a density of 1.0 M solution of NaCL

29,852 results, page 76
  1. Chemisty

    Based on equation: 2MnO4¬¬(-) + 6H(+) +5H2O2 → 2Mn(2+) +8H2O + 5O2 A 50.0 mL solution of hydrogen peroxide of unknown concentration was diluted with 1.00L of water. 25mL of this diluted solution was then titrated with acidified potassium
  2. AP chem

    This is part of a marathon problem, we have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information given. a.) All the compunds are electrolytes, although
  3. AP chem

    This is part of a marathon problem, we have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information given. a.) All the compunds are electrolytes, although
  4. chemistry

    A mixture of NaCl and NaBr has a mass of 2.04g and is found to contain 0.70g of Na. What is the mass of NaBr in the mixture?
  5. Chemistry

    How do you prepare 600.0mL of 0.48M Al(NO3)3*9H2O? Is this correct? 1. Measure out 71g of solution 2. Put approx. 300.0mL of water into container 3. Add the 71g of solution to the water and mix 4. Add more water until 600.0mL of solution is obtained 5. Mix
  6. Linear Algebra

    Hello ! i try to solve Linear algebra 2 questions(but need them be written properly as mathmatical proofs) Having A matrice nXn: 1)proove that if A^2=0 the columns of matrice A are vectors in solution space of the system Ax=0 (x and 0 are vectors of
  7. Algebra

    How many real number solutions does the equation have? 0 = -7x^2 + 6x + 3 one solution two solutions** no solution How many real number solutions does the equation have? 0 = 2x^2 - 20x + 50 one solution two solutions no solution**
  8. Chemistry

    Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water . Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know dissociate means to take apart so for example; NaCl would look like Na^+ + Cl^- And another one like: Fe2(SO4)3 would look
  9. Chemistry

    Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water . Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know dissociate means to take apart so for example; NaCl would look like Na^+ + Cl^- And another one like: Fe2(SO4)3 would look
  10. chemistry

    Indicate whether each solution is acidic, basic, or neutral. a. [H3O+] = 6.9 x 10-1 M This solution is acidic. b. [H3O+] = 8.2 x 10-13 M This solution is basic. c. [H3O+] = 3.2 x 10-1 M This solution is acidic.
  11. Chemistry

    A goal of the acid-base titration in this scenario is to determine the concentration of sodium hydroxide solution. To do this, a 1.3000 g sample of potassium hydrogen phthalate (KHC8H4O4) is massed out. The KHP has one acid proton (H+). The solid is
  12. Chemistry

    New problem. Any assistance is greatly appreciated. 22.5 ml of ethanol (density=0.789 g/ml) initially at 7.7 deg. C is mixed with 31.6 ml of water (density=1.0 g/ml) initially at 27.1 deg. C in an insulated beaker. Assuming that no heat is lost, what is
  13. Chemistry

    New problem. Any assistance is greatly appreciated. 22.5 ml of ethanol (density=0.789 g/ml) initially at 7.7 deg. C is mixed with 31.6 ml of water (density=1.0 g/ml) initially at 27.1 deg. C in an insulated beaker. Assuming that no heat is lost, what is
  14. chemistry

    Sodium chloride is formed by the following reaction: NaOH + HCl --> NaCl + H2O How many grams of water are formed when 10 g of HCl is consumed? Round your answer to one decimal place, do not include units or commas. use the molar masses in your text to
  15. Chemistry

    Hello, I need help with calculations for lab. I prepared excess NaOH and HCL solutions (unknown conc., ~0.1M). Then I standardized my NaOH solution by titrating known amounts of KHP (Potassium hydrogen phthalate)with it in the presence of phenolphthalein
  16. Chemistry

    a precipitate is expected when an aqueous solution of potassium iodide is added to an aqueous solution of: sodium sulfate iron(II) chloride calcium perchlorate barium hydroxide lead nitrate
  17. Chemistry

    A volume of 50.0 mL of aqueous potassium hydroxide was titrated against a standard solution of sulfuric acid. What was the molarity of the KOH solution if 19.2 mL of 1.50 M H2SO4 was needed? The equation is 2KOH(aq) +H2SO4(aq)-» K2SO4(aq)+2H2O(l)
  18. OChem

    1. Why does not fluorene dissolve in 1.5M sodium hydroxide solution? 2. What experimental difficulty would you encounter if you had neclected to include a drying step before evaporating the ether solution of the neutral organic compound (fluorene)?
  19. chemistry

    Suppose 24.9 grams of copper (II) nitrate is dissolved in 200. milliliters of a 0.70 moles/liter aqueous solution of sodium chromate. Calculate the final molarity of nitrate anion in the solution.
  20. chem really need 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
  21. chem 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
  22. Chemistry

    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
  23. Chemistry

    A 5.00-g sample of KBr at 25.0 C dissolves in 25.0 mL of water also at 25.0 C. The final equilibrium temperature of the resulting solution is 18.1 C. What is the enthalpy of solution, delta H (s), of KBr expressed in kilojoules per mole? Last one on prelab
  24. chemistry

    A) solve for the number of grams of Ca2+ ion in a solution prepared by adding 1 gram of calcium oxalate powder to 100 mL at pH 9. (B) explain what happens to the dissolved Ca2+ calculated before if you reduce the pH of this solution to 2.
  25. Chemistry

    What are the concentrations of the following solutions: a) a 200mL aqueous solution containing 4.26g sodium solfate. b) a 2.00 L aqueous solution containing 107.0g ammonium chloride NH4Cl. Plz can give me someone the answers for BOTH and the steps how you
  26. chemistry

    A solution of 114 mL of 0.190 molecules KOH is mixed with a solution of 200 mL of 0.220 molecules NiSO4. a. write a balanced equation for the reaction that occurs. identify all phases in answer
  27. chem-acid base titrations

    If 20.0mL of .2019M HCI requires 39.63mL of a NaOH solution for complete neutralization, what is the concentration of the NaOH solution? how many significant figures are justified in the answer?
  28. Chemistry

    Suppose 24.9 grams of copper (II) nitrate is dissolved in 200. milliliters of a 0.70 moles/liter aqueous solution of sodium chromate. Calculate the final molarity of nitrate anion in the solution.
  29. chemistry

    Calculate the concentration of the chromate ion that should be present at the final point of the titration of 50, 00mL of a solution of KBr 0, 02mol/L with a solution of AgNO3 0, 01mol/L, if the maximum theoretical error for titration is 1.0%.
  30. Chemistry

    The antifreeze in a car is a 50% by weight solution of ethylene glycol, C2H6O2 in a water solvent. Calculate the boiling point and freezing point of this solution. (For H2O, Kb=0.52 C/m Kf= 1.86 C/m I can't even find the formula for this in my book, please
  31. chemistry

    Calculate the pH of .100 of a buffer solution that is .25 M in HF and .50 M in NaF. What is the change in pH on addition of the following? A. .002 mol of HNO3 B. >004 mol of KOH I calculated the correct pH of the solution but am having trouble
  32. Algebra II

    A student is asked to solve b2 + a2 = c2 for a and gives the following solution. Assume all variables represent positive Real Numbers. b2 + a2 = c2 pb2 + a2 = pc2 b + a = c a = c-b Explain the mistake(s) made by the student and provide the correct
  33. Science

    1. A 25.00 sample of 0.723M HClO4 is titrated with a 0.273M KOH solution. The H3O+ concentration after the addition of 10.0mL is___M. 2. Determine the pH of a 0.188M NH3 solution of at 25 degrees C. The Kb of NH3 is 1.76x10-5.
  34. Pre-calculus

    Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.) x-3y+2z=21 5x-13y+12z=81 I have an answer but i'm not
  35. math-please help,need quickly

    solve the polynomial inequality and graph the solution set on a real num ber line. express the solution set in interval notation x^3+x^2+64x+64>0 please show work
  36. Chemistry

    you measure 5.3g of KOH and dissolve it in enough water to make 400 ml of solution. what is the molarity of this base? You want to neutralize this base with a 3.7M H2SO4. How much sulfuric acid is necessary to do this? x=5.3g/39+16+1 = 5.3/56=.095m
  37. chemistry

    what volume in Liters of 0.15M KCl solution is required to completely react with 0.150 liter of a 0.175M Pb(NO3)2 solution according to the following balanced equation? 2KCl(aq)+ Pb(NO3)2(aq)-PbCl2(s)+ 2KNO3(aq)
  38. Chemistry

    A solution of 114 mL of 0.160 molecules KOH is mixed with a solution of 300 mL of 0.250 molecules NiSO4. a. write a balanced equation for the reaction that occurs. identify all phases in answer
  39. CheMistry

    A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil. After cooling to room temperature, the solution was poured into a 250-mL volumetric flask and diluted to
  40. Is anyone here a chemistry genuis?

    The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium
  41. Chemistry

    NaHCO3 + HCl = NaCl + H2O + CO2 The there are .0489 moles of CO2, and HCL is 6M. find the amount of HCL in mL and the grams of NaHCO3
  42. college chemistry

    In the derivation of this expression: [ln]/[HIn]A# 2 * A#1,acid/A# 2,basic * A#1 We assumed that the HIn form of the indicator is the only form present in the most acidic solution. Is this a valid assumption? Why or why not? Support your answer by
  43. chem

    Liquids A and B form an ideal solution. A certain solution contains 25 mole % of A, whereas the vapor in equilibrium with the solution at 25 degrees C contains 50. mole % of A. The heat of vaporization of A is 5 kcal/mol; that of B is 7 kcal/mol. a)
  44. chemistry

    A 1.0 M acetic acid solution (CH3COOH, pKa = 4.7) is neutralized by dissolving NaOH(s) (a strong base) in the solution. Estimate the pH at the equivalence point of the neutralization process: 4.7 7.0 9.3 Which one of the following statements best explains
  45. CHEMISTRY

    I have these equations in our book , but I've tried a few times to solve it in half reaction method , but I couldn't yet : 1) KMnO4 + KIO3 => MnO2 + KIO4 ( in a basic solution ) 2) MnO4- + Cl- => Mn^+2 + HClO ( in a acidic solution ) I think these
  46. Chemistry

    Hey guys! Trying to understand this problem before my Chem exam but I just can't get it down no matter how hard I try. Detailed solutions would be greatly appreciated because I'm so lost on this one. Thanks! What mass of ammonium chloride must be added to
  47. science

    what is the volume of a 6.o-kg aluminum ball having a density of 2700 kg/m3?
  48. Chemistry

    How can I make 100ml 0f 2N of HCl? purity is 35% and density is given as 1.18 g/mL
  49. Science

    What is the density of a substance with a mass of 0.0450 kg and a volume of 26.4 ml
  50. ecology

    what si the density of an object that has a mass of 12.0g and a volume of 96.0mL
  51. math

    Suppose thatthe joint density of X and Y is given by (x,y)=e-(x/y).e(-y) ,0<x<‡,0<y<‡ and is o otherwise. Find P(X>1 / Y=y)
  52. science

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  53. calculus

    Find the center of gravity enclosed by y^2=4x,x=4,y=0 if its density is given by ä(x.y)=ky
  54. science

    how does density affect the movement of ocean water?
  55. science

    how is it possible a can with calculated density greater than 1.00g/ml could have floated?
  56. physics

    What is the relative density of Al=2700 and H2O=1000kg
  57. science

    if the expiremenal density of something is 2.66 but the true is 2.7 what is the percent error?
  58. chemistry

    what is the density of a sample of 65.0 ml of automobile oil having mass of 59.82 g
  59. chemistry

    What is the density of propane (CH3CH2CH3) gas at 25°C and 65.0 cm Hg? (1atm=76 cm Hg)
  60. Chemistry

    How do I calculate the thckness of tin if I am only given the density which is 7.28grams
  61. chem

    how would you find molecular mass when given only density? (1.25g/L)
  62. scicence

    the mass of a rock is 15.0 g and its volume is 3ml what is the density?
  63. science

    how does density affect the movement of ocean water?
  64. physics

    what is the terminal velocity of 5 µm particle with a density of 8.90 grams/cm^3
  65. chemistry

    what isw the density of N2O,a gas at STP?
  66. science

    a 15-g sample of a material has a volume of 1.3cc. what is its density
  67. Science

    What is the density of a marble that has a mass of 52 g and a volume of 25 cm3?
  68. science (Need FAST FEEDBACK!!!)

    Is a density bottle the same as a pycnometer?
  69. Chemistry

    What would be the density of Hydrogen gas at 500 C and 0.76 atm?
  70. question

    what does population density mean? i searched it up on the dictionary. com , but i still do not understand
  71. chemistry

    What is the mass of 225ml of a liquid that has a density of 0.880g/ml
  72. chemistry

    how do you change Density= mass/volume (D=m/v) to solve v or m?
  73. PHYSICS

    The density of a bottle is 100 and its mass is 50.What is its volume
  74. science

    . How does changing volume change the density of an object?
  75. science-electromagnetism

    Find the current density J at (2 m, 1 m,3 m) if H=2xy^2k Am^-1.
  76. Maths

    Suppose thatthe joint density of X and Y is given by (x,y)=e-(x/y).e(-y) ,0<x<‡,0<y<‡ and is o otherwise. Find P(X>1 / Y=y).
  77. HPS

    What is the density of water saturated with copper sulfate
  78. science

    what is the density if the mass is 17g and the volume is 34cm3 ?
  79. science

    How does a substance's density react to changes in temperature and pressure?
  80. science

    tell what happens to each of the following as depth increases temperature pressure density
  81. Chemistry

    calculate the density of 50.0 g of gold that occupies a volume of 2.59 mL.
  82. Science

    An object weighing 90 N has a volume of 45 mL and a mass of 9.0 g. What is its density? A. 0.10 g/mL B. 0.20 g/mL C. 5.0 g/mL d. 10 g/mL Please and Thank YOU
  83. Science

    What is the density of 200g of coke with a volume of 150mL?
  84. Physics

    what is the volume of an object whos density is 2.2 g/cm^3 and has a mass of 50 g?
  85. chemestry

    if my mass of my aluminum cube is 5.45 and volume is 2 ml, what i my density?
  86. science

    changing the mass or volume of an object changes its density and ?
  87. physical science

    Platinum has a density of 23.4g/cm3. What is its mass?
  88. science

    if you get cut a type of metal in two pieces do they both have the same density
  89. Chemistry

    A gas has a density of 1.25 g/L at STP. What is its molecular mass?
  90. chemistry

    What clear liquid has a density of 0.814 g/mL but is not an alcohol?
  91. chemistry

    What volume of alcohol would you use if you needed 25.0 g? Density is 0.7855 g/ml at 20°C
  92. physical science

    what is the density of iron if 5.0 cm at the third has a mass o 39.5 grams
  93. chemistry

    How do I work out the density of HCI at 600 celsius ? Thanks
  94. Physical Science

    How do you calculate mass? If you are given density and volume.
  95. Science

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  96. physical science

    if an object has a mass of 10 g and a volume of 5 ml what is its density
  97. World Geography

    What biomes have the highest population density?
  98. science

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  99. Science

    Mass=48; volume=24cm³. What is the density of this substance?
  100. chemistry

    2. What is the density of propene gas measured at 2.5 atm and 47 C?