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

    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
  4. 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
  5. 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
  6. 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
  7. 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
  8. physics

    a cyclist does work at the rate of 500w while riding. how much force does her foot push with, when she is traveling at 8.0 m/s?

    asked on January 22, 2016
  9. 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
  10. 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
  11. math

    a car is driving at a speed of 60 mi/h. What is the speed of the car in feet per minute?

    asked on November 28, 2010
  12. algebra

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

    asked on August 28, 2019
  13. math

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

    asked on February 22, 2016
  14. 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
  15. 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
  16. 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
  17. 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
  18. chemistry

    In your own words, describe what a catalyst does in a chemical reaction.

    asked on April 26, 2020
  19. 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
  20. 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
  21. 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
  22. 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
  23. (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
  24. Chemistry

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

    asked on August 28, 2011
  25. physics

    Jack, jill and spot go out for a picnic at the side of the river. jack takes spot for a jog. jack and spot are on the wast bank of the 30m wide river when jill is on the east side. the rivers current is 0.75m/s south. a) spot jumps into the river and swims

    asked on March 16, 2011
  26. physics 20

    Jack, jill and spot go out for a picnic at the side of the river. jack takes spot for a jog. jack and spot are on the wast bank of the 30m wide river when jill is on the east side. the rivers current is 0.75m/s south. a) spot jumps into the river and swims

    asked on March 16, 2011
  27. 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
  28. science

    another name for the gas form of water, water _____ ? 6 letters

    asked on April 28, 2008
  29. 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
  30. 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
  31. 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
  32. 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
  33. Math

    Please solve: t/2 + t/6 = 2.

    asked on September 22, 2015
  34. Math

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

    asked on April 13, 2015
  35. chemistry

    What is the theoretical yield of H[2]O (in grams) if 8.3 mol H[2]S were consumed in the above reaction? If 137.1g of water was actually collected after the reaction, what is the percent yield? I have no idea to do this problem. I am not good in math at all

    asked on March 26, 2015
  36. 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
  37. 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
  38. 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
  39. 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
  40. 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
  41. Calculus

    Differentiate ln(cos(2x))

    asked on May 1, 2013
  42. 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
  43. math ALG 2!

    Write the following value in scientific notation. 7,400,000 7.4x10^3? help?

    asked on March 19, 2013
  44. math ALG 2!

    A blue bike is $14 less than a red bike. The sum of their prices is $300. How much is the red bike? i thought it was 123 but i think its wrong.plz help

    asked on March 19, 2013
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. marketing

    true or false? without the marketing concept, a business will develop a product or service and then decide how to market the product

    asked on March 31, 2010
  52. math 156

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

    asked on January 22, 2010
  53. Chemistry

    What is the concentration in % (m/v) of a solution with 75 g K2SO4 dissolved in 1500 mL of solvent?

    asked on April 19, 2020
  54. Accounting

    General Motors has always shut down for one week at the end of December for routine maintenance of the company’s equipment. The annual maintenance is essential to ensure that it's equipment can meet the precise specifications of customers. For the past

    asked on February 13, 2020
  55. Math

    There are 36 girls with red shirts. There are 19 boys with red shirts. There are 16 girls with blue shirts. How many children have red shirts?

    asked on October 2, 2019
  56. Math

    There are 36 girls with red shirts. There are 19 boys with red shirts. There are 16 girls with blue shirts. How many girls are there?

    asked on October 2, 2019
  57. 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
  58. 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
  59. 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
  60. 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

    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
  62. 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
  63. 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
  64. Math

    Bill cut a piece of cloth into 2 pieces. The length of the shorter piece is 5/9 of the longer piece. A find the ratio of the length of the longer piece to the length of the shorter piece to the total length. B if the longer piece is 148.6cm longer than the

    asked on December 6, 2017
  65. algebra

    find the zeros: x^2 - 2x + 8

    asked on May 24, 2017
  66. Chemistry

    How much does 1.0 ft^3 of mercury weigh given the density of mercury is 13.6 g/ml?

    asked on January 25, 2017
  67. Geometry

    Find mAD if CA is a diameter of circle P

    asked on June 15, 2016
  68. Math

    The perimeter of an isosceles triangle is four times the length of the shortest side. The longer sides are 4.5 feet longer than the shortest side. What is the length of each side of the triangle?

    asked on May 31, 2016
  69. science

    calculate delta E & delta H when 100dm^2 of helium at S.T.P are heated to 373k in a closed container. assuming that the gas behaves ideally and CV=12.55g/mol

    asked on May 24, 2016
  70. 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
  71. 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
  72. 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
  73. math

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

    asked on February 2, 2016
  74. math

    14.2 is 35.5% of what number? 3/4 is 60% of what number? What number is 25% of 7/8?

    asked on January 21, 2016
  75. 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
  76. algebra

    Layla wants to buy fish, chicken or some of each. The fish cost $4 per pound and the chicken cost $3 per pound. She will spend at least $11 no more that $15. What is the system of inequalities to model this is situation

    asked on August 16, 2015
  77. 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
  78. 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
  79. 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
  80. MAT222

    I would like to know if the following are correct and if not how and what did I do wrong. 27^-2/3 27^-1/3 = 27^-2/3 - -1/3 = 27^-3/3 sqrt 27 (a^1/2b)^1/2 (ab^1/2) = a^5/4b

    asked on January 15, 2015
  81. 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
  82. Math

    Kayla went to a football game. Her team scored 6 times, and got the extra point each time. A touchdown with an extra point is worth 7 points. How many points did her team score? If the other team scored 2 more times than her team and got 7 each time, how

    asked on January 12, 2015
  83. Calculus

    Lines tangent to the curve y-1=2x^2+3x pass through the point A(2,-1). Find the x-coordinate(s) of the point(s) of tangency. The answer is 2+2^1/2, 2-2^1/2, I just don't know how to get there. Please help! Thank you!

    asked on December 7, 2014
  84. 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
  85. 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
  86. 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
  87. 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
  88. 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
  89. 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
  90. Sociology

    Research on children raised in orphanages has found that?

    asked on September 23, 2014
  91. algerbra

    translate the equation 3 over 5-5=x(y+7)into a verbal sentence

    asked on June 19, 2014
  92. 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
  93. 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
  94. algebra 1

    Find C intersection D. C: {3, 6, 9, 12, 15, 18} D: {numbers divisible by 2 from 1 to 20} {2, 4, 6, 8, 10, 12, 14, 16, 18, 20} {6, 12, 18} {2, 3, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20} { } I really think its the second one but im so confused.

    asked on November 1, 2013
  95. 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
  96. alg 1 help?

    If A = {0, 1, 2, 3} and B = {c−3, −2, −1}, what is A ¿ B? ? help?:(

    asked on September 12, 2013
  97. Maths

    Jessica needs to construct a rectangular outdoor dog pen. The pen must have 4 sides. I need to draw 6 different shaped rectangular pens, seen from the top, using 24m of fencing.

    asked on August 8, 2013
  98. language

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

    asked on July 29, 2013
  99. alg 1

    6(4) ÷ 2 − 1 + 5 I don't understand how to do it step by step

    asked on July 10, 2013

    What are the three most significant concepts you have learned in this course that you would include in a speech supporting incorporation of health psychology concepts into health care policy? Please explain why you would incorporate (why are they

    asked on June 18, 2013


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