1. Chemistry

    To make a 5.0L solution that is 38.8% NaCl by weight in water. How much salt should you add to the 5.0L to prepare?
  2. chemistry

    A 2.500×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.3mL . The
  3. chemistry

    A 2.500×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.3mL . The
  4. Chemistry

    If the same solute is dissolved in two different solvents to the same concentration and the same temperature, the osmotic pressure ____ My answer & reason: solution A has a smaller molecular weight and therefore, a larger Molarity and higher osmotic
  5. chemistry

    what volume of physiological saline solution (0.90% by weight NaCl, in water) would give you a gram of salt when evaporated?
  6. organic chemistry

    What volume of physiological saline solution (90% by weight NaCl, in water) would give you a gram of salt when evaporated?
  7. Physical Science Please Help!

    Table salt, sodium chloride, has the formula NaCl. A weight of 58.44 grams of table salt contains 1.0 mole of NaCl molecules. How many moles of NaCl are contained in 29.22 grams of NaCl?
  8. Chemistry

    An unknown salt is either NaF, NaCl or NaOCl when 0.050 moles of the salt is dissolved in water to form 0.500 L of solution, the pH of the solution is 8.08? is the solution NaF, NaCl, or NaOCl, I think its NaF?
  9. chemistry

    A pan full of hot salt water, NaCl(aq), is cooled and NaCl(s) precipitates. Explain why this happens. Chloride ions are more strongly attracted to the metal in the pan than the sodium ions at low temperatures. As the vapor pressure of the solution
  10. Chemistry

    1. As a research chimst, you are intrested in studying the extent and type of interactions in aqueous salt solution. As part of this study, you weight three samples of NaCl and dissolve each in 1.000kg H2O. You then measure the freezing temp. of each
  11. chemistry

    What is the molarity of a salt solution in which 117.0 grams of salt (NaCl) is dissolved in water to give 5.00 L of solution? Show all work including units.
  12. Physiology

    Suppose a salt and a glucose solution are separated by a membrane that is permeable to water but not to the solutes. The NaCl solution has a concentration of 1.95 g per 250 mL (molecular weight = 58.5). The glucose solution has a concentration of 9.0 g per
  13. science

    compare table salt with glucose table salt is a strong electrolyte that will completely dissolve in a solution. whereas, glucose is a weak electrolyte and won't dissolve in a solution. ex. NaCl in water makes Na+ and Cl- ions glucose in water is basically
  14. Chemistry

    A metal, M, of atomic weight 96 u reacts with fluorine to form a salt that can be represented as MFx. In order to determine x and therefore the formula of the salt, a boiling point elevation experiment is performed. A 10.9 g sample of the salt is dissolved
  15. Chemistry

    How many grams of NaCl should be added to 1 L of water to make an isotonic solution? (molecular weight of NaCl= 58.5) Can someone please explain to me why the answer is 9 grams.
  16. Chemistry

    When sodium chloride, NaCl, is added to water, it forms a solution. Rank the steps involved in the dissolution of salt in water from first step to last step. To rank items as equivalent, overlap them. a.) NaCl crystal is added to water b.) NaCl solution
  17. chemistry lab

    Why do we have to weight the beaker with salt and water before dissolving the Nacl ? why is it incorrect to weight it after we dissolve it
  18. chemisrty

    Q4) Suppose you prepare 950 mL of a solution by dissolving 100 grams of NaCl in 900 mL of water. Assuming the density of pure water to be 1 g/mL, answer the following questions with regards to this solution: a) What is the mass percent of water in this
  19. Chemistry

    Explain how you woud make 200.0 g of a .900 percent by mass solution of salt (NaCl in water)
  20. Chemistry

    What mass of salt(NaCl)should you add to 1.20 L of water in an ice cream maker to make a solution that freezes at -10.4∘C?
  21. Chemistry

    What mass of salt(NaCl)should you add to 1.20 L of water in an ice cream maker to make a solution that freezes at -10.4∘C?
  22. Chemistry

    You are given a bottle of dry NaCl. Explain the procedures required to make 900mL of a 0.5M NaCl solution. The formula weight of NaCl is 58.4g/mole.
  23. chemistry

    As a research chimst, you are intrested in studying the extent and type of interactions in aqueous salt solution. As part of this study, you weight three samples of NaCl and dissolve each in 1.000kg H2O. You then measure the freezing temp. of each solution
  24. Math

    How would you go about making 250ml of a 20X stock solution of NaCl to dilute later to a final concentration of 50mM? I know that the molecular weight of NaCl is 58.44 but I am not sure where to start. I need to figure out the amount of NaCl and water
  25. Math(Please help) Thank you

    How would you go about making 250ml of a 20X stock solution of NaCl to dilute later to a final concentration of 50mM? I know that the molecular weight of NaCl is 58.44 but I am not sure where to start. I need to figure out the amount of NaCl and water
  26. Biology

    6. Describe and explain what would happen to a cell containing 100mM NaCl, 150 mM glucose, and 100 mM protein if placed into: a) distilled water? (describe the volume change if the cell were permeable to water only). b) a solution of 100mM NaCl, IF the
  27. Chemistry

    How might one separate a mixture of water and salt? A solution of water and salt may be separated, if you don't want the water, by allowing the water to evaporate which will leave the salt crystals behind. If you want the water AND the salt, you may
  28. Chemistry

    Is dissolving salt in water an example of reversible? I don't think so because once salt is in water, the water is not clear anymore. Pls help. thanks. Yes, it is reversible. One ca physically separate the salt and water (evaporation) What do you mean by
  29. Chemistry

    1. Calculate the MOLALITY (m=mol/kg) of the salt water solution. Note: Include the mass of ice AND volume of water when calculating the TOTAL MASS of the solvent (water). (1ml of water=1g of water. Is my work correct? So what I did was, Knowing m=mol/kg
  30. soran university

    1. Which salt is LEAST soluble at 0 ºC? 2. How many grams of sodium nitrate, NaNO3, are soluble in 100 g of water at 10 ºC? 3. When 50 grams of potassium chloride, KCl, is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described
  31. math

    You are a lab technician and must create 250 ml of a 17% salt-solution. a. If you have 500 ml of 28% salt-solution, how many milliliters of it should you mix with water in order to create 250 ml of a 17% salt-solution? b. If you have 400 ml of 40%
  32. Calc

    You are a lab technician and must create 250 ml of a 17% salt-solution. a. If you have 500 ml of 28% salt-solution, how many milliliters of it should you mix with water in order to create 250 ml of a 17% salt-solution? b. If you have 400 ml of 40%
  33. Chemistry

    an unknown salt is either NaCN,NaC2H3O2, NaF, NaCl, or NaOCl. when 0.100 molar of the salt is dissolved in 1.00 L of solution, the ph of the solution is 8.07. what is the identity of the salt? where do I start? How do I solve it, cuz im not gettign right
  34. Chemistry

    Describe how you would prepare 250.0 mL of a 0.1500 M NaCl solution given that the NaCl is supplied as a solid. Describe how you would prepare 1.25 L of a 0.025 M sucrose solution from a stock solution with concentration of 5.00 M. What is the benefit of
  35. science

    a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl.
  36. science

    a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl.
  37. Science

    If I want to make a solution that has a 5% concentration of salt, is it correct for me to have 380mL water and 20g salt? My method behind this was that I wanted a 400g solution, and so since 1mL water is equal to 1g water, I did: 400x0.95=380g water or
  38. college chemistry

    a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl.
  39. Chemistry

    In each of the following, determine how much solute (in g or mL) must be added to the correct quantity of water to make the given amount of solution at the correct concentration. a)KI to make 50.0mL of a 0.50 M solutioon b)12.0 M HCL to make 500 mL of a
  40. Chemestry

    How many grams of NaCl would you need to make 500 ml of a 100 mM solution? the atomic weight of NaCl is 35. I was not given a way to solve this by my teacher.
  41. science

    Erin must perform a science experiment. She needs to dissolve 10 g of salt in 250 ml of water. She measures the water incorrectly and dissolves the 10 g of salt in 350 ml of water. Now she has no more salt. Explain what Erin can do to make the solution
  42. chemistry

    Need to write a brief description of the procedure required to make 900mL of a 0.5 M NaCl solution. The formula weight of NaCl is 58.4g/mole.
  43. Biology

    Need to write a brief description of the procedure required to make 900mL of a 0.5 M NaCl solution. The formula weight of NaCl is 58.4g/mole.
  44. Chemistry

    A solution is made by dissolving 0.100 mol of NaCl in 5.35 mol of water. What is the mass % of NaCl? So far, I have determined molecular weight of NaCl (58.44 g/mol) multiplied by 0.100 mol = 5.844g NaCl, and mw of H2O (18 g/mol) = 96g H20. I thought mass
  45. Chemistry

    In a lab we are doing, we need to find the theoreical amount of NaCl that we should have left after evaporating the water off an NaCl solution. our molarity of the solution was .100 +/- .6%. We made a stock solution of .5836 g of NaCl/ 100 mL of water. We
  46. math

    Julia is a chemistry student. She is working on an experiment for which she needs 10 liters of a 20% salt solution. All she has in her lab are a 10% salt solution and a 40% salt solution. She decides to mix these to make her own 20% solution. How much of
  47. Chemistry

    Explain the following observations using chem principles: When table salt and sugar are dissolved in water, it is observed that: 1. Both solutions have a higher boiling point than pure water. 2. the boiling point of .1 M NaCl solution is higher than that
  48. chemistry

    how can I find the Liters of solution. the solution is salt (NaCl) mixed in water (H20) ?
  49. Chemistry

    The problem states, 'A student wants to determine how long it takes to dissolve 51.3 g of common table salt (sodium chloride) in 1L of water by monitoring the solution. It takes 26.7 seconds for the salt to completely dissolve. Determine the rate of
  50. CHEM LAB

    Why must you weigh the beaker containing salt and water before dissolving the salt? Why would it be incorrect/inaccurate to obtain the total mass after dissolving the salt? Explain your answer. (We had to do to create different nacl salt concentration )
  51. chemistry

    find the molality of a salt-water solution containing 0.27 mol NaCl in 150 g water.
  52. CHEM

    In the preparation of a rock salt solution, 1.522 grams of impure rock salt was dissolved in 50.0 ml of distilled water. The total mass of the solution was found to be 51.522 grams. Calculate the weight percent of impure rock salt in the prepared solution.
  53. Material balance

    A dilute salt solution containing 6% salt is fed to an evaporator at rate of 10000 kg/h for a trail run. crystals formed along with the saturated solution adhering with them are sent to a centrifuge for the recovery of the solution. 60% of the adhering
  54. College Algebra

    Please, I need your help!How much water must be evaporated from 16oz of a 2% salt solution to make a 4% salt solution?
  55. Chemistry

    The drug is a salt form while a molecular weight of 181.6G/mol. She needs a concentration of the stock solution of 100mM and she needs to make 1.2mL of the drug. How many grams will she need to weight out in order to make the stock solution?
  56. Chemistry

    A metal, , of atomic weight 96 reacts with fluorine to form a salt that can be represented as . In order to determine and therefore the formula of the salt, a boiling point elevation experiment is performed. A 9.18- sample of the salt is dissolved in 100.0
  57. Chemistry

    A metal, , of atomic weight 96 reacts with fluorine to form a salt that can be represented as . In order to determine and therefore the formula of the salt, a boiling point elevation experiment is performed. A 9.18- sample of the salt is dissolved in 100.0
  58. science

    Does water with salt boils faster than plain water Yes, salt increases the waters boiling point and therefore a higher temperature is needed for the water to boil. Salt does, indeed, increase the boiling point of water due to the salt but it will take
  59. calculus

    A research chemist has two different salt water solutions. Solution 1 is 25% salt and solution 2 is 20% salt. She wants to have 1 liter of 22% solution. How much of each solution should she mix together to get the desired solution?
  60. Chemistry

    Weight of the Rock Salt Sample: .343 (g) Weight of the Rock Salt Solution: 9.910 (g) Trial #1 Trial #2 Trial #3 Weight of Rock Salt Solution Delivered (g) : .89 1.17 .786 Weight of AgNO3 Solution Delivered (g) : 1.53 .548 .786 Concentration of AgNO3 :
  61. Chemistry

    How much distilled water must be added to .85% solution Of NaCL to make a 70% solution of NaCl
  62. chemistry

    A solution is prepared by dissolving 10.00g of a monobasic salt in a total volume of 1.00litres. Th pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the molecular
  63. chemistry

    A solution is prepared by dissolving 10.00g of a monobasic salt in a total volume of 1.00litres. Th pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the molecular
  64. Chemistry

    A rock salt NaCl ice and water mixture is used to cool milk and cream to make homemade ice cream. How many grams of rock salt must be added to water to lower the freezing point 10.0C?
  65. chemistry......plz help

    A solution is prepared by dissolving 10.00g of a monobasic salt in a total volume of 1.00litres. Th pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the molecular
  66. DON VASCO PATNA

    A salt solution of 15 litres contains 20% salt.How much water must you add to salt solution in order to dilute it 15% salt?
  67. chemistry

    A solution is prepared by dissolving 10.00 grams of a monobasic salt in a total volume of 1.00 litres. The pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the
  68. ChemII

    A saline solution is 0.9% NaCl. What masses of NaCl and water would be required to prepare 50. L of this saline solution? Assume that the density of water is 1.000g/mL and that the NaCl does not add to the volume of the solution.
  69. Chemistry

    How many grams of Na-benzoate (powder) do I need to prepare a buffer with pH = 4.2? How many grams of salt (NaCl) do I need to add to this buffer to make it a saturated solution of the salt? Thanks
  70. Molarity

    Find the molarity of a salt water solution containing 0.27 mol NaCl in 150g of H2O. My work: 0.27 mol NaCl/150 g x 1000g/1kg = 1.8 M is this correct, i wasn't really sure what to do...
  71. CHEMISTRY

    1. Not sure of how to do the calculations... Make a 0.200 m solution of NaCl in a 100. mL volumetric flask. ... Solution A's question or statement is the same but with M (molarity) Is this right? The small m means molality. If it were changed to capital M,
  72. Chemistry

    1. Not sure of how to do the calculations... Make a 0.200 m solution of NaCl in a 100. mL volumetric flask. ... Solution A's question or statement is the same but with M (molarity) Is this right? The small m means molality. If it were changed to capital M,
  73. chemistry

    a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl. whats wrong 25 g NaCl 1.0 L solution 1.0 g/mL 25
  74. Chemistry

    How many grams of NaCl would be required to make a 24% NaCl solution if 250 ml of water were used
  75. science(chemistry)

    1) the weight of water in 1litre of 2M nacl solution of density 1.117g/ml. 2)there are two common oxides of sulphur one of which contains 50percent oxygen by weight the other almost 60 percent.the weight of sulphur which combine with 1g o2 are in ratio
  76. chem

    which of the following are mixtures? 1. air (mostly n2 and o2) 2. salt (NaCl) 3. Salt Water 4. Water (h20) is the answer 4 and 2 ?
  77. chemistry

    if 3.60g of NaCl is dissolved into 75.00mL of water, what is the concentration of this salt solution, in m/v%?
  78. math

    A salt solution of 15 litres contains 20%salt. How much water must you add to salt solution, in order to dilute it 15% salt?
  79. Scient

    (NaCl) solutions used in intravenous injections have a concentration of 0.90% NaCl (mass/volume). 4.5grams of NaCl are needed to prepare 500.0 mL of this solution How much water must evaporate from this solution to give a solution that is 9.0% NaCl
  80. Chemistry

    which a growing human population, scientists believe that clean freshwater will become scarce (limited). a possible solution is to desalinate salt water. using what youve learned in this unit, describe the type of a mixture salt water is and explain how
  81. Chemistry

    An aqueous sodium salt (NaCnH2n+1O3) solution has an osmotic pressure of 2.041 atm when 1.068 g of the salt are dissolved in 200. g of water at 25 degrees C. Assuming molality and molarity in such a dilute solution are the same and that the sodium salt is
  82. chemistry

    A large salt crystal having a volume of 56 cm3 and a density of 2.17 g/cm3 was dissolved in to sufficient water to make 375 mL of solution. What is the salt concentration in the solution as g/L?
  83. chemistry

    1. A large salt crystal having a volume of 56 cm3 and a density of 2.17 g/cm3 was dissolved in to sufficient water to make 375 mL of solution. What is the salt concentration in the solution as g/L?
  84. science

    this is a follow up question from my last one with the exact question If you dissolve 200 g of salt in 20 l of water, what is the density of that solution of salty water? Hint: In this particular example, assume that the total volume doesn’t change when
  85. bio/chem

    how do i make percent solutions w/v starting with pure NaCl and distill water. eg 100ml of a 1% NaCl solution
  86. Chemistry

    I had to perform an experiment for the freezing point depression in which we had to determine the freezing points of water as a pure solvent, sodium chloride, sucrose, and ethylene glycol. We had to work with a partner so I completed the experiment for
  87. chem

    Can someone help me please? 1)Calcium chloride is found in salt mixtures that are used to melt ice on the roads in winter. The dissolving of CaCl2 is exothermic. Provide two reasons why CaCl2 is a good choice for this application as compared to a salt such
  88. chemistry

    a mixture of NaCl and sucrose that has a combined mass of 10.20g is dissolved in enough water to make up to a 250mL solution. osmotic presdure of solution is 7.32atm at 23℃. calculate the mass percent of NaCl
  89. Chemistry

    Answer these questions about NaCl also known as table salt: 1. What is the name of the compound? 2.Are there any other names that it is known by? If yes, then please list them. 3.What is the chemical formula of the compound? Is it an ionic or covalent
  90. Chemistry

    Explain why iron corrodes more quickly in seawater than in freshwater. I'm getting conflicting answers from searching on Google; is it because the corrosion of iron is a redox reaction, which involves a transfer of electrons, and therefore this transfer of
  91. science

    In the lab you need to make 1.00 L of a 0.300 M NaCl solution. You had previously made a 0.950 M NaCl solution that you can dilute to form your new solution. How many mL of the concentrated solution would you use to make the dilute solution?
  92. Chemistry

    How many grams of NaCl are presented in 250g of salt solution containing 9% NaCl?
  93. math

    you need to prepare 5ml NaCl solution . you already have a stock solution of 10% NaCl that you are asked to use . how many ul NaCl solution would you need to make 5ml of a 2% NaCl solution?
  94. College Algebra

    How much water must be evaporated from 32 ounces of a 7% salt solution to make a 8% salt​ solution? (Answer is in ounces)
  95. High School Chemistry

    10mL of 0.10M HCl is given. What is the pH? How many milliliters of 0.10M NaOH would be required to neutralize it? What is the pH of the neutralized solution? What would the pH of the solution be if you added 20mL of NaOH? Here's what I have so far: pH of
  96. chemistry

    Distinguish between table salt dissolving in water and sugar dissolving in water. The formula for table sugar is C12H22O11. It freely dissolves in water as the sugar molecules; i.e., it is in solution as C12H22O11. On the other hand, table salt is NaCl.
  97. chemistry

    A 15.0ml sample of NaCL solution has a mass of 15.78g.after the NaCL solution is evaporated to dryness, the dry salt residue has a mass of 3.26g. calculate the following concentrations for the %(m/m), % (m/v), molarity (M)
  98. Chemistry

    if 12.8g of NaCl is added to 243.2 mL of water (density (1.00g/mL)). the volume occupied by the solution is 250.0 mL. Calculate the density of the salt water.
  99. chemistry

    In a laboratory experiment, a 18.0 ml sample of NaCl solution is poured into an evaporating dish with a mass of 24.00 g. The combined mass of the evaporating dish and NaCl solution is 37.15g. After heating, the evaporating dish and dry NaCl have a combined
  100. Chemistry

    3) You make a solution by dissolving 3.4g Ba(OH)2 in enough water to make 450ml of salt solution. a. What is the molarity of the solution?