Popular questions and responses by taylor
  1. Chemistry

    When 100.g Mg3N2 reacts with 75.0 g H2O, 15.0 g of NH3 is formed. What is the % yield?

    asked on December 7, 2018
  2. Chemistry

    If the rate of formation of ammonia is 0.345 M/s, what is the rate of disappearance of N2? 1/2N2(g)+3/2H2(g)-->NH3(g) a. 0.173 M/s b. 0.345 M/s c. 0.690 M/s d. 245 M/s e. 0.518 M/s

    asked on July 30, 2012
  3. math

    i am a number between 60 and 100. my ones digit is two less than my tens digit. i am a prime number. what number am i? explain.

    asked on February 21, 2014
  4. Chemistry

    Calculate Delta H for 4NH3 + 5O2 --> 4NO + 6H2O using: N2 +O2 --> 2NO DH= -180.5 kJ N2 + 3H2 --> 2NH3 DH= -91.8 kJ 2H2 + O2 --> 2H2O DH= -483.6 kJ

    asked on June 30, 2010
  5. chemistry

    Mno4- + So3-2 = Mno2 + sO4-2 (in neutral solution,but H+ ions will appear in the final question) solve this redox reaction and give me the method also Thank you

    asked on January 10, 2016
  6. physics

    an olympic long jumper i capable of jumping 8.0 m. Assuming hi horizonal speed is 9.1 m/s as he leaves the ground, how long is he in the air and how high doe he go? Assume that he lands standing upright that is, the same way he left the ground.

    asked on January 5, 2012
  7. Story problem

    The difference of two complementary angles is 18. What is the measure if the two angles

    asked on February 17, 2014
  8. physics

    A 70-kg fisherman in a 138-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.8 m/s as in the figure below. Neglecting water resistance, and assuming the boat is at rest before the package is thrown, find the

    asked on March 27, 2012
  9. Art check please

    1. Rust on an artifact is an example of (1 point) chemical decomposition ******* chemical preservation physical decomposition physical preservation 2. What “preservation controversy” developed over the years relating to Michelangelo’s paintings in

    asked on January 23, 2015

    he magnetic coils of a tokamak fusion reactor are in the shape of a toroid having an inner radius of 0.700 m and an outer radius of 1.30 m. The toroid has 800 turns of large-diameter wire, each of which carries a current of 12.0 kA. (a) Find the magnitude

    asked on November 5, 2013
  11. Univ-Phys

    One car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 5.0m/s, they then have the same kinetic energy. What were the original speeds of the two cars?

    asked on October 7, 2009
  12. Chemistry

    Given the following data, determine the rate constant of the reaction 2NO(g) + Cl2(g) 2NOCl(g) Experiment [NO] (M) [Cl2] (M) Rate (M/s) 1 0.0300 0.0100 3.4 x 10–4 2 0.0150 0.0100 8.5 x 10–5 3 0.0150 0.0400 3.4 x 10–4 a. 1.13 M –2s–1 b. 9.44 M

    asked on July 30, 2012
  13. math

    Find the maturity value of the undiscounted promissory note that states that Phillip Esterey borrowed $4,000 for a period of 7 months with ordinary interest at 7%. The date of the note was December 17, 2008. The maturity date was July 17.

    asked on October 13, 2013
  14. science

    Which of the following is NOT a function of proteins? a: act as a main fuel for cells B: control chemical reactions in a cell

    asked on October 22, 2013
  15. Math

    A farmer needs to enclose three sides of a pasture with a fence (the fourth side is a river). The farmer has 42 meters of fence and wants the pasture to have an area of 220 sq-meters. What should the dimensions of the pasture be? (For the purpose of this

    asked on February 29, 2012
  16. Geometry

    Does anyone have the answers for connections academy geometry b unit 7 lesson 7 circles unit test?

    asked on December 18, 2019
  17. science(CHECK ANSWERS)

    which of the following is the best example of transforming electromagnetic energy into thermal energy? A.when trees absorb sunlight for photosynthesis. B.when the interior of a car absorbs sunlight and warms up. C.when a solar panel absorbs sunlight to

    asked on February 5, 2014
  18. 3rd grade

    What is the Plural Possessive of elephant trunk ?

    asked on November 13, 2008
  19. Algebra 2

    A path of uniform width surrounds a rectangular garden that is 5m wide and 12m long. The area of the path is 168m^2. Find the width of the path.

    asked on November 4, 2014
  20. Chemistry

    Given the reactant side of the total ionic equation for the neutralization reaction of ammonium hydroxide (NH4OH) with hydrochloric acid (HCl), write the total ionic equation (also known as the complete ionic equation) by entering both the reactant and the

    asked on January 27, 2014
  21. physics

    an astronaut on the planet zircon tosses a rock horizonally with a speed of 6.95 m/s. the rock falls through a vertical distance of 1.40 m and lands a horizontal distance of 8.75 m from the astronuat. what is the acceleration of gravity on zircon?

    asked on December 13, 2011
  22. Consumer Math

    On your last credit card statement, you had a previous balance of $567.18, payments of $120, a periodic rate of 1.56 percent, and new charges totaling $45.17. What is your new balance?

    asked on March 26, 2013
  23. math help please

    the amount of revenue brought in by states from motor vehicle licenses increased at a relatively constant rate of 499.79 million dollars per year from 1990 to 2000. In 2000, the states brought in 15,099 million dollars in revenue from motor vehicle

    asked on November 18, 2013
  24. physics

    starting from reast a boat increases its speed to 4.12 m/s with constant acceleration. (a) what is the boat's average speed? (b) If it take the boat 4.77s to reach this speed, how for has it traveled?

    asked on November 17, 2011
  25. math

    What do they call bowling in hawaii

    asked on October 29, 2010
  26. Algebra logs please help


    asked on January 11, 2016
  27. Chemistry

    Indicate which of the following has the highest entropy at 298 K. 0.5 g of HCN 1 mol of HCN 2 kg of HCN 2 mol of HCN All of the above have the same entropy at 298 K.

    asked on July 30, 2012
  28. math

    Please show the ratio answer as #:#. The length of a pool is twice its width. What is the ratio of the length to the width of the pool?

    asked on July 5, 2012
  29. math

    mr. and mrs. blank sold their house for $200000 and needed to hire an attorney to handle the closing procedures. attorney mr. gable charges a flat rate of $2500. attorney ms. mandel charges 1 1/2% of the cost of the house. which attorney would be cheaper

    asked on October 2, 2012
  30. Math

    two trains are traveling toward each other adjacent tracks. one of the trains 230 feet long and is moving at a speed of 60 miles per hour. The other train is 220 feet long and is traveling at the rate of 70 miles per hour. Find the time interval between

    asked on September 14, 2012
  31. College Physics

    A 40 kg child is standing on the edge of a merry-go-round in a playground. Before they were deemed too dangerous, these were quite common. They were just huge rotating platforms you could sit on while someone spun you around in uniform circular motion

    asked on April 8, 2012
  32. CHEM HELP!!!

    I don't get two questions out of my homework and I know the answers to them but just not how the answers were gotten. PLEASE HELP!! 1) A handbook gives the aqueous solubility of carbon monoxide at 0 C and 1 atm CO pressure to be 0.0354 mg CO per mL of

    asked on February 13, 2012

    An organic compound, X, will react with an excess of calcium metal to produce a salt with the empirical formula CaC4H6O4. What could be the identity of X? 1 ethanoic acid 2 butanedioic acid 3 methylpropanedioic acid With explanation please!

    asked on October 22, 2014
  34. English- Ordinary People by Judith Guest

    In the book Ordinary People by Judith Guest, what are her biases? How can one determine an authors bias if it is a fiction book?

    asked on August 29, 2014
  35. math

    Use a table of trigonometric values to find the angle è in the right triangle in the following problem. Round to the nearest degree, if necessary. cos è = 0.8192 A = 45 H =?

    asked on July 18, 2012
  36. Physics and Chemistry

    What chemical phenomenon accounts for the elasticity seen in solids? covalent bond hydrogen bond ionic bond all of the above.

    asked on June 6, 2009
  37. Chemistry

    In a methane molecule (CH4) there are 4 single covalent bonds. In an octane molecule (C8H18) there are 25 single covalent bonds. How does the number of bonds affect the dispersion forces in samples of methane and octane? Which compound is a gas at room

    asked on March 17, 2009
  38. science

    why is planning experiments important to the scientific study

    asked on September 10, 2008
  39. history

    Question 2 (04.05 MC) Using the map and your knowledge of U.S. history, what do the details of the Rocky Mountains suggest about the Lewis and Clark expedition? The group made a grave mistake in not turning back in Missouri. The group really could have

    asked on January 12, 2015

    the railway by edouard manet One of the characteristics of impressionism, which is pictured here, is? formal portraits dark color theme lack of attention to light usage capturing the human experience (I thought this one) Not sure though

    asked on December 10, 2014
  41. Sociology (Stats) Std. Dev

    Given (μ) = 500, and σ = 100. What percentage of the SAT scores falls: A) Between 500 and 600? The percentage falls 1 σ above the (μ), 68.26% / 2 = 34.13% B) Between 400 and 600? The percentage falls 1 σ below and 1 σ above the (μ) C) Between 500

    asked on October 8, 2014
  42. math

    what percent of 67 is 33? round to the nearest tenth of a percent. the answer is 49.3% but i don't know how he got that can you explain

    asked on June 17, 2012
  43. phyics (PLEASE PLEASE READ)

    a bicyclist is finishing his repair of a flat tire when a friend rides by at 3.5 m/s. two seconds later, the bicyclist hops on his bike and accelerates at 2.4 m/s^2 until he catches his friend? (a) how much time does it take until he catches his friend?

    asked on November 20, 2011
  44. Science

    I need a climatogram for these biomes and I can't find any! HELP! alpine temperate forest taiga ocean

    asked on April 13, 2008
  45. Chem

    How many moles of silver are contained in 1.00kg of silver 1.00 kg(1000g/1 kg)(1 mol/ 108 g Ag) = Answer 9.26 would this be correct or would it have like a 10 ^ ____ ????

    asked on October 24, 2007
  46. Algebra 2

    Write the solution to the given inequality in interval notation. [-3,-1) (-3,-1] (-∞,-3) U [-1,∞) (-∞,-3] U (-1,∞)

    asked on January 19, 2020
  47. Algebra 2

    The graph of an absolute value function opens up and has a vertex of (0, -3). The domain of the function is . The range of the function is

    asked on January 18, 2020
  48. social studies HELP

    Check my answers please 1. Politics most informs a persons actions in a. Civic life *** b. work life c. private life d. school life 2. Which of the following best describes the purpose of the US Constitution? a. it restricts the rights of citizens b. it

    asked on September 12, 2014
  49. Math problem

    The modern grocery has cashews that sell for $4.00 a pound and peanuts that sell for 2.50 a pound. How much of each must Albert the grocer mixed to get 60 pounds of mixture that he can sell for three dollars per pound? Express the problem as a system of

    asked on February 17, 2014
  50. physical science

    Calculate (to the nearest 0.1 u) the formula mass of these compounds. (a) rubidium nitrate, RbNO3 u (b) aluminum peroxide, Al2(O2)3 u (c) water, H2O u

    asked on October 9, 2010
  51. math

    two joggers start at the same time from opposite ends of a 10-km course. One jogger is running at 6 km/h and the other is running at 10 km/h. How long after they begin will they meet?

    asked on September 19, 2009
  52. algebra

    x(4-k)=p solve for k

    asked on November 18, 2008
  53. algebra

    Which of the quadratic functions has the narrowest graph? a. y=-x^2 b. y=1/3x^2 c. y=3x^2 d. y=1/5x^2

    asked on May 2, 2020
  54. Algebra 2

    Given the functions, f(x) = x2 + 2 and g(x) = 4x - 1, perform the indicated operation. When applicable, state the domain restriction. g(f(x)) 4 x2 + 1 16 x2 + 3 4 x2 + 7 16 x2 - 8 x + 3 Please help. I thinks that it is 16 x2 + 3. Thanks

    asked on January 21, 2020
  55. math

    the equation y = 2x represents a linear or non linear function.

    asked on October 23, 2019
  56. history

    why did reformers want to pass the seventeenth amendment.

    asked on April 23, 2019
  57. math

    Which fraction can be replaced with 1/2 when estimating with fractions A. 10/12 B. 7/16 C. 2/9 D. 1/8

    asked on February 11, 2019
  58. chemistry

    the important industrial process for producing ammonia (the Haber Process), the overall reaction is: N2(g) + 3H2(g) → 2NH3(g) + 100.4 kJ A yield of NH3 of approximately 98% can be obtained at 200°C and 1,000 atmospheres of pressure. How many grams of N2

    asked on July 24, 2017

    1. A curator decides to display an eighteenth-century painting in a windowless room with controlled temperature and humidity. Pick the answer that best describes the reasons for her choice: (1 point) 1)The curator wants to make sure that the temperature

    asked on January 22, 2015
  60. Physics

    Alexis Farias realizes her dream to play golf on the moon. She hits a golf ball with an initial velocity of 23.5m/s at an angle of 35.0 degrees above the horizontal. The acceleration due to gravity on the moon is 1.67m/s^2. A). How long is the golf ball in

    asked on October 31, 2014
  61. Math

    Elimination X+2y=5 -3x+6y=15

    asked on February 17, 2014
  62. math

    write a trinomial of degree 4 such that the GCF of its terms is 1

    asked on February 13, 2013
  63. Chem- REALLY URGENT!!!

    2. Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation: CH4 + NH3 + O2  HCN + H2O You have 8 g of methane and 10 g of ammonia in excess oxygen. Answer the following questions: •

    asked on December 19, 2012
  64. General Chemistry 1 college class

    The tomato is dropped. What is the velocity, , of the tomato when it hits the ground? Assume 82.7 of the work done in Part A is transferred to kinetic energy, , by the time the tomato hits the ground. Express your answer numerically in meters per second

    asked on October 30, 2012
  65. math

    explain which is more accurate: measuring to the nearest millimeter or to the nearest eighth of an inch

    asked on October 21, 2012
  66. probability

    A box of 6 coins (penny, nickel, dime or quarter) worth $0.67 is shaken. What is the probability that a nickel is drawn first and then a quarter? Assume no replacement and that all coins are equally likely.

    asked on September 28, 2010
  67. algebra 1

    i need the rate of change for: growing from 1.4 to 1.6m in one year

    asked on March 26, 2008
  68. Mathematics

    Aldo can choose Plan A or Plan B for his long distance charges. For each plan, cost (in dollars) depends on minutes used (per month) as shown below. (I'll try to see if I can post the graph.) 1. If Aldo makes 60 minutes of long distance calls for the

    asked on July 2, 2020
  69. Accounting

    Accounts receivable will appear on which of the following financial statements? Statement of changes in stockholders’ equity Statement of cash flows Balance sheet Income statement

    asked on January 3, 2019
  70. American government

    1.) Which of the following is true about the formal amendment process for the Constitution? A.) Any citizen may propose an amendment. B.) only Congress may propose an amendment. C.) both houses of Congress must pass a resolution to propose an amendment.

    asked on September 1, 2016
  71. Algebra

    Alexis bought x boxes of cereal for $3 each, including tax, and paid with a $20 bill. Which expression represents the total amount of change she should receive. Whats the answer?

    asked on August 25, 2015
  72. physics

    a convex mirror has a focal length of -10.0cm. what is the image position for an object that is placed l20.0cm from the mirror?

    asked on May 19, 2015
  73. u.s global economics

    what aspects of your decison-making process fit the description of a rational choice? did you consider costs and benifits? did you pay attention to both monentary and non-monetary factors? did you consider opportunity costs and your long-term goals?

    asked on May 6, 2014
  74. math***help plz***

    please help me with math. A car travels 132 miles using 4 gallons of gas.At that rate,how far can the car travel using 7 gallons of gas? A.231 miles B.264 miles C.134 miles D.1,260 miles

    asked on February 6, 2014
  75. Algebra 1

    William, a logistician, needs to route a freight train that is 20 feet at its tallest point and 10 feet at its widest point within 3 days. The most direct path includes a single-track tunnel that needs 24 hour notice prior to use. If the tunnel is roughly

    asked on September 6, 2013
  76. reading

    an example of parallelism and page in to kill a mockingbird

    asked on February 2, 2013
  77. Adv AP Honors Chemistry

    2. Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation: CH4 + NH3 + O2  HCN + H2O You have 8 g of methane and 10 g of ammonia in excess oxygen. Answer the following questions: •

    asked on December 19, 2012
  78. Chem Help please!!!!!

    2. Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation: CH4 + NH3 + O2  HCN + H2O You have 8 g of methane and 10 g of ammonia in excess oxygen. Answer the following questions: •

    asked on December 19, 2012
  79. math

    mr. callaway needs to purchase enough grass seed to cover a 3000 square foot lawn and a 4200 square foot lawn. if 40 ounces of grass seed will seed a 2400 square foot lawn how many ounces does he need to seed both lawns

    asked on October 3, 2012
  80. algebra

    your internet provider offers two different plans. one plan costs $0.02 per email plus a $9 monthly service charge. the other plan costs $0.05 per email with no service charge. write a system of equations to model the cost of the two internet plans.

    asked on September 18, 2012
  81. Please help me!!!!

    2. Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation: CH4 + NH3 + O2  HCN + H2O You have 8 g of methane and 10 g of ammonia in excess oxygen. Answer the following questions: •

    asked on December 19, 2012
  82. Chemistry

    how many phosphorus atoms are present in 25.0 g of P4O10 ?

    asked on March 26, 2012
  83. Geometry

    1.) what is the length of the line segment whose endpoints are (1,1) and (3,-3)? 2.) what are the coordinates of the midpoint of the line segment whose endpoints are (c,0) and (0,d)?

    asked on February 19, 2012
  84. math

    a student soved the equation x/+5=1 without showing all the work. the student's solution is incorrect. what error did the student make?

    asked on February 8, 2012
  85. Physics

    A 1.00 kg block is attached to a spring with spring constant 14 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 31 cm/s. What is the amplitude of the subsequent oscillations?What is

    asked on January 26, 2012
  86. physics

    a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground? what is the deceleration of the rock when it hits the ground?

    asked on September 21, 2011
  87. Geometry

    Planes A and B intersect in line s. PLane C intersects A and B, but does not contain s. Draw and label the figure

    asked on August 30, 2009
  88. Biology

    If you've seen the movie GATTACA : What was in the card Eugene gave to Vincent? Why does Eugene think that he got the better end of the deal?

    asked on March 4, 2009
  89. math expressions

    write an expression for 5 and p more

    asked on October 29, 2008
  90. Algebra II

    When the range of the function is f(x) = 3x-5 when the domain is {-3, 0, 4}????

    asked on January 16, 2008
  91. algebra

    In a mathematics​ class, 72 students received an A on the third​ test, which is 150​% of the students who received an A on the second test. How many students received an A on the second​ test?

    asked on June 17, 2019
  92. Math

    When Carla looked out at the school parking lot, she noticed that for every 2 minivans, there were 5 other types of vehicles. If there are 39 vehicles in the parking lot, how many of them are not minivans? I am confused on how to solve this problem. I need

    asked on December 6, 2016
  93. MATH

    Find an equation of the tangent plane to the given parametric surface at the specified point. r(u, v) = u cos vi + u sin vj + vk; u = 7, v = π/3

    asked on November 16, 2016
  94. Math

    Consider F and C below. F(x, y, z) = (2xz + y2) i + 2xy j + (x2 + 15z2) k C: x = t2, y = t + 2, z = 3t − 1, 0 ≤ t ≤ 1 (a) Find a function f such that F = ∇f. f(x, y, z) = x2z+xy2+5z3+C Correct: Your answer is correct. (b) Use part (a) to evaluate C

    asked on November 9, 2016
  95. physics

    On a frozen pond, a 13.9 kg sled is given a kick that imparts to it an initial speed of v0 = 1.81 m/s. The coefficient of kinetic friction between sled and ice is μk = 0.122. Use the work kinetic energy theorem to find the distance the sled moves before

    asked on October 6, 2016
  96. Math log equation


    asked on January 11, 2016
  97. Trig Identities

    Prove the following identities: 13. tan(x) + sec(x) = (cos(x)) / (1-sin(x)) *Sorry for any confusing parenthesis.* My work: I simplified the left side to a. ((sinx) / (cosx)) + (1 / cosx) , then b. (sinx + 1) / cosx = (cos(x)) / (1-sin(x)) I don't know how

    asked on May 12, 2015
  98. MATH (STATS)

    To determine the views of a students on a particular campus about fraternities, an 11-point attitude scale was administered to a random sample of 40 students. This survey yielded a sample mean of 6 (the higher the score, the more favorable the view of the

    asked on October 8, 2014
  99. ENGLISH- Ordinary People by Judith Guest

    In the book Ordinary People by Judith Guest, what are her biases? How can one determine an authors bias if it is a fiction book?

    asked on August 27, 2014
  100. Calculus Help Please!!! URGENT!!!!

    Carbon-14 has a half-life of 5700 years. In a living organism, the ratio of radioactive carbon-14 to ordinary carbon remains fairly constant during the lifetime of the organism. After the organism’s death no new carbon is integrated into the organism’s

    asked on April 7, 2014


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