Most popular questions and responses by EJ
  1. chemistry

    Enter the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate

    asked on October 11, 2010
  2. Science

    An energy pyramid illustrates that energy in the form of ________ is lost to the surroundings as it is passed from one organism to the next? (The real question provides a list of possible answers but it's wayy too long to type but on that list there's

    asked on October 25, 2018
  3. calculus

    a right triangle is formed in the first quadrant by the x- and y- axes and a line through the point (1,2). write the length of the hypotenuse as a function of x. find the vertices of the triangle such that its area is a minimum.

    asked on March 17, 2013
  4. physics

    How much heat must be removed from 456 g of water at 25.0°C to change it into ice at -10.0°C? The specific heat of ice is 2090 J/kg ∙ K, the latent heat of fusion of water is 33.5 × 104 J/kg, and the specific heat of water is 4186 J/kg ∙ K.

    asked on January 25, 2015
  5. Math

    In Beloy's fish ball factory, it costs 25 pesos to make 15 pieces of fishball while it costs 40 pesos to make 27 pieces. Assuming that the total cost is described by a linear function, how much does it cost to make 19 pieces of fishball?

    asked on October 10, 2017
  6. chemistry prt 2

    What is the net ionic equation of the reaction of MgCl2 with NaOH

    asked on October 11, 2010
  7. geometry

    Two sides of an equilateral triangle are 3x +15 and x + 21. Which of the following could be the measure of the third side?

    asked on April 26, 2012
  8. Chem

    In acidic solution MnO4- oxidizes H3AsO3, a weak acid, to H3AsO4, a weak acid, and is reduced to Mn2+. Write the balanced net ionic equation for this reaction. How many H+ are there in the balanced equation? Question 8 answers

    asked on February 22, 2011
  9. Math

    A 90 N boy is hanging on a rope that extends between two poles. Find the tension of the 2 ropes. The angles were 5 and 10 degrees

    asked on October 11, 2017
  10. math

    an insurance company reported that 55% of all automobile damage claims were made by people under age 25. If six automobile damage claims were selected at random, determine the probility that exactly four of them were made by someone under ager 25.

    asked on May 17, 2014
  11. chemistry prt 3

    What is the net ionic equation of the reaction of MgSO4 with NaOH

    asked on October 11, 2010
  12. Statistics

    in a medical examination, 300 people undergo a height measurement and was found out that the average height of all are 150cm. if the standard deviation is 19, find the number of people that fall under the given conditions: a)with the height less than

    asked on January 10, 2017
  13. geometry

    What is the perimeter of the isosceles triangle shown below? If necessary, round to the nearest hundredth.

    asked on March 4, 2011
  14. Economics

    An industry has only two firms producing outputs y1 and y2, respectively. The first firm has a cost function of TC(y1) = 20 + 20y1 and the second has a cost function TC(y2) = 10 + 5y2 + y22. The demand function for the product these firms make is Q = 120 -

    asked on November 22, 2014
  15. trigonometry

    a yardstick, held vertically on a level surface, cast a shadow 1 foot 8 inch long. Find the tangent of the angles that the rays of the sun make with the horizontal.

    asked on June 20, 2013
  16. physics

    A sports car accelerates from rest to 100 km/h in 6.25. What is the acceleration in m/s^2?

    asked on September 18, 2012
  17. Engineering

    I am doing a science engineering project, and I have to write a proposal. Which person should I write it in? Is first person ok?

    asked on March 27, 2019
  18. Pre - Algebra

    (4x^2-2x-1)-(-3x^3+2) I already know the answer is 3x^3+4x^2-2x-3 but I need someone to explain how to get to the solution. It would be greatly appreciated.

    asked on June 5, 2018
  19. physics

    a sprinter accelerates from rest to 10 m/s in 1.3s. What is her acceleration a) in m/s^2> b) km/n^2?

    asked on September 18, 2012
  20. ELA

    Pablo is writing a research paper about Roald Dahl, a famous children's book author. His teacher told him to include at least one primary source in his research. Which of the following is an example of a primary source? A. an interview with Roald Dahl by a

    asked on January 25, 2018
  21. Economics

    An industry has only two firms producing outputs y1 and y2, respectively. The first firm has a cost function of TC(y1) = 20 + 20y1 and the second has a cost function TC(y2) = 10 + 5y2 + y22. The demand function for the product these firms make is Q = 120 -

    asked on November 22, 2014
  22. chemistry

    If you used 0.155 mL of acetic anhydride, and 0.169 g of p-aminophenol what was the limiting reagent? Choice is either: 1. acetic anhydride or 2. p-aminophenol ________mol? How many moles of the non-limiting reageant remained after the reaction was

    asked on October 19, 2011
  23. chemistry

    If you used 0.155 mL of acetic anhydride, and 0.165 g of p-aminophenol what was your theoretical yield of acetaminophen? ___________g If you recovered 0.173 g of acetaminophen, what was your percent yield? ________%

    asked on October 19, 2011
  24. physics

    When the mover pushes the box, two equal forces result. Explain why the box moves even though the forces are equal and opposite

    asked on May 8, 2012
  25. science energy

    A stone held above the ground has potential energy. When the stone is dropped, potential energy is converted to _________ energy. A. kinetic B. thermal C. chemical D. electrical

    asked on January 31, 2018
  26. Math

    Kyla has 20 more 10-cent coins as he does 5-cent coins. He has half as many 1-peso coins than 10-cent coins. If he has a total of 38 pesos how many 5-cent coins does he have?

    asked on October 18, 2017
  27. calculus

    find the differentiate y=cscx/ãx

    asked on October 13, 2010
  28. physics

    If you travel 10 m [E], 25 m [S], 12 m [W] and 25 m [N], your displacement is

    asked on July 31, 2014
  29. Statistics

    The linear correlation coefficient, r, is a numerical measure of the strength of the relationship between two variables representing quantitative data.

    asked on May 17, 2011
  30. science

    Darren the astronaut traveled to Planet U-427, a planet that is as big as Earth but is half the mass of Earth. What can you say about Darren's weight in this planet?

    asked on June 17, 2015
  31. logic and design

    You have been contracted by a local antique store to design an algorithm determining the total purchases and sales tax. According to the store owner, the user will need to see the subtotal, the sales tax amount, and the total purchase amount. A customer is

    asked on January 15, 2012
  32. science

    Darren the astronaut traveled to Planet U-427, a planet that is as big as Earth but is half the mass of Earth. What can you say about Darren's weight in this planet?

    asked on June 17, 2015
  33. math

    what is 9y to the 18 power divided by15y to the2 power

    asked on August 28, 2012
  34. Applied Physics

    The velocity of an object is +47 meters per second at 3.0 seconds and is +65 meters per second at 12.0 seconds. The average acceleration of the object is 2.0 m/s to the fourth power

    asked on May 14, 2011
  35. Math

    A right triangle has legs measuring 35.4 and 47.2 inches. What is the measurement of its hypotenuse?

    asked on October 18, 2017
  36. Managerial Economics

    Since dry cleaning produces air pollution, a small town with two dry cleaning companies has decided to regulate the dry cleaning industry. The two dry cleaning companies, Company A and Company B, currently produce 350 units of air pollution, which the town

    asked on December 2, 2014
  37. algebra

    sue nees to find the length & width of a room. the room is 4 meters longer then it is wide. its perimeter is 24 meters. what is the width?

    asked on June 12, 2012
  38. Applied Physics

    A 10 kilogram object subjected to a 20 Newton force moves across a horizontal frictionless surface in the direction of the force. Before the force was applied, the speed of the object was 2.0 meters/second. When the force is removed the object is traveling

    asked on May 14, 2011
  39. math

    ratio in simplest form 400 centimeters to 1 meter 1 400:1 cm/m

    asked on October 30, 2006
  40. Analytic Geometry

    Find the coordinates of the foci, the ends of major and minor axis, the ends of latus rectum then sketch the graph of y^2/169 + x^2/144 =1 (i need the anwers to that i will have an idea on how to solve the remaining !@#$%^&.)

    asked on April 20, 2016
  41. organic chemistry

    is 2-pentene a cis or trans? and why? Cis- atleast 2 bulky grps.. Trans-3-4 bulky grps.. cis and trans must contain a double bond. i don't know if its a cis or trans so please enlighten me

    asked on July 28, 2015
  42. Managerial Economics

    Two competing hospitals in small city can choose whether to offer only basic health care, all- purpose care, or specialized care. The following payoff table denotes profits for each hospital: Hospital B's Services Hospital A's Services Basic All-Purpose

    asked on December 2, 2014
  43. Managerial Economics

    Problem 1 (50 points) The city of San Diego is considering extending the trolley (the downtown mass transit train) 11 miles from Old Town up to La Jolla. The cost of construction would be $1.7 billion. The estimated ridership along the new section is 18

    asked on December 2, 2014

    how many grams of glucose, C6H12O6 and water are in 600g of 5.5% by mass glucose solution? please indicate the general formula to use to solve this problem.

    asked on October 11, 2014
  45. Chemistry

    Consider the following hypothetical nuclear breakdown: Fermium-258 (Fm-258) loses three alpha particles and two neutrons. What is the new element that is formed (in terms of chemical symbol, atomic number and atomic mass)? I'm not sure how to express this

    asked on March 18, 2014


    asked on March 13, 2012
  47. chs

    If a pitcher threw a baseball straight up at 32 meters per second, what was the ball's velocity after 2.5 seconds?

    asked on November 12, 2011
  48. trig

    csc^2x secx/sec^2x+csc^2x

    asked on May 17, 2011
  49. Applied Physics

    A car is traveling at 20 meters per second. The driver steps on the brake. The car is in equilibrium

    asked on May 14, 2011
  50. Applied Physics

    An object is dropped from a height of 49 meters. The object takes 3.2s to hit the ground. The final velocity of the object when it hits the ground is -31 m/s

    asked on May 14, 2011
  51. Math

    1. In this problem, we analyze the profit found for sales of decorative tiles. A demand equation (sometimes called a demand curve) shows how much money people would pay for a product depending on how much of that product is available on the open market.

    asked on April 17, 2011
  52. Algebra

    Explain the process after Thx 2(2-2x)=-3x

    asked on February 3, 2018
  53. Math

    Mary scored 89 on her first test and 92 on her second test, 98 on the third, and 95 on the fourth. She has one more test to take. If she wants to have an average of 100 on all five sets, what score should she get on her removal test?

    asked on October 18, 2017
  54. math

    Wha is a vertex, a focus, an eccentricity, and a latus rectum

    asked on April 20, 2016
  55. Economics

    A city must decide whether to build a downtown parking garage and what rate to charge. It is considering two rates: a flat $1.50-per-hour rate or an all-day rate averaging $1 per hour (based on a $10 daily rate and an average 10-hour stay). Parking demand

    asked on November 22, 2014
  56. Quantitative Methods

    7) President’s job approval rating is frequently reported in news programs. You will hear statements such as: “Among likely voters, the President’s job approval rating is 46% with a margin of error of 6%.” a) What percent confidence interval do you

    asked on November 21, 2014
  57. chemistry

    Which of the isotopes of hydrogen is radioactive

    asked on March 6, 2014
  58. math

    How much interest would a person have to pay on a $3250 loan at 5% for three years??

    asked on January 30, 2013
  59. physics

    At highway speed, a particular car is capable of an acceleration of about 1.7m/s^2.At this rate how long does it take to accelerate from 90 km/h to 110 km/h? (in seconds)

    asked on September 18, 2012
  60. english

    in this sentence is on a verb (new sleds raced on the hill.)

    asked on October 27, 2009
  1. Chemistry

    WRONG. You don't even know how to compute for the number of moles of KMnO4 solution. It's not: (.02mol)/(.023L) It's: (.02mol)/(1L) X (.023L) The Molarity of KMnO4 is 0.02M, hence it's (0.02mol KMnO4/1Liter) then you multiply the given volume to get the

    posted on August 19, 2018
  2. Pre - Algebra

    Thank you!

    posted on June 5, 2018
  3. L.A

    Roasted toaster is actually correct lol

    posted on May 20, 2018
  4. History


    posted on March 29, 2018
  5. science energy

    i think kenetic

    posted on January 31, 2018
  6. math


    posted on December 3, 2017
  7. Math


    posted on October 13, 2017
  8. 5th grade


    posted on December 22, 2016
  9. Geometry


    posted on October 5, 2016
  10. math

    Its on the ellipse. Google isn't helping.

    posted on April 20, 2016
  11. College Algebra

    40 peanuts and 60 walnuts

    posted on September 15, 2015
  12. organic chemistry


    posted on July 28, 2015
  13. chemistry

    iight thanx

    posted on October 11, 2010
  14. SCI

    You know just because someone asks someone else for help doesn't mean that they are wanting to do their homework for them. Why don't ya'll check yourselves and learn some damn manners and learn to help others

    posted on May 18, 2008