1. physics

    A 0.5 Kg mass is supported by a SPRING . The system is set in vibration at its natural frequency of “ 4 Hz “ with an amplitude of “ 5 Cm “ . Find the spring constant .

    asked by sand on January 9, 2012
  2. Physics

    For the system of two crates and a pulley in the figure below, what fraction of the total kinetic energy resides in the pulley? (Assume m1 = 14 kg, m2 = 10 kg and mpulley = 5 kg.) (( o )) | | | | [m1] | [m2]

    asked by Sarah on April 1, 2014
  3. physics

    four particles each of mass 1kg at rest of four corners of a square as shown in the fig . find the coordinates of the mass of the system

    asked by sinta on October 12, 2012
  4. pre-calculcus

    Name all the values of x that are not in the domain of f(x)=2-x^2/x+5. Answer: x= -5 2)Find the minimum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities: x >/= 1, x

    asked by lucy on August 27, 2008
  5. Healthcare

    I need some suggestions on a proposal for a new health care system. I am having a hard time coming up with an idea to write a paper on. Any suggestions?

    asked by tonya on August 21, 2009
  6. science

    Which is not part of your immune system's response to a disease-causing organism? vaccination recognition disposal immunity vaccination right

    asked by Anonymous on January 30, 2016
  7. physics (mechanics)

    the potential energy of a system of two particle separated by a distance r is given by u(r) = A/r , where A is constant . find the radial force Fr that each particle exerts on the other

    asked by asnke on January 5, 2017
  8. math

    Q: Corbin is playing a board game that requires rolling two number cubes to move a game piece. He needs to roll a sum of six on his next term and then a sum of ten to land on to the next two bonus spaces. what is the probability that Corbin will roll a sum

    asked by dingbat on March 9, 2013
  9. English

    Could you please help me express sentence 1. We have to consider the fact that groups of 10 students will be working on biodiversity in each school of the three schools separately and at the end they will compare their results. 1) Task organization and

    asked by Henry2 on February 3, 2012
  10. math

    In the 400 meter dash runners stay in their lanes the entire distance around the track. If the runners would all start at the same line (the finish line) only the runner in lane 1 would be running 400 meters. Everyone else would be running a greater

    asked by Abbie on August 1, 2016
  11. English

    Are these right? IF not please help me understand them thank you. Identify the sentence that most strongly relies on emotional language. It took a lot of work, but we finally got the job done. With hard work and dedication, we got the job done.** We had to

    asked by Missy on May 13, 2015
  12. physics

    Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? W1 is zero, and W2 is positive W1 = - W2 W1 is positive, and W2

    asked by Cameron on January 11, 2017
  13. Biochem

    Assuming that the value of the equilibrium constant for the aldolase reaction Keq=6.43*10^-5 at pH=7 a.) What will be the equilibrium concentration of dihydroxyacetone phosphate (DHAP) if 1 mM of fructose-1,6-biphosphate is added to a buffered solution

    asked by Obert on January 30, 2008
  14. Chemistry

    In photography, unexposed silver bromide is removed from film by soaking the film in a solution of sodium thiosulfate, Na2S2O3. Silver ion forms a soluble complex with thiosulfate ion, S2O32-, that has the formula Ag(S2O3)23-, and formation of the complex

    asked by Anonymous on March 9, 2015
  15. Calculus

    Solve for x log(base6)(x+3)−log(base6)(x−5)=2. I tried to factor out the log(base6) and got (x+3)^x/(x-5)=2, but I don't know how to solve that...

    asked by Ann on May 18, 2014
  16. Simple Rate of Return

    (Ignore income taxes in this problem.) Dum Luk & Stoo Pid has invested in a machine that cost $70,000, that has a useful life of seven years, and that has no salvage value at the end of its useful life. The machine is being depreciated by the straight-line

    asked by Help!!! on December 13, 2006
  17. The Simplex Method

    A student earns $10 per hour for tutoring and $7 per hour as a teacher's aide. To have enough free time for studies, he can work no more than 20 hours per week. The tutoring center requires that each tutor spends at least three hours per week tutoring, but

    asked by Jammy on November 29, 2016
  18. painting

    Discuss a minimum of two reasons why Jackson Pollock's style of painting, as exemplified by Convergence, is considered an important, innovative development in the history of painting. To see this painting, locate it in the unit’s Resource List. Imagine

    asked by Anonymous on September 23, 2010
  19. science(chem)

    I have a question about compounds that oil out of solvents after drying. How would I analyze this? Could I make a KBr pellet, or would I just be able to analyze it in UV spec? I assume that the solvents used to dissolve the compound, would be used as a

    asked by ~christina~ on May 5, 2009
  20. Chemistry

    Hi! I'm in chem class and I don't know the answer to these questions I have several metal alloys and have to tell their general elements that make them up for example bronze - copper and tin What is the elements that make up Pewter? Also I was woundering

    asked by HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! on March 10, 2009
  21. Math (trigonometry)

    How do you get the second triangle when you have an ambiguous case of sine law? For example, if you are given the following information for a triangle: a = 7.2 mm, b = 9.3 mm,

    asked by Sammy on December 2, 2012
  22. Chemistry

    Hi, I'm trying to solve some chemistry problems, like the ones my teacher says will appear on our exams. The problem reads like this: What is the hydrogen conentration in a bleach sample that register 9.55 using a pH meter? My Attempt: Since this sample

    asked by Cliff on December 13, 2010
  23. English

    Which one is the correct sentence? If they both need grammar work do tell. a)This gives evidence that people will work hard, but will never receive a fair deal for their effort. OR b)This gives evidence that people will be working hard, but will never

    asked by Alice on March 14, 2011
  24. Dr.Bob

    A 100.0 mL sample of 0.05 M NH3 is titrated with 0.10 M HCl. Determine the pH of the solution after the addition of 50.0 mL HCl. Here is my work: NH3 + H3O+ --> NH4+ + H2O Before Addition: NH3= 0.005 mol H3O= 0 mol NH4+ = 0 mol Addition: NH3 = 0.005 mol

    asked by Nevaeh on April 16, 2016
  25. Trigonometic

    Solving Trigonometic Equations 1)sinx = (4/5) 2) cosx = (-12/13) Solving Trigonometic Equations 1)sinx = (4/5) 2) cosx = (-12/13) What is the question? Solve for x? x= arcsin (4/5) put that in your calculator. Same for the next. For both cases I recognize

    asked by abdo on April 23, 2007
  26. Physics PLEASE HELP!

    A spring with an unstrained length of 0.076 m and a spring constant of 2.6 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.09 10-3 kg and

    asked by Adriana on January 28, 2013
  27. Chemistry

    A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical

    asked by Saira on July 7, 2009
  28. chemistry

    Create balanced equation, given the two compounds in aqueous solution may react with one another. State whether or not a chemical reaction occurs. Make sure to include the state of each reactant and product. If a precipitation reaction occurs, provide the

    asked by Aaron on February 20, 2017
  29. chemistry

    The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium

    asked by bill on April 11, 2012
  30. Chemistry

    a change in pressure would have the greatest effect on the solubility of a A. solid in a liquid B. gas in a liquid C.liquid in a liquid D.liquid in a solid in an aqueous solution of potassium chloride, the solute is A. Cl B. KCl C. H20 D. K B for the

    asked by Kat on March 26, 2007
  31. Chemistry

    I'm solving for the mass of PEG for my 500ml solution, however I don't know what density should I use to convert 50g PEG/kg H2O? Should it be of the H2O or of PEG? Thank you very much! This is my solution: Concentration: 50g PEG/kg H2O Vol= 500 ml or 0.5L

    asked by KIM: Please Help! on November 18, 2015
  32. Check my precalc?

    #1: f(x) = x^2-4x find vrtex, axis ofsym, y-int, x-int if any, domain, range, where increasing and decreasing. I got.... vertex: 2,4 axis of sym: x=2 D= (-infinity, infnity) range= [4,infinity) im stuck of the intercepts because when i plug i 0 for x i get

    asked by Rebekah on September 25, 2012
  33. Precalc

    #1: f(x) = x^2-4x find vrtex, axis ofsym, y-int, x-int if any, domain, range, where increasing and decreasing. I got.... vertex: 2,4 axis of sym: x=2 D= (-infinity, infnity) range= [4,infinity) im stuck of the intercepts because when i plug i 0 for x i get

    asked by Rebekah on September 25, 2012
  34. Accounting 10

    Oscar Corp. applies manufacturing overhead to production at 150% of direct labor cost. During 20x5, manufacturing overhead of $180,000 was applied to production; actual manufacturing overhead was $199,000. Beginning Work in Process Inventory was $20,000

    asked by Vanessa on September 9, 2014
  35. Accounting 10 PLEASE HELP ME!

    Oscar Corp. applies manufacturing overhead to production at 150% of direct labor cost. During 20x5, manufacturing overhead of $180,000 was applied to production; actual manufacturing overhead was $199,000. Beginning Work in Process Inventory was $20,000

    asked by Vanessa on September 9, 2014
  36. Accounting 1

    Oscar Corp. applies manufacturing overhead to production at 150% of direct labor cost. During 20x5, manufacturing overhead of $180,000 was applied to production; actual manufacturing overhead was $199,000. Beginning Work in Process Inventory was $20,000

    asked by miguel on September 9, 2014
  37. Physics

    You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. You find that when a certain tool is pushed on a frictionless horizontal surface by a 12.2 N force, it moves 16.3 m in the first 2.30 s, starting from rest. You

    asked by Veronica on September 19, 2006
  38. Intro. to Computers

    Can you help with these 2 questions? 1. The law firm you work at regularly scans documents into the computer system. They now want to be able to edit the digital image copies of those documents. Which do they need to accomplish this? (A) Optical character

    asked by Natalie on June 13, 2007
  39. English Grammar

    You work hard. In this sentence, 'work' is the form of the present tense. We use the base form of a verb for the form of the present tense verb. ----------------------------------- Is my explanation above grammatical? Which one is right, base verb or basic

    asked by John on March 17, 2008
  40. GEOMETRY/PROP 2

    72% of employees bring their children to day-care centers before work. If there are 465 employees, how many do not bring their children to day-care before work ? 72:465 & x:465 is what I started with but I can not get the correct answer. need help.

    asked by Rose on October 15, 2008
  41. Physics

    A person with mass mp = 74 kg stands on a spinning platform disk with a radius of R = 2.31 m and mass md = 183 kg. The disk is initially spinning at ω = 1.8 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.77 m from the

    asked by MUHAMMAD JUNAID on April 21, 2019
  42. Help 5!!!

    5. Find the x and y intercepts of each linear equation. Be sure to write your answers as ordered pairs. y = 3x - 6 6y = -x + 2 On the second equation, change it to read y= ...,. Divide both sides of that equation by 6 to get the desired result. how?? The

    asked by Margie on October 13, 2006
  43. word problem

    A person invests $7,500 part at 5% and the remainder at 4% simple interest. If the total interest at the end of the first year was $346.50, find the amount invested at 4%. total interest=346.5=7500*.05 + x*.04 solve for x. ooopsss, I misread the problem.

    asked by Dan on July 17, 2005
  44. algebra

    this is the hardest problem people said it was the hardest andf they can not solve it can anyone solve this please it is hard In a basketball game, Garrett and Logan scored a total of 19 points. Logan and Ray scored a total of 14 points. Logan scored as

    asked by zachary stanich on February 15, 2012
  45. Algebra

    The formula to compute a person's body mass index is B=703*w/h2 B represents the body mass index, w is the person's weight in pounds and h represents the person's height in inches. I need to: a. solve the formula for w. b. What is the weight to the nearest

    asked by Tyler on October 14, 2009
  46. Grade 9 Algebra

    3. FOOTBALL The New Orleans Saints scored 7 fewer points than twice the points scored by the Pittsburgh Steelers. The two teams together scored a total of 32 points. Write and solve an equation to show how many points each team scored.

    asked by Jab on October 6, 2011
  47. AP CHEM!

    IM SO CONFUSED PLEASE HELP! H2 +CO2-->H2O + CO When H2 is mixed with CO2 at 2,000K, equilibrium is achieved according to the equation above. In one experiment, the following equilibrium concentrations were measured. [H2]= 0.20mol/L [CO2]= 0.30mol/L

    asked by linds on April 3, 2007
  48. Math - Ratio or Proportion (I think??)

    Hello, I'm looking for guidance on how to solve these two problems below. I think they are proportion or ratio problems, but I am not sure. 1. If 6 pounds of meat feeds 3 people for 5 days, how much meat is required to feed 5 people for 7 days? 2. If a

    asked by Gatorgirl on January 27, 2014
  49. Algebra

    98. Solve the equation -49 = x - 50 x=1? 94. Determine if the following equation is a function: x=2 No? 92. Determine if the following equation is a function: y=5 No? 89. Solve for x in the equation: 6/7x - 6 = -2 I got x=28/3 86. Does the following set of

    asked by y912f on May 1, 2010
  50. calculus

    Can you help me solve this problem? I really don't know what to do. I solve problems like for example the rate of change of the elevation but I just encountered this kind of problem so I really don't know what to do. Please help me The endpoints of a

    asked by y on September 15, 2014
  51. Gen chem II

    Calculate the work done when 50.0g of tin dissolves in excess acid at 1.00atm and 25 (degree in celsius) Sn(s)+2H(aq)----- Sn(aq) +H2(g) Assume ideal gas behavior The work done = (pressure)*(increase in volume) The increase in volume is due to the H2 gas

    asked by Farzan on March 5, 2007
  52. Physics

    A 0.79 kg ball is connected by means of two ideal strings to a vertical, rotating rod. The strings are tied to the rod and are taut. The upper string is 29.0 cm long and has a tension of 29.7 N, and it makes an angle θ2 = 64.0° with the rod, while the

    asked by Ryan on September 30, 2016
  53. Science

    Magnesium oxide is not very soluble in water, and is is difficult to titrate directly. It's purity can be determined by use of a back-titration method. 4.06 g of impure magnesium oxide was completely dissolved in an excess of 0.20 mol/L for neutralization.

    asked by Cleopatra on March 31, 2019
  54. algebra

    The coordinate plane below represents a town. Points A through F are farms in the town. graph of coordinate plane. Point A is at 2, negative 3. Point B is at negative 3, negative 4. Point C is at negative 4, 2. Point D is at 2, 4. Point E is at 3, 1. Point

    asked by Liz on January 28, 2018
  55. Modern History

    The US legal and political system have been greatly influenced by the the thinkers of the Enlightenment era. What are the impact of at least three Enlightment thinkers on modern times? If you have a specific question about the research you have to do,

    asked by Bryan on September 14, 2006
  56. Math, Pleas help.

    Please help me with the questions provided below; I have studied in Math, but I want to make sure my answers are accurate to ace. 1.) Solve the proportion. 5/8= y/40. A.) 25 B.) 13 C.) 11 D.) 10 I chose answer choice A for number one since 8x5=40, and

    asked by Anonymous on February 17, 2016
  57. statistics

    MBA604 Statistics Assignment 1 Part 1 1) (5 pts) An electronics company is about to launch a new product. If the serial number for each piece produced has the following format: LLNNN where L stands for any letter in the English alphabet and N is a number

    asked by austin on July 12, 2013
  58. statistics

    MBA604 Statistics Assignment 1 Part 1 1) (5 pts) An electronics company is about to launch a new product. If the serial number for each piece produced has the following format: LLNNN where L stands for any letter in the English alphabet and N is a number

    asked by austin on July 12, 2013
  59. message board threads

    As you may have noticed, an entire thread can now be viewed by accessing the original message. I think this is great for students, and this may enhance search engine rankings. If anyone has serious objections to this, please let me know. Thanks, Leo I

    asked by Leo on October 24, 2006
  60. another college math question

    Please teach me. I am completely blank with it. :( Let alpha = (3+sqrt(-3))/2 belongs to Q[sqrt(3)]. Show that if x is congruent to 1 mod alpha, then x^3 is congruent to 1 (mod alpha)^3. Similarly, show that if x is congruent to -1 mod alpha, then x^3 is

    asked by student on November 16, 2006
  61. physics

    A ball is thrown upward from the top of a 27.0-m-tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 31.2 m from the building. What must be the average speed of the person if he is to

    asked by micole on May 13, 2007
  62. Science / Geography

    Losing Your Bearings 1. Begin journey at 40 degrees N by 77 degrees W. 2. Travel 4200 miles with a compass bearing of 130 degrees. 3. Travel 2800 miles with a compass bearing of 180 degrees. 4. Travel 5250 miles with a compass bearing of 90 degrees. 5.

    asked by Suzanne on October 7, 2006
  63. Language Arts

    Thomas: Come on, Patrick you'll have fun. You'll learn alot, and you'll be helping a family have a home that they otherwise couldn't afford. Patrick: I don't know, Thomas. I've never built anything before, much less a house. Thomas: You don't have to build

    asked by Callie on February 26, 2015
  64. English-Writing

    Many students fear the thought of college. It is not only the transition from high school that intimidates them, but large classrooms, two hour seminars, and worse part, the fear of failure is what keeps them from going. Hence either take shorter hours,

    asked by HM on October 7, 2011
  65. History8 Check Answers?

    1) The major problem with the Articles of Confederation was that it _____. a.was too similar to the British system, giving one leader too much power b.it gave the states too much power c.it did not give the states enough power d.it did not establish a

    asked by imissbobby♥ on March 25, 2014
  66. Physics

    A 50g mass (M1) will be attached to the trolley M2) and will cause it to accelerate a distance of between .5 to .6m. You also catch the trolley immediately after it has passed through the photogate. The time for the trip will be noted and recorded. The

    asked by Tammy on February 23, 2007
  67. Computer Lit

    Does this look good? It's about Piracy and my position. Computer Piracy What is piracy? Are there pirates running around on the Internet? Piracy is theft, you’re stealing copyrighted work. You’re not stealing if you buy a book, a song on iTunes, or a

    asked by Kevin on June 4, 2015
  68. science

    Lab 1.1 Can somebody please, please help me with this lab?! I know it requires sketching and modeling which only i can do , but please, any help will be appreciated. I find these labs so hard to do, but my teacher said there's no alternative assignment and

    asked by JAY on October 23, 2011
  69. found of tech

    Lab 1.1 Can somebody please, please help me with this lab?! I know it requires sketching and modeling which only i can do , but please, any help will be appreciated. I find these labs so hard to do, but my teacher said there's no alternative assignment and

    asked by JAY on October 23, 2011
  70. science

    Lab 1.1 Can somebody please, please help me with this lab?! I know it requires sketching and modeling which only i can do , but please, any help will be appreciated. I find these labs so hard to do, but my teacher said there's no alternative assignment and

    asked by JAY on October 23, 2011
  71. Language arts: check my answers

    For questions 7–15, rewrite each sentence, adding commas where needed. (7) While I was researching skateboards I found an interesting old newspaper story. (8) In the June 29 1999 edition of the Mercury there was an article on skateboarding. (9) Some

    asked by anonymous on March 13, 2014
  72. Finance

    Life expectancy has risen to 78.3 years according to the Centers of Disease Control and Prevention. The average Roman’s lifespan 2,000 years ago was 22 years. In 1900, a person was expected to live 47.3 years. In 2013, assume you are a 42-year-old

    asked by Spork on November 20, 2015
  73. English

    1.Throughout his life, Chavez focused on nonviolent action. 2.He organized several boycotts of grapes and lettuce. 3.In California there was work for farmworkers if they could go from one farm to another. 4.In 1937, Cesar Chavez's family did not have

    asked by Chris on November 30, 2010
  74. Theather Appreciation

    HENRIK IBSEN 1. Which of these eras is Ibsen considered to be the Father of? a. Symbolism Era b. The Poetic Age c. Romanticism d. Modern Drama 2. Where is Henrik Ibsen from? a. Romania b. Finland c. Ireland d. Norway 3. According to his power point, which

    asked by Jehu on June 12, 2013
  75. Physics help please!

    The engine has an efficiency e1. The engine takes input heat Qh from a hot reservoir and delivers work W1. The heat rejected by this engine is used as input heat for a second engine, which has an efficiency e2 and delivers work W2. The overall efficiency

    asked by Mike on April 13, 2010
  76. Chemistry

    If the same solute is dissolved in two different solvents to the same concentration and the same temperature, the osmotic pressure ____ My answer & reason: solution A has a smaller molecular weight and therefore, a larger Molarity and higher osmotic

    asked by Anonymous on February 25, 2009
  77. Accounting

    Problems: Please show all calculations. Claudette, Inc., provides warranties for many of its products. The January 1, 2014, balance of the Estimated Warranty Liability account was $38,500. Based on an analysis of warranty claims during the past several

    asked by Jessica on April 1, 2014
  78. physics

    A large open loop made of metal is constructed below a high voltage (AC) power line. a) Can this loop be used to draw power from the lines? Where would the energy come from and how would it work? b) If no one actually saw the loop, would the power company

    asked by Sara on April 29, 2009
  79. reading

    words to use: curtail, devastate, digress,incentive, incorporate, indispensable,intermittent,rigor,squander and succumb.... Linda never had to work hard to make good grades in high school. But in college, where the rigors of course work were greater, she

    asked by Anonymous on June 7, 2014
  80. MATH

    i need help filling this out! 4x-10=32-3x 4x-10+____=32-3x+22 ____-10+____=32+_____ ___=___ ___=___ x=___ ok you need to solve for x. remember the rule, whatever you do on the left side, you do to the right side and vice versa. on the second step, they add

    asked by alejandra on October 24, 2006
  81. Chemistry

    When reviewing the procedure the student found that 4.912 x 10-1 M barium nitrate solution had been used instead of that in the following procedure: A student synthesized 6.895 g of barium iodate monohydrate, Ba(IO3)2*H2O by adding 30.00 mL of 5.912 x 10-1

    asked by Steve on June 30, 2014
  82. S.S

    1. Why did Thomas Paine write the pamphlet, Common Sense? a. to support conquering the Native Americans b to argue that more land should go to France and Spain c to show that loyalty to the monarchy was wrong d to pledge his loyalty to the british

    asked by Bark on September 21, 2016
  83. English

    In “Class in America-2003,” Gregory Mantsios argues that America favors the rich and a person’s race and class standing greatly influences their wealth, health and education. By comparing the myths and realities of the American dream of equal

    asked by Mick on February 11, 2008
  84. English-help me please

    Can you change the hard English words to easy ones and make the long sentences a little bit short for me? I have to memorize it and perform it, so I need this monologue to be easier. Monologue:Shakespeare's relationship with Robert Greene For seven years,

    asked by Tommy on February 16, 2014
  85. Macroeconomics

    The following is a report from a BLS survey tracker: “There were 65 people in the houses I visited. Ten of them were children under age 16, 25 people had full time jobs, and 5 had part time jobs. There were 10 retirees, 5 full time homemakers, 5 full

    asked by Morgan on January 21, 2019
  86. Business management class

    here is all my questions with answers.. just to double check my work.. Sue can u please check!! thanks u for all the help!! 1. In a _______, consumers ultimately decide what should be produced. A. macroeconomic system C. free market system B. socialist

    asked by April on January 30, 2012
  87. Physics

    A 72 kg skier leaves the end of a ski-jump ramp with a velocity of 24 m/s directed 25◦ above the horizontal. The skier returns to the ground at a point that is 14 m below the end of the ramp with a total speed of 22 m/s. (a) What is the rate at which the

    asked by Adam on October 17, 2015
  88. Calculus

    Let (a, b) be any point on the graph of Prove that the area of the triangle formed by the tangent through (a, b) and the coordinate axes is 2. This is the solution from the solution manual The coordinates of the point are (a,1/a). The slope of the tangent

    asked by Anonymous on February 11, 2018
  89. Chemistry

    For the chemical reaction, sodium hydroxide + copper (II) chloride = "robin's egg blue" precipitate, do the following: write the balanced molecular, balanced total ionic, and balanced net ionic equations; determine the Limiting Reactant (LR) for each

    asked by Anonymous on November 1, 2015
  90. Chemistry I

    Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction: In

    asked by Lindsey on November 1, 2011
  91. Chemistry

    Hi I just wanted to verify a few answers to chem questions I'm working on. Was wondering if anyone could help? 1. Calculate the molar concentration of 2.34g of lithium hydroxide, LiOH disolved in water to make 750ml of solution. My answer was CLiOH = 0.133

    asked by Andre on October 17, 2010
  92. physics133

    1 The principle of conservation of heat energy states that that when an object is at constant temperature or is in thermal equilibrium, it is losing and gaining heat at equal rates. the heat lost by a hot body is equal to the heat gained by the cold body

    asked by Cali franco on April 25, 2015
  93. World Geography

    Which of these statments describe NATO? 1. NATO's preferred method for resolving conflict is through military defense. 2. NATO's original purpose was to defend its members from Soviet aggression. 3. NATO's members include the U.S. and Canada. 4. NATO was

    asked by Courtney on March 25, 2011
  94. 1 question+chem!

    #11) The information: An unidentified acid with a concentration of 1.0 mol/L has been given to you to identify. The acid appears in your data booklet on the Relative Strengths of Acids and Bases table. The following test results were recorded: 1. Methyl

    asked by Dave on August 4, 2006
  95. Probability

    A man has 10 ties to choose from. He wears a tie each day to work. (5 days = 1 work week) What is the probability that he wears the same tie in a week? What is the probability that he wears a different tie each day?

    asked by Seany on July 30, 2015
  96. Probability

    A man has 10 ties to choose from. He wears a tie each day to work. (5 days = 1 work week) What is the probability that he wears the same tie in a week? What is the probability that he wears a different tie each day?

    asked by Seany on August 6, 2015
  97. Finance

    Cost Allocation It started with a letter Statendam, November 5, 2001 To: Henk Jacobs, director finance department From: Bob Jansen, manager refuse collection department Dear Henk, Someone told me that you had to see the teachers of one or your children

    asked by Math dummy on March 16, 2012
  98. Chemistry- urgent!

    When a solution of sodium oxalate (Na2C2O4) is added to a solution of lanthanum (III) chloride, lanthanum oxalate (molar mass 541.86 g/mol) The balanced net ionic equation for the reaction is: 3C2O4^2- (aq) + 2La^3+ (aq) --> La2(C2O4)3 (s) Thirty ml of

    asked by Gabby on December 15, 2011
  99. Physics

    A 2.0 lb block is given an initial speed of 4.0 ft/sec up an inclined plane starting from a point 2.0 feet from the bottom as measured along the plane. If the plane makes an angle (theta = 30 degrees) with the horizontal and the coefficient of friction is

    asked by Nora on March 12, 2015
  100. Statistics

    Let X1,...,Xn be a sample from the N(0, sigma^2). 1) Find the method of moment estimator of sigma^2 2) Find the MLE estimator of sigma^2

    asked by Nick on October 1, 2012

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