Questions Asked on
May 4, 2008

  1. Any chemistry lovers?

    A voltaic cell consists of Mn/Mn2+ and Cd/Cd2+ half-cells with the following initial concentrations: [Mn2+] = 0.090 M; [Cd2+] = 0.060 M. A)What is the intital Ecell? B)What is Ecell when [Cd2+} reaches .050M. C) What is [Mn2+] when Ecell reaches 0.055V? D)

    asked by stumped
  2. science

    four flasks each contain 100 milliliters of aqueous solutions equal concentrations at 25 degress C and 1 atm. the four flasks are KCL,CH3OH, Ba(OH)2, and CH3COOH. the question is Which solution had the lowest freezing point and explain answer

    asked by lisa
  3. History

    1)Why might the US have been concerned early in the war about China's attitude toward US involvenemt on the south side of vietnam? 2) What might have been the effect on the vietnam war if the border of Laos had been closed and N. Vietnam had not been able

    asked by MW
  4. chem

    determine the solubility of each of the following grams of solute per 100. g H2O a) NaNO3 at 10°C b) KNO3 at 60°C c) NaCL at 50°C

    asked by jerson
  5. math

    How many distinguishable permutations of letters are possible in the word? BASEBALL a. 20,160 b. 10,080 c. 5040 d. 40,320

    asked by Dana
  6. physics

    If you drop a stone into a well that is d = 128.0 m deep, how soon after you drop the stone will you hear it hit the bottom of the well?

    asked by tommy
  7. Chemistry again

    Two voltaic cells are to be joined so that one will run the other as an electrolytic cell. In the first cell, one half-cell has Au foil in 1.00M Au(NO3)3, and the other half-cell has a Cr bar in 1.00M Cr(NO3)3. In the second cell, one half-cell has a Co

    asked by stumped
  8. world history

    At the Yalta Conference, what was the promise that Stalin had made at the conference that he quickly broke once the war ended?

    asked by Sue
  9. Biology

    What conditions must be kept constant for a fair test for the amount of carbon dioxide against the rate of photosynthesis of pondweed

    asked by Zahra
  10. math

    Four accounting majors, two economics majors, and three marketing majors have interviewed for five different positions with a large company. Find the number of different ways that five of these could be hired. One accounting major, one economics major, and

    asked by Dana
  11. physics

    How many kWh of energy would be needed for brushing your teeth with an electric toothbrush daiy for the month of May? How much would it cost at $0.09 per kWh?

    asked by chantel
  12. Chemistry!!

    how would i do this problem?? Given this equation: 2SO2(g) + O2(g) ---> 2SO3(g) If 50.0 grams of S02 react, what is delta H for the reaction?? how would i do that??

    asked by Miley
  13. math

    Solve the problem. A shirt company has 4 designs that can be made with short or long sleeves. There are 5 color patterns available. How many different types of shirts are available from this company? a. 9 types b. 40 types c. 11 types d. 20 types

    asked by Dana
  14. physics

    a tuning fork produces a sound wave with a wavelength of 0.20 m and a velocity of 25.6 m/s. what is the frequency of the tuning fork?

    asked by chantel
  15. art history

    without useing a museum art become a investigative journalist using the internet find works of art that is not conventionally considered to be art.Art that will make for captivating news articles

    asked by Sherita
  16. chemistry

    1 what's the Tyndall Effect and whats one example of this effect? 2) Given an unknown mixture consisting of two or more substances, how could we determine whether that mixture is a true solution, a colloid, or a suspension? 3) why is a suspension

    asked by jerson
  17. Physics

    Original Question: Neutral metal sphere A, of mass 0.10kg, hangs from an insulating wire 2.0m long. An identical metal sphere B, with charge -q is brought into contact with sphere A. Sphere A goes 12 degrees away from Sphere B. Calculate the initial charge

    asked by Alex
  18. Geometry

    Within an orthonormal system consider points A(1,4) B(5,1) C(4,8) (a)Calculate the angle ABC (b)Show that 3x+4y-19=0 is an equation for line L which passes through A and B (c)Find a vector equation for line L (d)(i)give an equation for the circle with the

    asked by Anonymous
  19. math/algebra

    what is the fibonacci sequence???

    asked by Miley
  20. biology

    why do plants of arid environments have fewer smaller vessels than plants of moist environments?

    asked by natash
  21. math

    the length of a playground id 6 meters less than 3 times its width. If the perimeter of the playground is 100 meters what is the lenght and width of the area to the nearest hundredth meter?

    asked by Angie
  22. Probability

    1.John puts the letters of the word FOOTFEST in 8 different envelopes. Paul chooses an envelope at random. (a)(i)Calculate the probability that Paul chooses an envelope containg letter O (1/8 ?) (ii)Calculate the probability tthat Paul doesn't chooses an

    asked by Anonymous
  23. homework

    i have to make a small invention

    asked by Anonymous
  24. math

    what might you have if you don't feel well

    asked by Ashley
  25. Epidemiology

    Can some one please check this for me. I am not sure if I am on the right track. Complete the problem below. Disease X is one that often results in severe illness, but never is fatal. On March 21, 1990, 30 students developed disease X among all students in

    asked by DANIELLE
  26. Compensation and Benefits

    I need help with these question. I am not a 100% sure of my answers. Can someone please help. Thanks 1. All but which one of the following are major reasons for an employee to defer income? a) save for the future b) permit saving to accumulate interest tax

    asked by Ann
  27. pre-calculus

    Hi I have this question regarding ellipses. the equation is.. x^2/25 + y^2/169= 1 it asks for major and minor axis (i got 10 and 26) x-intercept y-intercept ((5,0)(0,13)) foci (-12,0) points of intersection with line y= 1-2x graph graph the equation of the

    asked by samantha
  28. Physics

    Original Question: Neutral metal sphere A, of mass 0.10kg, hangs from an insulating wire 2.0m long. An identical metal sphere B, with charge -q is brought into contact with sphere A. Sphere A goes 12 degrees away from Sphere B. Calculate the initial charge

    asked by Alex
  29. math

    To win the World Series, a baseball team must win 4 games out of a maximum of 7 games. To solve the problem, list the possible arrangements of losses and wins. How many ways are there of winning the World Series in exactly 6 games if the winning team wins

    asked by Dana
  30. Chemistry

    How do i write a good discussion/conclusion for a lab report.

    asked by LT
  31. english

    where can i find a translation to another language or help to do a tranlation to another language of marc antony's speech in julius caesar Act 3 sc.2

    asked by laura
  32. Probability

    1.John puts the letters of the word FOOTFEST in 8 different envelopes. Paul chooses an envelope at random. (a)(i)Calculate the probability that Paul chooses an envelope containg letter O (1/8 ?) (ii)Calculate the probability tthat Paul doesn't chooses an

    asked by Anonymous
  33. math-radical equations

    Here's one of the questions I have problems with: cube root of (x+2)=6th root of (9x+10) A. -1, 6 B. [-13 +/- sqrt(193)]/2 C. 1, -6 D. [13 +/- sqrt(145)]/2 Please explain how to solve this. Should you cube both sides, or raise both to the 6th? and I get

    asked by Jennifer
  34. Algebra

    Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet? (A) x squared - 8x + 240 = 0 (B) 2x(2x-8x+16)=240 (C) x squared + 8x + 240 = 0 (D) x squared + 8x - 240

    asked by Anonymous
  35. chemistry

    Calculate the pH of a [Acid] M aqueous solution of each of the hydrochloric and acetic acids: Acid [Acid] pH HCl 0.10 HC2H3O2 0.10 I know that HCl is just -log(0.10) which is 1, but can't get the pH of HC2H3O2.

    asked by Renee
  36. algebra II

    14. Solve the inquality -3(r-11) + 15 equal or greater than 9. 15.Solve the inequality: -2 < 4z = 10 lessthan or equal to 12. 16. Solve the inequality 2x-5 less than or equal to 10 or 33 - 4x < 5 17. Solve the inequality 3 | m -4 | > 6

    asked by PJ.
  37. Biology - Heart Rate/Blood Pressure

    Hi, can someone help me with these questions? Why is it that athletes have to exercise harder/longer to get max heart rate than people that aren't physically fit? Why does smoking cause rise in blood pressure? (Does it have to do with less oxygen getting

    asked by Glen
  38. health

    some sdvice on an essay I have to do on child development.How social skills are developed in children.What is self-esteem and self-concept and how are these concepts developed in children?.The importance of social relationships.Effects on self-esteem and

    asked by Bernadette
  39. English

    Thesis statement: Networking is the most effective way in making your business grow faster. is it a good thesis statement? if not pls. can you make me another one.. thanks

    asked by james
  40. Chemistry!!

    A serving of potato chips is crushed and burned in a clorimeter. the calorimeter has 2000 grams of water in it and the initail temperature is 21.0 degrees celsius. If the water's temperature increases to 29.0 degrees celsius, how many calories

    asked by Miley
  41. math-radical equations

    Here's one of the questions I have problems with: cube root of (x+2)=6th root of (9x+10) A. -1, 6 B. [-13 +/- sqrt(193)]/2 C. 1, -6 D. [13 +/- sqrt(145)]/2 Please explain how to solve this. Should you cube both sides, or raise both to the 6th? and I get

    asked by Jennifer
  42. physics

    A television uses a current of 1.5A at 120V. The television is used 2 hours. Calculate the power used in KW and the energy used in kWh.

    asked by chantel
  43. Biology

    How do the reproductive and hormonal systems of the human body interact and support each other?

    asked by Bobby
  44. world hisrory

    What British commander finally stopped Rommel advance across North Africa at the Battle of El Alamein in 1942, driving the Axis forces across Libya into Tunisia?

    asked by Sue
  45. math

    Evaluate the factorial. 5!

    asked by Dana
  46. physics

    a fork lift picks up a crate using 400 N. it moves the crate 20 meters in 50 seconds. how much power is used?

    asked by chantel
  47. Trig

    What is sin^2 - cos^2 x/ 1-2cos^2 x, using the identities.

    asked by Mary
  48. Maths - Series

    1(a)Glasses are piled upon each other to form a tower.The rows are numbered,beginning with the top row.There is a single glass in the top row,two glasses in row number 2,3 in 3;etc.This continues to the bottom of the tower.A tower is needed which uses a

    asked by Anonymous
  49. Chemistry!!

    A 100.0 g sample of ethanol at 25.0 degrees celsius is heated and boiled completely to vapor at its boiling point. How much heat does it absorb? i did.... q=100.0 *2.44*43.5=10,614 J q=100.0*2.44*53.5=13,054. then i added the two q's together and i got

    asked by Miley
  50. Science

    How do telescopes work?

    asked by Anonymous
  51. Math

    2(a)Consider the arithmetic progression with terms A3=-2 and A12=23. Find the sum of A1+......+A40 (can do) (b)In 1800 the population of England was 8 million. The economist Malthus (1766-1834) produced a hypothesis, suggesting:-that the population of

    asked by Anonymous
  52. Math

    How do you do questions like this: -9y-12=93 I need to know the steps as well.

    asked by Alyssa
  53. science(chem)

    Commercial hydrazine is sold as a 64% solution. Using that as your starting material, how would you prepare a 5% solution of hydrazine? well if it is sold as 64% solution would that mean that it has 64g of hydrazine per 100ml of solvent(water)? and what

    asked by ~christina~
  54. Functions

    (a)Consider the function: f(x)=(7x+13)/(13x-1) (i)Calculate the exact values of the coordinates of the points of intersection of the graph of this function with the coordinate axes. (ii)Calculate the equations of the asymptotes (b)The line h(x)=ax+b passes

    asked by Anonymous
  55. math

    8(5-n)=2n

    asked by christine
  56. Maths

    In an orthonormal system, you're given the following: Point P(1,2) Lina a=cartesian eqn:4x-3y+6=0 Line b=parametric eqns:x=-5+3& y=-& (real n°) Circle z=cartesian eqn:x²+y²-2x-3=0 (a)Calculate the angle between lines a an b (b)Calculate the coordinates

    asked by Anonymous
  57. series

    2(a)Consider the arithmetic progression with terms A3=-2 and A12=23. Find the sum of A1+......+A40 (can do) (b)In 1800 the population of England was 8 million. The economist Malthus (1766-1834) produced a hypothesis, suggesting:-that the population of

    asked by Anonymous
  58. physics

    A microwave oven uses 1000W of power.The voltage source is 120V. What is the current flowing through the microwave?

    asked by chantel
  59. Algebra II

    1. Find the value of 5 + 8 x 2 divided by 4 - 11 2. Evaluate (a-y)^2 + 2y^3, if a =2 and y= -3 3. Evaluate -|a-3b|, if a=-2 and b = 6 4. The formula A= 180 (n-20 OVER N relates the measure A of an interior angle of a regular polygon to the number of sides.

    asked by PJ.
  60. Physics

    In calculating the force of gravity between two objects, if the mass of one objects increased by 4 and the other by 2, how many times would the force of gravity increase? Ok well Im horrible at physics but the way I understood it was that you would take 4

    asked by Lynn
  61. statistics

    evaluate the combination: there is a set of parentheses, 15 on top of a 15- it would look like this, just one set of parentheses (15) (15) i am just stuck

    asked by Dana
  62. world history

    In 1988, President Ronald Regan signed legislation which apologized stated that government action were based on "raced prejudice, war hysteria and a failure of political leader." What is the term for the $1.6 billions in payments that were later disbursed

    asked by Sue
  63. grade 5 math

    the grade 5 class decided to collect cans of food to donate to the food bank .After the 1st week ,they had collected 8 cans . The next week they collected 11 more . By the 3 rd week they had 31 cans Following this pattern how long will it take for them to

    asked by Jeff
  64. math

    Given a group of students: or count the different ways of choosing the following officers or representatives for student congress. Assume that no one can hold more than one office. A male president and three representatives a. 72 b. 9 c. 6 d. 3

    asked by Dana
  65. research writing

    how do you know when sources are reliable?

    asked by Jeff
  66. Chemistry

    What is the pH of the solution created by combining 1.30 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? This is how I would go about solving the problem, but could you tell me where I went wrong? First I would find the number of mols of OH

    asked by Marie
  67. Maths - Sets

    While I was doing some exercises on sets A question accured " M = {a,e,i,o,u} a) how many subsets are there of M ? When I did it was two , because a subset from my knowledge is that all of the elements in the set are there with the empty set The answer was

    asked by Veronica
  68. chemistry

    What is the pH value if you take into account that the 8.00 mL of 0.10 M HCl was first diluted with 100 mL of water and titrated with 1.60 mL of the 0.10 M NaOH i know that the concentration of HCl after diluting is .008M but than im not sure how to

    asked by Jason
  69. Economics 101

    Hey guys my Econ final is on Tuesday and I could use some help. These are 4 example questions true/false with explanation needed. 1. A monopolist will produce less and charge a higher price than a perfectly competitive industry. 2. Regardless of the type

    asked by Zach
  70. English

    I am writing a story about a girl who is living a stable life that she has created for herself. However, her biological sends her a letter apologizing for putting her up for adoption and telling she wants to see her. She is very confused. My last paragraph

    asked by bill
  71. Statistics

    If I have 4 standard deviations, how do I find the SD of the distributions of all of them? They are: .15 .16 .14 .15

    asked by MW
  72. Adv. Math

    How do you do these problems... 1) y/2+5>8 2) -4z+8

    asked by Kenya
  73. ENGLISH

    I CANT FIGURE OUT THIS WORD....IT MEANS CAUSING GREAT MISFORTUNE amtsoacausli

    asked by TIFFANY
  74. math

    4x-y+z=-5 2x+2y+3z=10 5x-2y+6z=1 solving x,y,z with Matrices

    asked by yumei
  75. Eth 125

    Consider racial imbalances in education, the economy, family life, housing, criminal justice, health care, and politics, of these societal challenges facing modern African Americans, which do you think are most difficult to overcome, and why?

    asked by Sam
  76. Algebra Repost

    Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet? (A) x squared - 8x + 240 = 0 (B) 2x(2x-8x+16)=240 (C) x squared + 8x + 240 = 0 (D) x squared + 8x - 240

    asked by Anonymous
  77. world history

    What is the name of the battle fought on the Eastern Front in the Soviet Union between August 1942 and February 1943 that evolved into a bitter street-by-street, house-by-house struggle between the German and soviet armies?

    asked by Sue
  78. math

    Evaluate the permutation. P(5, 5) a. 1 b. 120 c. 0 d. 4

    asked by Dana
  79. world history

    At the end of World War I the Allieds had established the League of Nations as an international organization designed to ensure global peace, but it had failed miserably due to the fact that it did not possess the military force necessary to enforce any of

    asked by Sue
  80. crit thinking

    Identify any areas that are vague or ambiguous. If none exist, explain how you determined this. Identify and name any rhetorical devices used by the author. If none exist, explain how you determined this. Author Jeff Lindsay is no fan of horror novels,

    asked by guzy
  81. math

    Evaluate the combination. its in parentheses with the ten on top, and the 6 on the bottom, they are both in the same set of parentheses (10) (6 ) a. 5040 b. 210 c. 75,600 d. 48

    asked by Dana
  82. IT205

    I have a paper due tomorrow, well on Sunday may 4th of 2008. It needs to be in APA format and it should have 1400-1700 words. The guidelines is on the Bead Bar and it's System Development Plan. Below is an essay I have started on and I would like to have

    asked by Guest
  83. Critical Thinking

    Since it is the very nature of terrorism not only to cause immediate damage but also to strike fear in the hearts of the population under attack, one might say that the terrorist were extraordinarily successful, not just as a result of their own efforts

    asked by Kay
  84. a&p

    As sebum secretion increases, the skins permeability to water will?

    asked by sam
  85. a&p

    the amount of damaged epithelial tissue would most likely be greates in what type of fracture?

    asked by sam
  86. a&p

    If an astronaut returned to earth after a 180 day stay in a weightless space station he would have a decrease in bone mass? true or false?

    asked by sam
  87. Biology12

    If the process of ion attraction within the nephron is not functioning properly what would you expect to find in the blood and urine? Thanks!

    asked by Montana
  88. Urgent Help In Accounting

    January 1, 2008 Timber Company incorporated in the State of Pennsylvania. Initially it issued stock to three stockholders, Bob, Jim, and Frank. Each paid $50,000 (50,000 shares-- $.25 par value per share) for the stock. The Company¡¯s Articles of

    asked by Anonymous
  89. math review question

    The interest rate on an equity line of credit was 6 3/4 % last year. This year the interest rate is 9 1/2 %. How many percentage points has the interest rate increased?

    asked by Ree
  90. scienc

    the enivronment that is most favorable to an organism,s survival is its range of tolerance optimum conditions preferred environment best conditions

    asked by bertha
  91. math

    x2-x=30

    asked by Carmen
  92. Science

    If the process of ion attraction within the nephron is not functioning properly what would you expect to find in the blood and urine?

    asked by Miley!
  93. home economics

    several factors people considered before investing in any financial instrument

    asked by rosa
  94. home 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 tina
  95. Statistics

    Mortgage Rates In 2001, the mean contract interest rate for a conventional 30-year first loan for the purchase of a single-family home was 6.3 percent, according to the U.S. Federal Housing Board.A real estate agent believes that interest rates are lower

    asked by Curtis
  96. jj pearce

    8(5-n)=2n

    asked by christine
  97. history

    Do you culturally identify more with the ethnic group you examined?

    asked by sharen
  98. Chemistry

    How do I find the percent composition of H2O: 20.14grams C2O4: 51.64grams Fe 3+: 11.34grams K^+: 15.06 grams and the empirical formula with these numbers

    asked by LT
  99. Algebra

    How can I transform the equation 4=x-y into one that begins with "y="? Would I subtract x from both sides to get -x+4=-y? This doesn't look right at all. Or would I add y to both sides and then subtract 4 to get y=x-4? This way seems more correct to me.

    asked by Anonymous
  100. Algebra

    Calculate the relative error to the nearest tenth, compared to the actual measurements, given the following swimming pool measurements: Mr. Joe's measurements: 35ft x 17.5ft Actual measurements: 35ft x 22.75ft (A) 0.1 (B) 0.2 (C) 0.3 (D) 0.4 I got choice

    asked by Anonymous
  101. physics

    what is magnesium?

    asked by chantel
  102. chem

    why does the solubility of ytterbium sulfate decrease with temperature?

    asked by Anonymous
  103. Chem

    Which of the following has the largest molar mass? A. Water B. isopropanol C. ethanol

    asked by Anonymous
  104. Chemistry

    Dr. Bob ok well here is what i have gotten so far: on the problem H2O: 1.118 mol C2O4: .58681 mol Fe 3+: .2025 mol K^+: .3862 mol That is what ive gotten doing 20.14 g(1 mol / 18 g) = 1.118 mol and so on with the rest of them Did i do that wrong

    asked by LT
  105. Economics

    what is sales tax? and what is it used for?

    asked by Lane
  106. Government

    Which amendment is the direct result of a spiritual awakening?

    asked by Will
  107. Biology-need source

    Hey I need a source that tells me the effects of seismonsastic movements on the growth of plants. Thanks!

    asked by Matt
  108. english 2

    is cassius honestly opposed to tyranny?

    asked by the tradgedy of julius caeser
  109. English

    rules of punctuation

    asked by Anonymous
  110. Algebra Repost

    How can I transform the equation 4=x-y into one that begins with "y="? Would I subtract x from both sides to get -x+4=-y? This doesn't look right at all. Or would I add y to both sides and then subtract 4 to get y=x-4? This way seems more correct to me.

    asked by Anonymous
  111. math

    Evaluate the permutation. P(7, 4) a. 1 b. 210 c. 7 d. 840

    asked by Dana
  112. world history

    Who was the U.S. general chosen to be the supreme commander of the Allied invasion forces that would strike into France from Great Britain?

    asked by Sue
  113. physics

    what is a joule?

    asked by chantel
  114. Chemisty

    Ok this is what i got for the grams part now.... Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 = 20.51% %C2O4 = (51.64/98.18)*100 = 52.60% % Fe 3+ = (11.34/98.15) * 100= 11.55% % K + = (15.06/98.15) * 100 = 15.43 % 20.51 g

    asked by LT
  115. world history

    What did the western allies build in the former Axis countries during a period of allied military occupation in order to protect the rights of all citizens?

    asked by Sue
  116. Adv. Math

    How do you do these problems... 1) y/2+5>8 2) -4z+8

    asked by Kenya
  117. engl - citing

    In my indroductory paragraph I talk about a certain individual. I mention her current profession etc. In the next sentence I give a quote by her. How do I cite that? Should I give her name and the page number? Or just the page number? Or do I even need to

    asked by jamie
  118. History

    The rise of industrialization radically changed life for people in the West in the nineteenth and twentieth centuries. Imagine that you are a person who grew up in a rural English farm village in the mid nineteenth century, but who will spend your working

    asked by Sara
  119. Math

    what is one half of 40 cm2

    asked by Jack
  120. chemistry

    how are molecules and poly atomic ions similar?

    asked by Chelsea
  121. Biology (Psychology)

    What could you infer/say if a person could distinguish the difference between regular and low fat foods? It's for my science fair project. Like, besdies saying that they have an extraordinary sense of taste... >.> And make it about the individual; not as a

    asked by Confused