Questions Asked on
May 3, 2010

  1. Chemistry 11th Grade

    If a certain oxide of nitrogen weighing 0.11g gives 56 ml of nitrogen and another oxide of nitrogen weighing 0.15 g gives the same volume of nitrogen (both at STP), show that these results support the law of multiple proportions.

    asked by Akashdeep
  2. English

    1. The problem is so difficult that I cannot solve it. 2. The problem is too difficult for me to solve. 3. It is too difficult for me to solve the problem. (Are the three sentences the same? Do they come from the same structure? Can we omit 'that' in

    asked by rfvv
  3. Chemistry

    Which solution will have the greatest electrical conductivity? A. 0.50MHCl B. 0.10MRbOH C. 0.50MK3PO4 D. 2.0MC6H12O6 I thought the answer would be B, but it is C. Is it not B because the Ka is too small? Otherwise, C is has the smallest Ka.

    asked by sh
  4. CHEMISTRY

    A 6.6 × 10–4 M solution of MnSO4 is gradually made more basic by adding NaOH. At what pH will manganese(II) hydroxide begin to precipitate? For Mn(OH)2, Ksp = 2.0 × 10–13.

    asked by Anonymous
  5. grammar

    what grammatical name is given to the expression what made her choose me.

    asked by excellent
  6. Organic Chemistry

    The following reaction would produce a(n) __________. R-OH + R'COOH →

    asked by Tom
  7. college physics

    A 280 g wood block is firmly attached to a very light horizontal spring, as shown in the figure . The block can slide along a table where the coefficient of friction is 0.30. A force of 22 N compresses the spring 18 cm. If the spring is released from this

    asked by peyton
  8. Chemistry 11th Grade

    Nitrogen forms five compounds with oxygen in which 1.0 g of nitrogen combines with 0.572,1.14,1.73,2.28 and 2.85 g of oxygen respectively. Show that these figures agree with law of multiple proportion.

    asked by Akashdeep
  9. chemistry

    3. Use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO₂ is also a product of the decomposition. CuCo3*Cu9OH)2 -----> 2Cuo+Co2+H2O 0.004522431 moles of malachite

    asked by Sally
  10. math

    A ladder 14 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does

    asked by peter
  11. English

    Which is an example of verbal irony as spoken by Antigone? a. "You have yourself to consider, after all." b. "You must decide whether you will help me or not." c. ". . . and if I must die, / I say that this crime is holy . . ." d. ". . . if it means death,

    asked by Alyssa
  12. Trig

    Tan theta 12/5 ,pi

    asked by Stacey grahaM
  13. English

    Caesar disregards the omens for all of the following reasons except A. he does not trust the augurers. B. he does not want to appear cowardly. C. he feels fate is inescapable. D. he feels invincible. help!

    asked by Alyssa
  14. chemistry

    What is the concentration of silver(I) ion in a saturated solution of silver(I) carbonate containing 0.0092 M Na2CO3? For Ag2CO3, Ksp = 8.6 × 10–12.

    asked by Anonymous
  15. Chemistry

    a) moles of malachite in 1g: 1g / (221.12g/mol) = .004522 mol (b) moles of CuO produced: .72g / (79.55g/mol) = .009051 mol (c) ratio of moles of CuO produced per moles of malachite decomposed: 2CuO/CuCO3(OH)2 2*79.5/221.1 = 0.719 3. Use the mole ratio of

    asked by Sally
  16. calculus

    A ladder 14 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does

    asked by peter
  17. Math

    A polynomial function with rational coefficients has the following zeros. Find all additional zeros. 2, -2 + ã10

    asked by Christopher
  18. Spanish

    What is this in Spanish: You get dressed at 8 o'clock. Te vistes a las ocho. ? Is this the correct translation? If not, then what is the correct translation?

    asked by Aly
  19. chemistry

    What is the change in entropy when 0.290 g of silicon is burned in excess oxygen to yield silicon dioxide at 298 K? Si(s) + O2(g) -> SiO2(s); ÄS° = –182.4 J/K at 298 K

    asked by Anonymous
  20. Chemistry

    An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.5 Angstrom, and the density of the crystal is 7.39g/cm^3. Calculate the atomic weight of the element. A= ? g/mol

    asked by Anna
  21. Physics

    an 80 kg physics student is riding the cajun cliffhanger. this ride had a diameter of 8.0m (u:0.06)the ride produces enough centripetal force to suspend a student. 1.what is the force of friction to keep the student suspended? 2.what normal force is

    asked by Maira
  22. economics (micro)

    2. In the table below, assume a monopsonist has the marginal-revenue-product schedule for a particular type of labor given in columns 1 and 2 and that the supply schedule for labor is that given in columns 1 and 3. (1) (2) (3) (4) (5) Number of MRP Wage

    asked by Tom
  23. Rock Hill

    What will the stopping distance be for a 3,000-kg car if -3,000 N of force are applied when the car is traveling 10 m/s?

    asked by yolanda
  24. chemistry

    In the redox reaction: 4NH3(g)+3O2(g)-->2N2(g)+6H2O(l) the number of moles of electrons transferred is...

    asked by Metia
  25. statistics

    Find the number of words formed by permuting all the letters of the word INDEPENDENCE such that the E's do not come together.

    asked by guitarman
  26. chemistry

    Calculate the cell potential of a cell operating with the following reaction at 25°C, in which [Cr2O72‾ ] = 0.030 M, [I ‾ ] = 0.020, M, [Cr3+ ] = 0.20 M, and [H+ ] = 0.60 M. Cr2O72-(aq) + 6 I ‾(aq) + 14 H+(aq) → 2Cr3+(aq) + 3 I2(s) + 7 H2O(l)

    asked by Long
  27. math

    Find the coordinates of the centroid of the regions bounded by the graphs of: i)y=x2+1,x=0,x=1 and y=0 ii)y+x2=6 and y+2x-3=0

    asked by islam
  28. Chem

    If a sample of the radioactive nuclide 139Cs has an activity of 0.0730 Ci, what is the instantaneous rate of decomposition of 139Cs in terms of grams per second? The mass of 139Cs is 138.9134 amu. (1 Ci = 3.700 × 1010 disintegrations/s, 1 amu = 1.66054 ×

    asked by Alicea
  29. 5th grade maths

    Choose a reasonable metric unit to complete each sentence and how did you do it. 1. 1 mile is about 1.6---- 2. 1 yard is about 1------ Thanks

    asked by MONA
  30. Gen. Chemistry

    From these two reactions at 298 K, V2O3(s) + 3CO(g) -> 2V(s) + 3CO2(g); DH° = 369.8 kJ; DS° = 8.3 J/K V2O5(s) + 2CO(g) -> V2O3(s) + 2CO2(g); DH° = –234.2 kJ; DS° = 0.2 J/K calculate DG° for the following at 298 K: 2V(s) + 5CO2(g) -> V2O5(s) + 5CO(g)

    asked by Anonymous
  31. Geometry

    I need to find the value of p in a right triangular prism when the surface area is 457.25. "P" is the distance between the bases The triangleular base is 9.9 x 6.2 choices are: 16.65 8.75 14.25 9.45 Thank you-could you explain how you got the answer

    asked by LynAnne
  32. Math

    "The probability of getting heads on a biased coin is 1/3. Sammy tosses the coin 3 times. Find the probability of getting two heads and one tail". I thought that all you have to do is: (1/3)(1/3)(2/3) It makes sense to me, but it's not right...

    asked by Stuck
  33. general physics

    A window washer pulls herself upward using the bucket-pulley apparatus shown in the figure . The mass of the person plus the bucket is 63 kg. How hard must she pull downward to raise herself slowly at constant speed?

    asked by Anonymous
  34. equations trig

    2cos^2x-3sinx=0

    asked by LiNnda
  35. Health (Anonymous)

    Could you be a little more specific as to which ones I missed so I can research them further. Thanks.

    asked by B B
  36. social studies

    what tools did egyptians use to bulid pyramids

    asked by james
  37. equations trig

    8sin^2x+sinxcosx+cos^2x=4

    asked by LiNnda
  38. Chemistry

    What is the highest number of bonds that one Carbon atom can make? 4 3 2 1 I'm thinking four but I probably am wrong-I'm not great at chemistry but I'm trying Thank you

    asked by Sara
  39. chemistry

    The amount of lactic acid, HC3H5O3, produced in a sample of muscle tissue was analyzed by reaction with hydroxide ion. Hydroxide ion was produced in the sample mixture by electrolysis. The cathode reaction is given below. 2 H2O(l) + 2 e ‾ → H2(g) + 2

    asked by Long
  40. Chemistry

    Which compound is a saturated hydrocarbon? ethane ethene ethyne ethanol Thanks for any help you can give

    asked by Jillian
  41. chemistry

    Given: Cr3+(aq) + 3e¨C  Cr(s); E¡ã = ¨C0.74 V Pb2+(aq) + 2e¨C  Pb(s); E¡ã = ¨C0.13 V What is the standard cell potential for the following reaction? 2Cr(s) + 3Pb2+(aq) ¡ú 3Pb(s) + 2Cr3+(aq)

    asked by Anonymous
  42. Math

    Two pieces of cake weigh as much as one apple and one cherry. One apple weighs as much as five cherries and one piece of cake. How many cherries weigh as much as one apple?

    asked by Mia
  43. websiteaddress

    One of my favorite home pages is coming up 404 URL Not Found on this server and it has never done that before. Could an Internet savvy person point out why this could be happening? Could just this particular place be experiencing technical difficulties?

    asked by SurferDude
  44. Physics for Life science

    1. A block of mass m=100kg rests on a level ground. With what force, parallel to the ground, must you push the block so that it is just ready to start sliding? The coefficient of static friction between the block and the ground is 0.40.

    asked by TangenT
  45. CHEMISTRY

    What substances will increase the molar solubility of nickel(II) phosphate in a saturated solution?

    asked by Anonymous
  46. chemistry

    What is DG° at 298 K for the following equilibrium? Ag+(aq) + 2NH3(aq)  Ag(NH3)2+(aq); Kf = 1.7 × 107 at 298 K

    asked by Anonymous
  47. foundations of business

    Consider a local business whose services you frequently use. What are the main components of this company's business model? describe the three components of the business system that comprise the local business you selected.

    asked by dana
  48. algebra

    for the system of inequalities y >= 2x - 1 and y = 2x - 1, but not y

    asked by tim
  49. Chemistry

    2H20(l) = 2H2 (g) +O2 (g) For the above, if 1.50 mg of water is decomposed, what mass of hydrogen is procduced? (1 Mg=10^6g=1 metric ton)? What is the answer and what is the best way to solve this?

    asked by Carli
  50. chemistry

    What is the difference between a strong electrolyte and a weak electrolyte? Explain what makes an electrolytic solution strong or weak. Do you look at the pH to determine between a strong electrolyte and a weak one?

    asked by Anonymous
  51. college

    . S-35 (t1/2 = 87.4 d) is used in cancer research. The biological half-life in the human body is 90 days. What is the effective half-life of S-35?

    asked by kurt
  52. physics

    Imagine an airplane flying under a cloud during a thunderstorm.Do the passengers get electrocuted? Explain why or why not. Should the airplane's wheels be insulators or conductors? Explain why.

    asked by Sandhya
  53. 12th grade Project work

    How can I prepare a beautifully decorated hand made file on a project work for school?

    asked by Vishesh
  54. civics

    why would a person want to go to federal court instead of state court?

    asked by Landon
  55. college physics

    How fast (in rpm) must a centrifuge rotate if a particle 9.50 cm from the axis of rotation is to experience an acceleration of 113000 g's? Need help please.

    asked by peyton
  56. office procedure

    you can place overseas calls directly if your company has the proper connection for

    asked by peg
  57. English

    Can you please help me rephrase a sentence taken from Virginia Woolf's Mrs.Dalloway? "And there the motor car stood, with drawn blinds, and upon them a curious pattern like a tree, Septimus thought, and this gradual drawing together of everything to one

    asked by Franco
  58. algebra

    quan is shopping. he can buy 2 pants and 1 shirt for $79.85 (before tax is added). he can but 1 pair of pants and 2 shirts for $69.85 (before tax is added). how much does a shirt cost? a)$29.95 b)$10.50 c)$19.95 d)$5.50 and the answer that i picked is b

    asked by wan
  59. radicals

    I don't know how to do this type of problem: 6 radical 3(5 radical6-3 radical 10 ) I need help fast

    asked by Ales`
  60. college physics

    A 915 kg two-stage rocket is traveling at a speed of 5.50×10^3 m/s with respect to Earth when a pre-designed explosion separates the rocket into two sections of equal mass that then move at a speed of 4.00×10^3 m/s relative to each other along the

    asked by peyton
  61. Science

    The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate can reach 1200 beats per minute. Predict its lifespan and justify your explanation.

    asked by Dee
  62. science/math

    sandy made a drawing of a rec tangle to show the area of the library. what is the area ,in square yards of the library? what stands for (1) square yard

    asked by johnathan
  63. Science

    Who should share the mineral profits from the Pacific Ocean? From The Alantic Ocean?

    asked by Kristine
  64. social studies

    what is canada's gdp and what is japan's gdp ? please answer this question. thank you:) ^-^ :) :) ^-^

    asked by binah
  65. Algebra II

    If Peter received grades of 88,83,75,and 80 on four tests in English, what is the minimum grade he has to score on the fifth test to have an average of at least 85 for the course?

    asked by bev
  66. math sci

    how can 36 stand for 1 square yard

    asked by johnathan
  67. businee

    Explain how socio-cultural differences create problems for Walt Disney in opening parks overseas

    asked by amy
  68. Science/ Math

    The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate can reach 1200 beats per minute. Predict its lifespan and justify your explanation.

    asked by Dee
  69. american history

    what principle was ocerturned in Brown v Board of education?

    asked by cornelius
  70. 7th grade

    The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate can reach 1200 beats per minute. Predict its lifespan and justify your explanation.

    asked by Dee
  71. Chemistry

    Is it possible to determine the Ka of a weak acid at points other than the halfway point of a titration? Explain.

    asked by Andrew
  72. machanics\

    can u tell me what formula i should be using to answer this question? If a stone falls past a bird on a ledge moving at 4 m/s, how fast will the stone be movingjust before it hits the ground below 9 seconds later? A. 92.2 m/s B. 48.2 m/s C. 352.8 m/s D. 36

    asked by me
  73. marketing

    The process of naming broad product-markets and then segmenting them in order to select target markets and develop suitable marketing mixes is called:

    asked by pri
  74. Math

    When trying to solve arctan(sqrt 567.2 / -459.6) my answer was -2.96. My teacher said that i handled the radical wrong. She said I have to square both numbers, then add them, and then find the square root. I am confused because you cannot take the square

    asked by Abbey(Please help)
  75. statistics

    a.A normal distribution is any distribution that is not unusual

    asked by Mercede
  76. busines

    Ethically, would it be fair to pay U.S. employees who are relocated overseas a different wage than local employees receive? Please justify your position

    asked by amy
  77. business

    Is it a good idea to open American fast food restaurants in Disney parks overseas selling the same kind of food sold in U.S. parks? Why or why not?

    asked by amy
  78. Chemistry [Science]

    Oh gosh... I need help, with like everything... [Show all work] Aluminum nitrite & ammonium chloride react to form aluminum chloride, nitrogen gas and water. What amount of aluminum chloride is present after 43g of ammonium chloride have reacted

    asked by Nikki
  79. Chemistry

    A characteristic of benzene is which of the following? C6H6 aromatic planar all of the above I think it is all of the above but I'm not sure- Thank you for the assistance-

    asked by Tim
  80. DIVERSITY IN THE CLASSROOM

    Create a 12- to 15-slide Microsoft® PowerPoint® presentation addressing the following points: o Explain ways to debunk three of the five gender misconceptions listed above based on the results of the peer discussion and your own University Library

    asked by scooby
  81. algebra II-URGENT

    the perimeter of a rectangular yard is 270 feet. If its length is 25 feet greater than its width what are the dimensions of the yard

    asked by bev
  82. physics

    in an adiabatic process from A to B, do A and B have same temperature?

    asked by eng
  83. algebra

    Which point is a solution of the inequality 1/2x - 4y

    asked by letes
  84. Chem

    Which of the following substances will increase the molar solubility of nickel(II) phosphate in a saturated solution? Na3PO4 HNO3 NH4Cl (NH4)3PO4 KOH

    asked by Anonymous
  85. physics

    A spherical convex mirror has a radius of curvature of magnitude of 20cm. At what distance from the mirror should an object be placed to obtain an image that is virtual, four times smaller and upright.

    asked by jane
  86. Math; Pre -algebra

    How many 3 letter arrangements can you make while making the first and the third letter one of the 21 constants and the middle letter one of the 5 vowels {a,e,i,o,u} . {two such arrangments to use are KOM and XAX?

    asked by dora
  87. Chemistry

    If you needed 2.50g of CuSO4 for a reaction but only had CuSO4 * 5H2O available, how many g would you need to use to get the same number of moles of CuSO4?

    asked by Danny
  88. math

    Find a rule. Write the rule as an equation. Input X 12, 47, 9 Output Y 32, 67, 29 Rule:____________ Equation:_______________

    asked by Levi
  89. Math

    Write an expression for the most apparent nth term of the sequence. Assume n begins with 1. 3,7,11,15,19 My answer was an= 3 +4n but this wrong.

    asked by Abbey(Please help)
  90. 10th grade

    x squared-13x+36/x-9 equals what dividing polynomials

    asked by darion
  91. math

    of 28 and a quotient of 8?

    asked by erin
  92. trig

    Can someone please help me solve this equation? Solve the equation in the interval [0°, 360°). csc θ = 1 + cot θ

    asked by Dee
  93. Business Statistics

    For H0: ¦Ð ¡Ü .60 versus H1: ¦Ð > .60, ¦Á = .05, x = 56, n = 80 how do i find the test statistic and p-value?

    asked by John
  94. Chemistry

    A characteristic of benzene is: C6H6 aromatic planar all of the above I think it is all of the above but I'm not sure Thank you for the assistance

    asked by Tim
  95. math

    of 28 and a quotient of 8 ?

    asked by erin
  96. Chemistry 102

    For a question like “calculate the pH of an aq.solution that is 1.0 M CH3COOH and 1.0 M CH3COONa, how do you know to write the equation like this: CH3COOH + H2O => H3O+ + CH3COO- and not like H3O+ + CH3COO- => CH3COOH + H2O for the ICE chart. This would

    asked by Nick
  97. social studies

    what are Canada's natural resources and what are japan's natural resources?Please answer this question.Thank you:):):):):):)^-^ ^-^ ^-^ ^-^

    asked by binah
  98. Math

    Shirley has 18 coins. One sixth of the coins are quarters, one third of the coins are dimes, and one half of the coins are nickels. What is the value of Shirley's coins?

    asked by Mia
  99. social studies

    what are Canada's natural resources and what are japan's natural resources?Please answer this question.Thank you:):):):):):)^-^ ^-^ ^-^ ^-^

    asked by binah
  100. Science/ Math

    The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate can reach 1200 beats per minute. Predict its lifespan and justify your explanation.

    asked by Dee-Dee
  101. Chemical Kinetics

    The kinetics of the catalytic decomposition of NH3 into N2 and H2 on a hot tungsten filament at 1100 °C was investigated by Kunsman. He measured the times (t1/2) required for half of NH3 to decompose at different initial NH3 pressures, as shown below: P

    asked by Teddy
  102. Calculus- math

    integral of (2x) / [(x+2)(x+1)]

    asked by Zack
  103. chemistry

    An aqueous solution contains 38.6 g NaCI per 155 mL of solution. This solution is _________.

    asked by Jim
  104. trig

    verify: cot(-t)+csc(-t)/sin(-t)=1/1-cos(t)

    asked by cj
  105. Chemistry

    a sample of gas is warmed from 15.o degrees celsius to 45.o celcius at a constant pressure. its initial volume is 1.75 liters. what is the final volume of gas?

    asked by Adina
  106. Trig

    How do i set this trig problem up? PLEASE help me. Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = -1/2, with t in quadrant 4.

    asked by Dave
  107. Computers/Excel

    You wish to calculate the commission on sales. The commission is 6% on all sales that are at least 20% above cost.

    asked by Jamie
  108. Science/ Math

    The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate can reach 1200 beats per minute. Predict its lifespan and justify your explanation.

    asked by Pittsburgh Pa
  109. Physics

    Which is more harmful---smaller wavelength, like gamma ray, or larger wavelength, like radio waves?

    asked by Emily
  110. college chemistry

    The half-life of 13252Te is 3.26 days. This isotope decays by beta emission to a highly unstable intermediate that decays rapidly to a stable product by beta emission. (a) What is the ultimate product obtained from Te-132? Write a balanced equation for

    asked by brody
  111. PHYSICS

    Three small spheres are placed at fixed points along the x-axis, whose positive direction points towards the right. Sphere A is at x = 23.0 cm, with a charge of -10.00 ìC. Sphere B is at x = 55.0 cm, with a charge of 2.00 ìC. Sphere C is at x = 57.0 cm,

    asked by Jay
  112. Chem 1LC

    Could someone please help me with this problem!!?!? Thanks you so much!!! The reduction potentials for the species involved in an electrochemical cell are as follows: M+ + e– M is 0.50 V J+ + e– J is 1.20 V. All solutions are 1.00 M and J+ J is

    asked by Alex
  113. 3rd grade

    of 28 and a quotient of 8?

    asked by erin
  114. social studies

    Two questions... 1. What held office for one year to prevent abuses of power? 2. What keeps one part of a government from becoming too strong?

    asked by Hannah
  115. Hydrogen Bonding

    The longer the hydrogen bond, do the Intermolecular Forces increase or decrease. So if molecule A has a H-bond with a length of 1.7 A and molecule B has a H-bond length of 1.8 A would molecule A or molecule B have a stronger IMF? It would seem that the

    asked by ChEm
  116. math

    How many 3 letter arrangements can you make while making the first and the third letter one of the 21 constants and the middle letter one of the 5 vowels {a,e,i,o,u} . {two such arrangments to use are KOM and XAX?

    asked by chidora
  117. calculus

    Find the value of the limit.( use L'hospital rule) lim (tanx/x)^(1/x^2) x>0

    asked by Yen
  118. Chemistry

    Whether A dissolves in B depends on a [imbalance, balance] between favorable entropy and favorable enthalpy. One of the two phrases in the brackets is correct, I don't know which it is. Can someone tell me and explain why? Please and thank you.

    asked by Ana
  119. economics

    Suppose velocity is stable, What would the Federal Reserve need to know in order to keep output at its natural level following a supply shock?

    asked by ben
  120. math

    Evaluate the integral S (range from 1 to 3) (x^2 +1)dx by computing the limit of Reimann Sum.

    asked by Jen
  121. algebra

    Together, Jared's age and his grandfather's age total 100. But Jared's grandfather is 70 years older than him. How old is Jared's grandfather?

    asked by tim
  122. english

    what are some of the things someone should consider when or before voting for a particular government or party at election time? please help me.

    asked by jameela
  123. math

    8 = 2^5x * 4^x^2 In case I didn't write it correctly, it is 8 equals 2 to the 5x times 4 to the x squared

    asked by Cindy
  124. CHEMISTRY

    From these two reactions at 298 K, V2O3(s) + 3CO(g) -> 2V(s) + 3CO2(g); DH° = 369.8 kJ; DS° = 8.3 J/K V2O5(s) + 2CO(g) -> V2O3(s) + 2CO2(g); DH° = –234.2 kJ; DS° = 0.2 J/K calculate DG° for the following at 298 K: 2V(s) + 5CO2(g) -> V2O5(s) + 5CO(g)

    asked by Anonymous
  125. accounting

    can anyone help me with accounting

    asked by tru
  126. chemistry

    A solution is made by adding 5.0 g Na2CO3 * 10H2O to enough water to make a 500 mL solution. what is the molarity. I have: M=mol solute/liter solution = (5/286)/.5 = .035M 286 is what i got for the molar mass of Na2CO3 * 10H2O Is that correct?? I think it

    asked by Maggie
  127. Chem

    Given: Al3+(aq) + 3e–  Al(s); E° = –1.66 V Cl2(g) + 2e–  2Cl–(aq); E° = 1.36 V What is ∆G° for the following cell reaction? 2AlCl3(aq)  2Al(s) + 3Cl2(g)

    asked by Anonymous
  128. Chemistry

    Hi, this is a reply to the question I asked earlier. I asked about the classification and functional group of an organic compound. It has bonds between H-C-C-H. Off of each Carbon is single bonds of Hydrogen above and below. making a total of 6 Hydrogens

    asked by Julia
  129. L.A

    Could someone help me interpret this poem?Thanks Nature's first green is gold, Her hardest hue to hold. Her early leafs a flower; But only so an hour. Then leaf subsides to leaf. So Eden sank to grief, So dawn goes down to day. Nothing gold can stay.

    asked by Shadow
  130. algebra

    for the system of inequalities y >= 2x - 1 and y = 2x - 1, but not y

    asked by tim
  131. English

    This is one sentence which I am having a bit difficulties on. It contains too much wordiness from my outlook. Proper sitting and standing are very crucial factors in having a healthy back. Does this make better sense? Sitting and standing properly are

    asked by Sara
  132. 7th grade

    If one person leaves at 65 mph and another leaves at 70 mph 5 minutes laterwhere do the come together at the same point?

    asked by mary
  133. physics

    A .545kg ornament is hanging on a .75m uniform board, with mass .22kg above a babies crib. the ornament is .35 m from one end. Each end is supported by a wire. Calculate the tension in the two wires.

    asked by Maira
  134. English

    1. Is it too late to call him. (What does 'it' refer to in the sentence? Weather?)

    asked by rfvv
  135. Physics

    An athlete twirls a 1 kg hammer tied to the end of a 1.3 m rope in a horizontal circle the hammer moves at the rate of 1.0 rev/sec. (a)what is the centripetal acceleration of the hammer? (b) what is the tension in the rope?

    asked by Anna
  136. English

    I have to write a poem about my childhood and here it is. My childhood was full of people with tender hearts who followed me like my shadow wherever I went; Whether it be a long walk or short; they'd be with me. In those days life seemed to pass slowly and

    asked by Sara
  137. Physics

    In a cyclotron, an electromagnet exerts a force of 7.50x10-13N on a beam of protons. Each proton has a mass of 1.67x10-27kg. The electromagnet causes the protons to travel in a circular path of radius 1.20m. What is the velocity of the proton beam?

    asked by Elvia
  138. math

    3.75qt= qt c

    asked by emma
  139. Physics

    A 75 kg pilot flies in her plane in a loop and notices that at the top of the loop, where the plane is completely uspside down for an instant, she hangs freely in her seat. the airspeed indecator reads 120m/sec. (a)what is the radius of the planes loop?

    asked by Maira
  140. Physics for Life science

    1.Since action and reaction are exactly equal and oppositely directed, how is ever possible for a net force to be acting on the body?

    asked by Simeon
  141. Physics

    Two bowling balls each have a mass of 6.8kg. the speres are located nest to one another with their centers 21.8 cm apart. what gravitational force do they exert on each other?

    asked by Lorena
  142. Matt 116

    Suppose that the x is years and the y is some measured value in the real world

    asked by Anonymous
  143. health

    identify specific examples of how the roles you play with family and friends differ from those you play in other social groups.

    asked by sam
  144. Physics

    Using the fact that a 1.0 kg mass weighs 9.8N on the surface of the earth and the radius of the earth is roughly 6.4x10^8m. calculate the mass of the earth.

    asked by Hannah
  145. world history

    the question is: Why is England and France developing into nations important to us? i need websites where i can get information on this please

    asked by trixie
  146. Physics

    A train is sounding a horn of constant frequency shows down as it nears a station. What change in pitch is heard by a commuter standing in the station?

    asked by Sylvia
  147. Physics for Life science

    1. Two people-one twice as heavy as the other one, play tug-of-war with a 12m ideal rope while standing on a frictionless ice surface. Would any of them move and if he does, how far? Explain why?

    asked by Simeon
  148. childcare

    which one of the following lunches provide a variety in both color and texture? A.Egg salad sandwhich, applesauce,celeery hearts,milk b.Egg salad sandwhich,Banana slices,buttered squash,milk c.Egg salad sandwhich,raisins,wax beans,milk d.Egg salad

    asked by Nicole
  149. Science/Math

    The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate can reach 1200 beats per minute. Predict its lifespan and justify your explanation.

    asked by Please help!
  150. Physics for Life science

    1.You are riding on a 20m diameter Ferris wheel. when your cart is at the bottom, you feel twice as heavy as you normally are. what is the speed of the wheel?

    asked by Simeon
  151. Algebra II

    (10-3i)-(-7+6i)

    asked by Lisa
  152. Economics

    no idea what to do guys, little help please 11. Answer the next three questions on the basis of the following production possibilities data for Francia and Galacia. All data are in tons. Francia production possibilities: A B C D E Soup 60 45 30 15 0 Nuts 0

    asked by Kyle
  153. chemistry

    Given: H2 (g) + O2 (g) ⇌ H2O2 (g) K = 2.3 x 106 at 600 K 2 H2 (g) + O2 (g) ⇌ 2 H2O (g) K = 1.8 x 1037 at 600 K Calculate Gº for the following reaction: H2O (g) + 1/2 O2 (g) ⇌ H2O2 (g)

    asked by Claire
  154. business technology

    what are the positives and negatives that globalization brings to the u.s.a and to other countries?

    asked by Anonymous
  155. phisycal science

    if 1.5 of ethanol is 37 degree celcious, what is the final tempereature when you add 80000 joules

    asked by Anonymous
  156. physics for life sciences

    since action and reaction are exactly equal and oppositely directed how is it ever possible for a net force to be acting on a body?

    asked by sarah
  157. Chemistry

    How could i determine the apparent molal concentration of BaNO3 when the freezing point of the aqueous solution is -2.65 degrees Celcius

    asked by Lexi
  158. Math

    3/y+2 over 7/y-4 can u please show me the steps on how you got the answer. Thank You

    asked by Scott
  159. Physics for Life science

    1. A block of mass m=100kg rests on a level ground. With what force, parallel to the ground, must you push the block so that it is just ready to start sliding? The coefficient of static friction between the block and the ground is 0.40.

    asked by TangenT
  160. nutrition

    I got a case study about a woman with ulcerative colitis and i need help finding information on UC and prednisone and sulfasalzine from .o r g cites , im not allowed to use .c o m cites . its stupid. help please

    asked by laurel
  161. Physic

    If you shout across a canyon and hear the echo 0.57 s later, how wide is the canyon?

    asked by Lua
  162. sicence

    since action and reaction are exactly equal and oppositely directed,how is it possible for a net force to be acting on a body?

    asked by The Ab
  163. chemistry

    Question 26A student completes a titration by adding 12.0 milliliters of NaOH(aq) of unknown concentration to 16.0 milliliters of 0.15 M HCl(aq). What is the molar concentration of the NaOH(aq)?

    asked by frnk
  164. Chemistry

    Consider a 790-mL container at 21 °C in which the pressure of argon is 1.98x106 Pa. a) What mass of argon (in g) is present in this container? b) How many molecules is this?

    asked by write2khin
  165. chemistry

    What is the concentration of silver(I) ion in a saturated solution of silver(I) carbonate containing 0.0092 M Na2CO3? For Ag2CO3, Ksp = 8.6 × 10–12.

    asked by Anonymous
  166. Science

    Does the container ,size minutes and time different , to freeze cold water and hot water? And why?

    asked by Sergio
  167. english

    is this sentence clean she buyed some dounuts from the shop she boght some donuts from the shop.

    asked by Emma
  168. Math

    "In vase A, there are 3 red balls and 5 white balls. In vase B, there are 6 red balls and 4 white balls. Two balls are to be drawn at random, without replacement, from each vase. What is the probability of selecting 4 red balls?" (Answer: 1/28) So I

    asked by Stuck
  169. chemistry

    What is DG° at 298 K for the following reaction? Pb(s) + PbO2(s) -> 2PbO(s) Substance DG°f (kJ/mol) at 298 K PbO(s) –187.9 PbO2(s) –217.3

    asked by Anonymous
  170. physics

    Imagine an airplane flying under a cloud during a thunderstorm.Do the passengers get electrocuted? EXPLAIN WHY or WHY NOT. Should the airplane's wheels be insulators or conductors? EXPLAIN WHY.

    asked by Sandhya
  171. math

    A bicycle wheel has a diameter of 26 inches. About how far will it travel in one revolution?

    asked by nancy
  172. Chemistry

    What is the change in entropy when 0.290 g of silicon is burned in excess oxygen to yield silicon dioxide at 298 K? Si(s) + O2(g) -> SiO2(s); ÄS° = –182.4 J/K at 298 K

    asked by Anonymous
  173. English Quick ?

    Is the grammar in this sentence correct and does it sound alright. Its a piece from my research paper. To give the roof that authentic Cotswold style, stone shingles, which grew smaller and smaller as they ascended toward the peak, were imported from

    asked by Kayden
  174. Chemistry

    Whether A dissolves in B depends on a [imbalance, balance] between favorable entropy and favorable enthalpy. One of the two phrases in the brackets is correct, I don't know which it is. Can someone tell me and explain why? Please and thank you.

    asked by Ana
  175. chemistry

    Consider the following reaction: 3C(s) + 4H2(g) -> C3H8(g); DH° = –104.7 kJ; DS° = –287.4 J/K at 298 K What is the equilibrium constant at 400.0 K for this reaction?

    asked by Anonymous
  176. Geometry-confused!

    Find the length of a side of a rhombus whose diagonals measure 10 and 24?

    asked by Rosie
  177. Chemistry

    a volume of 50mL of a standard HCl solution is needed to neutralize 50 mL of 1x10-2 M NaOH. what volume of this HCl solution is needed to neutralize 50 mL of 1x10-2 M Ba(OH)2

    asked by Bianca
  178. Math Analysis

    Find the exact value of cos(x/2) if sin x = 3/4 and x is in quadrant II. ==> I got ã(4-ã7)/2. Is this correct?

    asked by Emily
  179. british literature

    DESCRIBE THE TONE OF "THE WANDERER."

    asked by tiffany
  180. algebra

    Not sure where to go next. I need to solve this quadratic equation 7x^2-5=0. This is what I have so far, not sure where/what to do next x=2/7 x=sqrt2/7 or x=-sqrt2/7* =+/-sqrt2/7 +/-sqrt14/7 not even sure if this is right.

    asked by dani
  181. geometry-PLEASE CHECK AND HELP DUE TODAY

    1. Refer to the following line m: b. Name two rays on m that have endpoint B. d. Find a simpler name for the intersection of rays BA and AC the line m has points a b and c going on across like that on the line would the answer be ba and bc? what would the

    asked by jessica
  182. Math

    Find the center, vertices, foci, and eccentricity of the ellipse. 9x^2 + 4y^2 - 36x + 8y + 31 = 0 My answer was: center=(2,1) v=(-2,10)(-2,-10) f=(-2,11)(-2,-11) e=11/3 Where did I make a mistake?

    asked by Abbey(Please help)
  183. statistics

    Distance travelled in a week by sales staff employed by nationwide security firm is approximately normally distributed with a mean of miles and standard deviation of 48 miles. Estimate the percentage of staff who in a week travel less than 80 miles

    asked by Anonymous
  184. English

    Can you check these sentences for me, please? Thanks a lot. 1) Can you say "he prefers working on his own rather than in a group?" or the only possible form is "He prefers working on his own to working in a group?" 2) It is a superb summer’s day between

    asked by Franco
  185. algebra

    -5x - 5y = -6 -5/2x - 5/2y = -6 a) (-2,2) b) (-2,-2) c)none d)infinite number of solutions and the answer i picked was c thanks

    asked by candy
  186. statistics

    Distance travelled in a week by sales staff employed by nationwide security firm is approximately normally distributed with a mean of 200 miles and standard deviation of 48 miles. Estimate the percentage of staff who in a week travel: 1. a)less than 80

    asked by Ash
  187. chemistry

    Explain why the rate of a simple chemical reaction such as NO(g)+1/2O2(g)=NO2(g) is likey to be most rapid at the beginning of the reaction.

    asked by Kim
  188. Chemistry

    To form a molecule with a trigonal bipyramidal electron geometry, what set of pure atomic orbitals must be mixed? The answer is one s, three p, and one d. How do you figure this out?

    asked by Danielle
  189. chemistry

    What is the pH of the solution created by combining 12.90 mL of the 0.10 M NaOH with 8.00 mL of the 0.10 M HC2H3O2?

    asked by jc
  190. To Writeacher

    Writeacher, can you please have a moment to look at my previous English post. Thank you very much in advance:-)

    asked by Sara
  191. English

    How do you prove that a view of society in a book is more interesting than another book using a narratology element? How do these connect through characters? If the character personifies this view of society how does this make the book interesting?

    asked by Artemis
  192. trig

    Please help me solve this problem. I have a test tomorrow and I do not understand at all. Determine all solutions of the equations in radians. Find cos x/2, given that cos x = 1/4 and x terminates in 0 < x < π/2.

    asked by Mandy
  193. English

    I have to write my cure for an "ill" that plague teenagers. This one poem provides a good example of what I'm trying to do. I t is calles Scrawny's surfire ance cure. The plague in it was zits, and the cure it suggested was First apply a cloth dipped in

    asked by Sara
  194. Math

    Find an equation of the ellipse with its center at the origin. center(0,0) foci(2,0)(-2,0) major axis=8 My answer is x^2/16 + y^2/15 = 1. Is this correct?

    asked by Abbey(Please help)
  195. Chemistry (Stoichiometry)

    what mass of so2 is produced from the reaction between 31.5g of s8 and 8.65g of o2? I know how to find the limiting reagents and all but I need a little help knowing how to find the mass of the product.

    asked by Jill
  196. Chemistry

    2. Olive oil is almost pure triolein (a molecule). The molar mass of triolein is 885 g/mol. How many olive oil molecules have you got in 500g of olive oil?

    asked by Jimbo
  197. chem

    n2 g 3h2 g 2nh3 g + 22,000 cal Explain how the equilibrium is shifted when more nitrogen is added?

    asked by sam
  198. Math

    I have a TI-83 graphing calculator. How do you graph a polar equation on this calculator. Also how would I graph lim 5/x-2 x-->2 in order to find the limit?

    asked by Abbey(Please help)
  199. Chemistry

    If 1.88 g of copper(II) chloride dihydrate is reduced by Mg(s), what is the minimum mass of Mg(s) required for this reduction? my work CuMg --> Cu(s) + Mg molecular weight= 170.482 CuCl2 . 2H2O 1.88/170.482 = 0.01103 mol CuCl2 . 2H2O =0.01103 mol Mg

    asked by Anonymous
  200. Math-Reiny

    I posted this problem earlier and you answered it for me. The teacher said the correct answer is 3+2y/7-4y. How is that the answer. Below is what you did earlier 3/(y+2) / (7/y-4)) = 3/(y+2) * (y-4)/7 = (3y-12)/(7y+14) or 3(y-4)/[7(y+2)]

    asked by Scott
  201. 9th grade

    at the top of a hill a rollercoaster has 67,500j of kinectic energy and 290,000j of potential energy. gradually the rollercoaster comes to a stop due to friction. If the rollercoaster has 30,000j of potential energy when it stops, how much heat energy is

    asked by robbie
  202. Chemistry

    To raise the temperature of 5 kg of water from 20 0C to 30 0C, a 2-kg iron bar is heated and then dropped into the water. What should the temperature of the bar be (ciron = 0.46 kJ/kg 0C)

    asked by Joshua
  203. Environmental Science

    For my environmental science reseaerch paper on coral reefs I wanted to copy this intro paragraph from my workbook: Coral reefs are the second richest ecosystem or interdependent environment on Earth. They have been called the rain forests of the oceans

    asked by y912f
  204. Chemistry

    3. How many molecules are in 1 L of water (assume that the density of water is 1g/ml)? (5 marks)

    asked by Jimbo
  205. English

    Thank you very much for correcting my sentences. As I changed a few things, I wanted you to have a look at them. 1) It is a superb summer’s evening between six and seven. The episode takes place at Mulberry’s the florists in Bond Street, London. 2)

    asked by Franco
  206. College Health

    No one seems to want to help me. I just need to find out which questions I did not answer right so I can go back and correct them. 1- The process of breaking a complex substance down into smaller components is called? A- neutralization B- metabolism C-

    asked by Anonymous
  207. English

    I forgot to include these sentences. I hope you can see them as well. 1) Septimus Warren Smith, a World War I veteran suffering from shell shock, is described as a man in his thirties with an apprehensive expression. 2) He has got a pale face, a beak nose

    asked by Franco
  208. college chem

    S-35 (t1/2 = 87.4 d) is used in cancer research. The biological half-life in the human body is 90 days. What is the effective half-life of S-35?

    asked by Anonymous
  209. Chemistry

    What is the pH of the solution created by combining 12.20 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH pH w/HCl pH w/HC2H3O2 12.20 =================================== my work: 0.000420 moles

    asked by Amphee
  210. Life orientation

    Provide recommendations on how to address the topic that you identified in the previous question.

    asked by Priscilla Motsamai
  211. chemistry

    at what temperature would the sloubility level of 50 g KCL in 100 g H2O?

    asked by Kirby
  212. math analysis

    How o you solve 4sinxcosx=1 ???

    asked by anonymous
  213. chemistry

    What does a high Boltzmann Distribution value indicate?

    asked by anonymous
  214. math

    How many pounds of Acid Per inch? If you have a tank that’s 51ft 0 in. long by 4ft 7 in. wide, and need to fill it to the two inch mark with hydrochloric acid, how many pounds are you putting in it? (Hint 1 gallon of acid weights 9.8 lbs.

    asked by Nancy
  215. Math

    How do figure out if a porabala is streched or compressed?

    asked by Kristen
  216. Chemistry

    What is the pH of the solution created by combining 2.70 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first diluted

    asked by Ashley
  217. Chemistry

    What is the pH of the solution created by combining 2.70 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first diluted

    asked by Ashley
  218. Science

    The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate can reach 1200 beats per minute. Predict its lifespan and justify your explanation.

    asked by Please help!
  219. Chemistry

    NH3(g) + 202(g) = HNO3(aq) +H2O (l) Is this reaction a combination, decomposition, single replacement, double replacment or other? Also is it redox or non redox?

    asked by Al
  220. Science

    Why might scientists want to figure out a way to promote cell division in mature nerve cells? There was no info about this in my text, which is why I posted this on here. I'll appreciate all the help you could give me, thanks

    asked by Sara
  221. Chemistry

    10% of a sample reacts in 25 s. If the reaction follows first order kinetics, how long would it take for half the sample to react?

    asked by mandy
  222. Science

    y do skinn cells reproduce quicker than other types of cells? I wrote: They reproduce quicker than other types of cells because they grow at a faster rate. Their rate in growing is very high. Any other inof would be greatly appreciated, thanks:-)

    asked by Sara
  223. Science

    areas where cells might reproduce quickly, other than human skin is in the hair, mouth.... what others?

    asked by Sara
  224. math

    Fixed points of f? f(x) = x^2+13/12x - 1/2 a) use algebra to find the fixed points and classify them. b) use the gradient criterion to determine an interval of attraction for one of the fixed points of f c) find exact values of the 2nd and 3rd terms of the

    asked by Chamberlain
  225. Intermediate Algebra

    how do you add or subtract rational expression with unlike demoninators Please explain

    asked by Donald
  226. social studies

    How long after the Albany Congress did the First Continental Congress Meet?

    asked by rhon
  227. Health (Anonymous)

    I have done all the leg work I was just wondering if some1 could let me know how I did is all. 1- The process of breaking a complex substance down into smaller components is called? A- neutralization B- metabolism C- anabolism D- catabolism Answer- C 2- An

    asked by B B
  228. english

    use this words to write a little story...what, when, white, ship, shake, wish, them, then, think....

    asked by shrey
  229. English

    I'm extremely sorry for letting you check a sentence which didn't make sense at all. I hope you can have a look at them now. 1) Septimus Warren Smith, a World War I veteran suffering from shell shock, is described as a man in his thirties with an

    asked by Franco
  230. chemistry

    sandstone contains 30% by weight of CaCO3, and the remaining is SiO2. 1g is dissolved in 200ml of 1 mol per litre of HCL...what will the concentration of calcium in the solution?

    asked by wills
  231. chemistry

    sandstone contains 30% by weight of CaCO3, and the remaining is SiO2. 1g is dissolved in 200ml of 1 mol per litre of HCL...what will the concentration of calcium in the solution?

    asked by wills
  232. Statistics

    Distance travelled in a week by sales staff employed by nationwide security firm is approximately normally distributed with a mean of 200 miles and standard deviation of 48 miles. Estimate the percentage of staff who in a week travel: 1. a)less than 80

    asked by Laretta
  233. english

    what caused the decline of modernism?

    asked by cristal
  234. Chemistry

    NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l) How do I calculate the oxidation states of Nitrogen and figure out if it is reduced, oxidized or neither?

    asked by Carli
  235. english

    i need to write a story on earthquakes

    asked by emilio
  236. Science

    The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate can reach 1200 beats per minute. Predict its lifespan and justify your explanation.

    asked by Please help!
  237. math

    20/36 in simplest form

    asked by jan
  238. science

    on which of these do the phases of the moon have an affect? a.the season b.ocean tiders 3.day and night 4.weather

    asked by kim
  239. To emilio

    You liked my ending stanza. Do you have any suggestions onhow I could make it seem more imaginative?

    asked by Sara
  240. North Hall

    2x + 3y = -13 4x + y = -1

    asked by Holly
  241. Algebra

    what do you call a skydiver with the flu

    asked by Pam's
  242. 9th grade -physical science

    a the top of a hill a rollercoaster has 67,500j of kinetic energy and 290,000j of potential energy. gradually the roller coaster comes to a stop due to friction. if the roller coaster has 30,000j of potential energy when it stops, how much heat energy is

    asked by robbie
  243. English-For Jiskha Tutors

    Can some of you please take a look at my previous English posts. They are all on this page, and I need all of them to be checked. Please and thank you:-)

    asked by Sara
  244. science

    On which of these do the phases of the moon have an affect? a.the season b.ocean tide c.day and night d.weather

    asked by kim
  245. 4th grade science

    on which of theseb do the phases of the moon have an affect? a. the season b.ocean tides c.day and night d.weather

    asked by kim
  246. Math Analysis

    Use the half-angle formula to find the exact value of cos(x/2) when tanx = -5/8 and x is in quadrant IV. (| is a radical) ==> I got sqrt((89 + 8sqrt(89))/178). Is this correct? I hope my answer is easy to read..

    asked by Emily
  247. american history

    Please check :) 1. How did the pattern of european immigration shift in 1890? A. from jewish to catholic B. From northern to southern and eastern europeans*** C. from eastern to southern europeans D. from eastern to western europeans 2. The massive

    asked by made'
  248. Geometry

    I need to find surface area of triangular prism-dimension of base is 9.9 by 6.2 distance between bases is 14.6 choices are: 436.278 466.97 332.94 253.46 Thank you

    asked by Julia
  249. Math

    Simplify. 1.xy^2/xy 2.m^5np/m^4p 3.5c^2d^3/-4c^2d 4.-4c^2/24c^5 Are these the right answers?Thanks 1.xy 2.mnp 3.-5/4cd^2 4.-1/6c^3

    asked by Shadow
  250. calculus

    how do you simplify log5 square root pq over 8

    asked by Ashley
  251. finance

    Sony $4.50 preferred is selling for $65.50. The preferred dividend is non growing. What is the required return on Sony preferred stock?

    asked by dre
  252. english

    I need five animals out of this.geornniebsclkmroteclaoy

    asked by anna
  253. Chemistry

    How much water would you add to 50.0 mL of 0.700 M NaOH if you wanted the final concentration to be 0.300 M?

    asked by Chemisty
  254. english

    This is an inventor and his/her invention.cyrusmccormickreaper

    asked by anna
  255. Science

    Could someone please have a moment to look at my science posts as well; I want Jiskha tutors to help me with them, thank you very much for all the help you could give me:-)

    asked by Sara
  256. Physics question

    A naked person with a surface area of 1.55 meters squared and a skin temperature of 37.3 degrees is in a sauna room at T = 82.0 degrees. The person's skin has an emissivity of 0.910. She evaporates sweat from her body to balance the rate of heat absorption

    asked by Sarah
  257. Chemistry

    what would the freezing point be for a solution of 0.87M aqueous ammonia? The density of this solution is 0.992g/cm3

    asked by Chem
  258. statics

    Using the 68-95-99.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: Suggest you make a drawing and label first…Drawings need not

    asked by Anonymous
  259. algebra

    Bob mosw his lawn in 3 hours, Jane can mow the same lawn in 5 hours. How much time would it take for them to mow the lawn together?

    asked by jj
  260. chemistry:(....

    what temperature would each of the following solubility be observed? a. 50g KCL in 100g H2O b. 100g NaNO3 in 100g H2O c. 60g KNO3 in 100g H2O

    asked by Kirby
  261. 6th grade science

    I need help. Quick.I need an idea on how to do a science project that has to have somthing to do with types of energy,atmopsphere or life science. I only have 2 more weeks left. I need an idea. thanks :)

    asked by gill
  262. Math algebra

    I'm reposting this, because Mathmate's answer hasn't directed me to the WHY? part of the question. Any prompts appreciated. The product of any two (whole) numbers each of which leave a remainder of 1 on dividing by 7, also leaves a remainder of 1 on

    asked by charlie
  263. 6th grade science

    I need help. Quick.I need an idea on how to do a science project that has to have somthing to do with types of energy,atmopsphere or life science. I only have 2 more weeks left. I need an idea. thanks :)

    asked by gill
  264. To DrBob222

    can you please have a moment to look at my other previous posts, thanks a lot:-)

    asked by Sara
  265. Intermediate Algebra

    What is the meaning term rational expression. In your word and examples explain how to divide rational expressions

    asked by rosa
  266. algrba

    help me to sole these problem please, multiply -2(X-3)

    asked by jennifer
  267. college

    if a sample of the radioactive nuclide 139cs has an activity of 0.0730 ci, what is the instantaneous rate of decomposition of 139cs in terms of grams per second? the mass of 139cs is 138.9134 amu. 1 ci 3.700 × 1010 disintegrations/ s, 1 amu 1.66054

    asked by Anonymous
  268. trig

    How do you solve for these identities: 1-sin^2è/cosè= cosè sin^4è-cos^4è=2sin^2è-1

    asked by Anonymous
  269. physics

    An elevator in a tall building is allowed to reach a maximum speed of 3.0 m/s going down. What must the tension be in the cable to stop this elevator over a distance of 2.4 m if the elevator has a mass of 1500 kg including occupants? Need step by step help

    asked by Anonymous
  270. algabra

    what is the prime factorization of 420

    asked by jennifer
  271. Chem

    Which salt has the highest molar solubility in pure water? Cd(OH)2, Fe(OH)2, PbCrO4, CdCO3, Mn(OH)2

    asked by V
  272. Chemistry

    8. Hydrogen and oxygen gas combine explosively to produce water. Write a balanced chemical equation for this process. If 10 mol of hydrogen reacted with oxygen, what volume of liquid water could be produced?

    asked by Jimbo
  273. Trig

    Find cos(s+t) if cos s= -1/2 and sin t= 3/5, s and t are in quadrant II. I got the answer to be -4/10 plus -3sqrt(3)/10. Is that right? Then a second problem was find sin (s+t) if sin s=2/3 and sin t=-1/3, sin is in quadrant II and t in quadrant IV. I got

    asked by Anonymous
  274. algebra

    simplify: 1/4 - (-3/8)

    asked by jennifer
  275. 6th science

    does any body have an idea on a science project to do with enrgy?

    asked by g
  276. English

    This is my Trombone Solo poem. Please see if it's good, thanks:-) I like people Who gain knowldge from school; Not any kind of people, Silly ones or cruel. I like people possessing respect in their hearts, Thinking positively about others, And doing their

    asked by Sara
  277. Chemistry

    a)How much would the freezing point change in a 2.5m solution of phenol in benzene? (freezing point of phenol is 7.40 degrees C, freezing point of benzene is 5.12 degrees C) b)How much would the boiling point change in a 1.0m solution of magnesium chloride

    asked by Danny
  278. algebra

    juan is 8 years than his sister rosa. one day, he tells rosa that he is twice her age, but will only be twice her age for one year. to figure out how old juan and rosa are, you must first identify the conditions. what are the conditions in this problem? a)

    asked by wan
  279. English

    I have to describe Cyrano de Bergerac's physical traits but the only things I can find through Act III is his large nose, moustache, air of arrogance, and his white plume hat-are there any more physical traits-I've spent the last half hour attempting to

    asked by Janet
  280. Chemistry

    Help please! I need to identify an organic compound and tell the functional group of the molecule- the compound is single-bonded ,it is composed of a middle chain H,C,C,H. Off both carbons are single chains consisting of a H above and below each of the

    asked by Julia
  281. chemistry

    Does the application of heat to a substance always produce a chemical change? And give examples to support your answer.can someone help me?

    asked by Jackie
  282. Intermediate Algebra

    a male born in 1975 does not want his future wife to outlive him. What should be the year of birth for his wife so that they both can be expected to die in the same year? Find M(y)+F(y) to get the formula for life expectancy of a person born in year y 2 M

    asked by Ganelle
  283. chemistry

    Does the application of heat to a substance always produce a chemical change? And give examples to support your answer.can someone help me?

    asked by Jackie
  284. English

    I also have to describe Cyrano de Bergerac's personality-all I can think of that it is flamboyant,charismatic, poetically inclined, arrogant yet timid and fearful in love and holds true to his belief system to his own demise. Is any of that correct?

    asked by Janet
  285. chemistry

    Does the application of heat to a substance always produce a chemical change? And give examples to support your answer.can someone help me?

    asked by Jackie
  286. math

    how to do frequency tables 3-1

    asked by sharrod