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2008
March

Questions Asked on March 30, 2008

For the reaction,3C2H2(g) ===> C6H6 at 25°C, the standard enthalpy change is -631 kJ and the standard entropy change is -430
1. 4 answers
2. asked by Ginger
3. 6,458 views
A child looks at his reflection in a spherical tree ornament 12.0 cm in diameter, and sees an image of his face that us reduced
1. 2 answers
2. asked by Anonymous
3. 5,062 views
When standing 1.25 m in front of an amusement park mirror, you notice that your image is three times taller. What is the radius
1. 5 answers
2. asked by Anonymous
3. 4,810 views
A solution of hydrogen peroxide, H2O2 , is titrated with potassium permanganate, KMnO4 , according to the following equation:5
1. 4 answers
2. asked by Brenan
3. 2,595 views
7)A car is moving with a uniform speed of 15.0 m/s along a straight path. What is the distance covered by the car in 12.0
1. 5 answers
2. asked by Jon
3. 2,440 views
swimming duck paddles the water with it's feet once every 1.6s, producing surface waves with this perios. The duck is moving
1. 1 answer
2. asked by Amanda
3. 1,965 views
Part D - August Variance AnalysisDuring September of the current year, the controller was asked to perform variance analyses for
1. 1 answer
2. asked by Anonymous
3. 1,933 views
A ship travels 200km west from port and then 240km due south before it is disabled. Illustrate this in a vector diagram. Usa
1. 1 answer
2. asked by Devon
3. 1,790 views
1) A red die and a blue die are tossed. What is the probability that the red die shows a 3 and the blue die shows a number
1. 1 answer
2. asked by Lucy
3. 1,762 views
What volume will 1.216 g of SO2 occupy at 18 degrees celcius and 755 torr?
1. 2 answers
2. asked by bob
3. 1,678 views
The brown color associated with photochemical smog is due to NO2(g). This is involved with the following equilibrium in the
1. 2 answers
2. asked by Ginger
3. 1,560 views
a 4 L sample of gas at 30 degrees celcius and 1 atm is changed to 0 degrees celcius and 145,000Pa. what is its new volume?
1. 5 answers
2. asked by bill
3. 1,504 views
Given two non-collinear vectors a and b, show that a, axb, and (axb)xa are mutually perpendicular.Also Express the unit vectors
1. 3 answers
2. asked by Anonymous
3. 1,287 views
Amber, BiologyFirst of all, as Christina said, "Post a New Question" because when you post under someone else's post we assume
1. 0 answers
2. asked by SraJMcGin
3. 1,276 views
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is
1. 2 answers
2. asked by Chris Adison
3. 1,256 views
Calcualate the volume of 0.300mol of gas at 60 degrees C and 0.821atm.
1. 5 answers
2. asked by bill
3. 1,227 views
Nitrogen(75.5 kPa), oxygen (19.2 kPa), carbon dioxide(0.05 kPa) and water vapor(4.3 kPa) are the usual atmospheric components.
1. 1 answer
2. asked by joe
3. 1,200 views
Two vectors 2a+b and a=3b are perpendicular. Find the angle between a and b, if |a| = 2|b|.
1. 1 answer
2. asked by Anonymous
3. 1,137 views
A 1-kg book is at rest on a desk. Determine the force the desk exerts on the book.
1. 2 answers
2. asked by anysse
3. 1,116 views
Find the second derivative of y=loge(logex)Show that y=loge(logex) is a solution of the equation xd^2y/dx^2 + x(dy/dx)^2 +
1. 1 answer
2. asked by daria
3. 1,099 views
Part DNote: This section is a continuation from Parts A, B, and C of the comprehensive problem. Be sure you have completed Parts
1. 1 answer
2. asked by Anonymous
3. 1,052 views
Two small silver spheres with a mass of 10.0g, are separated by 1.00m. Calcuate the fraction of the electrons in one sphere that
1. 1 answer
2. asked by ~christina~
3. 1,042 views
hi im doing a debate tomorrow on global warming, i am arguing that it DOES exsit. the opposing side who don't believe in global
1. 2 answers
2. asked by gabriella
3. 998 views
the distance between north bay and sudbury is about 125km. If they are 10 cm apart on a road map, what is the map scale?
1. 1 answer
2. asked by Cynthia
3. 992 views
Part D - August Variance AnalysisDuring September of the current year, the controller was asked to perform variance analyses for
1. 1 answer
2. asked by Anonymous
3. 989 views
How much work does a 120 pound boy do in climbing to the top of the Washington Monument - a climb of 550 feet? If the climb in
1. 3 answers
2. asked by walt
3. 976 views
"What position would you take on appeasement if you had been living in Canada during the 1930's and had heard about Adolf Hitler
1. 3 answers
2. asked by Natalie
3. 971 views
Solve by the substitution method: 2x - 3y = 7 y = 3x - 7
1. 3 answers
2. asked by Sammy
3. 961 views
i really need help and almost every website can't help me saying what hopperty means i here own word what can i do
1. 4 answers
2. asked by cindy
3. 942 views
Solve by the substitution method:
1. 1 answer
2. asked by Sammy
3. 940 views
A Boeing 747 jet with a wingspan of 60.0 m is flying horizontally at a speed of 287 m/s over Phoenix, Arizona, at a location
1. 1 answer
2. asked by Chris Adison
3. 937 views
what are some examples of activities one can participate in after i have received my bachelors degree that coincides with this
1. 1 answer
2. asked by jean
3. 883 views
Hi. Can someone please explain to me the exact relationship between the greenhouse effect, global warming, and the ozone layer?
1. 2 answers
2. asked by Liam
3. 872 views
4 charged particles are at the cornedrs of a square of side a as shown.a) determine the magnitude and direction of the electric
1. 3 answers
2. asked by ~christina~
3. 870 views
I am having a problem with ratio's
1. 2 answers
2. asked by KIm
3. 861 views
A 500 turn solenoid with a length of 20 cm and a radius of 1.5 cm carries a current of 2.0 A. A second coil of four turns is
1. 2 answers
2. asked by Chris Adison
3. 847 views
I'm stumped... I've gone through my book three times now and can't find this information. Can someone please help me?First...
1. 1 answer
2. asked by Justie
3. 847 views
True/False3)The position-time graph of an object moving with a constant average velocity is always a straight line. True 4)A
1. 0 answers
2. asked by Jon
3. 826 views
the importance of computers in our lives
1. 0 answers
2. asked by Anonymous
3. 825 views
Part D - August Variance AnalysisDuring September of the current year, the controller was asked to perform variance analyses for
1. 1 answer
2. asked by Anonymous
3. 802 views
how to create a survey
1. 0 answers
2. asked by robert
3. 801 views
For the first question I really need all help I can get. Thanks!1. Given a and b are unit vectors, a) if the angle between them
1. 1 answer
2. asked by Anonymous
3. 790 views
A convex spherical mirror of focal length 15.0 cm is to form an image 9.00 cm from the mirror. Where will the object be placed?
1. 2 answers
2. asked by Anonymous
3. 778 views
Two identical violin strings, when i tune and stretched with the same tension, have a fundamental frequency of 440Hz. One of the
1. 1 answer
2. asked by Amanda
3. 744 views
13)What can you say about the motion of a body if its velocity-time graph is a straight line inclined with the time axis?The
1. 1 answer
2. asked by Jon
3. 732 views
How do you unscramble the French word lapcre?
1. 2 answers
2. asked by Ernest
3. 730 views
186 is 60% of what number? (how do I find this out)
1. 1 answer
2. asked by calie
3. 716 views
T/FMalibu Beach Parties finds that the tastes and preferences of its customers change more rapidly than in the past. The manager
1. 1 answer
2. asked by Jackie
3. 715 views
18) Which of the following is the most significant result?A) P<.001 B) P<.005 C) P=.05 D) P>.05 Okay, I have the answer key and
1. 1 answer
2. asked by Stephanie
3. 703 views
1. A ball is projected horizontally from the edge of a table that is 4.0 meters high, and strikes the floor at a point3.0 meters
1. 2 answers
2. asked by Sandhya
3. 695 views
What is a 95% confidence interval for mue, the population mean time the postal service employees have spent with the postal
1. 1 answer
2. asked by Stephanie
3. 685 views
I am just curious if you know of any one I could submit an English Essay to. It is less than one page and I need someone to
1. 8 answers
2. asked by CJ
3. 672 views
I'm making a 3-d model of a plant cell what can i use to represent the cytoplasm? i'm in the 6 grade.
1. 2 answers
2. asked by Montez
3. 623 views
Simplify:x^5*x^pi Answer: x^8.14 Is this correct? I know that this is a repost of a question I posted yesterday, and I
1. 1 answer
2. asked by Lucy
3. 619 views
11)A race car travels on a racetrack at 38 m/s and slows at a constant rate to a velocity of 20 m/s over 10 s. How far does it
1. 1 answer
2. asked by Jon
3. 619 views
Whis is the relationship between DG and DGf° for the reactionMgF2(s) ===> Mg2+(aq) + 2 F-(aq) Is it: DG = {DGf°[Mg2+(aq)] + 2
1. 1 answer
2. asked by Ginger
3. 613 views
I need help with an assignment that is due today and I am totally lost. All I need is for someone to point me in the right
1. 1 answer
2. asked by CD
3. 606 views
A lead ball, with an initial temperature of 25.0oC, is released from a height of 96.0 m. It does not bounce when it hits a hard
1. 1 answer
2. asked by Lindsay
3. 606 views
One of the early economic “laws” was called Say’s Law that stated that—supply creates its own demand. Using the circular
1. 1 answer
2. asked by samatha
3. 582 views
How do you write 600nm in scientific notation?
1. 1 answer
2. asked by Bill
3. 580 views
A man standing 1.25 m in front of a shaving mirror produces an inverted image 25.0 cm in front of it. How close to the mirror
1. 1 answer
2. asked by Anonymous
3. 574 views
I have to write an outline for a research paper with the cons of performance enhancing drugs in sports. I have a lot of
1. 4 answers
2. asked by J P
3. 562 views
I am thinking about going back to college and taking online math classes. I am eligible to take either financial mathmatics or
1. 1 answer
2. asked by Matt
3. 558 views
Jerry monthly salary consist of $850 pluss commission of 15 % on the total sales made.If his total sales for the month of March
1. 3 answers
2. asked by MTH
3. 556 views
I don't understand how to work out the volumes of weak acid and strong base to mix to make 1L of buffer when given the
1. 2 answers
2. asked by Sarah
3. 555 views
The measures of six angles in a convex heptagon are 120 degrees, 88 deg., 91deg, 164deg.,173deg.,and 99deg. Find the measure of
1. 1 answer
2. asked by bill
3. 551 views
Use the cross product to find a vector perpendicular to each of the following pairs.a) (4,0,0) and (0,0,4) I plugged in the
1. 3 answers
2. asked by Anonymous
3. 549 views
How many minutes will it take a current of 66.049 Ampères to deposit 86.825 grams of aluminum (26.981538 g/mol)?Al has a charge
1. 1 answer
2. asked by Ginger
3. 549 views
So, the first movement of Mozart's 21st piano concerto (K. 467) is in sonata allegro form...which means there are two "themes"
1. 2 answers
2. asked by Seymour
3. 547 views
1. solve by using the quadratic formula. 5x^2+x=32. solve by completing the square. x^2=5x+2 3.solve by using the square roots
1. 1 answer
2. asked by mary
3. 544 views
By "see" I meant that I had checked my answer on the internet to see if I was correct in thinking that multipying the charge of
1. 1 answer
2. asked by Karla
3. 540 views
I am researching fire ants for an assignment and need a map of where they were first introduced in Australia and where they have
1. 2 answers
2. asked by Melody
3. 534 views
Okay, so I'm getting the hang of this. Anyway, the first "Theme" of Mozart's 21st Piano Concerto is plain to me. But where does
1. 1 answer
2. asked by Seymour
3. 530 views
9)You are taking a road trip to the beach for Spring Break. You leave at 12:00pm. At 12:10 you stop for lunch 10 miles down the
1. 3 answers
2. asked by Jon
3. 520 views
I need a summary on ch.13,14,15 on "Death on the Ice." by Cassie Brown I would really appreciate your help.
1. 2 answers
2. asked by Spencer
3. 504 views
Differentiatee^(2x^3+x) X tan(x^2) tan e^x / ln(x^6/2-3x+3e) cos(tan(e^4x^2))
1. 0 answers
2. asked by daria
3. 501 views
How do you find the LCM of 3 and 7?
1. 2 answers
2. asked by Anonymous
3. 496 views
90% of adults drink milk.A sample of adults in an area was taken. 657 of 750 drink milk. Do these responses provide strong
1. 2 answers
2. asked by Morgan
3. 495 views
find the derivative of the function y=x^xHence fin the coordinates of the turning point of the funcion y-x^x. Give the values
1. 2 answers
2. asked by daria
3. 492 views
I need help to fill up my debate points.Debate - Young people should not be able to before marriage. TeamVeiw - Against. So we
1. 0 answers
2. asked by 8D
3. 490 views
Why is the Spanish Civil war a forgatable war ?What was it ? Who was in it ? What are right and left wing ?
1. 1 answer
2. asked by AQA
3. 488 views
17)Under what conditions can an object travel a certain distance and yet its resultant displacement be zero?When the final
1. 1 answer
2. asked by Jon
3. 479 views
I don't understand how to work out the volumes of weak acid and strong base to mix to make 1L of buffer when given the
1. 0 answers
2. asked by Sarah
3. 478 views
How can I tell whether a function will be reflected in the x-axis or y-axis and whether it will be horizontally and vertically
1. 2 answers
2. asked by Lucy
3. 478 views
lenses that always diverge light rays that strike themis that convex or concave? I am not sure.
1. 1 answer
2. asked by Anonymous
3. 477 views
Under the legal definition of Fructus Industrials is it true that "Minerals in the Soil" would not fall under this? It would in
1. 1 answer
2. asked by Wendy
3. 476 views
What are the coronal plane and body directions
1. 1 answer
2. asked by AXIA
3. 474 views
How can students be involved in understanding and using rubrics to help with their learning mathematic concepts or skills?I am
1. 0 answers
2. asked by Sarah
3. 473 views
What are performance indicators? What is the difference between a rubric and a performance indicator?
1. 1 answer
2. asked by Sarah
3. 471 views
how do bacteria in the human intestine help maintain health?
1. 4 answers
2. asked by Sonic
3. 471 views
For a process to be at equilibrium, it is necessary thata)DSsys = DSsurr b)DSsys = -DSsurr c)DSsys = 0 d)DSsys = 0 and DSsurr =
1. 5 answers
2. asked by Ginger
3. 471 views
I´m an English teacher, I need a program that self correct essays from the students.Where can I find one?
1. 1 answer
2. asked by Maria
3. 470 views
Could someone help me find reliable websites (not Wikipedia, etc) that explains that ribosomes are membrane-bound organelles?
1. 1 answer
2. asked by Anonymous
3. 459 views
What equation can I use to solve this kind of problem?A metal undergoes electrolytic reduction according to ne- + Mn+ ===> M.
1. 1 answer
2. asked by Ginger
3. 457 views
A 3000 pound car is pushed 500 feet by three boys. A force of 60 pounds is required to move the car. How much work did the boys
1. 1 answer
2. asked by walt
3. 438 views
The head of a round piston has a pressure of 210 psi pushing down on it. The piston is 3 inches in diameter. What is the force
1. 0 answers
2. asked by walt
3. 430 views
Mary had 6 pennies and 4 nickels. If she took three coins, what is the probability that all the coins were pennies?I think it's
1. 1 answer
2. asked by Ktowns
3. 423 views
1. He has gray hair.2. He has white hair. Can we use #2? Which one is right?
1. 1 answer
2. asked by John
3. 422 views
Two cards are drawn from a standard deck of cards. Find the probability that a king or a red card is drawn.Work: 4/52 +
1. 1 answer
2. asked by Lucy
3. 420 views
What is the color of all the visible light frequencies mixed together equally?I would think white. Is that right?
1. 1 answer
2. asked by Tara
3. 420 views

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