1. Biology

    Can someone please check if my answers are correct? 21. The difference between autotroph and heterotroph is that a. heterotrophs must get energy from sources other than the sun b. heterotrophs can use chemical or light energy sources c. heterotrophs do not

    asked by mysterychicken on January 22, 2010
  2. Business 318

    8. An open systems perspective places great significance on understanding the relationship between an organization and its __________. (Points : 1) personnel practices. internal resources. chain of command. capital structure. environment.

    asked by Joan on May 11, 2015
  3. mgt

    help explain how organizational design like geographical, functional, customer-based, product, service, hybird, matrix, marketing channel helps determine which structure best suits target stores organizations needs.

    asked by at on October 25, 2011
  4. English

    I need help putting my thesis into "parallel grammatical structure". Children should be limited on the amount of television they watch because not only is it filled with bad influences but it causes them behavior problems, and ultimately puts their health

    asked by Kayla on November 29, 2010
  5. english

    Winds stampeding the feilds under the window . Floundering back astride and blinding wet. Till day rose; then under an orange sky. ~ comment on the poets use of sentance structure i have no idea how to answer this could you please help me ?

    asked by Kerryann on February 24, 2010
  6. structural design

    ASHI standards require a home inspector to identify and describe the type of structure and materials of construction before A. testing systems scientifically. B. evaluating each system. C. establishing value. D. reporting remaining usefulness.

    asked by darian on March 1, 2014
  7. English 4

    Parallel structure is the A. use of lines that are all more or less the same length. B. dispersal of thematic elements evenly throughout a work. C. balanced arrangement of stanzas in the sections of a narrative poem. D. use of repeated words, phrases, or

    asked by Ciara on April 23, 2015
  8. Sociology

    the variable that sociologists exphasize the most as being the determining motivation for our thinking and behavior? A. Random chance events B. Natural born in instincts C. Inherited genetic structure D. ones society and social location My answer is D is

    asked by tricica on September 28, 2010
  9. Science (Human Anatomy)

    THIS QUESTION IS WORTH 50 MARKS I NEED SOURCES AS WELL Relate their structure of a neuron to the anatomy of the cerebral cortex and spinal cord Be sure to discuss the locations of soma, axons, dendrites, and supportive cells in each area.

    asked by jawed hakimi on October 20, 2012
  10. Chemistry

    1. Chemistry is the study of the composition, structure and properties of substances.- F? 21. Which is found in the nucleus-- Protons or neutrons? 27. Copper metal is: a. poor conductors b. brittle c. malleable C? 44. What is the charge on most polyatomic

    asked by mysterychicken on October 25, 2010
  11. Algebra

    1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within

    asked by A.W. on February 1, 2009
  12. science

    The Australian grass tree, from the genus Xanthorrhoea in the lily family, grows to a height of about 4.5 m, bears long narrow leaves in a tuft at the top of the trunk, and produces yellow or white flowers in a spike above the leaves. A yellow-flowered

    asked by jiskhaweekend on January 18, 2014
  13. Math

    In order to get to school carly must first take take a bus 12 miles due east. she then gets off that bus and take another bus 9 miles due north in order to reach the school building. if there were a single bus traveling northeast that could take directly

    asked by Mcgraw on August 21, 2012
  14. Maths

    Let f(x)= x^5-5x+3 1-Find f'(x) and f"(x). 2-Find the intervals on which f(x) is increasing or decreasing. 3-Find the local maximum and minimum of f(x), if any. 4-Find the intervals on which the graph of f(x) is concave up or concave down. 5-Find the

    asked by Haneen on December 1, 2014
  15. Science

    An experimental model rocket has a mass of 0.054kg. The fuel that was used in one test had 215J of chemical potential energy. When the rocket reached an altitude of 119m, it was travelling at 48m/s and still rising. With what efficiency did the rocket

    asked by Annie helpppp on November 9, 2015
  16. Physics

    An experimental model rocket has a mass of 0.054kg. The fuel that was used in one test had 215J of chemical potential energy. When the rocket reached an altitude of 119m, it was travelling at 48m/s and still rising. With what efficiency did the rocket

    asked by Annie on November 9, 2015
  17. organic chemistry

    I really need help with this question. It is located at the link below. Question #2. I understand the general reaction but I need help with the actual mechanism. Olopatadine is a drug used topically to treat the itching associated with conjuctivitis It is

    asked by ha on January 21, 2013
  18. Computers

    Help guys..here is what I need.. and unfortunately I need this in like 2 hours...my computer crashed with all my work so please anyone help... Write a console application that has a furniture and appliance dealership needs you to create a sales screen to

    asked by Kevin on May 6, 2013
  19. finance (operational efficiency)

    The best indication of the operational effiency of management is? A. net income B. earnings per share C. EBIT D. gross profit I like net income as a metric for measuring operational efficiency of management. The amout of money a corporation has after all

    asked by Jason on July 26, 2008
  20. English

    Can you please check the following sentences, please. It's really urgent. 1) Following what Joyce had already done in England and Proust in France, and what, in some way, Sterne had attempted as early as two centuries before, Virginia Woolf therefore

    asked by Mike on April 6, 2011
  21. Physics-10

    A vehicle that weighs 400N on the surface of the earth is traveling in outer space at a speed of 400m/s. it can be stopped by applying a constant force of 20N for?

    asked by Stanley on March 4, 2011
  22. Art

    Which element in the image The Annunciation by Jan van Eyck, creates an emphasis on the female figure? A. Form B. Texture C. Space D. Color Is the answer D?

    asked by Gwen on September 15, 2014
  23. Physics

    A small charge that has lost 5.0 X 10^3 electrons and has a mass of 2.0 x 10^-6 kg experiences an acceleration of 15ms^2 when placed at a point P in space. Determine the magnitude and direction of the electric field at P

    asked by James on June 4, 2014
  24. Algebra

    We are learning using the log button in algebra. I have a TI-83 calculator. My book says that log10 85 (there is no space between thet 10 and the 85, that's just to show the different numbers) is equal to 1.93 approximately. But I got 85. How do you

    asked by Tatiana on January 17, 2009
  25. Child Care Managment

    which of the following is is best suited to a formative assessment of progress? A, muscular strngth and endurance B body fat analysis C. Flexibility D awareness of selfand space. I think is A. But if Im wrong can somebody help me. thanks.

    asked by Alex on August 19, 2011
  26. concept development

    Free play, eating a snack, painting, hearing a story, and so forth are related to which of the following learning concepts? A. Space B. Classification C. Size D. Time my answer is d.

    asked by Daniella on January 24, 2015
  27. Science

    1.If the current (in amps) remains the same, but the voltage increases, what effect does this have on the power (in watts) consumed by some device? 2.How is the dimension of time different from the dimensions defining space?

    asked by Leo on May 11, 2015
  28. Physics

    Steel railroad tracks of length L = 18.30 m are laid at 10.0° C. How much space should be left between the track sections if they are to just touch when the temperature is T = 49.0° C? mm Please help. I have tried this L° α Δt = 18.3 * 13 10^-6 * (49

    asked by Amy on April 20, 2012
  29. Physics

    Which of the following is an example of projectile motion? a jet lifting off a runway a thrown baseball an aluminum can dropped straight down into the recycling bin a space shuttle being launched I think it's b, but I'm not sure.

    asked by Anonymous on September 13, 2011
  30. PHYSICS

    A plane electromagnetic wave moving through free space has an E- field given by E_x=0; E_y=0; E_z=100 sin[8π×〖10〗^14 (t- x/(3×〖10〗^8 ))]. Calculate the corresponding flux density.

    asked by NOONY on November 22, 2015
  31. Physics

    An astronaut takes a space trip to newly discovered palnet X. measurements from earth indicate that: Mx=3Me and Rx=2Re. What is the acceleration of gracity gx on this planet as a multiple of ge?

    asked by anne on May 18, 2011
  32. English

    Hello. Please help me with the following structures: 1)is it possible to use "going to" after "expect" or only "will", for example "it's expected that they are going to discuss" or only "it's expected that they will discuss / will be discussing"? 2)are the

    asked by Ilma on May 13, 2011
  33. Psychology

    This the question; Jung believed that the persona, anima/animus, and shadow were some of the archetypes that had evolved so completely that they could be considered separate systems within the personality. Which list below best describes those archetypes

    asked by Diane on June 29, 2013
  34. English

    1. She still isn’t ready. 2. She still is not ready. 3. She is still not ready. 4. I still don't like chestnuts. 5. I still can't remember them. 6. I still do not like chestnuts. ----------------------------- This question is about the word order of

    asked by rfvv on October 23, 2017
  35. math

    A burger restaurant advertises that there are 96 possible ways to order your burger, assuming you have it on a white, wheat or sourdough bun. How many ways can you order a burger on a sourdough bun?

    asked by jae on September 9, 2013
  36. Chemistry

    Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) is: 4Fe(s)+3O2(g)

    asked by Kaylene on February 22, 2010
  37. chemistry please help

    Calculate the lattice energy of potassium oxide from the following data: Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond energy of oxygen: +498 kJ/mol First ionization energy of potassium: +419 kJ/mol 1st electron affinity of oxygen: -141 kJ/mol

    asked by Joanie on April 17, 2011
  38. CHEM please!!! help

    Calculate the lattice energy of potassium oxide from the following data: Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond energy of oxygen: +498 kJ/mol First ionization energy of potassium: +419 kJ/mol 1st electron affinity of oxygen: -141 kJ/mol

    asked by Joanie on April 19, 2011
  39. Physics

    Can someone post numerical answers!! Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15

    asked by Ron on April 8, 2010
  40. Physics

    1. A steam engine converts 150 kg of water completely to steam. The process involves transfer of 4 x 10^8 J as heat. If steam escaping through the safety valve does 2 x 10^8 J of work against outside atmosphere, the net change in the internal energy is: a.

    asked by Helen on December 20, 2015
  41. business

    • The acquisition cost is $35,000 paid at the time of installation. • It reduces the wait staff by one person: Figure $10 per hour, or 2020 hours per year + 18% benefits. • Money costs are 7% • The system may become obsolete in three years. a.

    asked by Tanya on July 23, 2010
  42. Genetics

    Need help figure out the order of GENES. Okey here is the info Bacterial cells of genotype pur- pro+ his+ were transduce with P1 bacteriophage grown on bacteria of genotype pur+ pro- his-. Transductants containing pur+ were selected and tested for the

    asked by Amphee on December 10, 2010
  43. College Critical Reading

    Can someone please let me know if I am right on these True/ False questions. I like to make sure that I am understanding this information. Thanks in advance for your help ;-) 1. Journalism has professional values of striving for subjectivity, currency,

    asked by Jessie on October 26, 2010
  44. Science

    Which experimental approach would be the most effective and easiest to clearly determine the evolutionary relationship between these two organisms? An image of an orange sea star is shown. A photo shows a bright green snake wrapped around a branch. A.

    asked by Anonymous on October 29, 2018
  45. help help 9 physics) i need an aswer fast!

    a 0.5 m^2 solar collector radiation from the sun and focuses it on 250g of water that is inially at 23 degrees . the average intensity of radiation arriving from the sun at this location is 550 Wm^-2. if you assume that this is collected with 100%

    asked by H.T on April 28, 2011
  46. help Fast ( physics)

    a 0.5 m^2 solar collector radiation from the sun and focuses it on 250g of water that is inially at 23 degrees . the average intensity of radiation arriving from the sun at this location is 550 Wm^-2. if you assume that this is collected with 100%

    asked by H.T on April 27, 2011
  47. Physics

    A ball is thrown upward and allow to fall under the influence of gravity. We will ignore the effects of air resistance. We consider three times: Time A, when the ball is first thrown upward, Time B when the ball reaches the peak, and Time C when the ball

    asked by Casey on June 18, 2011
  48. Macro economics

    5. The problem of determining what goods and services society should produce: A.exists because we can produce more than we need or want. B.exists because there are not enough resources to provide all the goods and services that people want to purchase.

    asked by Johnny on June 18, 2009
  49. organic chem

    Amide formation: draw the structure (or provide the IUPAC name) of the amide formed (appropriate coupling reagent required) between benzoic acid and N-ethyl ethanamine (diethyl amine)

    asked by meghan on March 5, 2013
  50. Chemistry

    If I am given a molecular hydrocarbon structure, how would I be able to tell how sp3 hybridized carbons it possesses? Like my current question asks How many sp3-hydridized carbon atoms does 11-cis-retinal possess?

    asked by Raj on January 27, 2008
  51. SOC 101

    Social settings of the different forms of social structure described by Durkheim, Tonnies, and Lenski is quite interesting. Please tell me the likes and differences of these sociologists. I cannot understand the extrememly complicated jargon while

    asked by Gia on October 20, 2010
  52. English

    How can I rewrite this sentence using parallel structure? The stirring closing paragraph is the formal pronouncement of independence and borrowed from the resolution of independence adopted by congress July 2, 1776.

    asked by Sarah on March 11, 2017
  53. Chemistry

    Gold crystallizes in a face centered cubic structure. Using only a periodic table for refrence, determine the edge length of a gold unit cell. Show all Work.

    asked by Josh on February 22, 2010
  54. organic chem

    looking at this h nmr spectra of 4 isomeric alcohols with the formula c5h12o, make a suitable structure for each spectrum and assign h nmr signals for each H in the molecule i.imgur. com/MTHt3. png

    asked by kev on September 16, 2012
  55. economics

    Clearly explain the different market structure and how they determine the degree of competition among firms and how they maximise profits in the short run and long run Cite the source within the text and bibliography

    asked by james on October 20, 2013
  56. biology

    Briefly describe the structure and function of three different cellular systems that combine proteins along with necessary RNAs to catalyze covalent bond formation and/or hydrolysis reactions (i.e., function as ribozymes)?

    asked by biology help on March 1, 2013
  57. lewis structure for molecules

    HELLO, I AM LOOKING FOR ONLINE EXERCISES/WORSHEETS TAT I CAN USE TO PRACTISE HOW TO DRAW lewis structure for molecules. I AM LOOKING FOR RELABLE SOURCES, I DON'T WANT TO USE JUST ANY WEBSITE BECAUSE I'M AFRAID THEY WILL CONTAIN ERRORS? COULD SOME ONE

    asked by ME on June 21, 2009
  58. Chemistry (geometric)

    Calculate the number of cations anions, and formula units per cell unit of the following : rock-salt structure, and flourite....I have no idea how to do the second one but for the first one I got 13, 14, and 13.5 respectively. Also, what are the

    asked by Sarah on October 25, 2010
  59. geology

    We determine the structure of the Earth's core using: a)deep mine shafts b)satellite imaging c)radar and sonar d)seismic wave data e)magnetic resonance imaging

    asked by Layla on September 27, 2010
  60. Chemistry

    How would I go about creating a Lewis Dot structure for the Calcium Carbonate and Magnesium Hydroxide? I know how to do it for any compound with two elements such as SF5, but I don't know how to approach it when there's a polyatomic ion involved and there

    asked by Ezra on November 6, 2012
  61. Science

    We determine the structure of the Earth's core using ? deep mine shafts. satellite imaging. radar and sonar. seismic wave data. magnetic resonance imaging.

    asked by Anonymous on February 21, 2011
  62. Science

    What is the structure that directs chromosome movement during mitosis and aids in the formation of the microtubule scaffolding that pulls on the chromosomes? a. Centrosome (maybe) b. Nucleosome (don't think so) c. Spindle (maybe) d. Cytokinesis(don't think

    asked by David on November 8, 2013
  63. Intro Biology

    I can't find examples in the book as reference. Please help me with these questions and explain why. 1.) Which of the following has no vascular tissue (“plumbing system”)? A) Conifer B) Angiosperm C) Fern D) Moss E) Ginkgo 2.) Which of the following

    asked by Andrew on November 26, 2014
  64. MATH

    4. The population of a small town is modelled by the function p(t)= 20(4t+3)/2t+5 , where P(t) is the population, in thousands, and t is time, in years, since the start of 1990. a) Is the population currently increasing or decreasing? Justify your answer.

    asked by FUNCTIONS on July 7, 2013
  65. MATH

    4. The population of a small town is modelled by the function p(t)= 20(4t+3)/2t+5 , where P(t) is the population, in thousands, and t is time, in years, since the start of 1990. a) Is the population currently increasing or decreasing? Justify your answer.

    asked by FUNCTIONS on July 8, 2013
  66. math

    The population of a small town is modelled by the function p(t)= 20(4t+3)/2t+5 , where P(t) is the population, in thousands, and t is time, in years, since the start of 1990. a) Is the population currently increasing or decreasing? Justify your answer. b)

    asked by FUNCTIONS on July 9, 2013
  67. Calculus

    Water is leaking from the bottom of a tank in the shape of an inverted cone having an altitude of 12 feet and a radius of 2 feet. If the water is leaking at the rate of 0.25 cubic feet per minute, how fast is the water level decreasing when the water is 4

    asked by Jake on June 23, 2014
  68. math

    A rocket is fired into the air with an initial velocity of 98 m/s. The height ( h ) of the rocket after t seconds is given by the expression h = 98t - 4.9t2. a. What the average rate of change over the first 2 seconds. b. At what point does the rocket

    asked by sdtvds on October 30, 2018
  69. Clac- math

    a 20 foot ladder leaning up against a vertical wall begins to slip. the base of the ladder makes an acute angle with the floor. when the angle equals 60 degrees the angle is decreasing at 0.1 radians/second. find the rate at which the height of th upper

    asked by Nikki on March 2, 2012
  70. maths

    For the following graph: a. Find the domain of f. b. Find the range of f. c. Find the x-intercepts. d. Find the y-intercept. e. Find the intervals over which f is increasing. f. Find the intervals over which f is decreasing. g. Find the intervals over

    asked by seth on February 18, 2013
  71. Math

    When given that the attendance to Taylor Swift concerts had been decreasing at a rate of 2% from 2009-2013. If the average attendance at her concerts in 2013 was 20,480 what would be the attendance in 2009? Also, what would be the domain and range?

    asked by Anonymous on March 12, 2014
  72. Calculus

    Consider the function f(x)=xlnx. For the following questions, write inf for ∞, -inf for −∞, and None if no such answer exists. a.) The domain of this function is . b.) The x-intercept is . c.) f′(x) = . d.) f(x) is increasing on the interval and

    asked by Nicola on November 28, 2011
  73. calculus 1

    f(x) = 3x^3 - 9x + 5 find the: 1) zeroes or undefined values 2) intervals where the function is greater than zero 3) intervals where the function is less than zero 4) coordinates of all maxima and minima 5) intervals where the function is increasing 6)

    asked by i on March 3, 2016
  74. Precalculus

    Find the values of x and y. Matrices.. [-4 2 3 5 3 5 2 -3 1] TIMES [2 x 5] EQUALS [9 38 y] It is difficult for me to type the matrices in but.... The first matrix is 3x3 consisting of -4,2,3 in the first row.. 5,3,5 in the second row ......2,-3,1 in the

    asked by Anonymous on May 22, 2014
  75. Physics

    A 975 N object is pulled at a constant velocity up an incline with a force of 327 N parallel to the incline as shown in the diagram. Assume that the difference between the work output and the work input is the work required to overcome friction. a) what is

    asked by Jeremy on April 13, 2011
  76. Math

    Which of the following are the numbers NOT in correct order from SMALLEST to LARGEST? A.)-3.1, -3.5, 0, 0.7, 1.5 B.)-2.3, -1.5, 0.1, 0.33, 0.35 C.)-6.1, -5.33, -4, -0.25, 0 D.)-2.3, -1.5, -0.9, 0, 0.09 PLEASE HELP ME!!! Draw a number line, something like

    asked by Krystal on November 18, 2006
  77. World history; Check:P

    Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most

    asked by Unknown on March 1, 2013
  78. Math, Related Rates

    Consider the hyperbola y = 1/x and think of it as a slide. A particle slides along the hyperbola so that its x-coordinate is increasing at a rate of f(x) units/sec. If its y-coordinate is decreasing at a constant rate of 1 unit/sec, what is f(x)? -I

    asked by xavier on September 10, 2013
  79. Physics

    A.) How much work must be done in order to compress a spring with an elastic constant of 400 lb / in and 1.75 inches? *Note: 1.75" is the compression & 400#/in is the k constant. B.) If 50 ft lbs of work is done on the same spring (in part a) in order to

    asked by Need some help on the set-up, Please! on May 8, 2014
  80. Physics

    A.) How much work must be done in order to compress a spring with an elastic constant of 400 lb / in and 1.75 inches? *Note: 1.75" is the compression & 400#/in is k the constant. B.)If 50 ft lbs of work is done on the same spring (in part a) in order to

    asked by Adam - Require Help Please - Set-up Concerns on May 8, 2014
  81. math help please

    Consider the function g(x)=x/x-7. a) Determine an equation for the vertical asymptote. b) State the domain. c) Determine an equation for the horizontal asymptote. d) State the range. e) Sketch the function. ( i will do it) f) Summarize the increasing and

    asked by & John & on December 11, 2013
  82. Calculus

    A spider is descending vertically at a rate of 0.5 cm/sec. A lizard sits patiently on the ground at a spot 15 cm feet from the shadow of the spider (assume the shadow is directly below the spider). At what rate is the spider’s angle of elevation, θ,

    asked by Jace on July 3, 2016
  83. Astronomy

    Consider dropping a Professor with an estimated mass of 80 kg from a safe, large distance, onto a SMBH with a mass of 10^7M⊙. The Prof makes an impact at the Schwarzschild radius, whereby he converts all of the gained kinetic energy into radiation

    asked by keitanako on March 9, 2014
  84. intergrated rate law chemistry

    The decomposition of ammonia on a platinum surface at 1129 K occurs according to the following reaction: 2NH3 (g) ¨ N2(g) + 3H2(g). Use the following kinetic data which report the variation of ammonia concentration in the gas phase with time to evaluate

    asked by chancy xdicey on September 1, 2016
  85. physics

    The maximum possible efficiency of a heat engine which exhaust its heat at a temperature of 46.0o is 39.0 percent. What is the minimum value of the temperature at which the engine takes in heat? *I think I keep doing a step wrong in here so step by step

    asked by Emma on November 15, 2012
  86. SCIENCE!!!

    Explain how each of the following cell's structure is related to it's function Red blood cell- Nerve cel- Musle cell-

    asked by Ella on November 22, 2008
  87. Biology

    What kind of chemical bond is involved in forming the primary structure of a protein? What type of bond is a peptide bond?

    asked by Sally on September 19, 2018
  88. history

    Describe the social structure and lifestyles of the 1960s Counterculture. How did the Vietnam War influence the Counterculture? Is there a counterculture today?

    asked by will on June 23, 2008
  89. HISTORY135

    Describe the social structure and lifestyles of the 1960's Counterculture. How did the Vietnam War influence the Counterculture? Do you think there is a Counterculture today?

    asked by PARADISE on January 20, 2010
  90. his 135

    Describe the social structure and lifestyles of the 1960’s Counterculture. How did the Vietnam War influence the Counterculture? Do you think there is a counterculture today?

    asked by brandi nicole HELPPPPPP please!!! on March 12, 2010
  91. math

    A company paid $48 for 2 cases of printer paper. Each case contained 12 packages of paper. Next month the company’s office manager needs to order 180 packages of the same paper. If the price per package does not change, what would be the total cost of

    asked by may on May 4, 2016
  92. Chemistry

    Give three substances with different structures and different chemical composition and explain why they are different from each other. If possible, give the chemical composition or formula of the substances. Thanks.

    asked by Perrie on June 26, 2013
  93. 4 Calculus Related-Rates Problems

    1. How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dV/dt, the change in volume with respect to time, which is 15 cubic centimeters per second. The rate

    asked by Angela on January 22, 2018
  94. computers - Programming

    Create a program that uses two parallel one-dimensional arrays. The program displays a shipping charge that is based on the number of items ordered by a customer. The shipping charge scale is shown in Figure 1 below. Store the maximum order amounts in a

    asked by apiz007 on May 6, 2014
  95. science

    how do the words matter, element, atom, crystal, compound, and molucle relate? Matter is composed of elements which are composed of atoms and molecules and these combine to form compounds that may be crystalline. why do leaves turn water a differnt color

    asked by 12345 on January 22, 2007
  96. Language

    a) a song of praise _ _mn b) upright structure; pillar _ _ _ _mn c) convict; find guilty _ _ _ _ _mn

    asked by Curly Sue on December 27, 2011
  97. soc studies 3 questions pls help!!!

    8. Which of the resolutions at Seneca Falls Convention was most inspired by women’s inability to own property? (1 point) desire for improved education in order to understand property contracts belief that women should have voting rights in order to

    asked by TTR+S<3 on March 23, 2014
  98. Chemistry

    Rank the following from most polar to least polar (aspirin, caffeine, ibuprofen, acetaminophen): I am getting caffeine>acetaminophen>aspirin>ibuprofen. Is that correct?

    asked by KC on September 3, 2012
  99. chemistry

    Potassium perchlorate has a lattice energy of -599 kj/mol and a heat of hydration of -548 kj/mol. Find the heat of solution for potassium perchlorate when 10.6 g of potassium perchlorate is dissolved with enough water to make 102.7 ml of solution.

    asked by ella on September 18, 2009
  100. math

    an element has a BCC structure with cell edge of 288pm. the density of the element is 7.2g/cm3. how many atom are present in 208g of the element?

    asked by ahamad sultan on January 1, 2013