made up of 20ml of mythl alcohol and 50ml of water. What is the volume percent of ethyl alcohol in solution.
  41. science

    Zinc chloride solution is poured into a solution of ammonium carbonate. need conventional, ionic and net ionic equations thanks
  42. Chemistry

    An aqueous solution containing 10.50 g of a compound in 100.0 ml of solution has an osmotic pressure of 0.0187 atm. at 25°C. What is the molecular weight of the compound?
  43. math

    A solution contains 100 mg/mL of a drug, and the recommended dose is 50 mg/lb once a day. How much solution would be needed for one dose to be administered to a 20kg patient?'
  44. Chemistry

    75.0 mL of a 1.80 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 187 mL of water. What is the final concentration?
  45. 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!
  46. chemistry

    If 5 g of solid sodium hydroxide is dissolved in 100 mL of water, what is the molarity of the solution in moles of NaOH/L of solution (moles/L)?
  47. applied chemistry

    A 50.0mL volume of AgNO3, solution contains 0.0285 mol AgNO3 (SILVER NITRATE). What is the molarity of the solution?
  48. chemistry

    A 60.0-g sample of NaOH is dissolved in water, and the solution is diluted to give a final volume of 1.50 L. The molarity of the final solution is ?
  49. Math

    Calculate the amount of fluorescein (MW 332.31) you will need to make 10 mL of 15 mM solution in ethanol (EtOH). My answer:0.05 g 2.Using Equation C1V1=C2V2 calculate the volume of stock solution (15 mM) you need to make 1 mL of each working solution
  50. Algebra

    1.Is the equation true false or open ? 9p+8=10p+7 A. Open; there is a variable B. True; the expression are the same for all values of the vaiables. False; the expression are never the same 2.Which is the solution of the equation 5-4x=-3? A.0 B.2 C.-3 D.1/4
  51. chem

    1.Pippete 20ml of 0.1M acetic acid and 20ml of 0.1M NaOH into a 100ml beaker (Remember that the final volume of this solution is the sum of the volumes of the acetic acid and NaOH solutions that have been mixed) 2. Pippete 20ml of 0.1 acetic acid into
  52. 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.
  53. Pharmacy math

    Calculate the amount of IV fluid to be added to the volume control chamber Ordered:D5 0.33% NaCl at 66 mL/hr with Fortaz 720 mg every 8 hours to be infused over 40 minutes by volume control set On hand:Fortaz 1g/10 mL
  54. Chemistry

    When 9.08 times 10^5 grams (one ton) of sodium chloride are electrolyzed in the commerical production of Chlorine, 5.24 times 10^5 grams of Chlorine are produced: 2 NaCl (aq) + 2 H2O (l) >>H2 (g) + Cl2 (g) + 2 NaOH (aq). Calculate the percentage
  55. Chemistry

    Calculate the mass of baking soda, NaHCO3, needed to neutralize 3.0 mL of 3.0 M hydrochloric acid, HCl(aq). Ok, so I'm super confused. I have the equation, but I'm stuck with what to do with it. Equation: NaHCO3 + HCL --> NaCl + H2O + CO2
  56. Chemistry

    When 9.08 times 10^5 grams (one ton) of sodium chloride are electrolyzed in the commerical production of Chlorine, 5.24 times 10^5 grams of Chlorine are produced: 2 NaCl (aq) + 2 H2O (l) >>H2 (g) + Cl2 (g) + 2 NaOH (aq). Calculate the percentage
  57. Chemistry

    What are the Oxidation and Reducation reactions for these equations : BaCl2 + NaHCO3 -> BaCO3 + NaCl + HCl (carbon is the reduction reaction, but I don't know what the oxidation reaction is) CaCO3 + HCl -> CaCl2 + CO2 + H2O
  58. chemistry

    A 12.42 gram sample of a mixture of NaCl and CaCl2 is dissolved in water and all the chloride is precipitated as AgCl. If the AgCl precipitate has a mass of 31.70 grams. How do I find the mass percentage of each component in the original mixture?
  59. chemistry

    Calculate the enthalpy of change, Delta H of rxn, for each of the reactions. record the values in the data table part 2 I calculated the heat of rxn of the HCl +NaOH------NaCl + H2O. How do i go from here to enthalpy of change
  60. Biology

    What happens when a substance dissolves in the watery solution outside of a cell and equilibrium is disrupted. a. Water from the cell will move into the solution b. water from the solution will move into the cell c. the pores in the cell membrane will
  61. Chemistry

    What will be the pH of: (a)10.0cm3 of an aqueous solution of 0.001mol dm^-3 nitric aicd, HNO3 (aq)? (b)100cm3 of an aqueous solution of 0.001mol dm^-3 nitric aicd, HNO3 (aq)? (c)0.02mol dm^-3 of potassium hydroxide solution, KOH (aq)? For (a) I got 2, (b)
  62. Chemistry

    Write the following into a balanced equation. a) When a mixture of copper (II) oxide and carbon is heated, elemental copper forms and carbon monoxide evolves into the atmosphere. b) When a concentrated solution of sodium hydroxide is added to an aqueous
  63. Chemistry

    Which of the following results from the presence of a solute in a given solvent? A. The vapor pressure of the solution is lower than that of the pure solvent. B. The boiling point of the solution is lower than that of the pure solvent. C. The freezing
  64. Science

    When we evaporate a salt solution salt crystals are left in the beaker or utensil but does the same thing happen in case of sugar solution?
  65. Chemistry

    A 327- ML sample of unknown HCI solution reacts completely with Na2CO3 to form 20.1 g CO2 What was the concentration of the HCI solution?
  66. Chemistry

    What formula do I use to figure. 16.5 g of KCL (MM=74.55 g/mol) is dissolved in enough water to make 575 mL of solution. Calculate the molarity of the KCl solution.
  67. Chemistry

    Suppose that 10.9 mL of HNO3 is neutralized by 83.9 mL of a 0.0021 < solution of KOH in a titration. Calculate the concentration of the HNO3 solution. Answer in units of M
  68. chemistry

    A sample of solid ammonia chloride NH4Cl, is dissolved in water...the solution found is acidic...explain why the solution is acidic?
  69. chemistry

    In a solution of Fe²+ and Aluminum immersed in a solution of Al³+ knowing that aluminum is more reactive than iron, what metal form the anode?
  70. AP Chem

    It takes 58 mL of 0.124 M KOH to neutralize 34.5 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in unites of moles/liter.
  71. Chemistry

    A 495-mL sample of unknown HCl solution reacts completely with Na2CO3 to form 18.1g CO2. What was the concentration of the HCl solution?
  72. solution making/ chemistry/biotech

    You have 750ml's of a solution that was originally made up using a 20X stock. How much stock was used? I think the answer is 37.5 by dividing 750/20 but I am not sure
  73. Chemistry

    What is the concentration of an acetic acid solution if 11.2 mL of 1.002 Molarity sodium hydroxide solution is needed to completely neutralize 5.1 mL of the acid?
  74. Chemistry

    Suppose that 10.9 mL of HNO3 is neutralized by 83.9 mL of a 0.0021 < solution of KOH in a titration. Calculate the concentration of the HNO3 solution. Answer in units of M
  75. chemistry

    When making pepsin in acetic acid, can I apply heat to the solution? What is the appearance of the pepsin solution should be? I'm not sure if it has to be really transparent, I know that it looks kinda yellow.
  76. chemistry

    When making pepsin in acetic acid, can I apply heat to the solution? What is the appearance of the pepsin solution should be? I'm not sure if it has to be really transparent, I know that it looks kinda yellow.
  77. Chemistry

    A student needs 0.14 mol of sodium sulphate to do an analysis. the concentration of the available solution is 2.6 m/L. What volume of the solution should the student measure out? What I've tried: C=N/V V=C/N V=2.6/0.14 V=18.6 The answer in the textbook
  78. Chemistry

    the hydronium ion concentration of a 0.050 M solution of a weak acid is 5.9 X 10^-3 M. the acid-dissociation constant is 1.37 X 10^-4 at 25 celsius. what is the pH of this solution? A. 0.077 B. 1.30 C. 2.23 D. 3.86 E. 5.13
  79. chemistry

    A) If you make up a solution of 50 mL of 0.1 M TRIS in the acid form, what will be the pH? (pka of TRIS: 8.3, molecular wt: 121.1 g) B) if you add 2mL of 1 M NaOH to the solution, what will be the pH? Thank you.
  80. chemistry

    A buffer solution was prepared by mixing 442 mL of 0.181 M NaOCl and 139 mL of 0.421 M HOCl. Calculate the pH of the solution given that Ka (HOCl) is 3.2 x 10-8.
  81. AP Chem

    Determine the amount of a precipitate produced when 10mL of a 0.1M silver nitrate solution is mixed with 10mL of a 0.1M calcium chloride solution.
  82. Chemistry

    It takes 56 mL of 0.124 M KOH to neutralize 45.4 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in units of moles/liter
  83. solution making/ chemistry/biotech

    You have 750ml's of a solution that was originally made up using a 20X stock. How much stock was used? I think the answer is 3.75 by dividing 750/20 but I am not sure
  84. Chemistry

    If 17.0 g of sodium chloride are dissolved in water to make 0.5 L of solution, then what is the final concentration of the solution? Answer 0.6 mol L I don't get this. I know that 1 mol / 22.4 L
  85. Chemistry

    Hard ball candy is prepared from boiling an aqueous sugar solution that has a boiling point of 260.°F. What is the molality of this solution?
  86. chemistry

    A 337-\rm mL sample of unknown \rm HCl solution reacts completely with \rm Na_2CO_3 to form 17.1g \rm CO_2. What was the concentration of the \rm HCl solution?
  87. Chemistry

    A solution was prepared in which 12.0 g of glycerin was dissolved in 80.0 g of water. The freezing point of the solution was -3.03 °C. Use this information to determine the molar mass of glycerin.
  88. algebra

    a scientist has a 25% acid solution.how many liters of each does the scientist need to make 15L of a solution that is 28%.write a system of equations and solve using any method.
  89. Chemistry

    What is the pH of the resulting solution when 25.0mL of 0.100 HNO3(aq)are reacted with 20.0 mL of 0.175M NaOH(aq)? Is the resulting solution acidic or basic in nature?
  90. Chemistry

    How many milliliters of a 0.20 M of glucose (C6H12O6) solution are needed to provide a total of 25.0 g. of glucose? Molarity(M)= Moles of Solute/Liters of Solution
  91. Algebra

    Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. 1/2 x - 2y = 4 and 4y - x = -8
  92. Chemistry

    A current of 96.5 amperes is passed for 18 minutes between nickel electrodes in 500 ml solution of 0.2M nickel nitrate.the molarity of solution after electrolysis is
  93. Chemistry

    Suppose you wanted to dissolve 106g of Na2CO3 in enough H2O to make 6.00 L of solution. A. What is the molar mass of Na2CO3? B. What is the morality of this solution?
  94. science

    A solution is prepared by mixing 100.0 mL of 0.0500 M AgNO3 with 75.0 mL of 0.0500 M CaCl2. What is the equilibrium concentration of Ag+ in solution? Ksp for AgCl is 1.6 x 10^-10
  95. Chemistry

    78 mL of a 1.60M solution is diluted to a volume of a 238mL. A 119-mL portion of that solution is diluted using 133 mL of water. What is the final concentration
  96. Chemistry

    Calculate the pH of the resulting solution if 50 cm3 of 0.045mol dm-3 solution of C5H5N is mixed with 100 cm3 of 0.035 mol dm-3 of C5H5NH+
  97. 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
  98. chemistry

    Describe in detail, the steps a student needs to carry out to accurately obtain a 500 ml solution of .100 M HNO3 from a solution of 1M HNO3
  99. college gen chem

    A quantity of 16.13 mL of a KOH solution is needed to neutralize 0.4883 g of KHP. What is the concentration (in molarity) of the KOH solution?
  100. Chemistry

    A solution is prepared by diluting 65.0 mL of 0.175 M methylamine, CH3NH2, to a total volume of 225 mL. Calculate the pH of the diluted solution. Kb (CH3NH2) = 4.40 x 10-4