A 0.179 g sample of a vitamin C tablet was titrated with 0.1000 M NaOH according to the procedure in this experiment. The titration required 7.08 mL of NaOH solution. How many moles of NaOH were used in the titration?

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  1. Stoichiometry

    4. Vitamin C, M= 176.12 g/mol, is a compound of composed of carbon, hydrogen, and oxygen. Vitamin C is found in many natural sources especially citrus fruits. When a 1.000-g sample of vitamin C is burned in a combustion apparatus 1.50 g of CO2 and 0.410 g

  2. AP Chemistry

    A 5.0 M solution of HNO3 is titrated with 0.3 M NaOH. Identify the species that have the highest concenttrations in the solution being titrated halfway to the equivalence point. A 25.15 ml of 0.35 m HNO3 was titrated with an unknown concentration of NaOH.

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  5. statistic

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  6. Chemistry

    Ascorbic acid (vitamin C) is a diprotic acid having the formula H2C6H6O6. A sample of a vitamin supplement was analyzed by titrating a 0.3252 g sample dissolved in water with 0.0284 M NaOH. A volume of 13.27 mL of the base was required to completely

  7. Chemistry

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  9. chem

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  10. Help!!!!!!!!!!!!

    A 0.391 g sample of KHP will be titrated with a NaOH solution with an assumed concentration of 0.100 M. Calculate the volume of NaOH that should neutralize the KHP sample.

  11. Chemistry

    A 0.179 g sample of a vitamin C tablet was titrated with 0.1000 M NaOH according to the procedure in this experiment. The titration required 7.08 mL of NaOH solution. How many moles of NaOH were used in the titration? How Many moles of Vitamin C were in

  12. CHEM

    A 0.552 g sample of ascorbic acid(Vitamin C) was dissolved in water to a total volume of 20.0 ml and titrated with 0.1103 M KOH. The equivalence point occurred at 28.42 ml. The pH of the solution at 10.0 ml of added base was 3.72. From this data, determine

  13. Vitamins

    Vitamins that may cause toxicity if ingested in too large amounts are: 1.vitamin A,vitamin C, and thiamin 2.vitamin C, riboflavin, and thiamin 3.vitamin A,vitamin D,and pyridoxin(B6) 4.vitamin D,vitamin C, and B12 Doesn't vitamin A,vitamin D, and

  14. chemistry

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  15. chem--please help me!!

    when a 25.0 mL sample of an unknown acid was titrated with a 0.100 M NaOH solution. Determine Ka for the unknown acid. Volume NaOH = 12.5 mL; pH=3.80 please help me explain in details!!!

  16. Chemistry

    For a tablet containing 500mg vitamin C, Calculate how many mL of 0.095M NaOH are required for titration ( molar mass of ascorbic acid- vitamin c is 1.76.12g/mol) I am not sure of the conversions to use, how to get started with the question.

  17. Chemistry

    An antacid tablet weighing 1.462 grams was dissolbed in 25mL of 0.8M HCl and diluted with water. The excess HCl was titrated with 3.5 mL of 1.019M NaOH solution. 1. Calculate the number of millimoles added to the tablet 2. Calculate the number of

  18. chemistry

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  19. Chemistry

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  20. Chemistry

    An antacid tablet contains the weak base Mg(OH)2. After crushing the tablet and adding 20.00 mL of 1.00 M HCl(aq) to it, the remaining acid is titrated to the end point with 29.50 mL of 0.495 M NaOH. How many milligrams of Mg(OH)2 were present in the

  21. College-Chemistry

    NaOH(s)+ H2SO4(aq)=Na2SO4(aq) + H2O(l) Consider the unbalanced equation above.A 0.900 g sample of impure NaOH was dissolved in water and required 37.0 mL of 0.145 M H2SO4 solution to react with the NaOH in the sample. What was the mass percent of NaOH in

  22. Balthazar

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  23. chemistry

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  24. chem

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  25. physics

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  26. Inorganic chemistry

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  27. algebra

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  28. Chemistry

    A 25.0 mL sample of NaHSO4(aq) was titrated with 0.500 mol/L NaOH(aq) using phenolphthalein indicator. At the endpoint, one drop of NaOH(aq) was sufficient to change the phenolphthalein indicator from colourless to pink. To reach this point, 10.2 mL of

  29. Chemistry

    A sample of fresh grapefruit juice was filtered and titrated with the above I2 solution. A 100 mL sample of the juice took 9.85 mL of the iodine solution to reach the starch endpoint. a. What is the concentration of vitamin C in the juice in mg vitamin

  30. CHM 300

    How do you find the Mass of Vitamin C in tablet? we did Redox Titration (Determination of ascorbic acid by Iodometric Back-Titration) I have fillied out the data table for Standardization of 0.07 M Na2S2)3 for the determination of unknown I cannot figure

  31. chem

    a 50ml aliquot sample of vinegar is titrated with a 0.078 M NaOH sol'n. The phenolpthalein end point was reached after the addition of 35.6 ml. Equation: HC2H3O2 + NaOH _____> NaC2H3O2 + H20 Calculate the % by mass/vol. of acetic acid in the sample.

  32. AP Chemistry

    There is an unknown amount of unlabelled monoprotic acid in an unknown amount of water titrated with a sample with a solution of NaOH of unknown molarity. After adding 10.0 mL of NaOH, the pH=5.0. The equivalence point is 32.22 mL of NaOH. What is the Ka?

  33. chem

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  34. chemistry

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  35. chemistry

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  36. Math

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  37. Chemistry

    1-A sample of potassium hydrogen oxalate, KHC2O4, weighing 0.717 g, was dissolved in water and titrated with 18.47 mL of an NaOH solution. Calculate the molarity of the NaOH solution. 2-A 35 mL drinking water sample, whose pH is buffered to 10, is titrated

  38. NEED HELP WITH CHEMISTRY HW

    Ascorbic acid (vitamin C) is a diprotic acid having the formula H2C6H6O6. A sample of a vitamin supplement was analyzed by titrating a 0.2894 g sample dissolved in water with 0.0215 M NaOH. A volume of 10.83 mL of the base was required to completely

  39. Chem

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  40. Chemistry

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  41. Chemistry

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  42. Chemistry

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  43. GChem

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  44. College Chemistry

    The Question Is: "A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf

  45. Chemistry

    The Question Is: "A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf

  46. Chem

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  47. Chemistry

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  48. chemistry

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  49. science

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  50. math

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  51. Chemistry

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  52. Chemistry

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  53. Chemistry

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  54. Chem

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  55. chemmmistry

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  56. CHEMISTRY

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  57. Business Math

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  58. chemistry

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  59. College Chemistry

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  60. Chemistry

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  61. chemistry

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  62. chemistry

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  63. chemistry

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  64. Chemistry

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  65. Science

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  66. Analytical Chemistry

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  67. Chemistry

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  68. chem

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  69. chemistry

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  70. Chemistry

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  71. Chemistry

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  72. Chemistry

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  73. chemistry

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  74. Analytical Chemistry

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  75. Chemistry

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  76. Chemistry

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  77. chemistry

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  78. Chemistry

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  79. chemistry

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  80. chemistry

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  82. Chemistry

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  83. chemistry

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  84. Chemistry

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  85. chemistry

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  86. Chemistry

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  88. Chemistry

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  89. math

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  90. General Chemistry

    A 0.179 g sample of a vitamin C tablet was titrated with 0.1000 M NaOH according to the procedure in this experiment. The titration required 7.08 mL of NaOH solution. How many moles of NaOH were used in the titration?

  91. College Chemistry

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  92. Chemistry

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  95. Chemistry

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  98. statistics

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  100. Chemistry

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