Newest questions and responses by Christine
  1. math (pre cal)

    find the domain and range of y=|5x^3+8|-2

    asked on August 17, 2018
  2. Chemistry

    Using the information below, which answer lists the salts in order of increasing solubility? PbSO4 Ksp = 1.6 x 10^-8 PbS Ksp = 8 x 10^-28 PbI2 Ksp = 7.1 x 10^-9 PbCl2 Ksp = 1.6 x 10^-5 a. PbS < PbI2 < PbSO4 < PbCl2 b. PbI2 < PbCl2 < PbS < PbSO4 c. PbCl2 <

    asked on June 13, 2018
  3. Chemistry

    You have the following acids and their conjugate bases available: Acetic Acid: CH 3COOH/CH3COO-; Ka = 1.8 × 10-5 Carbonic Acid: H2CO3/HCO3-; Ka = 4.2 × 10-7 Hydrofluoric acid: HF/F-; Ka = 7.2 × 10-4 Which of these acid/conjugate base pairs would be the

    asked on June 13, 2018
  4. Chemistry

    Given the following acid dissociation constants, which acid has the strongest conjugate base? a. HCN Ka = 6.2 x 10-10 b. HOCl Ka = 3.0 x 10-8 c. HIO3 Ka = 0.17 I believe the answer is HCN it has the lowest Ka and is the weakest acid.

    asked on June 13, 2018
  5. Chemistry

    If K > 1 at 25°C and 1 atm of pressure, then which statement is true about the reaction's equilibrium? a. There is always more reactant than product at equilibrium under all conditions. b. There is more product than reactant at equilibrium at these

    asked on June 13, 2018
  6. Chemistry

    In the chemical reaction where N2O4(g) is converted to 2NO2(g), if 0.5 M N2O4 and 0.15 M NO2 are present in the vessel, is the reaction at equilibrium? If not, which direction would the reaction proceed? (Kc = 4.4 × 10-3) N2O4(g) 2NO2(g) a. No, Q = 4.5

    asked on June 13, 2018
  7. Chemistry

    Which type of intermolecular forces would be expected in a sample of F2 gas? a. London forces, dipole interactions, and ionic interactions b. dipole interactions c. London forces d. London forces and dipole interactions I believe C is the correct answer.

    asked on June 13, 2018
  8. Chemistry

    What is the solubility of PbI2 in 0.4 M KI given the solubility constant of PbI2 is 7.1 x 10-9 a. 3.5 x 10-3 M b. 1.2 x 10-3 M c. 4.4 x 10-8 M Ksp = 7.1 x 10-9 Ksp = x * (2 * 0.4) (7.1 * 10-9)/.8 = x 8.8 x 10-9 = x ------ But this is not one of the

    asked on June 13, 2018
  9. Chemistry

    Which of the following gases would be most likely to experience ideal behavior at high pressures? a. F2 b. Ne c. C2H6 I think the answer is Ne. But I want to make certain. Thanks

    asked on June 13, 2018
  10. Chemsitry

    Three unknown solutions were prepared by pipetting 15.00 mL of an unknown nickel solution into a 200.00 mL volumetric flask and diluting to the mark. Then three samples were prepared from this dilute unknown solution by pipetting 5.00 mL of the dilute

    asked on January 15, 2018
  11. Chemistry

    Three unknown solutions were prepared by pipetting 15.00 mL of an unknown nickel solution into a 200.00 mL volumetric flask and diluting to the mark. Then three samples were prepared from this dilute unknown solution by pipetting 5.00 mL of the dilute

    asked on January 15, 2018
  12. Algebra

    I need help with this question: write an equation g(x) for when the parent function f(x) = |x| is translated one unit to the left and two units up, opening downwards, and vertically stretched by a scale factor of 5. Thank you!!!

    asked on December 5, 2017
  13. physics

    At some instant, a particle traveling in a horizontal circular path of radius 3.30 m has a total acceleration with a magnitude of 18.0 m/s2 and a constant tangential acceleration of 12.0 m/s2. Determine the speed of the particle at this instant and (1/8)

    asked on September 26, 2017
  14. math

    Find the least and greatest possible original numbers: ROUNDED PLACE is Tens, ROUNDED NUMBER is 460. What is the Least number and the Greatest number?

    asked on July 8, 2017
  15. government

    what is the separation of powers between the legislative and the executive branch regarding the budget.

    asked on May 12, 2017
  16. chemistry

    A balloon is filled with hydrogen gas. reaction is Fe(s) + H2SO4(aq) ----> FeSO4(aq) + H2(g). The volume of the ballon was 4800 m cubed and the loss of hydrogen gas during filling was estimated at 20.% What mass of iron splints and 98% by mass H2SO4 were

    asked on April 7, 2017
  17. Physics

    An object with a mass of (2.844x10^1) kg is subjected to a force of (3.964x10^3) N directed at an angle of (6.374x10^1) degrees from the x axis. A second force of (1.3x10^2) N acting in the negative X directions is also applied to the object. To two

    asked on February 12, 2017
  18. Math - Algebra (Percents and Ratios)

    At a little league game, three fourths of the people in the stands were kids amd the rest were parents. If the ratio of dad to moms is 3:4, what percent of the people attending the game were moms? (Give answer to the nearest percent.)

    asked on December 14, 2016
  19. Math

    The product of my numerator and my denominator is divisible by 2 .my denominator and my numerator differ by 3. My numerator is an even number .my denominator is a prime number.I am:______

    asked on December 6, 2016
  20. Math

    Two different numbers are randomly selected from the set ${ - 2, -1, 0, 3, 4, 5}$ and multiplied together. What is the probability that the product is $0$?

    asked on December 5, 2016
  21. Finance

    Ngata Corp. issued 19-year bonds 2 years ago at a coupon rate of 9.6 percent. The bonds make semiannual payments. If these bonds currently sell for 107 percent of par value, what is the YTM?

    asked on December 1, 2016
  22. Math - Aglebra One (Ratios)

    my grandfather has a huge coin collection of silver dollars and 50-cent pieces. He promised to give one fourth if his collection to the first of his grandchildren who can figure put the total value of his coins. The only cares he will give are these: There

    asked on November 30, 2016
  23. SS (Social Studies)

    I'm working on a social studies project and I really need help on it. The question asks to list three benefits of farming. My benefits are: 1) A stable Lifestyle 2)Stable Food Source 3)A Source For Trading I just need help to create slogans for them!

    asked on November 16, 2016
  24. Chemistry

    Write the balanced equations for the reactions: a) Reduction of Ag+ Ions with metal Fe. b) Oxidation of metal Mg with Cu2+ ion.

    asked on October 18, 2016
  25. MATH HELP!!

    Consider the three points A(2,3,1) B(1,-2,3) C(7,4,6) a) Show that ABC is a right triangle. b) Calculate the area of this triangle. c) Find the coordinates of the center of the circle circumscribed about triangle ABC

    asked on September 28, 2016

    Reaction: 1/2N2 + 3/2H2 --> NH3 Delta H = -46Kj/mol 1) Find delta H n(NH3)formed=5 mol. M(NH3=8.5g) 2) Find delta H a)3 mol H2 + 3 mol N2 b) 3 mol H2 + 0.5 mol N2 M NH3 = 17 g/mol ???

    asked on September 24, 2016
  27. Chemistry (Help!)

    Reaction: 1/2N2 + 3/2H2 --> NH3 Delta H = -46Kj/mol 1) Find delta H n(NH3)formed=5 mol. M(NH3=8.5g) 2) Find delta H a)3 mol H2 + 3 mol N2 b) 3 mol H2 + 0.5 mol N2 M NH3 = 17 g/mol ???

    asked on September 24, 2016
  28. differential calculus

    A bulldozer costs $120,000 and each year it depreciates 8% of its original value. Find a formula(equation) for the value V of the bulldozer after t years.

    asked on September 13, 2016
  29. Biochemistry

    An enzyme-catalyzed reaction was carried out in a 0.2M �Tris� buffer, pH 7.8. As a result of the reaction, 0.03 mole/liter of H+ was produced. (pKa of Tris =8.1) (a) What was the ratio of Tris+ (conjugate acid) / Triso (Conjugate base) at the start of

    asked on June 26, 2016

    a mass of 3kg rests on smooth horizontal table connected by a light string passion over a smooth pulley at the edge of the table to another mass of 2kg hanging vertically. when the system is released from rest with what acceleration do the masses move and

    asked on June 21, 2016
  31. MATH

    My ones digit is 1.My tens digit is 2 ore than my ones digit.My thousands digit is the difference when my tens digit is subtracted from my hundreds digit.what number am I?

    asked on June 20, 2016
  32. math

    write the largest 4-digit number using the digits 9 and 8.Use each digit twice

    asked on June 20, 2016

    A stone is dropped from the top of a cliff and one second latter a second stone is thrown vertically downward with a velocity of 20m/s. How far below the top of the cliff will the stone overtake the first?

    asked on May 29, 2016

    A football is kicked from the ground at an angle 30degree above the horizontal with an initial speed 18m/s and directly towards the goalkeeper. If the goal line is a horizontal distance 25m away calculate the vertical height at which the ball crosses the

    asked on May 29, 2016

    A ball is dropped onto the floor from a height of 20m. It rebounds to a height of 15m. If the ball was in contact with the floor for 0.01sec what was its average acceleration during the contact take g=10m/s

    asked on May 28, 2016

    A player kicks a ball at an angle of 37degree with the horizontal and with an initial speed of of 48ft/s. A second player standing at a distance of 100ft from the first in the direction of the kick starts running to meet the ball at the instant it is

    asked on May 28, 2016
  37. chemistry

    How many milliters of a 6.ooM HCl solution are required to react with 21.0 grams of Mg? I'm so confused. I know how to get the Molar mass of Mg and HCl but, does that even matter here?

    asked on May 7, 2016
  38. math

    according to a map the distance between hilltop and valleyfloor is 1 1/4 inches. if the map uses a scale of 1/4 inch to represent 1 mile inches what is the actual distance in mile from hilltop and valleyfloor?

    asked on April 24, 2016
  39. Math

    (2xy^2+16x^2y-20xy+8) / (4xy)

    asked on March 7, 2016
  40. math

    the model of a car is 4 1/8 inches wide. is three inches ok the model represents five feet what is the actual width of the car

    asked on February 1, 2016
  41. math

    what is 5(-4x+2)+3(5x-2)

    asked on January 22, 2016
  42. Language Arts

    Which of the following citations from The Watsons Go to Birmingham---1963 illustrates how the setting affects Byron? A. The way Byron kept his head down and was smiling and saying “Yes, ma’am” this and “No, ma’am” that, it looked like he had

    asked on January 21, 2016
  43. Physics

    A solid is completely submerged in a particular liquid and floats at a constant level.when the temperature of the liquid in the solid is raised, the liquid expands more than the solid. will this make the solid rise upward remain floating or sink explained

    asked on January 19, 2016
  44. Math

    Leah and Sam were playing a game with two dice. They took turns rolling the dice and finding the products of the numbers rolled. To make the game fair, if Leah rolls a certain product she gets 2 points. If Sam rolls a certain product, he gets 3 points.

    asked on January 13, 2016
  45. Science:Biology

    What are some unusual characteristics of food webs in agroecosystems?

    asked on January 6, 2016
  46. Ecology*Urgent*

    Why is Biochar an efficient way to store carbon? *Biochar is basically rich soil with charcoal*

    asked on January 6, 2016
  47. physics

    What are the speed and acceleration (increase/decrease or remain constant) of a ball rolling down a a) straight hill, b) concave hill c) convex hill Can someone explain why they are, not just the answers?

    asked on December 9, 2015
  48. Geometry

    a triangle has an area of 35 square inches, and its base is 3 inches more than it's height. Find the base and height of the trianlge

    asked on November 22, 2015
  49. physics

    the following point charges are placed on the x-axis: +2.0μC at x=20cm,-3.0μC at x=30cm and -4.0μC at x=40cm. What is the potential at x=0?

    asked on November 20, 2015
  50. physics

    two point charges +q and -q are separated by a distance d. aside from infinity, where else is the potential due to these two charges 0?

    asked on November 20, 2015
  51. chemistry

    at 25 celcius, how many dissociated OH ions are there in 8.0x10^-1 L of aqueous solution with pH 4.73?

    asked on November 16, 2015
  52. physics

    A truck accelerates uniformly from rest to 21.5m/s in 5.7sec along a level stretch of road. Determine the average power required to accelerate the truck for the following values of the weight (ignore friction) a) 1.00x10^4 N b) 1.45x10^4 N I used constant

    asked on October 26, 2015
  53. Biology

    The LEPR gene that encodes for the leptin receptor protein is approximately 23 kilo base pairs long. The receptor protein consists of 896 amino acids. A man has a mutation in an LEPR allele. Analysis of his DNA sequence for this lepr allele shows that

    asked on October 26, 2015
  54. Physics

    Skier A of mass 71kg slides down a slope and makes a completely inelastic collision with Skier B, who is stationary, and has a mass of 55kg.Immediately after the collision both skiers have a speed of 5.8m/s. a)Find the speed of skier A immediately before

    asked on October 25, 2015
  55. Physics

    A motorcycle rider plans to make a jump off a ramp. If he leaves the ramp with a speed of 38.0m/s and has a speed of 36.3m/s at the top of his trajectory, determine his max height above the end of the ramp. Ignore friction and air resistance. i got 6.45m

    asked on October 25, 2015
  56. geometry

    The length of a rectangle is 4 times its width. If the perimeter of the rectangle is 70 ft., find the area.

    asked on October 4, 2015
  57. Chemistry

    Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water . Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know dissociate means to take apart so for example; NaCl would look like Na^+ + Cl^- And another one like: Fe2(SO4)3 would look

    asked on October 4, 2015
  58. Chemistry

    Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water . Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know dissociate means to take apart so for example; NaCl would look like Na^+ + Cl^- And another one like: Fe2(SO4)3 would look

    asked on October 4, 2015
  59. science

    How fast does a kHz travel per second?

    asked on September 20, 2015
  60. Math

    The Wildcats basketball team scored 18 points in the first half of the game. All the points came from either 2 or 3 point baskets. If a total of 8 shots were made ( some two pointers and some three points), how many of each type of shot were made?

    asked on September 3, 2015
  61. physics 1401!

    A closed-end tube is evacuated and placed with its open end beneath the surface of a reservoir of water. The water rises to a height of 9.5 m. If the density of water is 1000 kg/m^3, what is the pressure at the bottom of the column of water?

    asked on July 7, 2015
  62. physcial science

    What are the wavelength limits of the audible range of the sound spectrum? (Use the speed of sound in air. The speed of sound in air is 344 m/s. The audible range of the sound spectrum contains frequencies as low as 30 Hz and as high as 25 kHz.)

    asked on June 23, 2015
  63. physcial science

    Picnickers see a lightning flash and hear the resulting thunder 7.9 s later. If the storm is traveling at a rate of 20. km/h, how long, in minutes, do the picnickers have before the storm arrives at their location?

    asked on June 23, 2015
  64. Math

    10-2/3p=42 I think the answer is p=63

    asked on May 28, 2015
  65. english/polsci essay excerpt edit

    Can someone edit this? Also, does anyone edit whole papers? (Essay redacted per request from original poster.)

    asked on May 3, 2015
  66. Math


    asked on May 1, 2015
  67. Chemistry

    A 5.00 L flask with mass of 463.873 g is filled with Ar gas to 3 atm pressure at 292 k. (19 celsius + 273) what is the mass of flask and gas?

    asked on April 5, 2015
  68. physics

    a 20newton object Is pulled along a horizontal surface at a constant velocity by a 30N force. What is the coefficient of friction

    asked on March 25, 2015
  69. Math

    Kool Klothes has determined that the revenue function for selling x thousand pairs of shorts is R(x) = -5x^2 + 21x. The cost function C(x) = 2x + 10 is the cost of producing the shorts. a) How many pairs of shorts must the company sell in order to break

    asked on March 22, 2015
  70. math

    An aeroplane leaves a runway and climbs at an angle of 15 degrees. After flying 800 meters, how high is it above the runway?

    asked on March 11, 2015
  71. essay edit excerpt

    can someone edit this? The Monroe Doctrine allowed the president to extend his diplomatic power by specifying that he can provide for defense against other nations. Prior to this document’s establishment, the Neutrality Proclamation set the skeleton of

    asked on March 5, 2015
  72. Chemistry Need Help

    How many grams of baking soda, NaHCO3, are needed to react with 125 mL of stomach acid having an HCl concentration of 0.05984 M? The reaction is NaHCO3(aq) + HCl(aq) → NaCl(aq) + CO2(g) + H2O(l). Do I need to chenage mL to L first? I'm really stuck with

    asked on March 2, 2015
  73. Chemistry

    The density of water at 30*C is 0.9956g/mL. If the specific gravity of acetic acid is 1.040 at 30*C, what is the density of acetic acid at 30*C?

    asked on February 23, 2015
  74. math NEED HELP

    2x+5 x+4 ------ - --------- x^2+3x+2 x^2+3x+2 i keep getting x+9 ------------ (x+1)(x+2)

    asked on February 6, 2015
  75. 8th grade math

    iPhone is designing a smart phone with a square screen. The area of the screen will be 169 cm with an exponent of 2. What is the height of the screen? I think the answer is 13. Am I correct.

    asked on January 7, 2015
  76. Math

    In the Atlantic ocean off the coast of Bermuda lies a 500,000 square mile region called th Bermuda triangle . If the sides of the triangle are about 959 miles, 1,011'miles, and , 1,033, prove whether or not the Bermuda trian is a right triangle ?

    asked on January 7, 2015
  77. essay edit excerpt

    how do I expand on this? My academic prose has exhibited creatively re-establishing an original element with new messages through “A Closer Look: Analyzing Tangled (2012) and Its Deeper Critique of "Rapunzel" (1812). Firstly, I state that “most would

    asked on December 11, 2014
  78. essay excerpt edit

    Can someone edit this My writing has exhibited creativity by introducing a new perspective of stereotypical conventions that resulted in increased cognition through “A Closer Look: Analyzing Tangled (2012) and Its Deeper Critique of "Rapunzel" (1812).

    asked on December 10, 2014
  79. essay excerpt edit- Does this flow/make sense?

    Creativity was initially understood as the process that, appropriate to its root, created something new. As such, it is defined by the Oxford English Dictionary as "the quality of creating" or "cause[ing a new element] to exist,” (Creativity)." It has

    asked on December 4, 2014
  80. essay excerpt edit

    Can someone edit this? I already edited it but it would still be helpful to get feedback. Although Benjamin does not explicitly define creativity in his article "The Work of Art in Mechanical Reproduction" he does make mention of "mechanical reproduction,"

    asked on November 27, 2014
  81. Essay Excerpt Edit

    Can someone edit this? Please be forewarned that its a first draft so I am aware that it is not developed yet. Any feedback would help a lot. Clearly, Jason Russell's Kony 2012 campaign proves how YouTube has altered our understanding of creativity from

    asked on November 24, 2014
  82. chemistry

    why might consuming more of daily rni of a vitamin or mineral be harmful

    asked on November 18, 2014
  83. essay edit

    can someone edit this? Thanks in advance! Mcnamara's Eleven Points in light of the US's involvement with the War in Iraq The inevitable fog of misunderstanding and irrational human error within war can lead to mass killings, chaos, and inevitable failure.

    asked on November 13, 2014
  84. Math

    Please help me write this in an equation. "Tyrone bought 15.3 gal of gasoline priced at g dollars per gallon, 2 qt of pil priced at q dollars per quart, and a wiper blade priced at $3.79. Write an expression that represents the total cost of these items.

    asked on November 9, 2014
  85. Math!!


    asked on November 4, 2014
  86. essay edit

    Can someone look over this? I've been working on wordiness, sentence structure, and repetition. Tangled and its Hidden Critique of Rapunzel Peeking at the mere surface of the film Tangled (2010) directed by Nathan Greno and Brian Howard, most would presume

    asked on November 2, 2014
  87. essay excerpt edit

    can someone edit this? To contrast, in the film Tangled (2010) the mother of Rapunzel, who is exhibited as a Queen, also falls ill, although it is due to legitimate medical ailments, as opposed to a sense of helplessness. She is then limited to a bedridden

    asked on November 2, 2014
  88. Math

    Find the radius of a sphere with a volume of 1,767.1 m (3 cubed) would I use the formula V=4/3*pie*radius (3 cubed)

    asked on October 29, 2014
  89. Math

    Please help..not wanting answer just where to start... A cylinder has a radius of 5 centimeters and a height of 12 centimeters. What would the height of a cone need to be if it is the same volume and radius?

    asked on October 29, 2014
  90. Math

    A cylinder has a radius of 5 centimeters and a height of 12 centimeters. What would the height of a cone need to be if it is the same volume and radius?

    asked on October 28, 2014
  91. Math

    Find the volume of a bag if the bag is 5.5in X 3in X 8in

    asked on October 27, 2014
  92. math

    a telephone pole is supported by two cables attached to points on the pole 15 ft above ground and to points on the level ground 8 ft from the foot of the pole. what is the total length of the two cables

    asked on October 13, 2014
  93. Divisors?

    What is the largest remainder possible if the divisor is 10? I am helping my child and do not know how to do this Please show me how to and how to explain it.. Thank u

    asked on October 9, 2014
  94. 5th grade Math

    A recipe call for the following ingredients: 3c flour 1/2t salt 3/4c sugar 4c fruit 2T butter To make 2/3 of the recipe, how much of each ingredient should you use. Question, should I multiply of divide by 2/3?

    asked on September 21, 2014
  95. ENGL essay excerpt edit

    can someone edit/ give any feedback on this? Additionally, my essay The Latent Path to Progression demonstrates how creative freedom is necessary in the development of societal contributions that will ultimately lead to its progression. For instance, I

    asked on September 13, 2014
  96. english essay edit

    Furthermore, Your Creative Elusive Genius sharply contrasts to John Stuart Mill's Chapter III: Of Individuality as One of the Elements of Well-Being. For instance, Elizabeth Gilbert presents an anecdote of Thomas Waits, who she describes as an anxious and

    asked on August 31, 2014
  97. chemestry

    What is the energy of the photon emitted when the electron in a hydrogen atom drops from energy level E5 to energy level E2?

    asked on July 12, 2014
  98. essay excerpt edit

    can someone edit this This racially perceptive scene clearly demonstrates how social separation due to racism will always end in bitterness. On the surface, Radio Raheem is merely speaking of how life is a consistent battle between good versus evil, love

    asked on June 2, 2014
  99. english- Intro edit

    can someone edit this The mere pigment of one’s skin deep makeup has served as the basis for hurtful bias, racism, and other discriminating actions within our society. The racially perceptive film, Do the Right Thing by Spike Lee, exemplifies how

    asked on May 26, 2014
  100. calculus help

    Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. x = 4(square root of (3y)), x = 0, y = 3; about the y-axis V=?????

    asked on May 4, 2014


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