1. Chemistry

    Determine the volume of a 0.550 M KMnO4 solution required to completely react with 2.55 g of Zn.

    asked by Andrew on March 19, 2010
  2. general chemistry

    How many grams of Ammonium Nitrate would you use to make a 500 ml of 5.684 M solution? Answer

    asked by Anonymous on September 23, 2012
  3. Chimestry

    How many moles of HNO(3) are present if 4.20*10^-2 mol of Ba(OH)(2) was needed to neutralize the acid solution?

    asked by Carmen on December 3, 2011
  4. Chemistry

    calculate the pH and the pOH of an aqueous solution that is 0.035 M In HCI and 0.080 M in HBr?

    asked by Josh on July 23, 2011
  5. Chemistry

    What would be the molarity of a solution made by dissolving 126g K3PO4 into 1500 mL of water?

    asked by Teresa on November 8, 2014
  6. Math

    Twenty equals four decreased by twice an unknown number. I need the equation and the solution please I'm almost finished!!!!!!!!!!!!!!!!!!!!

    asked by Briana on April 21, 2009
  7. Chemistry

    Calculate the hydronium ion concentration of a 0.250M solution of ethaonic acid (Ka= 1.82 x 10^-5)

    asked by Abednego Kumye on April 23, 2018
  8. science

    how many milliliters of 5.5M H2so4 must you use to prepare 500ml of 0.2M sulfuric acid solution? Please hurry!!!!!!

    asked by grant on December 14, 2012
  9. chemistry

    how many grams of MgCl2 would you dissolve in 650mls of water to make a 0.45M solution?

    asked by marie on September 8, 2011
  10. Calculus

    write and row reduce the augmented matrix to find the general solution: 2x - z = 2 6x + 5y + 3z = 7 2x - y = 4

    asked by Liz on January 26, 2014
  11. College Chem

    How many mL of concentrated ammonia (14M) should be diluted to 250 mL to make a 0.75 M NH3 solution?

    asked by Lisa on November 19, 2010
  12. Calculus

    Find the particular solution of the differential equation y'=(5x+21y)/7x satisfying the initial condition y(1)=5.

    asked by Hannah on November 18, 2010
  13. chemistry

    What is the g/L concentration of a solution terminating 10g of NaCI with 95% purity in 250 ml of water?

    asked by william on July 12, 2018
  14. chemistry

    Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH

    asked by Laura on February 12, 2012
  15. Chemistry

    Name the product formed when carbon two oxide is passed into potassium hydroxide solution.

    asked by Yaseerah on May 20, 2015
  16. chemistry

    Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH

    asked by Laura on February 12, 2012
  17. Chemistry

    Calculate the molarity and normality of a solution containing 9.8 g of H2SO4 on 250 cm cube of the solutiom

    asked by Shafket on June 29, 2012
  18. Chemistry

    Which aqueous solution has a freezing point closer to its predicted value 0.01 m NaBr or 0.01 m MgCl2?

    asked by Samantha on April 21, 2010
  19. Math

    Find the solution and round to the hundredths. 24 divided by 0.865. I got two answers I'm confused.

    asked by Jessica on March 16, 2013
  20. chemistry

    Ben has 1L of 0.1mol/dm3 solution of KI & wish to take a sample containing 8.3g of solute.What volume should he measure

    asked by Luc on February 18, 2012
  21. Chemistry

    Calculate the pH of concentrated hydrochloric acid if this solution is 24.8 % HCl by weight and has a density of 1.16 g/mL.

    asked by A.A on November 1, 2008
  22. chemistry

    a solution contain 0.50M propionic acid and 0.20M sodium propionate calculate ph? ka=1.3 × 10^-3

    asked by kanks on March 2, 2013
  23. Chemistry

    What is the molarity of a solution prepared by dissolving 4.92 g of calicum nitrate in 250 mL of water?

    asked by Ambra on May 1, 2012
  24. Science

    15.2% by mass solution of h2o2, density is 1.01g/ml then find the molarity of the sulution.

    asked by Upama on December 6, 2017
  25. chemistry

    if 1.00M solution of NaOH was diluted enough would it eventually become acidic? showing calculations

    asked by sarah on April 17, 2010
  26. chemistry

    One more that should be easy but im stuck. What is the molarity of a 15% by weight solution of HCL (Density = 1.18g/ml)?

    asked by AMY on January 16, 2008
  27. SCIENCE

    HELP ME!! EVERYONE IS MAD AT ME BCUZ THEY THINK I AM YELLING AT THEM BUT REALLY MY COMPUTER WILL ONLY DO BIG LETTERS! IF THERE IS A SOLUTION TO THIS PLEASE HELP ME. THIS IS NOT A JOKE.

    asked by SAMMI on October 4, 2010
  28. Organic Chemistry

    What is the solubility, in mg/mL, of a 50% water/50% methanol solution at 73.5 degrees Celsius? Is there a table available online somewhere?

    asked by Sasha on October 18, 2015
  29. chemistry

    A 11.0% (w/v) solution of ethyl alcohol is diluted from 51.0 mL to 230.0 mL. What is the new weight/volume percent?

    asked by Kyle on February 21, 2012
  30. chemistry

    How many mL of 5.00% (w/v) solution are needed to make 100mL of physiologic saline (0.90%(w/v) sodium chloride)?

    asked by bob on March 17, 2011
  31. CHEMISTRY

    What substances will increase the molar solubility of nickel(II) phosphate in a saturated solution?

    asked by Anonymous on May 3, 2010
  32. college

    Calculate the pH of concentrated hydrochloric acid if this solution is 24.8 % HCl by weight and has a density of 1.16 g/mL. a. ) -0.77 b. ) -0.83 c. ) -0.90 d. ) -0.98 e. ) -1.01 i got c

    asked by A.A on November 1, 2008
  33. chemistry

    What mass of KCl (MM = 74.55 g/mol) is required to make 550 mL of a 0.250 M solution?

    asked by Cassie on November 10, 2014
  34. chemistry

    Concentrated sulfuric acid (18.3 M) has a density of 1.84 g/mL. How many moles of H2SO4 are in each milliliter of solution?

    asked by Anonymous on September 29, 2013
  35. chemistry

    Calculate the molality of sulphuric acid solution in which mole fraction of water is .85

    asked by swastika on June 3, 2014
  36. Chemistry

    The equilibrium constant for the following reaction is 7.2 x 10-10. What is the [H+] in a solution 1.0 M of this acid? HCN + H2O --> H3O+ + CN-

    asked by Andrea on May 13, 2012
  37. College Chemistry

    Balance this equations for redox reactions in basic solution. Fe(OH)3(s) + OCl- ¨ FeO42- + Cl-

    asked by Marissa on September 23, 2010
  38. Chemistry

    7. A solution is prepared by dissolving 8.5 g NaHCO3 and 12.7 g Na2CO3 in 500.0 mL of water. Calculate the pH.

    asked by Nick on March 20, 2013
  39. chemistry

    The concentration of a solution made by diluting 10.0 mL of 0.685 mol/L NaBr to 300 mL is

    asked by ronnie on March 16, 2015
  40. chemistry

    how wud u prepare 1L of a 1.30M aqueous solution of barium sulfide explain

    asked by Jim on December 11, 2014
  41. Chemistry

    What if I have 50g water and I dissolve 5g of NaOH, will the solution have a total mass of 55g?

    asked by Lim on August 22, 2018
  42. Analytical Chemistry

    Calculate the hydroxide concentration of a solution that is 0.1 F with NH3, and 0.25 F in respect to (NH4)2S04.

    asked by juni on September 4, 2016
  43. Chemistry

    7. A solution is prepared by dissolving 8.5 g NaHCO3 and 12.7 g Na2CO3 in 500.0 mL of water. Calculate the pH.

    asked by Nick on March 20, 2013
  44. Chemistry

    For a solution that is 0.168M NH3 and 0.106M NH4Cl calculate the following. [OH-] [NH4+] [Cl-] [H30+]

    asked by Anonymous on April 8, 2015
  45. chemistry

    Determine the volume of a 0.550 M KMnO4 solution required to completely react with 2.80 g of Zn.

    asked by sie on February 14, 2012
  46. chemistry

    the solution contain 6 grams of caustic soda dissolved per dm.find the percentage impurity

    asked by ahmed on November 15, 2010
  47. Chemistry

    What is the molarity of a solution prepared by diluting 25.0 mL of 0.412 M magnesium nitrate to a volume of 1.50 L please help!

    asked by Ashley on November 30, 2012
  48. chemistry

    Current is applied to an aqueous solution of lithium sulfide. What is the cathode and what is the anode?

    asked by Katie on March 1, 2012
  49. Density of a CUSO4 solution

    I need to determine the density of a CUSO4 solution of 1% concentration from a 10cc pipette volume.

    asked by Lorraine on March 6, 2011
  50. chemistry

    what is the new boiling point for a solution prepared from 1.40 mol of KCI 1.00kg of water?

    asked by lkra on October 8, 2011
  51. chem

    A solution that is formed by combining 600. mL of 0.20 M NaOH with 400. mL of 0.40 M HNO3 has an H+ concentration of

    asked by leona on June 19, 2010
  52. chemistry

    If 2.0 mL of 0.80M copper (II) sulfate and 8.0 mL of water are mixed, what is the concentration of the resulting solution?

    asked by roger on March 1, 2012
  53. biology

    two or more compounds combined but keep their chemical identity a.solution b.carohydrates cproteins or d.isotope

    asked by nicole on October 22, 2009
  54. 6th grade

    how do you draw a diagram to find the solution to 2.6 devided by 0.4 ,and explain what the quotant means?

    asked by Mark on October 25, 2009
  55. chemistry

    What is the volume of solvent needed for the preparation of an equal 10% title solution when using 15 mL of solute?

    asked by wallace on August 17, 2018
  56. chemistry

    What is the equilibrium concentration of ammonium ion in a 0.77 M solution of ammonia (NH3, Kb = 1.8 ´ 10–5) at 25oC?

    asked by Anonymous on April 5, 2010
  57. Chemistry: Salt of weak acids and bases

    If 25 mL of 0.20M NaOH is added to 20 mL of 0.25M boric acid, what is the pH of the resultant solution?

    asked by Wen on April 10, 2016
  58. chemistry

    Consider two beakers, one with water and other one with sodium chloride solution. Which of these will have higher vapor pressure

    asked by Angel on June 20, 2010
  59. Science

    Find out the molality of acetic acid ch3cooh whose molarity is 2 and density of solution is 1.20 g/ ml ?

    asked by Kamal on April 29, 2013
  60. geometry

    what is the area of a circle with a circumference of 22 pi in.? expressed in pi in. squared? and what are the steps to arrive at the solution?

    asked by Rachel on April 5, 2011
  61. Algebra 2

    Use synthetic division to divide p(x) = 3x3 − 10x2 − 31x − 12 by (3x + 5). Then check the solution.

    asked by Linda on January 19, 2016
  62. Chemistry

    how many grams of solid KOH is needed to neutralize 1.00 L of 0.250 M HNO3 solution?

    asked by Helena on April 18, 2011
  63. science

    How many grams of glucose (180g/mole) would be needed to make 100ml of a 1.5 M solution?

    asked by matt on April 18, 2011
  64. Chemistry

    how many grams of potassium dichromate are needed to make 250 mL of a 0.75 molar solution?

    asked by Bobbi on March 3, 2011
  65. cerritos

    how many grams of sodium choloride is needed to prepare 600ml of 9% saline solution?

    asked by maribel on September 18, 2011
  66. Science

    Find out the molality of acetic acid ch3cooh whose molarity is 2 and density of solution is 1.20 g/ ml ?

    asked by Kamal on April 29, 2013
  67. math

    list two congruence conditions for the law of sines yields a unique solution

    asked by carol on April 27, 2010
  68. Chemistry

    What is the pH of a solution that results from the addition of 5mL of 0.1 M HCl to 50mL of pure water?

    asked by Anonymous on April 6, 2011
  69. chemistry

    What is the equilibrium concentration of ammonium ion in a 0.77 M solution of ammonia (NH3, Kb = 1.8 ´ 10–5) at 25oC?

    asked by Anonymous on April 5, 2010
  70. math

    how do you write an open statement involving an absolute value inequality when all you are given is the graph of the solution?

    asked by ed on September 20, 2007
  71. Chemisty

    In terms of saturation, how would you classify a KBr solution with a concentration of 78 g/100 g of water at 47°C?

    asked by Hannah on August 1, 2011
  72. Chemistry

    Calculate the pH of a buffer solution containing 1.0 M ammonia (NH3 ; Kb = 1.8 x 10-5) and 1.0 M ammonium chloride (NH4Cl).

    asked by Nick on March 20, 2013
  73. science

    The potential of hydrogen electrode is -118MV.thr H^+ concentration of the solution is a)0.01M b)2M C)10^4M d)1M

    asked by madhubala on July 4, 2018
  74. Chemisty

    In terms of saturation, how would you classify a KBr solution with a concentration of 78 g/100 g of water at 47°C?

    asked by Hannah on August 1, 2011
  75. Algebra

    Determine which point, if any, is in the solution half-plane of the two variable inequality. 3x – 2y < 6 Select one: a. (4, 1) b. (-1, -5) c. (1, 0) d. (2, -2

    asked by Mark on February 20, 2014
  76. chemistry

    How much water must be added to 20liter of 12molar base solution to make it 8molar?

    asked by merry lyn on November 15, 2011
  77. chem

    Calculate [OH- ] and pH for each of the following strong base solutions. (Kw = 1.0 10-14.) 3.155 g of KOH in 460.0 mL of solution] how do you do this

    asked by hannah on March 3, 2013
  78. Science

    Find out the molality of acetic acid ch3cooh whose molarity is 2 and density of solution is 1.20 g/ ml ?

    asked by Kamal on April 29, 2013
  79. college math

    how many grams of NaOH are needed to make a 30% w/w solution using deionized water as the solvent

    asked by Wanda on November 28, 2010
  80. Chemistry

    A solution that has an osmotic pressure greater than that of red blood cells is called?

    asked by Ann on November 29, 2010
  81. chem

    what are some of the factors that affect melting point besides, impurities, pressure, and having a wet solution?

    asked by Jason on October 14, 2008
  82. chemistry

    To 50 mL of this buffer, 10.0 mL 0.76 M soium hydroxide was added, what is the pH of the resulting solution after equilibrium has been re-established

    asked by cel on June 15, 2014
  83. math

    What are the steps to the solution for this problem? What is the difference between 330 and half n equals 114?

    asked by Sandra on April 13, 2011
  84. Chemistry

    How many g of NaOH is needed to make 300.0 mL of a 20 % (w/v) solution? I'm so lost right now I have absolutely no clue

    asked by Thomas Ruger on April 2, 2017
  85. AP Chemistry

    Will a non-volatile solute always lower the vapor pressure of the pure solvent in solution? Why or why not?

    asked by Anonymous on November 21, 2009
  86. chemistry

    How much HCl 9in grams) is needed to prepare 546 mL of solution with a pOH of 10.00 at 25?

    asked by aliceallyx3 on October 17, 2012
  87. Chemistry

    Is "a color of solution becoming less intense due to dilution" maybe evidence of chemical reaction or not?

    asked by Anonymous on November 21, 2016
  88. chem

    What mass of KCl (MM = 74.55 g/mol) is required to make 600 mL of a 0.175 M solution

    asked by whitney on April 12, 2011
  89. chemistry

    How would you prepare a solution of about 8mg/100ml of ascorbic acid in water (25ml)?

    asked by solution chemistry on February 21, 2014
  90. Chemistry

    What is the pH of a .0035 M Ba(OH)2 solution. I did -log(.0070) to find pOH So 14-2.15=11.85 pH? Just want to double check.

    asked by Sarah on March 22, 2013
  91. chemistry

    what is the molarity of a h2so4 solution if 18.5ml of naoh are needed to neutralize 25.0 mL of the sample?

    asked by sandra on October 16, 2012
  92. chemistry

    Calculate the PH and POH of an aqueous solution that is 25.00% of HCL by mass and density of 1.35g/no

    asked by okore on October 9, 2017
  93. Chemistry

    Calculate the grams of solute required to make 2500mL of 90% saline solution?

    asked by Morgan on May 17, 2012
  94. chem

    what is [Ag^+] in a solution formed by mixing 25.0 ml of 0.10 M AgNO3 with 50.0 ml of 1.50 M Na3PO4. Ksp for Ag3PO4=1.0x10^-21

    asked by silvia on November 17, 2015
  95. chemistry

    Calculate the ionization constant, Ka, of phenol (HC6H5O), a weak acid, if a 0.25 M solution of it has a pH of 5.24.

    asked by Audrey on November 15, 2010
  96. Chemistry

    How many mols of OH-(aq) ions are present in 20.33mL of 1.33M sodium hydroxide solution?

    asked by Jaden on March 6, 2013
  97. science

    If boiling permanganate eliminates possible reducing agents in a solution, do I still need to do blank titration?

    asked by aimee on February 5, 2009
  98. physics

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    asked by javen kenso on May 3, 2014
  99. Chem

    What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?

    asked by IH on November 28, 2010
  100. Chem

    What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?

    asked by IH on November 28, 2010

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