1. Anatomy and physiology

    Which of the following is not a phase of hemostasis? Vascular spasm Fibrinolysis Platelet plug formation Coagulation This site should give you that information. (Broken Link Removed)

    asked by Krupa patel on June 17, 2007
  2. Biology

    Different types of plants may be angiosperms, vascular seed, vascular non-seed, or non-vascularplants 1) Short grass meadow----I def. know it's not an angiosperm but can it be vascular non-seed 2) Magwort---im debating if it's non-vascular 3) Chokeberry --

    asked by Sarah on December 10, 2014
  3. Ms sue please help

    Hey ms sue can you please help me to simplify this paragraph? Raynaud's disease occurs when the small arteries (arterioles) that serve the fingers, toes, ears, or nose go into spasm. When arterioles go into spasm, they cut off blood supply and cause digits

    asked by Shreya on May 13, 2013
  4. Raynaud's

    Hey I want to shorten this paragraph out which tells what Raynaud's is, can anyone please simplify it and make it shorter thanks? Raynaud's disease occurs when the small arteries (arterioles) that serve the fingers, toes, ears, or nose go into spasm. When

    asked by Shreya on May 11, 2013
  5. chemistry

    (a) The phase diagram of the binary system, neodymium-scandium (Nd-Sc) is given below. There are two polymorphs in the solid state: α which is hexagonal close packed (HCP) and β which is body-centered cubic (BCC). Identify all phases present at points 1,

    asked by anita on December 17, 2012
  6. Grade 8 SCIENCE!! HELP NEEDED!!

    1)What are the characteristics of vascular plants with seeds?? 2) Why do vascular plants grow larger than non vascular plants??

    asked by ZOLEAHH on October 21, 2009
  7. science

    i need to create a specimen for a diorama using vascular or non-vascular plant don't know how to begin

    asked by djorge on October 15, 2012
  8. science

    during which phase can fertilization occur A. phase 1 B. phase 2 C. phase 3 D. any of the phases *******? more info phase 1 is between 1-7 phase 2 is between 7-14 phase 3 is between 14-28

    asked by coolguy321 on March 17, 2016
  9. science

    please help.....i don't have my txt book with me an i need 2 kno everything bout Non-Vascular and Vascular plants....please rovide a website...........i cant find any

    asked by Angel on April 19, 2011
  10. child

    During which phase of purchasing for your preschool program would you most likely purchase child-sized chairs and tables for the eating area? A. The start-up phase B. The supplemental phase C. The follow-up phase D. The replacement phase answer is a

    asked by lisa on November 3, 2009
  11. SCIENCE

    which of the following allows a plant's vascular system to work as a transport system? A. a plant's vascular system is made up of specialized cells that move around the plants as it grows. B. a plant's vascular system is made up of specialized cells that

    asked by I NEED HELP FAST! on September 28, 2015
  12. science

    which of the following allows a plant's vascular system to work as a transport system? A. a plant's vascular system is made up of specialized cells that move around the plants as it grows. B. a plant's vascular system is made up of specialized cells that

    asked by I NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! on May 22, 2014
  13. Science

    A new cancer fighting agent was discovered in a rare tropical plant. In animals, the substance prevents mitosis by disrupting the formation of microtubules. If the microtubules are not working properly, which of the following is specifically affected? A.

    asked by Failing Science on September 19, 2018
  14. Chemistry

    (a) The phase diagram of the binary system, neodymium-scandium ( Nd-Sc ) is given below. There are two polymorphs in the solid state: alpha which is hexagonal close packed (HCP) and beta which is body-centered cubic (BCC). Identify all phases present at

    asked by Odesa on December 11, 2012
  15. Science

    #1 Which of the following allows a plant's vascular system to work as a transport system? A A plant's vascular system is made up of specialized cells that move around the plant as it grows. B A plants vascular system is made up of specialized cells that

    asked by Maark on January 27, 2015
  16. biology

    Are Lilac flowers vascular or non vascular

    asked by Rose on November 22, 2014
  17. Biology

    Is a Lilac Flower: a) Vascular or non-vascular b) Gymnosperm or angiosperm c) Monocot or a dicot My Work i know c) is dicot but i am not sure of the other two

    asked by Rose on November 20, 2014
  18. Grade 8 SCIENCE

    1. How is the vascular tissue in the stem different from the vascular tissue in the root? 2. Could you explain the relationships between seeds and fruits??

    asked by RAE on October 20, 2009
  19. Science Please Help Me 2

    2. Ferns are the most abundant of the _____ plants; and they produce _______ to reproduce. gymnosperm; sperm seedless vascular; spores* nonvascular; shoots vascular; seeds 3. Which of the following is a reason mosses never grow very tall? lack of cell

    asked by YOLO on March 28, 2015
  20. Science/Math

    I have to figure out what percentasge of time each cell is in a phase. I have 5 phases. That equal to 36 cells in each phase. 1st phase 20 cells 2nd phase 10 cells 3rd phase 3 cells 4th phase 2 cells 5th pase 1 cell. This is based on a 24 hour period and

    asked by sheshe on July 28, 2010
  21. Science

    1. Which of the following is evidence that groundwater cause erosion and deposition ? a) the formation of meanders b) the formation of large boulders in the desert c) the formation of alluvial fans d) the formation of stalagmites and stalactites in caverns

    asked by Anonymous on May 28, 2014
  22. anatomy

    Hemostasis /mechanism or stages

    asked by Anonymous on December 11, 2010
  23. chemistry

    what does it mean by in phase and out of phase for orbitals. Is in phase means that it's bonding and out of phase is antibonding?

    asked by eng on May 12, 2010
  24. astronomy

    Which statement gives the relationship between the waves in the electric and magnetic fields in an electromagnetic wave? a)they are in phase and parrallel to each other in space b)they are 90 degrees out of phase but parrallel in space c)they are in phase

    asked by Anonymous on September 12, 2010
  25. Tech. Ed

    delia is developing a storyboard for her movie about her autoniography. In this lesson you learned about the phases of creating an informative movie. In was phase of movie creation is delia? A. research Phase B. Planning Phase C. Editing Phase D. creation

    asked by Anonymous on March 16, 2015
  26. science

    Ivneed help on Life Science homework. the question is: How do seedless vascular plants reproduce? I don't get it. my other question is: HUH???????????? Vascular plants reproduce by releasing spores. Yes they do and it is actualy fasinateing. ps if any

    asked by INEEDSCIENCEHELPVERYBADLY on February 1, 2007
  27. CHEMISTRY

    Aluminum hydroxide reacts with an excess of hydroxide ions to form the complex ion Al(OH)4- a)Write an equation for this reaction b) Calculate K. c) Determine the solubility of Al(OH)3 in (mol/L) at pH 12.0 My equation was Al(OH)3 + OH- --> Al(OH)4- but

    asked by Jessica on April 11, 2007
  28. science

    what are the arrangement and motions of molecules of substances in the solid phase, liquid phase, and gaseous phase?

    asked by harold on June 10, 2011
  29. Chemistry

    An ion can be removed from an aqueous solution by 1. formation of a precipitate. 2. the formation of a gas that escapes. 3. All of these 4. the formation of what is essentially a nonelectrolyte.

    asked by John on October 4, 2010
  30. chemistry

    An ion can be removed from an aqueous solu- tion by 1. the formation of a gas that escapes. 2. formation of a precipitate. 3. the formation of what is essentially a nonelectrolyte. 4. All of these

    asked by cheri on September 19, 2012
  31. 5th grade science

    Can you check the following? 1. Which statement about vascular plants and non-vascular plants is true? a. vascular plants produce seeds and non-vascular plants produce spores b. both plant types produce cones c. both plant types are considered angiospersm

    asked by Jay on November 29, 2017
  32. biology /check please

    1-What phase are daughter cells in as a result of mitosis? -Anaphase 2- During what phase of mitosis do centromeres divide and the chromosone-mes move toward their respective poles? -prophase 3- Wchich phase of mitosis is the last phase that chromatids are

    asked by marie on February 28, 2010
  33. maths

    I have y=5sin(4x-pie/2). I need too find phase shift. I know c/b is shift. This is pie2/4=.392, but does not equal my answer and I don't know direction it should go. Can anyone help? What do you mean by c/b? What do you mean by pie2/4=.392? What phase

    asked by matt on December 9, 2006
  34. broward college

    collagen vascular disease ,affect the protein collagen ,the main component of collagen fibers. predict the possible consequence of defective collagen fibers on specific organs and tissues how would effect of collagen vascular disease that affected only the

    asked by mina on February 23, 2016
  35. Algebra

    It does, thanks. I'm currently working on solving algebraic equations with two variables (Example: 3x+4y=9). The computer lesson has taught me nothing but to solve the equation by trial and error -- selecting the proper ordered pair from a multiple choice

    asked by Jack on June 20, 2007
  36. science please help

    after the DNA strands are separated, which of the following is the next step of DNA replication in the S phase of the cell cycle? A) Action of helicase B) formation of RNA primer C) Breaking of hydrogen bonds D) joining of nucleotides i think it is either

    asked by john on May 13, 2015
  37. biology can someone check

    1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that

    asked by marie on February 28, 2010
  38. Biology/help please

    1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that

    asked by marie on February 28, 2010
  39. biology

    1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that

    asked by marie on February 28, 2010
  40. BIOLOGY

    1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that

    asked by Marie on February 28, 2010
  41. biology

    1) What phase are daughter cells in as a result of mitosis? answer: Anaphase 2)During what phase of mitosis do centromeres divide and the chromosomes move toward of their respective poles? answer: prophase 3)Which phase of mitosis is the last phase that

    asked by marie on February 28, 2010
  42. aP Chemistry

    The net ionic equation for ALL aqueous reac- tion of strong acids and strong soluble bases that form soluble salts is 1. the formation of the soluble salt. 2. the formation of water from the ele- ments. 3. the formation of H2O from H and OH . 4. the

    asked by Nichole on August 29, 2012
  43. chemistry

    The enthalpy of formation of C2H5OH is -238.7 kJ/mol. What information does this reveal about the bonds in the molecule? A. Bond formation in C2H5OH from its elements only occurs in cold temperatures. B. Bond formation in C2H5OH from its elements does not

    asked by Morgan on December 9, 2014
  44. ap

    The net ionic equation for ALL aqueous reac-tion of strong acids and strong soluble bases that form soluble salts is 1. the formation of H2O from H+ and OH−. 2. the formation of water and the corresponding salt. 3. the formation of water from the

    asked by cheri on October 1, 2012
  45. Biology

    Which of the following is correctly matched with its tissue system? cortex/dermal tissue system cuticle/vascular tissue system phloem/dermal tissue system stele/vascular tissue system>>>> my choosen answer

    asked by Help on February 28, 2014
  46. physics

    Two sinusoidal waves travel in the same direction and have the same frequency. Their amplitudes are Y1 and Y2. The smallest possible amplitude of the resultant wave is: a) Y1 + Y2 and occurs if they are 180 degrees out of phase b)[Y1 - Y2] and occurs if

    asked by susan on February 13, 2007
  47. Chemistry

    Liquid Chromatography lab: Why is it important that the solvent level not drop below the upper level of the stationary phase once the stationary phase is packed in the column. is it because if the stationary phase dries out, then the mixture will be

    asked by Matt on April 13, 2008
  48. TOBOBPURSLEY

    I thought phase shift was theta over omega correct??? and the period equals two pi over omega 40 min = (2pi)/omega omgea = pi/20 min phase shift = theta over omega phase sift = (20?)/pi min now you said phase shift was (35 pi)/40 I do not see why I

    asked by Joe on December 6, 2009
  49. Physical Chemistry

    "Liquids A and B, which have identical molar volumes, are mixed together in equal volumes to form a 75 mL mixture. The liquids are partially miscible and the mixture phase separates into an upper phase with a composition xA=0.45 and a lower phase with a

    asked by Emily on November 19, 2012
  50. Chemistry

    Consider the isomerization equlibria of an alkene (C4H8) that co-exists as three isomers. (These 3 are in an equlibrium triangle) Reaction 1: cis-2-butene ⇔ trans-2-butene Reaction 2: cis-2-butene ⇔ 2-methylpropene Reaction 3: trans-2-butene ⇔

    asked by Gleb on March 3, 2013
  51. science

    When a H II region is observed, it signals what stage in stellar formation? A the initial collapse of the interstellar cloud B the formation of planetary nebulae C the prostar stage D the zero age main sequence stage E depending on their masses the stars

    asked by bolometric on February 8, 2007
  52. geometry!!!! PLEASE HELP!!!!

    There are 300 students at a local high school. On "All Students Exercise Day", Sam, the Physical Education instructor, wants them to line up in a perfect rectangular formation (same number of students in each row). However, there must be more than 1

    asked by flex on May 16, 2013
  53. Physics (please help)

    Two sinusoidal waves travel in the same direction and have the same frequency. Their amplitudes are Y1 and Y2. The smallest possible amplitude of the resultant wave is: a) Y1 + Y2 and occurs if they are 180 degrees out of phase b)[Y1 - Y2] and occurs if

    asked by susan on February 13, 2007
  54. Azeotrope

    I'm having trouble understanding what an azeotrope is. Any clarification is appreciated. Sheryl Two liquids with different boiling points normally can be separated by fractional distillation; i.e., the lower boiling point material boils first and when all

    asked by Sheryl on November 5, 2006
  55. biology

    Explain the vascular system of a lilac flower Some sites would help me very much as i cant find any that explain the vascular system of the lilac flower.

    asked by kai on December 4, 2014
  56. busn 319

    Explain the planning phase and its three steps. Explain the implementation phase and its four components. Explain the evaluation phase.

    asked by larry on October 25, 2011
  57. science help ASAP please

    1. Angiosperms have organs such as ______________ and produce seeds. The are described as _________________plants. (1 point) flowers; vascular stems; pollinated rhizoids; vascular leaves; non-vascular 4. Of the following, which is NOT a characteristic of

    asked by Delilah on April 1, 2013
  58. chemistry

    Once the stationary phase is packed in the column, it is important that the solvent level not drop below the upper level of the stationary phase. Why? A. Air molecules are so polar the entire mixture moves completely through the column. B. If the

    asked by mia on April 12, 2008
  59. physics

    Ali needs to fix plug inside the wall, he then buy a steel plug that is going to be placed in a ring made of aluminium. At 15 degree celcius, the diameter of the plug is 10.765 cm and that of the inside of the ring is 10.432 cm. What common temperature

    asked by ned on January 2, 2014
  60. Chem

    I'm unbelievably stuck on this problem. Any help would be appreciated. Red phosphorous is formed by heating white phosphorous. Calculate the temperature at which the two forms are at equilibrium, given white P: (heat of formation)= 0.00 kj/mol; standard

    asked by Chris on March 4, 2007
  61. calculus

    1. how do u simplify (1/a+h+1 - 1/a+1)/h 2.what's the difference quotient? is it like what u start with e.g. f(x)=1/x+1 or is it the big equation ur suppose to plug it into eg. f(a+h)-f(a)/h or is it what u plug into the f(x)=1/x+1 to get for e.g.

    asked by joe on September 6, 2007
  62. Calc 3

    How do I integrate rcos2theta dr? and then I have to plug in the limits 1 and 2sin2theta for theta and plug what I get from that into a second integral. Help!

    asked by Samantha on April 22, 2011
  63. chemistry

    Calculate the heat of formationof benzene if the heat of combustion of benzene is 3260 kj/mol, given the following enthalpies of formation of the product. enthalpies of formation for O2= 0k (element) enthalpies of formation CO2 = -394kj/mol enthalpies of

    asked by priya on July 18, 2011
  64. i really, really, really need help

    what coordinate point is the solution to the system? {3x+2y=8 {x-y=1 (2,1) please don't think i just made that up, it's correct. you have to use substitution, when you do solve for x and y, you get: x= y+1 and y=x-1, plug in y for 3x+2y=8 and you get: y=1,

    asked by andrea on February 22, 2007
  65. chemistry

    Calculate the heat of formation of SiO4(s), given that the heats of formation of SiO2(s), -910.90 KJ/mol; H2O(l), -285.8 KJ/mol; HF (g), -271.1 KJ/mol. I know the heat of formation is products minus reactants but how do i do this when no reaction is given

    asked by matt on November 8, 2008
  66. chemistry

    consider the following reaction: C3H8 (g)+ 5O2 (g)--> 3CO2 (g)+ 4H20 (g) Delta H = -2440kJ The heat of formation of CO2 is -390 kJ/mol and the heat of formation of H2O is -240 kJ/mol. What is the heat of formation of propane?

    asked by madison on January 13, 2011
  67. waves (physics)

    Two sinussoidal waves identical except for phase travel in the same direction along a string and interfere to produce a resultant wave given by y(x,t)= (3.0mm) sin(20 rad/m)x - 4.0rad/s t + 0.820 rad) with x in meters and t in seconds. What is a) the

    asked by Susane on February 6, 2007
  68. Calculus

    Calculate the average rate of change of the given function f over the intervals [a, a+h] where h=1, 0.1, 0.01, 0.001, and 0.0001. I have no clue how to do this. Any help would be appreciated. Thanks I know I use the formula f=f (a+h) - f (a)/h Then do I

    asked by John on September 16, 2014
  69. Math(Please help)

    Logarithmic differentiation f(x)=(2x-1)^-2 (x+3)^4 at x=1 f'(x)= -2*2/2x+1 + 4*1/x+3 [(2x-1)^-2)(x+3)^4 and then I plug in 1. I am having trouble getting an answer when I plug in 1.

    asked by Hannah on April 30, 2011
  70. Biology

    2. The advantages of vascular tissue over nonvascular tissue are evident in a. whether organisms have alternation of generations b. an organism's size and complexity c. the number of individual offspring produced by each organism d. all of the above B? 3.

    asked by mysterychicken on March 1, 2010
  71. Biology

    2. The advantages of vascular tissue over nonvascular tissue are evident in a. whether organisms have alternation of generations b. an organism's size and complexity c. the number of individual offspring produced by each organism d. all of the above B? 3.

    asked by mysterychicken on March 1, 2010
  72. Physics

    You are working as a summer intern for the Illinois Department of Natural Resources (DNR) and are assigned to some initial work on water resources project. The department will be overseeing the construction of a dam to create a large fresh water lake that

    asked by jesse on April 29, 2010
  73. Physics

    You are working as a summer intern for the Illinois Department of Natural Resources (DNR) and are assigned to some initial work on water resources project. The department will be overseeing the construction of a dam to create a large fresh water lake that

    asked by jesse on April 27, 2010
  74. Health

    4. Below are 4 of the 6 components of health. Which one means that you strive to live in peace with yourself and others around you? a. environmental health b. mental health c. social health d. spiritual health C 5. Which life skill promotes you to get

    asked by mysterychicken on October 6, 2011
  75. Disorders

    I need to know if my diagnoses of the following symptoms are correct before I start my research: Past several weeks that he is having more bruises, or ecchymosis, all over his body. After coughing this morning, he noticed tiny red marks all around his

    asked by Online Bus on January 23, 2010
  76. HCA 240

    I need to know if my diagnoses of the following symptoms are correct for the I start my research: Past several weeks that he is having more bruises, or ecchymosis, all over his body. After coughing this morning, he noticed tiny red marks all around his

    asked by Online Bus on January 23, 2010
  77. science

    1. Which of the following is evidence that groundwater cause erosion and deposition ? a) the formation of meanders b) the formation of large boulders in the desert c) the formation of alluvial fans d) the formation of stalagmites and stalactites in caverns

    asked by victoria on March 10, 2014
  78. Chemistry

    The net ionic equation for ALL aqueous reaction of strong acids and strong soluble bases that form soluble salts is 1. the formation of H2O from H+ and OH−. 2. the formation of water from the ele-ments. 3. the formation of water and the corre-

    asked by Elva on October 16, 2010
  79. Chemistry

    Why do we put a minus sing in front of the bond enthalpies of the bonds that are being formed? And why are the enthalpies of formation negative in general? I also don't understand why we subtract the enthalpy of formation of the reactants from the enthalpy

    asked by Anna on April 3, 2010
  80. algebra

    You pull out the plug from the bathtub. After 40 seconds, there are 13 gallons of water left in the tub. One minute after you pull the plug, there are 10 gallons left. Assume that the number of gallons varies linearly with the time since the plug was

    asked by Preston on August 18, 2013
  81. physics

    "What is the phase difference of a progressive wave [y=0.5sin(2πx-60t] with a phase shift from (-2,0)to(1.5,0)"?

    asked by POPPY on April 8, 2019
  82. computor programming

    is the design phase of a give project only as good as the analysis of the previous phase

    asked by jeremy on November 18, 2009
  83. Chemistry

    Phase diagrams- Explain how the density of the solid and liquid phase would compare.

    asked by Lauren on January 16, 2008
  84. physics

    In the figure below, the fresh water behind a reservoir dam has depth D = 13 m. A horizontal pipe 6.0 cm in diameter passes through the dam at depth d = 6.0 m. A plug secures the pipe opening. (a) Find the magnitude of the frictional force between plug and

    asked by rock on January 28, 2011
  85. Science Asap

    As a substance is heated from its liquid phase to its gas phase, what happens to the spacing and speed of its molecules? Thank You for helping.

    asked by ST on October 27, 2012
  86. chemistry

    Are bond energies (single and multiple bonds) applicable only to gas phase?? For instance, I can use the bond energy data to calculate for enthalpy of reaction for the formation of water: 2 H2(g) + O2(g) -> H2O(g) But I can't directly use it to calculate

    asked by Namie on September 19, 2012
  87. chem

    Are bond energies (single and multiple bonds) applicable only to gas phase?? For instance, I can use the bond energy data to calculate for enthalpy of reaction for the formation of water: 2 H2(g) + O2(g) -> H2O(g) But I can't directly use it to calculate

    asked by Namie on September 19, 2012
  88. physics

    Advantageous of 3pin plug over 2 pin plug

    asked by question on October 19, 2015
  89. cosmetics science

    Could you tell me,what is the specific mobile phase of lycopene when stationary phase is silica? Thank you.

    asked by sine on November 28, 2010
  90. science please help

    Help please. According to the following diagram, approximately how much time goes by between phase H and phase B? explain your answer.

    asked by Ally on December 7, 2015
  91. Astronomy/Math

    I am going to make a moon phase program. Is there a formula for the phase angle?

    asked by Anonymous on January 9, 2009
  92. Chemistry

    How do i calculate plate number, distribution constant, mobile phase and stationary phase volume for tlc not HPLC/ GC

    asked by Pharmacy on July 27, 2011
  93. Chemistry Urgent

    Assuming that kerosene is C11H24, calculate the standard enthalpy change when 1 mole of kerosene burns completely in oxygen, using the data below: ΔH of formation of C11H24(l) = -327 kJ mol ΔH of formation of CO2(g)= -394 kJ mol ΔH of formation of H2O

    asked by Ava on March 9, 2014
  94. Biology

    The p53 enzyme system prevents progression to which stage of the cell cycle? choices are: 1. G1 2.Cytokineses 3.S phase 4. Mitosis 5. G2 * I think it's S phase, It's not G1 right?

    asked by sarah on March 28, 2017
  95. Anonymous

    study of sunspots. spots in a year min. is 10, max is 110. between max's of 1750 & 1948, 18 cycles occurred. Find a sinusoidal equation to model this. My equation looks something like this so far: y=50sin(2pi/11(x-d))+60 so How do I get the phase shift? d?

    asked by trig on May 7, 2009
  96. Algebra II

    State the phase shift of y=cos(theta-[pi/3]). Then graph the function. I know that you cannot graph on this site but how do I solve for the phase shift and to graph the phase shift, would I first have to graph the current equation? Thanks.

    asked by Lucy on April 19, 2008
  97. physics- is this correct?

    An oscillator has an amplitude of 3.2. At this instant the displacement of the oscillator is 1.4. What are the two possible phases of the oscillator at this instant? so i used the equation x=A cos (omega(t) + phase zero) which looks like 1.4=3.2 cos phase

    asked by Jessica on April 29, 2008
  98. ap chemisty

    Calculate the heat of formation of butane given that the heat of formation of H20(l) is -285.3 kj/mol and the heat of formation of CO2(g) is -393.5 kj/mol.

    asked by Sarah on September 24, 2010
  99. Physics

    One gram of water is placed in a cylinder and the pressure is maintained at 2.0 x 105 Pa. The temperature of the water is raised by 31oC. Determine the change in internal energy when, a) the water is in its liquid phase and causes an expansion of 1.0 x

    asked by Angel on October 7, 2010
  100. Physics

    One gram of water is placed in a cylinder and the pressure is maintained at 2.0 x 105 Pa. The temperature of the water is raised by 31oC. Determine the change in internal energy when, a) the water is in its liquid phase and causes an expansion of 1.0 x

    asked by Angel on October 7, 2010

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