a density of 1.0 M solution of NaCL

29,680 results, page 40

  1. Math

    Tell whether the system has one solution infinitely many solutions or no solution. x=-7y+34 x+7y=32 a. one solution b. infinitely many solutions c. no solution
  2. Math

    Tell whether the system has one solution infinitely many solutions or no solution. 6y=-5x+24 2.5x+3y=12 a. one solution b. infinitely many solutions*** c. no solution
  3. physics

    cant find much on how to solve problems like these. any help would be appreciated. A pressure of 6000 Pa is exerted on a wall of 12 square meters area. What force is exerted on the wall? What is the pressure at the bottom of a 50 m tall water tower? What is the pressure at the...
  4. Algebra

    A chemist mixed a 70% alcohol solution with a 30% alcohol solution to make a 45% alcohol solution. How many liters of each were used to make 120 L of a 45% solution? I tried solving this with elimination method and made two separate equations. For instance, x+y = 120(.45) .70x...
  5. chemistry

    A 49.45 mL sample of solution containing Fe2+ ions is titrated with a 0.0103 M KMnO4 solution. It required 23.76 mL of KMnO4 solution to oxidize all the Fe2+ ions to Fe3+ by the following reaction. MnO4-(aq) + Fe2+(aq) Mn2+(aq) + Fe3+(aq) (unbalanced) (a) What was the ...
  6. math

    The average air pressure at sea-level will support the column of mercury in a mercury barometer to a height of 760 mm (29.92 in.). If water were used in place of mercury in the barometer, what would be the height of the water column at average sea-level pressure? The density ...
  7. AP Chem

    A student performs an experiment to determine the enthalpy of neutralization of hydrochloric acid and sodium hydroxide. The student combines 25 mL of equimolar solutions of acid and base, both having an initial temperature of 22.5 C, in an open polystyrene calorimeter. Each ...
  8. Physics (Liquids)

    I have a question about fluids ok... I've been told that Pressure = (density of fluid) (gravity) (height) ok that's great in all but I don't see how it works... Pressure = (Force perinduclar to area force is acting on)/(Area force is acting on) ok this great and all but leads ...
  9. chem

    You wish to prepare an aqueous solution of glycerol, C3H5(OH)3, in which the mole fraction of the solute is 0.093. How many grams of glycerol must you combine with 425 grams of water to make this solution? What is the molality of the solution? PLEASE HELP!
  10. chemistry

    25.00 mL of an acetic acid solution requires 23.86mL of a 0.1550M potassium hydroxide solution to reach the end point. What is the molarity of the acetic acid solution? (Hint: write the chemical reaction, and remember stoichiometry)
  11. CHEMISTRY

    A student needed to standardize a solution of NaOH which was approximately 0.125 M. The student carefully prepared the titration setup, but after 25 mL of NaOH was added, what was the pH of solution if initially flask contains 25 mL of 0.250 M HCl solution?
  12. chemistry

    A student needed to standardize a solution of NaOH which was approximately 0.125 M. The student carefully prepared the titration setup, but after 25 mL of NaOH was added, what was the pH of solution if initially flask contains 25 mL of 0.250 M HCl solution?
  13. Chemistry

    A student did not fully mix the solution of Oxalic Acid in the volumetric flask predict and explain the effect of the range of the students titration volumes when using the NaOH solution to titrate the Oxalic Acid solution
  14. chemistry

    Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 2.335-g sample of Mg metal is added to 50.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?
  15. Chemistry

    Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 2.970-g sample of Mg metal is added to 50.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?
  16. chemistry

    a solution of sulphuric acid is titrated (allquot 20.0ml) with a solution of sodium hydroxide (0.1234M) 26.73ml of the base being required to the end point with phenolphthalein. calculate the molarity of the sulphuric acid solution
  17. General Chemistry

    A 230.0mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning the solution is 1.50M. What volume of solvent has evaporated from the 0.275 M solution? a)42.2 mL b)63.3 mL c)187.8 mL d)230 mL e)272.2 mL
  18. ap chemistry

    Which of the following statements about the pH scale is not true? A. In a pH expression, the hydronium ions, H3O+, can be abbreviated simply as H+. B. A solution with a pH of 4 has twice the [H+] of a solution with a pH of 2. C. The pH scale is based on a scale involving ...
  19. Math

    The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH = -logx where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the ...
  20. Physics

    In a huge oil tanker, salt water has flooded an oil tank to a depth of h2 = 4.50 m. On top of the water is a layer of oil h1 = 7.55 m deep, as in the cross-sectional view of the tank as shown in the figure. The oil has a density of 0.700 g/cm3. Find the pressure at the bottom ...
  21. Dr vsec

    The density of water of ice is 0.917gm/cm-3 and the density of sea water is 1.03gm/cm-3.calculate the ratio volume of ice outside to the volume of ice which is inside the sea water
  22. Chemistry

    Iodine, I2, reacts with aqueous thiosulfate ion in neutral solution according to the balanced equation I2(aq)+2S2O2−3(aq)→S4O2−6(aq)+2I−(aq). How many grams of I2 are present in a solution if 33.00 mL of 0.165 M Na2S2O3 solution is needed to titrate the...
  23. chemistry please step by step for me

    what volume of hcl solution of density 1.2g/cm3 and containing 36.5% by weight hcl, must be allowed to react with zinc in order to liberate 4g of hydrogen I know this calculate this part, but I do not get the answer 333.3ml 1.2g/ml x 1000 x 0.365/36.5 = 12M or other ...
  24. Chemistry

    Mass of unknown solution=25.671 Mass ethanol =8.243 Assuming that prior experiments have shown the single-step extraction removes only 72.0 % of the ethanol, the mass of ethanol in your original unknown is 11.45 Mass percent ethanol =44.6 % Given a density of 0.789 g/mL, what ...
  25. Math

    The population in a 55 square mile city, City A, is 44,000. A neighboring city, City B, measures 65 square miles and has 48,750 citizens. Determine which city has a greater population density and by what percentage its population density is greater than the other city's. I don...
  26. Chemistry I

    Acetone , C3H6), is the main ingredient of nail polish remover. A solution is made up by adding 35.0 ml of acetone (d=0.790g/ml) to 50.0ml of ethyl alchole, C2H6O (d=0.789 g/ml). summing volumes are additive, calculate (a). the mass percent of acetone in the solution. (b). the...
  27. Chemistry

    A total charge of 96.5 kC is passed through an electrolytic cell. Determine the quantity of substance produced in each of the following cases. (a) the mass (in grams) of silver metal from a silver nitrate solution (b) the volume (in liters at 273 K and 1.00 atm) of chlorine ...
  28. CHEMISTRY> HELP QUICK! pls

    1. What is the amount of oxalate in 2 mL of 0.035M solution? a) 7 ¡Á 10¨C2 mole b) 1.75 ¡Á 10¨C2 mole c) 7 ¡Á 10¨C5 mole d) 1.75 ¡Á 10¨C5 mole 2. Sodium oxalate may be prepared by titrating oxalic acid (C2H2O4) with sodium hydroxide, according to the equation: ...
  29. Chemistry

    A sample of 8.00 L of NH3 (ammonia) gas at 22 degree Celsius and 735 torr is bubbled into a 0.500 L solution of 0.400 M (hydrochloric acid). The kb value for NH3 is 1.8 x 10^-5. Assuming all the dissolves and that the volume of the solution remains at 0.500L , calculate the pH...
  30. Chemistry

    A student places a zinc electrode in a 0.80 M Zn2+(aq) solution which is connected by an electrolyte to a 1.30 M Ag+ (aq) solution containing a silver electrode. (Note that the solution concentrations are not standard). Determine the initial voltage of the cell at 298 K. Show ...
  31. Chemistry

    A student places a zinc electrode in a 0.80 M Zn2+(aq) solution which is connected by an electrolyte to a 1.30 M Ag+(aq) solution containing a silver electrode. (Note that the solution concentrations are not standard). Determine the initial voltage of the cell at 298 K. Show ...
  32. analytical chemistry

    150 mL of a solution contiains .00015 M NaI, .0055 M NaC, and .12 M Na3PO4. A solution of .10 M AgNo3 is slowly added. Who precipitates 1st, 2nd, and 3rd? When the last one to precipitate just begins to precipitate, what % of the other 2 anions are still remaining in solution?
  33. chemistry

    (3 pts) The stockroom prepared a solution by dissolving 0.2300 g of Erythrosin B (MW = 879.87 g/mol) in DI water in a 250.00 mL volumetric flask. A student pipetted 5 mL of the stockroom solution into a 100.00 mL volumetric flask and diluted it to the mark with DI water. The ...
  34. Astronomy

    The volume of a ball is given in terms of its radius by V=4π3R3. Use this to find the average density of Saturn, i.e. the mass per unit volume. Use Earth’s mass in kg from the Table of Constants to express your answer in kgm3. Note for comparison that water has a ...
  35. science

    Which object exerts more gravitational force, object A with a mass of 25 grams and a density of 2 g/cm3 or object B with a mass of 55 grams and a density of 0.5 g/cm3?
  36. Physics

    Which object exerts more gravitational force, object A with a mass of 25 grams and a density of 2 g/cm3 or object B with a mass of 55 grams and a density of 0.5 g/cm3?
  37. calculus

    What quantity of 65 per cent acid solution must be mixed with a 25 percent solution to produce 384 mL of a 50 per cent solution?
  38. chemistry

    A solution of sodium nitrate, NaNO3, in 200 g of water is saturated at 50°C. If the solution is cooled to 20°C, how many grams of sodium nitrate will precipitate from the solution?
  39. Chemistry

    A volume of 45.3mL of .719 M Ca(NO3)2 solution is mixed with 82.3mL of 1.409M Ca(NO3)2 solution calculate the concentration of the final solution
  40. Chemistry

    To make an acid solution, 6.8 x 10-3 mole of a strong acid (6.8 x 10-3 mole H3O+) is dissolved in water to give a 550 mL solution. What is the pH and [OH-] of the solution?
  41. Chemistry:Important!!!!!!!

    20.00 mL of a H2SO4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 39.13 mL of a 0.1061 M NaOH solution. What is the concentration of the H2SO4 solution?
  42. MATH word prob!

    how many gallons of 70% alcohol solution must be mixed with 30 gallons of 23% solution to obtain a solution that is 60% alcohol? How do I solve this problem?
  43. math

    A pharmacist has an 18% alcohol solution. How much of this solution and how much water must be mixed together to make 10 liters of a 12% alcohol solution?
  44. Algebra

    You have two containers of acid solution. One is 30% acid. The other is a 50% acid solution. How much of each should be added to get a 45% acid solution?
  45. Chemistr

    To 10ml of a 0.10 acetic acid solution a 0.10M NaOH solution is added what is ph of the solution when 9.5ml of NaOH have been added
  46. physics

    Drift velocity is best defined as a. the relationship between current and current density b. the number of mobile electrons per volume c. the number of mobile electrons per length d. the flux of the current density through a given area e. the average speed of the motion of the...
  47. physics

    An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. (a) What is the electric field energy density at P? (b) A parallel-plate capacitor whose plates have area 0.110 m2 has a uniform electric field between its plates with the same ...
  48. Chemistry

    A student begins with 25 mL of a 0.434 M solution of HI and slowly adds a solution of 0.365 M NaOH. 1. What is the pH after 15.00 ml of NaOH solution has been added? 2. What is the pH after 40 ml of NaOH solution has been added?
  49. math

    1 litre of coffee at 80oC need to be cooled to 40oC. Assuming that all the ice melts and no heat is lost to the environment. Take the specific heat capacity of coffee to be 4200J/kgK, density of coffee to be 1000kg/m3 and latent heat of fusion of water to be 3.34 x 105 J/kg. ...
  50. College Chemistry

    48.70 mL of an HCl stock solution was transferred into a 500 mL volumetric flask and filled to the mark. 47.67 mL of the diluted solution was titrated with 0.179 M NaOH and found to have the concentration of 0.885 M. What is the concentration of the stock solution?
  51. Chemistry

    Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 1.890-g sample of Mg metal is added to 125.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?
  52. Chemistry

    Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 1.890-g sample of Mg metal is added to 125.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?
  53. Math

    The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH = -logx where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the ...
  54. chemistry

    A student took 100 mL of a solution of Mg(OH)2 and reacted it with HCl (aq) to calculate the concentration of hydroxide ions in the solution. If 13.75 mL of 0.010M HCl was used to react with all of the OH- (aq) in the 100-mL solution, what was the concentration of hydroxide ...
  55. Chemistry

    a solution is prepared by dissolving 3.7500grams iron(III) oxalate in enough water to make 125.00mL of solution. 1. what is the molar concentration of iron(III) oxalate in this solution? 2. what is the molar concentration of oxalate ions in this solution?
  56. Chemistry

    A student took 100 mL of a solution of Mg(OH)2 and reacted it with H2SO4 (aq) to calculate the concentration of hydroxide ions in the solution.  If 13.75 mL of 0.010 M H2SO4 was used to react with all of the OH- (aq) in the 100-mL solution, what was the concentration of ...
  57. CHEMISTRY

    HOW CAN U TELL IF HNO3 +KNO3 IS A BUFFER SOLUTION A buffer solution must contain a weak acid and its conjugate base OR a weak base and its conjugate acid. HNO3 is a strong base and KNO3 is the salt of a strong base (KOH) and a strong acid (HNO3); therefore, it doesn't qualify ...
  58. chemistry

    name each of the following ionic compounds by stock system... couldn't find these in the list. a)NaCl b) KF c) CaS d) Co(NO3)2 e)FePO4 f)Hg2SO4 g) Hg3(PO4)2
  59. chemistry

    13. The salt that is formed during the reaction between potassium hydroxide and hydrochloric acid is _____. (1 point) NaCl H2O KCl K2Cl
  60. Chemistry

    "What volume of reduced soy sauce (575 mg Na/15 mL) would be predicted to require 25.00 mL of 1.0 M AgNO3 for titration assuming all the sodium is derived from NaCl? A.W. Na= 23
  61. chemistry

    Arrange the following aqueous solutions in order of increasing freezing points (lowest to highest temperature): 0.10 m glucose, 0.10 m BaCl2, 0.20 m NaCl, and 0.20 m Na2SO4.
  62. chemistry lab

    list the possible manipulation errors that might contribute in obtaining a significantly larger amount of nacl than was present in original sample
  63. chemistry

    25ml of a solution of na2c03 having a specific gravity of 1.25g ml required 32.9ml of a solution of hcl containing 109.5g of the acid per litre for complete neutralization. Calculate the volume of 0.84N Hes04 that will be completely neutralized by 125g of nac03 solution The ...
  64. Chemisty

    A 25-mL sample of 0.160M solution of NaOH is titrated with 17 mL of an unknown solution of H2SO4. What is the molarity of the sulfuric acid solution? A. 0.004M H2SO4 B. 0.235M H2SO4 C. 0.117M H2SO4 D. 0.002M H2SO4
  65. Chemistry

    The combustion of liquid ethanol (C2H5OH) produces carbon dioxide and water. After 4.60mL of ethanol (density=0.789g/ml) was allowed to burn in the presence of 15.45g of oxygen gas, 3.70mL of water (density=1.00g/ml) was collected. a)Determine the theoretical yield of H2O for ...
  66. Standing waves and resonance (physics)

    A nylon string has a linear density of 7.2g/m and is under a tension of 150N. The fixed supports are 90cm apart. The string is oscillating in the standing wave pattern. Find a)speed b)wavelength c) frequency v=sqr(F/u(linear density) v=sqrt(150N/7.2g/m) = 4.56m/s b) wavelength...
  67. Algebra 1 college

    How much of a 12% saline solution should be mixed with a 4% saline solution to obtain 40 milliliters of a 6% saline solution?. Use a system of equations and elimination method to solve. can someone please see if I am on the right track. 12T + 4F=6x40 -4 -4F 4 8T=2x40 8T=80 8T/...
  68. chemistry

    A standard sodium carbonate solution is prepared in a 250 cm^3 volumetric flask during a titration,20 cm^3 of a 0,1 mol.dm^-3 nitric acid solution neutralises 25 cm^3 of the above standard solution according to the following balanced equation 2HNO3(aq) Na2CO3(aq)=>2NaNO3(aq...
  69. Chemistry

    Liquid methylene iodide has a density of 3.33 g/mL. A barometer is constructed using methylene iodide instead of mercury. If the atmospheric pressure is 0.951 atm, what is the height of the methylene iodide column in the barometer in cm? The density of liquid mercury is 13.6 g/mL
  70. Physics

    A set of density rods is designed to illustrate the concept of density. The idea is to create cylinders of equal diameters and masses, but varying lengths, to show which have the largest and smallest densities. (a) Derive a formula that will predict the ratio of the length of ...
  71. Chemistry

    Calculate the boiling points of freezing points of the following solutions in water. a) boiling point of a 2.25m solution of propylene glycol (a non-electrolyte) b)freezing point of a 1.0m solution of potassium iodide c)freezing point of a 1.0m solution of nickel(II) nitrate d...
  72. Chemistry

    I have a test on monday and I NEED to ace it in order to raise my grade > . < ldsfkjaslkf right now, acids and bases are killing me can somebody help me with these problems? A buffer solution is prepared by mixing the weak base ammonia (Kb=1.77x10^-5) with ammonium ...
  73. chemistry

    o prepare a 200 mL of aqueous stock solution X, you transferred 50 mL of a known concentration solution into a 200 mL volumetric flask. If you realize that the volumetric flask was contaminated with water droplets after you cleanly transferred the known concentration solution...
  74. Chem 1

    The forensic technician at a crime scene has just prepared a luminol stock solution by adding 15.0g of luminol into a total volume of 75.0 \rm mL of \rm H_2O. What is the molarity of the stock solution of luminol? 1.13M Before investigating the scene, the technician must ...
  75. business calculas

    An apple orchard has an average yield of 38 bushels of apples/tree if the density is 24 trees/acre. For each unit increase in tree density, the yield decreases by 2 bushels. Letting x denote the number of trees beyond 24/acre, find a function in x that gives the yield of apples
  76. chemistry

    A) Determine the concentration in molarity (M) of a crystal violet solution based on a measured absorbance of 0.545 at 590 nm at a path length of 1.0 cm . B) Based on your determined concentration (in molarity,M), how many milligrams of crystal violet were dissolved in the 2 ...
  77. College Chemistry

    If the density of cylinder 1 is 3.55 , what is the density of cylinder 2? (The masses and volumes of two cylinders are measured. The mass of cylinder 1 is 1.35 times the mass of cylinder 2. The volume of cylinder 1 is 0.792 times the volume of cylinder 2.)
  78. Chem 12

    Okay, this is a two-part question and the unit is acids and bases. Ka for NH4 is 5.6 x 10^ -10 Kb for NH3 is 1.8 x 10^ -5 1. Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100mL of a 0.150 molar solution of ammonia. 2. If 0.0800 ...
  79. Chemistry

    When dry and empty, a flask had a mass of 27.31 grams. When filled with distilled water at 25.0 deg C, it weighed 36.84 grams. After cleaning and drying, the flask was filled with chloroform and found to weigh 41.43 grams. At 25.0 deg C, the density of water is 0.9970 g/cm^3. ...
  80. chemistry

    How would you dilute a 2 mg/mL NaCl stock standard to make 100 ml of a 50 mg/dl standard?
  81. chemistry

    you measure out a 15g sample NaCl. the quantity of this sample is considered what
  82. physics

    0.5 mol of salt (NaCl) is dissolved in 4.5 mol of water. What is the increase in entropy
  83. Chemistry

    10ml 15% HCl + 5g NaHCO3 = NaCl + CO2 + H2O. How much CO2 [L]
  84. basic science

    1 litre of coffee at 80oC need to be cooled to 40oC. Assuming that all the ice melts and no heat is lost to the environment. Take the specific heat capacity of coffee to be 4200J/kgK, density of coffee to be 1000kg/m3 and latent heat of fusion of water to be 3.34 x 105 J/kg. ...
  85. chemistry

    1) To prepare a 200 mL of aqueous stock solution X, you transferred 50 mL of a known concentration solution into a 200 mL volumetric flask. If you realize that the volumetric flask was contaminated with water droplets after you cleanly transferred the known concentration ...
  86. chem

    Nacl what is the metal ion formuala and non metal formula
  87. chemistry

    How many grams of NaCl do you have if you have 2.30 x 10 to the 23rd olecules of salt?
  88. College Chemistry II

    Determine the pH for .16M of NaC2H3O2. Determine the pH for .18M of NaCl.
  89. Chemistry

    Which will evaporate faster, 50ml of 1.0m NaCl or 50ml of pure water?
  90. chemistry

    If you add 2 liters of .45% NaCl to 36 liters of blood that has a pH balance of 7.44, what will the new pH be?
  91. chemistry

    If you add 2 liters of .45% NaCl to 36 liters of blood that has a pH balance of 7.44, what will the new pH be?
  92. Biochemistry

    Do you add Nacl or HCL if your target buffer pH is 8, and the buffer is HEPES
  93. science

    2. I need help balancing this Na2(SO4) + CaCl2 „³ NaCl + Ca(SO4)
  94. Chemistry

    Number of Moles of AgNO3 when 0.25 grams of NaCl react with AgNO3
  95. chemistry

    If a solution contains 255ml of ethanol in a 375 ml solution, what is the % of ethanol in that solution?
  96. chemistry

    If a solution contains 255ml of ethanol in a 375 ml solution, what is the % of ethanol in that solution?
  97. Chemistry

    If you dilute 12.5 mL of a 3.5 M solution to make 213.8 mL of solution, what is the molarity of the dilute solution?
  98. Chemistry

    If you dilute 11.6 mL of a 3.5 M solution to make 214.8 mL of solution, what is the molarity of the dilute solution?
  99. algebra

    1. Tell whether the system has one solution infinitely many solutions or no solution. 6y=-5x+24 2.5x+3y=12 a. one solution b. infinitely many solutions*** c. no solution i know its B but can you solve it step by step for me thank you
  100. Chemistry

    Suppose 50.0 mL of an aqueous solution containing an unknown monoprotic weak acid is titrated with 0.250 M KOH. The titration requires 31.52 mL of the potassium hydroxide solution to reach the equivalence point. What is the concentration (in molarity) of the unknown acid ...
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