1. chemistry

    Calculate the PH of unbuffered solution after adding 1ml of 0.1M NaOH to 100ml of the solution .PH of unbuffered solution 4.74 .acetate

    asked by Marshet on December 19, 2018
  2. chemistry

    A solution contains 1.72 10-3 M Ca(NO3)2. Determine the mass of the Ca2+ ions in 1.8 mL of this solution. How many nitrate ions are there in 3.0 10-6 L (3.0 µL) of this solution? (i keep doing these two wrong but not sure why)

    asked by katiy on April 24, 2012
  3. Math

    3. What is a quick way to tell other 8th graders how to tell if an equation will have one solution, no solution, or infinite solutions? Explain how you know and why the equation will have the solution(s) that it does. Help.

    asked by lord lorde on January 18, 2019
  4. calculus

    What quantity of 65 per cent acid solution must be mixed with a 25 percent solution to produce 384 mL of a 50 per cent solution?

    asked by Julie on January 22, 2010
  5. science

    30 ml KMnO4 solution is required to titrate 25 ml M/50 oxalic acid solution.find the molarity of KMnO4 solution and g/L also.

    asked by Prince on October 25, 2013
  6. UCI

    A student is given a stock solution of 1.54E-04 M. How much stock solution is needed to make 100 mL of a 1.60E-05 M solution?

    asked by Anonymous on April 9, 2010
  7. chemistry

    need help with these problems: The concentration of glucose in blood is usually about 0.10% (w/v). If 7.0 L of blood are in an average man, how many grams of glucose are in his blood? To obtain the solute for 118 g of a 19.2% (w/w) solution of sugar we

    asked by ellen on July 20, 2010
  8. Energy

    Without energy we can't do work cuz we can't apply ne force on an object. Gravity, itself a force, when, say, pulls a ball down to the gorund it actually does work. Now for that force, where does it get the energy from or what type of energy does it have?

    asked by Mike on June 20, 2005
  9. Math

    Use your knowledge of exponents to solve. a) 1/2^x=1/(x+2) b) 1/2^x>1/x^2 So I know that these functions are rational functions.. and I am trying to solve for x. I tried to solve them by I keep getting stuck with the exponent 2 which is the exponential

    asked by Halle on June 7, 2009
  10. equations & inequalities

    1.simplify this expression 4p+9+(-7p)+2=? a.3p+11 b.3p+7 {c.-3p+11} d.11p+11 2.solve this equation 4y+228=352 a.y=-31 {b.y=31} c.y=145 d.y=3 3.solve this inequality 3p-16

    asked by cali on December 15, 2013
  11. Algebra

    Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a)The sales representative informs you that there are two floor plans still available, and that there are a total of 56

    asked by Dolores on July 18, 2009
  12. Algebra

    1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and that there are a total of 56

    asked by Carol on December 24, 2008
  13. Chemistry

    A solution is prepared using 15.0 mL of 1.0 M HCl and 20.0 mL of 0.5 M HNO3. The final volume of the solution is 1.25 L. What are the [H3O+] and [OH-] in the final solution? What is the pH of the final solution? Ok. I got 0.015 mol HCl and 0.1 mol HNO3. Do

    asked by Heather on May 22, 2010
  14. Thermodynamics

    Streptomycin, an antibiotic, is produced on a large scale in the United States. The purified solution contains 50 wt% streptomycin water. Preparation of 500 mL intravenous (IV) drip solution bag requires addition of diluent and preservative. The diluent

    asked by debbie on January 31, 2012
  15. Math

    While traveling for vacation, you have decided to divide your lodging between a resort and a regular stay hotel. Let x represent the number of nights you will spend in a resort and let y represent the number of nights you will spend in a regular stay

    asked by Anonymous on December 9, 2015
  16. math

    um take home test...i have no idea what im doing always sometimes never 1. sin2x=2sinx 2. cos (pie/3+x)=-sinx 3. if tan x=3 and tan y=2 then tan (x+y)=5 4. when you use the half angle formulas you choose whether to use a + or - by noting in which quadrant

    asked by allison on June 11, 2006
  17. English

    1. She doesn't like it. Show her another. 2. She doesn't like it. Show her the other. 3. She doesn't like it. Show her others. 4. She doesn't like it. Show her the others. (Are the sentences all grammatical? Which ones are commonly used?)

    asked by rfvv on August 26, 2011
  18. Calculus

    solve this equation on the given interval expressing the solution for x in terms of inverse trigonometric functions. 6(cosx)^2-cosx-5=0 on (pie/2, pie)

    asked by Josh on October 10, 2011
  19. 8th grade

    need help thank-you translate the verbal phrase into an inequality, then solve the inequality and graph your solution, the product of 6 and the difference of 6x and 3 is less than or equal to the product of -2 and the sum of 4 and 8x

    asked by Zach on December 7, 2009
  20. Algebra 1A

    could someone please help and check my answer thank you. simplify your answer, type an inequality symbol, then type an integer or a decimal solve 7 x + 2

    asked by Terri on October 30, 2009
  21. Math .

    3(4x - 2) = 2(6x - 3) one solution infinite solutions ** no solution a+5 = 1/5(5a + 25) one solution infinite solutions no solution ** 3(4x - 3) - 7x = 5x - 9 one solution infinite solutions no solution 8+2(8x - 6) (choose all that apply) 2(4x + 7) 9x –

    asked by Tii on September 30, 2014
  22. English

    1. I prefer working to doing nothing. 2. I prefer to work rather than to do nothing. 3. I prefer to work rather than do nothing. 4. I prefer to work to to do nothing. 5. I prefer to work to do nothing. [Are the sentences from #1 to #3 correct? Which ones

    asked by rfvv on September 9, 2018
  23. COM 155

    My favorite television show is Teen Mom. I am very surprised at how amazing the show actually is. The show is about four courageous women who instantly gave up their childhood to become mothers. It also shows how hard it is to finish school and take care

    asked by Renee on August 21, 2011
  24. Communication Language Studies

    Most modern style manuals endorse the elimination of sexist language. Would the reduction of sexist language influence the thoughts or attitudes of individuals who comply with these standards? Why or why not?

    asked by Jessica on March 13, 2010
  25. Physics 11

    A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done. I've already answered & gotten this question correct, however it made me confused about the concept. I found Ek. & Ek to find change in Ek which was

    asked by Kayla on May 30, 2017
  26. CHEMISTRY HELP

    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 Mike on February 19, 2016
  27. algebra

    define a variable, write an iquality, and solve the problem below. then check your solution. "seven minus two times a number is less than three times the number plus thirty-two" 7-2*x

    asked by TEXAS BILL on January 4, 2010
  28. Math

    Can you guys please check my answers? Evaluate x/y for x = 2/3 and y =6/7 1. 7/9 2. 8/10*** 3. 9/12 4. 12/21 Simplify the expression (3/7^2) 1. 3/7 2. 6/14 3. 9/49*** 4. 5/9 What is the simplified form of the expression 7[63 ÷ (52 – 22) – 1]? 1. 10 2.

    asked by unknownchild on January 10, 2018
  29. Chemistry

    A 0.040M solution of a monoprotic acid is 14% ionized. Calculate the Ka for the weak acid. ---------------- so: HX H+ + X- Ka= [H+][X-]/ [HX] Since its a monoprotic acis i know the concentration of H and X will be equal And the HX will be 86% (100%-14%)

    asked by Saira on July 15, 2009
  30. math

    solve each triangle using either the Law of Sines or the Law of Cosines. If no triangle exists, write “no solution.” Round your answers to the nearest tenth. A = 23°, B = 55°, b = 9 A = 18°, a = 25, b = 18

    asked by Rick on December 9, 2011
  31. chemistry half reactions

    How do i solve this half reaction with Mg(OH)2(s) --> Mg(s)? Complete and balance the displayed half reaction in basic aqueous solution taking into account the electrons. Mg(OH)2(s) → Mg(s)

    asked by Confused on November 23, 2010
  32. math

    define a variable, write an iquality, and solve the problem below. then check your solution. "seven minus two times a number is less than three times the number plus thirty-two" 7-2*x

    asked by samir on January 4, 2010
  33. math

    A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished?

    asked by mini on May 2, 2017
  34. MATHS HELP URGENT(TIME AND WORK)

    A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished?

    asked by JACK on January 1, 2016
  35. math

    solve the given inequality and graph its solution on the number line 2-x/3less than or eqaul to (

    asked by mimz on November 21, 2010
  36. college chemistry

    In class, we discussed the titration of a 50.0 mL sample of 0.100 M HCL with a 0.100 M solution of NaOH. How would this system change if we used a 0.100 M solution of Sr(OH)2 instead of NaOH? To answer this question, complete each of the following: a) What

    asked by Aubree on April 21, 2010
  37. physics

    Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 95.0 kg, down a θ = 50.0° slope at constant speed. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves

    asked by Karina on July 9, 2015
  38. Court system

    I need to write a 200-300 word response comparing the state court system in Ohio and the federal court system. Compare these two by structure, source of laws and they types of cases that are heard.

    asked by Ron on October 6, 2008
  39. Physics

    200 g of ice at 0ºC put in 500 g of water at 20C. The system is in a container with negligible heat capacity and which is isolated from surroundings. a)What will be the final temperature (at equilibrium) of the system? b)How much ice is melting?

    asked by Zhenya on October 25, 2015
  40. History

    How did the British Colonial System in Virginia differ from the Spanish system in Central America and the Caribbean? Explain the differences in the reasons for colonization and the differences in the way their colonies were set up (address both economic

    asked by Michelle on September 5, 2012
  41. Math/Physics

    A car of mass 0.9 tonnes is driven 200 m up a slope inclined at 5° to the horizontal. There is a resistance force of 100 N. (i) Find the work done by the car against gravity. (ii) Find the work done against the resistance force. (iii) If the car slows

    asked by Autumn on January 8, 2018
  42. Math

    The Mountain Trail Resort sold 64 condominiums last year, all 1, 2, or 3 bedroom condominiums. The total revenue from the sale of the condominiums was $5,493,000. The combined square footage of all the condominiums sold was 51,544 square feet. One bedroom

    asked by please help(: on November 2, 2009
  43. MATH!

    The Mountain Trail Resort sold 64 condominiums last year, all 1, 2, or 3 bedroom condominiums. The total revenue from the sale of the condominiums was $5,493,000. The combined square footage of all the condominiums sold was 51,544 square feet. One bedroom

    asked by hmmm... on November 2, 2009
  44. MATH!

    The Mountain Trail Resort sold 64 condominiums last year, all 1, 2, or 3 bedroom condominiums. The total revenue from the sale of the condominiums was $5,493,000. The combined square footage of all the condominiums sold was 51,544 square feet. One bedroom

    asked by hmmm... on November 2, 2009
  45. math

    Aj bought a portable game system on sale for $150.the portable game system was 70% of the regular price.aj concluded that the original price of the portable game system must have been $225. Aj correct? justify your answers part b is 70% of an original

    asked by jessica on March 19, 2016
  46. Math

    Let Alpha and Beta be the zeros of the cubic polynomial x^3 + ax^2 + bx + c satisfying the relation Alpha * Beta -1 = 0. Prove that : c^2 + ac + b + 1 = 0. Please work the complete solution

    asked by Steve on April 27, 2013
  47. Math

    Let Alpha and Beta be the zeros of the cubic polynomial x^3 + ax^2 + bx + c satisfying the relation Alpha * Beta = 0. Prove that : c^2 + ac + b + 1 = 0. Please work the complete solution.

    asked by Watson on April 23, 2013
  48. Math

    Let Alpha and Beta be the zeros of the cubic polynomial x^3 + ax^2 + bx + c satisfying the relation Alpha * Beta = 0. Prove that : c^2 + ac + b + 1 = 0. Please work the complete solution.

    asked by Watson on April 23, 2013
  49. Chemistry

    A system at equilibrium contains I2(g) at a pressure of 0.23 atm and I(g) at a pressure of 0.24 atm. The system is then compressed to half its volume. Find the pressure of I2 when the system returns to equilibrium. Find the pressure of I when the system

    asked by Anjali on February 25, 2012
  50. pgcc

    A system at equilibrium contains I2(g) at a pressure of 0.23 atm and I(g) at a pressure of 0.24 atm. The system is then compressed to half its volume. A).Find the pressure of I2 when the system returns to equilibrium. B).Find the pressure of I when the

    asked by ben1987 on February 19, 2013
  51. Chemistry

    Calculate the pH of a buffer solution made by mixing 231 mL of a 1.04M trimethylamine (CH3)3N solution with 176 mL of a 1.38M trimethylammonia chloride, (CH3)3NHCl solution. Enter your answer to TWO decimal places. DO NOT use scientific notation.

    asked by Bill on November 23, 2014
  52. Chemistry

    A student dissolves 18.9 grams of Zn(NO3)2 [molar mass = 189] in enough water to make 500.0 of solution. A 100.0 ml portion of this solution is diluted to 1000.0 ml.What is the [NO3¯ ] in the second solution? A) 0.0100M B) 0.0200M C) 0.0300M D) 0.0400M E)

    asked by Paul on February 9, 2011
  53. CHIMIE

    On mélange 90cm3 de solution de sulfate de baryum 1,5N avec 75cm3 d'une solution de sulfate disodique 0,6M 1-calculer la force ionique de la solution saline ainsi obtenue? 2-En déduire la valeur du coefficient d'activité de Na+? MERCI

    asked by RAHIL on December 14, 2013
  54. Chemistry

    A student dissolves 18.9 grams of Zn(NO3)2 [molar mass = 189] in enough water to make 500.0 of solution. A 100.0 ml portion of this solution is diluted to 1000.0 ml.What is the [NO3¯ ] in the second solution? A) 0.0100M B) 0.0200M C) 0.0300M D) 0.0400M E)

    asked by Paul on February 8, 2011
  55. business writing

    -----Identify a problem at work or organization to which you belong. Conduct research that would help your workplace or organization solve this problem, or attend some relevant training or workshop that would provide you with such information. -- I am

    asked by Singh on July 27, 2007
  56. Chemistry

    The molecular mass of glucose is 180g/mol. you prepare a stock solution of glucose, by dissolving 1.8g of glucose in water to a final volume of 1.0L. The stock solution was then diluted as follows: a. 50mL of the stock solution is added to 450mL of water,

    asked by Titania on August 29, 2011
  57. Nedd Help Please - PreCalc

    The coordinates of the five quarter points for y=sin(x) are given below. Use these quarter points to determine the y-coordinates of the quarter points of y=2sin(1/4x). (0,0) (π/2,1) (π,0) (3π/2,−1) (2π,0) ​(Type ordered pairs. Type exact​

    asked by chizoba on July 31, 2016
  58. Chemistry

    A given solution contained potassium chloride, KCl, and hydrochloric acid. 25 cm3 of it needed 24.80 cm3 of 0.0986 M sodium hydroxide solution to neutralize the acid, and the neutral solution then required 23.55 cm3 of 0.2 M silver nitrate, AgNO3, solution

    asked by Desirai on October 6, 2014
  59. AP Chemistry

    Consider the following reaction: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) 0.103 g of Zn is combined with enough HCl to make 50.0 mL of solution in a coffee-cup calorimeter. As all of the Zn reacts, the temperature of the solution increases from 22.5°C to

    asked by Kelly on March 13, 2018
  60. Chemistry/Physics

    I'm not sure how to do this. Determine the actual ratio of 18O:16O for the following substances. a) Snow falling in Greenland at a temperature of -20 degrees C b) Water vapor in equilibrium with VSMOW c) Pore-water from sediments in the North Atlantic

    asked by Dion on February 17, 2013
  61. sites for algebra

    I am tutoring an 8th grader in algebra. Does anyone know of a website that I can use to give him problems to solve and I can go back and monitor his progress via the web. Or, any suggestions on tutoring. The child seems to know the work, just not doing

    asked by Pam on August 26, 2008
  62. chemical engineering technology

    a gas cylinder contains N2 at 200 Kpa and 80°C as result of cooling the pressure drop to 190 Kpa and 30°C. how much work was done on the gas? can i please a solution for that equation.

    asked by Oliveira on April 4, 2016
  63. Math please explain how to do this

    Please explain how to work the formula for the following. Quarter Warehouse and Transportation Expense 1/2009 $12,500 2 11,300 3 11,600 4 13,700 1/2010 12,900 2 12,100 3 11,700 4 14,000 1/2011 13,300 2 12,300 3 12,100 4 14,600 The results of a simple

    asked by Patte on November 2, 2016
  64. science

    Describe one way in which work is done (Reminder: For work to be done, the force and the distance must be in the same direction.). guitar, keyboard Can you give me an example of how to describe how work is done in one of these example please?

    asked by Anonymous on November 18, 2009
  65. science

    Describe one way in which work is done (Reminder: For work to be done, the force and the distance must be in the same direction.). guitar, keyboard Can you give me an example of how to describe how work is done in one of these example please?

    asked by Anonymous on November 18, 2009
  66. ap chem

    A 9.00 M solution of a weak acid, HA, has a pH of 1.30 1.) calculate [A-] at equilibrium 2.) calculate [HA] at equilibrium Use pH to get (H^+). Ka = (H^+)(A^-)/(HA) (A^-) = (H^+). (HA) = 9 Plug and chug. Post your work if you get stuck.

    asked by Jaron on March 22, 2007
  67. Chemistry

    What is the pH of a 2.62 x 10^-1 HCN solution? The pKa for HCN = 9.212 I don't know whether to use the Henderson Hasselbalch Equation or just convert pKa to Ka and work it out that way.

    asked by Michael on May 25, 2010
  68. Math

    An equilateral triangle ABC has AB=20√3. P is a point placed in triangle ABC and D,E and F are the foot of the perpendiculars from P to AB, BC and AC, respectively. If PD=9 and PE=10, what is the value of the length of PF? Please work the complete

    asked by Watson on April 22, 2013
  69. Math

    An equilateral triangle ABC has AB=20√3. P is a point placed in triangle ABC and D,E and F are the foot of the perpendiculars from P to AB, BC and AC, respectively. If PD=9 and PE=10, what is the value of the length of PF? Please work the complete

    asked by Watson on April 23, 2013
  70. math

    Thank you for taking my question. Please show me how to problem solve the following: Bridgette has gotten a promotion. Her monthly salary will be $3500. Her bonus will be 1% of last year's profit, which were $500. In 6 months she will receive a 5% raise.

    asked by Ryan on January 15, 2009
  71. maths

    how can i solve this question- disney has 2 clocks.unfortunately both of them are faulty.1 of them loose 2 mintues every hour while the other gains during that time.he sets both of them correctly at midnight on 31 decemeber 2003 that is at the precise

    asked by suprita on June 29, 2011
  72. physics

    In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 3.1 m/s at an angle of 15.0° below the horizontal. It is released 0.82 m above the floor. What horizontal distance does the ball cover before

    asked by HELP on October 12, 2012
  73. chemistry

    Dr.Bob222: I attempted to solve the problem numerous times but keep ending up with the wrong answer. If you would be kind enough to show me the steps I would appreciate it. I'll pose the question once more: The volume of a gas at 24C and 0.21 atm is 36

    asked by Daddy on February 15, 2012
  74. physics

    When we studied the concept of work, we learned that work = force x distance. Now we learn that torque = force x distance. What's different about these two definitions?A) For work, distance and force are in the same direction; for torque they are

    asked by jim on March 1, 2012
  75. principles of physics

    When we studied the concept of work, we learned that work = force x distance. Now we learn that torque = force x distance. What's different about these two definitions?A) For work, distance and force are in the same direction; for torque they are

    asked by CHRIS on March 2, 2012
  76. Geometry

    The distance between two docks on opposite sides of a river is 90 meters. The angle formed by the river bank and the line between the docks is 53°. What is the width of the river? Round your answer to the nearest meter and show your work.

    asked by Maria on October 25, 2011
  77. Math - Trig

    This is the question: Two spruce trees are 100m apart. From the point on the ground halfway between the trees the angles of elevation are 21 degrees and 39 degrees. Determine the distance, to the nearest metre, between the tops of the two trees. Show your

    asked by lily on February 12, 2019
  78. Trigonometry:Angles of Elevation and Depression

    Due to a storm, a pilot flying at an altitude of 528 feet has to land early. If he has a horizontal distance of 2000 feet to land, at what angle of depression should he land? Please show your work. Thanks in advance.

    asked by A.J on May 1, 2011
  79. Science

    Acetylene gas c2h2 reaction cac2+2h2o. C2h2+Ca(oh)2 how many moles of cac2 needed to prepare 10.0 g c2h2 please show work and answer soon final question on big test review

    asked by Victor on February 17, 2014
  80. MATH

    FIND THE SOLUTION FOR THE EQUATION. ASSUME THAT ALL ANGLES IN WHICH AN UNKNOWN APPEARS ARE ACUTE ANGLES. COT ALPHA=TAN( ALPHA +40DEGREES) HOW DO I SOLVE THIS?

    asked by HAYDEN4747 on August 31, 2011
  81. Algebra

    How many solutions does this system have? x-2y=2 y=-2x+5 a. infinitely many solutions b. no solutions*** c. two solutions d. one solution

    asked by Kaai97 on February 11, 2016
  82. Math

    How many solutions does this system have? x-2y=2 y= -2x+5 a. infinitely many solutions b. no solutions c. two solutions d. one solution ******

    asked by Anonymous on January 8, 2018
  83. Chemistry - Mass-Mass conversion & Percent yield

    Please show work 1. N2 (g) + 3H2(g) ---> 2NH3(g) 100.0 g of nitrogen reacts completely with excess hydrogen, and 34.0 g of NH3 are obtained what is the percent yield of ammonia? 2. 2Al (s) + 3Cl2(g) ---> 2AlCl3(s) Assume that 0.40 g of Al is mixed with

    asked by Anonymous on February 21, 2013
  84. Physics

    Overall 80 % of the energy used by the body must be eliminated as excess thermal energy and needs to be dissipated. The mechanisms of elimination are radiation, evaporation of sweat (2430 kJ/kg), evaporation from the lungs (38 kJ/h), conduction, and

    asked by Vico on December 3, 2009
  85. business

    Dewey Dare is a production and operations manager with a clothing manufacturer. He has been looking into a system that will enable his company to take measurements from a customer and program machines to design and produce custom-cut clothes at little

    asked by fannie on June 18, 2019
  86. Calculus

    Consider the following. cos(x) + sqrt(y)= 1 (a) Find y' by implicit differentiation. y' = Correct: Your answer is correct. (b) Solve the equation explicitly for y and differentiate to get y' in terms of x. y' = ? (c) Check that your solutions to parts (a)

    asked by Anonymous on May 11, 2018
  87. science

    I am currently learning about skeletal system and I had trouble filling in some of the blanks. The ________________ consists of bones running along the medial part of the body. I said axial skeleton, but I am not sure. The ________ consists of bones

    asked by Anonymous on September 29, 2007
  88. Chemistry

    when 25.0 mL of a solution containing both Fe2+ and Fe3+ ions is titrated with 23.0 mL of 0.0200 M KMnO4 (in dilute sulfuric acid). As a result, all of the Fe2+ ions are oxidized to Fe3+ ions. Next, the solution is treated with Zn metal to convert all of

    asked by Albert on December 15, 2011
  89. computers

    hl=en&lr=&as_qdr=all&ei=pAQqTJXuBsP38AaSnPTRCA&q=how+does+an+information+system+work+what+are+its+people+organizational+and+technological+components+List+and+describe+the+people+organizational+and+technological+components&start=10

    asked by marty on June 29, 2010
  90. chemistry

    1) To prepare a 200 mL of aqueous stock solution X, you transferred 50 mL of a known concentration solution into a 200 mL volumetric flask. If you realize that the volumetric flask was contaminated with water droplets after you cleanly transferred the

    asked by Brad on January 12, 2009
  91. SCIENCE

    (aq) means the solution is dissolved in water used as a solvent. (l) means the COMPOUND (not element, usually) is a pure liquid. (g) means gas and (s) means solid. In the equation below, HCl(aq) + NaOH(aq) -->NaCl(aq) + H2O(l)This means that an aqueous

    asked by DrBob222 on December 11, 2006
  92. math,help

    is this correct solve and graph the solution set 3(x-4) > 7x-9 my steps 3x-12 > 7x-9 3x-7x > -9+12 -4x > 3 (-4x)/(-4) > (3)/(-4) x< -(3)/(4) how do i graph it also well, everything to the left of -.75 is x. so then am i correct or completely wrong...

    asked by jasort20 on March 18, 2007
  93. Math

    ( / means absolute value) Solve: 3+/2y-1/>=1. Graph the solution set on a number line. The number line I have is: -5 -4 -3 -2 -1 0 1 2 3 4 5 6 I'm confused on what to do.

    asked by Jon on February 25, 2008
  94. Math- Data Management

    How would you solve this problem. The mean of 10 numbers is 8. If an 11th number is now included, the mean becomes 9. What is the value of the 11th number? Make an algebraic solution.

    asked by Cathy on March 2, 2015
  95. Algebra 2

    I need help with this problem because I do not have a graphing calculator. Explain how you would solve this equation using your graphing calculator in five steps then give the solution. 2x- 3y=8 5x+ 4y= 11

    asked by Christian on October 23, 2007
  96. St Eugene university

    Solve x^2 times second derivative -3x times first derivative -5y =sin(logx) my solution is integrating both sides we have sinxlogx

    asked by Daniel on October 17, 2015
  97. Chem

    what volume of acetic acid must be added to 150.0 mL of water to generate a 15.0% acetic acid solution? I just need help on how to solve it please!:)

    asked by Not Smart Kid on January 10, 2013
  98. Maths

    120 liter lemonade solution require 11%sugar and 9%juice solve for sugar and juice requirements

    asked by Anonymous on August 22, 2016
  99. math

    a brick is placed on a balance scale.it balances exactly with a 3/4 pound weight and 3/4 of a brick .what is the weight of the brick? show and explain work

    asked by eric on November 11, 2013
  100. math

    A rectangle measures 30 feet by 20 feet and has a post at each corner. If posts are placed 2 feet apart. How many posts will there be in all? Explain and show work please.

    asked by wurm on November 15, 2011

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