Popular questions and responses by Jordan
  1. chemistry

    Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers, the principal quantum number (n), the angular momentum quantum number (ℓ), the magnetic quantum number (mℓ),

    asked on November 4, 2016
  2. physics

    You throw a baseball directly upward at time t = 0 at an initial speed of 13.3 m/s. What is the maximum height the ball reaches above where it leaves your hand? At what times does the ball pass through half the maximum height? Ignore air resistance and

    asked on September 7, 2015
  3. Physics

    Which of the following is correct for the reflected ray if a light ray strikes a plane mirror at an angle of 50° from the normal? a. 40° from the surface of the mirror b. 40° from the normal c. 50° from the surface of the mirror d. 90° from the normal

    asked on July 12, 2013
  4. science

    An orange is placed on a table in a completely dark room, without any source of light. Which of the following choices correctly describes what an observer will see as he looks in the direction of the orange? A) The orange will not be seen at all because

    asked on April 23, 2019
  5. Chemistry

    At 25 °C, an aqueous solution has an equilibrium concentration of 0.00147 M for a generic cation, A (aq), and 0.000735 M for a generic anion, B2–(aq). What is the equilibrium constant, Ksp, of the generic salt A2B(s)?

    asked on May 6, 2016
  6. Chemistry

    What is the minimum amount of 6.0M H2SO4 necessary to produce 19.0g of H2(g) according to the reaction? 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g)

    asked on November 14, 2014
  7. AP GOVT

    The 25th amendment describes the sequence of events that would install the vice president as acting president against the will of the president. Outline that sequence of events.

    asked on August 17, 2009
  8. Chemistry

    Which of the following compounds contains both ionic and covalent bonds? SiO2 LiCN LiI PCl3

    asked on January 15, 2016
  9. Physics

    A shot-putter throws the shot (mass = 7.3kg) with an initial speed of 15.0 m/s at a 33.0 degree angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.00m above the ground.

    asked on September 12, 2009
  10. differential calculus

    a man 6 ft tall is walking toward a building at the rate of 4 ft/sec. if there is a light on the ground 40 ft from the building, how fast is the man's shadow on the building growing shorter when he is 30 ft from the building?

    asked on October 14, 2015
  11. Physics

    A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak.

    asked on November 1, 2010
  12. physics

    An unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.300 m/s2. If the acceleration from the wind lasts for 2.70 s, find the magnitude, r, and direction, θ, of

    asked on September 8, 2015
  13. chemistry

    Which neutral atoms have the following electron configurations in either a ground state or excited state? Enter the name or symbol. [Ar]4s23d3 - I know that this is Vanadium [Xe]6s24f1 - I thought that this was Lu but it counts it wrong each time! Help

    asked on November 4, 2016
  14. Physics

    The pressure and volume of an ideal monatomic gas change from A to B to C, as the drawing shows. The curved line between A and C is an isotherm. IMAGE:wvw.webassign.n3t/cj8/15-p-031.gif a)Determine the total heat for the process in joules. b)State whether

    asked on November 29, 2015
  15. CHM

    Calculate the percent ionization of hydrazoic acid (HN3) in solutions of each of the following concentrations A) 0.377 M B) 0.107 M C) 4.16*10^-2 M Ka= 1.9*10^-5

    asked on October 8, 2012
  16. math

    the gas tank of a car is 2/3 full. a trip uses up 1/4 of the gas in the tank. how full is the tank at the end of the trip? please include how you got the answer, thanks

    asked on September 21, 2009
  17. sinusoidal functions

    State an equation of a sinusoidal graph with the following properties. The central axis is at y = 5 Two consecutive minimums are found at (3, −1) and (13, −1 find values for a,b,c and d

    asked on February 6, 2016
  18. math

    A student takes a multiple choice quiz with 12 questions and 5 alternatives per question. Unfortunately, this student has no idea what any of the answers are, so he randomly selects an alternative for each question on the exam. Using this “blind

    asked on September 24, 2015
  19. Math

    An access ramp enters a building 1 meter above ground level and starts 4 meters from the building. How long is the ramp? If it is not possible, write “not possible” and explain why it is not possible.

    asked on June 23, 2011
  20. Algebra

    a. Do some research and find a city that has experienced population growth. Determine its population on January 1st of a certain year. Write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a

    asked on February 27, 2018
  21. physics

    While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone subsequently falls to the ground, which is 11.1 m below the point where the stone leaves your hand. At what speed does the stone

    asked on September 7, 2015
  22. math

    A room is 12 feet long and 10.5 feet wide. A scale model of the room is 3.5 feet wide. What is the area of the scale model? 10.3 square feet 14 square feet 36 square feet 122.5 square feet

    asked on July 20, 2015
  23. math

    Juan and rachel have the same number of marbles. Rachel gives away 10 marbles and Juan gives away 22 marbles. Rachel then has 3 times as many marbles as Juan. How many marbles did each of them have at first

    asked on November 19, 2014
  24. Math

    if 4/3 x 3/4 =5k whats k

    asked on March 28, 2013
  25. physics

    A car starts from rest on a curve with a radius of 120m and accelerates at 1.0m/s^2. Through what angle will the car have traveled when the magnitude of its total acceleration is 2.0 m/s^2?

    asked on September 22, 2009
  26. Pre-Calculus

    A parabolic satellite television antenna has a diameter of 16 feet and is 2 foot deep. How far is the focus from the vertex? is the answer 8ft?

    asked on August 21, 2019
  27. geometry

    Ray BD bisects ∠ABC so that m∠DBC = (x + 6)° and m∠ABD = (2x – 12)°. What is x?

    asked on September 27, 2017
  28. Chem 2

    4) Calculate the solubility of calcium hydroxide, Ca(OH)2 (Ksp = 5.5 x 10-5) in grams per liter in: a. Pure water b. 0.10 M CaCl2

    asked on July 29, 2014
  29. Geometry Help!!!

    . Katrina lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Katrina’s home and the football field at the exact point where an altitude to the right triangle formed by her home,

    asked on May 22, 2014
  30. Chemistry

    how many grams of aluminum sulfate are produced if 23.33 g Al reacts with 74.44 G CuSO4

    asked on May 21, 2012
  31. Chemistry.

    Calculate the mass of CaCO3 that would produce 40 mL at STP. STP means P= 1 atm and T= 0 degrees C. How do I find the mass?

    asked on November 22, 2008
  32. math

    Two sides of a triangle measure 25 cm and 35 cm.Which could be the third side.

    asked on June 12, 2017
  33. pre-calculus

    A developer wants to build homes on a rectangular plot of land 4 kilometers long and 3 kilometers wide. In this part of the city, regulations require a greenbelt of uniform width along two adjacent sides. The greenbelt must be 10 times the area of the

    asked on October 14, 2011
  34. Chemistry

    Mass of evaporating dish = 41.36 g Volume of saturated NaCl solution = 10.0 mL Mass of evaporating dish and NaCl = 44.50 g Mass of sodium hydrogen carbonate = 0.49g What is the morality(M) of the sodium chloride solution if you prepare in 1 liter of

    asked on August 30, 2011
  35. english

    help me please!!!!! The manner in which action is presented indicates verb: mood. tense. voice.

    asked on January 11, 2011
  36. cooking

    name the seven principle grains?

    asked on November 18, 2009
  37. Math

    Write y = -2/3x -4 in standard form using integers. 2x + 3y = -12 2x + 3y = -4 -2x +3y = -12 2x + 3y = 12 I just need to know the steps for the most part, I don't get them.

    asked on December 14, 2018
  38. Social Studies

    For their part, native Americans introduced Europeans, Africans, and agent to new foods, customs, and ideas. After 1492, elements of native American ways of life gradually spread around the world. Sadly, disease also spread from the Americans to Europe and

    asked on August 28, 2017
  39. Social Studies Please help

    I need the answers to Unit 4 lesson 8 Constituition for the United states. It is a pretest not a test and it is for connections academey.

    asked on December 16, 2016
  40. Physics

    A uniform rod of weight 5N and length 1m is pivoted at the 20cm mark from one end. A weight is hung from the other end so that the rod balances horizontally. What is the value of the weight?

    asked on September 29, 2016
  41. grade 12 math

    In 2011, the estimated population of Canada was 34 699 000. If the government wants to use an alphabetic string using letters of the alphabet for every person in Canada. How long should the string of letters (repetition allowed) be so that every person in

    asked on January 29, 2016
  42. physics

    A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball is fired horizontally with an initial speed of 900 m/s. Assuming air resistance can be neglected, approximately how long will

    asked on September 9, 2015
  43. S.S.

    4.What can you infer about what Lewis and Clark saw as they moved west from the Mississippi River. -the land on the east coast was more fertile than the land in the west. -the landscape rose sharply and then flattened as they went farther west. -the

    asked on January 5, 2014
  44. Math

    Find the unknown digit to make the sentence true 2.48>2.4__ 1>2.463 5.723

    asked on September 10, 2012
  45. economics

    4. Engineers for the Off Road Skateboard Company have determined that a 10% increase in all inputs will cause output to increase by 5%. Assuming that input prices remain constant, you correctly deduce that such a change will cause ________ as output

    asked on May 1, 2012
  46. Calculus (Help please)

    A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters

    asked on January 9, 2012
  47. math (Caluclas)

    A spherical ballon is leaking air at 2 cubic inches per hour.l How fast is the ballons radisu chancing when the radisu si 3 inches.

    asked on January 9, 2012
  48. dynamath

    the value of 2 coins is 35 cents. one of the coins is not a quarter. what are the 2 coins

    asked on June 7, 2010
  49. physics

    In the figure below, a constant horizontal force !@#$%^&p of magnitude 18 N is applied to a wheel of mass 12 kg and radius 0.50 m. The wheel rolls smoothly on the horizontal surface, and the acceleration of its center of mass has magnitude 0.50 m/s2. What

    asked on April 7, 2010
  50. algebra


    asked on May 6, 2008
  51. Chemistry

    Calculate the value of Keq for the following equation. Heat + N2(g) + 3H2(g) ↔ 2NH3(g) [N2] = .533M [H2] = 1.600M [NH3] = 0.933M Bob if you're here, can you tell me if adding a substance like "Heat" to the equation changes the whole problem? Or does it

    asked on May 21, 2020
  52. Math-trig

    So how do find the arcsec(-3)? secy = x secx = -3 1/cosx = -3 1 = -3cosx -1/3 = cosx Now what angle is this?

    asked on June 20, 2018
  53. Science

    Scientists have discovered a new virus that is very different from any known viruses. What type of matter is the virus most likely made of? A)combination of protons and some atoms that have not been discovered so far. B)Combination of protons of differnt

    asked on November 3, 2017
  54. Social studies PLEASE HELP!

    1. What was one impact of the Iranian Revolution on the United States? a. Higher oil prices*** b. Increased terrorisim c. Increased taxes d. Increased military spending

    asked on May 18, 2017
  55. Statistics

    A physical fitness association is including the mile run in its secondary-school fitness test for boys. The time for this event for boys in secondary school is normally distributed with a mean of 450 seconds and a standard deviation of 40 seconds. If the

    asked on February 21, 2017
  56. chemistry

    A sample of 45.1 g of methane gas (CH4(g)) has a volume of 6.20 L at a pressure of 2.90 atm. Calculate the temperature. Another one that I'm stumped on, last question for my practice exam, can you explain how to solve?

    asked on November 4, 2016
  57. chemistry

    When the following solutions are mixed together, what precipitate (if any) will forms? Write the reaction equation for all the cases and write the net ionic equation for only those reactions that react: potassium nitrate solution and barium acetate I am

    asked on November 4, 2016
  58. structural grammar

    Identify: May I go to the library?

    asked on September 23, 2016
  59. Chemistry

    If sulfur dioxide and oxygen can be made into sulfur troxide, what is the reverse reaction? 2SO3-->2SO2+O2*** SO3+O2-->SO5 2SO2+O2-->2SO3 SO3+2SO3-->3S+4O2

    asked on May 4, 2016
  60. Chemistry

    At equilibrium, what is the rate of production of reactants compared with the rate of the production of products? much higher higher*** the same lower

    asked on May 4, 2016
  61. Chemistry

    A 2.20 g-sample of a compound containing carbon, hydrogen, and oxygen is burned and it produces 4.61 g CO2 and 0.94 g H2O. What is the empirical formula of this compound?

    asked on September 7, 2015
  62. Science

    What elements have the highest ionization energy and why?

    asked on August 30, 2015
  63. Chemistry

    A compound is found to contain 50.05 % sulfur and 49.95 % oxygen by mass. What is the simplest (empirical) formula for this compound? They said to assume that it is 100 grams. I found the molar mass. S- 32.06 0-16.00 But now I don't know what to do. Please

    asked on August 27, 2015
  64. Java

    NEED HELP! I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when

    asked on October 26, 2014
  65. Physics

    A pendulum 1.70m long is released (from rest) at an angle 30 degrees. 1. Determine the speed(m/s) of the 60.0g bob at Theta = 15. 2. Determine the tension in the cord at the lowest point Theta = 0. 3. Determine the tension in the cord at Theta = 15. A

    asked on October 17, 2012
  66. Physics

    A copper pipe with an outer radius of 0.011 m runs from an outdoor wall faucet into the interior of a house. The temperature of the faucet is 4.4° C and the temperature of the pipe, at 3.1 m from the faucet, is 24° C. In fourteen minutes, the pipe

    asked on April 26, 2012
  67. geometry

    Point A is the incenter of (triangle) PQR. Find each measure. ARU AU QPK

    asked on November 8, 2011
  68. chemistry

    a mixture of 3 gases a, b and c is at a total pressure of 6.11 atm the partial pressure of gas a is 1.68 atm, that of gas b is 3.89 atm. what is the partial pressure of gas c?

    asked on May 24, 2010
  69. Math

    x(2nd power)+ 2x - 3 ________________________ (Divided by) x (2nd power) + 3x

    asked on September 2, 2009
  70. AP GOVT

    what documents in american politics have been influenced by John Locke's philosophies

    asked on August 17, 2009
  71. 3rd grade

    Explain how to compare 8,563 and 8699

    asked on September 18, 2008
  72. math

    a set of 20 cards is numbered 1,2,3,... ..20. Suppose you pick a card at random without looking. Find the probability of each event. Write as a fraction in simplest form. P(3 or 13)

    asked on March 25, 2008
  73. Math

    The standard form of a linear equation is Ax + By=c. If b=0 and A and c are positive which best describes the graph of this equation?

    asked on June 10, 2019
  74. World History

    How did Asoka foster peace during his reign? Select all that apply. -He posted his laws in public on stone pillars. -He made everyone observe Buddhist practices. -He fought wars of conquest throughout his rule. He built rest houses and set up hospitals.

    asked on November 28, 2018
  75. Math

    Jennifer got a box of chocolates. The box is a right triangular prism shaped box. It is 7 inches long, and the triangular base measures 2 inches x 3 inches x 4 inches. What is the surface area of the box of chocolates?

    asked on February 27, 2018
  76. History

    How did magnetic Compass And porcelain effect life in europe? Im really confused help me Please!

    asked on October 10, 2017
  77. Math

    Which question is an example of an statistical question? Ask all your friends,"What is your favoriet color?"(my anwser). Ask your teacher,"What college did you attend?" Ask one of your neighbors,"How Manu times do you eat pizza a month?"

    asked on October 7, 2017
  78. algebra

    How to solve 5x - 3y equals 0 to determine if x and y show direct variation?

    asked on September 24, 2017
  79. Geometry

    Which of the following describes the growth rate of the exponential function in the graph below?

    asked on June 12, 2017
  80. trig

    Suppose that θ is an angle in standard position whose terminal side intersects the unit circle at , −15/17,−8/17

    asked on June 4, 2017
  81. Geometry

    A mountain bike tire has a diameter of 26 inches. To the nearest foot, how far does the tire travel when it makes 32 revolutions?

    asked on May 16, 2017
  82. Math

    Thirty six members of the middle school choir or 30% participated in the regional contest as shown in the model below

    asked on April 28, 2017
  83. College Algebra

    A goldsmith has two gold alloys. The first alloy is 30% gold; the second alloy is 80% gold. How many grams of each should be mixed to produce 50 grams of an alloy that is 68% gold? amount of 30% gold ______grams amount of 80% gold ______grams

    asked on April 10, 2017
  84. Math1

    Bacteria can multiply at alarming rate when each bacteria splits into two new cells , thus doubling. If we start with only one bacteria which can double every hour , how many bacteria will have by the end of one day?

    asked on March 22, 2017
  85. chemistry

    The number of unpaired electrons and the element for [Xe]6s24f145d7: I know the element is Iridium but I cannot figure out the unpaired electrons!

    asked on November 25, 2016
  86. Math

    There are two rectangles that are similar. One rectangle has an area of 24 and the other has an area of 15 how do you find the ratio of the area of the first rectangle to the area of the second rectangle?

    asked on September 21, 2016
  87. Math

    A 75% alcohol concentration mixture of water and alcohol and was made by mixing 30 ml of pure alcohol with 150 ml of original mixture

    asked on September 9, 2016
  88. Algebra 1

    You buy a used car for $20,000. It depreciates at the rate of 21% per year. Find the value of the car for the given years (5 and 8) I'm using the equation v=c(1-r), and i end up getting 6154.11 ; im not sure if i subtract that from 20,000 or if that is my

    asked on July 28, 2016
  89. Chemistry

    In an endothermic reaction at equilibrium, what is the effect of raising the temperature? The reaction makes more products the reaction makes more reactants*** the reaction is unchanged the answer cannot be determined

    asked on May 4, 2016
  90. Chemistry

    Consider the reaction N2(g)+3H22NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases

    asked on May 4, 2016
  91. Chemistry

    Will 1 L of 1 M NaCl contain more chloride ions than .5L of 1M MgCl2? Explain.

    asked on April 19, 2016
  92. Science

    Which of the following can be accurately said about climax communities? A. Climax communities are always stable. (B. Restoration of the original climax community is always achieved at the same rate.) C. Climax communities are always uniform. D. Restoration

    asked on March 23, 2016
  93. math

    given a cylindrical waterbottle that has a volume of 1.25L, find the radius and a height that is 4-6 times the radius

    asked on January 16, 2016
  94. math

    Express each radical in exponential form. Simplify using the exponent laws when possible. a) √k^2/3 b √ab^2 c 4√81x^8y^12 d 3√x √x

    asked on December 26, 2015
  95. math

    Determine the solution of the following systems of linear equations using elimination. Briefly explain your work. 3x +2y = 19 2x – 3y = -6

    asked on December 22, 2015
  96. physics

    Only two forces act on an object (mass=4.41 kg), as in the drawing. Find (a) the magnitude and (b) the direction (relative to the x axis) of the acceleration of the object.

    asked on October 1, 2015
  97. physics

    Two forces A and B are applied to an object whose mass is 12.3 kg. The larger force is A . When both forces point due east, the object's acceleration has a magnitude of 0.443 m/s2. However, when A points due east and B points due west, the acceleration is

    asked on October 1, 2015
  98. Math

    The radius of a sphere is 3 cm . the radius is increased by a linear scale factor of 5:2 . calculate the surface area of the new sphere

    asked on September 22, 2015
  99. Algebra 2/Statistics

    From a squad of 12 cheerleaders, 10 will assemble themselves into a 4-level pyramid at the Homecoming rally. 1.) How many different combinations of cheerleaders can be used to build the pyramid? For this I got 12C10=66......Right or Wrong? 2.) The coach

    asked on April 30, 2015
  100. Algebra 2/statistics

    On a fair 6-sided die, each number has an equal probability p of being rolled. when a fair die is rolled n times, the most likely outcome (the mean) is that each number will be rolled NP times, with a standard deviation of sqrt NP(1-P). Brandon rolls a die

    asked on April 30, 2015


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