1. trigonometry pls help

    Vance is designing a garden in the shape of an isosceles triangle. The base of the garden is 36 feet long. The function y=18 tan theta models the height of the triangular garden. a. What is the height of the triangle when theta=45 degree? b. What is the

    asked by allexelle on April 25, 2015
  2. English

    1. He was sick so he couldn't go to work. 2. He was sick, so he couldn't go to work. 3. He was sick so that he couldn't go to work. (What is the difference among them? Does #1 mean #2 or #3? What is the meaning of #1?)

    asked by rfvv on April 19, 2010
  3. Electrolytic Cells

    Hey...can u check my two answers for a and b and can u help on the rest? 8. An electrolytic cell consisting of an aqueous solution of NaCl is set up. Answer the following. a. What is the strongest oxidizing agent present? My answer: Na; sodium b. What is

    asked by David on June 17, 2006
  4. chemistry

    What is the result we get when NaOH and Na2CO3 solution are added to alcohol respectively in difference test tubes? (2)Discuss the reactions of aldehydes with fehling's solution.Give the relevant equation. (3)How would ethanoic acid react with ammonia(NH3)

    asked by David on July 20, 2011
  5. chemistry

    What is the result we get when NaOH and Na2CO3 solution are added to alcohol respectively in difference test tubes? (2)Discuss the reactions of aldehydes with fehling's solution.Give the relevant equation. (3)How would ethanoic acid react with ammonia(NH3)

    asked by David on July 20, 2011
  6. statistik

    can you show me the caculation :) Last year, 50% of MNM, Inc. employees were female. It is believed that there has been a reduction in the percentage of females in the company. This year, in a random sample of 400 employees, 180 were female. a.Give the

    asked by mira on December 2, 2012
  7. Chemistry - please help

    Please help to determine the (%w/w) benzoyl peroxide (C14H20O4) in a sample. Procedure: 2.500g of sample was dissolved in 75ml dimethylformamide and diluted to 100.0ml with the same solvent. (Solution T). To 5.0ml of Solution T, 20ml of acetone and 3ml of

    asked by angela on August 3, 2010
  8. Algebra

    Two lamps can be connected to a battery in a circuit in series or in parallel. You can calculate the total resistance RT (t is down from r) in a circuit if you know the resistance in each lamp. Resistance is measured in ohms. For a circuit connected in

    asked by Anonymous on May 9, 2014
  9. General Chemistry

    "How would you prepare 150. mL of 0.1M sodium hydroxide given a stock solution of 3.0M NaOH?" I made calculations and figured the process would be to dilute 5 mL of the 3.0M NaOH to 150. mL. Is this correct? For the ideal 150. mL of 0.1M NaOH, I calculated

    asked by Emily on April 21, 2013
  10. Chemistry!

    Calculate the work involved if a reaction with an enthalpy change of -2418 kJ is carried out in a vessel with a mobile, frictionless piston. Other details: the reaction is H2(g) + 1/2Oxygen2(g) yields H2O(g) with enthalpy change of -241.8 kJ/mol. The

    asked by Elizabeth on November 23, 2008
  11. Math

    Same as before, except I forgot to write how would you have verify it and explain how to solve it. the length of a rectangle is (x-3) inches long, and the width 3 2/5 inches. If the area is 15 3/10 square inches, write and solve an equation to find the

    asked by Johnathen on March 8, 2016
  12. Anthropology 101

    I have and the I just want know if it is correct. 1. The American class system: (Points : 1) is a closed system. is an open system.X is mostly endogamous. is an illusion, because there are no classes. 2. A dowry is: (Points : 1) when, upon marriage, the

    asked by Kathy on July 14, 2012
  13. Science Help!!!!

    To solve the problem of a polluted stream a scientist traced where the pollution was coming from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of

    asked by callie on December 15, 2014
  14. algebra

    I need to know if I am doing this problem right when sustitution method. y+2x=3 y+2x=-4 y+2x=3 -1(y+2x=3)-y-2x=-4 now add the two equation y-2x=3 -y-2x-4 the answer would be -4y=7 then divided -4=7 answer 1.75 I no that there is more to this answer I am

    asked by Donna on February 15, 2011
  15. calculus

    Use Newton's method to approximate a root of the equation 3sin(x)=x as follows. Let x1=1 be the initial approximation. The second approximation x2 is and the third approximation x3 is

    asked by kwack on September 7, 2010
  16. algebra

    I need to know if I am doing this problem right when sustitution method. y+2x=3 y+2x=-4 y+2x=3 -1(y+2x=3)-y-2x=-4 now add the two equation y-2x=3 -y-2x-4 the answer would be -4y=7 then divided -4=7 answer 1.75 I no that there is more to this answer I am

    asked by Donna on February 15, 2011
  17. Math grd12

    How many ten-digit telephone numbers are possible if the first three digits must be different? The answer is 72,000,000,000.... I need the method to get that:)

    asked by Celina on November 21, 2010
  18. Math

    Use Newton's method to approximate a root of the equation 5sin(x)=x as follows. Let x1=2 be the initial approximation. The second approximation x2 is: and the third approximation x3 is:

    asked by Blair on July 19, 2008
  19. Math

    Check my answers please:) 1. Solve, round to nearest tenth if needed. 7r - 7 = 2r + 18 A. r = -5 B. r = 5 *** C. r = 2.2 D. r = 1.2 2. Solve, round to nearest tenth if needed. 2x + 12 = 18 - x A. x = 3 B. x = 10 C. x = 6 D. x = 2 *** 3. Solve, round to

    asked by cAt.ExE HaS sTopPeD wORkInG on November 29, 2018
  20. High School Chemistry

    10mL of 0.10M HCl is given. What is the pH? How many milliliters of 0.10M NaOH would be required to neutralize it? What is the pH of the neutralized solution? What would the pH of the solution be if you added 20mL of NaOH? Here's what I have so far: pH of

    asked by Becky on March 21, 2011
  21. estimating sums

    the flower shop received a shipment of 432 roses. they need to fill an order for 273 roses. use any method to estimate how many roses they will have left

    asked by shiv on October 11, 2011
  22. Java

    Write a method that will take in a String parameter and return true if the first 2 chars in the string also appear at the end of the string, such as with the word "edited", which starts and ends with 'e' and 'd'.

    asked by Aɴᴏɴʏᴍᴏᴜs on April 30, 2013
  23. math

    Calculate the amount of interest on a loan of $3,200 at 6% interest for 60 days using the ordinary interest method. A. $3.16 C. $32.00 B. $31.56 D. $384.00 3200x6% divided by 60=32.00 is this correct

    asked by Anonymous on May 14, 2009
  24. Math

    Use Newtons Method to find 13^(1/4) correct to four decimal places. I know the formula X_(n+1)= X_n - [f(X_n)]/[f'(X_n)]. I am not sure how to go on from there. I made the equation into y=X^(1/4), but I can't seem to figure out how to go on. Please help?

    asked by Betty on February 5, 2016
  25. math algebra

    Decide whether the equation has one solution, no solution or infinitely amount of solutions. 1: 2(x - 3) = 2x one none infinitely 2: 3(y - 3) = 2y - 9 +y one none infinitely 3: 10x - 2 - 6x = 3x - 2 + x one none infinitely 4(x + 3) + 2x= x - 8 one none

    asked by hngh on October 3, 2014
  26. Chemistry

    One of the concerns about the use of Freons is that they will migrate to the upper atmosphere, where chlorine atoms can be generated by the following reaction: CCl2F2 --> CF2Cl + Cl Chlorine atoms can act as a catalyst for the destruction of ozone. The

    asked by Jim on October 26, 2010
  27. Math! Pls Help!

    You exercised 24 hours each month for a year. How many hours did you exercise by the end of the year? 1. Show you Calculation using Distributive Property 2. Show you Calculation without using Distributive Property Pls Help!

    asked by Talia on November 5, 2015
  28. teachers

    Why don't most teachers at public schools let us think for ourselves? it's insulting. I am in English 3 and my teacher does all our work for us. What should we do? Here is my advice. Either bite your lip, and remain quiet, or discuss it privately with the

    asked by Bradley on September 6, 2006
  29. Art History

    I have to answer some questions about the artwork "Last supper" from the Rossano Gosepl but i need help cause i am really confused. 1) What message or meaning do you think this artwork conveys? 2) why is this artist an important one to know historically 3)

    asked by S.S on October 18, 2015
  30. jasmine20

    I just wanted to say I have seen you getting better in math as time goes on. You take the ideas presented to you and do a really good job of figuring out how to apply them. Noticed your hard work and thought I'd give you a kudos. I notice other hard

    asked by MattsRiceBowl on April 20, 2007
  31. HHS255

    Can some give me web sites because I can not find any, thanks As digital technology continues to influence Health Care and Human Service in the future, what does this mean for those who work and will work in these fields? What will workers in these fields

    asked by Danny on May 28, 2008
  32. science

    Calculate the work done in each of the following situations. (a) A horse pulls a wagon with a force of 1200 N and moves it 15 m. (b) A cable lifts an elevator 16 m by using a cable with a tension force of 2500 N. -How much work is required to lift a 35-kg

    asked by james on January 18, 2017
  33. Science

    A box that is initially at rest is pushed by a person at an angle 0 with a force F until it reaches a speed of v. The coefficient of kinetic friction between the box and the surface is U. Is this: work done by person equal to magnitude of friction F work

    asked by Anya on March 6, 2013
  34. Science

    You have a solution that contains Ag* ions and another that contains Na* ions. How would adding a solution that contains Cl- ions to these solutions enable you to tell which is which?

    asked by Sheryl on October 22, 2011
  35. algebra

    A 400 g solution is 25% salt. How much salt must be added to produce a solution that is 40% salt?

    asked by omar on December 2, 2010
  36. algerba..plz help

    A 400 g solution is 25% salt. How much salt must be added to produce a solution that is 40% salt?

    asked by abc on December 7, 2010
  37. MATH

    for what value(s) of k does the equation kx - 10 - 5x^2 have: a) one real solution b) two distinct real solutions c) no real solution

    asked by Eloise on March 21, 2015
  38. algebra

    A 400 g solution is 25% salt. How much salt must be added to produce a solution that is 40% salt?

    asked by omar on December 2, 2010
  39. Math

    do the equations y=2x+3 and x=1-2y have common solution, no common solution or infinitely many common solutions?

    asked by Brooke on March 4, 2014
  40. Algebra 1

    Can someone please check my answers? Thank You 1) Find an equivalent expression without parenthesis -(y+87) Answer: -y-87 3) Solve -3x-13x=96 answer: x= -6 4) Find the decimal notation 14/25 Answer: .56 5) Divide if possible 7/0 Answer:0 6) Solve 7x+10=52

    asked by deedee on November 5, 2008
  41. Chemistry

    In this experiment NaOH is standardized to titrate it with vinegar so thtat the percent by mass of the acetic acid can be determined. How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration? How

    asked by Sandy on March 29, 2014
  42. chemistry

    Magnesium reacts with HCl(aq) to form MgCl2 and H2(g) ____ Mg(s) + ____ HCl(aq) -----> ____ MgCl2(aq) + ____ H2(g) The following data was collected for the above reaction: Mg (g) 5% (m/v) HCl (ml) H2 gas produced (ml) 0.50 10 167 0.50 20 333 0.50 30 500

    asked by richard on January 29, 2010
  43. service management

    If another mechanic is hired, fill up the table below and answer the following questions (1pt): a. Which configuration has the lowest Ls? b. Which configuration has the lowest Ws? c. Which configuration has the lowest Wq? d. Which configuration has the

    asked by Dina on December 6, 2017
  44. physics

    1) A particle moves in the xy plane (see the from the origin to a point having coordinates x = 7m and y = 5m under the influence of a force given by F= 3yi^2 - 5xj. a) What is the work done on the particle by the force F if it moves along path 1? (ABD) J

    asked by ABCD on May 31, 2018
  45. Excelsior

    he following transactions occurred during March 2009 for the Wainwright Corporation. The company owns and operates a wholesale warehouse. 1. Issued 30,000 shares of common stock in exchange for $300,000 in cash. 2. Purchased equipment of a cost of $40,000.

    asked by meghan on January 28, 2014
  46. Math

    help me solve this conic: 12x^2+y^2+6x-9=0 not sure what you mean by "solve this conic" You want to know what kind of conic? ellipse to find out its properties you have to change it into standard form (x-h)^2/a^2 + (y-k)^2/b^2 = 1 I would first divide by

    asked by Blake on April 2, 2007
  47. Rates

    Guys, how much would you rate this website? From 1-10. Do you feel like others are helping you with your questions? Remember that we don't solve for you. We explain the situation you are in and then you solve it on your own. This website's caption is

    asked by Light Bulb on January 21, 2017
  48. Accounting 2

    Can someone help me with this problem. At least get me started so I can figure out how to do this. Your manager, Mr. Smith, has asked you to prepare a report, for a client, based on the following inquiry (see below). This report will be reviewed by Mr.

    asked by smeffy on April 22, 2010
  49. Physics (Please Help)

    Problem 4.4- Suppose n o and n e are given. In (a) you only need to find the magnitude of the group velocity. Problem #2 in HW 10 may be helpful. You can also directly use the definition of group velocity, i.e., v g = triangle k w (k), taking into account

    asked by Joy on November 13, 2013
  50. Partial Differential Equations

    Problem 4.4- Suppose n o and n e are given. In (a) you only need to find the magnitude of the group velocity. Problem #2 in HW 10 may be helpful. You can also directly use the definition of group velocity, i.e., v g = triangle k w (k), taking into account

    asked by Joy on November 12, 2013
  51. Grammar

    So now m posting the answers along witg the questions... Plz correct me if m wrong ! ^^ Tranformation of Sentences ? 1.He wont show me his papers,he wont tell me who he is (use neither -nor) Ans.He neither would show me his papers nor he would tell me who

    asked by Ri on February 28, 2016
  52. Chemistry-please help

    "Use a 10% w/v nitric acid solution." How to prepare 10% w/v nitric acid solution? Do I just weigh 10g of conc nitric acid (65%) and dilute to 100ml with water?

    asked by jessie on October 11, 2011
  53. Geometry

    42x25 rectangular roof(one side) We need to fill this roof with 8x4 plywood pieces. So, we need about 33 plywood pieces to fill one side roof. How do I show a possible arrangement of pieces on half of the roof. Make a few cuts. What is the area of the

    asked by Jen on January 15, 2007
  54. physics

    a collapsible plastic bag contains a gluccose solution. If the average gauge pressure in the atery is 1.33x10^4Pa, what must be the minimum height h, of the bag in order to infuse gluccose into the artery? Assume that the specific gravity of the solution

    asked by Anonymous on December 16, 2007
  55. Geometry

    I don't know if this is the place to put it but anyways Complete each of the following problems in the space provided if you need more space attach additional sheets. You must show all work and/or an explanation in order to receive credit. 1. Older

    asked by Bob on April 6, 2008
  56. Math

    Etienne owns a small recycling company that picks up empty glass bottles from restaurants. At the first restaurant, he picks up 50 bottles. At each restaurant after this, he picks up 4 more bottles than he picked up at the restaurant before. Assume that

    asked by Alex on September 17, 2014
  57. chemistry

    A proposed mechanism for a reaction is: (i) A + B2 AB2 Ea1 = 12 kJ/mol ƒ´H1 = 3 kJ/mol (ii) AB2 + C2 ABC + BC Ea2 = 30 kJ/mol ƒ´H2 = 5.2 kJ/mol (iii) ABC + B2 AB2 + BC Ea3 = 10 kJ/mol ƒ´H3 = -7.8 kJ/mol a) Which is the rate determining step? Explain

    asked by Sarah on September 20, 2014
  58. Physics

    Early one October you go to a pumpkin patch to select your Halloween pumpkin. You lift the 2.8 kg pumpkin to a height of 1.27 m, then carry it 51.4 m (on level ground) to the check-out stand. How much work do you do on the pumpkin as you carry it from the

    asked by Physics Nerd on March 13, 2010
  59. Stats

    The Geometric distribution is used when we want to find the probability of performing a sequence of trials with X “failures” before the first “success”, where a “success” occurs with some probability p. We can denote such a random variable as

    asked by Becca on September 30, 2013
  60. math

    Beer cans are right circular cylinders. My Mathematical Mead, My Polynomial Pilsner, and my Square-root Stout cans, from the Schmidt Brewery, have dimensional units called "brewskies." They have a volume (in cubic brew skies) equal to a solution of the

    asked by Anonymous on April 24, 2013
  61. Physics

    A ball on the end of a string travels in a horizontal circle at a constant speed. The circle has a circumference of 3 m, the ball has a speed of 2 m/s, and the centripetal force is 4 N. How much work is done on the ball each time it goes around? A) zero B)

    asked by Crystal on November 30, 2011
  62. Socials

    How did work camps and tariffs effect the Great Depression? What were the strength and weaknesses of these effects? workcamp- strength - men got to work weakness - ?? tariffs strength - protected Canada's profit weakness - slowed down trade

    asked by Sh on February 1, 2009
  63. Physics

    Hello, I have a question and I would like to know if anyone can help me. Well I was reading about the motion of an ideal "yo-yo" and I found that mechanical energy is conserved, but there´s something that I don´t understand and it´s about the work

    asked by Amy on February 10, 2017
  64. Chemistry

    Balance the follow equation using change in oxidation number method. (1) P4 + HNO3 = H3PO4 +NO2 + H2O (2) Na2Cr2O7 + FeCl2 + HCl = CrCl3 + NaCl + FeCl3 + H2O

    asked by Chemo on February 21, 2012
  65. Adult Development and life Assessment

    After hearing about some possible causes of sneezing, a scientist decides that room fresheners are the most common cause. What is the term that describes the scientist thinking 1. Hypothesis 2. Scientific method 3. Cognitive dissonance 4. Social influence

    asked by Regina on November 24, 2012
  66. PROBABILITY MATH

    An unprepared student makes random guesses for the ten true-false questions on a quiz. Find the probability that there is at least one correct answer. Could some one please help me? And explain to me how they got the answer? and is there another way

    asked by HM on November 9, 2011
  67. Math

    One method for correcting the bias in the standard error is to “pool” the two sample variances using a procedure that allows the bigger sample to carry more weight in determining the final value of the variance. True or false

    asked by Annie on December 15, 2017
  68. Calculus

    Write the integral in one variable to find the volume of the solid obtained by rotating the first-quadrant region bounded by y = 0.5x^2 and y = x about the line x = 7. I have to use the volume by disks method, but I'm confused about how to set it up and

    asked by Anonymous on May 11, 2018
  69. accounting

    which one would not likely employ the specific identification method for inventory costing? hardware store farm implement dealership music store specializing in organ sales antique shop

    asked by Anonymous on February 20, 2015
  70. Physics

    A football player runs the pattern given in the drawing by the three displacement vectors , , and . The magnitudes of these vectors are A = 6.00 m, B = 13.0 m, and C = 15.0 m. Using the component method, find the (a) magnitude and (b)direction of the

    asked by Kristi on July 9, 2011
  71. statistics

    If a researcher were studying the effects of a teaching method on patient learning outcomes, how does the research question need to be worded to use a t-test to test for statistical differences? What type of data needs to be collected and why?

    asked by Trisha on January 27, 2010
  72. Biology

    Hi! I'd love some clarification on this question Which of the following are NOT used to classify kingdoms of organisms? a. complexity of the organism b. invertebrate or vertebrate c. method of obtaining nutrition d. type of cell that makes up the organism

    asked by ~ on August 9, 2017
  73. physics

    A football player runs the pattern given in the drawing by the three displacement vectors , , and . The magnitudes of these vectors are A = 4.00 m, B = 15.0 m, and C = 18.0 m. Using the component method, find the (a) magnitude and (b)direction of the

    asked by jacob on August 14, 2015
  74. Java

    Can someone please help me out!!!I included what I have so far. *Purpose Implement a Java-method with three local int variables a, b, c, d and e that sorts these three values in ascending order by comparing and exchanging their values. At the end of the

    asked by Joyenna on March 7, 2011
  75. Physics - Power Law Data Analysis

    In an experiment, two variable quantities, x and y were measured. The relation between x and y is thought to be: y= 4(pi)b(x)^3 x(cm) +/- 0.02cm 0.67 0.80 0.90 0.95 y(g) +/- 0.25g 2.25 4.00 5.52 6.60 a) Draw a complete table that allows you to plot the

    asked by Shaila on September 20, 2010
  76. methods of researh

    you are conducting research on sex diffrences in e-mails.Your hypothesis is that men use more declarative statements and women use more questions. what are the advantags and disadvantages using the archival method in psychology and methods of research

    asked by diane on October 15, 2010
  77. Statistics

    If a researcher were studying the effects of a teaching method on patient learning outcomes, how would the research question need to be worded to use a t-test to test for statistical differences? What would the null and alternative hypotheses be?

    asked by Wanda on March 22, 2012
  78. PHYSICS

    1kg of fat is equal to 30MJ of energy.the efficiceny of converting fat to energy is 20%. suppose you life a mass of 12kg 2.0m vertically,500 times, how much work do you do? if all the energy used to do the work comes from the burning fat how much fat is

    asked by Riana on April 1, 2013
  79. Science(Magnets)

    Should be easy, this. The two south pole ends of two magnets are touching. Which of the following can be concluded? A. No work was required by an outside force. B. The magnets are naturally attracted to each other. C. Work was required by an outside force.

    asked by dddd47906 on September 20, 2014
  80. Physical Science

    5. What reactions occurs when a solution of hydrochloric acid, HCl, is mixed with a solution of calcium hydroxide, Ca(OH)2? (A) Cl + Ca(OH) --> HCa + Cl(OH)2 (B) HCl + Ca(OH)2 --> H(OH)2 + CaCl (C) 2HCl + Ca(OH)2 --> 2H2O + CaCl2 (D) 2HCl + Ca(OH)2 -->

    asked by CJ on October 16, 2013
  81. Gr10 math

    Solve using the quadratic formula. Express answers as exact roots and as approximate roots, to the nearest hundredth. b) k^2 - 9k = 1 c) 8w^2 = 2 - 3w Solve to the nearest hundredth. b) 1.2x^2 + 0.5x - 0.3 = 0

    asked by Rebecca on May 31, 2011
  82. math

    Write the steps to solve the following problem. Explain your steps as you solve it. A certain computer can perform 105 calculations per second. How many calculations can it perform in 10 seconds? PLEASE HELP ME!!!

    asked by MS. SUE I NEED YOU!!! on September 19, 2017
  83. maths

    A farmer has 120 metres of fencing. He is going to make a rectangular enclosure PQRS with the fencing. He is also going to divide the enclosure into two equal parts by fencing along MN. SNR The width of the enclosure is x metres. The length of the

    asked by bob on November 1, 2016
  84. MATH

    Jada is trying to determine the number of t-shirts that were in inventory before she started her shift. During her shift, she sold thirteen t-shirts, which left twenty-two t-shirts in inventory. -Define a variable. -Write an equation Jada can use to

    asked by cha on January 22, 2012
  85. English

    Read the following sentences from "Marriage is a Private Affair." ""I owe it to you, my son, as a duty to show what is right and what is wrong. Whoever put this idea into your head might as well have cut your throat. It is Satan's work." He waved his son

    asked by kale on January 11, 2019
  86. physical

    Problem 1 A goalkeeper kicks a ball of mass 400 g in the air, and reaches a position of height 15.9 m above the ground corresponding to a horizontal distance 19.7 m from its initial position. During its flight, the ball experiences a horizontal friction

    asked by sumi on December 8, 2011
  87. physical

    Problem 1 A goalkeeper kicks a ball of mass 400 g in the air, and reaches a position of height 15.9 m above the ground corresponding to a horizontal distance 19.7 m from its initial position. During its flight, the ball experiences a horizontal friction

    asked by sumi on December 8, 2011
  88. Organic Chemistry

    My original question was that I wished to dissolve 100mg of caffeine powder in oil but could not do it as caffeine was not soluble in oil. The answer was to dissolve soap in the oil first, then the caffeine. I've done some research and I propose to

    asked by Joy on September 4, 2013
  89. Calc I (@Reiny)

    y = x^3 - 8x^2 + 6x -2 has a slope of 6 at two points, what are the coordinates? I used Reiny's way to help solve this answer. Please check if I've done it correct: y'= 3x^2-16x+6 3x^2-16x+6=6 3x^2-16x=0 x(3x-16)=0 Solve for x's x=0 3x-16=0 ~> x=16/3 Plug

    asked by Angie on October 10, 2016
  90. algebra

    Solve for x x/6-x/8 equals 1 Do fraction busters Find the least common denominator, which is 24. Change the fractions to where they have the same denominator. Change 1 to equal 24/24, and solve. Did this help? x/6 + x/8 = 1 multiply each term by 24, the

    asked by Tony on April 24, 2007
  91. physics

    To solve you use y=VoT+aT2. You know that initial velocity is 0 so the fist term can be canceled and y=70. Than you just solve for T and divide 0.25 by T. a is acceration of gravity, 32.2 ft/(s^2) or (9.8 meters/second-squared). T = ?(2y/a) The T will be

    asked by Anonymous on January 5, 2011
  92. Calc I (@Reiny)

    y = x^3 - 8x^2 + 6x -2 has a slope of 6 at two points, what are the coordinates? I used Reiny's way to help solve this answer. Please check if I've done it correct: y'= 3x^2-16x+6 3x^2-16x+6=6 3x^2-16x=0 x(3x-16)=0 Solve for x's x=0 3x-16=0 ~> x=16/3 Plug

    asked by Angie on October 10, 2016
  93. chem

    A student mixes 5 mL of 2.00 x 10^-3 M Fe(NO3)3 with 5 mL 2.00 x 10 ^-3 M KSCN. They find that in the equilibrium mixture concentration of FeSCN^2+ is 1.40 x 10^-4 M. Find each of the following: the initial concentration in solution for Fe^3+ and SCN, the

    asked by Grant on October 14, 2015
  94. Chemistry

    One half-cell in a voltaic cell is constructed from a silver wire electrode in a .25 M solution of AgNO3 . The other half-cell consists of a zinc electrode in a .001 M solution of Zn(NO3)2. Calculate the cell potential I have no idea and am so stressed,

    asked by Anonymous on November 18, 2015
  95. Solutions

    When adding 100mL of water to a solution of 50grams of KI in 400mL of water, the total amount of KI in the new solution will be how many grams? Did I miss something here? The total amount of KI, if no extra is added and none taken away, MUST be 50 grams?

    asked by Kellie on February 25, 2007
  96. Chemistry

    In the following experiment, a coffee-cup calorimeter containing 100 \rm mL of \rm H_2O is used. The initial temperature of the calorimeter is 23.0 \rm ^{\circ}C. If 9.80 g of \rm CaCl_2 is added to the calorimeter, what will be the final temperature of

    asked by Ali on June 17, 2012
  97. Chemistry

    An impure sample of (COOH)2 · 2 H2O that has a mass of 2.9 g was dissolved in water and titrated with standard NaOH solution. The titration required 32.4 mL of 0.144 mo- lar NaOH solution. Calculate the percent (COOH)2 · 2 H2O in the sample.

    asked by Bella on April 1, 2016
  98. College Chemistry

    Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is yellow, and C is red. In the reactions in which they participate, they are reduced to A-, B-, and C- ions, all of which are colorless. When a solution of C is mixed with

    asked by Lisa on November 10, 2010
  99. Qualitative analysis ( Chemistry)

    A solution x forms a white precipitate with dilute sulfur in acid and also with aqueous silver nitrate. What could solution x contain? A) Barium Chloride B) Barium nitrate C) Magnesium chloride D) Magnesium chlorine Could someone tell me how to get the

    asked by Cheezel on November 17, 2016
  100. Chemistry/pH- Weak Acid

    Hi again! I have a new question, Can you help me? Consider 50.0 mL of a solution of a weak acid HA (Ka = 1.00.E-6), which has a pH of 4.000. What volume of water must be added to make the pH = 5.000? My Calculations: To calculate the concentration of x, I

    asked by Mary on August 17, 2008

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