# 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 76
1. ## math Steve helps me

1.64g of a mixture of cac03 and mgc03 was dissolved in 50ml of 0.8 m Hcl. The excess of acid required 16ml of 0.25< NAOH for neutralization. Calculate the percentage of cac03 and mgc03 in the sample The right answer mgc03 52.02% and caco 47.98% You need to

asked by Fai on December 25, 2013
2. ## chemistry

A solution of a substance was spotted at a distance 0.5cm from the base of a 20cm long chromatographic plate.Upon elution,the solvent front got to a place 0.5cm from the top of the plate.If the component moves half way up the 20cm plate,calculate its

asked by Sirneij on April 13, 2015
3. ## chemistry

Will you help me use the half reaction method to balance these equations. I need to add water molecules and hydrogen ions in acid solutions. I also need to keep the balanced equations in net ionic form. thanks 1) Cl-(aq) + NO3-(aq) --> ClO-(aq) +NO(g) (in

asked by CLO on August 24, 2015
4. ## Pharmacy Technician

RX: Chlorpheniramine 100 ml Lidocaine 2 oz Banana flavoring 1 tsp Take 7ml BID Refrigerator medication at 40°F. 1. What is the final volume in ml? 2. Convert: 40°F = ______ °C=4 3. How many 1oz bottles will this solution fill? 4. How many days will this

asked by Marii on June 19, 2015
5. ## CHEMISTRY

In a coffee cup calorimeter 70.0 mL of 0.100 M AgNO3 and 70.0 mL of 0.100 M HCl are mixed to yield the following reaction. Ag+(aq) + Cl ‾(aq) → AgCl(s) If the two solutions are initially at 22.60°C, and if the final temperature is 23.39°C, calculate

asked by Sarah on April 30, 2012
6. ## analytical chemistry

a 0.4617g sample containing sodium bicarbonate was dissolved and titrated with standard 0.106M of hydrochloric acid solution , requiring 40.72ml. the reaction is: HCO3- + H+ -> H2O + CO2 Calculate the percent sodium bicarbonate in the sample. (Given

asked by zzz on June 16, 2015
7. ## chem

NH4Br has been dissolved into 1 L of water at 25 degrees celcius. the solution has a pH of 5.16. calculate number of grams of NH4Br. I don't even know how to write the equation for this. Could someone please write the water + NH4 equation for me. Thanks :)

asked by Lena on July 24, 2009
8. ## chem

Calculate the volume of 0.200 M acetic acid and the volume of 0.100 M sodium acetate required to make 200.0 mL of a buffer solution with pH = 5.00. The Ka for acetic acid at 298 K is 2.00 x 10-5.

asked by chem on April 4, 2011
9. ## Chemistry

You have isolated compound X from panda pancreas. You started with a whole pancreas, and finished up with 5 ml of a pure solution of X. Assume you got 100% recovery of compound X. You take 300 µl of this solution, and add it to 1.7 ml of buffer. The

asked by Student on November 6, 2016
10. ## chemistry

when writing chemical equations, for example, next to oxygen I have to write (g) for gas and next to other different chemicals I have to write (aq) for aqueous. What do I write next to H2O?

asked by julie on January 8, 2008
11. ## AP Chemistry

Which of the following salts is the most acidic in aqueous solutions? 1. KBr 2. NaI 3. Al(NO3)3 4. BaCl2 5. AgNO3 6. Fe(NO3)2 7. Pb(NO3)2

asked by Anonymous on March 3, 2014
12. ## Math, statistics

Problem 1: The PDF of exp(X) (6/6 points) Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases: For general fX, when y>0, fY(y)= Solution: f_x(ln(y))/y When fX(x) = {1/3,0,if −2

asked by R on March 31, 2015
13. ## chemestry

0.63g of pb powder were disolved in excces nitrate(v) aci to forn leadnitrate solution, all the lead nitrate solution were reacted with sulphate,give the ion equationof the reaction between lead nitrate and sadium sulphate solution?determine the mass of

asked by john on April 16, 2016
14. ## chemistry

An ion can be removed from an aqueous solu- tion by 1. the formation of a gas that escapes. 2. formation of a precipitate. 3. the formation of what is essentially a nonelectrolyte. 4. All of these

asked by cheri on September 19, 2012
15. ## Chemistry

Calculate the mass of solid AgNo3 that can be added to 2.0 L of 0.10M K2CrO4 solution in order to just start precipitation? Here is what I have done so far: 2AgNO3(aq) + K2CrO4(aq) ==> Ag2CrO4(s) + 2KNO3(aq) Ag2CrO4(s) ===> 2Ag^+ CrO4^^2- Ksp =

asked by Student12 on February 27, 2017
16. ## Precalculus

I know I posted this already but.. I don't understand what exactly is the answer, since the answer key shows the intersection of the circle and hyperbole at (-5,0) What about (7.5,0)???? By the way the graph has one intersection point... How do you know

asked by Anonymous on May 24, 2014
17. ## Chemistry

1How would each of the following affect the accuracy of the calculated neutralizing power of antaid (too high, too low, no effect) explain a)The actacid tablet was not cut exactly in half before weighing b)The solution mixture of reacted antacid and excess

asked by David on April 26, 2011
18. ## Chemistry

1How would each of the following affect the accuracy of the calculated neutralizing power of antaid (too high, too low, no effect) explain a)The actacid tablet was not cut exactly in half before weighing b)The solution mixture of reacted antacid and excess

asked by Marie on April 26, 2011
19. ## Chemistry

1How would each of the following affect the accuracy of the calculated neutralizing power of antaid (too high, too low, no effect) explain a)The actacid tablet was not cut exactly in half before weighing b)The solution mixture of reacted antacid and excess

asked by Carl on April 26, 2011
20. ## Chemistry

1How would each of the following affect the accuracy of the calculated neutralizing power of antaid (too high, too low, no effect) explain a)The actacid tablet was not cut exactly in half before weighing b)The solution mixture of reacted antacid and excess

asked by HELP! on April 27, 2011

An unknown compound, X, is though to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa

asked by ron on September 10, 2012
22. ## physics

a toy cart at the end of a string 0.70 m long moves in a circle on a table. The cart has a mass of 2.0 kg and the string has a breaking strength of 40 N. Calculate the maximum speed the cart can attain without breaking the string solution

asked by Anonymous on January 29, 2012
23. ## chemistry

You weigh out an antacid tablet and determine the mass to be 1.1990 g. After taking a 0.2455 g sample of the antacid tablet, you dissolve it in 25.00 mL of a 0.1006 M solution of hydrochloric acid in a 250.0 mL Erlenmeyer flask. After heating the solution

asked by zee on April 2, 2015
24. ## chemistry

A hydrochloric acid So of concentration 1mol/l and a solution S1 of concentration C1= 2×10^-2 mol/l to be prepared from So. The available materials are given below: ● Volumetric pipet: 5ml, 10ml, 20ml ● Beakers: 100ml, 250ml, 500ml ● volumetric

asked by angy on December 13, 2016
25. ## CHEMISTRY

Calculate the amount (in mL) of 1.520M NaOH that is required to add the following acetic acid solution to prepare a buffer with the corresponding pH: 30.00mL of a 5.00% (w/v%) acetic acid; the resulting acetate buffer has a pH of 5.75. pKa of acetic acid =

asked by Jeff on February 18, 2016
26. ## Chemestry

Calculate the freezing point of a solution containing 12.2grams of benzoic acid, C6H5CO2H, dissolved in 250 grams of nitrobenzene, C6H5NO2. The freezing point of nitrobenzene is 7.7 C, and its freezing point depression constant is 7.0 C/m.

asked by Joshua help please on October 26, 2008
27. ## Chemistry (College) URGENT

1.6g of an unknown monoprotic acid (HA) required 5.79 mL of a 0.35 M NaOH solution to reach the equivalence point. Determine the molar mass of the acid and given that the pH at the half way point to the equivalent point is 3.86. Calculate the Ka of the

asked by Tiffany on October 29, 2012
28. ## math

(1) if the second and fourth term of a G.P are 8 and 32 respectively,what is the first term? (i need a practical solution please.) (2)the eleventh term of an A.P is 25 and its term is 3 find common difference? (also need practical solution.) (3)given the

asked by cadarii on December 29, 2010
29. ## Physics

1. Planet X orbits the sun with a mean orbital radius that is 6200 times that of earth. Its diameter is twice that of earth, and its mass is 8 times that of earth. A) Calculate the year of the planet X. B) Calculate the acceleration due to gravity on

asked by Sandhya on April 22, 2009
30. ## Chemistry

A 0.2638 g impure sodium carbonate sample is analyzied by titrating the sodium carbonate with the 0.1288 M hydrochloride solution requiring 38.27 mL. The reaction is CO3^2- + 2H^+ --> H2O + CO2 Calculate the percent sodium carbonate in the sample.

asked by CL on February 21, 2017
31. ## Reverse Equations

a four-component mixture was extracted. In the mixture was R-phenol, RCOOH, RNH2 and R-(C=O)-R in solution with ether and aqueous NaHCO3. RCOO-NA+ was separated out on the water layer. Aq. NaOH was added to the ether layer and R-benzene-O-Na+ was separated

asked by Sheryl on October 7, 2006
32. ## chemistry

I have two solutions of 0.1 Molar. A solution of magnesium chloride and a solution of potassium chloride. I thought that the 0.1 M solution of magnesium chloride would conduct electricity better than a 0.1 M solution of potassium chloride. I did a lab in

asked by charlie on May 11, 2011
33. ## Chemistry

If 1.22 grams of magnesium reacts with 100 ml of 6.02 M HCl solution. How much heat is evolved? Density of the HCl solution is 1.10 g/ml. Assume the specific heat of water 4.184 J/gC is the specific heat of the solution. Mg  +  2 HCl   à  MgCl2  +

asked by Anonymous on July 17, 2012
34. ## Chemistry

A sodium chloride solution has a density of 1.22 g/mL. How many moles of NaCl are dissolved in 10.0 mL of the solution? The density of water is 1.00 g/mL. My solution: ? mol NaCl = 10 mL*1.22 g/1mL*1mL/58.5g The correct answer is 3.76E-2 mol. Please help!

asked by Anonymous on March 22, 2015
35. ## Chemistry

1000g of a 50%(mass percentage) nitric acid solution is to be dil ute to 20%(mass percentage) nitric acid solution.how many lit ers of water should be added to the starting solution?

asked by Dewa on October 27, 2011
36. ## Science

What is the molarity of a solution of sodium hydroxide, NaOH, if 23.64 mL of this solution is needed to neutralize 0.5632 g of potassium hydrogen phthalate (KNaP)?

asked by Mini on February 5, 2009
37. ## chemistry

what mass, in grams of nacl formed from the reaction of 2.75ml of a 6.00M Na2SO4 solution and 8.30ml of a 2.50M solution of HCL

asked by bayor on November 15, 2013
38. ## Chemistry

a solution made by dissolving 2.733g KH2PO4 and 4.508g K2HPO4 in water to give 250 ml of solution. is the answer... 7.432= ph

asked by yes on February 7, 2015
39. ## Chemistry

If each of the salts listed in A through E were dissolved in water to make a 0.1 M solution, which solution would have the lowest pH? a. NaNO2 b. NaF c. AlCl3 d. KNO3 e. Na3PO4

asked by Brian on February 27, 2011
40. ## chemistry

how many ml of 0.655 M phosphoric acid solution is required to neutralize 15 ml of 1.284 M NaOH solution, write a balanced chemical equation

asked by Anonymous on March 12, 2015
41. ## math

a drug is supplied as a 20 mg/ml solution in a 50 ml vial. you need to make 15 ml of a 10 mg/ml solution. how much concentrate and how much diluent are needed to obtain the desired final volume?

asked by kate on July 9, 2014
42. ## Chemistry

How would you prepare 10.0 Liters of a solution that was 20 parts per million sodium perchlorate in water? What would be the molarity of the solution (assume density is 1.0 g/mL and 1ppm=1 mL/L)?

asked by John on February 14, 2012
43. ## Written Analysis

I need help with my project. I have to write 4-6 paragraphs summarizing three solution ideas on Discrimination. I also have to develop criteria or standard that can be used to evaluate the final solution.

asked by keri on November 11, 2011
44. ## Chemistry

What is the concentration, in g/L, of a solution containing 0.65 mol HNO3 in 150 mL solution? Give your answer rounded to nearest whole number, followed by a space and the units.

asked by Sonakshi Sinha on June 13, 2012
45. ## Science ap chem

For which of the following solutions must we consider the ionization of water when calculating the pH or pOH? (a) 3 × 10−8 M HNO3 (b) 0.10 g HCl in 1.0 L of solution (c) 0.00080 g NaOH in 0.50 L of solution (d) 1 × 10−7 M Ca(OH)2 (e) 0.0245 M KNO3

asked by Anonymous on March 11, 2016
46. ## chemistry

How many milliliters of a solution of 0.0013 M EDTA4- would be used to titrate the lead in 1000. mL of a 0.0073 M solution of Pb(NO3)2? I'm sry, but I keep getting 5200ml and I know that's just wrong! >< can someone please help me?

asked by Miss on October 24, 2011
47. ## For Anubhav

re http://www.jiskha.com/display.cgi?id=1368707176 I have a solution, but what a mess. Before I type it all out, let me know if you still need the solution. I certainly don't feel like typing it all out unless you will actually look at it.

asked by Reiny on May 16, 2013
48. ## Chemistry

How many milliliters of 0.201 M Ba(OH)2 solution are needed to completely neutralize 12.8 mL of 0.369 M HNO3 solution? The reaction is Ba(OH)2(aq) + 2HNO3(aq) → Ba(NO3)2(aq) + 2H2O(l)

asked by Mary on November 1, 2011
49. ## Chemistry

I am having trouble with how to approach this problem. I have the solution but can't figure out how to get it. How many moles of NaOH must be added to 1.0 L of 2.0M HC2H3O2 to produce a solution buffered at each pH? a) pH=pKa b)pH=4 c)ph=5

asked by Larry on April 12, 2010
50. ## Chemistry

A complex ion, [M(OH)6]4-, is orange in solution. Which of the following ligands, when bound to the same metal might cause the solution to be blue? Cl- CN- CO F- H2O I- NH3 NO2- OH- NCS-

asked by Kourtney on November 9, 2011
51. ## Chemistry

A student has 600.0 mL of a 0.30M solution of HNO3. How much water must she add in order to make it a 0.15 M solution? Be careful how this question is answered.

asked by Katie on March 14, 2014
52. ## chemistry

I am having trouble with how to approach this problem. I have the solution but can't figure out how to get it. How many moles of NaOH must be added to 1.0 L of 2.0M HC2H3O2 to produce a solution buffered at each pH? a) pH=pKa b)pH=4 c)ph=5

asked by heather on April 12, 2010
53. ## Chemistry

A nitric acid solution is found to have a pH of 2.70. Determine [H3O+],[OH-], and the number of moles of HNO3 required to make 5.50L of the solution.

asked by Jessica on April 24, 2011
54. ## chemistry

What volume of distilled water should be added to 500ml of a solution of sulphuric acid to 90% by weight, density 1.81 g.mL-1, to obtain a 10 Molar solution?

asked by Shania on September 4, 2017
55. ## chemistry

a solution is made by mixing 38.0 ml of ethanol C2H6O, 62.0mL of water. assuming ideal behavior, what is the vapor pressure of the solution at 20 C

asked by cindy on October 10, 2014
56. ## chemistry

to clean a clogged drain, 26 g of sodium hydroxide is added to water to make 150 ml of solution what are the pH and pOH values for the solution?

asked by Caitlin on April 18, 2010
57. ## CHEM 102

A solution of volume 0.500 L contains 1.70g NH3 and 4.15g (NH4)2SO4. What is the pH of this solution? Answer obtained was 9.76, however it states that it is slightly off...

asked by Calvin on October 21, 2011
58. ## chemistry

If 0.694 grams of pure KHP are needed to exactly neutralize 30.5 mL of a calcium hydroxide solution, what is the concentration (in molarity) of the base solution?

asked by andrea on September 15, 2011
59. ## CHEMISTRY- vant hoff

a 0.100m k2so4 solution has a freezing point of -0.43 degrees. what is the van hoff factors for this solution? kf=1.86degree/m? 0.77 3.0 1.0 2.3 i have used the equation dT=iKfm and get -2.3?

asked by lulu on October 14, 2010
60. ## Chemistry

a solution is prepared by adding 5g of ammonia,Nh3, and 20g of ammonium chloride, NH4Cl , to enough water to form 2.5 L of solution. What is the ph of the buffer? Kb= 1.8*10^-5

asked by Anthony on April 19, 2018
61. ## chemistry

Too make a 4% solution of paraformaldehyde from a 20 % solution. C1V1=C2V2 (20)(10ml)= (4)(x) x= 50ml so I would need to add 45ml of PBS and 4ml of the paraformaldhyde. Is that right.

asked by Tanya on September 9, 2007
62. ## Chemistry

Indicate the concentration of each ion present in the solution formed by mixing the following. Assume that the volumes are additive: 3.60 g of KCl in 76.5 mL of 0.274 M CaCl2 solution [K+] = [Cl-] =

asked by Sam on March 13, 2013
63. ## maths

A solution of acid was found to have a pH of 1.50. What is the hydrogen ion concentration of the solution? (Give your answer in scientific notation to 3 significant figures.)

asked by bronson on December 28, 2008
64. ## Chemistry

use the Hendeson-Hasselbalch equatio. To calculator the pH of a solution at is A) 0.15 M on C5H5N and 0.10M in C5H5NHCl. Kb:1.7x10^-9 B) 15.0 g of HF and 25.0g of NaFin 125 ml of a solution. Ka 3.5x10^-4

asked by Jill on April 1, 2013
65. ## Chemistry

Write the net ionic equation for the reaction that takes place between a solution of magnesium chloride and a solution of sodium hydroxide.

asked by Unknown on June 26, 2012
66. ## chemistry

To clean a clogged drain, 26 g of sodium hydroxide is added to water to make 150 mL of solution. What are the pH and pOH values for the solution?

asked by Ross on April 6, 2008
67. ## science

A student is all 32 gram of potassium nitrate in water to prepare 200 ml of solution what is the concentration of solution in terms of mass by volume

asked by PARNEET on June 9, 2017
68. ## Chemistry

When 1 mol of gaseous hydrogen chloride is dissolved in enough water to make 1 L of solution, approximately how many HCl molecules remain in the solution?

asked by Joe Schmo on May 15, 2011
69. ## chem

The molar mass of hydrogen fluoride, HF, is 20.0 g/mol. If 17.0 grams of HF are dissolved in water to give 200.0 mL of solution, what is the molarity of this solution?

asked by angel on November 12, 2015
70. ## Chem 1010

Determine the molarity of a solution made by dissolving 13.8 g of sodium chloride in enough water to make 750.0 mL of solution. (The MM of NaCl is 58.44 g/mol)

asked by Sirena on April 15, 2012
71. ## Algebra

Solve using the elimination method.Show work.If the system has no solution or an infinite number of solution state ths...-5x+4y=-16,-15x+2y=-58

asked by sherry on March 22, 2012
72. ## Chemistry

A solution that contains 2.047 x 10^-1 M of acid, HA, and 1.808 x 10^-1 M of its conjugate base, A-, has a pH of 4.196. What is the pH after 1.629 x 10^-3 mol NaOH is added to 5.961 x 10^-1 L of this solution?

asked by Summer on January 21, 2012
73. ## chemistry.

2.02g of KNO3 ( Mz=101) is dissolved in sufficient water to prepare 0,500 dm3 of solution. What is the concentration of this solution in mol dm?

asked by Mark on November 5, 2009
74. ## science

Compound A is provided as a 500mM solution. If 12.5 mL is taken and added to 12.5mL of water, how many moles (or millimoles / micromoles) are there per 0.1mL of the diluted solution?

asked by jake on December 9, 2011
75. ## Chemistry

What is the concentration of salt in some optical saline solution if 4.0 miles of sodium chloride, NaCl, are dissolved in a total of 3 liters of solution? A) 98 M B) 81 M C) 2M D) 6M

asked by Luis on June 7, 2018
76. ## Chemistry

100 mL of buffer solution that is 0.15M HA (Ka= 6.8x10-5) and 0.20M NaA is mixed with 21mL of 0.35M NaOH. What is the pH of the resulting solution?

asked by Linda on September 29, 2018
77. ## Chemistry

What is the final concentration of a solution if 15-mL of a 2.4-M solution was diluted to 100-mL and this process was repeated two more times? Please help me how to work out the problem. I am not just looking for an answer. I really want to learn.

asked by Evin on April 24, 2016
78. ## chemistry

Potassium bromide has a solubility of 80g/100ml of H20 at 50º C. A saturated solution would be equivalent to a ____________-molar solution?

asked by ishaan on June 10, 2010
79. ## chemistry

3. Compound A is provided as a 500mM solution. If 12.5 mL is taken and added to 12.5mL of water, how many moles (or millimoles / micromoles) are there per 0.1mL of the diluted solution?

asked by jenny on December 8, 2011
80. ## chemistry

We add excess NaCl solution (58.44 g/mol) to 64 mL of a solution of silver nitrate (AgNO3 169.88 g/mol), to form insoluble solid AgCl. When it has been dried and weighed, the mass of AgCl (143.32 g/mol) is found to be 1.91 grams. What is the molarity of

asked by Jake on September 20, 2010
81. ## chemistry

Determine the pH of a solution prepared from 1.0 L of a 0.10 M solution of Ba(OH)2 and excess Zn(OH)2 (s). The Ksp of Zn(OH)2 is 3×10^-15 and the Kf of Zn(OH)4^2- is 2×10^15.

asked by Kevin on April 1, 2019
82. ## chemistry

the molarity of a solution containing 40 grams of NaOH in 100 ml of solution is

asked by willie on July 13, 2011
83. ## Chemistry

The Molarity of a solution that contains 50.0g BaF2 in 700.0ml solution is: A. 0.41 B. 0.29 C. 2.5

asked by Eric on March 5, 2011
84. ## Chemistry

How much of a 5.2M sucrose solution should you use to make 81.0mL of a 0.040M solution?

asked by Aleseva on December 13, 2014
85. ## Chemistry

What happens when red blood cells are placed in a solution that contains 0.99% (m/v) NaCl solution?

asked by Elisabeth on July 12, 2012
86. ## Chemistry

How many mL of a 6 M HCl solution are required to prepare 200 mL of a 0.2 M solution?

asked by Brea on June 20, 2011
87. ## Chemistry

What volume(ml) of 8.0 M solution is required to make 134.3 ml of 1.2 M solution

asked by Linzy on April 8, 2013
88. ## Chemistry

The ph of a solution is 9.55 at 25degree celcius. What is the hydroxide-ion in the solution?

asked by Sophie on April 2, 2015
89. ## Chem

If the pH of a solution at 25.00 degrees celsius is 2.37, the pOH of the solution at that temp is:

asked by Dawn on December 12, 2012
90. ## chemistry

explain why you get two different pH values for same solution when calculating and using pH meter of same solution?

asked by kabelo on February 11, 2011
91. ## Math 116 algebra please check

Solve by elimination method 2x + 3y =1 4x + 6y =2 What is the solution of the system N there is no solution

asked by jay jay on July 16, 2008
92. ## Chemistry

what is the molarity of the following solution? 13.8g of potassium trioxocarbonate (IV) in 200cm^3 of solution

asked by Hayzed on February 12, 2017
93. ## ALGEBRA-Help please

Find the solution to the following system of two linear equations, if it has a solution. x+3y=4, 3x+9y=12

asked by Megan on October 13, 2011
94. ## Chemistry

A solution has a volume of 2L and contains 36g of glucose, what is the molaritiy of the solution?

asked by Bobbi on April 19, 2011
95. ## Chemistry

What volume of a 4.50 M KI stock solution would you use to make 0.455 L of a 1.25 M KI solution?

asked by Daryll on February 19, 2017
96. ## chemistry

what volume of water is required to make 0.20 M solution from 16 ml of 0.5 M solution?

asked by prateek on May 26, 2013
97. ## Chemistry

What volume of 0.867 M solution is required to make 3.50 L of a solution with pH of 12.5?

asked by stephanie on March 16, 2012
98. ## chemistry

What volume of a 3.90 M KI stock solution would you use to make 0.430 L of a 1.25 M KI solution?

asked by john on February 19, 2017
99. ## Algerba

Which solution set best fit the solutions of -1.5^2+4x+2.2=0 2.2 and 3.1 or this one... no real solution -0.5 and 2.2 -0.5 and 3.1

asked by Jass on February 18, 2017
100. ## Algebra 1

quadratic equation. ax^2+bx+c=0 Solution 1,only solution. Can you help me I am struggling to work this out.

asked by Cynthia on July 3, 2008