1. chemistry

    calculate the molarity of 18.0 ml of h2so4 in 2.0l of solution?

    asked by diane on December 5, 2010
  2. Algebra

    what is the solution to (4 x 10^3) x (6 x 10^6), written in scientific notation? A. 24 x 10^9 B. 2.4 x 10^9 ** C. 24 x 10^18 D. 2.4 x 10^10 Is this right?

    asked by Help please on October 4, 2016
  3. Algebra 1A

    solve for the indicated letter b=a+d for a= the solution is a= b. is this correct? thanks

    asked by Lea on September 26, 2009
  4. algebra 1

    Use mental math to determine the solution x/3=24. a. x=6 b. x=8 c. x=27 d. x=72 b is it?

    asked by oto on September 6, 2016
  5. Physics

    Is KNO3 soluble in KOH solution?

    asked by Nisha on September 5, 2016
  6. Chemistry

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

    asked by James on May 4, 2016
  7. algbera

    which ordered pair is a solution of the equation ? 3x+y=0 A.(-1,3) B.(3,-2)c.(-2,3) D.(3,-1)

    asked by lauren on December 9, 2009
  8. Chemistry

    If 38.5 mL of 8.9 ✕ 10-3 M HBr is added to 27.0 mL of 4.6 ✕ 10-3 M LiOH, what is the pH of the solution?

    asked by . on March 10, 2019
  9. CHEMISTRY

    What is the pH of a solution with [H3O+] = 1 x 10-9 M? My answer is pH=9. is that correct

    asked by KKK on December 1, 2014
  10. math

    find the value of k such that the equation e^(2x)=krootx has exactly one solution.

    asked by tom on April 4, 2013
  11. 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
  12. algebra

    solve using the addition principle x + 3/13 = 7/13 what is the solution for x

    asked by thawk on November 8, 2010
  13. Chemistry

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

    asked by Molly on March 4, 2015
  14. chem

    How to find the %(W/V) of 134mL of a 0.610 M solution of Mg(OH)2

    asked by chem on February 16, 2012
  15. Math

    Identify the solution(s) of the system of equations, if any. x + 5y = 7 4x - 5y = 13

    asked by Cathy on January 23, 2015
  16. math

    decide if the given number is a solution to the given equation. x/4 = 5;20

    asked by Diana on September 4, 2009
  17. maths-Linear inequations

    Find the solution (feasible) of following inequations x+ 4y ≤ 24; 3x +y ≤21 ; x+ y ≤9; x≥0 and y≥0

    asked by anoynomous on March 22, 2013
  18. algebra 2

    which point is a solution to the following systems of inequalites -4x+ 5y> 20 8x + 3y < 24

    asked by gege on May 11, 2013
  19. math

    find the solution of the following system of equations x-y=0 x+y=4

    asked by adriana on April 2, 2013
  20. algebra

    determine if (-5/6, -1) is a solution to 6x-5y= -10 show work

    asked by nicole on November 1, 2011
  21. math

    What is the value of t in the solution to this systems of linear equations? 2s – 3t = –1 3s – 4t = 0 a)–5 b)3 c)-7/3 d)4

    asked by joe on April 3, 2013
  22. chemistry

    how many grams of drug are in 75mL of a 4% solution/

    asked by Anonymous on January 15, 2011
  23. Chemistry

    Calculate the pOH of a 0.410 M Ba(OH) solution.

    asked by Anonymous on March 4, 2015
  24. Vectors

    Can you please explain how to answer this? What is a solution for the following system? x-4y+z=2 and -x+4y-2z=8 a) x=4s+12, y=s, z=-10 b) x=s+4, y=3s, z=-4 c) x=2s+5, y=s, z=-12 d) x=s, y=4s, z=-12

    asked by Sara on March 17, 2015
  25. Chemistry

    how can you prepare 300ml of 15% h2so4 solution

    asked by rone on February 18, 2013
  26. math

    How would you use the substitution method to answer 1/3x-2=1 x-6y=3, and what would be the solution?

    asked by Penny on November 2, 2011
  27. Math

    solve for the indicated letter. z=11-y, for y the solution is y= No idea

    asked by scooby9132002 on May 18, 2009
  28. chem

    0.283 M solution X 176.12 g = 50 g/L how many g per 30 mL? 150?

    asked by Anonymous on April 30, 2016
  29. 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
  30. Alegebra 1

    Determine whether (2,11) is a solution to y=17x-13. Thank you before hand, for your help.

    asked by esther on December 19, 2010
  31. math

    determine which ordered pair is a solution of y -5x + 10. A.(-15,5) B.(2,0) C.(-1,-5) D.(3,25) I think it is A, can someone help?

    asked by meow meow kit kat on March 10, 2019
  32. 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
  33. algebra

    would 5 trees be a solution to the inequalit inpart b

    asked by janet on October 30, 2009
  34. Algebra

    x^2-25 over x^2+7x, divided by x^2+7x+10 over x^2+9x+14. I found the solution to be x-5 over x, is this correct?

    asked by Anonymous on September 23, 2009
  35. AP Biology

    Why should we test water with Benedict's solution?

    asked by Coral on November 3, 2007
  36. chemistry

    Determine the Ka of an acid whose 0.294 M solution has a pH of 2.80.

    asked by rena on January 16, 2011
  37. math

    is secA*cosA =1 for all A where 0

    asked by mkc on July 29, 2016
  38. algebra

    Solve. 9x^2 + 12x = 32 x2 + (4/3)x - (32/9) = 0 has two solutions: x = -2/3 + √ 4 or x = -2/3 - √ 4 This is the solution I came up with. Is this right?? Please and Thank you.

    asked by slomo on February 3, 2015
  39. Precalculus

    Solve the inequality and sketch the solution: -3≤ 2(x+4)< 14

    asked by Trevor on January 3, 2010
  40. Science

    could a solution of a liquid and a gas be soda

    asked by becca on January 8, 2008
  41. chemistry

    You have a 0.0825 M solution of HCl. You expect the pH to be

    asked by Anonymous on December 5, 2011
  42. Math

    Which ordered pair is a solution of the equation y = 3x? A. (–2, –9) B. (–8, –18) C. (–8, –3) D. (–10, –30)

    asked by Martin1162 on May 3, 2016
  43. calc

    Find m and b so that y=mx+b is a solution to the differential equation dy/dx=1/2x+y-1

    asked by Mischa on January 24, 2008
  44. math

    Find p(p^-1(x)) when p(x)=x^2-4 I tried solving this and I got x^4-x+20 but that has no solution so I'm a little confused.

    asked by maath on September 15, 2018
  45. chemistry

    Calculate the pH of a 0.0019 M HNO3 solution.

    asked by krystal on February 29, 2012
  46. Chemistry

    What is the H+ concentration for an aqueous solution with pOH = 4.13 at 25 ?

    asked by Pete on November 22, 2010
  47. Chemistry

    What is the solubility of ZnCO3 at 25 o C in a buffer solution with a pH of 9.74?

    asked by Snow on April 28, 2016
  48. chemistry

    Calculate the pH of a 0.0019 M HNO3 solution. 2.7

    asked by krystal on February 29, 2012
  49. algebra

    Find the solution to 36z^2+96z+15=0

    asked by michelle on February 29, 2012
  50. chemistry

    how many moles of Kl are present in 500 ml of a 0.2 M solution?

    asked by Amber on November 25, 2014
  51. algebra

    Solve by completing the square x^2+3/2x=3 What is the solution? x=

    asked by Becky on March 11, 2008
  52. 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
  53. chemistry

    What is the solubility of M(OH)2 in a 0.202 M solution of M(NO3)2?

    asked by Anonymous on April 4, 2009
  54. chemistry

    how would you prepare 300 ml of a 10% CaCl2 solution (w/w)?

    asked by erin on November 29, 2011
  55. biotech

    how would you prepare 300 ml of a 10% CaCl2 solution (w/w)?

    asked by erin on November 29, 2011
  56. English

    The sure solution to unemployement is a better quality of education

    asked by Valencia on April 2, 2013
  57. Algebra 1

    Which ordered pair is a solution of the inequality? y>= 4x-5 3,4 2,1 3,0 1,1

    asked by Steve on December 21, 2014
  58. Pre-calculus ( Absolute value)

    Why does |7 + 3x| = x -1 have no solution? I could plug in, for example 5, and the answer would be positive. Thank you =)

    asked by Lucina on May 10, 2015
  59. Chemistry

    What is the hydrogen ion concentration of a solution whose pH Is 4.10

    asked by Abasiekeme udoh on March 4, 2019
  60. algebra

    Determine whether (-4,5) is a solution of 4x + 8y =1 I would like the steps so I can practice this.

    asked by Help on September 10, 2009
  61. Chemistry

    What is the hydrogen ion concentration of a solution with pH of 3.4?

    asked by Mmeso on September 13, 2018
  62. 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
  63. Differential Equations

    y'=2x+y. Find a solution whose graph is also an isocline.

    asked by Brian on February 14, 2013
  64. Math

    hey i need help with this y = −1 3 x + 2 y = x + 2 What is the solution to the system of equations? A) (0, 2) B) (2, 0) C) (-1, 3) D) (0, -2)

    asked by Abgail on March 22, 2019
  65. Math

    determine which ordered pair is a solution of y -5x 10

    asked by meow meow kit kat on March 6, 2019
  66. chemistry

    The pH of an HCl solution is found to be 1.74. Therefore the [H3O+] is:

    asked by Anonymous on December 5, 2011
  67. math

    solve 5/8x + 1/16x=7/16+= the solution is x=___

    asked by question on July 22, 2009
  68. chem class

    What is the pH of an aqueous solution at 25° that contains 3.98 × 10-9 M hydronium ion?

    asked by jessie on November 20, 2010
  69. general chemistry

    Calculate the molarity of each of the following solutions.70.8 in 2.51 of solution

    asked by kelia on March 7, 2013
  70. math graphing please help

    which graph response the solution to the given system? y=-x+5 y=1/4x+10

    asked by roeeeee on January 23, 2019
  71. maths

    Let S(t) be a solution to the differential equation t dS dt − S = 3 with the initial value S(1) = 1. Which of the following is the value of S(2)? A. 0 B. 2 C. π D. 5 E. −5

    asked by Anonymous on October 25, 2018
  72. Math

    tell whether each ordered pair is a solution of the eguation 3x + y = -11, (-4,1) 2x -y = 4, (3, -2)

    asked by Anonymous on April 28, 2019
  73. Math

    which graph represents the solution to the given system y =-x+4 y = 1/3x + 8 Please help me..

    asked by Luna on January 18, 2019
  74. math

    What is the value of t in the solution to this systems of linear equations? 2s – 3t = –1 3s – 4t = 0 a)–5 b)3 c)-7/3 d)4

    asked by tom on April 2, 2013
  75. Chemistry

    What is the pH of a saturated zinc hydroxide solution?

    asked by Julian on March 18, 2013
  76. Chemistry

    If you had 6 moles in a 600ml of solution, what would be the molarity?

    asked by Jessi on April 21, 2009
  77. honors algebra 1

    3. Which ordered pair is a solution of the equation y=x-4? a. (2,6) b. (6,2) c. (-2,6) d. (3,1) 4. Which ordered pair is a solution of the equation y=5x? a. (-2,10) b. (-5, 25) c. (-3,15) d. (-2, -10) 5. Which ordered pair is a solution of the equation

    asked by Chloe on September 22, 2016
  78. Math

    I need help with this math question What is the solution to - 55 + q = 7? A - q = - 62 B - q = - 42 C - q =42 D - q = 62 My answer is A

    asked by weqwe on September 20, 2018
  79. chemistry

    What volume (mL) of a 3.23 %w/v saline solution contains 69.1 mg of NaCl?

    asked by alex on March 3, 2013
  80. Chemistry 1301

    How many g of NaOH are in 10 ml 0.1 M solution? How do you find this out, what are the steps?

    asked by Thaddeus on April 10, 2013
  81. Differential Equations

    Hello, I am needing help to find the general solution to: dy/dt + y = te' Thanks!

    asked by Thomas on January 27, 2019
  82. math

    determine which ordered pair is a solution of y=2x-3.

    asked by anna on May 5, 2016
  83. calculus

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

    asked by gen on November 12, 2010
  84. Math Problem

    Is this ordered pair a solution of the inequality? (9,17);8x-9x>2

    asked by Lavern on January 15, 2012
  85. math

    Write the general solution to y = arcsin 0.

    asked by bella on April 16, 2019
  86. chem

    the pH of a neutral solution at 90 digree celsias is a >7 b < 7 c =7 d both b and c

    asked by asdfg on September 8, 2016
  87. algebra

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

    asked by allexelle on April 10, 2015
  88. chemistry help

    calculate the PH of a buffered solution of HF and F (Pka of HF is 3.2)

    asked by Anonymous on May 16, 2015
  89. algebra

    graph the system and write the solution -2x+y=6 y=1/2+3

    asked by Anonymous on March 7, 2013
  90. math

    show a graph for solution set 3x>7x+20

    asked by shanae on November 6, 2007
  91. math

    General solution Cos^2 +3sin= -3

    asked by Wayne on May 19, 2013
  92. math

    Which of the following ordered pairs is a solution of the equation y= -4x^2? A. (-2, 16) B.(1, -8) C. (0, -4)***** D. (2, -16)

    asked by nebula🌌 on March 18, 2019
  93. math

    the solution is (2/3,-1/2)(-3,-8) and he formula is f(x)=mx+b given the slope and one point

    asked by valentine on August 5, 2014
  94. Chemistry

    Determine the [OH^-] of a solution that is 0.145 M in CO3^2-.

    asked by Eddie on March 23, 2010
  95. algabra

    Solve and graph the solution set.

    asked by edie on August 19, 2007
  96. science

    the pH of colorless solution is 3. find its [H+] and [OH-] cancentration

    asked by Thomas on September 17, 2012
  97. algebra

    I have to find the solution for (fg)(x) f(x)= -6x-1 g(x)=4x^2 can you show steps please

    asked by Alaska Diamond on September 21, 2013
  98. Chemistry

    How many ml of 1M HCl would you need to make 50.0 mL of 0.125M solution?

    asked by Danielle on February 22, 2011
  99. Chemistry

    How many ml of 1M HCl would you need to make 50.0 mL of 0.125M solution?

    asked by Danielle on February 22, 2011
  100. Algebra 4

    Determine whether the ordered pair is a solution (-8,3);8x+y,-2

    asked by Anonymous on May 12, 2010