Questions Asked on
December 2, 2011

  1. math

    The price of a hair clip is .75 cents. The sales tax is 0.04 of the purchase price. How much is the sales tax on the hair clip?

    asked by eric
  2. chemistry

    If a 0.10 M solution of silver fluoride, AgF, is mixed with a 0.10 M solution of barium acetate, Ba(C2H3O2)2, a pecipitate (ppt.) forms: AgF + Ba(C2H3O2)2--> ppt. In order to identify the precipitating ions, you conduct some experimental tests. a) what is

    asked by Colby
  3. math

    The price of a hair clip is .75 cents. The sales tax is 0.04 of the purchase price. How much is the sales tax on the hair clip?

    asked by eric
  4. psychology

    Critical thinking requires you to: A) Accept the simple answer and not make it complicated. B)tolerate uncertainty, even if you fell pressure to come up with an answer. C)decide it is either this or that and don't get hung up on dreaming. D) trust the

    asked by pam
  5. geometry

    Write and solve an equation to answer the question. Round your answer to the nearest tenth of a percent, if necessary. 140 towns is what percent of 1940 towns

    asked by kim
  6. Physics Honors

    A baseball player leads off the game and hits a long home run. The ball leaves the bat at an angle of 30 degrees from the horizontal with a velocity of 40 m/s. How far will it travel in the air?

    asked by Jacqueline
  7. Physics Honors

    A golfer is teeing off on a 170 m long par 3 hole. The ball leaves with a velocity of 40 m/s at 50 degrees to the horizontal. Assuming that she hits the ball on a direct path to the hole, how far from the hole will the ball land (no bounces or rolls)?

    asked by Jacqueline
  8. Algebra

    If a car is driven 145 miles, how much would it cost to rent?c = 15.00 + 0.15m .>>How many miles can you drive if you only have $60 left to rent a car?

    asked by JERSEYGIRL
  9. Algebra

    If a car is driven 145 miles, how much would it cost to rent?c = 15.00 + 0.15m .>>How many miles can you drive if you only have $60 left to rent a car?

    asked by JERSEYGIRL
  10. Physics Honors

    A punter in a football game kicks a ball from the goal line at 60° from the horizontal at 25 m/s. What is the hang time of the punt?

    asked by Jacqueline
  11. physics

    The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the

    asked by chase stocker
  12. Physics Honors

    A punter in a football game kicks a ball from the goal line at 60° from the horizontal at 25 m/s. How far down field does the ball land?

    asked by Jacqueline
  13. Physics Honors

    A cannon fires a cannonball 500 m downrange when sest at a 45° angle. At what velocity does the cannonball leave the cannon?

    asked by Jacqueline
  14. Psychology Please Help!

    Important positive events such as a birthday party for a child, graduating from high school, getting married, or anticipating a first grandchild: a. are reinvigorating, but not stressful. b. help relax the body and balance against life's stressors. c. can

    asked by Anonymous
  15. math

    make up a set of at least twelve numbers that has the following landmarks. minimum:50 median:54 maximum:57 mode:56

    asked by jimmy
  16. Physics Honors

    A lovesick lad wants to throw a bag of candy and love notes into the open window of his girlfriend's bedroom 10 m above. Assuming it just reaches the window, he throws the love gifts at 60° to the ground: a) At what velocity should he throw the bag? b)

    asked by Jacqueline
  17. ALGEBRA

    what's the percent increase in the sales from 2.08 million to 16.3 million? HELP!!!!!SOS

    asked by JERSEYGIRL
  18. PSYCHOLOGY HELP PLEASE!!

    Todd said to his wife, "Honey, you know how we have always wanted to be in business for ourselves? Well, today I did it! I have rented a 3,000 square foot business, hired six employees, ordered office furniture; we are in business." During the first three

    asked by Anonymous
  19. PSYCHOLOGY HELP PLEASE!!

    "It all happened for the best," "I would never have left that dreadful job if they had not laid me off," and "Yes, I miss mom's home cooking, but I am going to school and building my future." These are examples of: a. avoidant coping. b. problem-focused

    asked by Anonymous
  20. chemistry

    Calculate the concentration in molarity of sugar in a solution made by dissolving 0.34 moles of dextrose (C6H12O6) in enough water to make 3.00 Liters of solution

    asked by Seep
  21. algebra

    7. A closed economy is described by the following simple IS-LM system: C = a + b(1 – t)Y – dR I = I G = G L = kY – hR

    asked by Matrices
  22. math

    five times the sum of a number and four into math expression

    asked by mekala
  23. chemistry

    If an aqueous solution is 1.54 % by weight in sodium chloride and contains 6.96 g of sodium chloride, what mass of water is present in the solution?

    asked by Seep
  24. Calculus

    definite Integrals (using fundamental Theorem) Evaluate from -1 to 2(x^2 - 4x)dx

    asked by Stacy
  25. chemistry

    How many moles of dextrose (C6H12O6) are in 264mL of solution with a concentratino of 0.78M?

    asked by Seep
  26. chemistry

    What mass in grams of dextrose (C6H12O6) will be required to produce 6.00 L of a 0.15M aqueous solution? Question 5 answers

    asked by Seep
  27. Chemistry

    if antiseptic hydrogen peroxide is 3% H2O2 by mass, approximately how many moles of H2O2 are present in each gram of antiseptic solution? you can assume the solution has the same density as water. show your calculations.

    asked by Ivy
  28. psychology

    the fundamental idea behind natural selection is that, within a particular environment, a genetically influenced trait tends to be more successful and thus able to survive and be passed on. Environmental psychologists examine the ________ that led to

    asked by pam
  29. statistics

    Consider a sample mean (xbar) of 46 caluclated from a sample of size 35 drawn from a population of over 1000. Would it be appropriate to use the standard score table to look up the probability of a z score calculated on these data? Why or why not?

    asked by Kim
  30. help

    the half-life of a radium is 1690 years is 90 grams is present now, how much will be present in 70 years

    asked by Anonymous
  31. Geometry

    the number of sides in 2 regular polygons is in the ratio 5:4 an the difference between their angles is 9^o. Find the number of sides in the polygon

    asked by HELP!!! URGENT
  32. Geometry

    the number of sides in 2 regular polygons is in the ratio 5:4 an the difference between their angles is 9^o. Find the number of sides in the polygon

    asked by HELP!!! URGENT
  33. chem

    why do we use a weak acid or water and not a concentrated acid with NaBh4,etoh reagent?

    asked by tim
  34. calculus

    Find the area S of the regions y= square root (x) =x/3 x=25

    asked by Anonymous
  35. calculus

    Find the area S of the regions y= square root (x) =x/3 x=25

    asked by Anonymous
  36. calculus

    COS^6

    asked by Anonymous
  37. Chemistry

    If performing a potentiometric halide titration with Ag+: 1. Is siver nitrate a primary standard? Explain. 2. What is the purpose of using a bisulfate buffer? 3. Have 1.0000 grams of unknown, containing .3000g KCl and .7000g KI. You dissolve in 100 mL of

    asked by Ken
  38. TRIGO HELP!!! NEEDED NOW

    sec^4x - sec^2x = tan^4x + tan^2x

    asked by NEED HELP NOWW!!
  39. algebra

    please help me write a complete algebraic solution thanks problem 18. mike, alex, olivia ran for the office of president of their senior class . of the 400 votes cast, olivia received 38% of the votes and michael received 116 votes. A. What % of the votes

    asked by ann
  40. math

    a rectangle has a length that is four more than three times the width. If the perimeter is 126 feet, find the length and the width

    asked by susie
  41. science-biology

    A family member recently found out her child's blood group was AB+ yet hers is O+. i'm suppose to explain this oddity but i don't know how? so please help me!!! thanks

    asked by lenny
  42. science-biology

    A family member recently found out her child's blood group was AB+ yet hers is O+. i'm suppose to explain this oddity but i don't know how? so please help me!!! thanks

    asked by lenny
  43. Algebra 2

    How would you graphy this question and also solve for the intercepts: y=2(x-3)^2-1

    asked by Erin
  44. sociology

    From a functionalist perspective, how has human behavior and our way of life contributed to environmental problems? So far I have the premise that functionalist examine the entire system itself. Human activities have become a dominant influence on the

    asked by nameless
  45. biology!!

    why do Mountain dwellers have higher averages of hemoglobin than people living in coastal areas?

    asked by lenny
  46. maths

    Given that the equation of the hyperbola is 9x(squared)-4y(squared)=36. (i)Find the centre and vertices (ii)Find the foci and eccentricity (iii)find the equation of the asymptotes

    asked by ceasar
  47. Calculus

    Find the degree 3 Taylor polynomial T3(x) of the function f(x)=(−3x+33)^4/3 at a=2.

    asked by Web10
  48. English

    Hello. I will be grateful if you help me with the article: "EU finance ministers have finished a/the(?)discussion about the possibility of providing more loans to Greece." Thank you very much for help.

    asked by Ilma
  49. physics

    A neighbor pushes a lawn mower on a lawn that is level with a force of 230 Newtons. If 45% of this force is directed downward, how much work is done by the neighbor in pushing the mower 8 meters?

    asked by roshna
  50. Maths

    The differencein the measures of 2 complementary angles is 18.Find the measures of angles.

    asked by anonymus
  51. science

    Describe clearly how the body physiological mechanism aids in arresting haemorrhage during damage to blood vessels?

    asked by Makinin
  52. Maths

    Among the 2 supplementary angles the measure of the largeer angle is 36 more than measure of the smaller one.Find their measures.

    asked by anonymus
  53. math

    a rectangular garden is to be fenced along four sides and in the middle it is to be divided into 2 equal areas.if 300meters of fencing materials is available, find the maximum possible area that can be fenced.

    asked by Anonymous
  54. math

    in march, the savings of oliver, asia, hassan, and abby was $1440. in april, their savings became equaly when oliver's savings is doubled, asia's savings is decreased by $30, abby's savings is increased by $46, and hassan remained the same. find the total

    asked by Anonymous
  55. Science

    What is the gravity at the height of 15000 km above the earth surface

    asked by Ruchee Thapa
  56. Psychology Please Help!

    Dr. Kyle shared the newspaper clipping with his class. "This is an unusual case, but I believe the punishment phase of the trial would have been different in another state. The crime was committed, but the defendant is not in touch with reality most of the

    asked by Anonymous
  57. math

    mary's age is (2\3) that of peter's .two years ago mary's age was (1\2) of what peter's age will be in 5 years time .how old is peter now?

    asked by ibrahim
  58. english

    the book asks for the vowels circle the vowel spellings Does this mean the vowels? coin = oi please = eae

    asked by daniel's mom
  59. algebra

    Please rewrite the following equation so that y is a function of x. 3x+18y=36 thanks for your help.

    asked by ann
  60. Physics

    A merry-go-round is a common piece of playground equipment. A 2.4 m diameter merry-go-round with a mass of 300 kg is spinning at 22 rpm. John runs tangent to the merry-go-round at 5.0 m/s, in the same direction that it is turning, and jumps onto the outer

    asked by Danny
  61. psychology

    the fundamental idea behind natural selection is that, within a particular environment, a genetically influenced trait tends to be more successful and thus able to survive and be passed on. Environmental psychologists examine the ________ that led to

    asked by lane
  62. Algebra 2

    How would you find the x intercepts of 2x^2+17=0. The original equation is 2(x-3)^2-1.

    asked by Ana
  63. economics

    In 1 or 2 sentences, describe how money that you save in the bank can be channeled to an investor.

    asked by tonya mcdonald
  64. physics

    A wheel of mass 0.47 kg and radius 49 cm is spinning with an angular velocity of 24 rad/s. You then push your hand against the edge of the wheel, exerting a force F on the wheel as shown in the figure below. If the wheel comes to a stop after traveling 1/4

    asked by samiyah
  65. trig

    How to prove the theorem of sines, using S=(a*b/2) * sin γ ?

    asked by Evelina
  66. physics

    A spaceship of mass m travels from the Earth to the Moon along a line that passes through the center of the Earth and the center of the Moon. (a) At what distance from the center of the Earth is the force due to the Earth three times the magnitude of the

    asked by Bob
  67. eth

    what is a global organization?

    asked by at
  68. college physics

    I don't know where to begin with this question. Could someone help me please? A rod of mass 4.1 kg and length 1.6 m hangs from a hinge as shown in the figure below. The end of the rod is then given a "kick" so that it is moving at a speed of 5 m/s. How

    asked by peter
  69. physics

    Think about the analogy "full of hot air." If a person were to inhale 2.2 L of gas at a temperature of 18 °C and that air heats to a temperature of 38 °C inside the lungs, what would be the new volume of the gas? Round to the nearest hundredth. Don't

    asked by clueless
  70. physics

    Think about the analogy "full of hot air." If a person were to inhale 2.2 L of gas at a temperature of 18 °C and that air heats to a temperature of 38 °C inside the lungs, what would be the new volume of the gas? Round to the nearest hundredth. Don't

    asked by clueless
  71. Calculus

    Revolve the region bounded by y=x and y=x^2 about the y axis. In cubic units, the resulting volume is?

    asked by Beth
  72. Calculus

    Find the colume, in cubis units, generated by revolving the region bounded by y=x^3 x=0 and y=8 around the line x=7

    asked by Beth
  73. physics

    A 3.5 kg mass sits at rest on a rough surface. The surface has the following coefficients of friction: µs = 0.53 and µk = 0.21. Determine the required force to start the object moving?

    asked by Bolke
  74. English

    I need help with my Juggling topic.I got 6/20 and I want to get the full 20 points! Thanks!Such as thesis, Introduction. Thesis: The purpose of my speech is to inform my audience about my experience with juggling; more specifically how I became involved

    asked by Saahre
  75. Chemistry

    You have 11.20 grams of compound. It is known that the compound has a half-life of 3.8 days. HOw long will it take for the compound to decay to 0.350 grams?

    asked by Missy
  76. psychology

    the fundamental idea behind natural selection is that, within a particular environment, a genetically influenced trait tends to be more successful and thus able to survive and be passed on. Environmental psychologists examine the ________ that led to

    asked by lane
  77. calculus

    Your manufacturing costs are C(x)= -.0001x2+25x+1200 and the demand for X units of a certain commodity is p(x) =55 – x/1000. What is your maximum revenue and maximum profit?

    asked by Anonymous
  78. physics

    Why standing waves are called standing?

    asked by ravi
  79. Algebra

    Explain what happens to the graph y=4^x if you change it to 4^(x+3)+ 2 would it move 3 units to the right and 2 units upward-I'm thinking becaue youi're adding to the x??

    asked by Jonathan
  80. chemistry

    If 215.0 mL of water are added to a 237 mL sample of a 1.702 M dextrose solution, what is the new molarity of dextrose in the resulting solution?

    asked by B
  81. physics

    A hockey player shoots a puck, exerting a constant force of 30.0 N on the hockey puck for 0.16 seconds. What is the magnitude of the impulse given to the puck? 190 kg ∙ m/s 98 kg ∙ m/s 9.6 kg ∙ m/s 4.8 kg ∙ m/s

    asked by Brittany
  82. math

    A baseball player hits a bakk that has the path of a parabola. It is at its highest point at second base which is 127 ft. from home plate. How far is the outfielder who catches the ball?

    asked by Eric
  83. math

    A carpebter is making a brace in the shape of a right triangle. The hyp. is 41 inches long. The longer leg will be 31 inches longer than the shorter leg. Write a quadriatic equation that models the situation.

    asked by Eric
  84. math

    convert the given angle measure into degrees and decimal fractions of a degree. 112degree 20' 54"

    asked by tamy
  85. chemistry lab

    Explain how the differences in the solubility products of AgI and AgCl make this experiment possible. Include in your discussion a narrative of what is happening to the electrode potentials and the I-, Cl-, and Ag+ ions.

    asked by margaret
  86. math

    Kate and John both are 100 m far away from each other. They both are 1.5 m tall. They flagpole are somewhere between them. Kate looking up the flagpole at the angle of elevation of 25 degree while John looking at 60 degree. How far the flagpole they both

    asked by Anonymous
  87. math

    A secretary can type 8 pages per hour.There are a total of 96 pages to type. How many pages remain to be typed after 6 hours?

    asked by John
  88. Fracking/Economics

    I am having hard time getting information on fracking's effects upon the economy. help please and thank you!

    asked by Lesli
  89. Health Sciences

    How could you relate work of podiatrist with speech and language therapist and occupational therapist? They are three different professions but the question asks about how they work together as a team

    asked by Viola
  90. stats

    using a calculator need p value on a r tailed test if the n=9 and the t is 3.204

    asked by James
  91. Math

    A gas expands against a constant external pressure of 1.7 bar until its volume has increased from 5.4 L to 8.9 L. During this process it absorbs 640.0 J of heat from the surroundings. Calculate the energy change of the gas.

    asked by Lauren
  92. Chemistry

    The enthalpy of dissociation for hydrogen H2(g) → 2 H(g) is ΔH = 436.0 kJ/mol. What is the difference between the bond enthalpy (ΔH) and bond energy (ΔE) for this process under standard conditions at 298.15 K?

    asked by LaurenB
  93. ThermoChemistry

    When 19 mL of water at 22 C is combined with 18 mL of water at 64 C, what is the final temperature of the water?. The specific heat of water is 4.184 J/g/K and its density is 1.0 g/mL.

    asked by LaurenB
  94. ThermoChemistry

    If 18 g of Kr initially at 0.5 bar and 18 L is brought to 0.49 bar and 5L, what is the overall change in enthalpy of this process? Assume that Kr is an ideal gas.

    asked by LaurenB
  95. ThermoChemistry

    Calculate the final temperature of solution when 10 g of oxalic acid, (COOH)2(s), is dissolved in 110.0 mL of water that is initially at 26 C. The enthalpies of formation of oxalic acid in the solid and aqueous phases are -826.8 and -818.8 kJ/mol,

    asked by LaurenB
  96. Thermochemistry

    A sample of liquid mercury (mass 58 g and temperature 149.0 C) is poured into 79 g of H2O at 19 C. Calculate the final temperature of the mixture, assuming no heat is lost. The heat capacities of Hg and H2O are 27.98 and 75.33 J/mol/K, respectively.

    asked by LaurenB
  97. Thermochemistry

    If a chalice made of pure gold weighing 1.24 kg and initially at 15 C is filled with 100.0 mL of water at 89 C, what is the final equilibrium temperature of the system? The heat capacities of water and gold are 75.29 and 25.42 J/mol/K, respectively.

    asked by LaurenB
  98. physics

    A 1.83×103 kg car accelerates uniformly from rest to 10.7 m/s in 3.44 s. a) What is the work done on the car in this time interval? Answer in units of J

    asked by ch
  99. chemistry

    The Ksp for silver sulfate (Ag2SO4) is 1.2 10-5. Calculate the solubility of silver sulfate in each of the following. A)water B)0.14 M AgNO3 C)0.33 M K2SO4 the answer in mol/L

    asked by melissa
  100. chemistry

    Calculate the pH of each of the following solutions. (a) 0.300 M propanoic acid (HC3H5O2, Ka = 1.3 10-5) (b) 0.300 M sodium propanoate (NaC3H5O2) (c) pure H2O (d) 0.300 M HC3H5O2 and 0.300 M NaC3H5O2

    asked by melissa
  101. math

    At the beginning at a walk, Alex and Beth are 2.2 miles apart. If they leave at the same time and walk in the same direction, Alex overtakes Beth in 11 hours. If they walk towards each other, they meet in 1 hour. What are there speeds? Alex? mph Beth? mph

    asked by mandy
  102. Statistics

    What is the confidence interval for c= 0.95 x = 5.3, s = 0.5 , and n =53

    asked by Dee
  103. statistics

    A POLL OF 1300 RANDOMLY SELECTED STUDENTS IN GRADES 6 THROUGH-8 WAS CONDUCTED AND FOUND THAT 54% ENJOY PLAYING SPORTS. WOULD CONFIDENCE IN THE RESULTS INCREASE IF THE SAMPLE SIZE WERE 3000 INSTEAD OF 1300? WHY OR WHY NOT?

    asked by CHARLOTTE JAMES
  104. statistics

    A POLL OF 1300 RANDOMLY SELECTED STUDENTS IN GRADES 6 THROUGH-8 WAS CONDUCTED AND FOUND THAT 54% ENJOY PLAYING SPORTS. WOULD CONFIDENCE IN THE RESULTS INCREASE IF THE SAMPLE SIZE WERE 3000 INSTEAD OF 1300? WHY OR WHY NOT?

    asked by CHARLOTTE JAMES
  105. statistics

    A POLL OF 1300 RANDOMLY SELECTED STUDENTS IN GRADES 6 THROUGH-8 WAS CONDUCTED AND FOUND THAT 54% ENJOY PLAYING SPORTS. WOULD CONFIDENCE IN THE RESULTS INCREASE IF THE SAMPLE SIZE WERE 3000 INSTEAD OF 1300? WHY OR WHY NOT?

    asked by CHARLOTTE JAMES
  106. Algebra

    I am using a TI-83 calculator to find all the solutions to the quadratic equation (5x(Squared) - 80 = 0)by graphing. The answer is supposed to be (-4 and 4) but the calculator comes up with (ERR: NO SIGN CHNG). Can you tell me what I'm doing wrong?

    asked by Deanna
  107. physics

    A light ray travels from water to air. If the ray strikes the water/air boundary at an angle of incidence of 46 degrees, what is the angle of refractiob in air? (n water = 1.33)

    asked by Josh
  108. physics

    Light shines through a single slit whose width is 1.12 mm. A diffraction pattern is formed on a screen located 4.0 m away. The distance between the middle central bright fringe and the second dark fringe is 4.0 mm. What is the wavelength of the light?

    asked by Josh
  109. physics

    A 5 meter diameter telescope is used to observe binary star systems. What is the minimum separation distance (perpendicular to the line of sight) for which the two stars can be resolved if they are at a distance of 1,000 light years = 10 m and they are

    asked by Josh
  110. Physics

    A 4.4 kg block is pushed along the ceiling with a constant applied force of 89 N that acts at an angle of 55.0° with the horizontal, as in Figure 4-33. The block accelerates to the right at 6.00 m/s2. Determine the coefficient of kinetic friction between

    asked by Kashawn
  111. physics

    A convex mirror has a focal length of 15 cm. A 3.0 cm high object is located 10 cm in front of this mirror. Where is the image located?

    asked by Josh
  112. statistics

    Among the four northwestern states, Washington has 51% of the total population, Oregon has 30%, Idaho has 11%, and Montana has 8%. A market researcher selects a sample of 1000 subjects, with 450 in Washington, 340 in Oregon, 150 in Idaho, and 60 in

    asked by marc
  113. Confidentiality in Allied Health Part 1

    The term challenge for cause refers to a a.request to dismiss a juror because of possible bias. b.procedure questioned during the discovery stage. c.judge's decision to subpoena a witness. d.plaintiff's dispute regarding a physician's malpractice.

    asked by Anonymous
  114. math

    factor the common factor from the expression x^1/3;x^10/3+x^1/3

    asked by lainie
  115. Math

    Can someone help me with these questions? 1.What are the maximum and minimum values for Y=28(1.21)^x on the interval 0

    asked by Jay
  116. physical science

    On the surface of the moon, where the acceleration due to gravity is about one-sixth that of Earth, a 100-kg astronaut would have a mass of_____ and a weight of _____ A. 100kg, 1000N B. 16.6kg, 166N C. 100kg, 166N D. 600kg, 1000N

    asked by anonymous
  117. Chemistry

    C2H6 --> 2CH3 at a temperature where the half-life is 21 minutes. If the initial concentration is 8.0 mM, what would the concentration be after 46.0 minutes? How long would it take to convert 95% of C2H6 at this temperature?

    asked by Rachel
  118. physics

    a body is launched up on a rough inclined plane making an angle of 30 degrees with yhe horizontal . obtain the coefficient of friction between body and the plane if the time of ascent is half of the time of descent

    asked by Anonymous
  119. Physics

    A small disk of radius R1 is mounted coaxially with a larger disk of radius R2. The disks are securely fastened to each other and the combination is free to rotate on a fixed axle that is perpendicular to a horizontal frictionless table top. The rotational

    asked by John
  120. Thermochemistry

    Compute the change in temperature when 1.1 g of sodium chloride is dissolved in 200.0 mL of water initially at 28 C. The heat capacity of water is 4.184 J/mL/K. Neglect the heat capacity of the NaCl. Species ΔfH (kJ/mol) NaCl(aq)-407.3 NaCl(s) -411.2

    asked by LaurenB
  121. Chemistry

    Calculate the volume of natural gas (methane) required to bring 3.9 L of water to a boil. Assume the initial temperature of the water is 39 C, and the methane is at 1 bar and 25 C. Assume that methane is an ideal gas, the specific heat capacity of water to

    asked by LaurenB
  122. Chemistry

    A 1.2 g sample of C-5 H-10 O is burned completely in excess oxygen to yield CO2(g) and H2O(l) at 25 C, releasing 43.52 kJ of energy. What is the enthalpy of formation of C-5 H-10 O?

    asked by LaurenB
  123. Learning

    I have to write a few paragraphs on the changes in the skills (both positive and negative) that enhance learning. Now, I wrote a good bit on the positive changes such as improvement in the IT skills, communication, time management etc but what could be the

    asked by Caroline
  124. math

    20. A scale drawing of a town park has a scale of 5 in : 100 ft. What is the actual length of each foot in the drawing? (1 point)

    asked by lala
  125. Journalism

    Could you please quick revise this? Does the senior/freshman after IU need to be capitalized? Ex: said IU freshman Avery Walts. said IU Freshman Avery Walts. Which one of these is correct? Taking the First Step By:Bryce and Katlyn They call it “the good

    asked by Bryce
  126. Algebra

    Can someone work this out for me? I'm so confused! Solve the system by using substitution. y + 6x = 11 3x + 2y = -5

    asked by Bryce
  127. English

    I urgently need you to check the following sentences. Thank you. 1) The dominant themes in Shakespeare's Macbeth are as follows. (I don't think " as follows" is correct because it should be followed by a colon) 2) The regicide brings about chaos. Actually,

    asked by Henry2
  128. Chemistry

    A decomposition reaction has a rate constant of 0.0019 yr -1. ( a) What is the half-life of the reaction? ______ yr (b) How long does it take for [reactant] to reach 12.5% of its original value? ______ yr

    asked by Sam
  129. physics

    A small airplane with a wingspan of 13.5 m is flying due north at a speed of 70.8 m/s over a region where the vertical component of the Earth's magnetic field is 1.20 µT downward. (a) What potential difference is developed between the airplane's wingtips?

    asked by Charles
  130. statistics

    If a population has a standard deviation ó of 25 units, what is the standard error of the mean if samples of size 100 are selected?

    asked by dee
  131. PHYSICSI

    The rotating loop in an AC generator is a square 11.0 cm on a side. It is rotated at 60.0 Hz in a uniform field of 0.800 T. Calculate the following quantities as functions of time t, where t is in seconds. (a) the flux through the loop mT·m2 (b) the emf

    asked by Charles
  132. English

    Thank you very much. Here are a few other sentences I'm doubtful about. 1)The universal order was conceived like a chain of beig/as a chain of being/in the form of a chain of being. Which ones are possible? 2) Man/or men had the unique function of joining

    asked by Henry2
  133. american literature

    Can anyone check my research paper and tell me what i did worng and how i can improve it?

    asked by cesar
  134. algebra

    write the equation in standard form y=9x+1/2

    asked by lorena
  135. Agrebrla

    Triangle XYZ has angles measurements are in the ratio 1:3:5. What is the measurement of the largest angle?

    asked by Anonymous
  136. HTML

    How do I change the color of the button after a button is pressed in html.

    asked by Mike
  137. algebra

    How do I graph the function f(x)+1/4x+4?

    asked by anna
  138. calculus

    Find an antiderivative G of g(x)=1/x^4

    asked by sue
  139. statistics

    2. Transform the following numeric data concerning client ages into categories of young (under 40), middle-aged (40 to 60), and older (over 60). Put your answers in the Category column of the table below: Client Age Category Lois 46 Gene 53 Evelyn 36

    asked by neete
  140. org chem

    Using reagents no more than four carbons long, propose a synthesis of (1R,2S,4R,5S)-1,2,4,5-tetramethylcyclohexane and (1S,2R, 4R, 5S)-1,2,4,5-tetramethylcyclohexane. Would like a way to start this...

    asked by lori
  141. statistics

    If a population has a standard deviation ó of 25 units, what is the standard error of the mean if samples of size 100 are selected?

    asked by deandra
  142. education

    Do you thinkthe special need student should be exempt from taking the graduation test?

    asked by Shron
  143. short story paper

    hi is anyone here? Wanted to try out a topic

    asked by laura
  144. Chemistry

    Which is a polar covalent bond? PbCl2 or CS2?

    asked by Lisa
  145. English

    Well in english we have to write an essay which deals with dramatic irony between two stories. The stories are One thousand dollars and by the waters of babylon. WEll my teacher said to make it a compare and contrast essay and im not sure how to find the

    asked by Keirstan
  146. math

    PV/T=pv/t. solve for P

    asked by lainie
  147. logic

    Truth tables can determine which of the following?

    asked by me
  148. history

    In the Battle of _______, a disastrous charge against forces holding Cemetery Ridge led to Confederate defeat. A. Cold Harbor B. Vicksburg [C. Gettysburg ] D. Antietam is my answer correct

    asked by jake
  149. Algebra

    *correction of previous post* Find the LCD of the rational expressions in the list. m-2/m^2+2m , -8/m^2+6m+8

    asked by kai
  150. chemistry

    calculate the PH during the titration of 50.00 ml of 0.300 M HNO3 with 0.600 M KOH after 0, 15.50, 25.00, and 40.00 ml of KOH have been added. Graph the titration curve

    asked by saud
  151. calculus

    Find an antiderivative P(t) of p(t)=t^7-(t^5/5)-t

    asked by boe
  152. Question (this is important)

    Ok my friend told me about John Hopkins Talent Search (for gr 7th and 8th) and like you take sat's and stuff. She said that I can't do it because this is for honor students only which is unfair. I don't believe her so I'm asking you guys is she is right. I

    asked by Laruen
  153. chemistry

    calculate the PH during the titration of 50.00 ml of 0.300 M HNO3 with 0.600 M KOH after 0, 15.50, 25.00, and 40.00 ml of KOH have been added. Graph the titration curve. Ph=

    asked by saud
  154. calculus

    find an antiderivative P of p(s)=2sin(2s)

    asked by boe
  155. calculus

    find an antiderivative F(x) of f(x)=11x-sqrt(x)

    asked by barb
  156. history

    Which of the following is associated with the development of chain stores? [ A. F. W. Woolworth ] B. Marshall Field C. R. H. Macy D. John Wanamaker is my answer correct

    asked by jake
  157. MTH209

    What are the advantages/disadvantages to using this site as a study tool for mathematics?

    asked by tangela
  158. history

    If you were one of the new immigrants who arrived in America in the 1880s, it's most likely that you would have been [ A. Irish and Protestant. ] B. German and Lutheran. C. Swedish and Protestant. D. Italian and Catholic. is my answer correct

    asked by jake
  159. Chemistry

    20 degrees C is 6 g Cu So4/25 g H2O is this saturated or unsaturated?

    asked by Tammy
  160. history

    The Wade-Davis Bill passed by Congress, then vetoed by Lincoln, stipulated that _______ percent of voters in a Confederate state must take an oath of future loyalty to the Union before a process of restoration could begin. A. 20 B. 10 C. 70 [D. 50] is my

    asked by jake
  161. logic

    Choose the pair of words/phrases among the choices that exhibits the same logical relationship as the words/phrases in the following pair. building : blueprint (Points : 1) ship : sea cake : recipe bridge : island guitar : song

    asked by Nadne
  162. logic

    Arthur: The solutions to most mystery novels I read are not believable. However, my enjoyment of a mystery novel depends only on its suspenseful mood and colorful characters. Norton: Roughly 80% of the mystery novels I read have believable solutions, which

    asked by Nadne
  163. Math

    Sam and Nora leave their business office at the same time. Sam drives north at 53 km/h, Nora drives south at 47 km/h. How long until they are 50 km apart?

    asked by Nick
  164. SAT's and ACT's

    How to pass the SAT's and ACT'S for the John Hopkins Talent Search? Here are the grade chart. Awards Ceremony Eligibility Chart (valid for students who tested by June 30, 2011) SAT Grade 7 Math >=550 or Critical Reading >=550 ACT Grade 7 Math >=21 or

    asked by Laruen
  165. logic

    a survey of 10 film historians, half voted for Nosferatu as the greatest vampire film ever made, and the other half voted for Dracula. However, when asked which lead vampire character they considered more charismatic, all of the film critics chose Dracula

    asked by Nadne
  166. logic

    Some drugs combat obesity or alcohol addiction by turning off pleasure centers in the brain. However, if the dosage is too high, there’s a risk that people taking them will be plunged into depression. The statements above, if true, support which one of

    asked by Nadne
  167. socials

    i have to encapsulate 3 or 4 of canadas foreign polices of the decades of the 1960's and have to have thesis statement and all has to be in pictures/drawings that represent evidence that prove my thesis. teacher show us examples and posters were all

    asked by Mohammad
  168. organic chemistry

    Give the product of the structure formed when 2-methyl-2-butene reacts with bromine in water

    asked by Mary
  169. physics

    a block off wood (density = 0.5 g/cm^3) is floating in oil (density = 0.75 g/cm^3). The mass of the wood is 1500 g. Determine the volume of the oil displaced

    asked by steph
  170. ENG 101

    Im taking my first college class in ENG 101 and i need to write an persuasive essay and Im having a hard time. I was wondering if anyone can help me come up with an outline or what I reasons that I can provide and I can come up with minor details. Here is

    asked by Jillian
  171. history

    Which of the following statements about John D. Rockefeller is most accurate? A. He founded the Standard Oil Company when he was 24 years old. [B. He considered competition to be the central ideal of capitalism.] C. He invented the concept of vertical

    asked by jake
  172. physics

    water moving in a horizontal pipe has a velocity of 9 m/s when the radius of the pipe os 0.025m. Determine the velocity of the water when it enters a wider section of the pipe and the radius is 0.075m.

    asked by steph
  173. physics

    Calculate the period of a ball tied to a string of length 1.2 m making 5 revolutions every second. Answer in units of s

    asked by k.t.
  174. history

    Which of the following statements about the provisions of the Compromise of 1850 is true? [ A. Fugitive slaves were denied any and all constitutional rights.] B. The New Mexico Territory was absorbed into Texas. C. The principle of popular sovereignty was

    asked by jake
  175. math

    Christine went shopping and bought each of her eight nephews a gift., either a video costing $14.95 or a cd costing $16.88. She spent $127.32 on the gifts. How many videos and how many cds did she buy?

    asked by mandy
  176. math

    IF a plane can travel 500 miles per hour with the wind and 420 miles per hour against the wind, find the speed of the plane in still air.

    asked by mandy
  177. Chem

    @20 degree solubility-22g Cu SO4/100g H2O @ 20 degree C is 6g Cu SO4/25 g H2O saturated?

    asked by Tammy
  178. Biology

    List and define the five characteristics that ALL living things share

    asked by Anonymous
  179. Biology

    Using the fundamentals of thermodynamics, explain why we must continue to eat in order to maintain homeostasis?

    asked by Seth
  180. Chemistry 111

    1. In the balanced oxidation-reduction reaction (occurring in acidic condition) the coefficients before H+ and Zn2+ are ____ and ____, respectively? Zn + NO3¯ → NH4+ + Zn2+ (unbalanced) A. 4, 2 B. 4, 1 C. 6, 1 D. 10, 4 E. 12, 2

    asked by Danielle
  181. Biology

    Explain what happens during each of the three steps of cellular respiration and explain why a lack of oxygen is such a severe problem to the process.

    asked by Seth
  182. Physics

    An ideal monatomic gas expands isothermally from 0.590 m3 to 1.25 m3 at a constant temperature of 670 K. If the initial pressure is 8.00 104 Pa. (a) Find the work done on the gas. Answer is in J (b) Find the thermal energy transfer Q. Answer is in J

    asked by Allie
  183. Physics

    Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, and the body can produce as much as 1.3 kg of sweat per hour. If sweating were the only heat dissipation

    asked by Allie
  184. Physics

    Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, what efficiency is

    asked by Allie
  185. Math

    PV/T=pv/t. solve for P

    asked by lainie
  186. algebra

    please write algebraic equation and solve thanks length of movie projected at 24 frames per second ; length(L)=24 f. solve for f

    asked by ann
  187. Chemistry

    A 4.00 L solution of KOH is prepared by diuling 400.0 m 0f 0.290 M KOH with warer [OH-]=

    asked by saud
  188. algebra

    solve inequalite place in interval notation 4-x/x-6

    asked by ddd
  189. Calculus

    If f(x) = (cos x)(esin x ), then, correct to the nearest hundredth, f '(2.0) = The answers suppose to be 0.86 but i always get -1.83

    asked by Beth
  190. Calculus

    Find the volume, in cubic units, generated by revolving the region bounded by y = x3 , x = 0, and y = 8, around the line x = 7 .

    asked by Beth
  191. Chemistry

    Testing for water hardness using EDTA as a titrant: Suggest a reason why the buffer is good for only a week. The buffer contains disodiumEDTAdihydrate, MgSO47H20 and distilled water. NH4Cl and NH4OH is also added then diluted. I know that after a week, the

    asked by Ken
  192. philosophy

    Why does Hobbes think that it is necessary for persons to transfer nearly all of their rights to the sovereign rather than merely some of their rights?

    asked by mas
  193. Math check

    2[3(8-2 2)-6] my answer is 204 and btw it's not 22 it 2 power of 2 . Plz check it

    asked by Madad
  194. chemistry

    calculate the volume of 0.050 acetic acid needed to prepare 4.0 L of aceic acid solution with a PH of 3.80 L=

    asked by saud
  195. English 12

    Can someone look over my essay please. Tell me anything that needs changing. Any feedback would be great. Give suggestions if you have any I would really appreciate it. ps: I know it's long: 1,301 words Ernest Hemingway Ernest Hemingway was a great writer

    asked by NeedHelp
  196. math

    s=16t^2

    asked by mandy
  197. economics

    A company is planning to invest $75,000 (before taxes) in a personnel training program. The $75000 outlay will be charged off as an expense by the firm this year (Year 0). The returns estimated from the program in the forms of greater productivity and less

    asked by Diane
  198. 6.29

    Beast estimate of 6.2992 would be 4 or 8. I was doing a question an answer is 6.29 but there is no 6.29 in option and they ate asking best estimate.

    asked by Madad
  199. spanish

    1.Voy a nadar en la piscina. Necesito . 2.Está lloviendo mucho. Necesito . 3.No puedo ver bien porque hace sol. Necesito . 4.Voy a correr por el parque. Necesito . 5.Queremos entrar en muchas tiendas diferentes. Vamos al . 6.No tengo dinero en la cartera.

    asked by Anonymous
  200. Chemistry balancing equations

    Translate each of the following reactions into complete balanced chemical equations using international symbols & include states of matter at SATP. Assume pure states of matter unless otherwise indicated. I really need help with this stuff please. 1. The

    asked by Fizzylicous
  201. Chemical Equations

    Starting with nitrogen and hydrogen, millions of kilograms of ammonia are produced every year for use as a fertilizer. Use this info to answer the next 3 questions. Communicate the balanced chemical equation using molecular models. Communicate the balanced

    asked by Fizzylicous
  202. algebra

    please help solve the percent equation for b. thanks

    asked by ann
  203. chemestry

    What volume will 300 ML of gas at 20 degrees C and a pressure of 335 mm Hg occupy if the temperature is reduced to -80 degrees C and the pressure increased to 760 mm Hg?

    asked by laquanda
  204. Math equation

    why is the line x=4 is a vertical line.

    asked by Lavern
  205. chemistry!!

    Compute the amount of heat released (absolute value) when 1.1 kg of liquid ethanol is burned in excess oxygen to make carbon dioxide and liquid water

    asked by Randolph
  206. Precalculus

    A builder has 600 feet of fencing to enclose three adjacent rectangular partioned areas. Find the largest possible enclosed area of the partioned areas.

    asked by John