1. Chem

    Specify the concentration of each ion in solution for the following: .10 M AlCl3 (aq) and .15 M (NH4)2SO4 (aq)

    asked by Sarah on February 13, 2017
  2. Chemistry

    A 0.035 M solution of a weak base has a pH of 10.88. What is the Kb for the acid? Where Di I even begun**???

    asked by L.Bianchessi on March 5, 2012
  3. chemistry

    How many grams of water should you add to 33.0 of sucrose, , to get a 0.795 solution?

    asked by Juliana on September 25, 2011
  4. chemistry

    If a solution containing 0.22 M Cl -, Br -, I -, and CrO42- is treated with Ag+, in what order will the anions precipitate?

    asked by Jess on September 23, 2011
  5. chem

    What is the name for the solution that can dissovlce no more solutte? a.unsaturated b.saturated c.supatersaturated

    asked by Anonymous on February 8, 2008
  6. 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
  7. chemistry

    why we add acid to the standardization of sodium thiosulphate solution?

    asked by aiman on January 2, 2016
  8. chemistry

    what mass of water is necessary to prepare 150.0g of 1.30% saline solution

    asked by Anonymous on December 12, 2014
  9. 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
  10. Science

    How many grams of NaOH will be needed to prepare 250ml of 0.1M solution:-

    asked by Md Shams Rizvi on March 10, 2017
  11. Chemistry

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

    asked by Danny on April 27, 2012
  12. school math 3rd grader

    how to find solution to subtraction problem without doing any calculation. explain?

    asked by tom on November 18, 2015
  13. chemistry

    Calculate the pH of a solution prepared by mixing 25.0 mL of 0.60 M HC2H3O2 and 15.0 mL of 0.60 M NaOH?

    asked by Julie on May 6, 2010
  14. Chemistry

    What is the ph of the final solution when 10 mL of HCl is completely neutralized with 11mL of 0.1M Na(OH)?

    asked by Niki on March 6, 2012
  15. Chemistry

    Please help me, determine the molarity of a solution containing 2.5 moles CuSO4 in 4.2 L of water

    asked by phyllis on October 30, 2012
  16. Math

    How do I writ a equation that involves multiplication,contains a variable and has a solution of 5. Can you please help me

    asked by Nadia on November 29, 2016
  17. Chemistry

    Calculate the pH of an aqueous solution containing 3.8 10-2 M HCl, 1.0 10-2 M H2SO4, and 3.3 10-2 M HCN.

    asked by Ashley on March 5, 2012
  18. Math

    How many kg of pure salt must be added to 8 kg of a 30% solution to obtain a 35% soltution?

    asked by Math on October 28, 2016
  19. CHEMISTRY

    What concentration of aqueous CaCl2 solution freezes at -10.2ºC?

    asked by Anonymous on November 23, 2010
  20. Math

    Use digits 0 through 9, without using a digit more than once, so that you can make the following reduce to a solution of x < -1/2 How do I do this? Please help, I am confused.

    asked by Maya on February 8, 2017
  21. Organic Chemistry

    After extraction with bicarbonate,in which form is benzoic acid now in solution?

    asked by Davia on November 17, 2010
  22. Algebra

    I am helping my granddaughter in algebra and need to know how to get the answer. What is a solution of x² + 6x = –5? x = –6 x = –1 (I say this one) x = 1 * (she thinks it is this one) x = 6

    asked by Anonymous on October 30, 2014
  23. chem

    How many chloride ions are present in 65.5 mL of 0.210 M AlCl3 solution

    asked by Anonymous on February 11, 2015
  24. Chemistry

    HZ is a weak acid. A concentration of 0.020M in aqueous solution gives a pH of 4.93 what is the Ka?

    asked by Mandie on November 12, 2011
  25. ap chemistr

    The ionization constant of HA is 1×10−6. What must be the ratio of [A−] to [HA] for the preparation of a buffer solution with a pH of 5.74?

    asked by gabriella on February 4, 2014
  26. chemistry

    How would you make 250 ml of a .51M calcium hydroxide solution?

    asked by Anonymous on March 30, 2011
  27. science

    How many moles of li2so4 is required to prepare 300ml of a 0.5 m solution

    asked by ernstcia on March 31, 2015
  28. chem(litmus)

    Is it wrong to put litmus paper directly in solution?

    asked by mary on September 30, 2009
  29. chemistry

    Write ksp for ba3(po4)2 in an aqueous solution

    asked by Tina on April 30, 2012
  30. Chemistry

    6.2g of NaOH is added to 800ml of water What is the molarity of the solution? What is the pH?

    asked by Tegan on November 26, 2015
  31. Algebra 1A

    When graphing the inequalities 9x+8y

    asked by Kim on July 3, 2013
  32. AP Chem

    Determine the [H3O^+] of a 0.240 M solution of formic acid.

    asked by Eddie on March 21, 2010
  33. CHEMISTRY.

    Calculate the ph of a solution containing 0.15M HF (ka= 7.1x10^-4) and 0.26M NaF.

    asked by Siobhan.R on May 10, 2017
  34. Chemistry

    Calculate the volume of 0.3MHCL used to neutralise NaOH solution

    asked by Chris on March 25, 2013
  35. math

    use set-builder notation to describe the complete solution 5[3m-(m+6)]>-6(m-5)

    asked by jay jay on July 14, 2008
  36. chemistry

    What is the pH of the solution created by combining 0.80 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)?

    asked by Cindy on July 12, 2010
  37. math

    I have trouble finding the solution for this: Find the equation of the line through (2,a) and (4,b).

    asked by stacy on January 23, 2011
  38. 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
  39. chemistry

    The pH of a 1.00 10-3 M solution of pyrrolidine is 10.82. Calculate Kb. i keep getting anumber that is ^ (positive) and that's way to big....

    asked by Jennifer on February 15, 2009
  40. Chemistry

    Calculate the molarity of a 100. mL solution containing 22.3 g of sucrose (C12H22O11)

    asked by Mariah on September 24, 2012
  41. Algebra 2

    Could you explain the difference between the solution(s)to an equation and the solutions to an inequality.

    asked by JOY on September 3, 2011
  42. chemistry

    How much water must be added to 6.0 mL of a 0.05 M stock solution to dilute it to 0.020 M?

    asked by Anonymous on May 21, 2011
  43. Chemistry

    How much of NaOH (in grams) is needed to prepare 546 mL of solution with a pH of 10.00 ?

    asked by Sara on February 15, 2011
  44. 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
  45. Chemistry

    what mass of NaCl do you need to make a 500mL of a 0.10M solution?

    asked by LUIS on March 28, 2016
  46. Science

    Calculate the molality of 48.2 percent by mass KBr solution?

    asked by Donna on April 2, 2019
  47. 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
  48. chemistry

    state what happens when chlorine is bubbled through Iron(II) sulphate solution .

    asked by Anonymous on January 4, 2016
  49. chemistry

    What volume of 0.5M H2SO4 will exactly neutralise 20cm3 of 0.1MNaOH solution?

    asked by aniekan on July 27, 2015
  50. math

    write an integer for each solution a salary increase of $250

    asked by Alex on September 9, 2013
  51. analytical chemisty

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

    asked by mary on September 23, 2012
  52. Algebra

    I have answered the question but not sure how to check for extraneous solution. x/(5x+4)=3 The answer is -6/7

    asked by Eric on February 8, 2017
  53. Chemistry

    Calculate the molar solubility of manganese II hydroxide in ph 12.85 solution.

    asked by Anonymous on May 26, 2014
  54. Chemistry

    You need to make 500mls of a 7percent bovine serum solution

    asked by Nisha on October 20, 2014
  55. Algebra 1

    systems of equations with different slopes and different y-intercepts have more than one solution Always sometimes Never I believe it is Never or sometimes I am leaning towards Never

    asked by A User on November 19, 2015
  56. Alg 1

    Reasoning: The equation 3x^2 + bx + 3 = 0 has one real solution. What must be true about b? I think it is: b must be the same as -4(a)(c). What are your thoughts?

    asked by Jane on April 15, 2013
  57. chemistry

    what is the solubility of X in mole/dm3 if 25cm of its saturated solution contains 4.0g of X.

    asked by emma 45 on March 14, 2012
  58. algebra

    Find solution to equation X^2+x+ãx^2+x-2 =0 Note; square root is x^2+x-2

    asked by Jessica on July 21, 2009
  59. Chemistry

    How much of NaOH (in grams) is needed to prepare 546 mL of solution with a pH of 10.00 ?

    asked by Sara on February 16, 2011
  60. math

    tell whether the point (9,3) is a solution of the inequality 4x-5y

    asked by maya on April 22, 2009
  61. chemisty

    how we prepare 0.5 mol of solution of hcl in 70ml in water

    asked by asif on November 15, 2015
  62. Chemistry

    What is the molality of an aqueous solution that is 10.0% ethanol, C2H5OH, by mass?

    asked by Marcus on February 10, 2013
  63. Chemistry

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

    asked by Buck on May 31, 2016
  64. Chemistry

    Determine the [H3O+] in a 0.3 M solution of HClO4. Answer in units of M.

    asked by hello on February 25, 2010
  65. math

    The graphs of ​ f(x)=−5/3x+9 ​ and ​ g(x)=2^x−1​ intersect at (3, 4) . What is the solution of −5/3x+9=2^x−1 ? Enter your answer in the box.

    asked by Jay on February 11, 2017
  66. science

    Calculate the pH of the solution 5ml of M/5,HCl+10ml of M/10 NaO

    asked by KANNAN on August 12, 2016
  67. chemistry

    Two aqueous solutions are mixed: 50.0 mL of 1.60×10−2 M H2SO4 and 50.0 mL of 3.75×10−2 M NaOH. what is the PH of the following solution?

    asked by anonymous on April 11, 2010
  68. chemistry

    How many grams of NaC2H3O2 are needed to prepare 350. mL of a 2.75 M solution? i got 79.0 ??

    asked by Boberto on April 3, 2016
  69. science

    Calculate the ph of a buffer solution containing 0.2M NH4OH and 0.25M NH4Cl kb=1.8×10

    asked by rupesh on February 18, 2015
  70. chemistry

    You have 37.0 mL of a 3.00 M stock solution that must be diluted to 0.500 M. How much water should you add?

    asked by Brianna on January 21, 2013
  71. Quick calc question

    The particular solution of the differential equation dy/dt=2*y for which y(0) = 60 is y = 60e2t y = 60 e0.5t y = 59 + et

    asked by Babe Mckay on March 12, 2016
  72. 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
  73. Chemistry

    Determine the total grams of Potassium Iodate solution

    asked by Anonymous on October 1, 2015
  74. ap calculus

    find the particular solution y=f(x) to the differential equation with the initial condition y(-1)=3/2

    asked by blake on April 28, 2012
  75. Chemistry

    HNO3+NaOH --- H2O+NaNO3 What is formed in the solution besides Cu(OH)2?

    asked by Ashley on October 11, 2010
  76. science

    How to prepare 250ml (n/10) sodium hydroxide solution (NaoH)

    asked by Anime's on August 9, 2016
  77. 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
  78. chemistry

    calculate the pH of a 1.94M solution of nitrous acid (HNO2 - ka = 4.5E-4).

    asked by Tara on December 15, 2010
  79. Algebra2

    Write three trigonometric equations each with the complete solution pi+2pin

    asked by steve on May 10, 2017
  80. Chemistry

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

    asked by Sanjay on September 18, 2018
  81. Chemistry

    Is the molarity of a KI solution constant when heated from 25C to 85C?

    asked by terry on March 18, 2011
  82. chem

    the solution with the lowest pH is A. 1.0 M HF B. 1.0 M HCN C. 1.0 M HCOOH D. 1.0 M CH3COOH and how did you find it?

    asked by Saphire on January 20, 2012
  83. Gr.12 Chemistry

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

    asked by Sanjay on September 18, 2018
  84. 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
  85. CHEMISTRY

    how would a chemistry student make a 600 mL of 1.5 M solution of NaBr?

    asked by David on May 9, 2013
  86. CHEMISTRY

    how would a chemistry student make a 600 mL of 1.5 M solution of NaBr?

    asked by David on May 9, 2013
  87. Science

    Calculate the pH of a solution containing 2g of caustic soda per litre of water

    asked by Deepali on October 28, 2016
  88. chemistry

    What mass of HCL is contained in 645 mL of 0.266 M solution?

    asked by bob on May 28, 2009
  89. 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
  90. Science

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

    asked by Cassie on December 9, 2012
  91. Valencia

    2.0L of a 2.0M HCl solution is added to water so that the final volume is 6.0L

    asked by Lisa on November 6, 2012
  92. Math

    Let f(x) = 2x-1 and g(x) = 4-x. Find all values of x for which f(x) < -1 or g(x)

    asked by Peter on September 26, 2012
  93. Chemistry

    What is the maximum [Ba^2+] that can be maintained in 1.100 L of a 030 M solution of Na2SO4?

    asked by Jeremy on November 30, 2010
  94. Chemisty

    Describe how you would prepare 250 ml of a 0.10M NaCl solution?

    asked by Tina on November 17, 2010
  95. chemistry

    25 mL 0.4 M KOH will neutralize 10 mL 1.0 M H2SO4 solution. A) True B) False

    asked by ashley on March 27, 2015
  96. Chemistry

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

    asked by Josh on February 18, 2011
  97. 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
  98. mathematics

    determine the general solution...2.sin(2x+30)=tan 135

    asked by Jossie on March 21, 2013
  99. Further Maths

    Find the values of N for which the solution of the equations 3x+2y=Nx and 15x+4y=Nx is not unique

    asked by Adam on October 10, 2010
  100. Chemistry

    How much water would I need to add in order to dilute 200mL of a 5 M solution down to 2 M?

    asked by Emma on February 21, 2014

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