Popular questions and responses by Jess
  1. history

    Which Chinese religious text, whose title translates to The Book of Changes, influenced Hinduism in India?

    asked on November 27, 2019
  2. Math

    which symbol is used to make -6 ? |-8| a true statement? >* < = which symbol is used to make -5 ? -8 a true statement? >

    asked on August 14, 2017
  3. chemistry

    I keep thinking that 3 is the van't hoff factor for ammonium chloride, but I keep getting my answer wrong. Any ideas?

    asked on February 11, 2011
  4. geometry

    the perimeter of a triangle is 59 inches. the longest side is 11 inches longer than the medium side, and the medium side is 3 inches more than the shortest side. Find the length of each side.

    asked on May 4, 2010
  5. english

    what does these quote mean? 1.)"my life for itself and not for a spectacle" 2.)An institution is the lengthened shadow of a man. 3.) Life only avails, not the having lived. 4.) Insist on yourself; never imitate Thanks for your help!

    asked on January 4, 2009
  6. AP Chem

    CH3CH2NH2(aq) + H2O(l) CH3CH2NH3+(aq) + OH-(aq) Kb = 5.0e-4 Ethylamine, CH3CH2NH, a weak base reacts with water according to the equation above. A 50.0 mL sample of a ethylamine solution is found to have a pH of the solution 11.60. (a) Write the expression

    asked on April 23, 2013
  7. Math

    A theater group made appearances in two cities. The hotel charge before tax in the second city was $1000 higher than in the first. The tax in the first city was 4% , and the tax in the second city was 7% . The total hotel tax paid for the two cities was

    asked on April 1, 2013
  8. Math - Decimals

    Is 0.052 or 0.05 a bigger number?

    asked on June 5, 2013
  9. Math - Limits/Derivatives

    Suppose that for a company manufacturing calculators, the cost, revenue, and profit equations are given by C = 70,000 + 20x R = 300x - (x^2 / 20) P = R - C where production output in 1 week is x calculators. If production is increasing at a rate of 600

    asked on October 19, 2013
  10. chemistry

    23) The equilibrium constant for the gas phase reaction 2NH3 (g) N2 (g) + 3H2 (g) is Keq = 230 at 300 °C. At equilibrium, __________. A) reactants predominate B) products predominate C) only products are present D) roughly equal amounts of products and

    asked on November 18, 2010
  11. Algebra

    allan borrowed $6400 from his father to buy a car. he repaid him after 9 months with interest of 8% per year. find the total amount he repaid.

    asked on November 30, 2017
  12. math

    the longest straight line that can be drawn to connect two point on the circumference of a circle whose radius is 9 inches is A. 9 inches B. 18 inches C. 28.2743 D. 4.5 inches is the correct answer b?

    asked on August 3, 2018
  13. Calculus - Integrals

    The projected rate of increase in enrollment at a new college is estimated by dE/dt = 6,000(t+1)^-3/2 where E(t) is the projected enrollment in t years. If the enrollment is 3,000 now (t=0), find the projected enrollment 15 years from now.

    asked on November 21, 2013
  14. Math

    Sue decides to collect postcards. She starts her collection with seven cards. Every week, she buys three more cards to add to her collection. How many weeks will it take her to have more than 30 cards? 11 7 8 30 Can somone help me figure out the equation

    asked on September 7, 2018
  15. Math

    A boy is mowing a rectangular lawn 40ft long and 30ft wide. He has cut all of it except for a rectangle that is 20ft long and 15ft wide. What fractional part of the lawn remains uncut? I need helping figuring out how to solve this. My answer sheet says its

    asked on November 13, 2016
  16. Math

    A certain triangle has a perimeter of 3080 mi. The shortest side measures 71 mi less than the middle​ side, and the longest side measures 373 mi more than the middle side. Find the lengths of the three sides.

    asked on September 6, 2018
  17. Chemistry

    Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C? a. 8.4 x 10–2 mol L–1 b. 2.2 x 10–3 mol L–1 c. 6.3 x 10–2 mol

    asked on May 27, 2016
  18. 11th grade-Logs

    log x = 1/2 (log a + Log b - log c) express x in terms of a,b,and c.

    asked on December 21, 2009
  19. Chemistry

    1. A combination reaction may also be a displacement reaction. True or False 2. The combustion of an element is always a combination reaction. True or False For number 1, I first thought true, but then again, nothing is being displaced in a combination

    asked on November 19, 2014
  20. Calculus - Optimization

    A fence is to be built to enclose a rectangular area of 800 square feet. The fence along 3 sides is to be made of material $4 per foot. The material for the fourth side costs $12 per foot. Find the dimensions of the rectangle that will allow for the most

    asked on November 17, 2013

    Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 175 boxes, each box containing 30 keyboards. The quality control department at Bender Electronics first randomly selects one box from each

    asked on October 24, 2014
  22. english

    In the story told by Outa Karel in “The Little Red Tortoise,” why is the little red tortoise considered a dynamic character? Select all that apply. The Little Red Tortoise 1.He shows different emotions, from being brave to face the Blue One to being

    asked on June 10, 2020
  23. algebra 2

    write an explicit formula for the sequence of 1/2, 3/7, 1/3, 5/19, 3/14

    asked on April 30, 2012
  24. biology

    What must a phenylketonuria patient leave out of his or her diet? a specific amino acid all carbohydrates some specific carbohydrates all amino acids

    asked on January 8, 2020
  25. math

    i have four digits i am more than 2500 i am less than 3000 my hundred digits id 6 my tens digit is one less than my hundreds digit my unit digit is 0 what number am i?

    asked on February 7, 2017
  26. 11th grade physics

    A car slows down from +32 m/s to +8 m/s in 4s. Calculate the acceleration .

    asked on November 29, 2010
  27. physics

    A catapult launches a cat from ground level to a target located on the ground. The cat leaves the catapult moving at 100 km/h at an angle of 40º. a) What is the cat’s velocity half-way through the trajectory (size and direction)? b) What is the cat’s

    asked on June 18, 2019
  28. Physics

    A 72.0 kg swimmer jumps into the old swimming hole from a tree limb that is 4.00 m above the water. Part A- Use energy conservation to find his speed just as he hits the water if he just holds his nose and drops in. Part B- Use energy conservation to find

    asked on November 24, 2017
  29. Science

    What is the density of a book whose mass is 1,800 g and whose volume is 300 cm3? *My Answer*You want to identify the numbers first, density = mass ÷ volume. Which would give you, 1800g ÷ 300 cm³ = 6 g/cm³. *Cant Figure Out *What is the mass of a ball

    asked on September 29, 2017
  30. chemistry

    The equilibrium constant for the reaction Cu3(PO4)2(s) 3 Cu2+(aq) + 2 PO43–(aq) is K = 1.40 x 10–37. Suppose that a beaker is filled to 1 L with a solution containing [Cu2+] = [PO43–] = 10.0 nM, and 300.0 g Cu3(PO4)2 . Which of the following

    asked on June 7, 2016
  31. english

    II. By the end of Romeo and Juliet, Paris and Romeo, both of whom loved Juliet, are dead. The two characters, however, are very different. Write an essay comparing and contrasting the two men. The introduction of your essay should include an

    asked on March 14, 2016
  32. english

    In the Odyssey, which of Odysseus' traits allows him to triumph in the bow-and-arrow challenge that Penelope sets for her suitors? (1 point) his love for Penelope his loyalty to the gods **** his pride in his bow his skill as a marksman i think B

    asked on January 29, 2016
  33. Macroeconomics

    The money supply in Freedonia is $200 billion. Nominal GDP is $800 billion and real GDP is $400 billion. Assuming that velocity is stable, if real GDP grows by 10 percent this year, and if the money supply does not change this year, what is the change of

    asked on April 9, 2013

    A wet bar of soap slides freely down a ramp 12.0 m long, inclined at 74.0 degrees. How long (in seconds) does it take to reach the bottom? (Neglect friction.)

    asked on March 7, 2012
  35. Precalculus

    If sinx= -1/4 and x terminates in the third quadrant, find the exact value of sin2x My answer is sqrt-15/8

    asked on August 6, 2011
  36. math

    The points A (7,6) and B (2,1) are 3 units and 2 units respectively from the line L and are on the opposite sides of L. Find the coordinates of the point where the interval AB crosses the line L.

    asked on January 6, 2011
  37. Maths

    If g(x)>0 for all real values of x, which of the following could be function g? a) g(x)= x+1 b) g(x)=x-1 c) g(x)= x^2+1 d) g(x) = x^2-1 e) g(x) = x^3 + 1

    asked on July 12, 2010
  38. physics

    After landing safely on the target the cat tries another projectile apparatus. This time the cat is shot out of a cannon over a 30 m high wall. The cat is launched at an angle of 55º0 and can be assumed to be at ground level during launch. With what speed

    asked on June 18, 2019
  39. physics

    An object moves along a circular path with a constant speed, |⃗vo|. (Semi Circle with point A on one side point B on the other. Looks like a 90 degree angle with points A and B on either side of the hypotenuse.) The average acceleration in going from A

    asked on November 8, 2012
  40. math

    How can you use subtraction to complete an addition pattern? use this exercise as an example: 32, 39, 46, 53, 60, 67.

    asked on February 19, 2012
  41. chemistry

    Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) ¨ Ca(OH)2(s) In a particular experiment, a 2.00-g sample of CaO is reacted with excess water and 2.14 g of Ca(OH)2 is recovered. What is the percent

    asked on October 26, 2011
  42. chemistry

    how do i solve the following problem? Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300°C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of Disappearance of NO2 for this

    asked on November 17, 2010
  43. chemistry

    The two isotopes of uranium, 238U and 235U, can be separated by effusion of the corresponding UF6 gases. What is the ratio (in the form of a decimal) of the root-mean-square speed of 238UF to that of 235UF6 at constant temperature?

    asked on November 9, 2010
  44. Literature

    Please can you check my answer.. 13. According to Renaissance philosophy, commoners often represent A. reason. C. pride. B. love. D. appetite. I think it it... B. love. It that correct ?

    asked on January 18, 2010
  45. Physics

    If a projectile is fired straight up at a speed of 10 m/s, the total time to return to its starting position is about ? -Hfinal=hinitial+ vinitial*t -4.9t^2 0=0+10t-4.9t^2 when I solved for t I got .49t. Also, where did 4.9 come from? A man leans over the

    asked on September 9, 2007
  46. History

    What was the result of the passage of the Fourteenth Amendment? - Chinese immigration was suspended for 10 years. - All African Americans formally gained US citizenship. - A basic literacy test was required to become a US citizen. - Irish immigration

    asked on May 28, 2020
  47. history

    Which identifies the conflict that arose over rubber production in the Belgian Congo? The desire of the Congolese to keep control of their rubber production led to an international war between Belgium and the Congo. Global demand for rubber and a lust for

    asked on February 4, 2020
  48. biology

    Which statements accurately describe the electron transport chain? Select all that apply. a: It produces carbon dioxide. b: It produces oxygen. c: It produces water and a high amount of ATP. d: It uses electrons released from NADH and FADH2.

    asked on January 8, 2020
  49. biology

    When a biochemical reaction occurs, what is the chemical substance that results? catalyst reactant substrate product

    asked on January 8, 2020
  50. Chemistry

    How do we know when x is negligible when calculating equilibrium concentrations?

    asked on October 2, 2019
  51. physics

    ethys, one of Saturn's moons, travels in a circular orbit at a speed of 1.1x104 m/s. The mass of Saturn is 5.67x1026 kg. Calculate a) the orbital radius in kilometres.( i know how to do this part, the answer is 3.1x10^8 m) b) the orbital period in Earth

    asked on June 19, 2019
  52. Chemistry

    The temperature of a lead fishing weight rises from 26 C to 38 C as it absorbs 11.3 J of heat. What is the mass of the fishing weight in grams? ( The specific heat capacity of lead is 0.128 J /g C )

    asked on February 15, 2018
  53. Personal fitness

    There are three important benefits to the warm up session: (1 point) flexibility is increased, the muscle is pushed to its full potential, and the chance of dizziness or fainting caused by the pooling of blood in the extremities is reduced. aids in the

    asked on January 28, 2016
  54. Physics Part A HELP!!

    4.) In coming to a stop, a car leaves skid marks 80m long on the highway. Assuming a DEceleration of 7.00 m/s^2 (m/s/s), estimate the speed of the car just before breaking. 6.) A car traveling @ 90km/h strikes a tree. The front end of the car compresses

    asked on December 14, 2015
  55. Geometry

    In a garden, a birdbath 2ft 6 in. tall casts an 18-in. shadow at the same time an oak tree casts a 90-ft shadow. How tall is the oak tree?

    asked on April 14, 2014
  56. Calculus - Optimization

    A parcel delivery service a package only of the length plus girth (distance around) does not exceed 24 inches. A) Find the dimensions of a rectangular box with square ends that satisfies the delivery service's restriction and has a maximum volume. What is

    asked on November 16, 2013
  57. Algebra 2

    five chips numbered 1 through 5 are placed in a bag. A chip is drawn and replaced. Then a second chip is drawn. Find the probability that the first chip is even and the other one is odd.

    asked on May 30, 2012
  58. College Algebra

    Solve the problem. Jon has 1162 points in his math class. He must have 86% of the 1500 points possible by the end of the term to receive credit for the class. What is the minimum number of additional points he must earn by the end of the term to receive

    asked on February 10, 2012
  59. Chemistry

    I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And

    asked on April 6, 2011
  60. physics

    A meter stick is pivoted at its 50-cm mark but does not balance because of non-uniformities in its material that cause its center of gravity to be displaced from its geometrical center. However, when masses of 150 and 200 grams are placed at the 10-cm and

    asked on June 25, 2010
  61. Math

    Kaitlyn needs 3 pounds of fruit for a salad. She already has 3/4 pound of apples and 1/3 pound of grapes. What fruits Kalen can add she already has to make exactly 3 pounds of fruit. Choices are 2/3 1/8 3/4

    asked on December 19, 2017
  62. Physics

    A spring is 16.2 cm long when it is lying on a table. One end is then attached to a hook and the other end is pulled by a force that increases to 28.0 N , causing the spring to stretch to a length of 19.0 cm . Part A What is the force constant of this

    asked on November 24, 2017
  63. Chemistry

    1. The value of ΔH° for the reaction below is -6535 kJ. _________ kJ of heat are released in the combustion of 16.0 g C6H6 (l). 2C6H6 (l) + 15O2 (g) --> 12CO2 (g) + 6H20 (l) 3. Given the following reactions CaCO3 (s) --> CaO (s) + CO2 (g) ΔH = 178.1 kJ

    asked on October 31, 2017
  64. Chem

    An electrochemical cell based on the decomposition of H2O2 can be constructed based on the half-reactions in the table below. Half-Reaction | Standard Reduction Potential, E° H2O2+ 2e- => 2 OH- | 0.88 V O2+ 2 H2O + 2e- => H2O + 2 OH- | -0.15 V (d)

    asked on April 23, 2013

    Fats help maintain your cell membranes. (1 point) True False 12. Your body does not use energy when you sleep. (1 point) True False 13. People with anorexia nervosa eat large amounts of food and then purge. (1 point) True False 14. Your body image is the

    asked on December 5, 2012
  66. English-please help!

    It must be nice," she said. "It must be very nice. I wish women could do such things." "It ain't the right kind of a life for a woman. Her upper lip raised a little, showing her teeth. "How do you know? How can you tell?" she said. "I don't know, ma'am,"

    asked on February 21, 2012
  67. chemistry

    iron+sulphur together are a mixture of small grains yellow and dark grey.Its chemical symbol is 'Fe + S'.When it reacts with oxygen they create a new chemical substance; Iron Sulphide. What do you put for 'explain the reaction using the Big Idea of Energy?

    asked on April 10, 2011
  68. Science

    A person's height, eye color, and skin tone are all examples of?

    asked on March 4, 2011
  69. algebra

    A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution?

    asked on August 12, 2010
  70. History

    Why is the elasticity of the Constitution important to minority groups

    asked on May 29, 2020
  71. Math

    A student experiences difficulty with malfunctioning alarm clocks. Instead of using one alarm clock, he decides to use three. What is the probability that at least one alarm clock works correctly if each individual alarm clock has a 90% chance of working

    asked on October 28, 2019
  72. math

    the greatest common factor of 2x4x6x8x10 and 1x2x3x4x5 is A. 2 B. 4 C. 8 D. 120

    asked on September 1, 2018
  73. Chemistry

    Classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds. CO2, HCl, Al2S3, Cd, F2,Ag,O2,NaCl

    asked on July 18, 2017
  74. Math

    Have trouble with math mixtures problem!! AT a family reunion, the average age of all those present was 45 years. If the two oldest people, aged 86 and 84 years, had not been present, the average age would have been 41 years. How many peoeple were at the

    asked on October 27, 2016
  75. Calculus

    Given that the antiderivative of f(x) = e4x is F(x) = 1/4e^4x+C, evaluate the integral from 0 to 2 of e^4x, dx. e^8 1/4(1-e^8) 1/4(e^8-1) 1/4e^8 (MY ANNSWER)

    asked on March 15, 2016
  76. Alg

    describe the end behavior of the graph of the polynomial function. Then evaluate the !@#$%^&ntion for x=-4, -3, -2, -1, 0, 1, 2, 3, 4. I'm confused on this. Help.

    asked on June 12, 2015
  77. Geometry

    Quadrilateral GHIJ is a scale drawing of quadrilateral ABCD with a scale factor r. Describe the following statements as always true, sometimes true, or never true, and justify your answer. a. AB/GH = BC/HI b. perimeter (GHIJ) = r * perimeter (ABCD) c. Area

    asked on February 13, 2015
  78. Chemistry

    If 3.0 liters of oxygen gas react with excess carbon monoxide at STP, how many liters of carbon dioxide can be produced under the same conditions? 2 CO (g) + O2 (g) ---> 2 CO2 (g)

    asked on February 4, 2015
  79. Chemistry

    1. Write a balanced molecular equation for the reaction of solid AgNO3 with aqueous NaCl. Be sure to include the correct number of coefficients and the state of the species (aq, s, l or g). 2. Write the total ionic equation for this reaction, including all

    asked on November 26, 2014
  80. Chemistry

    Use standard enthalpies of formation to determine ΔHorxn for: 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l) Enter in kJ.

    asked on October 21, 2014
  81. Chem URGENT

    How much energy (in kilojoules) is released when 13.3g of steam at 114.5∘C is condensed to give liquid water at 67.0∘C? The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3 J/(K⋅mol) for the liquid and 33.6

    asked on June 17, 2014
  82. English

    This piece focuses on the increase use of smartphones of youths in South Korea. Should I reword that phrase?

    asked on May 14, 2014
  83. Chem

    Ca(s) + 2H+(aq) → Ca2+(aq) + H2(g) An experiment is performed to determine the volume of hydrogen gas produced when calcium reacts with excess HCl(aq) as represented by the net ionic equation above. A 0.0720 g sample of pure calcium and a solution of 1.0

    asked on April 23, 2013
  84. Calculus

    Calculate the area of the common interior of r = 2sin(theta) and r = 2cos(theta)

    asked on March 27, 2013
  85. math

    this was emily's full day yesterday: she spent 8 hours sleeping, 1 hour in the shower, 6 hours in class, 2 hours eating and snacking, 4 hours studying, and 3 hiurs watching tv. What percent of her day was spent studying.

    asked on March 6, 2013
  86. math

    a movie theater has 250 seats. One hundred tickets have been sold. What percent of fhe theater is filled?

    asked on March 6, 2013
  87. chem

    calculate the pH of 5x10^-2 M of benzoic acid with pKa= 4.19

    asked on September 14, 2012
  88. Bio HELP!!!!

    what is the name of the process throughh which polypeptides, polysaccharides or triglycerides are catabolised (broken down)?

    asked on July 7, 2012
  89. Physical Science

    The conversion of water to ice is considered a physical change, whereas the conversion of iron to rust is considered a chemical change. Why?

    asked on April 19, 2012
  90. Chemistry

    What amount of hydrogen peroxide should result when 1.21 g of barium peroxide is treated with 25.1 mL of hydrochloric acid solution containing 0.0289 g of HCl per mL?

    asked on February 29, 2012
  91. Statistics

    Problem 1. Three supermarket chains in the Denver area each claim to have the lowest overall prices. As part of an investigative study on supermarket advertising, the Denver Daily News conducted a study. First, a random sample of nine grocery items was

    asked on February 25, 2012
  92. College algebra

    use interval notation to express the solution set of the inequality |2x + 3|> or equal to 9

    asked on February 1, 2012
  93. english

    Which element of a short story would be most important to a story about a mad scientist stealing a secret weapon?

    asked on April 6, 2011
  94. Chemistry

    I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And

    asked on April 6, 2011
  95. physics

    at what altitude should a satellite be placed into circular orbit so that its orbital period is 48 hours? the mass of the earth is 5.976x10^24 kg and the radius of the eatrh is 6.378x10^6 m.

    asked on March 23, 2011
  96. Chemistry

    How many moles of HCl are present in a 50mL 3M solution of HCl?

    asked on January 12, 2011
  97. chemistry

    how do i solve the following problem? Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300°C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of Disappearance of NO2 for this

    asked on November 17, 2010
  98. english

    How is "The Handsomest Drowned Man in the World" an example of the author using social realism?

    asked on September 21, 2010
  99. English Help

    R for run on sentence, CS for comma splice, F for fragment, and C for correct sentence. Some correct sentences can be punctuated more effectively, however. Check over my anwers if i get it wrong please correct me. Thanks! 1. Carlos took the job and he was

    asked on November 8, 2009
  100. Economics

    Utilizing market demand and market supply curves for spaghetti, help me illustrate the effect on equilibrium price and quantity of spaghetti for: Increased worldwide demand for rice leads to an increase in the price of ride (which many see as an alt to

    asked on February 11, 2007


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