# Calculate the pH of the solute in an aqueous solution of 0.0047 M codeine, if the pKa of itsconjugate acid is 8.21. What is the percentage protonation of the solute?

46,915 questions, page 140-
## Math

Find the solution of the given equations. x-1/x^2-9+1/x-3=2/x+3 Thank you! :)

*asked by Gennelle on July 24, 2016* -
## Math

Find the solution to: Solve: 0.9x+9

*asked by Nikki on August 20, 2010* -
## algebra

what is the solution of the following system of equations? y = -2/3x y = 1 a)(1,-2/3) b)(-3/2,1) c)(-2,3) d)(1,-3)

*asked by poo on April 29, 2010* -
## algebra

determine if (-3/10,-2 is a solution to 10x,-9 =15

*asked by vickie on February 11, 2011* -
## math

What is the solution set of the given equation? 4y - 6y + 9y = -2 A){-2/11} B){-2/7} C){2/7} D){2/11}

*asked by nicky on March 8, 2010* -
## math

Find the solution to: Solve: 0.9x+9

*asked by Delores on August 20, 2010* -
## algebra

what is the solution of the system of equations? y=4x+1 y=5x-9

*asked by chelsi on May 14, 2010* -
## math

Area of 7 yd in circle With solution

*asked by naru on September 5, 2014* -
## chemistry

What is the pH of a solution that is 0.20 M CH3COOH and 0.10 M CH3COONa?

*asked by curtis on May 4, 2010* -
## math

Find p such that px^2-12x+4=0 has only one solution. Thank you!!!

*asked by Jane on April 14, 2016* -
## equation and inequalities

Graph the solution of the equation b-15=-12

*asked by lily on December 30, 2014* -
## math

for each inequality tell whether the given value is a solution. a.x+8 > 15 x=4 b. 6x __

*asked by kattie on January 4, 2011* -
## Algebra

f(x)=x/(x+2) and g(x)=4x-2 (A.) Find f of g(1). Is the solution "1/2" correct? (B.) Find g of f of f(2). Is the solution "-6/5" correct?

*asked by C. on November 28, 2009* -
## Algebra

-2 = |m- 1/5 | -2 + 1/5 = |m - 1/5 + 1/5| I know it's No solution but the fraction confuses me.

*asked by Dylan on November 7, 2017* -
## algebra2

i don't think there is a solution for this one. 3-y=1 _____ 4-y y-4 help please

*asked by donna on June 27, 2010* -
## chemistry

you need a solution of 195 mg/dL., what would it be in g/L? [1g=1000 mg, 1L=10 dL]

*asked by taysha on September 4, 2007* -
## Algebra 1A

Help!! solve 2.4x+22.0>55.0-8.6x the solution set is {x]x> ?}

*asked by Paul on September 30, 2009* -
## Algebra 1

What is the solution to the system? use elimination . -18.6x+ 17.2y=90.2 14.2x+ 3.4y= -35.8 a.(3,2) b.(-3,2) c.(2/3,4/9) d.(2,3) IS IT D??

*asked by sierra. on January 5, 2016* -
## math

Which of the following is the complete solution for the equation (x-8) (x+6)=0 1. 8 only 2. 6 only 3. 8 and -6

*asked by carolyn on October 24, 2010* -
## Chemistry

What si the pH of a solution of 10^-8 M HCl in H2O?

*asked by Julie on September 5, 2008* -
## college chemistry

What si the pH of a solution of 10^-8 M HCl in H2O?

*asked by Julie on September 5, 2008* -
## chemistry

what is the ph of a solution formed by dissoving

*asked by sterling hecox on March 7, 2010* -
## Chemistry

How can i prepare a solution of 12 g 50% (w/v) NaOH?

*asked by PAnos on June 17, 2011* -
## Algebra.

What is the solution to the system? use elimination . -18.6x+ 17.2y=90.2 14.2x+ 3.4y= -35.8 a.(3,2) b.(-3,2) c.(2/3,4/9) d.(2,3) IS IT D??

*asked by Sierra. on January 5, 2016* -
## Science

Find the [H+] in a 0.0255 M solution of HF if the Ka = 7.2 X 10^ -4

*asked by Tina on July 29, 2012* -
## Science

What is an example of a liquid and a gas solution

*asked by becca on January 8, 2008* -
## chemistry

What is the molarity of KOH in a solution that has pH of 10.0?

*asked by Nick on April 21, 2011* -
## chemistry

examples of suspension and solution

*asked by jhunmar on September 10, 2008* -
## algebra

What is the solution of the system? y = -3x 3x + 2y =6 I don't get this, please help.

*asked by james on December 16, 2015* -
## Math

Find the solution set of x^2+x+3>0

*asked by JR 8 on October 24, 2016* -
## Math

Which ordered pair is NOT a solution of -4x-9 ? A) (-9, 27) B) (3, -21) C) (-6, 4) D) (5, -28) I think D

*asked by Jamie M on April 12, 2018* -
## algebra 1

What is the solution to -2x+5y=-1 and 3x+2y=11 by using elimination method

*asked by Rosaura on January 17, 2012* -
## Math

i tried and tried and i cant find the answer. is it not a solution. (3/x)-1=7/(x-20)

*asked by monty on November 23, 2009* -
## chemistry

what does 1M solution of sugar stands for?

*asked by edward on June 7, 2013* -
## Math

-5x - 8y = (-3,0) Is this ordered pair a solution

*asked by Ricky on January 16, 2008* -
## math

PLEASE HELP ME!!!!!! what is the solution set of the equation x^2+9=0

*asked by hello123456789 on November 23, 2012* -
## chemistry

What groups would be ionized in a solution of pH 12

*asked by nena on February 25, 2013* -
## Algebra 1A

solve: 7x13

*asked by James on September 28, 2009* -
## Algebra

Which point is a solution of the system? Y=x-9 X+2y=3

*asked by William on January 14, 2008* -
## math

What are the solutions to the systems? y=x^2+6x+7 y=-x+13 A. (-1,14) and (6,7) B. (-1,7) and (6,14) C. (-1,13) and (6,7) D. No solution

*asked by Help me please. on May 14, 2016* -
## algebra2

What is the solution set of 4x squared -3 = 11

*asked by Kathy on February 18, 2014* -
## Math help.

What are the solutions to the systems? y=x^2+6x+7 y=-x+13 A. (-1,14) and (6,7) B. (-1,7) and (6,14) C. (-1,13) and (6,7) D. No solution I think its D.

*asked by Anonymous on May 14, 2016* -
## chemistry

what is the perpose of the phenolphthalein solution?

*asked by Ana on June 23, 2010* -
## math

what is the solution to this problem 6 5x=1296

*asked by tasha on April 27, 2013* -
## Math

what is the solution of the equation shown. -4w+5/3= -13

*asked by Adri on September 23, 2015* -
## math help please

For the following system of equations, what is the x-value of the solution? āx + 2y = 6 6y = x + 18 A.-18 B.0 C.-6 D.3 I think its B??

*asked by Deborah on November 24, 2012* -
## 8th grade

WHAT IS A CHEMICAL SOLUTION AND GIVE AN EXAMPLE?

*asked by DANNY on October 26, 2009* -
## Math

How do you know if an absolute value inequality is "No Solution" or not?

*asked by Angie on January 16, 2009* -
## Algebra

Simplify in terms of i. 1/4 ā-24 Solution: 1/2iā6 ?

*asked by Anonymous on October 27, 2009* -
## Algebra

what is the solution to the system containing the equation ? x + y = -8 and -3x + 2y = 9

*asked by anonymous on April 4, 2011* -
## math

If a polynomial equation p(x)=0 has 3+4i as a solution 3-i 4-3i 4+3i 3-4i

*asked by cj on January 11, 2016* -
## Chemistry

How do we use 2 indicators to confirm the pH of a solution?

*asked by John on November 4, 2014* -
## Math

How do you find the solution set for x^2 + 6x + 9 = 0?

*asked by Anonymous on February 7, 2014* -
## math

Find a solution to the inequality x > 7 A. 9 B. 5 C. 1 D. 7

*asked by Regular Minecrafter on November 17, 2018* -
## CHEMISTRY

How to make a 2% iron solution?

*asked by CHA on July 2, 2012* -
## i dont know how to solve this

Which number is a solution to the inequality 3x ā 2 > 10? A 2 B 3 C 4 D 5

*asked by matt on January 19, 2016* -
## Calculus help!!!

X^2y+sinxy=e^xy i need solution plz

*asked by Daniel on January 12, 2016* -
## math

Which of the following is the solution to the matrix equation below? [0 9 2] [18] [3 2 1] x=[5] [1 -1 0] [-1] a) [-3 -2 18] b) [-3 2 -18] c) [-3] [-2] [18] d)[-3] [2] [-18]

*asked by danny on January 25, 2012* -
## Algebra

Is (0,3) a solution to the equation y = x + 3? My answer is no.

*asked by Faye on August 25, 2014* -
## alg

which of the following is a solution to the equation y = 3x - 1 A.(4,1) B.(2,5) C.(4,3) D.(0,-3) Answer: A

*asked by Help me on September 29, 2017* -
## chemistry

why does a solution of ammonium acetate has a pH=7.5

*asked by jack on March 16, 2011* -
## algebra

Find the solution set for x. x^2 + 8x + 15 = 0 a) (2,4) b) (3,5) c) (-2,-4) d) (-3,-5)

*asked by ant on June 3, 2010* -
## algebra

Which of the following is a solution of the compound inequality? 3x + 8 < 2 or x + 12 > 2 - x

*asked by Joshua on January 23, 2011* -
## General Chem

given the pH (7.15)of a solution at 25deg C what is the H3O+ and OH-

*asked by Jv on October 13, 2012* -
## Biochemistry

What is the concentration of HNO3 in a solution that has a pH of 3.4?

*asked by Freddy on January 24, 2011* -
## algebra

Find the solution set for x. x^2 + 8x + 15 = 0 a) (2,4) b) (3,5) c) (-2,-4) d) (-3,-5)

*asked by ant on June 3, 2010* -
## algebra

I do not understand how the solution to(3/2)x +2=15+x is x=34. Can anyone explain?

*asked by anonymous on May 28, 2010* -
## Algebra

What is the solution to the following equation? 16 = 4x - 4 My answer is 5 because 4 * 5 = 20 -4 = 16

*asked by Faye on August 25, 2014* -
## Math

For the following system of equations, what is the x-value of the solution? -x+2y=6 6y=x+18 a. -18 b. 0 c. -6*** d. 3

*asked by Kaai97 on January 11, 2016* -
## Math

what is the solution to x + 4 = 12? A. X = 16 B. X = 12 C. X = 8 (MY ANSWER) D. X = 4 What is the value of b is 9 + b = -8 A. b = -17 B. b = -1 C. b = 1 D. b = 17(MY ANSWER) What is the solution to q + (-9) = 12? A. q = -21 B. q = -3 C. q = 3 ( MY ANSWER)

*asked by HELPPP 911 HELP on August 25, 2014* -
## algebra

how do you find the solution set to 7/w=8/w - 1/3?

*asked by marie on April 25, 2010* -
## algebra

solve for solution 6m+n=17m-5n=8

*asked by vee on March 16, 2011* -
## Algebra 1 (Ms. Sue or Steve or Reiny)

Solve each inequality. 1). |z -6| + 8 > 5 A: No solution? 2). 2|x -3|

*asked by Anonymous on October 28, 2013* -
## algebra

Can anyone please help with this inequality,(x+20)(x-10)(x+11)>0 The solution set is {x| }

*asked by Daniel on May 29, 2010* -
## maths

Given that x=lg a is a solution of the equation 10^(2x+1)-7(10^x) =26. Find the value of a.

*asked by Lindsay on May 27, 2014* -
## algebra

5-9y-2yblank}

*asked by Carla on May 23, 2011* -
## algebra

each of numbers below is is a solution of the inequality 2x + 3 > 7 .. except ... 3 6 1 5

*asked by ahnaliyah on June 25, 2012* -
## Chemistry

If a solution has a large Kb value, will it have a high pH?

*asked by Alex on January 17, 2016* -
## Chemistry

What is the pH for a solution with a hydrogen concentration of 1.00 x 10^6?

*asked by Adryan on December 6, 2011* -
## Algebra 1

Give an example of an equation and its solution.

*asked by Montereus on April 15, 2013* -
## algebra

2x+3y=1 4x+6y=2 is there a order pair here or is there no solution

*asked by a on November 1, 2009* -
## algebra

determine whether 17 is a solution of the equation 5x+7 = 92

*asked by kelly on January 24, 2012* -
## Chemistry

What is the pH of a 0.200M solution for HBrO? Ka = 2.8 x 10^-9

*asked by Danny on March 25, 2010* -
## math

Solve: Check your solution. 3y - 7 = -3y + - 19

*asked by Anonymous on January 21, 2015* -
## CHEMISTRY

What is buffer, and how does it affect the pH of a solution?

*asked by Taynell on April 5, 2011* -
## math

What is The solution set of 2k^2=21k-49 ?

*asked by Confused on December 5, 2008* -
## algebra 1

help me please What is the smallest solution to the inequality 4 (x -1) > 16?

*asked by jazz on November 4, 2010* -
## Science

If the [H+] in a solution is 1x10^-1 mol/L what is the [OH^-] ??

*asked by Karolina on May 13, 2019* -
## chemistry

How many moles NaOH in 66.4 mL of 0.1 M solution?

*asked by Anonymous on December 8, 2011* -
## Algebra - Math

How do you solve 5y+4=5(y+3)-11 ? when i did it out i got 0y = 22 so no solution but i don't think it's right ?

*asked by Mimi tran on October 15, 2012* -
## math

find the solution set 2x+(3x-(4x-5))=x/4-2 a.28/3 b.-28/3 c.9 d-9

*asked by chevlios on January 22, 2015* -
## algebra 2

Which of the following is the solution to |x|-2

*asked by jacqueline on August 27, 2014* -
## HELP! URGENT!

What is the pH of a 0.030M solution of KF? Ka of HF is .2 x 10^-4. THNX!

*asked by John Parker on November 4, 2010* -
## math

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

*asked by christine on August 14, 2011* -
## collage algebra 1

solution by the substitution method: 4x + 3y =9 3y + 6 = x

*asked by crystal on January 5, 2009* -
## College Algebra

Find solution and Graph y=2x+5 : (8, ), (-1, ), ( , -1)

*asked by BJ on April 23, 2010* -
## chemistry

How to make a 2 Molarity solution?

*asked by Da on January 5, 2009* -
## Chemistry

What is the weight/volume for a 0.2% solution?

*asked by Lane on January 5, 2009* -
## algebra 1

7a+[4a-6b-(8a+2b)] ok so you would get this 7a+[4a-6b-8a-2b]

*asked by tawana on December 5, 2006* -
## Algebra 2

What is the solution set to the following system? x + y = 5 and x^2 + y^2 = 25 A) (0,-5) (-5,0) B) (0,5) (-5,0) C) (0,-5) (5,0) D) (0,5) (5,0)

*asked by Rebecca on June 5, 2016*

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