Questions Asked on
February 17, 2011

  1. Chemistry

    So I have had several homework problem like this and managed to solve them easily, but these two problems I cannot get the correct answer for. Using a Table of thermodynamic data, calculate the change in Gibbs free energy for each of the following

    asked by Don
  2. thinking outside of the box

    one taxi company charges 75 cents for the first quarter mile and 15 cents for each additional mile the competing taxi company charges 1.00 for the first quarter mile and 10 each additional mile what distance would produce the same fare for the two taxi

    asked by eva
  3. History

    Which city-state was better: Sparta or Athens

    asked by Angie
  4. english

    What can hold six gallons of water, be found in a survival kit, and be the size of my foot? (I wear a size 6 to 7.5 in shoes)

    asked by Stephanie
  5. math

    if a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t)=-0.8t^2-10t+330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground?

    asked by Toya
  6. science

    if i had mixture of sodium carbonate and sand, and spilled some sodium carbonate (no sand spilled) after weighing the mixture, would the spill affect the percentage of sand or sodium carbonate when we calculate it?

    asked by chriss
  7. AN UNCERTAIN HORIZON

    Under Franklin Roosevelt's Good Neighbor policy, A. Cordell Hull favored continued military interventions in Latin America. B. American commerce with Latin America increased, but only slightly. C. the Platt Amendment was rescinded. D. the collective

    asked by Anonymous
  8. Chemistry

    determine the mass of sodium chloride produced when chlorine reacts with 0.29 g of sodium iodine in a single replacement reaction

    asked by Alicia
  9. math

    2x+1y=64

    asked by ryan
  10. Chemistry

    determine the mass of sodium chloride produced when chlorine reacts with 0.29 g of sodium iodine in a single replacement reaction

    asked by Alicia
  11. math

    Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions. x^2=3x-6

    asked by sarah
  12. algebra

    . If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle

    asked by Carly
  13. physics

    A mass of 8.10 kg is suspended from a 1.69 m long string. It revolves in a horizontal circle as shown in the figure. The tangential speed of the mass is 2.92 m/s. Calculate the angle between the string and the vertical.

    asked by Sarah
  14. Physics

    A group of Mechanical Engineering students are attempting to pull a large crate of mass M=175.0kg on a level driveway. The coefficient of static friction ms = 0.610. They use a rope of dubious quality to pull the crate as indicated in the figure. At what

    asked by Sarah
  15. Chemistry

    how many liters of oxygen are necessary for the combustion of 425 g methane assuming the reaction takes place at STP

    asked by Alicia
  16. Physics

    Three masses, M1= 4.1 kg, M2= 4.1 kg, and M3= 6.7 kg are made of the same material. They are on a horizontal surface and connected by massless strings. The system accelerates to the right at 2.47 m/s2 due to an external force F pulling on M3. Given that T1

    asked by Sarah
  17. Physics

    A cube of mass M=0.703 kg is placed on an incline and given a push. It slides down, and its speed down the incline is measured at two positions, [1] and [2] on the diagram below, with V1 = 0.923 m/s and V2 = 1.207 m/s. Note that the incline passes through

    asked by Sarah
  18. science check plzzzzzzzzzz

    if your computer uses 2.5A at 120V, how much will it cost to use the computer for 4 hours a day, seven days a week for two weeks? assume that the cost of electricity is $0.09 for every kWh*h of energy. i solved it like this way could you check of i got it

    asked by kim
  19. math

    Convert 0.925 g/l to mg/100ml?

    asked by ivy
  20. business communication

    principles of designing visual aids for business report.

    asked by sihle mathenjwa
  21. Science

    Can flying fish communicate and if so,how?

    asked by Inna
  22. science

    Need to prepare a lab that requires 1000ml of 1.0M HCl. You find some 3 M HCl to work with. What do you need and how would you work it out?

    asked by clair
  23. advance algebra

    1(2)+2(3)+3(4)+...+n(n+1)= n(n+1)(n+2)/2 using the mathematical induction. please help..

    asked by A-A
  24. advance algebra

    2(2^1) +3(2^2) + 4(2^3)+...+n^3 = [n(n+1)/2]^2 using the mathematical induction please help!

    asked by A-A
  25. geometry

    Two rectangular boxes are similar. One box has the length of 24 inches. and a width of 9 inches. If the other box has a length of 16 inches., what is its width?

    asked by Destiny
  26. physics

    A cart of mass m = 0.84 kg on a track undergoes a collision with another cart. It's velocity before and after the collision, vi and vf is measured and found to be vi = 1.32±0.04 m/s and vf = 0.30±0.04 m/s. If the collision lasts a time interval Δt =

    asked by charisse
  27. physics

    A cart of mass m = 0.84 kg on a track undergoes a collision with another cart. It's velocity before and after the collision, vi and vf is measured and found to be vi = 1.32±0.04 m/s and vf = 0.30±0.04 m/s. If the collision lasts a time interval Δt =

    asked by charisse
  28. trig

    A BILLBOARD PAINTER HAS BEEN ASSIGNED THE TASK OF CHANGING THE ADVERTISMENT ON A 20-FT BILLBOARD,THE BOTTOM OF WHICH IS 15FT OFF THE GROUND.AFTER EXAMINING THE SITE, SHE IDENTIFIES TWO AREAS ON THE GROUNG UNDER THE SIGN THAT ARE STURDY ENOUGH TO SUPPORT

    asked by Anonymous
  29. calculus

    in a time of t seconds, a particle moves a distance pf s meters from it's starting point, where s=3t^2 Find the ave velocity between t =1 and t=1+h if.... a) h=.1 b)h+.01 c)h=.001 Which approximation is closest to the EXACT derivative at ...t=1? Estimate

    asked by anthony
  30. business communication

    information that should be excluded from c.v. When u applying to company

    asked by sihle mathenjwa
  31. communication

    question to ask yourself in dertemining wheather or not a message is ethical

    asked by sihle mathenjwa
  32. ALGEBRA

    FROM THE TOP OF A VERTICAL CLIFF 200M SEA LEVEL A BOAT WAS SIGHTED AT ANGLE OF 26CELSIUS ?

    asked by ROWA
  33. ALGEBRA

    A)HOW FAR IS THEBOAT FROM THE BASE OF THE CLIFF? B) IF AFTER 10MIN THE BOAT HAS SAILED 1KM AWAY FROM THE CLIFF WHAT IS THE NEW ANGLE OF DEPRESSION OF THE BOAT ? C) HOW FAR IS THE BOAT FROM THE BASE OF THE CLIFF AFTER 45MIN?

    asked by ROWA
  34. physics

    A 150 kg safe on frictionless casters is to be raised with 1.2 meters off the ground to the bed of a truck. Planks 4m long are available for the safe to be rolled along. How much force is needed to push the safe up the truck?

    asked by roxy
  35. English

    "Write a creative description of a journey you have taken. Focus on the means of transportation and the nuances in particular to that way of travel. Select 10 words from the speeling list to use in your piece of writing and write in the space provided on

    asked by Shivi
  36. Discrete Math

    f: A→B, g :B→A Is g ° f defined? If so, what is its domain and range? Any suggestions?

    asked by Francesca
  37. physics

    there is any peak shift between bulk and nano materials in xrd.

    asked by pradee
  38. maths

    what is the negative numbers in context

    asked by chloe mcp
  39. algebra please help

    If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle

    asked by Carly
  40. math

    I do not know how to answer this question. Would someone please help me with each of the four question below? Thank you. Question 1. Write the sample space for the outcomes of tossing three coins using H for heads and T for tails. Question 2. What is the

    asked by Dave
  41. Physics

    A cube of mass M=0.703 kg is placed on an incline and given a push. It slides down, and its speed down the incline is measured at two positions, [1] and [2] on the diagram below, with V1 = 0.923 m/s and V2 = 1.207 m/s. Note that the incline passes through

    asked by Sarah
  42. English

    Can you please check these sentences I am not sure of. Thank you. 1)The play opens with a meeting of the three witches in some sort of deserted place. The stage is empty: there are no trees, no houses,no people, absolutely nothing. 2) Shakespeare has

    asked by Mike
  43. English

    I forgot to include these very few lines. Thank you very much for helping me. 1) Anyone who doesn't know the difference between opposites must be associated with evil. 2) We undestand that the witches have the power of knowing something about the future

    asked by Mike
  44. sociology 1010

    folkways,cores, and taboos are all norms, yet they vary in importance?

    asked by carolyn
  45. socioloty 1010

    the notion of social evolution served the interests of European powers as they expanded their colonial empires?

    asked by carolyn
  46. Chemistry-help needed

    Can we use an AR grade chemical for UV spectrometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?

    asked by candy
  47. maths(algebra)

    can u plz solve ma algebric equation: 3x-4/2=3(x-3)-2 i shall be very thankful to you

    asked by qasim
  48. math

    What is the meaning of angle of depression and angle of elevation?

    asked by Natasha
  49. physics

    Stand on a 200 meter high building and, at noon, drop a ball. At what time does it hit the ground

    asked by R
  50. English

    How would I do a web diagram on the following sentence for adjectives? My eleven brothers received an abundant supply of food.

    asked by Cindy
  51. History

    What caused the US to enter the Spanish American War and WWI?

    asked by Sarah
  52. Human Resource Management

    What are the seven major decision points involved in job analysis of HR selection purposes? How do you conduct a job analysis for a team job in which the team member is asked to play multiple roles, be cross-trained, and perform different tasks based upon

    asked by Laura
  53. physics

    In zero-gravity astronaut training and equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. As shown in the figure, the aircraft climbs from 24,000 ft to 32000 ft, where it enters the zero-g parabola with a velocity of 158 m/s at

    asked by kia
  54. physics

    A man lifts a 3.1 kg stone vertically with his hand at a constant velocity of 2.1 m/s. What is the magnitude of the total force of the man's hand on the stone?

    asked by melad
  55. physics

    A Coast Guard cutter detects an unidentified ship at a distance of 16.7 km in the direction 13.8° east of north. The ship is traveling at 24.9 km/h on a course at 39.2° east of north. The Coast Guard wishes to send a speedboat to intercept the vessel and

    asked by kia
  56. physics

    A barge is hauled along a straight-line section of canal by two horses harnessed to tow ropes and walking along the tow paths on either side of the canal. Each horse pulls with a force of 700 N at an angle of 10° with the centerline of the canal. What is

    asked by mayrel
  57. Office Management

    One taxicab charges 75 cents for the first quarter-mile and 15 cents for each additional mile. The competing taxi company charges $1.00 for the first quarter-mile and 10 cents for each additional mile. 1. what distance would produce the same fare for the

    asked by sandra
  58. physics

    A large wooden crate is pushed along a smooth, frictionless surface by a force of 87 N. The acceleration of the crate is measured to be 2.0 m/s2. What is the mass of the crate?

    asked by mayrel
  59. physics

    At what altitude above the Earth's surface would your weight be two-thirds of what it is at the Earth's surface? (Assume Re = 6.371 103 km.)

    asked by melad
  60. physics

    A 10.0-kg block is at rest on a horizontal floor. If you push horizontally on the 10.0-kg block with a force of 20.0 N, it just starts to move. (a) What is the coefficient of static friction? b) A 12.0-kg block is stacked on top of the 10.0-kg block. What

    asked by melad
  61. physics

    A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.41. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the

    asked by melad
  62. physics

    A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 21° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 8.3 N, what is the tension in the rope?

    asked by mayrel
  63. physics

    The drawing below shows an elastic cord attached to two back teeth and stretched across a front tooth. The purpose of this arrangement is to apply a force to the front tooth. (The figure has been simplified by running the cord straight from the front tooth

    asked by mayrel
  64. chemistry

    400 cm3 of 0.5mol/dm3 hydrochloric acid was reacted with 5g of magnesium oxide. Calculate the mass of reacted oxide? Show the steps and thq..

    asked by vigor
  65. physics

    A pulley is attached to the ceiling (as shown in the figure below). Spring scale A is attached to the wall and a rope runs horizontally from it and over the pulley. The same rope is then attached to spring scale B. On the other side of scale B hangs an W =

    asked by mayrel
  66. physics

    Two boxes with different masses M1 = 1.1 kg and M2 = 3.0 kg are tied together on a frictionless ramp surface which makes an angle θ = 27° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? What is the

    asked by melad
  67. physics

    A 125.0-N sign is suspended from a horizontal strut of negligible weight. The force exerted on the strut by the wall is horizontal. Draw an FBD to show the forces acting on the strut. (Do this on paper. Your instructor may ask you to turn in this work.)

    asked by melad
  68. physics

    While trying to decide where to hang a framed picture, you press it against the wall to keep it from falling. The picture weights 9.5 N and you press against the frame with a force of 19 N at an angle of 30° from the vertical. What is the coefficient of

    asked by mayrel
  69. phys

    To totally convert a given amount of mechanical energy into heat is Choose one answer. a. impossible. b. possible. c. impossible to answer without additional information.

    asked by Anonymous
  70. physics

    A crate of oranges weighing 164 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.30 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.6 m/s a)

    asked by melad
  71. physics

    box full of books rests on a wooden floor. The normal force the floor exerts on the box is 235 N. a) You push horizontally on the box with a force of 121 N, but it refuses to budge. What can you say about the coefficient of static friction between the box

    asked by mayrel
  72. Algebra

    What are the solutions of the quadratic equation below? 4x2 - 30x + 45 = 0

    asked by Jay
  73. geometry

    In the figure below, AC = 2. What does BD equal?

    asked by Anonymous
  74. physics

    A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 12.0 m/s. The student throws a ball into the air along a path that he judges to make an initial angle of 60.0° with the horizontal and

    asked by kia
  75. clothing and textiles

    what are the three types of pleats

    asked by Desira Joseph
  76. Physics

    Is it true that a drop of water can pass through a solid travelling by 1800m/s2?

    asked by Tobersheer
  77. math

    whats the formula for finding the radius when givin the circumference?

    asked by danny
  78. histroy

    describe several factors that caused the public to feel demoralized during the late 1800

    asked by Yolanda
  79. IMPERIALISM AND THE PROGRESSIVE ERA

    2. _______ pioneered the field of corporate public relations. A. Henry Ford B. Ivy. K. Lee C. Margaret Robins D. Samuel Gompers

    asked by Anonymous
  80. physics

    A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain

    asked by kia
  81. chemistry

    A sample of 0.50 moles of gas is placed in a container of volume of 2.5 L. What is the pressure of the gas in torr if the gas is at 25 degrees C ? Show work ?

    asked by Cat
  82. world history

    some parts of spain remained under muslim control for how many years

    asked by robert
  83. sceience

    diffence between dipole interactions and vanderwaal forces

    asked by mel
  84. Chemistry

    A sample of gas is placed in a container at 25 degrees C and 2 atm of pressure. If the temperature is raised to 50 degrees C, what is the new pressure?

    asked by Cat
  85. Geography

    Why is there 12 hours of daylight all year at Quito? I think it's because it's on the equator, but I don't really get it

    asked by Sara
  86. math

    Find the exact area of a circle having the given circumference What formual would i use for that?

    asked by danny
  87. calculus

    Consider f(x)=3*2^x find the rate of change between X=1 and X=4

    asked by Sarah
  88. Maths

    Hi I am really sorry I now people have already attempted to help me with this one already, however I am still not able to understand, I really have not done a lot of these equations and am struggling. I have put a little more information down this time,

    asked by Claire
  89. physics

    A 6.15 kg block slides 1.49 m down a frictionless incline that makes an angle of 60.0° with the horizontal. What is the total work done on the block

    asked by devin
  90. human services

    I need help finding information that are facts instead of opinions on: How can diet and exercise stop the biologically driven aging process?

    asked by Patiance
  91. algebra

    multiply and simplify 5a^7. 6q^5 4q^2 25a

    asked by pat
  92. algebra

    factor 1 36x^12 40x^8

    asked by pat
  93. sciencce

    Mrs. Scheib was riding her bike and leaves home and rides due east for a distance of 45 km. she returns home on the same bike path. if the entire bike path takes 4 hrs what is her average speed? Is it 11.25?

    asked by anon
  94. college algebra

    would this be foil method? If so how do I solve. x-1 x-5 = x+3 x+4

    asked by dot
  95. math

    find the area of kite whose unequal sides are 15 cm and 20 cm respectively and the angle between the two unequal side is a right angle.

    asked by arindom
  96. spanish

    do any of these words have accents? (if so please identify them): - abrigo - rapido - sabado - vez - menu - operacion - impermeable - ademas - regatear - antipatico - farmacia - esqui - pension - pais - perdon

    asked by melissa
  97. physics

    As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically,

    asked by kia
  98. chemistry

    Theres suppose to be something wrong with the formula, but i don't know what it is. Help? (NH4)3Cl2

    asked by christa
  99. math

    Find the added expense and the actual yearly rate of interest for the following. A food processor for $119.50 cash, or $5.00 down and $9.00 per month for 15 months.

    asked by floyd
  100. calculus

    Please help me? ln(x+1)-ln(x-2)=ln(5) 1. Solve equation by setting up algebraically. 2. Use appropriate properties of Logarithm to reduce the number of logarithmic terms to only one. 3. Solve logarithmic equation.

    asked by Sherry
  101. Chemistry

    F2 (g) 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

    asked by Michael
  102. Chemistry

    What is the pressure in a 2.00 L container which holds 0.100 mol of methane and and 0.200 mol of carbon dioxide at standard temperature?

    asked by Paul
  103. Physics

    A 200-g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.250 s. If the total energy of the system is 2.00 J, find (a) The force constant of the spring and (b) The amplitude of the motion.

    asked by Ray
  104. calculus

    Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19

    asked by maggie
  105. calculus

    Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19

    asked by maggie
  106. English-Please Help?

    John Updike's short story entitled "Son" covers four generations, correct-great grandfather, grandfather, father and son, correct? I dogpiled this and can't find anything on it. If anyone can direct me paragraph- by paragraph who is being spoken about, I'd

    asked by Jillian
  107. Personal Finance

    From the throne room in your base station on Alpha Centauri-in the video game Galactic Empire-you dispatch your loyal, obedient minions to use their diligence and skill to loot the universe on your behalf and return with the treasure for its accounting and

    asked by Marie
  108. chemistry

    Consider the combustion reaction: C3H8 (g) + 5 O2(g) ---> 3 CO2(g) + 4H2O(g), where triangle symbol H= - 531 kcal/mol. If 6.70 x 10 to the 4th kcal of energy is released in the reaction, How many grams of oxygen were consumed

    asked by sukanya
  109. Chemistry

    The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O HNO2 + OH¯ ?

    asked by Thomas
  110. physics

    A student throws a ball vertically upward such that it travels 7.5 to its maximum height.If the ball is caught at the initial height 2.3 after being thrown, what is the ball’s average speed? What is the ball’s average velocity?

    asked by Anonymous
  111. biochem

    If I am given a solid chemical form of both the acid and the base, how do I determine how many grams of each I need to make 1L of a 25mM Tris-HCl buffer with acid concentration of 18.94mM, and base concentration of 6.06mM?

    asked by Jenny
  112. geometry

    Right triangle ABC is similar to triangle XYZ, because angle B is congruent to angle Y. If side AB equals 15 inches, side BC equals 45 inches, and side YZ equals 9 inches, then what is the length of side XY?

    asked by lane
  113. Physics

    On vacation, your 1200- car pulls a 540- trailer away from a stoplight with an acceleration of 1.50. What is the net force exerted by the car on the trailer?

    asked by Ashley
  114. english

    what is the tone and diction in the poem Tableau by countee cullen

    asked by lilly
  115. English

    Thank you very much for the help! Here is the rephrase I found in the sparknotes. 1) Shakespeare has unhooked his work from time and place. The witches tell us that the next time they meet, it will be with Macbeth, and that this will occur before the sun

    asked by Mike
  116. English

    I forgot to include these last sentences. Thank you. 1)He wishes himself death, but he cannot tolerate the world’s going out (on?) without him. 8) His egotism leads him finally to self-destruction. 2) He uses four metaphors to describe life: a walking

    asked by Mike
  117. Geography

    What happens to temperature and precipitation as one moves inland and away from water bodies? I know that land heats and cools faster than water bodies.

    asked by Sara
  118. math

    why did they try to build a house on orgo's head?

    asked by lala
  119. chemistry HELP PLEASE

    write the formulas of the complex ion formed between a) the ligand, Cl-, and the platinum(II) ion with a coordination number of four. b) the ligand, NH3, and the nickel(II( ion with a coordination number of six. c)the ligand, ethylenediamine, and the

    asked by sue
  120. Chemistry-pls help

    Can we use an AR grade chemical for UV spectrophotometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?

    asked by candy
  121. spanish

    objeto indirecto Modelo ¿Puedes traerme tu plato? No, no te lo puedo traer. ¿Quieres mostrarle la carta? Sí, voy a mostrár la ahora. ¿Les serviste la carne? No, no la serví. ¿Vas a leerle el menú? No, no lo voy a leer. ¿Cuándo vas a prepararnos

    asked by Cassie
  122. A&P

    Situation: You need to step up on a step to reach an object on a high shelf over your head. Your starting point should be anatomical position and your finishing point should be the position you are in once your hand has reached the object overhead. (Part

    asked by Kristy
  123. 7th grade math worksheet

    Need help on how to actually do the rise/run and equations to figure out the anxwer to "What do you call a duck that steals?" worksheet. I can find the answer on your websight, but I need to show my work for numbers 1-6 using rise/run and numbers 7-18

    asked by Adam
  124. math

    The distance between (0,0) and (0,1) on a certain coordinate plane is 1cm. The distance between (0,0)and (1,0) on that same coordinate plane is 1cm. What is the distance between (0,0) and (1,1). Explain the answer

    asked by stacy
  125. nutrition

    Could someone direct me to some websites that list the nutritional needs for men and women? Thanks

    asked by net
  126. Business

    what are the atributes of tomorrow's leaders according to linda hill?

    asked by Ben
  127. Calculus

    Find the equation of the plane through (1,2,-2) that contains the line x = 2t, y = 3 - t, z = 1 +3t

    asked by Phil
  128. calculus

    How do I set-up/solve this problem? Please help me. The half-life of the radioactive isotope gallium-70 is 20 minutes. If the initial amount of gallium-70 is 25 milligrams, when will 10 milligrams be left?

    asked by Melody
  129. chemistry

    A solution is made by dissolving 46.5g of urea, (CH4N2O) a nonelectrolyte, in 316g of water. Calculate the vapour pressure of this solution at 40 oC. (ans in torr, note the vapour pressure of pure water at 40 oC is 55.3 torr.) I have been struggling with

    asked by wini
  130. Math

    Three(cylindrical) steel drums are put together and a steel band is wrapped tightly around the three drums. If the radius of each drum is 2 feet, what is the length of the steel band? (The view of the drums below is from the top, or end of the drums.) The

    asked by Megan
  131. spanish

    Ricardo y Tomás son los menos aburre (the least boring) de la fiesta. Mi profesor de biología es (the oldest) de la universidad. i got part of them right. like the first one would be menos que... and would second one be el mayor?

    asked by Cassie
  132. math

    13 1/3 divide by 6 2/9 = 40/3 x9/56 ANSWER IS 2 1/7

    asked by Junior
  133. 8th grade science

    Why can high blood viscosity have negative effects? Also, name the medical condition that people can develop with high blood viscosity.

    asked by stacy
  134. physics

    The mass of a robot is 5470 kg. This robot weighs 3740 N more on planet A than it does on planet B. Both planets have the same radius of 1.33 107 m. What is the difference MA - MB in the masses of these planets?

    asked by dyer
  135. trig

    From two points each on the opposite sides of a river,the angles of elevations of the top of an 80ft. tree are 60 degree & 30 degree.the points & the tree are in the same straight line,which is perpendicular to the river.how wide is the river?

    asked by Sandy
  136. Chemistry

    A student finds that 1.00 g of a monoprotic acid, HA , requires 50.0 ml of 0.100 M KOH to neutralize it. What is the molar mass of the acid?

    asked by Patrick
  137. math

    Evaluate 15 X 4 2/3

    asked by Junior
  138. Chemistry

    a 265 ml flask contains pure helium at a pressure of 756 torr. A second flask with a volume of 460 ml contains pure argon at a pressure of713 torr

    asked by FSU
  139. Chemistry

    what two molecules (separately) can be catalyzed with HCL to get 1 Chloro-1 Methylcyclohexane?

    asked by Judy
  140. Chemistry

    Homework due tomorrow by 5pm - Asks; what can be catalyzed with Br (subscript 2) and result in 1,2 dibromo 3-methylbutane?

    asked by Judy
  141. Algebra

    I'm factoring special cases and i cant figure this problem out: 45t^2-72t+24 please help

    asked by Lauren
  142. chemistry

    write the formulas of the complex ion formed between a) the ligand, Cl-, and the platinum(II) ion with a coordination number of four. b) the ligand, NH3, and the nickel(II( ion with a coordination number of six. c)the ligand, ethylenediamine, and the

    asked by sue
  143. physics

    A)If a freight train can accelerate at 0.050 m/sec^2, how far must it travel to increase its speed from 2.0 to 8.0 m/sec? B) how long will it take the train to accomplish this?

    asked by MLB
  144. Chemistry

    Three double bonds in Cyclohexene (CH subscript 3) 3 (another subscript) CCl with AlCl (subscript 3) as a catalyst results in what? Then, that added with HNo (subscript 3) and sulfuric acid as a catalyst becomes one minor and one major result. What are

    asked by Judy
  145. Chemistry II class

    Homework due tomorrow. I have no tutor but need answers! Cyclohexene with CH3 subscript again 3 bwecomes something Then that added to HNO (subscript 3) becomes somethings (minor/major) those added to SO (subsript 4) with Sulfuric acid as a catalyst become

    asked by Judy
  146. physics

    A)If a freight train can accelerate at 0.050 m/sec^2, how far must it travel to increase its speed from 2.0 to 8.0 m/sec? B) how long will it take the train to accomplish this?

    asked by MLB
  147. math

    In the trapezoid above, base R is 16 units and base S is 24 units. The trapezoid has a height of 9 units. What is the area of the trapezoid?

    asked by sue
  148. Probability & Stats

    what is the probability that no two students will have the same birth date in a size of 60 class

    asked by Apple
  149. chemistry

    Given: v with a power of 1 is 50 Ml and t with a power of 1 is 30 degrees c. what is the volume with a power of two when T with a power of 2 is 20 degrees C

    asked by Liz
  150. Biomechanics

    If John was pushing a 300 kg desk across the floor with a constant acceleration of 3.5 m/s squared, how much force would he have to apply to the desk to maintain the acceleration, considering the coefficient of kinetic friction is 0.60?

    asked by Jennifer
  151. physics

    A circular wire coil consists of 100 turns and is wound tightly around a very long iron cylinder with a radius of 2.5 cm and a relative permeability of 2200. The loop has a current of 7.5A in it. Determine the magnetic field strength produced by the coil

    asked by Isabell
  152. Chemistry

    when 6 M NaOH is slowly added to a solution containing chromium (III) ion, a precipate forms. However when an excess of 6 M NaOH is added, the precipated dissolves forming a complex ion with a coordination number of four. 1) write the formula of the

    asked by lillian
  153. physics

    If four containers, 10ml to 50ml,have the same temperature, which has the greatest thermal energy?

    asked by Anonymous
  154. math

    you gave this answer toa problem If you received a $10 reward, then you spent between $50 and $99.99 If you received a $20 reward, then you could have spent $100, $125, or $149.99. If your purchase is $98, then you'd be better off spending $2 more, so that

    asked by anonymus
  155. English

    I forgot to include these sentences. Thank you. 1)Macbeth has almost forgotten the taste of fear. There was a time in which would have been alarmed or scared by a night shriek and the hair on his skin would stand if he heard a ghost story. 2) He

    asked by Mike
  156. science

    could someone pleassssse help me answer these questions? do we always see the same side of the moon and how do you know for sure? if the moon rotated just asa quickly as earth , would we see the same sides of the moon from earth?explian.

    asked by samamtha
  157. British Literature

    My class is reading from the Canterbury Tales from the prologue. I have to read the Manciple part. Our teacher wants us to write a paragraph about our character. I'm not sure what she's askiing for. I guess I have to research the manciples appearance,

    asked by Jennifer
  158. chem

    How many grams of magnesium oxide are formed when 13.5 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to the following reaction? i got .496 g but i know that like way off

    asked by hannah
  159. Algebra

    Alycia's pggy bank has dimes and quarters in it. The numbers of dimes is four less than three times the number of quarters. If the total value of the coins is $7.85, how many dimes are in the piggy bank?

    asked by Scott
  160. biology

    who made the first dna model and when

    asked by marcus
  161. math

    evaluate 15 x 4 2/3

    asked by Junior
  162. 9th grade polynomials

    How do you write the expression for the area of the rectangle If the length of a rectangle is two more than three times it's width,then write an expression for area of the rectangle Find the perimeter of the rectangle in problem 1.

    asked by Corey wicks
  163. math

    How do I set-up/solve this problem? Please help me. The half-life of the radioactive isotope gallium-70 is 20 minutes. If the initial amount of gallium-70 is 25 milligrams, when will 10 milligrams be left?

    asked by Amy
  164. MacroEconomics

    Assuming that the following table describes a typical consumer’s complete budget, compute the item weights for each product. Item: Quantity: Unit price: Coffee 20 pounds $5 Tuition 1 year $4,000 Pizza 100 pizzas $8 DVD rental 75 days $5 Vacation 2 weeks

    asked by Ojie
  165. Intermediate Algebra

    Solve for X (1/8)=(2/3)x-1/2

    asked by Justin
  166. Psy 285

    Discuss how confirmation bias can influence perceptions and how some beliefs can actually generate their own confirmation

    asked by Anonymous
  167. Math

    How do you find the expression for the perimeter of the flag One side of a triangular flag is two more than five times tue third side

    asked by Cory
  168. Physics

    Calculate the magnitude of the potential difference between points a and b in the figure if R1=2.36 Ù, R2=4.29 Ù,and R3=10.08 Ù.

    asked by Paul
  169. Chemistry

    when 0.154 g of sulfur is finely grounded and melted with campor, the freezing point of the campor is lowered by 5.47 celsius. A)what is the molecular weight of sulfur? B)what is its molecular formula? fp of campor: 178.4 kf of campor: 40

    asked by Josh
  170. Calculus

    A retangular poster is to be made out of cardboard. The margins on the top and the bottom will be 2 inches. The margins on the sides will be 1 inch. The area of the poster devoted to the printed material must be 300 square inches. (a) to the nearest .001

    asked by Katie
  171. Science followup

    I posted a question on flying fish and Sra answered me this morning, and she sent me a browse that she typed in but nothing there was helpful...Does anybody else know if flying fish can communicate and if so how?..Thank you!

    asked by Inna
  172. chemistry

    Aspirin is synthesized in a reaction with a theoretical yield of 0.728 moles of aspirin. What is the % yield of 1.26 g of aspirin is recovered MW of aspirin is 180.15 thank you so much!

    asked by Dianne
  173. Physics

    A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.93 V and a current of 2.7 A are induced in the coil. The wire is the re-formed into a single-turn square coil, which

    asked by Emily
  174. Science

    accelerates from 15 m/s to 30 m/s in 3.0 s. What is the car's acceleration?

    asked by Dy'Michelle
  175. properties of addition

    what is 3 1/4 plus [3 1/4 plus 5 1/5]

    asked by gerald
  176. prealgebra

    4 y h -5

    asked by ris
  177. social studies

    what is columbias continant

    asked by samar
  178. physics

    A piston, A, as shown below, has a diameter of 0.54 cm. A second piston, B has a diameter of 3.8 cm. Determine the force, F, necessary to support the 500.0 N weight in the absence of friction.

    asked by Nataliya
  179. To helper -

    Did you get my latest email today?

    asked by Writeacher
  180. Chemistry

    F2 (g) 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

    asked by Michael
  181. math

    A=___,b=8.1mm,h=16mm?

    asked by Elijah
  182. physics

    a race car travels northward on a straight level track at a contant speed traveling 0.750 km in 20.0s. the return trip over the same track is madein 25.os

    asked by Anonymous
  183. English

    I left out these few statements on the themes I would like you to check. Thank you very much. 1.Macbeth is the shortest of S’s tragedies; it is simple in its plot but complex in its psychological analyses of what takes place in the mind of the criminal.

    asked by Mike
  184. ecology

    Which organism belongs to a species that is likely to undergo genetic changes in shortest period of time? bacterium, fish, plant,or bird?

    asked by Ryleigh
  185. Physics

    If the amplitude of a sound wave is quadrupled, by what factor will the intensity increase?

    asked by Student in Need
  186. Chemistry

    1. Write balanced equations for each of the following processes. a. Chromium- 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture. b. Iodine-131, used to treat hyperactive thyroid glands, decays by

    asked by Sharon
  187. history

    the island that became Rome northwestern frontier?

    asked by Carol
  188. Please help me

    what are parts of a poem?

    asked by kelly
  189. chemistry

    a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid

    asked by ella
  190. Calculus

    Assume that each of the follwing functions gives the position of an object at time t. Find the velocities indicated by setting up and evaluating a limt algebraically. (a) s(t) = 3t^2, Find v(-1). (b) s(t) = 1/t , Find v(2). (c) s(t) = square root of t,

    asked by Catherine
  191. Physics

    A 74.0 kg ice skater moving to the right with a velocity of 2.90 m/s throws a 0.15 kg snowball to the right with a velocity of 23.2 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction

    asked by Mel
  192. History

    What creatures did the europeans introduce in the new world?

    asked by Vivian
  193. Physics

    A 20.0 g marble sliding to the right at 58.8 cm/s overtakes and collides elastically with a 10.0 g marble moving in the same direction at 14.7 cm/s. After the collision, the 10.0 g marble moves to the right at 73.5 cm/s. Find the velocity of the 20.0 g

    asked by Kate
  194. math

    Bill purchased 4 pens for $3.32 including $.16 sales tax. FIND THE C COST OF ONE PEN. I need to write this in an equation. Then solve that's what the worksheet says.

    asked by travis
  195. Physics

    A moving object has a kinetic energy of 188 J and a momentum with magnitude of 26.2 kg·m/s. Determine the mass of the object.

    asked by Mike
  196. U.S Government

    how did the colonists governmental experience influence the constitution?

    asked by angiie
  197. Math

    Draw two line segments connecting angles of the hexagon to make four quadrilaterals...

    asked by CJ
  198. chemistry

    you are conducting a freezing-point determination in the laboratory by using an aqueous solution of KNO3. The observed freezing point of the solution is -1.15 C. Using a pure water sample, you recorded the freezing point of the pure solvent of the same

    asked by Anonymous
  199. chemistry

    a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid

    asked by ella
  200. math

    How do the ideas of divisibility and multiples relate to the study of fractions? Show that 1,078 and 3,315 are relatively prime. What is the shortest length of television cable that could be cut into either a whole number of 18-ft pieces or a whole number

    asked by anonymous
  201. PHYSICS

    A copper vat is 10 m long at room temperature (20 degrees C). How much longer it is when it contains boiling water at 1 atm pressure? Air in a balloon does 50 J of work while absorbing 70 J of heat. What is its change in internal energy? A bottle

    asked by Matt
  202. geometry

    what 3 dimensional shape has base of a triangle,4 faces,6 edges and 4 vertices?

    asked by sally
  203. Calculus (pleas help I really need to check this)

    Assume that each of the follwing functions gives the position of an object at time t. Find the velocities indicated by setting up and evaluating a limt algebraically. (a) s(t) = 3t^2, Find v(-1). (b) s(t) = 1/t , Find v(2). (c) s(t) = square root of t,

    asked by Catherine
  204. 8th grade science

    Why is water essential to life?

    asked by Kallie
  205. grammar

    complete the sentence..Athens is the ----capital. I'm looking at a map and i see it;s in Greece

    asked by michael
  206. Chemistry

    Please help! Answer the following for a body centered unit cell. Crystalline Solids Program Answers should be numerical, set r = 4.0. edge in terms of r, the lattice pt radius: face diagonal in terms of r, the lattice pt radius: body diagonal in terms of

    asked by Shawn
  207. Chemistry

    Please help! Answer the following for a body centered unit cell. Crystalline Solids Program Answers should be numerical, set r = 4.0. edge in terms of r, the lattice pt radius: face diagonal in terms of r, the lattice pt radius: body diagonal in terms of

    asked by Shawn
  208. math

    On the fastest speedways some drivers reach average speeds of 4 miles per minute. Write a formula that gives the number of miles m that such a driver would travel in x minutes. How far would this driver travel in 36 minutes?

    asked by Anonymous
  209. Statistics

    Which of the following is true of the association between brand loyalty and attitude toward the brand? As brand loyalty increases, attitude toward the brand increases There is a moderately strong relationship between the two variables . The relationship

    asked by Lara
  210. physics

    a police car is cruising on the right lane at 25 m/s (meters/sec.). A motorcycle, on the left lane, passes the police car at a constant 35 m/s. The police officer reacts fast and accelerates at a constant 5 m/s^2. (a)When does he catch up? (b)What was his

    asked by Ralph
  211. chemistry

    how much heat (in KJ) is released when 2.50 mols of NaCl is dessolved in water?

    asked by alex
  212. science check plzzzzzzzzzz

    if your computer uses 2.5A at 120V, how much will it cost to use the computer for 4 hours a day, seven days a week for two weeks? assume that the cost of electricity is $0.09 for every kWh*h of energy. i solved it like this way could you check of i got it

    asked by kim
  213. COM220

    Create a full-sentence that includes effective arguments and counter arguments to support my thesis people do not understand the importance of staying in school

    asked by Patty
  214. math

    Explain how you can multiply 3 times 24 by using arrays. Then give the product.

    asked by jay
  215. physics

    a .250kg block of aluminum is heated to 100 C and then dropped into .60 kg of water that is initially at 20C. What is the equilibrium temperature of the system? The specific heat of aluminum is .22 kcal/kg C

    asked by Anonymous
  216. language arts

    Diagram Either the suspect will come out or the police will go after him.

    asked by Justin
  217. math

    a car drives around a circular track 3 times if the track has a radius of 0.5 miles , how far did the car travel in total?

    asked by linda
  218. Leadership

    What does it mean to lead by example?

    asked by Alex L.
  219. science/maps

    Can a contour line on a topographic map connect a point with an elevation of 100 feet to a point with an elevation of 110 feet? Explain why or why not.

    asked by linda
  220. physics

    A rock is thrown from a cliff top at 18m/s, 25 degrees above the horizontal. It lands on the beach 4.2 seconds later. a) What is the height of the cliff? b) Hor far from the base of the cliff did the rock land?

    asked by stacy
  221. science/maps

    On a topographic map, how would you show a hill with an elevation of 80 feet if the contour interval is 10 feet?

    asked by linda
  222. science

    A fire is burning under point C on a metal rod.After two minutes above the fire,which point is the hottest?Point C,W,X,Y or Z

    asked by Nikole
  223. algebra 2

    Use substitution to solve the system 3x + 7y = −3 (1) 7x + y = −53 (2) Find the value of x. (part 2 of 2)Find the value of y.

    asked by briana
  224. Leadership

    would being accepted into a state-wide orchestra be considered a leadership service? because it helped inspire others...

    asked by Amy
  225. maths

    how much must i deposit today so that i can have 4700 in tow years time if the bank pays 5% compound interest yearly

    asked by kisha
  226. social studies

    how did the spanish differ from the portugese in searching for a route to asia

    asked by tim
  227. Math

    How many possible license plates are possible in which two letters are followed by at least 1 digit and no more than 4 digits?

    asked by ashley
  228. history

    what does the author of "the real story of jamestown" argue is the most tremendous change in the world next to the extinction of the dinosaurs?

    asked by Maria
  229. chem-repost

    How many grams of magnesium oxide are formed when 13.5 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to the following reaction? i got .496 g but i know that like way off

    asked by hannah
  230. chemistry

    How can you tell if two compounds that you steam distilled are pure?

    asked by ben
  231. Math

    Use the sum or difference identities to find the exact value of each trigonometric function. sec pi/12 Thanks :)

    asked by Alexis
  232. physics

    three more questions: 1) A 1.50kg projectile is launched at 18.0m/s from level ground. The launch angle is 26 degrees above the horizontal. (Assume negligible friction) a) What is the maximum height reached by this projectile? b) How was will the

    asked by stacy
  233. Physics

    Kim is tuning a piano. She strikes a 440 Hz tuning fork and a string at the same time and hears 4 beats per second. a) What are the possibe frequencies of the string? b)She tightens the string a little then repeats. She now hears 1 beat per second. What is

    asked by Courtney
  234. History

    What is Republicanism? Give an example.

    asked by TayTay
  235. 7th grade science

    I keep asking ...Ms.Sue, could you possibly help? Can flying fish communicate and how?

    asked by Inna
  236. history

    when did king louis(married to queen eleanor) die?

    asked by Justin
  237. Question about Jiskha

    This is a customer type of question..I was wondering..for a while i couldn't post questions...why?

    asked by Wondering
  238. language arts

    can you give composition based on a car

    asked by akeim
  239. Physics

    If one firework produces a sound intensity of 90 dB, what would be the intensity of a sound produced by 1000 firecrackers all going off at once?

    asked by Hannah
  240. Physics

    A piston contains 1m^3 of helium at a temperature of 250 K and an absolute pressure of 1.0kPa. The following changes are made in sequence: (a) First the volume of the piston is decreased to 0.2 m^3 while the temperature is kept constant, what is the

    asked by Pressure of gas
  241. Physics

    Aluminum is melted during the recycling process. (a) How much heat must be transferred to each kilogram of aluminum to bring it to its melting point, 660 degrees C, from room temperature, 20 degrees C? (b) About how many cups of coffee could you make with

    asked by Heat transfer
  242. chemistry

    Im doing my lab report about steam distillation? and its asking me how i can tell if the two compounds i steam distilled are pure. but im not sure how to tell? i mean is the volatile or the nonvolatile compound the pure compound? or maybe the boiling point

    asked by ben
  243. Calculus Please Help

    Find k for which the limit below exists, and find the limit. lim x->1 (2x^2 + kx +4)/(x-1) Please show me how to do both procedures. Thanks

    asked by Catherine
  244. pre-algebra

    a bag contains 5 green marbles 2 white marbles 8 blue marbles 9 red marbles and 6 black marbles what is the probability of drawing a white marble replacing it and then drawing a green marble? Answer choices A 1/6 B 1/15 C 1/87 D 1/90 I think its D, but I

    asked by Bob
  245. Literature 7

    What page exactly does it say what Black Beauty, the horse, looked like? I can't find it.

    asked by Alyonka
  246. calculus

    Find the derivative of the following functions: x^7+2/(x^1/2) also (x^9-x^1/7)7^x

    asked by Alyssa
  247. math

    Ms Billets used 1 yard of ribbon to make a dress for a doll. Write two equivalant fractions to show what fraction of ribbon that she bought she used for the dress. she bought 4 yards.

    asked by Esther
  248. Math

    Ms. Billets used 2 feet of yarn to make an ornament. Write this lenth as a fraction of the total lenghth of yarn she bought. Is this fraction in simplest form? Explain. Ms. billets bought a total of 6 feet of yarn.

    asked by Esther
  249. Algebra 1

    REWARD!RECEIVE 10$ GIFT CARD FOR EVERY 50$SPENT 1)If your reward is $10, what do you know about the amount of your purchase? 2)Give three possible amounts if your reward is $20. 3) What should you do if your total purchase is $98? Explain your answer.

    asked by Ap
  250. geometry

    whats the angle of a perpendicular bisector if the angles are x-2 and the other angle is 80 degress?

    asked by Anonymous
  251. math

    Ms. Billets used 8 feet of string to tie together newspapers to take to the recycling center. What fraction of the string she bought does she have left? She bought a total of 12ft of string.

    asked by Esther
  252. Personalities

    What is it like for a person to handle working with multiple personalities in a group?

    asked by Alex L.
  253. 8th grade math

    -7x+7y=7 2x-2=-18 how many solutions does this system have ?

    asked by Kassandra
  254. 10th Grade Chemistry

    Which of the following molecules is polar? NCl3, NO2, H2S, or SiH4

    asked by Vova
  255. Finance Homework

    If you deposit $2,000 in a bank account that pays 9% interest annually, how much would be in your account after 14 years? Round your answer to the nearest cent.

    asked by Shan
  256. 10th Grade Chemistry

    I am having real trouble remembering how you can tell if a molecule is polar? Which of the following molecules is polar? NCl3, NO2, H2S, or SiH4

    asked by Vova
  257. language arts

    is this sentence correct -- Andrew forgot his lunchbox at school everyday.

    asked by denise
  258. MATH

    FIND DECIMAL NOTATION OF 92 1/8

    asked by Anonymous
  259. Chemistry

    F2 (g) 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

    asked by Michael
  260. reading

    what are parts of a poem?

    asked by lily
  261. Chem

    What is the pressure in a 2.00 L container which holds 0.100 mol of methane and and 0.200 mol of carbon dioxide at standard temperature?

    asked by Paul
  262. Chemistry

    The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O HNO2 + OH¯ ?

    asked by Thomas
  263. World History

    How did Muslim merchants influence the devolopment of trade in Africa?

    asked by Christina
  264. social studies

    responsibility to ensure the prosperity of the city rome

    asked by angela
  265. physics

    a speeder with unknown velocity passes a police car.the policr car starts to accelerate at a rate of2.2 m/s/s in the direction of the speeder as soon as the speeder passes.the police car reaches the same velocity as the speeder after he travelled 715 m.

    asked by Ali suleiman
  266. Algebra

    I have a problem that I need help with can someone show me the steps LiveStock Feed- Soybean meal is 16% protein and corn meal is 9% protein. How many pounds of each shoul be mixed to get a 350-lb mixture that is 12% protein?

    asked by Donna
  267. Chemistry

    A student finds that 1.00 g of a monoprotic acid, HA , requires 50.0 ml of 0.100 M KOH to neutralize it. What is the molar mass of the acid?

    asked by Patrick
  268. Biology

    An organism has three independently assorting traits AaBbCc. What fraction of its gametes will contain the recessive gene abc?

    asked by Sam
  269. Literature 7

    Another question on Black Beauty...What breed is he?

    asked by Alyonka
  270. Calculus Please Help

    Hello I'm reposting this question because right now it's at the bottom and I don't think I will get an answer. Assume that the follwing function gives the position of an object at time t. Find the velocity indicated by setting up and evaluating a limt

    asked by Catherine
  271. phy

    As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically,

    asked by kia
  272. BJ MATH

    A football player completed 56.7% of his passes last season. he attempted 224 passes. how may did he complete?

    asked by Anonymous
  273. History

    How did the nature of slavery, as recognized in Europe and Africa prior to 1600, dramatically transform and evolve during the Atlantic slave trade? Discuss the roles of Europeans, British Colonists, and West Africans in the trade, the fundamental changes

    asked by Bobby
  274. Chemistry

    Solve for the missing compound in the balanced equation: 3PbO + X ----> 3Pb + N2 + 3H2O please help .

    asked by Jazmine
  275. Chemistry

    Write the correct chemical formula for barium nitrate. What is the ratio of barium ions to nitrate ions?

    asked by Jazmine
  276. marketing

    Your manager has asked you to investigate the Internet marketing strategies used by the company's major competitors. Use the library, the Internet, and any other resources to research competitors and prepare a presentation. Here are the questions to

    asked by ashley
  277. Chem

    Upon decomposition, one sample of magnesium fluoride produced 1.65 of magnesium and 2.57 of fluorine. A second sample produced 1.38 of magnesium. How much fluorine (in grams) did the second sample produce?

    asked by KNH
  278. Government

    Describe 4 reasons that led to demands for government reform in 1830's Upper Canada. WOuld one of them be that the government was not being fair. with the land, property, taxes, and stuff?

    asked by Sara
  279. math

    lyle needs 200g of chocolate that is 86% cocoa for a cake recipe he has one kind that is 99% cocoa and another kind that is 70% cocoa. How much of each kind does he need to make the cake

    asked by Olga
  280. math

    6.375 g/dl convert to g/100ml?

    asked by ivy
  281. commission rate

    a salesperson earns 150 commission selling 3,000 worthof television sets. what is the commission rate?

    asked by bria
  282. notation

    precent notation of 5/8

    asked by bria
  283. calculus

    tangent line and normal line of y=(sqrtx)/(x+1) when p=(4,2/5)

    asked by courtney
  284. MPG

    a passenger car will go 525 miles on 17.5 gallons of gasoline in city of driving. what is the rate miles per gallon?

    asked by bria
  285. math

    Could someone please describe two main differences between classical and empirical probabilities.

    asked by Dave
  286. Algebra

    Evaluate the exprestion: 2(3x+1)/-4 for each value of "x". A.x=9 B.x=2 C.x=-1 D.x=14

    asked by Jose
  287. physics

    Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 12 mC moves from a distance of 7 cm to a distance of 18 cm. In mJ, how much work is done by the electric field?

    asked by Anonymous
  288. P I

    the amount in a savings account increased from $60 to $84. what i sthe precent increase?

    asked by bria
  289. math

    Kent invested $5000 in a retirement plan. He allocated x dollars of the money to a bond account that earns 4% interest per yr and the rest to a traditional account that earns 5% interest per yr. Write an expression that represents the amount of money

    asked by ---
  290. math

    Kent invested $5000 in a retirement plan. He allocated x dollars of the money to a bond account that earns 4% interest per yr and the rest to a traditional account that earns 5% interest per yr. Write an expression that represents the amount of money

    asked by ---
  291. calculus

    f(x)=x^2-3x+1/x^2

    asked by l
  292. statistics

    Bill wants to write the equation that demonstrates the model for explaining quarter-life crisis. He is using optimism, locus of control, income, and years since completing college as explanatory variables. Which of the following equations is most

    asked by Lara
  293. Calculus

    So, I need to graph (with my calculator) this out, and then find the area, and finally the volume. y=(x-1)^1/2, y=0, x=2, x=5; about the x-axis I ended up with some crazy answer like 15π/2, and I believe that's incorrect (but it might be right, idk). Any

    asked by Devin
  294. oz

    IT TAKES 60oz of grass seed to seed 2400ft^2 of lawn. at this rate, how much will be needed for 4400ft^2 of lawn?

    asked by bria