samantha

Questions and responses by samantha, page 6
  1. science

    (c) The kinetic energy of the emitted electrons is measured to be 15.2 eV. What is the first ionization energy of Hg in kJ/mol?

    asked on December 16, 2012
  2. science

    Calculate the density of sulfur hexafluoride gas at 703 torr and 23°C. density is mass/volume so how do i get those from what i am given? also ) Calculate the molar mass of a vapor that has a density of 6.735 g/L at 11°C and 743 torr.

    asked on December 16, 2012
  3. science

    Calculate the number of molecules in a deep breath of air whose volume is 2.68 L at body temperature, 37°C, and a pressure of 743 torr (b) The adult blue whale has a lung capacity of 5.0 103 L. Calculate the mass of air (assume an average molar mass 28.98

    asked on December 15, 2012
  4. science

    how do i ansewr this question? An aerosol spray can with a volume of 400. mL contains 2.25 g of propane gas (C3H8) as a propellant (a) If the can is at 31°C, what is the pressure in the can? (b) What volume would the propane occupy at STP? (c) The can's

    asked on December 15, 2012
  5. science

    A fixed quantity of gas at 22°C exhibits a pressure of 739 torr and occupies a volume of 5.46 (a) Calculate the volume the gas will occupy if the pressure is increased to 1.74 atm while the temperature is held constant.

    asked on December 14, 2012
  6. geometry

    find the measures bc and ac

    asked on December 13, 2012
  7. People

    who is a famous person who didn't go to college or didn't graduate high school and is in bad shape because of it. (aka is poor or cant get a job or turned into a criminal etc)

    asked on December 12, 2012
  8. ece

    1.wich of the following dramatic play behaviors are most typical for a 2-year old child? a.uses realistic props,and repeats routines over and over. b.prefers exciting and danger-packed themesfor play. c.plays in groups of one gender, with lots of dialogue.

    asked on December 11, 2012
  9. chemistry

    what is the concentration of the hydroxide ion in a solution if .12 mol of strontium hydroxide are dissolved in water and the final solution volume is 500. mL?

    asked on December 8, 2012
  10. debate

    why would a capitalist society, in general, cause war?

    asked on December 5, 2012
  11. chemistry

    (a) Construct a Lewis structure for O2 in which each atom achieves an octet of electrons. (Assign lone pairs where appropriate.) i am using marvin sketch and don't know what i need to show

    asked on December 2, 2012
  12. chem

    Which ionic compound is expected to form from combining the following pairs of elements? yttrium and oxygen i put YO but its wrong

    asked on December 1, 2012
  13. biology

    why would a One serving of particular food that contains 16 g of carbohydrates, 2 g of proteins, and 10 g of fats hav 300 calories?

    asked on November 30, 2012
  14. math

    the ratio of the number of men to the number of woman working at tommys pub is 7:2.altogather there are 360 workers at the company. how many of the workers are woman.

    asked on November 27, 2012
  15. chem

    Arrange the following oxides in order of increasing acidity: P2O5, As2O5, N2O5, SnO2, SeO3, and BaO. (Use the appropriate symbol to separate substances in the list.)

    asked on November 27, 2012
  16. Physics. Easy question? Please help

    What is the (a) maximum and (b) minimum total resistance value that can be obtained using three resistors whose values are 2.0 ohms, 4.0ohms and 6.0 ohms? The resistors can be used individually, in pairs, or all three at once. Is this a trick question? Is

    asked on November 26, 2012
  17. chemistry

    Arrange the following oxides in order of increasing acidity: P2O5, As2O5, N2O5, SnO2, SeO3, and BaO. (Use the appropriate symbol to separate substances in the list.) I have no idea how to do this! please help!

    asked on November 25, 2012
  18. chemistry

    how does aluminum's position on the periodic table relate to its properties? i mean like how does it effect it's properties? thank you

    asked on November 24, 2012
  19. math

    what is the difference btwn 5^3 and (5)^3? When ever they have a question in which they have a a number squared and then they have another question right after it asking the difference between the same question in parenthesis..is it a trick question? is

    asked on November 24, 2012
  20. Physics. Free electron density, please help!

    A length of wire has a radius of 3.00 × 10-3 m and a resistance of 0.200 Ω. When the potential difference across the wire is 10.0 V, the electron drift speed is found to be 2.98 × 10-4 m/s. On the basis of these data, calculate the density of free

    asked on November 22, 2012
  21. chemistry help!!

    For each of the following pairs, indicate which element has the larger first ionization energy Mg or Al. i put Mg. Repulsion of paired electrons in Mg is more significant than Al's higher effective nuclear charge. but got it wrong. Al. Repulsion of paired

    asked on November 20, 2012
  22. chem

    Write the condensed electron configurations for the following atoms and indicate how many unpaired electrons each has. for Ca and Y for Ca i got [Ar] 4s2 but it got cuonted wrong

    asked on November 19, 2012
  23. algebra

    An investor invested a total of $2,600 in two mutual funds. One fund earned a 5% profit while the other earned a 3% profit. If the investor's total profit was $98, how much was invested in each mutual fund? The amount invested in the mutual fund that

    asked on November 18, 2012
  24. algebra

    An investor invested a total of $500 in two mutual funds. One fund earned a 8% profit while the other earned a 4% profit. If the investor's total profit was $32, how much was invested in each mutual fund? The amount invested in the mutual fund that earned

    asked on November 17, 2012
  25. chem

    Among the elementary subatomic particles of physics is the muon, which decays within a few nanoseconds after formation. The muon has a rest mass 1.126 109 times that of a proton. Calculate the de Broglie wavelength associated with a muon traveling at a

    asked on November 14, 2012
  26. IT 235

    Post your response to the following questions: For which types of image creations might it be beneficial or necessary to add text? Which text effects do you like to use? How will your final project include text?

    asked on November 14, 2012
  27. chem

    If the detector is capturing 6. 107 photons per second at this wavelength, 1820 nm. what is the total energy of the photons detected in one hour? I got 2e7 but its wrong

    asked on November 13, 2012
  28. Physics

    A string that passes over a pulley has a 0.373 kg mass attached to one end and a 0.620 kg mass attached to the other end. The pulley, which is a disk of radius 9.50 cm, has friction in its axle. What is the magnitude of the frictional torque that must be

    asked on November 12, 2012
  29. algebra

    It takes a passenger train 2 hours less time than it takes a freight train to make the trip from Central City to Clear Creek. The passenger train averages 96mi/hr while the freight train averages 64mi/hr. How far is it from Central City to Clear Creek?

    asked on November 12, 2012
  30. MAT 116

    A tugboat goes 180 miles upstream in 10 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.

    asked on November 11, 2012
  31. MAT 116

    The perimeter of a rectangle is 28 ft. The length is 10 ft longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width.

    asked on November 11, 2012
  32. chem

    calculate the delta H for 3 Fe(s) + 4 CO2(g) ¨ 4 CO(g) + Fe3O4(s)

    asked on November 8, 2012
  33. Physical Education

    Tom served to Sue, who set up Stacey for a spike. Stacey went up for the spike and hit it into the ground on Team A's side. In the process of spiking the ball, Stacey hit the net with her hand. Who won the point and why?

    asked on November 7, 2012
  34. Science

    Many portable gas heaters and grills use propane, C3H8(g), as a fuel. Using standard enthalpies of formation, calculate the quantity of heat produced when 11.90 g of propane is completely combusted in air under standard conditions. I got -600 kj but its

    asked on November 7, 2012
  35. algebra

    Camille can swim against the current at 1.5 m/s and with the current at 3.5m/s. Write an equation that expresses each fact. How fast can she swim in still water?

    asked on November 7, 2012
  36. algebra

    Camille can swim against the current at 1.5m/s and with the current at 3.5m/s. Write and equation that expresses each fact. How fast can she swim in still water?

    asked on November 7, 2012
  37. algebra

    The 4200 km trip from New York to San Francisco take 6 h flying against the wind but only 5 h returning. Find the speed of the plane in still air and the speed of the wind.

    asked on November 7, 2012
  38. science(reading)

    "he proved the existence of neutrons - elementary particles devoid of any electrical charge. In contrast with the helium nuclei (alpha rays) which are charged, and therefore repelled by the considerable electrical forces present in the nuclei of heavy

    asked on November 2, 2012
  39. US HISTORY I

    A New World to the American Revolution Directions: IDENTIFY and give the SIGNIFICANCE of 5 of the 7 terms below. (Caveat! Be thorough! An IDENTIFICATION should answer the four criteria 1.What? 2.Where? 3.When? and 4.Results?, while the SIGNIFICANCE should

    asked on November 1, 2012
  40. Physics

    A 190-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the

    asked on October 31, 2012
  41. Science

    I need help with coming up a hypothesis for and Organic Compound lab! Anyone have an idea?

    asked on October 25, 2012
  42. physics

    Block 1, of mass1 = 0.550kg , is connected over an ideal (massless and frictionless) pulley to block 2, of mass2 , as shown. For an angle of = 30.0 and a coefficient of kinetic friction between block 2 and the plane of = 0.300mu(kinetic friction), an

    asked on October 23, 2012
  43. Math

    Suppose C(x) measures an economy's personal consumption expenditure and x the personal income, both in billions of dollars. Then the following function measures the economy's savings corresponding to an income of x billion dollars. S(x) = x - C(x) (Income

    asked on October 19, 2012
  44. math

    The weekly demand for the Pulsar 25 color LED television is represented by p, where p denotes the wholesale unit price in dollars and x denotes the quantity demanded. The weekly total cost function associated with manufacturing the Pulsar 25 is given by

    asked on October 19, 2012
  45. earth

    The global-mean surface temperature of the earth is about 288 degrees Kelvin. Use the Stefan-Boltzman law to calculate the radiative flux corresponding to an object with this temperature. [hint: use σT4 with σ = 5.67x10-8 Wm-2K-4 ]

    asked on October 15, 2012
  46. chemistry

    In a bunsen burner experiment, when you place a piece of soot covered chalk over the hottest part of the flame, it changes back to a white color. What is the equation for this process? Thank you

    asked on October 11, 2012
  47. reading

    why do the Lina and Doon think tat their arrival has been expected, in the book CITY OF EMBER

    asked on October 10, 2012
  48. Chemistry

    if there are 8.3grams of Mg used, how many moles of MgO can you expect to be produced?

    asked on October 4, 2012
  49. DEBATE

    How would you present a uniqueness, link,or impact in a policy debate? Someone told me that during the cross examination period. You are supposed to ask a question and once receive the answer you are given permission to add the link but, i forgot how the

    asked on October 2, 2012
  50. Biology

    1. How is both the external and internal stimuli involved in doing this: You are hungry so you reach for an apple in a fruit bowl. 2. Why is a hypothesis important to controlled experiments? Is it becasue you are trying to explain the effect that it would

    asked on September 28, 2012
  51. Physics

    Your car can accelerate at 5m/^2 without a trailer. You add a trailer to your car that has 3 times the mass of your car. At what rate can your car (plus trailer) accelerate now? After accelerating the car travels at a constant speed of 30 m/s. What is the

    asked on September 23, 2012
  52. advanced functions math

    You buy a car in 2005 for $7860 and it depreciates linearly. You sell the car for $5040 in 2011.... what does the domain represent in the function? what does the range represent in this function? what is the slope of the linear representation? what is the

    asked on September 19, 2012
  53. advanced functions math

    You buy a car in 2005 for $7860 and it depreciates linearly. You sell the car for $5040 in 2011.... what does the domain represent in the function? what does the range represent in this function? what is the slope of the linear representation? what is the

    asked on September 19, 2012
  54. Math

    Restaurants charge about 3 times the cost of food for items on the menu. A restaurant pays $7 per pound for fish, $2 for a dozen lemons, and $6 for parsley. If 2 fish dinners can be made from this, how much would this meal costs? My answer is $36

    asked on September 12, 2012
  55. General

    This is a question to everybody: I was just wondering if anyone had any science related questions or things they wonder about that may require experiments. If you have any ideas please mention them. I need this for a science for a science fair project and

    asked on September 6, 2012
  56. algebra

    1/7x-x=-1/7(2x+84)

    asked on September 6, 2012
  57. algebra

    Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane -x/3 f(x)=4+e ( if this makes sense, not sure how else to show it. the -x/3 is after the e like -x/3 to

    asked on August 28, 2012
  58. college algebra

    Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane f(x)=4+e^-x/3 please help me! show steps also, if i an just given an answer that wont help me! thanks in

    asked on August 28, 2012
  59. math

    f(x)=-2x3+20x2-48x =(?)(-2x)(X-6) how do I find the missing factor of this?

    asked on August 20, 2012
  60. Politics/Debate

    are there some important things about domestic infrastructure we should worry or know about? How does demestic infrastructure help us in a positive way and also in a negative way? why would someone negate the substantial increase in development for

    asked on August 10, 2012
  61. Politics/Debate

    what does this sentence mean in regular english "The United States Federal Government should substantially increase development of domestic infrastructure." and what is the basic meaning of domestic infrastructure? Tahnk you soo much in advance!!

    asked on August 9, 2012
  62. college statistic

    A sample of 51 night-school students' ages is obtained in order to estimate the mean age of night-school students. x = 26 years. The population variance is 19. (a) Give a point estimate for μ. (Give your answer correct to one decimal place.) (b) Find the

    asked on July 23, 2012
  63. college

    Consider a normal population with μ = 36 and σ = 4.9. Calculate the z-score for an x of 47.6 from a sample of size 14. (Give your answer correct to two decimal places.)

    asked on July 23, 2012
  64. John jay college

    A random sample of n = 9 scores is obtained from a population with μ = 50 and σ = 9. If the sample mean is M = 59, what is the z-score corresponding to the sample mean? z = 3.00 z = 1.00     z = 9.00 cannot determine without additional information

    asked on July 22, 2012
  65. John jay college

    A random sample of n = 9 scores is obtained from a population with μ = 50 and σ = 9. If the sample mean is M = 59, what is the z-score corresponding to the sample mean?

    asked on July 22, 2012
  66. college math

    The ratio of soda to diet soda in Bill's Supermarket is 8 to 9. If a person counted 72 bottles of soda, how many bottles of diet soda are there?

    asked on July 19, 2012
  67. Personal Finance

    During a job interview Pam Thompson is offered a salary of $2800. The company gives annual raises of 6 percent. What would be Pams salery during her 5th year on the job?

    asked on July 16, 2012
  68. Math

    The average (arithmetic mean) and median of the five numbers a,a,b,c, and c are 20 and 30, respectively. If a < b < c, what is the value of a + c?

    asked on July 11, 2012
  69. Math

    If it takes 6 minutes to travel from point A to point B at a constant speed of 60 miles per hour, how many minutes does it take to travel the same route from point A to point B at a constant speed of 50 miles per hour?

    asked on July 11, 2012
  70. Math

    f(x) = 1/3x + 3 and g(x) = x - 2 The functions f and g above are defined for all values of x. In the xy-plane, what is the y-coordinate of the point of intersection of the graphs of f and g?

    asked on July 11, 2012
  71. Math

    if (a^6 x a^6)^k = (a^3)^(k+5), solve for k

    asked on July 11, 2012
  72. Math

    At a company, there are y more male employees than female employees. If there are x male employees at the company, what fraction of the employees are male, in terms of y and x?

    asked on July 11, 2012
  73. english

    Snow skiing is a very exciting sport. what type if sentence pattern is this? S-v,s-v-io, s-v-io-do,e-v-s,s-lv-pn,s-lv-pa, s-v-do-oc, question pattern

    asked on July 10, 2012
  74. math

    Solve the following problem. Round answer to two decimal places when necessary. I=240 W=1/3 A=1*W A=

    asked on July 3, 2012
  75. Management

    Critical thinking is very important in making decisions that impact an organization’s growth and survival. Which of the following traits of a critical thinker is essential in this process?

    asked on June 8, 2012
  76. science

    what do you call a river or stream that runs or flows really fast?

    asked on June 8, 2012
  77. chemistry

    what mass of acetylene, C2H2, will be produced from the reaction of 90 g of calcium carbide, CaC2, with water in the following reaction? CaC2+2H2O-->C2H2+Ca(OH)2

    asked on May 28, 2012
  78. Chemistry

    An etheral solution contains benzoic acid, 9-fluorenone, abd ethyl 4-aminobenzoate. Why would benzoic acid and 9-fluorenone not be extracted from this etheral solution by aqueous HCl ?

    asked on May 15, 2012
  79. algerbra 2

    What did the baby pocupine say when it backed into a cactus?

    asked on May 13, 2012
  80. computers

    Imagine that you have been hired as an IT consultant and have been asked to write a recommendation for an OS. This start-up company primarily develops games and has approached you to recommend an OS for its 25 employees who use desktop PCs. The primary

    asked on May 11, 2012
  81. algebra 2

    Solve the inequality (x-3)/(2x+1)>0

    asked on May 2, 2012
  82. Math

    There are 40 tags numbered one through 40 in a bag. What is the propability that Glen will randomly pick a multiple of 5 and then a multiple of 9 without replacing the first tag?

    asked on May 2, 2012
  83. Science

    Changing the current changes the ___ of an electromagnet. Choices are: A. strength B. direction C. charge D. both a and b

    asked on April 17, 2012
  84. Math

    I need help trying to write out these binomial expansions: they all need to be raised to the 8th power. Thanks 1. (x + y) 2. (w + z) 3. (x - y) 4. (2a + 3b) - Now explain how your answer for #1 could be used as a formula to help you answer each of the

    asked on April 16, 2012
  85. Chemistry

    I need help with this in order to correctly complete my other related problems. Thank you so much in advance =) Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN,

    asked on April 15, 2012
  86. Chemistry

    I need help with this in order to correctly complete my other related problems. Thank you so much in advance =) Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN,

    asked on April 15, 2012
  87. History

    Q: Which governmental position was NOT held by James F. Byrnes? Choices are: A. U.S. Secretary of State B. U.S. Supreme Court justice C. governor of South Carolina D. vice president of the United States

    asked on April 15, 2012
  88. History

    Q: What action did the United States NOT take against Japan before the attack on Pearl Harbor? Choices are: A. cut off the sale of oil and metal to Japan B. sent the Japanese ambassador back to Japan C. froze all the Japanese assets in the United States D.

    asked on April 15, 2012
  89. MATH

    What is the sum of (x^2-3x+2) and (5x^2-3x-8)? show your work help me!!!

    asked on April 15, 2012
  90. math

    Two prisms are similar. The surface area of one is four times the surface area of the other. What is the ratio of the corresponding dimensions?

    asked on April 13, 2012
  91. math

    A snailis trying to climb up a cup left by some students that littered.Each hour the snail slithers up 2`` but when he is tired he sleeps and slides 1``. How many hours until he reaches the top of the cup with a height of 10 is this an integer question?

    asked on April 12, 2012
  92. math patterning

    Look over the following sequence of numbers. What are the next 3 numbers in the pattern?what is the pattern rule? -1,0,1,0,1,2,3,6,11,20,37

    asked on April 12, 2012
  93. Algrebra

    I need to find the approximate surface area of a cone with the R=5 and L=6. I thought I figured it out by 3.14(5)(6) which will give me 94.2 I then would take 94.2 +3.14(5)squared and I came up with 172.7, but my answer should be either 20m squared, 98m

    asked on April 9, 2012
  94. Calculus

    Let L1 be the line with the vector equation r= (-2,3) +s(-1,3), seR. Let L2 be with the line with parametric equation x=3t+2, y=t-7, teR. Are L1 and L2 perpendicular? How do you know?

    asked on April 8, 2012
  95. Western experience

    All of the following are late-twentieth century technological developments that have revolutionized communication except A) development of the world wide web B) development of the personal computer C) development of calculating machinery D) development of

    asked on April 4, 2012
  96. biology

    I have the fetal pig test on muscles in AP biology class coming up soon. And I was wondering if anyone knows any good online sites where thye give pictures and i can practice labeling the muscles on the pig.. thanks

    asked on April 1, 2012
  97. PLEASE HELP!!!

    Hi, I'm doing a science fair and they're asking us to put pictures of us doing experiments or to bring in a model. In my project I experimented on people so was I supposed to take pictures of people performing the tasks? I already did the project and

    asked on March 31, 2012
  98. science fair

    Hi, I'm doing a science fair and they're asking us to put pictures of us doing experiments or to bring in a model. In my project I experimented on people so was I supposed to take pictures of people performing the tasks? I already did the project and

    asked on March 31, 2012
  99. History

    Why was South Carolina placed under military control? I think it is because it refused to ratify the 13th Amendment, but I am not sure.

    asked on March 29, 2012
  100. Algebra

    If a football field's length is 120 yds. and its width is 53 1/3 yards and a soccer field's lenght is 130 yds and its width is 100 yards how many times the area of the small field is the area of the larger field? I multiplied the length x width and got

    asked on March 29, 2012

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