Most popular questions and responses by ty
  1. Chemistry

    Consider the following reaction: CaCO3(s)→CaO(s)+CO2(g). Estimate ΔG∘ for this reaction at each of the following temperatures. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.) for 310K,1070,1470 this is what i

    asked on May 19, 2014
  2. Algebra

    A taxi cab charges $0.55 per mile in addition to a $1.75 flat rate fee. Susie has $10 to spend on a taxi cab ride. The taxi driver will not give anyone a ride unless they are going somewhere that is more than 2 miles away. Model Susie’s situation with a

    asked on December 16, 2016
  3. Algebra

    the sum of 4 times one number and 3 times a second number is 64. If the sum of the two numbers in 19, find the two new numbers

    asked on November 17, 2016
  4. Math

    Each digit in the division example has been replaced with the same letter throughout. (r stands for remainder.) The digits used wher 1,2,3,4,5,7,and 9. Find the numbers SU rE ------ )CAN -CU ------- IN - IU ------- E

    asked on October 29, 2014
  5. algebra

    A jogger ran 6 miles, decreased her speed by 1 mile per hour and than ran another 7 miles. If total jogging time was 2 1/42, find speed for each part of her run.

    asked on December 15, 2011
  6. english

    Click on the box to choose whether each sentence restates the key idea expressed in the key sentence. Key Idea: When hot weather arrives and the nation takes to the outdoors, mishaps multiply. Drowning is the fourth most frequent cause of accidental

    asked on March 1, 2013
  7. Accounting

    CollegePak Company produced and sold 60,000 backpacks during the year just ended at an average price of $20 per unit. Variable manufacturing costs were $8 per unit, and variable marketing costs were $4 per unit sold. Fixed costs amounted to $180,000 for

    asked on July 4, 2012
  8. math

    A truck driver drive 49 miles in 1 1/3 hours. What was the average speed in miles per hour for this trip? Write the answer as a mixed fraction.

    asked on December 17, 2015
  9. Math

    14 cm piece of tape is cut into two pieces. The shorter piece is 2/5 as long as the longer one. which is the length of the shorter piece.

    asked on October 25, 2016
  10. math

    I need some help with this.. The swim team is selling key chains as a fundraiser. If its goal is to raise at least $180, how many key chains must it sell at $1.50 each to meet that goal? Write and solve an inequality.

    asked on January 18, 2018
  11. Math proportions

    If the wait time in line to ride a roller coaster is 20 minutes for 150 people how long is the wait time for 240 people? 240-150 = 90 people 150 people = 20 minutes 90 people= 40 minutes?

    asked on January 21, 2015
  12. physics

    a block with a mass of 3.7 kg slides with a speed of 2.2 m/s on a frictionless surface. the block runs into a stationary spring and compresses it a certain distance before coming to rest. what is the compression distances, given that the spring has a

    asked on February 11, 2014
  13. Physics

    Two automobiles, each of mass 800kg , are moving at the same speed, 18m/s , when they collide and stick together. At what speed does the wreckage move if one car was driving north and one east.

    asked on February 21, 2014
  14. chemistry (charles law)

    1.)A ballon is filled with 3.0L of helium at 310k.The balloon is placed in an oven where the temputure reaches 340k.what is the new volume of the ballon?

    asked on April 28, 2013
  15. Math

    Lions spend about 5/6 of their days sleeping. How many hours a day does a lion sleep?

    asked on April 13, 2015
  16. Math

    A store sells used DVDs for $8 each and used videotapes for $6 each. Write a function rule to represent total selling price of DVDs and videotapes. Then use the function rule to find the price if 5 DVDs and 3 videotapes

    asked on February 24, 2014
  17. English

    Click on the box to choose whether the italicized sentence supports the key sentence. Key Sentence: Alexander Solzhenisyn had much tragedy in his life. He became a victim of cancer while in prison.no or yes He later moved to America. yes or no His book One

    asked on March 2, 2013
  18. chem-speed at STP

    Hi- we were given this question and I have no clue how to figure it out...please help! Which gas molecules have the greatest average speed at STP? [a] SO2( sulfur dioxide) [b] NH3( ammonia) [c] O2( oxygen) [d] N20 (Dinitrogen oxide) Ok, at stp, that means

    asked on May 1, 2007
  19. math (need check answer)

    You are buying balloons for a party. A small balloon cost $3. A large balloon cost $4. Write an algebraic expression for the cost of x small balloons and y large balloons. Then find the total cost for 14 small balloons and 8 large balloons. Q1: An

    asked on October 8, 2014
  20. College Algebra

    Matt scored 75 on the calculus midterm. If the final exam counts twice as much as the midterm exam, then for wht range of scores on the final would Matt get an average between 81 and 92?

    asked on September 25, 2011
  21. Physics

    a 15.5 kg block is pulled by two forces. The first is 11.8 N at a 53.7 angle and the second is 22.9 at a -15.8 angle. What is the magnitude of the acceleration

    asked on June 12, 2019
  22. algebra

    Simplify the following expression: 4(20+12÷(5-3) I need help with just this question plz.

    asked on August 28, 2019
  23. math/geometry

    An architect is designing a small A-frame cottage for a new resort area. A cross section of the cottage is an isosceles triangle with an area of 98 square feet. The front wall of the cottage must a accommodate a sliding door that is 6 feet wide and 8 feet

    asked on February 19, 2012
  24. Chemistry

    Compound Z has a MW of 100. Your lab partner weighed 25 grams of compound Z and dissolved it in water to a final volume of 1 liter. a) What is the concentration of the solution expressed as a percentage by weight (w/v)? b) What is the concentration of the

    asked on August 29, 2011
  25. algebraic expression

    Lindsey has 47 coins in her change purse that are either dimes or quarters. If n represents the number of quarters she has, write an expression in terms of n that describes the number of dimes. The algebraic expression is _________ My answer is D + n = 47,

    asked on October 6, 2014
  26. English

    I have to tell if the verb is transitive or intransitive 1. Most people think of Bamboo as a tree or bush? 2. Bamboo belong to the grass family. 3. More than 500 kinds of bamboo grow in the tropic? 4.These plants thrive in warm climate. 5. People use

    asked on October 26, 2010
  27. English

    Please help me complete this sentence...Substitute lively _____ for boring,"tired" words.

    asked on January 19, 2009
  28. math

    Children are usually ready to understand the concept of length measurement if:

    asked on February 22, 2016
  29. chemistry (charles law)

    A 4.0L sample of methane gas is collected at 30.0 celcius .predict the volume of the sample at 0 celcius.

    asked on April 28, 2013
  30. language

    Write these words in alphabetical order. Alphabetize them to the second letter. grim, blot, sum, build, shelf

    asked on July 29, 2013
  31. Physics

    a sled starts from rest and slides down a 38.0 degree frictionless hill for 4.24 seconds. How fast is it going at the end

    asked on June 13, 2019
  32. Math

    A factory whistle blows every 30 minutes. The clock tower chimes every 15 minutes. If they both sounded at 1:00 p.m., at what time will you hear them both at the same time again?

    asked on February 4, 2015
  33. odu

    A toboggan approaches a snowy hill moving at 12.9 . The coefficients of static and kinetic friction between the snow and the toboggan are 0.390 and 0.290, respectively, and the hill slopes upward at 44.0 above the horizontal.

    asked on October 11, 2012
  34. calculus

    12. (1 point) The height y (in feet) of a ball thrown by a child is y = − 1 16 x 2 +4x+5 where x is the horizontal distance in feet from the point at which the ball is thrown. (a) How high is the ball when it leaves the child’s hand? (b) What is the

    asked on October 5, 2016
  35. math

    at this rate how many trucks would pass Luann if 90 vechicles passed her

    asked on February 2, 2016
  36. math

    21. Your class hopes to collect at least 415 cans of food for the annual food drive. There were 99 cans donated the first week and 112 more the second week. Write an inequality that describes this situation. Let c represent the number of cans of food that

    asked on January 22, 2018
  37. physics

    Hi: We have a homework problem that I have no idea even how to set up! please help! "A man jogs at a speed of 1.3 m/s. His dog waits 1.4s then takes off running at a speed of 2.8 m/s to catch the man. How far will they have to travel before the dog watches

    asked on September 11, 2007
  38. Physics

    a 2.35 water bucket is swung in a full cirlce of radius 0.824 m just fast enough so that the water doesn't fall out the top meaning n equals zero there. What is the speed of the water at the top

    asked on June 13, 2019
  39. chem

    what would the equation for this reaction be?; KAL(SO4)2.12H2O crystallizes out when water is cooled enough to cause the soluble ions to coalesce and precipitate out of solution.

    asked on October 24, 2017
  40. Chemistry

    how many grams of sucrose are needed to make 100 ml of a 10^-2 Molarity sucrose solution?

    asked on August 28, 2011
  41. english

    I need help with some literature homework. I need a to identify a baptism scene that's modern. And also how they were affected by the change. Also, need a piece of literature that has reflects or alludes to Shapespeare. Also need an example of when weather

    asked on July 30, 2009
  42. Finance

    Your client is 40 years old, and she wants to begin saving for retirement, with the first payment to come one year from now. She can save $7,500 per year, and you advise her to invest it in securities which you expect to provide an average annual return of

    asked on September 19, 2012
  43. Math

    DVD cases are 9/16 inch wide.. If Juan has 60 DVDs how many will fit on one shelf. Shelves are 2 1/2 ft long.

    asked on October 6, 2014
  44. Algebra

    Remember that the perimeter of a rectangle can be found with the formula . Write an inequality that will give the possible lengths and widths of his rectangular garden so that the perimeter of the garden will not be more than 60. Use x for the length of

    asked on January 25, 2011
  45. physics

    Hi: We have a homework problem that I have no idea even how to set up! please help! "A man jogs at a speed of 1.3 m/s. His dog waits 1.4s then takes off running at a speed of 2.8 m/s to catch the man. How far will they have to travel before the dog watches

    asked on September 9, 2007
  46. math

    a band held a concert in it's hometown a total of 15000 people attended the tickets cost 8.50 per student and 12.50 per adult the concert took in a total of $162500 how many adult came to the concert

    asked on November 7, 2012
  47. physics

    A uniformly charged conducting sphere of 1.2 m diameter has a surface charge density of 7.1 µC/m2. (a) Find the net charge in coulombs on the sphere. (b) What is the total electric flux leaving the surface of the sphere?

    asked on January 29, 2011
  48. math

    i'm supposed to find an area of a figure but i'm not sure what it is so therefore i don't know the formula. basically, it kind of looks like a capsule but more roundish like an oval. there's two lines down the middle that both measure at 18 ft. the bottom

    asked on May 19, 2016
  49. Pre-Calculus

    can someone help me with figuring out my math and explaining it to me. or How to use the calculator with the problems ?

    asked on June 9, 2013
  50. geometry concepts

    determine Which point is between the other two and three points are Collinear mn=32 nl=16 lm=48

    asked on September 17, 2011
  51. Algebra 2

    How do you write a function for a sinusoid? My Probelm has a Max of (9pi/8,1) and a Min of (3pi/8,-5).

    asked on April 10, 2019
  52. Geometry

    An unsharpened pencil is a regular hexagonal prism of wood with a cylinder of graphite in the middle. The hexagon has a side of 4mm. The graphite is 2mm in diameter. The pencil is 180 mm long. Determine the volume of wood in the pencil.

    asked on April 13, 2016
  53. writing

    She forcefully _______ her view that something needs to be done to reduce crime in the city in front of city council. A. asserted B. snarled C. murmured D. commented

    asked on February 26, 2015
  54. math

    Franco hikes 4 miles each day for 5 days. He carries 100 ounces of water with him. It takes him 1 hour to hike 4 miles. How many hours did he hike in 5 days?

    asked on January 26, 2015
  55. chem (boyles and charles law)

    A 1.00L balloon is filled with helium at 1.20 atm.If the balloon is sqeezed into a 0.500L beaker and doesnt burst ,what is the pressure of the helium?

    asked on April 28, 2013
  56. Physics

    A person pushes horizontally with a force of 190 N on a 67 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.23. (a) What is the magnitude of the frictional force? (b) What is the magnitude of the crate's acceleration?

    asked on October 23, 2011
  57. Math

    A girl's club is selling hats to raise money. They ordered 500 hats that cost$5.15 each. They will sell the hats for $18.50 each. All the hats were sold. How do you find the amount of money the club made after expenses?

    asked on February 23, 2015
  58. government

    How do ideological parties and single-issue parties differ from one another? A. Ideological parties tend to be more liberal, while single-issue parties tend to be more conservative. B. Ideological parties focus on certain beliefs, while single-issue

    asked on March 27, 2014
  59. physics 20

    DYNAMICS: a skier starts at the top of a 30m hill ta an anle of 20 degrees. the skier goes straight down the firctionless slope. How long will it take the skier to get to the bottom?

    asked on April 6, 2011
  60. physic

    ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore?

    asked on September 24, 2013
  61. math (long div.)

    please help me solve long division :( 1.)8 divided by 6984 (0.00114548) 2.)48 divided by 7584 (0.00632911) 3.)35 divided by 19933 (0.00175588) I know the answer to all of them but I don't know how to solve it the long way .

    asked on August 29, 2013
  62. algebra

    an individual has two low interest loans, one at 4% interest and the other at 6% interest. The amount borrowed at 6% is $250 more than the amount borrowed at 4% If the total interest for one year is $165, how much money is borrowed at each rate

    asked on June 27, 2011
  63. math 156

    describe two different ways that you could represent the number 0.80?

    asked on January 22, 2010
  64. biology

    List 2 ways in which prokaryotic and eukaryotic cells are alike and 2 ways in which they are different. Is this correct? Alike= cell membrane and DNA Different=ribosomes and mitochondria

    asked on October 19, 2011

    The time in hours it takes a satellite to complete an orbit around the earth varies directly as the radius of the orbit (from the center of the earth) and inversely as the orbital velocity. If a satellite completes an orbit 860 miles above the earth in 12

    asked on October 12, 2011
  66. math

    A 26’ long painting is how many yards long?

    asked on June 14, 2011
  67. Chem

    How do you figure out the Noble Gas Configuration? Also, why do you not put in the "p" level and when do you( if you even do) put it in? You need to be more specific about your question. Elements that lose electrons (Na, Ca, Al, etc) gain the noble gas

    asked on March 20, 2007
  68. physics

    a satellite orbits earth mass=5.98x10^24 once every 8 hours. At what radius does the satellite orbit

    asked on June 14, 2019
  69. Pre-calculus

    Use a graphing utility to approximate any relative minimum or maximum values of the function g(x)=x sqrt4-x Not getting this one, either. Thanks.

    asked on November 21, 2011
  70. human services

    What have been the most significant changes in human services over the past 50 years? How has society’s responsibility to individual needs changed in the last 10 years? What do you think the role of human service workers will be in the future?

    asked on December 8, 2009
  71. physics

    questions( there are 3 so I will # 1-3) info: A 18.9 kg object is attached to a cord that is wrapped around a wheel of radius 10.7 cm. The acceleration of the object down the frictionless incline is measured to be .9 m/s2. Assume the axle of the wheel to

    asked on March 24, 2008
  72. language arts

    What is the adverb in the following sentence: Historically, the name Pearl Harbor has significance?

    asked on May 15, 2012
  73. 6th Math

    Don decided to do some landscaping in his backyard. He began by watering the lawn. The rotating sprinkler that he installed can spray an area with a radius of 7 feet. What is the maximum area the sprinkler can cover? a. 21.98 ft(2) b. 28.26 ft(2) c. 43.96

    asked on March 1, 2012
  74. physics

    A speeder passes a police car while traveling 130km/h. the police car imediently starts to accelerate at 10m/s^2 until the police car catches up to the speeder. how long does it take the police car to catch up?

    asked on February 23, 2011
  75. temperature change

    What is the temperature change when 9.8 g of KNO3( with 34.9 kJ/mol enthaply of solution) is dissolved in 150 g of water? Assume that the specific heat capacity is 4.18 J/K*g. Answer in celcius. So far I have the Q= ^T*m*s but i don't know what numbers go

    asked on May 29, 2007
  76. math

    y = -1/6 x + 5 identify the slope and the y-intercept of the equation.? how you would graph this line using the slope-intercept method. ? my teacher is saying im still getting the wrong answer:( please help

    asked on October 11, 2013
  77. physics

    Two cars both travel along a straight road Northbound. At t = 0, the car 1 is 190.6 m further north than car 2. Also at t = 0, car 1 is travelling at 24.3 m/s, and car 2 is travelling at 5.7 m/s. Car 1 is slowing down with an acceleration of magnitude 0.28

    asked on September 19, 2012
  78. geometry

    The length of a rectangle is 1 meter less than three times the width, the perimeter is 46 meters.

    asked on September 2, 2010
  79. physics

    hello! I have been having a lot of trouble with one physics problem that I have for homework: any help would be greatly appreciated! 'A block of mass 12 kg starts from rest and slides a distance of 8 m down an inclined plane making an angle of 40 with the

    asked on November 25, 2007
  80. English

    Score 1. Choose two of the scientists you read about in the Stories of Scientists unit. Compare and contrast these scientists. Answer this question in no fewer than two paragraphs. Be sure to include specific details about each scientist’s life, career,

    asked on January 13, 2015
  81. math

    –x + 6y = 30 y = -1/6 x + 5 how do I identify the slope and the y-intercept of the equation for the second one and change the equation into slope-intercept form for the first one? I will do the rest on my own thanks

    asked on October 11, 2013
  82. (chem) this will make me or break me :(

    1.If the pressure of the gas in a 2.31 L balloon is 0.120 atm and the volume increases to 7.14 L, what will be the final pressure of the air within the balloon? Round to the nearest hundredth. Don't forget the units. 2.At a pressure of 2 atm, hydrogen gas

    asked on May 23, 2013
  83. Physics

    A block of mass m1 = 6.25 kg on a frictionless plane inclined at angle θ = 30.7° is connected by a cord over a massless, frictionless pulley to a second block of mass m2 = 2.36 kg hanging vertically (Fig. 5-52). (a) What is the acceleration of the

    asked on October 16, 2011
  84. AED 204

    explain in no more than 150 words per law, what requirements each law places on educators in their classrooms Case Law Brown v Board of Education Parc v The Commonwealth of Pennsylvania Mills v Board of Education Section 504 of Public Law 93-112 Public Law

    asked on June 25, 2010
  85. Critical Thinking

    I think i have some of the answers right but i need help, b/c although i keep reading over the chapter and highlighting the vocab word the definition is not clear to me. Can someone help please? 1 A(n) is a set of claims intended to support or prove a

    asked on October 24, 2008
  86. ecology

    what are the soil types of barcelona, spain and sydney, australia?

    asked on October 13, 2008
  87. physics

    ok so I really don't get 2d collisions and I thought I knew how to do this one but I have no idea: A 104 kg baseball player jumps up verticlly to catch a baseball of mass .254 kg traveling horizontally with a speed of 28.6 m/s. If the vertical speed of the

    asked on December 16, 2007
  88. physics

    Hi! I have a problem for physics homework and I though I knew how to solve it but apparently it is wrong, please help! 'Two cars, one of mass 1000 kg, and the second of mass 2400 kg, are moving at right angles to each other when they collide and stick

    asked on December 13, 2007
  89. math

    The Melt in Your Mouth Chocolate Factory is a rectangular building. The distance across the front of the store is 98 yards. The distance from the front to the back is one-third of this distance. If the owners paint a sign all the way around the outside of

    asked on October 21, 2007
  90. sociology

    According to Piaget, children develop through a series of stages that: lead all children to the final and most advanced stages of logical thinking. are unpredictable and unique to each child. are unpredictable, but nevertheless lead to the most advanced

    asked on October 7, 2018
  91. physics

    A 61.0 -kg bungee jumper is standing on a tall platform (h0 = 46.0 m), as indicated in the figure. The bungee cord has an unstrained length of L0 = 9.00 m, and when stretched, behaves like an ideal spring with a spring constant of 76.0 N/m. The jumper

    asked on November 25, 2014
  92. science

    An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT?

    asked on December 6, 2013
  93. chem word problem

    A balloon is filled with 14 L of gas at 302 K. What is its temperature in Kelvin when the volume expands to 20 L? Round to the nearest whole number. Don't forget the units.

    asked on May 10, 2013
  94. math

    Consider the following sums of numbers and how they are formed: 1 odd number } 2 odd numbers 678 3 odd numbers 64748 Predict the following sum and complete the generalization: a. 1 + 3 + 5 + 7 + 9 + 11 = ? b. 1 + 3 + 5 + Á + (2n - 1) = ?

    asked on January 20, 2010
  95. math 156

    Jennifer considered the numbers 4, 24, 44, and 64 and noticed that they all ended in 4 and that they can be divided evenly by 4, leaving no remainder. She concluded that all numbers that end in 4 can be divided evenly by 4. What type of reasoning did

    asked on January 20, 2010
  96. 11th grade

    This item can give a president real leverage in influencing Congress

    asked on December 14, 2009
  97. physics

    ok so I really don't get 2d collisions and I thought I knew how to do this one but I have no idea: A 104 kg baseball player jumps up verticlly to catch a baseball of mass .254 kg traveling horizontally with a speed of 28.6 m/s. If the vertical speed of the

    asked on December 16, 2007

    I have no freaking Idea on how to do this 4) R {1,2,3,4,7} T{3,5,6,7} What is the intersection of R & T? 5) What are the subsets of {-2,-1}?

    asked on January 24, 2018
  99. Math

    A mixture of peanuts and walnuts sells for $3 per pound. How many pounds of peanuts at $1.50 per pound should be mixed with 12 pounds of walnuts at $4 per pound

    asked on April 14, 2016
  100. math

    an office manager is renting a local hall for un upcoming event. The hall costs $200. The food costs $14 per person. The office manager is not sure how many people will attend. Which quantity is not a variable quantity - the cost to rent the hall, the

    asked on October 6, 2014


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