1. chem

    Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. dependent on the mass of solute present. C.
  2. chemistry

    Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. C.
  3. CHEM HELP

    Which of the following is NOT true of colligative properties? Colligative properties are... a) dependent on the molar mass of the solute. b) dependent on the mass of solute present. c) responsible for lowering the vapor pressure of a solution versus the
  4. Chemistry Pretest

    Consider the following balanced equation. 2 H2 + O2 ---> 2 H2O Which of the following statements is false? a) One molecule of O2 will react with 2 molecules of H2 b) One mole of O2 will react with 2 moles of H2 c) The complete reaction of 32.0 g of O2
  5. Chemistry/Science

    Can you check my answers thanks. Directions: State which statements are true and false. 1. Carbon atoms can bond together in straight chains, branched chains, or rings. Answer: True 2. Isomers are compounds with the same simple formula but different three
  6. Stats

    An instructor gives a test with 20 multiple choice questions. There are 4 responses per questions and only one choice correct. The test also has 30 True/False questions. Determine the probability a student randomly guessing on all questions and correctly
  7. Language Arts

    Anybody out there from 7th grade connections academy??! need help checking my answers!!: 1. The author's tone in this editorial is (1 point) sad humorous compassionate angry 2. What is the key phrase used to signal a comparison or contrast in the following
  8. altitude

    I'm going to refer back to my last question today. Doesn't it feel different when you live in high-altitude cities like Denver or Calgary, Canada compared to low-lying areas like Louisiana (which is below sea level. The thin air could feel odd when you go
  9. Government Us

    Compared to Supreme Court nominations, those for the lower federal courts a. are, although much greater in number, irrelevant to a president's policy agenda. b. are not subject to partisan consideration. c. have a much greater probability of being rejected
  10. chemistry

    Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. independent of the chemical identity of the solute.
  11. Statistics

    A true-false test consists of 20 questions, each of which has one correct answer: true, or false. One point is awarded for every correct answer, but one point is taken off for each wrong answer. Suppose a student answers every question by guessing at
  12. Geometry

    I need help with this. Use the Law Of Syllogism to determine a conclusion from statements 1 & 2. 1. All squares are rhombuses 2. The diagonals of a rhombus are perpendicular. What can we say about the diagonals of all squares then? the diagonals of all
  13. English

    Writeacher, here is the other question I'd like them to answer. 1) Go over George Orwell's life focusing your attention on those episodes which strengthened his indifference to accepted values and strong-mindedness. (I don’t want students to repeat
  14. physics

    a projectile is ejected from a 25 m high tower with a velocity of 40 m/s at an angle of 30 degrees to the horizontal first on Earth and then on Mars. What is the ratio of the time taken to hit the ground on Mars compared to Earth? (Assume gravity on mars =
  15. chem lab (webwork)

    Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. independent of the chemical identity of the solute. C. responsible for lowering the vapor pressure of a solution
  16. physics

    A pair of blocks, one 3 times as massive as the other, are connected by a compressed spring. When the spring is released, the blocks fly apart. Compared to the heavier block, how many times faster does the lighter block accelerate?
  17. Math

    Tom can complete 5 laps of a race track in 15 minutes. Mark can finish 10 laps in 20 minutes at a speed of 150 miles/hour. How fast is Mark driving compared to Tom?
  18. Physics

    A sound of constant frequency is produced by the si-ren on top of a firehouse. Compared to the frequen-cy produced by the siren, what is the frequency heard by a firefighter approaching the firehouse? What if the firefighter is driving away?
  19. mah

    the edges of a cubical frame are made from plastic straws. how much longer is the total length of the plastic edges of a cube whose edge is 10cm compared to a cube whose edge is 18cm?
  20. chemistry

    is the following sentence true or false? Mendeleev used his periodic table to predict the properties of undiscoverd elements.. True: Mendeleev used his periodic table to predict the properties of a undiscoverd element.
  21. Science/Chemistry

    Is this true Dispersion forces generally increase in strength as the number of electrons in a molecule increases. The number of electrons can only increase if more atoms are added to the molecule. The molecule has to stay electrically neutral. Dispersion
  22. physical

    for a gaussin surface through which the net flux is zero the following 4 statements could be true which of the statements must be true a)tere are no charges inside the surface b)the net charge inside the surface is 0 c)the electric field is 0 everywhere on
  23. Chemistry

    Which statement about resonance structures is TRUE: 1) There can never be more than two resonance structures for any molecule. 2) Only ionic compounds use resonance structures 3) The real structure of a molecule is an average or hybrid of the resonance
  24. English-essay !!!!!!!!!

    I am a spanish speaking person, so this is my best shot. Please understand me. Thanks. Being aware of this fact, I proceed to find out what are my nonverbal listening patterns. To do so, I prepared a 500 word speech to be presented in less than half an
  25. Algebra

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

    A polygraph machine correctly identifies a lie 81% of the time, and incorrectly identifies a true statement as a lie 8% of the time. If a person being examined with the machine lies 10% of the time, what is the probability that a statement identified by
  27. Maths

    true/false 1. a cubic polynomial has at least one zero.............. 2. a quadratic polynomial an have at most two zeroes.......... 3. if r(x)is the remainder and p(x) is the divisor, then degree r(x) < degree p(x)............ 4. if zeroes of a
  28. science/chemistry

    I have to write a persuasive paragraph on the following question: What should be the job of a scientist?Pick one to argue: a) Create more synthetic substances. Fore example: synthetic elements, genetically modified food b) Study substances that naturally
  29. Physics

    Having landed on a newly discovered planet, an astronaut sets up a simple pedulum of length 1.29 m and finds that it makes 567 oscillations in 1020 s. The amplitude of the oscillations is very small compared to the pendulum's length. What is the
  30. Physics

    Having landed on a newly discovered planet, an astronaut sets up a simple pedulum of length 1.29 m and finds that it makes 567 oscillations in 1020 s. The amplitude of the oscillations is very small compared to the pendulum's length. What is the
  31. physics

    A 15.0 kg stone and a 150 kg stone are released from rest at the same height above the ground. There is no appreciable air drag. Which of the following statements is or are true? (More than one statement may be true.) A. Both stones have the same initial
  32. Math

    myriam compared the y-intercept of the graph of the function f (x) = 3x + 5 to the y-intercept of the graph of hte linear function that includes the points in the table below. What is the difference when the y-intercept of f (x) is subtracted from the
  33. physics

    The small piston has a diameter of 2cm and the large piston has a diameter of 6cm. How much more force can the larger piston exert compared with the force applied to the smaller piston?
  34. Statistics

    True or False Question. I need help please. A sientific paper reports the results of a drug test. This medicine used to reduce vision loss in people suffering from macular degeneration. The article state p = 0,04 section findings. The following issues are
  35. physics

    A block of mass M is sliding down an inclined plane and is accelerating. Which of the following statements are true? Choices: True, False. A. The frictional force must be less than the component of Mg down the plane B. The normal force of the plane is
  36. Science

    What can scientists learn from the rate at which radioactive elements decay? A. a rock's absolute age* B. the relative age of rock layers C. where one soil horizon ends and the next begins D. the difference between molds and casts. After six half-lives,
  37. Science

    What can scientists learn from the rate at which radioactive elements decay? A. a rock's absolute age* B. the relative age of rock layers C. where one soil horizon ends and the next begins D. the difference between molds and casts. After six half-lives,
  38. Science

    What can scientists learn from the rate at which radioactive elements decay? A. a rock's absolute age* B. the relative age of rock layers C. where one soil horizon ends and the next begins D. the difference between molds and casts. After six half-lives,
  39. physics

    A 5.00kg stone and a 50.0kg stone are released from rest at the same height above the ground. There is no appreciable air drag. Which of the following statements is or are true? (More than one statement may be true.) A. Both stones have the same initial
  40. Statistics

    PLEASE CHECK AND SEE IF I HAVE THESE ANSWERS CORRECT. T F 1. Hypothesis testing is a procedure based on sample evidence and probability theory to decide whether the hypothesis is a reasonable statement. ANSWER (True) T F 2. For a one-tailed test using the
  41. Stat

    PLEASE CHECK AND SEE IF I HAVE THESE ANSWERS CORRECT. T F 1. Hypothesis testing is a procedure based on sample evidence and probability theory to decide whether the hypothesis is a reasonable statement. ANSWER (True) T F 2. For a one-tailed test using the
  42. Literature

    I have to write a persuasive essay on a certain topic. My topic is: School Uniforms--Good or Bad? For this activity, I have to support my opinion that having school uniforms is better by convinving evidence. Some examples I can use are statistics,
  43. science

    Which statement is true regarding nuclear energy? (Points : 1) Nuclear power produces no greenhouse gasses and thus poses no environmental threats. Nuclear plants rely on a massive industrial infrastructure using fossil fuels. Due to strict safety
  44. chemistry

    In experiment concerning potentiometric determination of puriy and Ka of KHP, we obtained an experimental pKa of 5.04 and when compared with the theoretical pKa of 5.51, we obtained a % relative error of 192%. Could this error mean that a cerain impurity
  45. Intro to Psychlogy

    One of the best ways to compute heritability is to compare: adopted children compared to adopted siblings. blood relatives who live in the same area. fraternal twins reared in different environments. identical twins reared in different environments. please
  46. Health

    1. According to the National Clearing House for Alcohol and Drug Information (NCADI), most children under the age of _____ , who do not participate in drug and alcohol abuse, is virtually certain to never do so. (1 point) 20 21 23 19 2. The average age
  47. d

    I have read your article that Liane Beam Wansbrough produced, on the topic of cosmetic plastic surgery, and I am writing to express my beliefs and feelings on the topic that you have issued out. I can understand your point of view, why you chose to help
  48. social studies

    Which of the following is Not a reason why Americans won the war, despite having many disadvantages compared to Britain? A. the Americans had the advantage of fighting in their own land. B. aid from France and Spain was important to american success. C.
  49. econ (economyst)

    The real exchange rate between Canada and U.S. must be unity if LOOP is found held for all the common goods that are consumed in both countries. True or False? Economyst, last time you said it is false, but if LOOP holds for each good in the basket, it
  50. Physics

    You are travelling in your car at 50km/hr, your friend is traveling at 25 km/hr, both have the same mass. What distance do you need to travel to stop compared to the distance that your friend needs to stop? How will the stopping distance change if you and
  51. another civics

    Assume the Chilean peso is decreasing in exchange value compared to the U.S. dollar. Who will benefit most in this situation? a. A Chilean company that imports oil from Venezuela b. A Chilean family visiting relatives in the United States c. A Chilean
  52. physics

    does anyone know who conducted the experiment or a credible description of the experiment that helped prove Einstein's thought experiment: the twin paradox? as in the experiment in which one cesium-beam atomic clock stays on Earth, while another one takes
  53. Psychology

    I know a man who read to his 5 children every night before they went to bed, and they all could read before entering preschool. Suppose that this were true of all children we could find who were read to every night before going to bed but true of only a
  54. math

    1. Which figure has rotational symmetry? (1 point) diamond sideways t polygon... polygon 2. Indicate whether the following statement is true or false. If a figure can be translated, then it will tessellate. (1 point) True, all translations are
  55. Math: statistics

    A DVD rental store wants to know what proportion of its customers are under age 21. A simple random sample of 500 customers was taken, and 375 of them were under age 21. Presume that the true population proportion of customers under age 21 is 0.68. Find
  56. Physics

    A small bug is nestled between a 1-kg block and a 2-kg block on a frictionless table. A horizontal force can be applied to either of the blocks as shown in figure Q5.24 (i) In which situation illustrated in the figure (a) or (b), does the bug have a better
  57. Reading comprehension

    Reading - Annie, Tuesday, May 8, 2012 at 9:56pm The fish sizes r on a graph Blue fish. 70 feet Red fish. 45 feet Question true or false The red fish is not as long as the blue fish. True or false
  58. Reading comprehension

    Reading - Annie, Tuesday, May 8, 2012 at 9:56pm The fish sizes r on a graph Blue fish. 70 feet Red fish. 45 feet Question true or false The blue fish is not as long as the red fish. True or false
  59. Reading comprehension

    Reading - Annie, Tuesday, May 8, 2012 at 9:56pm The fish sizes r on a graph Blue fish. 70 feet Red fish. 45 feet Question true or false The blue fish is not as long as the red fish. True or false
  60. meteorology

    Compared to the planet's average radius (6371 km or 3959 mi), the atmosphere is like the thin skin of an apple. About 99% of the atmosphere's mass occurs within about 32 km (20 mi) of Earth's surface. Hence, the thickness of the atmosphere represents only
  61. Managerial Economics

    If the price of computers falls 6 percent during a period when the level of average prices falls 12 percent, the relative price of computers compared with other goods: a) Stays the same. b) Increases. c) Decreases. d) More information is required to answer
  62. Science - physics

    Imagine you need to deliver a piano over three steps. A longer ramp translates into less force necessary to raise the piano's height than a shorter ramp would require. Calculate the percentage smaller a force would be required using an 2.8m long ramp
  63. biology

    True or False: The multi-cellular stage in the life cycle of a fungus is haploid. http://staff.jccc.net/PDECELL/celldivision/lifecycles.html#fungi Yes, true. And to make it more interesting, there is a species of fungi that live in symbosis with orchid
  64. statistics

    Here are 6 measurements of the electrical conductivity of a iron rod: 10.08, 9.89,10.05,10.16,10.21,1011 The iron rod is supposed to have conductivity 10.1. Do the measurements give good evidence that the true conductivity is not 10.1? The 6 measurements
  65. physics

    The density of liquid carbon dioxide is about 0.8 g/cm^3. What volume fraction inside the fire extinguisher (when full) is occupied by CO2? The density of CO2 gas is negligible compared to the density of liquid CO2. My answer was 75%. Please verify.
  66. chemistry

    Higher signal to noise signal ratios can be achieved in FTIR spectra compared to spectra from dispersive ir instrument. how is such a useful feat achieved in ftir
  67. Biology

    What differences would you expect to see in a population made up of individuals whose chromosomes experience crossing-over frequently compared with a population made up of individuals whose chromosomes do not cross over?
  68. journalism check answers

    What is satire's underlying goal? to sell newspapers to shock people to get people to think c Many young people today get their news from which of the following unlikely sources? comedy shows such as "The Daily Show" their friends video games B Which of
  69. calculus

    TRUE OR FALSE 1. if the lim as n->infinity of a(sub n)=0, then the sum from n=1 to infinity of a(sub n) converges i said this was true because I know that if a (sub n) does NOT=0, it diverges 2. if the sum from n=1 to infinity of a(sub n) converges and
  70. epi

    Workers in less developed countries have comparable death rates to the U.S. in the same industries. (Points: 3) True False 2. OSHA and NIOSH were established as provisions of the 1976 Toxic Substances Control Act. (Points: 3) True False 3. Which of these
  71. Mathematical induction. I'm stuck. So far I have..

    For all integers n ≥ 1, prove the following statement using mathematical induction. 1+2^1 +2^2 +...+2^n = 2^(n+1) −1 Here's what I have so far 1. Prove the base step let n=1 2^1=2^(1+1)-1 False. Someone else suggested that the base step is :
  72. Science

    Which of the following is true regarding the organization of laminar structure in cortex? a)The output layers project only to cortical targets b)Only the input layers contain neurons c)The output layers project only to subcortical targets d) The thickness
  73. Government

    1. Not all resolutions need presidential approval, as do bills becoming laws. True False I think the answer is true because there are certain resolutions like joint and concurrent resolutions and joint require presidential approval while concurrent does
  74. History

    Are these true or false: 1. Thoreau argued that the legitimacy of democratic laws demanded obedience and represented a higher law than one's indiviudual philosophies or ethics False? 2. The wave of national uncertainy and secularism in the early 19th
  75. Geometry Which Statement is True?

    Which statement is true? All quadrilaterals are rectangles All quadrilaterals are squares All rectangles are quadrilaterals All quadrilaterals are parallelograms Thank You :)
  76. English

    Write one paragraph of eight to twelve sentences persuading a friend to enroll in Penn Foster by describing at least three advantages of distance-education with Penn Foster compared to a traditional school education. Use the comparison-contrast order for
  77. English (advertisements)

    "This city of 200,000 has over 400 restaurants" Is that an unfinished claim? Unfinished claim-When you make a comparison, you state two things that are compared (for ex I am taller than you) Advertisers may intentionally not finish the comparison "this
  78. history

    For this paragraph: The kings of Spain, Santiago bishops and nobility paid high taxes and they made large donations of palaces, monasteries and lands a powerful Cluniac order enjoying a true religious and economic monopoly in Spain We have to explain what
  79. science

    Object A and B both start at rest. They both accelerate at the same rate. However , object A accelerates for twice the time as object B. What is the distance traveled by object A compared to that of object B? a) the same distance B) twice as far c) three
  80. spanish 3

    I need some help with these true or false questions: 1. ¿Esta oración utiliza los pronombres correctamente?: Jaime da un regalo a su hermano. Jaime dáselo. TRUE** 2. ¿Esta oración untiliza los pronombres correctamente?: Yo compro un disco para ti. Yo
  81. Math

    1. Should the census figures be adjusted for the undercount? If so, how? If this solution introduces errors of its own, estimate how large they are, compared to the undercounts. 2. What method should Congress select for apportioning the House of
  82. English

    I got a speech to do on a English topic called CONFLICT & RESOLUTION. I have to do a speech on either a : person - biography or autobiography novel movie theme a poet and conflicts can be: interpersonal intrapersonal intergenerational intercultural A large
  83. Physics

    A rock of mass m and a rock of mass 2m are both released from rest at the same height and fee no air resistance as they fall. Which statements about these rocks are true? (there may be more than one!) EXPLAIN HOW YOU KNOW THEY ARE TRUE AND EXPLAIN WHY THE
  84. Estimating Using Confidence Intervals

    An investor wants to determine the true average yield on a selection of investments from the Business week 1000. Suppose the investor draws a random sample of (n=40 firms) and finds an average yield on investment of (xbar = 5.00%) and a sample standard
  85. ENG 101

    I am wandering if my answers and rationale are correct. The capital X denotes my chosen answer and my rationale follows the statement choices. Comprehensive Grammar CheckPoint Read the following sentences, and focus on the grammar area specified in the
  86. economics

    Suppose a monopolist faces an inverse demand function P=100-1/2Q, and the monopolist has a fixed marginal cost of $20. How much more would the monopolist make from perfect price discrimination compared to simply producing where marginal revenue equals
  87. social studies

    Please check: 1. North Korea became a communist country by following the example set by Cuba (FALSE) 2. Congress set up a NASA in response to the Soviet blockade of Berlin (FALSE) 3. President Johnson tried to stop China from becoming a communist country.
  88. nutrition and wellness

    HACCP are guidelines and regulations for food safety standards. True False As a matter of fact, the government has implemented a system for commercial food preparation, and the word “critical” is part of that system: it is called “Hazard Analysis
  89. Geometry

    1. If RST=NPQ, which of the following is true? A) R=P B) R=Q C) T=P D) T=Q <---- My answer 2. Given ABC=PQR, m<B=3v+4, and m<Q=8v-6, find m<B and m<Q. A) 22 B) 11 C) 10 <---- My answer D) 25 3. Which of the following statements is true
  90. Math

    Each day Julia's math Teacher gives class a warm up qs. It's true/false 20% of the times and multiple choice 80% . Julia gets 70% on true false correct and 90% on multiple choice correct. Julia answered today's question correctly. What's the probability
  91. Chemistry Help!!!!!!!!!!!!!!

    1)The equipment you would use for carrying out a simple distillation at reduced pressure (i.e. under vacuum) 2)What could be the advantage of carrying out a distillation under vacuum as compared to atmospheric pressure?
  92. character education

    ____________ is necessary to develop positive social relationships. Charm Respect Talent B? Question 18 (true/false) An individual's identity is rarely influenced by his or her peers and friends. True False False? Question 19 (multiple choice) Which of the
  93. Science Physics

    Ms. Sue could you please explain this to me. Imagine you need to deliver a piano over three steps. A longer ramp translates into less force necessary to raise the piano's height than a shorter ramp would require. Calculate the percentage smaller a force
  94. maths

    The production of natural rubber in Malaysia in July 2004 was 108315 tonnes,a rise of 4.9% compared to the previous month.Calculate the production of natural rubber in June 2004 in kg.Give your answer in standard form,correct to 4 significant figures.
  95. Anthropology

    what is difference between chinese marriage customs and Indian marriage customs, thanks. Here are a couple of very informative sites: http://weddings.iloveindia.com/features/marriage-rituals-customs.html http://www.chinabridal.com/etiquette.htm Thank you
  96. Math

    True or False: The ratio of boys to girls in Miss Bennet's class is 2:1. This ratio means there are two boys and one girl in Miss Bennet's class.- Is it true or False, and WHY?
  97. Persuasive Writing help

    I'm writing a persuasive request but English is not my native language. I've done many drafting and revising, but still not sure. so I would be grateful if you could show me what I did wrong and the correct way to revise it. Thanks "Dear xxx, I would like
  98. business

    1. Which way of asking for action carries the highest level of politeness? (Points: 5) A polite order An indirect request A question (*) An order 2. Which of the following statements most effectively applies the you-attitude? (Points: 5) "We began
  99. Calculus

    True or false: If f(x) is continuous on the interval [a,b] & if the definite integral of f(x) over this interval has value zero, then the equation f(x)=0 has at least one solution in the interval [a,b]. True or false: If f(x) is continuous everywhere and
  100. math

    hello, I am to calculate a model length of a boat and a car. The boat's true length is 17 feet and the car's true length is 20 feet. The model will be on a 1:16 scale. Could you tell me how I get started with this please?