1. Physics

    Steam of mass 11.0 g at 100°C is added to 126.7 g of ice at 0.00°C. Find the final temperature of the system.
  2. physics

    200g of steam at 110°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?
  3. chemistry

    What is the total change in entropy when 10.0 g of ice melts at 25.0°C? DHfus = 6.01 kJ/mol The answer is 1.03 J/K but idk how to find it.
  4. Physics

    If the visible part of an ice berg is 50mx50m in area and 20m is above the surface, what is the height, h? I tried using FB=FG but I don't get anywhere. Can anyone help me out?
  5. chemistry-

    How do I construct an ICE table for this question. CH3COOH + NaOH --> CH3COONa + H2O Fill in the equilibrium line of the table. [Think about the initial pH and think about the pH at the end point of the titration. Initial pH 2.72 When the solution turned
  6. Physics

    A luggage handler pulls a 20kg suitcase up a ramp inclined at 25 degrees above the horizontal by a force F of magnigutde 145N that acts parallel to the ramp. The coefficient of kinetic friction between the ramp and the incline is .30. If the suitcase
  7. english part 1

    Which of the following best expresses the writer's main idea in “Single Room, Earth View”? A. Space exploration leads to human progress. B. Space travel offers a unique view of Earth. C. Astronauts are highly trained scientists. D. Pollution is
  8. Mathematics

    A travel agency offers group tours at a rate of $60/person for the first 30 participants. For longer groups-up to 90-each person receives a$0.50 discount for every participant in excess of 30. For example, if 31 participate, the cost/person is $59.50.
  9. Acct

    One of the companies for which you provide accounting services offers office cleaning services and has 8 customers. Cleaning services are provided in the evenings, Sunday through Thursday, at a rate of $30 per day. Billing is done every Friday. During the
  10. AP Calculus AB

    A river boat company offers a 4th of july trip to an organization with understanding that there will be at least 400 passengers. each ticket is $12, and company agrees to refund $.20 to every passenger for each 10 passengers in excess of 400. find the
  11. Science help.

    Which of the following characteristics of the Arctic rabbit is specifically an adaptation to living in the tundra? small size keen eyesight strong legs white fur*** Which set of words below could be used to describe the dispersal of seeds to a new region?
  12. acids and alkalis

    can you tell me me some acids and alkalis that are used in the house acids. vinegar(acetic acid), lemon juice (citric acid), cream of tartar (potassium hydrogen tartrate), vanish (sodium hydrogen sulfate--but I think the newer product has changed the
  13. Physics

    a 975 N object is pulled at a constant velocity up an incline with a force of 327 n parallel to the incline as shown in the diagram. Assume that the difference between the work output and the work input is the work required to overcome friction. a) what is
  14. physics

    A 975 N object is pulled at a constant velocity up an incline with a force of 327 n parallel to the incline as shown in the diagram. Assume that the difference between the work output and the work input is the work required to overcome friction. a) what is
  15. Advanced Chem- Intermolecular Forces of Attraction

    Answer/ explain the following in terms of intermolecular forces and properties of the substances referred to in each situation. 1. Why is it that if a glass is slightly filled above the brim with water, the liquid does not overflow? 2.Induced dipole forces
  16. english

    First you get to read something on the Internet or in your favorite magazine, and then write a summary of it. Choose any subject of interest to you personally (stamps, bees, security alarms, global warming, sports, etc.) and read about it (or listen to a
  17. eng college

    Can someone please help revise. It is a proposal for a research paper! Thank You! Work and family are both central to our way of life. Finding a balance between the two is an issue of importance to men, women, and employers. Therefore, I will argue that
  18. u.s. history

    Which of these is a major reason colonists came to Massachusetts? "Colonial America has great farmland." "Colonial America offers religious freedom." "The American colonies are rich with resources, such as gold." "The American colonies offer a second
  19. Ed Tech

    Adding to slides in a presentation a. offers effects when moving from one slide to the next. b.adds animation to selected text and images. c.adds a new slide to a presentation in Microsoft Powerpoint d.creates sound effects connected to an image. Is the
  20. HSM/220

    You are the executive director of an established not-for-profit, community-based organization provider that offers high-quality educational, vocational, and training services to various segments of the local population. In response to the increasing
  21. Science physics

    mandy drops a 2.0kg book from a height of 4.5m. how much work has gravity done on the book? M=2.0kg D= 4.5m Not actually sure what to do next. Because none of the formulas work. I need work but I don't even know the force. To find force I need mass which I
  22. creative play

    A preschool class is asked to come up with ways to reorganize their toys because a few of the bins are overflowing. The class sits together and offers suggestions and ideas and then puts their plan into action. All the children help to organize the toys
  23. english

    Could anybody check my English essays? I'm looking for native English teacher who is willing to help me with improving my written language. For achieving this goal I'm going to write rather long essays on humanitarian subjects. I don't need lengthy
  24. Intermediate Algebra (Math)

    HELP PLEASE, Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -2x Ð 8y = 22 -6x Ð y = 20 At first I tried to multiply by 8 but that did not work.
  25. Science

    In the space below, write a paragraph describing the work of a chemical engineer. Include a description of the different industries that they work in and the skills they need to be successful Need Help!!!!
  26. Biology

    Needed to transport proteins and lipids throughout cytoplasm. Must be able to work within complicated membrane passages. Some positions involve work with ribosomes
  27. Science

    PLEASE HELP Science Test Friday Study Guide? I have 1 to 22 already but I am stuck now I have to have this completed and correctly for my study guide. I have a C right now I need an A on this test to bring it up to a B or I stay on restriction please help
  28. Science

    PLEASE HELP Science Test Friday Study Guide? I have 1 to 22 already but I am stuck now I have to have this completed and correctly for my study guide. I have a C right now I need an A on this test to bring it up to a B or I stay on restriction please help
  29. math/algebra

    divide: x^2 + 2x -15/4x^2 divided by x^2-25/2x-10 answer choices a) x-3/2x^2 b) x + 3/2x^2 c) 2x^2/x + 3 d) 2x^2/x - 3 any your work is? any your work is? (x-3)(x+5)/4x^2 * 2x-1/x^2-25= x-3/2x^2
  30. science

    How much work is done on a 30 N rock that is lifted 1.5 m off the ground? show work.
  31. english

    I've forgotten how to work it out or i forgot how to work it out which one makes sense?
  32. Science (8th grade)

    How do cell phones work? I know they use radio waves, but how do they actually work??? Thanks :)
  33. English Defn

    Does work work refer to the type of paid employment? Yes or no?
  34. math

    what is 120% of 40? show work or tell how you did it I laid out the others, you try this one, and I will critique your work.
  35. English

    Explain how the historical context of a work can impact that work?
  36. Literature

    I am doing a collage about Fahrenheit 451 and basically we have to make a collage with chunks of writing about quotes that relates back to our proposal. Would It be okay if someone looked at it? Proposal: I am interested in how the government doesn’t
  37. PHYSICS

    A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The
  38. Physics

    A 58 kg woman is ice-skating toward the east on a frictionless frozen lake when she collides with a 94 kg man who is ice-skating toward the west. The maximum force exerted on the woman by the man during the collision is 210 N, west. Take east to be the
  39. Physics

    A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the
  40. Physics

    A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the
  41. Physics

    A rescue helicopter lifts a 70 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 9 m.  What is the tension in the cable?  How much work is done by the tension
  42. Physics

    A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the
  43. maths

    For a certain amount of work,it takes john 6 hours less than tommy,if they both work together,it takes them 13 hours 20 minutes,how long will it take tommy alone to complete the work
  44. Math

    3 men and 4 boys can do a piece of work in14 days , while 4 men and 6 boys do the same work in 10 days . How long would it take one man to finish the same work?
  45. physical science

    Which description does the phrase "mechanical advantage" most closely relate to? A. The same amount of work using less force. B. The same amount of power using less work. C. The same amount of work using less power. D. The same amount of power using less
  46. math

    factor down (4^3)^2 ____ * _____ ______ _______ ______*______ _____ ____ when is it not possible to work an exponent multipication? In the space below give an example and work it out to prove what you say does not work
  47. chemistry

    The analysis of halogenated hydrocarbon gave the following results: A sample of mass m=255mg produces 273.7 mg carbon dioxide and 130.6 mg of water .A second sample of mass 87 is treated by hot molten sodium .The obtained mixture is dissolved in distilled
  48. Physics

    During an adiabatic process, the temperature of 6.50 moles of a monatomic ideal gas drops from 525 °C to 169 °C. What is the work done? Here is my work, is it correct? T1 = 525+273 = 798 K T2 = 169 + 273 = 442 K work done = R[T2-T1]/1-gamma = 8.314[525 -
  49. Ed. tech HELP!!!

    Adding transitions to slides in a presentation A. Offers effects when moving from one slide to the next. B. Adds animation to selected text and images. C. Adds a new slide to a presentation in Microsoft Powerpoint. D. Creates sound effects connected to an
  50. business law

    Janet Wilson accepts an IOU from her employer in place of a paycheck. Wilson offers the IOU as payment for her groceries. Do you think the grocery store is likely to accept this type of payment?Why? My answer: No, because an IOU is not a reliable source of
  51. geometry

    a hotel offers the following specials: plan a is two nights and one meal for $106. plan b is 2 nights and 4 meals for #130. what price is the hotel charging per night and per meal ??
  52. math

    Theater prices: Adult- $6.00 Student- $3.00 4 adult tickets and 6 student tickets on a night that offers the special deal that a free ticket is given with each ticket purchased
  53. Math

    Peter received a six month post dated check for 100,000 (the check can only be cashed after six months) he offers it to a friend for 92,000 .His friend's money is presently earning 10% compounded monthly.If there is 20% withholding tax on interest ,which
  54. physics

    You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object's speed. If you do work W, suppose the object's final speed is v. What will be the object's final speed if you do twice as much work? 1. 4 v 2.
  55. math

    Automobiles and small trucks make up 84% of the travel to and from work in the US. What fraction represents all other means of travel to and from work in the US? How would I set this up, I am guessing the answer is 16% but I have no clue how to get the
  56. Quantiative Methods

    Western Family Steakhouse offers a variety of low-cost meals and quick service. Other than management, the steakhouse operates with two full-time employees who work 8 hours per day. The rest of the employees are part-time employees who are scheduled for 4
  57. Physics

    Ok work... work = net force parallel to displacement lets say something was pushed up a ramp at a constant velocity and you were asked how much work was done by pushing the block well the forces parellel to the displacement is the x component of gravity
  58. Physics Disaster XXP

    Had The Same Teacher For Physics And Ughh I Am Stuck. Notes Help Me A Lot So If Anyone Could Write A Few Or A Bunch Out That Would Be Awesome. I Am Not The Type Of A Person Who Minds Writing Down Notes;) Teacher Told Us About Work And That The Formula For
  59. Physics Disaster

    Had The Same Teacher For Physics And Ughh I Am Stuck. Notes Help Me A Lot So If Anyone Could Write A Few Or A Bunch Out That Would Be Awesome. I Am Not The Type Of A Person Who Minds Writing Down Notes;) Teacher Told Us About Work And That The Formula For
  60. life orientation

    what is a human and social factors that cause ill-health,sickness,trauma,accidents,crises and disasters within the context of a local contemporary environmenta issue
  61. Health

    what would be the best resource to learn more bout martial arts. a- phone book b- dance studio c- local bait shop d- public golf course my answer is a
  62. government

    both major parties; A) ARE CENTERED around a specific political and social philosophy b)are often decentralized and fragmented C)only operate on a local level D) concede elections when they do not have enough support
  63. history

    if a positive factor for harvesting trees is encouraging local industry, a negative could be A. loss of habitat B. mining accidents C. unemployment D. water pollution I think A
  64. math

    Find the first and second derivative of the function y=f(x)=x^3/(1-(x^2)) Use the information about the derivatives to determine any local maxima and minima, regions where the curve iss concave up or down, and any inflection points
  65. Texas history

    Dakhart and Stamford host reunions for? War veterans Descenddants of their first families local fraternities and sonorities cow hands who once worked in the area I think Its A am I right?
  66. Ethics

    Race in Baton rouge (community) or louisiana. consider relations within neighborhoods, local government, service groups, clubs, schools, workplace or any environment.
  67. History

    The responsibility of compiling the data from the Domesday Survey fell to The Norman King the shire tenant in chief the office of the Exchequer the local sheriff none of the above
  68. Economics

    Can someone please explain the difference between these, and how they apply to someone that has monotonic preferences? I have read in the book but they all seem to be running together and am so confused! Thank you. Symmetry Convexity Local Non-satiation
  69. physics

    DRWLS: PLEASE SEE ADDITIONAL INFO AT THE BOTTOM its the second part of the question that I don't understand: according the graph shown, the net force acting on an object varies wth the object's displacement. Calculate the work down by the force on the
  70. phy

    A constant force does 12.0 Joules of work pushing a 350 gram block a distance of 2.5 meters up a ramp. The block starts from rest and reaches a speed of 4.75 m/s after being pushed for 2.5 m. The block’s potential energy increases by 5.0 J as it travels
  71. English

    Writeacher, here are the sentences I urgently need you to check. 1)Though you are still a student, refer to the type of approach to work you may adopt when working. Would you work at a job, at a career, or at a passion? 2) Write at least five phrasal verbs
  72. Psychology

    The morning was frigid and the roads covered with ice. As Paula drove to work, she was cautious, especially in less-traveled areas. When she entered the main highway, the situation was worse than she expected. As she passed a truck that had slid off the
  73. Physics (thx drwls, bobpursley)

    After reaching terminal velocity, a raindrop of m=3.06E-4kg falls vertically down a distance of 500m. a)what is the work done by the force of gravity on the raindrop? sol) since the displacement is in the same direction as the force, the work done is
  74. Chemistry

    (Paper Chromatography) 1. What carrier solution might work well to separate newspaper inks? Why? 2. What carrier solution might work to separate different salts? Why? 3. What carrier solution might work to separate different fatty acids? Why? I really have
  75. Chemistry

    A system has an initial energy of 117 joules. The energy equation includes --40.1 J of heat and -20.3 J of work. What is the final energy? Was heat added to the system or to the environment? Was work done by the system or to the system? Be sure to show all
  76. Health (Ms. Sue)

    State five ways to refuse if a friend offers alcohol to you. A: If my friend offered alcohol to me, I could refuse by giving reasonable reasons of why I choose not to drink, stating the consequences that could result if I do drink, leaving the situation,
  77. Physics

    Why bother using a machine if it cannot multiply work input to achieve greater work output? Please help; need a original answer no Google search. Thank you in advance...
  78. Business Management

    Which of the following is not a factor that affects how work is organized? A. Mangement style B. Customer influences C. Company size D. Competitor work styles I ruled out C. & D., but need help with the others.
  79. computers

    How did this invention or innovation assist in completing work? How was work done previously?  What social, cultural, political, and economic impacts did this event have on society?
  80. chemistry

    what is the oxidation number for nitrogen in the following? NH3 NO2 1- N2 NO2Cl N2H4 We will be happy to critique your thinking or work. I don't even have a clue as to how to work it out.
  81. basic geomectry

    Would please somebody help me answer the geometry work that I posted . these is for my G.E.D . Your question was already answered, although the many problems it contained were not solved for you. That is something you are going to have to make an effort at
  82. computers

    How did this invention or innovation assist in completing work? How was work done previously?  What social, cultural, political, and economic impacts did this event have on society?
  83. math

    DO you have to type all of the information in when submitting the work to be viewed. I have already done the work and I have the answers also. It is 36 questions . Is there anyway I can send it to an email. This is a very important assignment and i just
  84. Physics

    At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? (Gravitational pull is 9.8m/s2, W(J)=F(N)*D(m) How do I work this problem??
  85. Ms. Sue please check my answer

    People don't buy from local merchants Local people don't have jobs Prices may be higher People aren't self-sufficient What other disadvantages have you thought of? # geography (grade 6) - Ryan, Sunday, September 19, 2010 at 9:55pm interest rate goes up and
  86. English

    Can you help me check these sentences on family and hobbies? I need to know if the word choice is correct. Thank you. 1)I’ve got short, curly, blond hair and blue eyes.In my family we are three: my mother, my father and I (not me). Correction: In my
  87. law

    can some one please help me this is late work i need to get done A federal agent is reporting to his first post of duty after the academy to a small resident office at which you work. You and a few others are included in a meeting to provide administrative
  88. Math

    Esther drove to work at 45 miles per hour. Returned home at 30 miles per hour. If Esther spent a total of one hour commuting to and from work, how many miles did Ester drive to work in the morning?
  89. Math Word problems

    an office where 8 secretaries work 8 hours a day 5 days a week decided it needs 336 hours a week of secretarial work. How much more or less will each secretary have to work each week to equally share the 336 hours.
  90. physics-speed

    i need help with this one thanks A particle starts from rest and is acted on by a net force that does work at a rate that is proportional to the time t. The speed of the particle is proportional to: a. sq. root t b. t c. t^2 d.1/sq. root t e. 1/t Work done
  91. catering

    According to your study unit, a catering resource that offers global networking for caterers, mentors, a caterer's telephone hotline, and many marketing opportunities is the A. International Caterers' Association. B. National Restaurant Association. C.
  92. science

    A quantity of steam (750 g) at 122°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?
  93. science

    A person has a mass of 50.0 kg. What is the pressure they exert on the blades of their ice skates if each skate blade is 15.0 cm long and 5.00 mm wide?
  94. physics

    Calculate how many joules of energy would be needed to take 2kg of ice at -5 and turn it all to steam at 100 degees celcius?
  95. science

    im trying to figure out what would happen if 4500 calories of heat are added to a 50 gram ice cube at -10 degrees celsius
  96. Chemistry

    What quantity of heat is required to convert 200g of ice at 0.00C into water at 50C? I know that im suppose to use the E=mc(Delta T) but im not sure how...
  97. Chemistry

    Calculate the total amount of heat that must be added to convert 15.7g of ice at its melting point to steam at 100.0°C
  98. Chemistry

    What is the final temperature after a 11.9 g piece of ice is placed into a Styrofoam cup containing 110 g of hot water at 73.3 degrees Celsius?
  99. physics

    Jessica stretches her arms out 0.6 m from the center of her body while holding a 2 kg mass in each hand. She then spins around on an ice rink at 1.1 m/s.
  100. Chemistry

    calculate the energy needed to warm the melted ice from 0 degrees celsius to the final temperature of the water