1. Chemistry

    what is the PH of a solution of .1 M NAN3 that disassociates into HN3

    asked by Molly on March 4, 2015
  2. Math

    which ordered pair is a solution of the inequality y≥4x - 5 A. (3,4) B. (2,1) C. (3,0) D. (1,1)

    asked by I need helppppp on April 19, 2018
  3. chemistry

    0.0386mol glucose in 88.0ml of solution

    asked by cynthia on December 8, 2012
  4. Algebra

    Which ordered triple is a solution of this system? 2x+y-z=7 -x-2y+4z=-15 x+2y=5z=17 (-2, 6, -5) (1, 3, 2) (2, 5, -2) (3, 1, 0)

    asked by Mary on October 4, 2013
  5. Math 116

    9/10th (3+8x)+3greater or equal to 15 what is the solution to this?

    asked by Allison on September 22, 2011
  6. math

    solve using multiplication -6x>1/13 The solution is < -1/78 is this correct?

    asked by jason on June 29, 2009
  7. Chemistry

    What is the pH of a solution with a concentration of 4.7 × 10-4 molar H3O+?

    asked by Jamie on June 19, 2011
  8. math help asap

    what is the solution to 2x+9greater or less then 5 and 2x-13greater or equal to -9.

    asked by Allison on September 22, 2011
  9. Anatomy and Physiology

    If one solution is 1000 x as acidic as another, how many pH units would there be between the two?

    asked by Molly on July 26, 2012
  10. math

    the ph of a solution is 3.6 what is it hydrogen ion concentration

    asked by i need help on December 9, 2012
  11. chemistry

    How much ethanol is required to make a 2L of a 70%ww solution?

    asked by Larry on July 28, 2012
  12. College Chemistry

    Determine the pH of a solution that contains 5.3*10^-2 M in HClO4 and 3.0*10^-2 M in HCl?

    asked by Mickey on February 26, 2011
  13. chemistry

    If 16.0 mL of 8.5 ✕ 10-2 M HClO4 is added to 22.0 mL of 7.6 ✕ 10-4 M KOH, what is the pH of the solution?

    asked by Elizabeth on February 23, 2014
  14. Algebra

    Is (1,-4) a solution to the equation y=-2x? I need help finding the answer.

    asked by learner on October 16, 2015
  15. Math 120

    Graph the solution set to the inequality. 2x+3y>12

    asked by Kim on July 15, 2012
  16. math

    x+5y - 6z = 2 kx +y -z = 3 5x -ky +3z =7 For what values of k does the system have a unique solution

    asked by Anonymous on August 13, 2012
  17. Math

    What is the solution to the system of equations shown below? 2x-y+3z=8 x-6y-z=0 -6x+3y-9z=24

    asked by Rachelanne on August 27, 2012
  18. Chemistry

    Calculate the concentration of all species in a 0.15 M KF solution. Ka = 6.4 x 10-4 for HF.

    asked by Brian on February 27, 2011
  19. math

    what is the value of the cordinate of the solution to the system of equations x-2y=1 and x+4=7

    asked by Rolando on February 1, 2010
  20. CHEM

    Calculate the pH of a .7 M solution of ammonium chloride

    asked by Heather on September 22, 2011
  21. CHEM

    Calculate the pH of a .7 M solution of ammonium chloride

    asked by Heather on September 22, 2011
  22. Chemistry

    How do you find the [OH-] of a 1x10^-3 M solution of NH4Cl?

    asked by Linda on February 20, 2014
  23. math

    dy/dx+(1/x)y=3x^2y^3 find the solution using Bernoulli equation

    asked by tish on January 24, 2017
  24. Math

    which ordered pair is a solution of the inequality y≥4x - 5 (3,4) (2,1) (3,0) (1,1)

    asked by I need helppppp on April 30, 2018
  25. chemistry

    What would be the pH of 0.568 g of HClO4 per 250 mL of solution?

    asked by Vaneza ASAP on February 26, 2011
  26. algebra with trig

    how do you solve an inequality and graph it's solution?

    asked by Anonymous on September 29, 2008
  27. Chemistry

    A solution in which [H+] is 1000 times greater than [OH-] [OH-] = ?M

    asked by Matt D on February 26, 2012
  28. trigonometry

    Determine the general solution of 8cos^2x-1=0

    asked by OwamIIi on October 3, 2013
  29. chemistry

    Calculate the pH of a 0.0019 M HNO3 solution. 2.7

    asked by krystal on February 29, 2012
  30. chemistry

    50 mL of 1.50* 10^-2 M HI(aq) is mixed with 75.00 mL of 1.10* 10^-2 M KOH(aq). What is the pH of the Final solution

    asked by reena on February 16, 2009
  31. differential Equations

    Find general solution [t - sqrt(ty) ] dy/dt = y

    asked by George on February 14, 2018
  32. Math

    Is ordered pair a solution to the equation? y = -5;(-3,1)

    asked by KGK on November 22, 2013
  33. algebra

    Solve the inequality. Graph the solution. 2|x+1/3|

    asked by allexelle on April 10, 2015
  34. Math

    What's the difference between one solution and infinitely many solutions?

    asked by Humanoid on January 29, 2015
  35. Math

    solution to (4 x 10^3) x (6 x 10^6) written in scientific notation 24 x 10^9 2.4 x 10^9 THIS ONE 24 x 10^18 2.4 x 10 ^10

    asked by Someone on October 6, 2018
  36. algebra

    -3x-4y =20 x-10y= 16 If x,y is the solution to the system of equations above what is the value of x? A. -14 B. -12 C. -4 D. 16

    asked by Anonymous on October 6, 2018
  37. Algebra

    use substitution to determine if (5,1) is a solution to the inequality 2x+6y

    asked by Melesa Engram on December 2, 2016
  38. Math

    What is the solution to (4 x 10^3) x (6 x 10^6) written in scientific notation? 24 x 10^9 2.4 x 10^9 24 x 10^18 2.4 x 10^10

    asked by Cody on November 12, 2016
  39. chemistry

    what is the [H3O+] of a solution that is .01 M in HOCl and .03 M in NaOCl?

    asked by Audrey on November 13, 2010
  40. Algebra

    Determine if (-4/5,3) is a solution to -5x+7y=25. Show work

    asked by Rand on April 25, 2012
  41. math

    What is the molarity of a 15%w/v HCl solution (GMW=36.46)?

    asked by tiffany on June 17, 2013
  42. chemistry

    Calculate the concentration of all species in a 0.20 M KF solution.

    asked by karen on March 7, 2017
  43. Science

    0.02mole of the HCL and in 2leter of the pH solution

    asked by Anonymous on August 20, 2018
  44. math

    Solve the equation and check your solution 2/5+1/y-5=y-7/5y-25.

    asked by glen on June 18, 2013
  45. science

    What can particles in solution NOT do because ther are so small

    asked by Katherine on November 17, 2009
  46. Algebra

    Solve for x using the addition principle. x+10=-8 The solution x=

    asked by Lisa on May 13, 2011
  47. trigonometry

    Find the general solution for f(x) = 27 tan^2 x-9=0

    asked by lindsay on April 23, 2012
  48. chem

    what is the pH of an aqueous solution that is 0.123M NH4Cl

    asked by help!!! on February 16, 2009
  49. calculus

    if f(x)=Inx, find: f(2)+f(3) solution pls

    asked by gen on November 12, 2010
  50. Economics

    Can anyone walk me through the solution of this problem? 1/2(1600/E)^1/2*50=? Thank You

    asked by Math on February 14, 2018
  51. Vectors

    If ∣x∣=8, ∣y∣=13 and ∣x+y∣=15, determine ∣x-y∣. You may want to draw a diagram to help with your solution.

    asked by Jacob on October 3, 2018
  52. Differential Equations

    Find general solution. 2ty dy/dt = 3y^2 - t^2

    asked by George on February 14, 2018
  53. Chemistry

    What is the pH of a 2.5 x 10-2 M HCl solution? I'm so confused how to find this :(

    asked by Jess on April 24, 2012
  54. Science

    Is toothpaste a mechanical mixture or a solution?

    asked by Dana on September 25, 2010
  55. algerbra

    Identify the solution(s) of the system of equations, if any. 3x+2y=4 5x-4y=3

    asked by robert on September 1, 2014
  56. bio

    How many grams of MgCl2 do you need to make 2 L of a 0.2 M solution?

    asked by K on February 8, 2016
  57. CHEMISTRY

    What is the [H+] in a 0.10 M solution of ascorbic acid,C6H8O6?

    asked by James on April 25, 2012
  58. maths

    using buttons of different colours ,find the solution of 5x-6=9

    asked by abhigyan on June 17, 2013
  59. Chemistry

    Calculate the [h30+] in a 0.010M solution of Sr(OH)2

    asked by Saphire on April 25, 2012
  60. Math

    Which of the following equations has an infinite number of solution? A. 3x - 3 = 4 -4x B. 2y + 4 - y = 16 C. 7x + 5 = 4x + 5 +3x D. 6y - 2 = 2 (y-1)

    asked by SandpitTurtle on January 17, 2014
  61. Chemistry

    How many grams of drug X are in 10 mL of a 1:200 solution of X?

    asked by James on October 23, 2015
  62. chemistry

    How many grams of NaOH are there in 2.5L of a 0.343M solution?

    asked by twynna on February 13, 2011
  63. chemistry

    calculate pH of 0.1M CH3COOH of 100ml of that solution?

    asked by kabelo on February 13, 2011
  64. algerbra

    Identify the solution(s) of the system of equations, if any. -3x-4y=2 8=6x-4

    asked by robert on September 1, 2014
  65. Math

    If the quadratic equation x^2 + bx +c=0 has exactly one solution r, then find b/c.

    asked by Henry on October 2, 2012
  66. algerbra

    Identify the solution(s) of the system of equations, if any. x=1 y=1

    asked by robert on September 1, 2014
  67. chemistry

    calculate pH of 0.1M NH4^- of 100ml of that solution?

    asked by kabelo on February 13, 2011
  68. algerbra

    Identify the solution(s) of the system of equations, if any. -3x-4y=2 8y=-6x-4

    asked by robert on September 1, 2014
  69. Math

    Determine which ordered pair is a solution of y=x2 -2. (-2,6) (5,21) (-1,-1) (-5,24)

    asked by Lost on April 15, 2015
  70. Math

    Find the solution or solutions of the equation: 3^x=3/2x+6 Thank You ;)

    asked by Sal on February 3, 2016
  71. math

    Evaluate:24(12)-9/3. Find the answer and the solution.

    asked by Erica Anne C. Arellano on July 25, 2011
  72. Algebra

    Graph the system below and write its solution. =3x+y−6 =y−1/2x-1

    asked by Anonymous on October 9, 2014
  73. math

    Solve system of equations x+3y=7 (1) x=8-3y (2) no solution

    asked by deedra on January 7, 2009
  74. Chemistry

    Calculate the concentration of OH-(aq) in a solution which [H+] = 100 x [OH-]. Thank you.

    asked by Simone on February 18, 2011
  75. help me plz math

    which ordered pair is not in the solution set of y>2x+1? 1: (1,4) 2: (3,8) 3: (1,6) 4: (2,5)

    asked by Anonymous on January 11, 2009
  76. Math 20-1

    What is the solution for 2x^2-7x>-3? (2 marks) (Show your work)

    asked by Alex on January 29, 2015
  77. math

    which ordered pair is not in the solution set of y>2x+1? 1: (1,4) 2: (3,8) 3: (1,6) 4: (2,5)

    asked by Anonymous on January 11, 2009
  78. MATH

    Decide if the given number is a solution to the given equation. 24/X = 2; 3

    asked by Matt 2000 on November 23, 2009
  79. algebra

    im really stuck on this one What is the solution to the linear inequality y ¡Ý 4x - 5 ?

    asked by Meredith Grey on March 25, 2015
  80. chemistry

    0.450mol of Na2S in 1.50L of solution

    asked by cara on October 3, 2012
  81. Franklin High

    4x - y = 2, 9x - 2y = 8 find solution by substitution method

    asked by liz on June 12, 2013
  82. Math

    Tell Whethter the givin number is a solution of -5 < n. 3. 8 4. -8 5. -4 6. 4

    asked by Dejon on January 10, 2009
  83. Math

    a and b are integers such that the polynomial f(x)=x^4−4x^3−8x^2+ax+b has 1+2i as a solution to f(x)=0. What is the value of 10a+b?

    asked by Crow on June 10, 2013
  84. chem 121

    what is the volume of a 0.750Mmgcl2 solution containing 45.0g of mgcl2

    asked by ngugi on July 2, 2010
  85. math

    Identify the solution(s) of the system of equations, if any. -2x - 4y = 8 8y = -4x - 16

    asked by robert on September 1, 2014
  86. Chemistry

    How many mL of HCl solution are required to change pH from 2.67 to 9.25?

    asked by Rhonda on March 24, 2015
  87. Algebra

    4. Compare the quantity in Column A with the quantity in Column B. Column A The solution of 2(x-3) = 6x Column B The solution of 3x + 2 + 5x + 6

    asked by lizzie on August 7, 2011
  88. Vector & Geometry

    if A= i+j, B= 2i-3j+k and C= 4j-3k find: Ax(BxC) pls help with solution.

    asked by Mathwise on November 4, 2009
  89. Math

    Without solving, explain how you can tell whether the solution to 0.5x= 10 is less than or greater than 1.

    asked by Maya on February 5, 2018
  90. Algebra 1

    Find the solution to the system y=x^2-2x-2 My answer is (-1,1)(7,33)

    asked by Steve on March 30, 2015
  91. Algebra 1

    Hi, What point is a solution to the system of inequalities y >4x and y >-2x-3 (1/2,2)?

    asked by Batman on June 26, 2013
  92. math

    please help simplify (3y/x^4)^-3 1/(1+square root of a) what would be the best solution: (1)/(x-2) +8= (x)/(x-2)

    asked by haley on April 7, 2012
  93. Math

    What does the solution of a system of equation mean? Give one example

    asked by s on May 17, 2011
  94. math

    Determine if(3/8-1 is a solution to 8x-7y=10. Please show all of your work

    asked by christine on August 15, 2011
  95. algebra

    Which ordered pair is a solution of y = x – 4? a. (−1, −5) b. (0, −3) c. (2, 6) d. (3, 1) my answer C (2, 6)

    asked by J J on November 28, 2016
  96. Calculus

    Find the particular solution of the differential equation y"(x) - y(x) = 1+e^x Please help.

    asked by Jane on October 16, 2009
  97. Chemistry

    Calculate the ph of a solution that is 0.157m HCI?

    asked by James on May 4, 2016
  98. Algebra

    solve by elimination: 6a+2b = -48 -6a+b = 57 What is the solution set ( , )?

    asked by Richard on October 11, 2012
  99. math

    Use quadratic formula (3x/x-1)+(2/x)=4 the solution set is ( , )

    asked by Anonymous. on August 23, 2014
  100. math

    Find the solution set for the equation. |3m + 4| + 6 = 12

    asked by Sally123 on September 6, 2018