Questions Asked on
May 30, 2007

  1. Chemistry

    1.Describe the apparent relationship between H30+ and OH- concentrations when an endpoint is reached in an acid-base titration 2. The indicated end-point of an acid-base titration seldom occurs at a pH of 7. What determines the pH of the end point? 1. They

    asked by MR
  2. science

    globol warming is frequently disscussed topic it seems that every time you turn on the tv or open the newspaper there is some mention of global warming and the effect it is having on the world's enviroment write a paragrah about the cause of global warming

    asked by Anonymous
  3. physics

    A) What is the minimum speed, relative to the Sun, necessary for a spacecraft to escape the solar system if it starts at the Earth's orbit? B) Voyager I achieved a maximum speed of 125 000 km/h on its way to photograph Jupiter. Beyond what distance from

    asked by jean
  4. Pre-Calculus

    As a balloon in the shape of a sphere is being blown up, the radius is increasing 1/pi inches per second. At what rate is the volume increasing when the radius is 1 inch? I know that the volume of a sphere = 4/3(pi)r^3 I don't know what to do next. Figure

    asked by Corin
  5. math

    In a game, a player tosses a coin 4 times. If the player gets 3 or 4 heads, he/she wins. What is the theoretical probability of winning this game? I just need to know the outcomes. I don't know how to get them. Please and Thank you. Coin 1: 50% Heads Coin

    asked by Angela
  6. maths(urgent)thanks.

    a parabola with turning point at (1,-2) and passing through the origin.find the equation of this parabola. how do i do this? can someone please show me how to solve it step by step?thanks! You know that at x = 0 the function is zero. Because the turning

    asked by Emma
  7. Science - Chemistry

    How many atoms are in 12g of Zinc? There are 6.02 x 10^23 atoms in 1 mol of anything. 1 mol of Zn has a mass of 65.38 g so 12 g is what part of a mol of Zn? and that fraction x 6.02 x 10^23 will be the number of atoms of Zn in the 12 g Zn.

    asked by Sarasi
  8. algebra

    Can someone please help me with this problem? Thanks! Evaluate the infinite geometric series: 8+4+2+1+... I thought you needed to know the number of terms to evaluate, but how do you know them if it is infinite? The limit of Sn = 1 + r + r^2 + r^3 + r^4 +

    asked by Mercy
  9. Calculus--> bobpursley

    How do you get m=0? from taking the second derivative? does c=1? Can you check my work on how I get the derivative of R=M^2(c/2-m/3) NEXT R=1/2(CM^2)-1/3(M^3) NEXT dR/dM=CM-M^2. I checked in the back, and that was the answer for the first part of the

    asked by Anonymous
  10. science

    On a warm summer afternoon, why would cumulus clouds and thunderstorms form in one part of a town and not in another? Usually such clouds are not in towns. They are in the upper atmosphere. Please read: http://en.wikipedia.org/wiki/Cumulus_cloud THEN TRY

    asked by Isaac
  11. Factoring

    What does 3x^3-3x+2=0 come out to? How would I solve this? Is the x cubed supposed to be x squared? You can compare the equation with the identity: (a+b)^3 = a^3 + 3 a^2 b + 3 a b^2 + b^3 which you can rewrite as: (a + b)^3 = 3 ab (a + b) + a^3 + b^3 (1)

    asked by Ace
  12. maths probability...

    I can't answer this exam question! Please help me: Jodie and Karen play a game with a pack of 40 numbered cards. There are four cards with each number from 0 to 9. Jodie picks a card and keeps it. Karen then picks a card. What is the probability that they

    asked by jaffacakes
  13. Physics

    A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The helium nucleus is observed to rebound at an angle '2 = 41° from the neutron's initial direction. The neutron's initial speed is 5.6

    asked by micole
  14. SCIENCE

    Ms. Sue was very helpful with this question,but now one of my friends disagrees. I am more confused than ever. Please help. The use of a plant crop to harness the sun's energy for conversion to energy sources is termed _________. Ms. Sue explained to me

    asked by Meg
  15. Science Grade 3

    Heat is flowing from the living room to the bedroom. I need to draw a diagram that shows what you know about the temperature in each room...what should I do? Heat can flow if warm air is interacting with cooler air. (lesser and greater densities) It always

    asked by Marie
  16. maths help needed!(urgent)

    find the equation of the tangent to y=x-(a^3/x^2) at the point (a,0) how to i work this out??can someone please show me how to do it step by step?thanks!!! Take the dervative of y y= x- a^3 x^-2 y'=1+2a^3/x^3 so the equation for the tangent is y= mx + b

    asked by Emma
  17. Grade 3 science

    Are cotton balls a better insulator than paper. I say cotton balls but the teacher wants me to write a hypothese which I did and explain how I would test it. I know cotton is a better insulator because it is used in materials can you give me a test or

    asked by Marie
  18. HUM 130

    What events and figures have shaped the development of Islam in the United States? These sites explain how Islam has developed in the U.S. http://www.islam101.com/history/population2_usa.html http://en.wikipedia.org/wiki/Islam_in_the_United_States

    asked by CJ
  19. ANOTHER SCIENCE

    I cannot find this one. Intertidal communities that are constantly battered by the waves may be as, or more, productive than the world's ______ _____ The answer is rain forests. I answered my own question. Thanks nice one!=)

    asked by Meg
  20. Algebra 2

    factor each polunomial completely. May I get some help please? x2(squared)-4 1X2-4=1x2+(-4)= -3x? I'm not sure I know how to factor `')brie~ To indicate x squared, use x^2. You need to get the numerical product of 4 without getting a middle x term. This

    asked by KeVon
  21. science ( physics)

    hello, i am having trouble with this problem. Calculate the average force of friction acting on a wood block as it is propelled along the floor by an elastic band ? my solution and my ideas: What does it mean by average froce of friction? I first weighed

    asked by charlie
  22. algebra

    A principal of $5000 was invested in a savings account for 4 years. If the interest earned for the period was $400, what was the interest rate? i know this is 1.5 % or at least I think it is but how do i write it out? Use the equation I=Prt, where

    asked by confused
  23. Science grade 3

    I know that fresh water will freeze faster than salt water but I need to fill in a table. The table shows some variables which are the amount of water and the amount of salet. I need to write how I would control each variable and I do not quite understand

    asked by Marie
  24. algebra

    Solve the system by addition.

    asked by did I do this correct/
  25. science

    Please help this is worth a big grade and is due tomorrow stoichiometry calculation- Na weighs .53g water is 91.92 ml Patm= 30.03 in Hg Gas Law Calculation same info as above Balanced Chem. equation same info as above Unit conversion setup and calculation

    asked by matt
  26. chem

    why is H+ a proton h+ would be a proton because it has a positive electric charge,just as all protons have to be positive. im just beginning to stdy this so take my answer and search it before you write anything down, but im pretty sure its right. Yeah,

    asked by anona
  27. SCIENCE

    Help. Am I right or wrong. The use of a plant crop to harness the sun's energy for conversion to energy sources is termed ___________ Bioconversion? Check these sites for your answer.

    asked by Meg
  28. math

    You have a difference of squares (x^2-3)(x^2+3) One of these factors to two real roots, the other to two imaginary roots. You have a difference of squares (x^2-3)(x^2+3) One of these factors to two real roots, the other to two imaginary roots. Let g(x)=

    asked by bobpursley
  29. chem

    name three ways to increase the pressure inside an oxgen tank What do you think? Heat the tank? Add oxygen? Add another gas?

    asked by sam
  30. algebra

    x+9>2 how do I solve and graph this? The graphing part would be hard to explain. The equation, you solve the same as if the greater than sign (>) was an equal sign. (But don't change it to an equal sign) a+b>c To solve for a: a>b-c Matt I'm stupid

    asked by jean
  31. International Business

    Consider the following scenario: You work for a company that manufacturers skateboards. Until now your company has only sold their skateboards domestically, but now the CEO is interested in exporting the skateboards to Australia. The CEO asks you to design

    asked by Emily
  32. S.ST.

    PL. TELL ME PHYSICAL ENVIORNMENT AT THE KONARK TEMPLE AT PRESENT AND MATERIALS USED IN CONSTRUCTION OF KONARK TEMPLE AND WAYS TO PROTECT THE MONUMENT AND NEED TO PRESERVE AND PROTECT THE MONUMENT AND ALSO THE STORIES AND LEGENDS ASSOCIATED WITH THE

    asked by DHAWAL
  33. Maths

    If I have two tickets for a football match. this represents 0.00005 of the total tickets sold. How many tickets were sold ? 2 is to 0.00005 as x is to 1 expressed as 2/0.00005 = x/1 cross multiply and solve for x

    asked by QAE
  34. HUM 130

    How has Christianity, a faith based on the teachings of one text (the Bible), divided into so many denominations? There are many different ways of interpreting any religious book, including the Bible. Also, people have different personal experiences that

    asked by CJ
  35. chemistry

    Hi. We did a popcorn popping lab for chemistry and I was wondering if someone could help me with these few questions here: 1) Why is popcorn better stored in the freezer or refrigerator rather than on the shelf at room temperature? My Answer: I think it

    asked by Georgiana
  36. science

    thanks for the other info but im still stuck on one...i think the answer would be that there would be no seasons at all but i think i need a little more information. please help! question: how would seasons on earth be different if there was no axial tilt?

    asked by marina
  37. eNgLiSh

    In your opinion, which book is more understanding/ interesting/ etc. : The Secret Life of Bees The Five People You Meet in Heaven (in advance- this is NOT a poll, so no one get mad at me) What are the advantages and disadvantages of each book(i.e- one book

    asked by brie
  38. English

    Both sentences are correct. But, perhaps a better sentence would be -- "The capacious room was in one of the nine elementary schools in the area." I am writing a personal narrative for my AP english class. One sentence I had written went as follows: The

    asked by Ms. Sue
  39. Discussion Question 2

    How would you as a writer, build goodwill with your readers? This is such a broad question, that there is no answer. Are you writing novels, columns in newspapers, nonfiction, comics, short stories, technical explanations? Please clarify your question and

    asked by Anonymous
  40. Chemistry

    How many grams of calcium carbonate are consumed per 500 g of sulfur (IV) oxide? in what reaction?

    asked by LaShanda
  41. chem

    list three examples of things you see and use every d day that apply gas properties I shall be happy to critique your thoughts.

    asked by Anonymous
  42. Science grade 3

    Does light always flow from light to dark places? T or False and explain. I say no becasue light shines and it does not flow Photons are emmitted and radiate in all directions until they are absorbed or reflected. So no is correct. They do not flow from

    asked by Marie
  43. French 1

    I have to rewrite the following sentences replacing the words in parentheses with object pronouns. Am I correct here? Thanks much!!!! 1 J’ai ( mes ingredients). J’ai me 2. Il regarde (toi et moi). Il le regarde 3. Michel comprend ( toi et mes amis

    asked by DANIELLE
  44. algebra

    Given f(x) = –4x – 4, find f(a – 4). F(x)= -4x- (a-4)-4 = -4a -4 -4 = a-12 am i getting this yet?

    asked by did I do this correct/
  45. Maths

    Hi How can we get an equation for a straight line cause I went in many websites and nothing suited me thankx The equation for a straight line is: a x + b y + c = 0

    asked by Welsh
  46. Algebra

    If some one can get me started, I should be able to graph this. MONTGOMERY COUNTY COMMUNITY COLLEGE MAT106 SUMMER, 2007 ASSIGNMENT #1 NAME______________________________ The Wellbuilt Company produces two types of wood chippers, Deluxe and Economy. The

    asked by Jason
  47. LiViNgEnViRoNmEnT

    A while back, I posted a question about mitosis and meiosis, but I didn't bookmark it and now I can't find it. That's why I'm asking again: How many chromosomes do you start out with and end with in meiosis? In mitosis, you start with one parent with 4

    asked by brie
  48. FrEnCh

    How would you say "...going to go..." Example: Je vais aller au terrain de sport. In english would I be saying, "I AM GOING TO GO to the athletic field"? I am confusing myself...please help clear this up...thanx `~)brie Thank you for using the Jiskha

    asked by brie
  49. Science

    A battery operated flashlight is turned on. What energy transformations take place and how does the amount of energy in the batteries compare to the total amount of light given? Hopefully the following sites will help you understand the principles of

    asked by Judith
  50. SCIENCE

    John Ryther developed a model aquaculture farm at the Woods Hole Oceanographic Institution that obtained nutrients from __________. I'm not certain whether the answer is sewage, bacteria or algae. Someone please help. His 1st raw ingredient is treated

    asked by Meg
  51. SCIENCE

    The mixing of sediment by benthic organisms is termed ________ I can't find it. Please help. Thanks http://en.wikipedia.org/wiki/Bioturbation

    asked by Meg
  52. Pork in World Religions

    Which religions ban the eating of pork? What is the reasoning behind each religion's decision not to eat pork? How has this effected the worldwide distribution of pork-related products?

    asked by Chris
  53. SCIENCE

    What was the largest oil spill by a tanker? I thought it was Castillo de Bellver, but when I typed this into the internet, it stated that it was Amoco Cadiz. Can anyone help? http://en.wikipedia.org/wiki/Oil_spill#Largest_oil_spills

    asked by Meg
  54. chem

    what celsius temperature corresponds to absoulte zero? Kelvin = C + 273.15. solve for C when K = 0. You should use the same name when posting separate questions. how did ya figure that one out?

    asked by Ann
  55. Science

    True or False? Please check my answers. Demesticated animals include rats,fish, mice. True? Ranch fishing is used for raising samon. True? Catfish, ostors, samon, crayfish, and trout are raised on farms. False? Catfish and samon are raised on farms. False?

    asked by Mack
  56. English

    http://www.lausd.k12.ca.us/lausd/resources/Literary.Terms.2.html#Irony http://www.tnellen.com/cybereng/lit_terms/irony.html Two really good explanations of the term "irony" -- with examples. =) Can Someone please explain to me the meening and diffence of

    asked by Writeacher