# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 132
1. ## Algebra

Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the Rational Zero Theorem, list all possible rational zeros of the given polynomial. (b) Find all of the zeros of the given polynomial. Be sure to show work, explaining how you have

asked by Alg help on November 23, 2010
2. ## MATH help

Find the area of the following shape. You must show all work to receive credit. Figure ABCDEF is shown. A is located at negative 2, 6. B is located at negative 5, 2. C is located at negative 2, negative 3. D

asked by flaca on October 28, 2015
3. ## Math-Statistics

Find a confidence interval for ƒÊ assuming that each sample is from a normal population. a. P x = 14, ƒÐ = 4, n = 5, 90 percent confidence b. P x = 37, ƒÐ = 5, n = 15, 99 percent confidence c. P x = 121, ƒÐ = 15, n = 25, 95 percent confidence

asked by Richard on December 6, 2011
4. ## algebra

Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the Rational Zero Theorem, list all possible rational zeros of the given polynomial. (b) Find all of the zeros of the given polynomial. Be sure to show work, explaining how you have

asked by Math Loser :( on November 22, 2010
5. ## Chemistry

A pure sample of (R)-limonene has a specific rotation of +125.6. If a sample had a specific rotation of +35.6, how much of each enantiomer is present in the sample? Show your work. I don't even know where to begin....please help :(

asked by Adrianna on November 8, 2011

suppose a triangle has an area of 10ft^2. IF the base of the triangle is 1 foot longer than the height of the triangle, what are the lenghts of the base and height? please help and show work so i understand how to do it

asked by carol on October 18, 2016
7. ## college algebra

use the rational zeros theorem to find all the real zeros of the polynomial function,. use the zeros to factor f over the real numbers. f(x)=11x^3-x^2+11x-1 please show all work

asked by ladybug on November 19, 2012
8. ## Statistics/check answer

If a population has a standard deviation σ of 18.2 units, what is the standard error of the mean if samples of size 25 are selected? Show all work. standard error of the mean = 0/sqrt(n) = 18.2/sqrt(25) = 18.2/5 =3.64 Answer 3.64

asked by slomomo on March 1, 2015
9. ## Algebra 2

From a 52-card deck a card is drawn and then replaced. After the deck is shuffled, a second card is drawn. Find the probability of each event. a) both cards are clubs. PLEASE SHOW ALL WORK!

asked by Trisan on December 9, 2009
10. ## Chemistry

Which of the following solution has greater density? 1. 100ml of saturated aqueous solution of Lif. (Ksp(Lif)=1.84*10^-3). 2. 100ml of saturated aqueous solution of Hg2F2. (Ksp(Hg2F2)=3*10^-6). (We can assume that adding the dissolved doesn't change the

asked by qwerty on July 13, 2011
11. ## Chemistry

25.0 mL of a NaCl solution (concentration unknown) was found to react with 20 drops of the chloride test solution from the PU Chloride Test Kit. Calculate the mass of NaCl (in grams) in this solution. Calculate the mass of NaCl required to prepare 0.250 L

asked by kt on October 3, 2010
12. ## Childcare

which one of the following most typifies what teachers should ask themselves as part of the anti-bias approach? A am i preparing adequately to work with children under my care? B do i show a perference for children who most closely fit my own ethnic,

asked by Samoy on May 15, 2013
13. ## chemistry

A student investigating the properties of solutions containing carbonate ions prepared a solution containing 7.493 g Na2CO3 in a flask of volume 250 mL. Some of the solution was transferred to a buret. What volume of solution should be dispensed from the

asked by chemistrry help! on May 2, 2010
14. ## Chemistry

A solution is 0.10M in aqueous NH3. Calculate (a) the number of moles and (b) the number of grams of NH4Cl that must be added to 500mL of this solution to prepare a buffer solution with pH=9.15. You may neglect the volume change due to addition of solid

asked by Chen on February 17, 2016
15. ## math

Suppose that a market research company finds that at a price of p = \$30, they would sell x = 36 tiles each month. If they lower the price to p = \$15, then more people would purchase the tile, and they can expect to sell x = 41 tiles in a month’s time.

asked by jean on July 31, 2011
16. ## C#

5) Suppose you have declared an integer array named scores and you make the following method call: TotalScores(scores, num : 1); Of the following overloaded method definitions, which would execute? a. TotalScores(int[] scores) b. TotalScores(int[] scores,

asked by Adam on November 23, 2011
17. ## math

1.Find the value of this fraction computation: 6(1/2 + 2/3+3/4) Calculation With Distribution (Show all steps.) Calculation Without Distribution (Show all steps.) 2.Find the perimeter of a rectangular area with a length of 13 inches and a width of 7

asked by whitedress on November 3, 2017
18. ## improving writing

I have written two paragraph about the problem and solution plz tell me is it ok if any grammatical mistake or punctuation error is then plz tell me. the content of this paragraph meets the desired topic as per the exam requirements. plz, guide . below is

asked by yogita on June 18, 2015
19. ## Socials-Ms. Sue

What was the purpose of the continental system? Did it succeed or fail? Imagine that you are a senior advisor to Napoleon. You have been asked to prepare a memo outlining the advantages and disadvantages of disrupting Britain's trade with Europe. Your memo

asked by Sara on November 7, 2009
20. ## Trigonometry

Hi, I really need help in understanding how to solve trig equations. How do you solve this equation? Solve the equation on the interval 0 < or equal to x < or equal to 2pi. sinx = (square root of 3)/2 I appreciate your help. Thank you!

asked by Leah on March 17, 2013
21. ## Matrh

How do you solve this problem? The avera&e (aritmeticmean)of x and y is 5 and the avera&e of x, y, and z is 8. What is the value of z? (a)19 (b)14 (c)13 (d)11 (e)3 I solved it by addin 8+5=13 So I chose (c)13. But it's wron& and the answer is (b)14. How

asked by Mack on May 20, 2007
22. ## L.A.

Which of the following statements about "life without gravity" explains why it is a expoistory essay. 1. It is a short work of nonfiction that does not express the writers opinion 2. It is a short work of nonfiction that uses examples to make its points 3.

asked by Check please on November 11, 2016
23. ## physic

a resistor has a voltage of 6.65 V and a current of 4.45 A. it is placed in a calorimeter containing 200g of water at 24 degree Celsius. the calorimeter is aluminum (specific heat= 0.220 cal/g-Celsius), and its mass is 60g. the heat capacity of the

asked by julie on February 26, 2013
24. ## differential equation

Write the model ODE and the implied initial values, and then solve the IVP to answer each of the f ollowing: [2*8=16pts] (a) A 3kg mass is attached to a spring whose constant is 6 N/m, and the entire system is submerged in a liquid which imparts a damping

asked by lopez on March 10, 2015
25. ## chemistry

o 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 known

asked by Un on April 3, 2008
26. ## Algebra 2

Solve the equation by graphing. 5 = -√x-3 I don't know how to make the graph. What would the graph look like? I worked out the equation and this is what it came out to be: 5 ≠ -5, which is no solution. Is there a way to graph this? Sorry, confused...

asked by Fading on February 25, 2017
27. ## maths

i am trying to solve 4/x-2>5. i use calculator and mistakenly type of digit if other than 5. when i type in the problem ,so i get the wrong solution my answer was 2

asked by sunny on December 16, 2011
28. ## Help Please

Help to solve this 1/2 (3g-2) = g/6 nevermind I was missing a bracket in the solution. multiply both sides by 2 This gives 3g-2=g/3 now cross multiply to get 9g-6=g now add a -g to both sides and +6 to both sides. g=3/4

asked by Confused on October 24, 2006
29. ## Maths

Pls i urgently need solution to this problems(1) in angle xyz. Y=298cm,z=51.4cm,x=196cm.solve the angle completely. (2). Calculate the values of anglesA and C of MABC where b=14.36cm a=7.82cm B=115.6cm. (3). a,A,angleC in angleABC given that

asked by Malosky on June 7, 2011
30. ## physics- energy and work

To push a 33.0-kg crate up a frictionless incline angled at 27.0° to the horizontal, a worker exerts a force of 388 N parallel to the incline. The crate moves a distance of 4.10 m. What work is done on the crate by the worker? What work is done on the

asked by Hi on November 12, 2014
31. ## urgent urgent algebra / precalculas

For # 1, im getting stuck on this problem i don't understand this 1.4 = e ^ (0.03k) Now take the natural logarithm of both sides to solve for , ln 1.4 = ln e ^ (0.03k) ln 1.4 = 0.03k * ln e Recall that ln e = 1. ln 1.4 = 0.03 k Solve for k. Then try part

asked by zachary on March 22, 2013

its the second part of the question that I don't understand: according the graph shown, the net force acting on an object varies wth the object's displacement. Calculate the work down by the force on the object at the various displacements listed below (i

asked by Sarah N H on January 30, 2010
33. ## government

Advocates of a parliamentary system argue that congress is inefficient, moves slowly, and develops policies laced with compromises. What evidence exists to support this negative evaluation? Discuss the intentions of the founders, the electoral system,

asked by Anonymous on October 19, 2008
34. ## Finance

I need to identify the ROI and NPV of the wireless order-tracking system. Here is the information it gives me: - The aquisition cost is \$35,000 paid at the time of installation. - It reduces the wait staff by one person: Figure \$10 per hour, or 2020 hours

asked by Dan on February 5, 2010
35. ## Chem Titration and pH

Calculate the pH at 0mL, 5mL,...40mL for a 10.0mL aliquote of 0.100M Na3AsO4 (weak base) titrated with 0.100M HCl pKa1 = 2.25 pKa2 = 6.77 pKa3 = 11.60 Thank you First you should write equations to know where we are in the titration. At the beginning, we

asked by julie on October 7, 2006
36. ## Chemistry

Could you please give me a discriptive answer and explain what each term means? I have a hard time understanding chemistry. Thanx q1 In a reaction between aqueous solutions of calcium chloride and sodium carbonate, a precipitate is formed. The experimental

asked by Brittany Rusk on September 28, 2006
37. ## Algebra 2

Could you please show me step by step how to solve this problem? Suppose that the equation of an ellipse is 36X^2 + 81y^2 = 2916 Find the major and minor radii. Use these numbers and the realtionship in problem 11 to calculate c, the focal readius for this

asked by Algebra 2 on June 8, 2009
38. ## ALGEBRA 2

Could you please show me step by step how to solve this problem? Suppose that the equation of an ellipse is 36X^2 + 81y^2 = 2916 Find the major and minor radii. Use these numbers and the realtionship in problem 11 to calculate c, the focal readius for this

asked by EMERGENCY on June 9, 2009
39. ## PHYSICS HELP!!

A drop hammer of mass 120 kg falls 2.5 m onto a pile of mass 250 kg and drives it 70 mm into the ground. Calculate: a.The velocity with which the hammer strikes the pile (use the conservation of energy principle) b.The velocity immediately after the

asked by baz on May 12, 2015
40. ## PHYSICS HELP!!

A drop hammer of mass 120 kg falls 2.5 m onto a pile of mass 250 kg and drives it 70 mm into the ground. Calculate: a.The velocity with which the hammer strikes the pile (use the conservation of energy principle) b.The velocity immediately after the

asked by baz on May 11, 2015
41. ## math

okay so I have two questions that i'm completely stuck on ;-; 1.You want to buy three books that are on sale at 20% off. The original prices of the books are \$2.50, \$4.95, and \$6.00. How much will you save? Calculation With Distribution (Show all steps.)

asked by redful on November 3, 2017
42. ## IR chemistry - instrumental anaylsis

my last instrumental analysis lab was basically about becoming familiar with using an IR spectrometer. I used a salt solution with a sodium chloride salt plate although it was not stated in the procedure to do so. the IR spectra seems to have come out fine

asked by Instrumental on October 7, 2013
43. ## Chemistry

A solution contains 1.694 mg of CoSO4 (MW 155.0) per mL. Calculate a) The volume of 0.008640 M EDTA needed to titrate a 25.00 ml aliquot of this solution. moles CoSO4 = 0.001694mg/ 155 g/mol = 1*10^-6 mol Moles EDTA = 1*10^-6mol/0.025L = 0.000436 mol/L (in

asked by Sam on January 19, 2015
44. ## chemistry

Concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 hcl solution. My own three calculation 1.18g/ml x 1000ml x0.38 /

asked by Fai on September 20, 2012
45. ## Calculus

A pulley system on a pier is used to pull boats towards the pier for docking. Suppose that a boat is being docked and has a rope attaching the boat's bow on one end and feeding through the pier's pulley system on the other end. The pulley system is 1 meter

asked by Ryan on October 19, 2014
46. ## Math

Anna bakes 12 blueberry muffins, 20 bran muffins and 8 apple muffins. what % of muffins are blueberry. show all work

asked by Nerd1234 on January 10, 2016
47. ## Math

5. The temperature on the moon can vary from 243°F to −261°F. By how many degrees can the temperature vary on the moon? Show your work.

asked by Shawn on July 14, 2018
48. ## math

If jeff bought 2 basketballs and 3 baseballs for \$10 and herman bought 3 basketballs and 4 baseballs for \$15, how much is a basketball. Show all work.

asked by laur on June 12, 2013
49. ## Math

If m( angle 1) = 4x + 10 and m( angle 7) = 6x + 4, what are the measures of angles 1 and 7? I'm not sure how to show my work. Angle 1 and angle 7 are congruent alternate exterior angles

asked by Punkie on December 2, 2009
50. ## Math

The cafeteria has 4 cases of tuna and 9 single cans of tuna. In all,there are 65 can of tuna. How many cans of tuna are in a case? (P.S.-PLEASE SHOW WORK...I NEED HELP!Thank You!)

asked by Lauryn on March 28, 2014
51. ## math

Write the slope-intercept equation for the line with slope -2/3 and y-intercept (0, 3) and graph the line. Please show all of your work. (

asked by susan on August 3, 2011
52. ## algebra

Write a slope intercept equation for the line with the slope-1/4 and y-intercept (0,-2)and graph the line.Please show work.

asked by sherry on March 19, 2012
53. ## Algebra

Write the slope -intercept equation for the line with the slope-1/4 and y-intercept(0,-2) and graph the line.Show work.

asked by sherry on March 17, 2012
54. ## flordia

XYZ Manufacturing, Inc., located in Centervale, uses the calendar year and the cash method of accounting. On December 31, 2010, XYZ made the following cash payments: •\$100,000 for a two-year office lease beginning on February 1, 2011 •\$58,000 of

asked by mary on May 30, 2013
55. ## statistic****help*****

Show all your work. Indicate clearly the methods you use because you will be graded on the correctness of your methods as well as on the accuracy of your results and explanation. A simple random sample of adults living in a suburb of a large city was

asked by akiba on March 19, 2014
56. ## Math

The base of a solid S is the simicircular region enclosed by the graph of y = the sqrt of [4-x^2] and the x-axis. If the cross sections of S perpendicular to the x-axis are squares, the the volume of S is...? I've worked this out a few ways using what I

asked by James on May 7, 2007
57. ## Chemistry

Ok, I think I have this one but can you please check my work? A nationally known company markets a product called "cleaning vinegar" that is not designed for human consumption. What is the Mass Percent of acetic acid (HC2H3O2) in this product, if 25 drops

asked by Toni HELP! on March 5, 2007
58. ## math

Could someone please check my questions? My answers are under the questions... and any help will be greatly appreciated 33. Jane works at the public library after school. She makes \$7.00 per hour. She cannot work more than 15 hours per week. If y = 7x

asked by Abby on October 17, 2015
59. ## Math

Could someone please check my questions? My answers are under the questions... and any help will be greatly appreciated 33. Jane works at the public library after school. She makes \$7.00 per hour. She cannot work more than 15 hours per week. If y = 7x

asked by Abby on October 17, 2015
60. ## Math

A purse cost \$375.00. It was 25% off. What was the original price? I figured out the answer (\$500.00), but I did it the 'hard way'. Can someone show me a mathematical way or equation to do this in the future w/other percentages?? One way you can do this

asked by jules on August 7, 2007
61. ## Algebra

Please help me with this Algebra problem: The length of a rectangle is 91 less than six times the width of the rectangle. If the perimeter of the rectangle is 84 centimeters, what is the length of the rectangle? Write a system of equations for this

asked by Leroy on December 10, 2016
62. ## Algebra

17-Identify the vertex, axis of symmetry and x-intercept(s) of F(x)=(x+5)^2-6. I have no idea how the x intercepts are -5 +/- sq. root 6 and 0. can you show me how this came to be? I factored it so it would be x^2+10x+19, but there's no common factors in

asked by Erin on November 7, 2009
63. ## calculus

Let C be the curve which is the intersection of the half-cone S1 = {(x,y,z)|z=sqrt(x^2 + y^2} and the paraboloid S2 = {(x,y,z)|2z=3-x^2-y^2}. Find C. a)Make a 3-D sketch to show S1, S2, and C b) Show that at each point on C the normals to these two

asked by mark on October 5, 2008
64. ## chemistry

Processed cheese must be at a pH of 5.5 to 5.9 to prevent the growth of unwanted microorganisms. If sample of cheeese has an [OH^-]of 7.76*10^-9, what does it mean? Show calculation. I really need help with please. Kindly show me hoe to compute it thanks a

asked by Tricia on December 5, 2012
65. ## calc

Let C be the curve which is the intersection of the half-cone S1 = {(x,y,z)|z=sqrt(x^2 + y^2} and the paraboloid S2 = {(x,y,z)|2z=3-x^2-y^2}. Find C. a)Make a 3-D sketch to show S1, S2, and C b) Show that at each point on C the normals to these two

asked by mark on October 5, 2008
66. ## Chemistry

Please let me know how I am doing with the following three chemistry questions. 1.A sample of a gas in thermometer has a volume of 135mL at 11 degree celcius.Indicat what temperature(in k and degree celcius)would correspond to the foll.volume:

asked by Cliff on November 23, 2010
67. ## Math

Each morning, the baker gets up early to bake products for the shop to sell throughout the day. He likes to have 36 boxes of each item available in the shop. How much of each item will he need to bake? (Remember to use equations with a letter standing for

asked by Paul on November 12, 2015
68. ## Physics

Assume you have a rocket that requires a change in velocity of DeltaV=9.6km/s . There are two options for the propulsion system --- 1. chemical and 2. electric --- each with a different specific impulse. Using the setting of g0 =9.81m/s^2 to calculate the

asked by Janet on March 12, 2015
69. ## maths

Solve 1.-6b+1+4b= -3b+6 2.8x - 4x = -8 3.the sum of twice a number and 14 less than the number is the same as the difference between -38 and the number. what is the number? 4. some number is six more than eight. what is the number? 5. 3.2x + 5.6x = 3.1 +

asked by francis on October 11, 2006
70. ## Math/Science(Short Question 10th grade))

[History Homework] Please answer 1. What are 2 pieces of technology essential today? 2. If you could give a prehistoric person one item from today what would it be? 3. Why is writing important for civilizations? 4. Why is theater/drama important to

asked by Bone on September 15, 2011
71. ## Physics

A 12.0 g bullet is fired horizontally into a 108 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring of constant 144 N/m. The bullet becomes embedded in the block. If the bullet-block system compresses

asked by Loucy on December 10, 2010
72. ## physics

How would I find the acceleration of a car if it traveled 1.5 meters in one second? If it is accelerating at a constant rate with zero initial velocity, then use the formula X = (1/2) a t^2 and solve for the acceleration, a. X = 1.5 m, and t = 1 s. It

asked by anonymous on September 22, 2006
73. ## chemistry

15ml of 0.325M NaOH is delivered into 35ml HOBr solution of unknown concentration.The pH of the final solution is 7.48. Ka for HOBr is 2.0 x 10-9at 25C. Find the number of moles of OBr- and HOBr in the final solution.

asked by bridget on February 24, 2011
74. ## chemisty

What volume of HCl gas at 25â—¦ C and 1 atm should be bubbled into 375 mL of a 0.680 M aqueous solution of HClO4 so that the pH of the resulting solution is 0? Assume that all the HCl dissolves and that the volume of the solution does not change with

asked by Clayton on April 3, 2012
75. ## Chemistry

When 4.54 g of a nonelectrolyte solute is dissolved in 565 mL of water at 29 °C, the resulting solution exerts an osmotic pressure of 835 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the

asked by Jim on February 23, 2013
76. ## CHM general 2

Indicated whether the calculated molarity of NaOH would be lower or higher Than the real value; or unaffected? a) the water of the NaOH solution is not boiled and cooler before the solution is prepared b) The buret, wet with water, is not rinsed with NaOH

asked by Grettel on February 23, 2011
77. ## Chemistry

When 4.73 g of a nonelectrolyte solute is dissolved in 965 mL of water at 28 °C, the resulting solution exerts an osmotic pressure of 945 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the

asked by Josh on February 21, 2012
78. ## Chem Two

When 2.25 g of a nonelectrolyte solute is dissolved in 125 mL of water at 22 °C, the resulting solution exerts an osmotic pressure of 955 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the

asked by Jen on July 14, 2012
79. ## math

1.   Which graph might show the temperature during a 24-hour period?  (1 point) A B C D 2.   Which graph might show the amount of money in a bank account if money is never taken out?  (1 point) A B C D 3.   Which graph might show the amount of

asked by Danica on April 30, 2014
80. ## chem 2

Consider a chromium-silver voltaic cell that is constructed such that one half-cell consists of the chromium, Cr, electrode immersed in a Cr(NO3)3 solution, and the other half-cell consists of the silver, Ag, electrode immersed in a AgNO3 solution. The two

asked by Anonymous on May 29, 2014
81. ## physics

100g water, need to raise solution of sodiun acetate 20 degrees. how much energy does it require and how much sodium acetate will you need? Enthalpy of crystallisation is -260kJ. How do I work it out?q= Cp n ∆T? Do you use the density of SA any where? it

asked by Jannis on April 11, 2011
82. ## Math

1. Two lines, C and D, are represented by the following equations: Line C: y = x + 5 Line D: y = −2x − 1 Which of the following options shows the solution to the system of equations and explains why? (−2, 3), because the point does not lie on any

asked by Bobby Adams on April 6, 2017
83. ## Math

Point A lies at (2, 3) on a coordinate system. If the coordinate axes are rotated 45°, what is its position on the new coordinate system?

asked by Shawna on March 18, 2014
84. ## physics

A driver of a car traveling at 16.7 m/s applies the brakes, causing a uniform deceleration of 2.5 m/s2. The first question is - How long does it take the car to accelerate to a final speed of 13.9 m/s? For this i got 1.12 and that's correct. The second

asked by John on September 6, 2011
85. ## Physics

You pull on a rope that is attached to a box. The rope makes an angle of 25 degrees with the ground. You are pulling the box at a constant velocity. The force you are pulling with is 78N. The box weighs 25N. You pull the box a displacement of +16m. What is

asked by charlie on January 5, 2012
86. ## chemistry

a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution?

asked by kristen on June 21, 2012
87. ## chemistry

a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution?

asked by kristen on June 21, 2012
88. ## chemistry

a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution?

asked by kristen on June 21, 2012
89. ## chemistry

5.85g of sodium chloride is dissolved in 250mL of solution. Calculate: a)the molarity of the solution b)the mass percentage of the solute. can we use the given volume(i.e,250mL as total volume of the solution or volume of water in this problem?

asked by Asmera on November 3, 2013
90. ## Chemistry

You have a solution of 0.15M Ba(OH)2 and a solution of H2SO4 whose concentration you want to determine. You start with 25 ml H2SO4 in the Erlenmeyer and titrate in the Ba(OH)2. At the end of the titration, you find that you have used 20.4 ml Ba(OH)2 and an

asked by Mike Jones on April 2, 2014
91. ## calc

A car travels along a straight road for 30 seconds starting at time t = 0. Its acceleration in ft/sec2 is given by the linear graph below for the time interval [0, 30]. At t = 0, the velocity of the car is 0 and its position is 10. What is the velocity of

asked by Anonymous on August 23, 2015
92. ## math

Juanita is packing a box that is shaped like a rectangular prism.The box is 18 inches long and 9 inches tall.the total volume of the box is 1,944 cubic inches.use the formula V=lwh to find the width of the box.show work.PLEASE HElP!

asked by zion on April 22, 2014
93. ## Biochemstry

1. A buffer was prepared by dissolving 11.7 g of KH2PO4 in 400 mL of water, and with the addition of concentrated solution of KOH the pH was adjusted to 7.10. The volume was then adjusted to 500 mL. What are the [PO43-], [HPO42-], [H2PO41-], and [H3PO4]?

asked by James on February 24, 2014
94. ## chemistry

Suppose a piece of lead with a mass of 14.9g at a temperature of 92.5c is dropped into an insulated container of water. The mass of water is 165g and its temperature before adding the lead is 20.0c. What is the final temperature of the system? The sum of

asked by Jon on March 15, 2007
95. ## Career

1. Lee has not been showing up to work on time. Which work ethic is he lacking? initiative punctuality teamwork etiquette 2. Demonstrating the proper way to shake hands is an example of: workplace etiquette. work ethics. employee performance. teamwork. 3.

asked by YRN DJ on January 5, 2016
96. ## USA PoliScience

In forming Medicare, a. President Johnson allowed conservatives to propose a program, knowing it would ensure passage by Congress. > This is probably not correct because congress was never so easy. b. President Johnson resisted some Democratic urging to

asked by HM on October 5, 2011
97. ## Chemistry

If some NH4Cl is added to an aqeous solution of NH3: A. pH of solution will decrease B. PH will not change C. pH will increase D. NH4Cl cannot be added to NH3 E. The solution will not have pH I think the answer is B, because if NH4Cl is added to the

asked by Robby on March 7, 2013
98. ## chemistry

A 0.0875 M solution of aqueous ammonia was titrated with a solution of sulphuric acid. If 25.00 mL of the ammonia solution required 30.66 mL of the acid to reach the end-point, calculate the molarity of the acid. NH3(aq) + H2SO4(aq) ¨ (NH4)2SO4(aq)

asked by caleb on January 10, 2008
99. ## chemistry......plz help

A solution is prepared by dissolving 10.00g of a monobasic salt in a total volume of 1.00litres. Th pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the molecular

asked by tomi on March 24, 2009
100. ## chemistry

A solution is prepared by dissolving 10.00g of a monobasic salt in a total volume of 1.00litres. Th pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the molecular

asked by tomi on March 23, 2009