a density of 1.0 M solution of NaCL

29,852 results, page 75
  1. Chemistry

    An aqueous salt solution is formed by adding 11.67 g sodium sulfate (solute) to water (solvent). What mass (in g) of water is used if the freezing point of the solution is -12.9 Farenheit. Kf H2O = 1.86 Celsius/m
  2. chemistry

    A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 450 mL of a solution that has a concentration of Na+ ions of 0.700 M
  3. Math

    How do you know whether a system of equations has no solution, one solution, ormany solutions? How can you identify whether a system is consistent or inconsistent???? Please Help me!!!! Thanks so much! I believe it is consistant if there is onlii one
  4. Chemistry

    A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 400mL of a solution that has a concentration of Na+ ions of 1.10M ?
  5. please help!!

    If a solution containing 33.82 g of mercury(II) acetate is allowed to react completely with a solution containing 9.718 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after the
  6. Chemistry

    A buffer is made by mixing 100 mL of 0.25 M acetic acid (CH3COOH) and 150 mL of 0.10 M sodium acetate (CH3COONa). Calculate the pH of the solution after 0.5g of solid NaOH is added to the solution (Given Ka (CH3COOH) =1.8 x 10-5)
  7. Chemistry

    The electrolysis of 250ml of a brine solution was carried out for a period of 20mins with a current of 2A. The resulting solution was titrated with 0.62M HCL. How many ml of HCL would be required to achieve natural point
  8. Chemistry

    How to find the mass of a solid formed when: 45.00ml solution of 0.003 800 mol/L lead (II) nitrate is mine dish a 30.00 mL solution of 0.08800 mol/L strontium iodide
  9. Chemistry

    What type of reaction occurs when potassiumbromide solution is mixed. With lead(II) acetate solution? Gas evolution, oxidation reduction, precipitation, acid-base neutralization, or no reaction
  10. chemistry

    A solution contains 0.20 M Cl- and 0.20 M SO4^2-. a) identify a cation that could be added to the solution to give a precipitate with only one of these anions. MY answer: Cu+ b) write the net ionic equation for the precipitation reaction in part a) MY
  11. Math

    Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
  12. Chemistry help pliz

    Explain (using equations) how a solution of 1.0 mol dm^-3 in both CH3COOH and CH3COONa is resistant to changes n pH when we add either small amounts of acid or small amount of base (such solution is called a buffer)
  13. Chemistry

    What is the concentration of methanol in a solution prepared by combining 7.85mL of a 3.693M methanol solution with 17.50mL of water? Assume volumes are additive and report your answer to 3 decimal places.
  14. AP Chemistry

    A 2.685 g sample of KHC8H4O4 was dissolved in water and uses to standardize a NaOH solution. The endpoint was reached after 38.25mL of titrant were delivered. Find the molar concentration of the NaOH solution.
  15. Chemistry

    My brain refuses to wrap around titration. Problem: Given 150.0 mL of a 1.05 M HCl solution, how many milliliters of a 2.50 M Al(OH)3 solution are required to neutralize the HCl? I think the balanced formula is 3HCl + Al(OH)3 - AlCl +3H20 but that's as far
  16. Chemistry

    I am really stuck on these 2 questions: 1. Why was 2M HNO3 added before adding 0.05M AgN03? 2.Write a full equation b.) an ionic equation between silver nitrate solution and sodium chloride solution.
  17. Chemistry

    How many grams of glycerin C3H8O3 must be dissolved in 375.9g of water at 100 degrees Celsius to reduce the pressure of water above the solution to 714.6mmHg. The solution is a non-volatile compound
  18. chemistry

    You add thiocynanate ions to a solution The molarity of silver ion is 0.1M initially. Calculate the max concentration of SCN- ion that exists in the solution before AgSCN beings to precipitate? ?
  19. chemistry

    The pH of 100 mL of a 0.10 M aqueous solution of Compound Z is 11.30. (a) Is Z an acid, a base, neither, or cannot be determined? Justify your choice. (b) Write the relevant Bronsted-Lowry equation showing how Z behaves in aqueous solution
  20. chemistry

    Moles chemistry? Calculate the mass of solute required to prepare ib the solution 200cm^3 of solution containig 0.50 mol dm ^-3 cl-iond prepared by dissolving cacl2.6h2o in water.
  21. chemistry

    A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 500 mL of a solution that has a concentration of Na+ ions of 0.700 M
  22. Math

    Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
  23. Math

    Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
  24. Chemistry

    I have these two questions on my section review that I don't know how to answer. Can someone help me? Please and thank you. 3. Describe in your own words how to prepare 100 mL of a .85 M solution of sodium chloride. 4. If you dissolve 2.00 mol KI in 1.00 L
  25. CHM 152

    The freezing point of an aqueous solution of glucose was measured to be -1.52 oC. What is the osmotic pressure, in atm, of 100 mL of this solution at 25.0 oC? (Kf = 1.86 oC/m) When I calculated it out I got 16.79 atm but the answer was wrong don't know
  26. MATH

    I have about 30 questions of this, so I need to understand the process. Please make it as detailed as possible! Thank you! Q: To reduce 32 grams of a 25% solution of antiseptic to a 10% solution, how much distilled water should a pharmacist add? A:
  27. Chemistry

    A buffer solution contains HC2H3O2 at a concentration of 0.225 M NaC2H3O at a concentration of 0.164 M. The value of Ka for acetic acid is 1.75 × 10-5. Calculate the pH of this solution using the Henderson-Hasselbalch equation. Could you please show
  28. chemistry

    A scientist wants to make a solution of tribasic sodium phosphate, \rm Na_3PO_4, for a laboratory experiment. How many grams of \rm Na_3PO_4 will be needed to produce 250 mL of a solution that has a concentration of \rm Na^+ ions of 0.600 \it M?
  29. chemistry please help!!

    A 0.2mol/L solution of KMnO4 has been added to 10 ml of 0.5mol/L acidified FeSO4. write the balance equation of the reacttion then calculate the volume of the oxidizing solution that should be added to oxidize all the Fe^2+ ions. please help and thank
  30. chemistry

    1.)How many grams would you need of a sample known to be 99.81% AgN03 by mass? You are asked to prepare 150.0 mL of 3.15×10−2 M AgNO3. 2.) An aqueous solution is 6.40% methanol CH3OH by mass, with d = 0.988 g/mL} What is the molarity of CH3OHOH} in
  31. chemistry

    1.)How many grams would you need of a sample known to be 99.81% AgN03 by mass? You are asked to prepare 150.0 mL of 3.15×10−2 M AgNO3. 2.) An aqueous solution is 6.40% methanol CH3OH by mass, with d = 0.988 g/mL} What is the molarity of CH3OHOH} in
  32. Chemistry- dilution

    51.0 mL of a 1.20 M solution is diluted to a total volume of 248 mL. A 124-mL portion of that solution is diluted by adding 125 mL of water. What is the final concentration? Assume the volumes are additive.
  33. Math

    Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
  34. Chemistry

    A volume of 60.0mL of aqueous potassium hydroxide (KOH ) was titrated against a standard solution of sulfuric acid (H 2 SO 4 ). What was the molarity of the KOH solution if 25.7mL of 1.50 M H 2 SO 4 was needed? The equation is 2KOH(aq)+H 2 SO 4 (aq)¨K 2
  35. Math

    The density, d, of an object is given by the following formula, where m represents the mass of the object and V represents the volume of the object. Heather was asked to find the density of a brick given the mass in kilograms and the dimensions of the
  36. Chemistry

    The capacity of a large irregularly shaped vessel cannot be computed from geometric data. As a result, it is decided that the volume be established from analytical data. The vessel is filled to its capacity mark with calcium-free water. A known small
  37. chem help w/ Lab

    Weight of the mustard package Sample: 3.02 (g) Weight of the mustard package Solution: 33.3 (g) Trial #1 Trial #2 Trial #3 Weight of Mustard Package Solution Delivered (g) : 1.09 .948 .909 Weight of NaOH Solution Delivered (g) : .354 .304 .269
  38. probability

    3)If the random variable T is the time to failure of a commercial product and the values of its probability density and distribution function at time "t" are f(t) and F(t), then its failure rate at time t is given by f(t) / 1-F(t) Thus, the failure rate at
  39. Algebra

    A Chemist needs 200 liters of 30% acid solution. she has a 20% and 50% acid solution. How much of each must she mix?
  40. chemistry

    To what volume should you dilute 126 ml of an 7.90 M CuCl2 solution so that 49.5 ml of the diluted solution contains 5.9 g CuCl2?
  41. Chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
  42. Math

    The following equation has a positive and a negative solution. z-1/z+1 = 2/z+4 I need to find the positive solution, any ideas please?
  43. 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
  44. Chemistry

    To what volume should you dilute 124 mL of an 8.10 M CuCl2 solution so that 52.0 mL of the diluted solution contains 5.9 g CuCl2
  45. linear systems

    for what values of k does the linear system below have: a) infinite solutions? b) one solution? c) no solution? 2/3x+y=16 kx+3y=48
  46. chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
  47. chemistry

    How many gallons of distilled water must be mixed with 50 gallons of a 30% alchohol solution to get a 25% solution?
  48. science

    a solution is 40% in NAOH. calculate the mole fraction of NAOH if it is an aqoues solution
  49. Math

    I have a graph which is graphed by the equation f(x) = |x| - 4 and I'm asked to find the solution to the equation f(x) = 0. What would the solution be?
  50. 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?
  51. Chemistry

    Calculate the pH of a solution that is 0.124 M C2H5NH2 and 0.124 M C2H5NH3Cl. (Assume that the solution is at 25°C.)
  52. Chemistry

    A student prepares a 0.28 M solution of acetic acid. If the Ka of the acid is 1.76 x 10^-5, then what is the pH of the solution? 4.76 0.55 5.31 2.65 I got 2.65 as my answer. :)
  53. 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
  54. chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
  55. chemistry

    a solution that has an absorbance of 0.603 is diluted ten fold. What is the absorbance of this solution now?
  56. chemistry

    4) An aqueous solution is 1.65 m glucose. What are the boiling point and freezing point of this solution?
  57. chemistry

    You have a solution of 12.0 M HCl. You need 36.5 g of hydrochloric acid for a reaction in your chemistry lab. How many mL of solution must you use?
  58. Chemistry

    If you have 200ml of 25% aqueous solution of ethanol, what volume of ethanol and water are in the solution?
  59. Chemestry

    IF 121ml of a 1.0 M glucose solution is diluted to 500.0 mL, what is the molarity of the diluted solution?
  60. organic chemistry

    If you are given a 6.75% (wt./vol.) NaOCl solution, how many grams of NaOCl are in 100 mL of the solution? how do you do this please???
  61. Chemistry

    We are using a rotovap to evaporate Hexane from a solution. The temperature of the solution has to remain between 20 to 25 F. What the mm Hg has to be for Hexane?
  62. math

    how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution?
  63. science

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
  64. algebra

    How much water should be added to 20oz of a 15% solution of alcohol to dilute it to s 10% alcohol solution?
  65. Science

    6.02 molecules of urea are present in100 ml of its solution . The concentration of urea solution is
  66. math

    how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution?
  67. math

    how many liters of water must be added to 30 liters of a 20% alcohol solution to dilute it to a 15% solution?
  68. Algebra 1

    Solve each system using substitution. tell whether the system has one solution, infinitely many solutions, or no Solution. 1.) y=2x -1 2x +2y= 22
  69. Chemistry

    What is the pH of a solution made by mixing 1.40 mL of 0.0043 molar Sr(OH)2 with 8.90 mL of 0.0029 molar Sr(OH)2 solution?
  70. Chemistry

    If 15.0ml of a 6.0M HCl solution is diluted to 75.00ml, what is the molarity of the diluted solution?
  71. 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?
  72. 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?
  73. Math

    How many liters of water should be added to 20 liters of 40% solution of acid to obtain 30% solution?
  74. algebra

    What would the concentration be if we mixed 200 of 10% sugar solution and 300 of 20% sugar solution ?
  75. chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
  76. mes

    a solution of sugar in water is 5% by mass. how much sugar is present in 250 gm. of solution?
  77. chemistry

    if 200.0 ml of 0.800 m is prepared from a 70.0 ml stock solution, what is the molarity of stock solution
  78. Algebra

    A chemist has 40 ml of a solution that is 50% acid. How much water should be added to make a solution that is 10% acid?
  79. chemistry

    how do you calculate the molaarity of a water solution of CaCl2, given that 5.04 L of the solution contains 612 g of CaCl2.
  80. chemistry

    what are the steps for making 0.5 aqueous solution of MgCl2? What are the necessary steps to make this solution?
  81. Chemistry

    1. What does adding a salt like KCL do to the pH of a solution? 2. What does adding a base like KOH do to the pH of a solution
  82. Chemistry

    Prepare a 0.025M solution of Glucose by diluting a 1M Glucose solution. What and how much did you mix together?
  83. Chemistry

    A solution contains 0.00245 M HCl. Determine the [H3O+] for the solution. points Determine the [OH-]
  84. Chemistry

    A 35 mL solution of HCl, reacts completely with 20 mL of 0.25 M KBr. What is the molarity of the HCl solution?
  85. Algebra

    Chemist has 60 g of solution that is 70% acid. How much water should be added to make a solution that is 40% acid?
  86. chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
  87. help with math!!!!

    Solve each system using substitution. Tell whether the system has one solution, infinitely many solutions, or no solution. 13. -x + y = -13 3x - 1 = 19 15. 1/3y= 7/3 x + 5/3 x - 3y = 5 17. 3x + y = -13 -2x + 5y = -54
  88. chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
  89. Science

    What volume of a 2.00 M HCL solution can be prepared by diluting 0.350L of 14.0 M HCl solution?
  90. Chemistry

    When investigating heat of solution of NaoH& NH4No3, what is the heat of solution of the two cpds?
  91. chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
  92. 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?
  93. Chemistry

    NaHCO3 + HCl = NaCl + H2O + CO2 The HCl in the reaction is 2 molar what i need it to figure out how much CO2 if produced when 10g of each substance is mixed. And the limmiting reagent and any information that can be produced around the ammount of CO2
  94. chemistry

    The boiling point of water at 735 mmHg is 99.07C. What percent by mass of NaCl should be present in a water soln to raise the boiling point to 100.0C? [Kb for water is 0.512 C kg solvent (mol solute )-1]
  95. Chemistry

    Question: of the salts, NaC2H302, NaCN, NaCl, and NH4NO3, how many form neutral aqueous solutions? How do you determine which are neutral and which do not form neutral solutions?
  96. Chemistry (PLZ HELP)

    1. Outline a procedure to prepare an ammonia/ammonium buffer solution. I'm confused how to start it off. This is an outline of how the steps should be: Step One - Calculate the concentration of hydronium ions in the solution that requires buffering. You
  97. chemistry

    was hoping someone can help me check if these answers make sense for a silver copper alloy lab. 3. Why don’t you have to weigh the sodium chloride on a sensitive balance? This one I am not sure about, It is because an excess of NaCl is needed to make
  98. chemistry

    A 1M solution (200ml) of NH3 (Kb of ammonia=1.8*10-5) is added to 200ml of 0.5M HCl. Calculate: a) the resulting pH? b) The delta ph due to addition of 15ml of 1M HNO3 to solution obtained in part a c) I am stuck on this: The delta ph due to addition of
  99. chemistry

    I have no idea how to solve this problem, please help me out.... thanks a) A liter of a solution saturated at 25degree with calcium oxalate, CaC2O4, is evaporated to dryness, giving a 0.0061gm residue of CaC2O4. calculate the concentrations of the ions,
  100. Homework Help: Solar Energy Please HelpASAP

    d) In the up-convertor 1, two photons are converted into one photon with 100% conversion efficiency. If all photons with energy above that of the band gap of a-SiC:H are absorbed in the a-SiC:H layer, in which spectral range can the photons be up-converted