1. science

    determine the molarity of the following solution 31 g MgF2 in 55ml H20

    asked by willie on January 8, 2013
  2. chemistry

    predict the pH of an aqueous solution that is 0.00378 molar in HBr

    asked by katie on May 7, 2008
  3. chemistry

    what is the effects of NH3(aq) and HCl(aq) on the CuSO4 or NiCl2 solution

    asked by molly on February 28, 2012
  4. Chemistry

    Find the concentrations of all species in a 0.10mol/l solution of NaOH

    asked by Buck on May 31, 2016
  5. Calculus

    Find the specific solution of the differential equation dy/dx= 4y/x^2 with condition y(-4) = e.

    asked by John on February 16, 2016
  6. chemistry

    What is the pH of a solution of vinegar, which is 5.00% (w/v) acetic acid (CH3COOH, Ka = 1.8 e-5).what is the % dissociation?

    asked by cs on November 28, 2010
  7. Chemistry-Urgent

    What is the molality of a solution containing 11.1 g Na2SO4 dissolved in 2269.2 g of water?

    asked by Brianna on February 19, 2017
  8. science

    Calculate the concentration of all species in a 0.145M solution of H2CO3

    asked by Kris on March 18, 2015
  9. chemistry help

    What mass of Kbr is present in 25 mL of a 0.85 M solution of potassium chloride?

    asked by tom on May 10, 2009
  10. Chemistry

    Above what Fe2 concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 8.03? The Ksp of Fe(OH)2 is 4.87×10-17 M3.

    asked by Jematormal91 on April 5, 2012
  11. Chemistry

    How many grams of Na2CO3 can be found in a 273 mL sample of 0.5 M solution

    asked by Linzy on April 8, 2013
  12. Chemistry

    Calculate pH of a solution that is 0.255M in CH3NH2 and 0.105M in CH3NH3Br

    asked by Gabby on March 6, 2015
  13. Chemistry!! Please Help

    How many grams of chloride are present in 1.00 liter of a 1.5 M solution of CaCl2?

    asked by margrav2 on December 16, 2010
  14. chemistry

    What is the final volume V2 in milliliters when 0.600 L of a 40.9 % (m/v) solution is diluted to 20.1 % (m/v)?

    asked by Anonymous on April 25, 2012
  15. chemistry

    what are the solvent and solute in a solution containing 100g of ethanol and 3g of sucrose?

    asked by Carla on December 12, 2010
  16. Math

    What is the solution to the square root 8 to the nearest integer? A. 3 B. 5 C. 7 D. 9 Is the answer A? Thanks

    asked by Anonymous on October 16, 2014
  17. calculus

    Which of the following is NOT a solution to cos^2 x = 3sin^2 x? 30 60 150 210 330

    asked by philly on November 27, 2012
  18. trig

    Complete the general solution to y = arcsin -. y=____±2k IM lost please help

    asked by tracy on March 24, 2010
  19. Chemistry

    what is the pH of a solution created by adding 15.5 g of KClO to 228 mL of 1.08 M HClO(aq).?

    asked by Carl on March 12, 2015
  20. chemistry

    What mass percent of a solution with 28.5 g of H2O2 and 300.0 mL of water?

    asked by Anonymous on March 23, 2011
  21. Chemistry

    What is the possible ionic equation of TrisEDTA solution? REDOX reaction.

    asked by Maryam on April 25, 2012
  22. Chemistry

    Calculate the pH of a solution that is 0.185M in HC2H3O2 and 0.125M in KC2H3O2

    asked by Gabby on March 6, 2015
  23. AP CHEMISTRY

    If a solution of HF (Ka = 6.8 10-4) has a pH of 3.42, calculate the total concentration of hydrofluoric acid.

    asked by Stanley3000 on February 14, 2012
  24. calculus

    verify that y=C1e^2x + C2e^-3 is a solution of the differential equation y''+y'-6y=0

    asked by mari on April 10, 2012
  25. College Algebra

    4y-3

    asked by LeAnn/Please help me on November 18, 2009
  26. math

    The function y_p(t) =ln(4 + 2 t), t > -4/2, is a particular solution to the differential equation y''+8y=g(t). Find g(t).

    asked by diego on October 13, 2014
  27. chemistry

    How many grams of AgNo3 are required to make 25 mL of a .80M solution?

    asked by Barbara on December 10, 2010
  28. science

    A 25 ml solution of 0.5 M NaOH is titrated until neutralized into a 50 ml sample of HCl

    asked by Ayomide on June 27, 2018
  29. Chemistry

    What is the purpose of adding distilled water to an HCl solution?

    asked by Lei on October 6, 2013
  30. Chemistry

    Why is it important to swirl the NaOH solution each time before using it during a titration?

    asked by K on March 26, 2011
  31. khilgoan high school

    how to making water dissolv oxyzen test solution?

    asked by tutul on October 26, 2015
  32. world issues

    Is fair trade a solution for farmers in the developing world?

    asked by vikki on December 21, 2010
  33. chemistry

    What volume in mL of a 1.06 M NaOH solution is required to neutralize 12 g of HCl?

    asked by Hani on November 21, 2011
  34. Chemisty

    250g of water containing sucrose freezes at -3.5C. What is the molality of the solution?

    asked by Jared on February 24, 2013
  35. Chemistry

    How do I make 500ml of a 0.3% chlorine dioxide solution from 6.4% tablets?

    asked by Pam on March 31, 2016
  36. College Algebra

    4y-3

    asked by LeAnn on November 18, 2009
  37. chemistry

    How many grams of SrCl2 is required to prepare 1 molar solution of it,

    asked by anitha on December 29, 2015
  38. chemistry

    The mixture of 40 ml of water to 160 ml of solution with ph = 8, causes a change in the ph value. What is the value of the new PH. Use Log 2 = 0.3

    asked by kelly on July 30, 2018
  39. CHEMISTRY

    I TOOK 510 ML ETHYLENE GLYCOLE & 60 ML H2SO4 WHAT COLOR SOLUTION I GOT?

    asked by VIRENDRA on September 30, 2011
  40. Calculus-HELP PLZ !!!!

    Find the complete general solution to the 2nd ODE: 9y'' + 9y' - 4y = 0

    asked by Elyse on July 22, 2013
  41. chemistry

    describe a prepare a 0.25 L.0.5 mol standart solution of NaoH

    asked by bihah bi on August 6, 2012
  42. chemistry

    how do you Prepare a 0.1 L of a 0.1 M NaCl solution, and describe the process in writing.

    asked by jack on February 9, 2011
  43. Chemistry

    Will there be a reaction if a magnesium strip is placed in a solution containing Zn2+ ions?

    asked by Sanjay on September 18, 2018
  44. Chemistry

    What will happen if an iron spoon is used to stir an AgCl solution?

    asked by Sanjay on September 18, 2018
  45. chemistry

    How many moles of \rm HNO_3 are present in 40.0 mL of a 2.40 M solution of nitric acid?

    asked by betty on September 18, 2010
  46. mathematics

    if [x] denotes the integral part of x, then what is the solution set of the equation [x]^2 -5[x]+6=0

    asked by edward on September 22, 2012
  47. Physical Science

    Milk is an example of a A.solution B.homogenous mixture C.colloid D.compound I think its a??

    asked by Chickenbreath on August 28, 2018
  48. Chemistry

    What is the molarity of a 2.50 x 102 cm3 solution containing 560.0 g of C6H12O6?

    asked by Jojo on November 6, 2014
  49. Pre Algebra

    What is the solution to -55+q=7? P.S if you happen to Have any more answers to the other questions that is greatly appreciated

    asked by Help? on September 12, 2017
  50. CHAMISTRY

    how many moles of potassium chloride in a 2.40L solution with a milarity of 1.35

    asked by Anonymous on March 16, 2011
  51. Math

    Could 7 be part of the solution set for the inequity? 5x > 40? Explain your reasoning

    asked by Amy on March 19, 2015
  52. chemistry

    What is the molarity if 750. mL of a solution containing 332.5g of copper (II) sulfate

    asked by hannah on January 18, 2012
  53. Algebra 1A

    When graphing the inequalities 9x+8y

    asked by Kim on July 3, 2013
  54. CHemistry

    What is the concentration of Sulfate ion in a 0.5 M solution of Al2(SO4)3?

    asked by Praphul on June 17, 2014
  55. Science

    How do you prepare 500mL of a 2.5M solution of NaOH from the solid compound?

    asked by Cassie on December 9, 2012
  56. Chemistry

    What volume of .225 M aluminum chloride solution contains 5.0 g solute?

    asked by Susan on March 12, 2015
  57. discrete math

    Find the solution to the following recurrence: an=3an−1+7 for n2 with initial conditions a0=7

    asked by cjones on April 20, 2012
  58. Chemistry

    in any aqueous solution what effect does the addition of NaOH (aq) have on the concentration of H+ (aq)

    asked by Lisa on June 6, 2012
  59. chemistry

    What is the %v/v concentration of a solution made by adding 25 ml of acetone to 75 ml of water?

    asked by william on July 22, 2018
  60. Chemistry

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    asked by Sundararajan on December 21, 2018
  61. chemistry

    20 g of sugar are dissolved in 1 L of water. Calculate the concentration of this solution.

    asked by Sarah on August 28, 2011
  62. chemistry

    Calculate the grams of Ca(OH)2 used to make 500 mL of a 0.150 M solution.

    asked by gab on April 30, 2018
  63. Chemistry

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    asked by Brian on October 23, 2015
  64. physics

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    asked by ricajane on November 24, 2011
  65. Algebra 1

    Write the solution to the inequality in set-builder notation. 5r + 8 < 63 {r | r < 11}** {r | r < 15} {r | r < 71} {r | r < 8}

    asked by Anonymous on October 26, 2016
  66. Math

    Is the ordered pair (0,0) a solution of the direct variation equation y=kx ?

    asked by Cassidy on December 13, 2012
  67. chemistry

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    asked by jack on February 9, 2011
  68. Chemistry Lab Math

    Prepare 600mL of a 100mM solution of glucose in 0.9% NaCl.

    asked by margrav2 on December 5, 2010
  69. chemistry

    What mass of HCL is present in 0.80 molar, 2500mL solution?

    asked by Anonymous on October 6, 2014
  70. Calculus

    Find the complete solution to the 2nd ODE: 2y''+3y'+y=t^(2)+3sin(t)

    asked by Sara on July 18, 2013
  71. Chemistry

    What is the mass of Na2SO4 is needed to make 1.5 L of 3.0 M solution? Na=23 g.: s = 32 g: O=16g.)

    asked by Lori on March 14, 2016
  72. AP CHEM

    A solution formed by mixing 13.0 mL of 0.013 M Ba(OH)2 with 31.0 mL of 7.0 ✕ 10-3 M NaOH. Calculate [OH-]

    asked by Jordyn on February 17, 2015
  73. Organic Chemistry

    What would have happened if we had forgotten to neutralize the aqueous solution before recrystallization?

    asked by Andy on November 3, 2010
  74. analytical chemisty

    Calculate the pH and pOH of a 0.00002M solution of acetic acid.

    asked by mary on September 23, 2012
  75. Algebra

    Write the solution set of the inequality |x + 2| < 5 in the interval notation.

    asked by Kim on September 30, 2014
  76. chemistry

    what mass of K2SO4 would you measure out to prepare 550 mL of a 0.76 M solution?

    asked by becca on February 7, 2011
  77. Natural science

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    asked by Phumelele on April 23, 2016
  78. chem

    How would you prepare 100 mL of a 0.01N sulfuric acid solution?

    asked by Anonymous on March 7, 2014
  79. Chemistry

    Calculate the molarity of a 5.4% sodium hydroxide solution whose density is 1.07 g/mL.

    asked by anaymous on December 6, 2010
  80. chemistry

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    asked by lynda smith on November 18, 2009
  81. Chemistry stoichiometry

    How many grs of H2SO4 is required to obtain 0.1 molal of 1 kg solution?

    asked by Anonymous on August 10, 2017
  82. Chemistry

    Given a very concentrated glycercol solution. Dilute it to 7.5 fold dilution. How do I do this ?

    asked by Adams on February 17, 2013
  83. Chemistry

    A solution is prepared by diluting concentration HNO3 to 2.0 M,Calculate PH.

    asked by Ethio on November 23, 2011
  84. AP Chemistry

    Which is a stronger base in aqueous solution, IO- or IO3-? Explain.

    asked by Lisa on April 26, 2010
  85. chemistry

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    asked by kathy on September 13, 2013
  86. chemistry

    Under what conditions might a chemist describe a solution in terms of molality? Why??

    asked by lola on May 25, 2010
  87. chemistry

    what is the molarity of a solution, if 12.0 g of KCl is dissolved into 500mL of H20

    asked by Anonymous on May 25, 2010
  88. chemistry

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    asked by kandace on March 5, 2013
  89. Chemistry

    In a 0.05M solution of a weak monoprotic acid,[H+]=.0018.What is its Ka?

    asked by Danny on April 27, 2012
  90. math

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    asked by Alex on September 9, 2013
  91. Social studies

    who advocated for the solution of medicine and health in the progressive era?

    asked by Anonymous on September 25, 2017
  92. Science

    Calculate the hydroxide ion of a solution of almond extracted of PH 3.8

    asked by Debora on June 6, 2014
  93. chem

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    asked by Saphire on January 20, 2012
  94. Chemistry

    Calculate the pH of a 0.250M solution of Sulfurous acid, H2SO3.

    asked by Josh on February 18, 2011
  95. Chemistry(Please help)

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    asked by Hannah on April 7, 2012
  96. Science

    Determine the pH of a .10M solution of KA, the potassium salt of HA. For HA, Ka=1.0x10^-5

    asked by Stephanie on August 8, 2012
  97. chemistry

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    asked by laney on April 26, 2010
  98. College chemistry

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  99. Chemistry

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    asked by Shardai on October 16, 2013
  100. science

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