1. Chemistry

    The half life for a first order reaction is know to be 4.5 h. How long will it take for 85% to be decomposed, in h?

    asked by Paige on December 7, 2011
  2. science

    What mammal order has the following dental formula 006/406

    asked by Kelsey on May 29, 2008
  3. chemistry

    What is the nitrogen-oxygen bond order in potassium nitrite

    asked by shannon on December 5, 2007
  4. 8th grade Math

    Put the following numbers in order from least to greatest. 0.0875, 7/8, 0.875%

    asked by Elizabeth on September 27, 2010
  5. Science

    What mammal order has the dental formula 205/105?

    asked by Sean on May 4, 2010
  6. maths

    If G is a group of order 12, the G must have a subgroup of all of the following orders EXCEPT Choose one answer. a. 0 b. 12 c. 2 d. 3 e. 6 f. 4

    asked by black_widow on March 23, 2013
  7. SOCIAL STUDIES

    IS AN EASY WAY TO LEARN THE PRESIDENTS OF THE UNITED STATES BY ORDER

    asked by AMERICAL on June 22, 2011
  8. math

    order the numbers from least to greatest 367;597;279

    asked by shion on August 27, 2012
  9. math

    if you know that 7* 8=56 , how can you use the commutative (Order) Property of Multiplication to find the product of 8*7 ?

    asked by cherry on August 19, 2014
  10. Chemistry - Bond Order

    What is the bond order of the diatomic molecule BN and is it paramagnetic or diamagnetic?

    asked by Coldier on May 2, 2010
  11. Math

    What steps do I take in order to solve : (101-100) = .512 x (x/.5)

    asked by MAX on December 10, 2010
  12. art

    what should the artist do first in order to draw this two point perspective image

    asked by kelly on October 20, 2014
  13. Maths

    Write the decimals in ascending order. 5.78, 5.08, 5.8, 5.287, 5.078

    asked by Joe on January 14, 2016
  14. surface area and volume

    how many soils needs to be dug out in order to dig a well of depth 7 m and radius 2m?

    asked by sirisha on March 18, 2016
  15. polarity

    could you put these in order of polarity please: fluorenone, fluorenol and fluorene. Thanks

    asked by Sophie on January 1, 2008
  16. chemistry

    increasing order of boiling points of NO2, KCl and N2

    asked by Anonymous on October 19, 2016
  17. Pre-Calc

    Eliminate the parameter x = abs(t-3) and y = t + 3...how do you undo the absolute value in order to get y=?

    asked by Megan on March 2, 2014
  18. math

    timothy is solving the problem 50+108/ x4.what order of operations should he use

    asked by roderica on September 23, 2012
  19. study unit main ideas

    witch one of the folowing clue words indicates choronological order?

    asked by carla on March 2, 2015
  20. fractions

    list the fractions 1/4,3/8,2/6 in order from least to greatest writen in 8ths.

    asked by ttuuffyy on February 28, 2013
  21. math

    Describe how to order 7,463, 74,633, 74,366 from least to greatest

    asked by mom on August 26, 2015
  22. history

    List the mexican war battles in order, by date.

    asked by suzy on March 26, 2013
  23. character education

    Which of the following is NOT a goal of an educated mind? order intellectual suppority 1

    asked by Bri on November 7, 2017
  24. Physics

    An elevator operates on a very slow hydraulic jack. Oil is pumped into a cylinder that contains the piston. The piston lifts the elevator as the internal cylinder pressure (P2) rises in comparison to the outside pressure (P1=101,325 Pa or about 14.7 psi).

    asked by Calvin on November 22, 2010
  25. Physics

    An elevator operates on a very slow hydraulic jack. Oil is pumped into a cylinder that contains the piston. The piston lifts the elevator as the internal cylinder pressure (P2) rises in comparison to the outside pressure (P1=101,325 Pa or about 14.7 psi).

    asked by Ansermi on November 22, 2010
  26. math

    Bert wants to make a larger version of a drawing he saw in a magazine. The drawing fits into a square with each side measuring 7 cm. If Bert makes his copy twice the size of the square measured in the original drawing, how much space will it cover on the

    asked by Karla on February 17, 2014
  27. Science

    I have a science exam tomorrow for 9 Space Science. I was wondering if you could help me find free practice exams, tests or questions to review for my exam. We have no way of knowing what your exam will cover. Your best bet is to review your own text,

    asked by Sarah on June 20, 2007
  28. physics

    It is falling. It has to fall, that is the law of gravity. Otherwise, it would leave Earth in a straight line. But if it falls at exactly the rate it needs to fall to travel in an orbit, we call that "orbiting". If if falls faster than that, it crashes

    asked by Anonymous on August 17, 2010
  29. physics(relativity)

    A boy runs a 100m distance in 20s as measured by an observer on earth.how long does it take according to an observer in space ship moving with speed of 0.98c for the boy to complete the run? What is the length of the track according to the moving observer

    asked by ebraheem on September 2, 2015
  30. Math

    Edward H. White, the first astronaut to spend 20 minutes free-floating in space, had to wear a special suit to protect him from heat, radiation, and particles. the number of layers in his suit is the number that is the only palindrome between 12 and 30.

    asked by Samantha on October 27, 2008
  31. physics

    A space probe of mass M is moving with uniform velocity v far from earth and from other massive bodies,and it is planned to deflect from its trajectory through an angle theta by firing from it a suitable mass at velocity v.Derive an expression for the

    asked by victor2 on August 2, 2011
  32. Physics

    An object in space is initially stationary relative to the Earth. Then, a force begins acting on the object, starting with a force of 0 N, and increasing at a uniform rate until the magnitude of the force is 56 N after the force has acted for 10 s. The

    asked by Kev on January 30, 2015
  33. physics - electrostatics

    A charged particle of mass m of 1 kg and charge q = 2 uC is thrown from a horizontal ground at an angle teta = 45 degree with speed 20 m/s. In space a horizontal electric field E = 2 x 10^7 V/m exist. Find the range on horizontal ground of the projectile

    asked by uma on April 14, 2012
  34. physics

    An object in space is initially stationary relative to the Earth. Then, a force begins acting on the object, starting with a force of 0 N, and increasing at a uniform rate until the magnitude of the force is 58 N after the force has acted for 25 s. The

    asked by jungtaesoo on January 11, 2016
  35. math

    Translate the following situation into an inequality. Do not solve. “Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are

    asked by Anonymous on March 16, 2011
  36. physics

    An astronaut whose mass is 80. kg carries an empty oxygen tank with a mass of 10. kg. The astronaut throws the tank away with a speed of 2.0 m/s. With what velocity does the astronaut start to move off into space?

    asked by Cory on December 7, 2009
  37. trig

    A space shuttle 200 miles above the earth is orbiting the. Earth once every 6 hours. how far does the shuttle travel in one hour? Note the radius of earth about 4000 miles.

    asked by Ali on September 17, 2011
  38. physics

    a space probe launched from earth and orbits at a distance of 15,000 m from earth's center, the gravitational force is 500 N. What is the size of force when it is 25,000 m from earth.

    asked by Bill on November 5, 2013
  39. Bio Chem

    The pKa of propanoic acid (propionic acid), CH3CH2COOH, is 4.87. Consider an equilibrium mixture of propanoic acid and its conjugate base with a pH of 4.87. Draw the structure of the form (acid or conjugate base) that predominates after a decrease in [H3O

    asked by Cristy on September 16, 2014
  40. Unit 1

    Math please in a certain school 55 students are taking French this number increases at the rate of 4 student per year the number of student taking Spanish is 95 and has been decreasing at the rate of 6 students per year write and solve an equation to find

    asked by Mercy brown on November 10, 2015
  41. physics

    While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each

    asked by Justin on July 25, 2013
  42. Statistics

    1. Consider an experiment that consists of rolling a pair of dice. There are 36 possible outcomes for this experiment which are equally likely. What is the probability of getting a total of 3 or 5 for this experiment? (a) 1 /3 (b) 20/36 (c) 1/36 (d) 1/6

    asked by meri on June 30, 2015
  43. Economics/English

    How do you structure a policy essay? Like I have an economic problem (welfare) and my thesis is a solution to is. I have to write a policy/essay on my solution/problem.

    asked by Labz on April 3, 2012
  44. accounting

    Normal price of mini-scooters are $120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013. Material costs are $20,0000 per year to produce these scooters. Variable costs are $10.00/per mile delivery and $50.00/scooter for handling

    asked by George on March 16, 2013
  45. accounting

    Normal price of mini-scooters are $120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013. Material costs are $20,0000 per year to produce these scooters. Variable costs are $10.00/per mile delivery and $50.00/scooter for handling

    asked by George on March 16, 2013
  46. History

    1.Which of the following decisions best shows the US governments willingness to participate in the global economy? A.relocating domestic jobs to foreign countries B.joining the World Trade Organization C.decreasing spending in international markets

    asked by Cindy on March 21, 2018
  47. Simple Array Process

    need help with this generate only the pseudocode. No charting is required, but you will have to incorporate the bubble sort algorithm to ensure the selling prices are in order so you can determine the median selling price. Do not assume that they will be

    asked by Mistory on September 28, 2011
  48. Biology

    I need help with a crossword and I cant figure out what the words are too these clues: Possible opening found in the cell membrane substance which makes up cell walls granular material in the nucleus that thickens to become chromosomes the endoplasmic

    asked by Jillian on September 15, 2009
  49. science

    For a machine with an efficiency of 80%, what is the work output of the machine if its work input is 2,000 joules? would i divide 2000/.80? which gives me 2500? Also, If a machine requires an effort force of 750 newtons applied over a distance of 2 meters,

    asked by please help(: on November 4, 2009
  50. informal logic

    Write two arguments in English, one in the form of modus poens and one in the form of modus tollens. Then write the arguements in symbols usimg sentence letters and truth-functional connectives. What advantages does being able to symbolize our arguments

    asked by rohwer42 on November 14, 2011
  51. Chemistry

    Got another practice question but I'm really stumped on this one: If the [ZnCl4]^2- ion is diamagnetic what must its structure be and why - octahedral, tetrahedral or square planar? I know that diamagnetic means that all its electrons are paired and that

    asked by Miaow on May 13, 2012
  52. algebra

    How do I get the write out the problem for : The sample space is orange, purple and white. If P(orange)=2/5 and P(purple)=3/10, what is P(white)? I have written 2/5.3/10=6/15 2/5

    asked by Nicole on September 3, 2014
  53. math

    John must mount a box which is 12 5/8 inches wide. He wants to leave 7 1/2 inches on each side of the box. How much space across will John need?

    asked by deepa on August 13, 2011
  54. science

    what is the difference between mass and volume? Mass is how much an object weighs. Volume is the amount of space the object takes up.

    asked by tiffany on December 14, 2006
  55. math

    About 7.5 gallons of water fill up 1 cubic foot of space. How many gallons of water will fill a goldfish pool.

    asked by Hayden Tate on March 7, 2016
  56. Physics

    A projected space station consists of a circular tube that is set rotating about its center (like a tubular bicycle tire) as shown in figure below. The circle formed by the tube has a diameter of about D = 1.28km. What must be the rotation speed (in

    asked by Anonymous on March 1, 2013
  57. English

    I really have problems in correcting the grammar and choosing the proper synonyms in these sentences. I selected the six most difficult ones. 1) Their task was to grow and harvest sugar cane. In those profit-making enterprises a system of terrible

    asked by Mike on March 7, 2011
  58. English

    Writeacher, I really need your help to check some mistakes in the word choice: 1) He lives alone because his wedding is broken. 2) It is impossible to switch off the telescreen fully (better completely) 3)The Thoughtpolice observe people 24 hours a day. 4)

    asked by Henry on March 9, 2012
  59. qnt/561

    Help bad golf balls shall not be greater than 1.620 ounces (45.93) the diameter of the ball shall be less than 1.680 inches the velocity f the ball shall not be greater than 250 feet per second. they check these often using random sampling, the dozen of

    asked by Anoymous on August 22, 2015
  60. Chemistry

    What aldehydes and primary alcohols might be oxidized to yield the following carboxylic acids: 1)p-methylhexanoic acid 2)pentanoic acid #1 should have been p-methylcyclohexanoic acid (p is para). My homework has the structure drawn out and I named it

    asked by Jamie on March 20, 2010
  61. Chem

    The melting point of KCl is 776 C whereas the melting point of NaCl is 801 C. 1. Identify the type of bonding in each substance. A: Both NaCl and KCl are ionic. 2. Account for the differences in the boiling points of the substances using principles of

    asked by Needs assistance on December 13, 2007
  62. Microeconomics

    As a general rule, profit-maximiaing producers in a competitive maket produce ouput at a point where: A) marginal cost is increasing B) marginal cost is decreasing C) marginal revenue is increasing D) price is less than marginal revenue I was picking C for

    asked by G on August 29, 2008
  63. science(sound #3)

    Space has no air, what is another name for no air?

    asked by Alyssa on February 18, 2015
  64. Physics

    In 1998, NASA launched DS-1 (Deep Space 1). This spacecraft successfully flew by the asteroid 1992 KD. The propulsion system worked by ejecting argon ions at high speed. The propulsion system could increase the velocity by 7.2284x10^0 m/s per day. What was

    asked by shannon on October 13, 2010
  65. Teaching in Early Childhood Programs,

    Trey is a four-year-old with Down syndrome in your class. To support him in cleaning up his space after snack, which of the following should you avoid doing? A. Repeat expectations, such as "Your napkin goes in the trash." B. Conceal your feelings about

    asked by daniela on August 10, 2014
  66. math

    I'm trying to help my child with this problem.. 1.A bird is flying around the world at a rate of 12.2ft/sec. How many days will it take to complete its journey? (circumference of earth=25,000 miles. 2. A deep space probe is traveling at a velocity of

    asked by Amina on June 21, 2010
  67. Math

    A triangular shelter has a base width of 2 m, a height of 2 m, a length of 3 m and hypotenuse 2.8 m. a) Every edge of shelter is to be sealed with tape.What length of tape is required. b) The shelter tag says that is occupied 10,000L of space. Show showing

    asked by dian on March 12, 2018
  68. science

    A boy runs a 100meter distance race in 20seconds as measured by an observer on earth.how long does it take according to an observer in space ship moving with speed of 0.98c for the boy to complete the run? What is the length of the track according to the

    asked by euro on September 2, 2015
  69. Economic Geography

    The geography of consumption if different from geography of production. Why? What does it mean to say that our geographies of consumption are becoming increasingly disjunct from the geographies of other aspects of our everyday lives (work, school, etc)?

    asked by Steve on December 1, 2007
  70. physics

    If the average speed of an orbiting space shuttle is 19600 mi/h, determine the time required for it to circle the Earth. Make sure you consider the fact that the shuttle is orbiting about 200 mi above the Earth's surface, and assume that the Earth's radius

    asked by savy on September 7, 2011
  71. Physics

    A 54100 kg space ship has completed two thirds of its journey from the earth to the Moon. At this position, what magnitude force would the ship's engines have to supply to be the equilibrant? Assume the mass of the moon is 7.35E + 22 kg and the distance

    asked by Sally on October 10, 2016
  72. homework

    ranslate the following situation into an inequality. Do not solve. “Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are

    asked by chuck on August 30, 2011
  73. Math

    A property company purchases a new office space for lease to a small business for $2,400,000 including a land value of$400,000. the property is placed in service on March 15,1999.using MACRS,what is the depreciation on this property at the end of its first

    asked by Kara on July 9, 2009
  74. physics

    A solid lead sphere of radius 10 m (about 66 ft across!) has a mass of about 57 million kg. If two of these spheres are floating in deep space with their centers 20 m apart, the gravitational attraction between the spheres is only 540 N (about 120 lb). How

    asked by anonymous on March 11, 2014
  75. English

    I left out three sentences. Thank you very much. 1) There are several reasons why the murder takes place off-stage. First of all representing a regicide on stage was regarded as an offence towards the figure of the king. 2) Second, the open structure of

    asked by Henry2 on October 1, 2011
  76. Bio

    Which of the following is true? A. In the human female, ovulation occurs in nine-month cycles. B. Egg cells develop in a structure called the uterus and are released at the rate of one a month. C. Spermatogenesis is the process of fertilization of the egg

    asked by Anonymous on April 17, 2017
  77. eng 12

    I got to analyze suzukis history at our peril. How should i present my analysis? suppose to tell why its expository? then provide examples. Should i state why in the first paragraph why its expoisitory? ie he talks about how humans need to protect the

    asked by ben on October 22, 2008
  78. S.S

    in what way did the structure of the Virginia house of the Burgesses influence the governments of the states and eventually the national government created by the U.S. Constitution? A. It established an elected representative legislature B. It set up a

    asked by Help on September 27, 2017
  79. Chemistry

    #1) The Lewis structure of PF3 shows that central phosphorus atom has ___ nonbonding and ___ bonding electron pairs. #2) How many equivalent resonance forms can be drawn for CO3^-2? (carbon is the central atom) #3) The bond angle in NF3 is slightly less

    asked by Diana on May 21, 2009
  80. history......Mrs. Sue

    How did glasnost contribute to the break-up of the soviet Union? A. restructuring the economy led to a change in the political structure*** B. by allowing citizens more freedom to travel people could see what they were missing C. due to cuts in military

    asked by cole on May 8, 2018
  81. Chemistry

    You write the electron structure like this. 1s2 2s2 2p6 3s2 3p6 3d10 4s1 is the neutral Cu atom. Remove the two outside electrons to make the Cu^+2 ion. That leaves us with 3d9 as the outside and since that is an odd number, one electron must be unpaired.

    asked by Anonymous on October 19, 2010
  82. poetry

    "A Dream Deferred" What happens to a dream deferred? Does it dry up like a raisin in the sun? Or fester like a sore- and then run? Does it stink like rotten meat? Or crust and sugar over- like a syrupy sweet? Maybe it just sags like a heavy load. Or does

    asked by Lilly on October 13, 2013
  83. Physics

    An asteroid heads for Earth at 12 km/s. In addition, a NASA space team is able to attach a rocket booster to the asteroid, which then allows the asteroid to move at 28 degrees to its original path to a speed of 20km/s. What is its average accleration for

    asked by Harold on January 21, 2009
  84. Physics

    An asteroid heads for Earth at 12 km/s. In addition, a NASA space team is able to attach a rocket booster to the asteroid, which then allows the asteroid to move at 28 degrees to its original path to a speed of 20km/s. What is its average accleration for

    asked by Harold on January 21, 2009
  85. physics

    A hydraulic press has an input cylinder 1 m in diameter and an output cylinder 2 meters in diameter. Assuming 100% efficiency, find the force exerted by the output piston when a force of 10 Newtons is applied to the input piston. pounds If the input piston

    asked by Anonymous on April 1, 2012
  86. criminal Justice

    Write a 700 to 1000 word paper in which you explain comonents of the criminal justice system and the criminal justice process. In your paper, be sure to include the definition of crime, it's relationship to the law, and the government structure as it

    asked by Maria Suter on October 31, 2010
  87. Criminal Justice

    Write a 700 to 1000 word paper in which you explain comonents of the criminal justice system and the criminal justice process. In your paper, be sure to include the definition of crime, it's relationship to the law, and the government structure as it

    asked by Maria Suter on October 30, 2010
  88. chemistry

    Carbon reacts with chlorine and hydrogen to form the compound CH3Cl. (a) Construct the structure of CH3Cl. What is the dominant form of secondary bonding for CH3Cl? Dipole-dipole interactions, London dispersion forces, Covalent bonding, Ionic bonding

    asked by adex on March 18, 2013
  89. Microecon

    The following diagram shows the cost structure of a monopoly firm as well as market demand. Identify on the graph and calculate the following: a. Profit-maximizing output level b. Profit-maximizing price c. Total revenue d. Total cost e. Total profit or

    asked by MICHELLE on February 20, 2010
  90. English

    Baker uses the sentence “Women’s purses, despite their great weight, frequently travel through six or seven rooms to find hiding space under a couch” in his essay to create _[blank]_. a neutral mood heated suspense an unhappy tone a humorous tone

    asked by Caitlyn on December 10, 2018
  91. math-computer

    Please help me do this question!!!!! (C): 116.98GB Assuming a disk should never get more than 85% full, and assuming you were generating 200MB of new data per week, at what point would you need to add another hard disk to this PC? How long until you have

    asked by jenni on July 22, 2010
  92. Physics

    1.A spherical condenser has inner and outer spheres of radii a and b respectively. The space between the two is filled air. The difference between the capacities of the two condensers formed when outer sphere is earthed and when inner sphere is earthed

    asked by Sandhya on February 1, 2010
  93. physics

    You are explaining to a friend why the crew of the International Space Station feels weightless while orbiting the Earth. Your friend responds that he thought gravity was just a lot weaker up there. Show that it isn’t so by calculating the acceleration

    asked by paige on October 23, 2012
  94. Fluid Mechanics

    A closed tank, rectangular in plan with vertical sides, is 1.8m deep and contains water to a depth of 1.2m. The enclosed space above the water is pressurized with air up to 35kPa. If the length of one wall of the tank is 3m, determine the resultant force

    asked by Claire on October 31, 2010
  95. Physics

    Blocks of mass 4, 8, and 24 kg are lined up from left to right in that order on a frictionless surface so each block is touching the next one. A rightward-pointing force of magnitude 15 N is applied to the left-most block. a.)What is the magnitude of the

    asked by Cesar on February 20, 2011
  96. Physics

    A. You drag a suitcase of mass 19 kg with a force of F at an angle 41.3 degrees with respect to the horizontal along a surface with kinetic coefficient of friction 0.54. The acceleration due to gravity is 9.8 m/s^2. What is the normal force on the

    asked by Chris on November 6, 2014
  97. Chemistry

    X(g) + 2 Y(g) + 2 Z(g) -->3 M(g) + 2 N(g) I've already found the orders for the following to be: X is 2nd, Y is 1st, Z is 0 and overall of course is 3. But I am confused about the below question. I initially guess that No it doens't occur in one step..but

    asked by Val on April 1, 2010
  98. Magnetism

    A circular wire loop of mass M and radius R carries a current I. It hangs from a hinge that allows it to swing in the direction perpendicular to the plane of the loop. A uniform magnetic field B exists everywhere in space pointing upwards. What angle θ

    asked by Colin on December 18, 2013
  99. PHYSICS

    A circular wire loop of mass and radius carries a current . It hangs from a hinge that allows it to swing in the direction perpendicular to the plane of the loop. A uniform magnetic field exists everywhere in space pointing upwards. What angle does the

    asked by RAMA on December 16, 2013
  100. Physics

    You are explaining why astronauts feel weightless while orbiting in the space shuttle. Your friends respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating the acceleration of gravity 248

    asked by Dan on July 8, 2012