Al

Popular questions and responses by Al
  1. math

    Aaron earns $1.50 for every video game he sells. When he sells one carton of 30 video games, he earns an additional $10. What is the minimum number of video games he has to sell in order to earn $450?

    asked on March 5, 2015
  2. chemistry

    If the formula of a oxide is X2O3, what is the formula of the chloride of X? (A) XCl3 (B) XCl (C) X3Cl (D) XCl6

    asked on September 8, 2008
  3. Chemistry

    How many valence electrons does molybdenum have? (give only 1 answer) Go to this site and look for the electrons available in the outside shells. Click on element #42 and scroll down the menu on the left side until you come to electron configuration.

    asked on April 1, 2007
  4. Math fractions

    Jackie loves to cook fried foods. She recorded the total amount of oil that she used each month in the table below. In January she used 3/5 of the amount of oil that she used in Fedruary. Fill in the amount of oil that Jackie used in January in the table

    asked on April 2, 2017
  5. Chemistry

    List Sn , Sn2+, Sn4+ in order of decreasing ionization energy

    asked on October 18, 2015
  6. integral calculus

    a rectangular plate 12ft long and 8 ft wide is submerged vertically with the longer edge in the surface of the water. Find the force on one side of the plate.

    asked on May 7, 2012
  7. Calculus

    a hyperbola passing through (8,6) consists of all points whose distance from the origin is a constant more than its distance from the point (5,2). find the slope of the tangent line to the hyperbola at (8,6).

    asked on October 26, 2014
  8. Chemistry

    A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.135g of this subunit was dissolved in enough water to produce 2.00 mL of solution. At 28 ∘C the osmotic pressure produced by the solution was 0.138

    asked on June 27, 2014
  9. chem

    Aspartame, an amide, is the sweetener commonly used in diet cola.What is the carboxylic acid that is a reactant in the production of aspartame.

    asked on April 26, 2012
  10. Physics

    Water flows from a fire truck through a hose that is 11.7 cm in diameter and has a nozzle that is 2.0 cm in diameter. The firemen stand on a hill 5.0 m above the level of the truck. When the water leaves the nozzle, it has a speed of 20.0 m/s. 1) Determine

    asked on April 10, 2017
  11. Geometry

    The circumference of a circle is 20 pi cm. Find diameter, radius, and area of the disk, the length of an arc of 90 angle and area of a 90 angle sector. Answer in terms of pi. d= ___ r= _____, disk area= _______ arc length =______, sector area =________

    asked on February 26, 2015
  12. CHEMISTRY

    Identify the conjugate base in the following reaction. H2O (l) + HCO31- (aq) ¨ H3O+ (aq) + CO32- (aq)? Identify the Bronsted-Lowry acid in the following reaction. H2O (l) + HCO31- (aq) ¨ H3O+ (aq) + CO32- (aq)

    asked on December 3, 2014
  13. chemistry

    A mixture of 3.00 g of silver and copper metals was dissolved in excess nitric acid. Resulting salts, silver(I) nitrate and copper(II) nitrate, were isolated and dissolved in enough water to make 0.100 L of a solution with a total concentration of the

    asked on September 29, 2014
  14. math

    The radius of a circular oil slick expands at a rate of 8 m/min. a. How fast is the area of the oil slick increasing when the radius is 30 m? = 480pi b.If the radius is 0 at time t=0 , how fast is the area increasing after 2 mins? i cannot get part b!

    asked on October 12, 2007
  15. Math

    Lee walks along the edges of a rectangular pool from point A to B to C to D, a distance of 38 metres. Marina walks along the edges of the same pool from B to C to D to A, a distance of 31 metres. What is the perimeter of the pool, in metres?

    asked on October 24, 2017
  16. math

    At 8 A.M., Dylan and his neighbor, Mickey, drove in their cars to a city that was 240 mi. away from their neighborhood. When Dylan reached the city, Mickey had 40 mi. to go. He finally completed the trip 48 minutes later. a) How long did it take Mickey to

    asked on February 26, 2015
  17. math

    A basket contained 75 brown eggs and some white eggs. Salima found that 15% of the total number of eggs were rotten. Of the rotten eggs,2/3 were white and the remaining 6 were brown. a) How many white eggs were there altogether? b) How many eggs were not

    asked on February 19, 2015
  18. chem

    carbamic acid and ammonia react to form an amide and water. What is the amide product of this reaction.

    asked on April 26, 2012
  19. geometry

    find the area bounded by a regular pentagon with radius 6 cm. round to the nearest tenth.

    asked on March 2, 2015
  20. Physics

    ANY ANSWERS WILL HELP! THANKS! 1. Isolated points of electric charge are called ____. 4b. ____ was the American physicist who first measured this fundamental unit of charge. 5. This type of electrification occurs when the charging rod touches an

    asked on December 17, 2013
  21. calculus

    lim_(theta->0)(cos(6 theta)tan(6 theta))/(theta)

    asked on June 2, 2012
  22. physics

    A simple Geiger counter is constructed out of a setup similar to what we just used in problem 5. A thin wire with a linear charge density _ is held in the center of a cylindrical tube, which is filled with an inert gas. When a high speed 2 particle coming

    asked on September 23, 2008
  23. physics

    a thin wire with linear charge density _ is surrounded by a conducting cylindrical shell. (a) If the electric field must be zero inside a conductor, is the electric field due to the wire shielded from extending beyond the conducting shell? (b) Find the

    asked on September 23, 2008
  24. physics

    the region 0 < r < r1 is a charged insulating sphere with uniform charge density _E, the region r1 < r < r2 contains free space, and the region r2 < r < r3 is an insulating spherical shell with uniform charge density ��_E. What is the

    asked on September 23, 2008
  25. calculus

    A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $30/ft and on the other three sides by a metal fence costing $10/ft. If the area of the garden is 42 square feet, find the dimensions of the garden that

    asked on November 4, 2007
  26. mustangs/horses

    Does anybody know any really good web sites on mustangs or horses? Thank you http://en.wikipedia.org/wiki/Mustang_(horse) http://www.ansi.okstate.edu/breeds/horses/mustang/

    asked on March 28, 2007
  27. Physics

    An airplane traveling at 200 mph in a direction of 40 degrees north of east encounters a wind blowing east at 50.0 mph. Find the velocity of the plane measured from the ground.

    asked on September 26, 2017
  28. algebra

    The equation f(x) = 4x2 − 16x + 9 represents a parabola. What is the vertex of the parabola? (2, −7) ( −2, 57) (4, 9) ( −4, −137)

    asked on April 11, 2016
  29. physics

    An airplane is heading due south at a speed of 734 km/h . A wind begins blowing from the southwest at a speed of 110 km/h (average). In what direction should the pilot aim the plane so that it will fly due south?

    asked on September 3, 2015
  30. Chemistry

    I need definitions for chemistry and I can't come up with any heterogeneous reaction homogeneous reaction activation energy activation energy activated complex elementary reaction

    asked on March 16, 2015
  31. MATH

    a rodeo performer spins a lasso in a circle perpendicular to the ground. the circle has a diameter of 118cm. she starts with the knot at the lowest point which is at 90 cm above the ground, she spins the lasso and .5 seconds later the knot is at the

    asked on January 16, 2015
  32. AP Chem

    MnS(s) + 2 H+ --> Mn2+ + H2S(g) At 25 C the solubility product constant, Ksp, for MnS is 5 x 10-15 and the acid dissociation constants K1 and K2 for H2S are 1 x 10-7 and 1 x 10-13, respectively. What is the equilibrium constant for the reaction represented

    asked on January 13, 2013
  33. college

    For the reaction P4(s) + O2(g) = P4 O10(s) Identify the limiting reaction mixture conataining 1.00 mol each of P4 and O2

    asked on March 10, 2010
  34. chem.

    How much heat would be required to warm Earth's oceans by 1.0 degree celsius ? Assume that the volume of Earth's oceans is 137x10^7 km^3 and that the density of seawater is 1.03 g/cm^3. Also assume that the heat capacity of seawater is the same as that of

    asked on February 5, 2010
  35. science

    how to make an american flag 3-D with materials but not on paper

    asked on February 5, 2009
  36. elementary

    perimeter for a 3ft x 3 in answer in ft and in inches

    asked on February 5, 2009
  37. chemistry

    how much oxygen is produced by heating 20g of mercury (II) oxide if 18.6g of mercury is produced?

    asked on March 24, 2008
  38. Math

    Which ratio is equivalent to 3/15 A) 1/3 B) 3/5 C) 1/5***** D) 15/3

    asked on November 13, 2018
  39. physics

    Machines A, B, and C do the same amount of work, but they each take a different amount of time. Machine A takes more time as compared to machine C. Machine B takes the maximum time to do the same amount of work. Which machine expends the most power doing

    asked on May 21, 2017
  40. Physics

    You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 5.50 m/s. You jump at an angle of 29.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.34 m away from you. If

    asked on September 27, 2016
  41. Chemistry

    when potassium in water are combined they produced 4000.0 kJ of heat along with potassium hydroxide and hydrogen gas. how much energy would be produced if you dumped a 1.00 kg chunk of potassium into a swimming pool? s this reaction what is the enthalpy

    asked on October 19, 2015
  42. Chemistry

    When methane is combusted with excess oxygen 891 kJ of energy is produced start with 100g of methane. how much energy is produced? is this reaction endothermic or exothermic? Also provide enthalpy change for this reaction: CH4 + 2O2 (arrow)= CO2 + H2O +

    asked on October 19, 2015
  43. Chemistry

    I have to do a lab on equilibrium, where you have to transfer water with two different sized straws, and answer questions based on that the questions are about the significance of where there is a flat line on the graph, and the significance of the point

    asked on March 19, 2015
  44. Math

    Kelly was helping a friend with cleaning her bedroom. Kelly spent two hours and cleaned 80% of the room. what fraction of the room did Kelly help clean? How would I solve this - divide?

    asked on January 21, 2015
  45. Calculus

    Find al points where tangent lines to: (x^2+y^2)^(3/2) = sqrt(x^2+y^2) + x is either horizontal or vertical.

    asked on October 26, 2014
  46. Calculus

    Find al points where tangent lines to: (x^2+y^2)^(3/2) = sqrt(x^2+y^2) + x is either horizontal or vertical.

    asked on October 26, 2014
  47. Calculus

    The graph of the equation x2 − xy + y2 = 9 is an ellipse. Find the lines tangent to this curve at the two points where it intersects the x-axis. Show that these lines are parallel.

    asked on October 26, 2014
  48. Science

    -Describe the zero sum rule -True of False: The formula for the nitride ion is N^(-3) -True of False: The stock system shows the charge on the negative ion Answer this Question

    asked on October 1, 2014
  49. math

    1. Finding the Counterfeit Coin. You have 5 coins. You know that one of them is counterfeit and weighs less than the others. Suppose also that you have a balance scale. Is there a strategy for finding the counterfeit coin using the balance scale only

    asked on September 30, 2014
  50. History.

    Do you think the CRTC's restriction on media freedom were reasonable in the 1960's? DO you think they are reasonable now? Explain.

    asked on May 15, 2014
  51. chemistry

    determine the density in copper at 1305K. 1 mole of vacancies in copper is 104kJ. The answer I calculated this time is 8.4572*10^22. I am not sure if this correct. Thanks.

    asked on November 17, 2013
  52. Physics

    6) The relationship between force and acceleration is given by Newton’s 2nd Law: Fnet = ma. In this case this becomes: !@#$%^&p – Ff = ma. a. Rearrange this formula to fit the equation of a straight line: y = mx + b b. What does the y‐intercept

    asked on October 30, 2013
  53. chem

    Predict out of which of the following would a dialysis bag be permeable to? Potassium Ions= DNA= Sucrose= No? Starch =No? Sulfate Ion=yes Chloride Ion=yes Protein=No I'm not sure about potassium ions or DNA though.

    asked on April 18, 2012
  54. SOCIAL STUDIES

    HOW OLD IS THE GREAT BARRIER REEF?

    asked on April 16, 2012
  55. grade 10 chemistry

    factor labels 200ml per hour to kl per year

    asked on February 29, 2012
  56. Algebra

    what is the square root of 5 divided by 2 times the square root of 125?

    asked on October 23, 2011
  57. Chemistry question Please help

    Consider the expected conductivities of CaCl2(aq) and Ca(OH)2(aq). Which of these can be expected to have the higher conductivity. Explain your reasoning.

    asked on October 11, 2011
  58. Math

    In a circle, the measure of an inscribed angle is one-half the measure of its intercepted arc. Is this true or false?

    asked on January 17, 2011
  59. math

    substitution 4x + 3y = 3 7x - 9y = 6

    asked on January 13, 2011
  60. math

    solve with substitution 5x - y=-1 15x=2y

    asked on January 12, 2011
  61. Chemistry

    what would an open manometer look like in which the pressure of the gas sample is 34.5 kPa higher than the atmosphere?

    asked on January 6, 2011
  62. science 6th grade

    Statement: Most compounds that produce this in aqueous solution are ionic. Does this statement refer to an acid or a base or both?

    asked on January 2, 2011
  63. math

    N and P are integers greater than 1 5N is the square of a number 75NP is the cube of a number the smallest value for N+P IS what? i cant figure it out, please help thank you so much

    asked on October 4, 2010
  64. Chemistry

    When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 11.0 oz drink from 75 degree Fahrenheit to 37 degree Fahrenheit, if the heat capacity of the drink is 4.18 J/g degree celsius ? (Assume that the heat transfer is 100 %

    asked on February 5, 2010
  65. physics

    Infrared telescopes are very sensitive to increases in temperature. If the temperature rises above a certain point, the telescope is blinded because it becomes a bright source of infrared light itself (if that doesnft immediately make sense, it is

    asked on December 9, 2008
  66. Physics URGENT!!!

    At a certain location, the horizontal component of the earth's magnetic field is 2.5 x 10^-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the proton.

    asked on November 9, 2007
  67. government

    these are some questions i am having trouble with: 1. what margin is required to ratify treaties 2. where in the constitution is the ratification power described 3. what body has the power to impeach the president 4. what vote is required to impeach 5.

    asked on September 23, 2007
  68. science

    Distinguish between high-energy and low-energy You have to put this in context. We don't do homework for you, but will be happy to critique your thinking. You have to put this in context. We don't do homework for you, but will be happy to critique your

    asked on July 6, 2007
  69. Easy Chemistry

    How many valence electrons does molybdenum have? it depends, it can either have valence electrons of 6,5,4,3,2.

    asked on March 29, 2007
  70. trig

    How do I find 1 positive and 1 negative coterminal angle for: 1) -460 degrees 2) 11pi/4 3) -12pi/5 WERE DO YOU GO TO GOOGLE BECAUSE I TIRED!

    asked on January 17, 2007
  71. Help w/Quattro Formula

    Am getting frustrated w/failing to get Quattro Pro formula right. Here's what I'm looking for: Col. A = Base period number Col. B = Given number this current period. Formula I need: If B >= A, what is %? (Example: A=20, B=30, the # I want should read 50.0,

    asked on July 20, 2006
  72. Maths

    A glass is 4/7 full then 70 cm3 of orange juice is poured in the glass is now 3/4 full what is the total volume of the glass?

    asked on January 29, 2020
  73. Math

    I am in even 3 digit number I am less than 200 but more than 190 my son is 18 what is my number

    asked on August 27, 2019
  74. pre-calc

    A dog is attached to a 2121​-foot rope fastened to the outside corner of a​ fenced-in garden that measures 1818 feet by 2323 feet. Assuming that the dog cannot enter the​ garden, compute the exact area that the dog can wander.

    asked on July 12, 2019
  75. math

    7 1/2-1 9/10 what is the difference? PLZ Help!!!!!

    asked on November 2, 2018
  76. physics

    If you pull one end of the rope 1.4 downward with a 46- force, find the height you can lift a 170- load.

    asked on October 9, 2018
  77. Math

    Use benchmark to estimate the sum, difference, or product 14/16 + 1/5 A. 2 B. 0 C. 1/2 D. 1

    asked on October 3, 2018
  78. Math please help me quickly

    1/4 divided by 3/8 and I'm so confused because I know it's division but the answers are A.1/3 B.2/3 C.3/4 D.3/8 and I just need help

    asked on September 25, 2018
  79. Social Studies

    As a result of their large oil supplies many Middle Eastern economies rely on what in oder to grow? A) automobile manufacturing B) government regulations C) exports D) tariffs

    asked on September 24, 2018
  80. Math please help

    So I have this question and I don't understand Find the missing number. 32/52 ?/13 A.) 9 B.) 4 C.) 7 D.) 8 so can anyone help me please

    asked on September 14, 2018
  81. college chemistry

    How many grams of NaCN are needed to react with 50.0 g of MgCl2?

    asked on February 18, 2017
  82. Statistics

    A VP of manufacturing claims that more than 3% of items produced using a certain assembly line are defective. A random sample of 400 items is selected. At the 10% level of significance, which of the following would be part of the standardized decision

    asked on October 25, 2016
  83. us history

    You have OREGON FEVER! On your voyage west, there are many things you must plan for if you plan to make it to your final destination. Choose one of the following to complete and submit to Mrs. Sterling through webmail for extra credit. • You are

    asked on April 15, 2016
  84. laney college

    The following questions are based on the “Mt. Dome, California,” quadrangle (Figure 33-2 found on page 228 of the Laboratory Manual; enlarged to scale 1:48,000; contour interval 40 feet) and the stereogram of the same

    asked on March 23, 2016
  85. English assignment

    I need to make a thesis statement about racism based on my two books. The two books that I chose to do was: secret life of bees and black like me. I am having trouble making a thesis. I'll give you all the information about the racism in these two books.

    asked on January 13, 2016
  86. Chemistry

    2Fe2O3 + 6C + 3O2 -> 4Fe + 6Co2 What mass of Fe2O3 present is needed to produce 15 of iron? what mass of CO2 is released when 15g of iron is produced?

    asked on October 18, 2015
  87. Chemistry

    Element X has the highest first electron affinity in its period; the ground state electron configuration of it's most common ion is [Kr] 5s^2 4d^10 5p^6 a Element Y is the second largest element in it's period; it's valence electrons are in orbital(s) that

    asked on October 18, 2015
  88. prealgebra

    translate; the quotient of 41 and the product of a number and 35

    asked on September 17, 2015
  89. physics

    PLEASE HELP! When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.2 m above the ground and its path initially made a 39 ∘

    asked on September 8, 2015
  90. phyics

    When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.2 m above the ground and its path initially made a 39 ∘ angle with the

    asked on September 6, 2015
  91. physics

    When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.2 m above the ground and its path initially made a 39 ∘ angle with the

    asked on September 6, 2015
  92. Physics

    I really need help with this question, i've found that a texbook said fourth hand, but I don't know if that's a thing Which rule is used to find the direction of force produced by electromagnetic induction? a. First right-hand rule b. Second right-hand

    asked on June 3, 2015
  93. Physics

    I need some help with a few multiple choice quadroons that I don't understand 1.EMF is best described as a(n) a. electric force. b. energy measure. c. charge flow rate. d. potential difference. 2. Which rule is used to find the direction of force produced

    asked on June 3, 2015
  94. Math

    The parking lot has 5/6 as many vans as trucks. What equation can be use to show the number of vans?

    asked on May 28, 2015
  95. geometry

    the following system of equations bounds a region. If the region is rotated about the line x=0, what is the shape of the resulting solid figure? y=-2x+4 X=0 Y=0 Y=2

    asked on March 24, 2015
  96. physics

    We have to do a lab in physics where we research and write on real life applications of momentum, the guidelines we have are Research Assignment: Application of Momentum in Real-Life Situations Task: Choose any real-life situation where the concept of

    asked on March 24, 2015
  97. Math

    Davida bought a pair of earrings, each in the shape of an isosceles triangle with equal side lengths of 24 mm and a base length of 16 mm. She used one earring to make another pair of earrings, similar in shape, with the base length equal to 11 mm. What is

    asked on February 27, 2015
  98. Chemistry

    what is the trend in the atomic radii as the atomic number increases across a period? What is the exception to this trend? I know the radius decreases as you go from left to right, but I can't figure the exception, I read somewhere that it's the noble

    asked on February 23, 2015
  99. Chemistry

    what is the trend in the atomic radii as the atomic number increases across a period? What is the exception to this trend? I know the radius decreases as you go from left to right, but I can't figure the exception, I read somewhere that it's the noble

    asked on February 23, 2015
  100. Chemistry

    what is the trend in the atomic radii as the atomic number increases across a period? What is the exception to this trend? I know the radius decreases as you go from left to right, but I can't figure the exception, I read somewhere that it's the noble

    asked on February 20, 2015

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