Questions Asked on
March 25, 2010

  1. AP Chemistry

    In 1.33L container, 4.20 AB3, is heated to 400C, and 2.98x10-2(negative 2) moles of A is present at equilibrium. AB3(g) A(g)+ 3B(g) (28.23amu) (a.) Write the expression for K (b.) Calculate the equilibrium concentration of the following gases (i.) B (ii.)

    asked by sheer
  2. Calculus-math

    If g(x) is the inverse of f(x), g(x)=f^-1(x), such that g(3)=5 and f'(5)=4 what is the value of g'(3)????? :O 2. If g(x)is the inverse of f(x), g(x)=f^-1(x), such that f(3)=15,f(6)=3,f'(3)=-8,and f'(6)=-2. What is the value of g'(3)???????? Calculus--

    asked by ]akeT
  3. algebra

    Take any number (except for 1). Square that number and then subtract one. Divide by one less than your original number. Now subtract your original number. You reached 1 for an answer, didn’t you? How does this number game work? (Hint: Redo the number

    asked by Anonymous
  4. biology

    What are the storage and quick energy forms of carbohydrates found in animals, and how are these forms structurally related to each other?

    asked by eric
  5. biology

    Insects that live on land have a coating of wax on the outer surface of their body. What function might this wax serve for these animals?

    asked by eric
  6. physic

    A student on a piano stool rotates freely with an angular speed of 3.07 rev/s. The student holds a 1.38 kg mass in each outstretched arm, 0.759 m from the axis of rotation. The combined moment of inertia of the student and the stool, ignoring the two

    asked by Mary
  7. Biology

    What is the process of cellular respiration and why is it so important? Thank you.

    asked by Angelica
  8. Biology

    What is the process of cellular respiration and why is it so important? Thank you.

    asked by Angelica
  9. college chemistry

    a student did an alkalinity determination correctly,except that the sample titrated had a volume of 90.0 mL. Volume A was found to be 4.50 mL and Volume B was 7.00 mL. 1)Calculate the Alkalinity value from these data and then calculate the correct

    asked by alissa
  10. chemistry

    When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

    asked by josh
  11. Calculus

    Lef f be the function defined by f(x)=x^3+x. If g(x) is the inverse of f(x), g(x)=f^-1(x) and g(2)=1, what is the value of g'(2)?

    asked by ]akeT
  12. Chemistry

    How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?

    asked by Danny
  13. Ethics

    I am supposed to have a 1,400- to 1,750-word autobiographical research paper analyzing the influences of race as it relates to my community. Need to write a first-person account of how human interactions in my community have been racialized. For the

    asked by Freddie
  14. Chemistry

    What is the pH of a 0.200M solution for HBrO? Ka = 2.8 x 10^-9

    asked by Danny
  15. French

    Is this correct? He saw construction workers building new buildings and he thought they worked hard for their dream and the buildings represent hope and future. Il a vu les travailleurs de construction de construire de nouveaux bâtiments, et il pensait

    asked by sh
  16. accounting

    I need a essay on environmental accounting and describing the concepts of it

    asked by gwen
  17. english

    ok Ineed help I don't know when to use paragraphs ???? help me before I die bescause we've lots of stories to write help help help help help

    asked by najla
  18. Socials Studies *URGENT*

    Research Territory, Food, Shelter, Transportation and Effect of European contact for Ojibwa, Assiniboin, Cree, Chipewyan, Inuit. Please help this is URGENT. I can't seem to find "Effects of European contact" for any of the groups. Although I don't quite

    asked by John
  19. Math

    Find stationary points: y=(3x-1)(x-2)^2

    asked by Anonymous
  20. English

    Can you please check if the following questions I need to prepare for tomorrow? Thank you very much in advance. Which of the first two questions is better expressed? 1) Briefly outline the features of the 18th-century novels. Focus then on Defoe’s novels

    asked by Franco
  21. Geology

    Im after info that will help me answer what the relevance of the age of the oceanic crusts and the continental crusts within the south american plate Are there presence of hotspots on the south american plate? what is the process that is responsible for

    asked by Alice
  22. chemistry

    it is desired to prepare 250.0mL of a standard solution having a concentration of 0.1000M AgNo3. How many grams of a sample of AgNO3 of 98.8% purity are required for this purpose?

    asked by T
  23. chemistry

    it is desired to prepare 250.0mL of a standard solution having a concentration of 0.1000M AgNo3. How many grams of a sample of AgNO3 of 98.8% purity are required for this purpose?

    asked by T
  24. college

    For a normal curve with mean 5 and standard deviation 6, which of the following parts of the normal curve will have an area of approximately 68%

    asked by Jewel
  25. chemistry

    How many grams of iron(III) nitrate.9H2O could be formed from the reaction of 3.676 g of iron with excess HNO3? Please can u explain? i try balance the question i couldnt.

    asked by ALi
  26. Australian history

    Can you rewrite for me in simple sentences for this passage. As this history suggests, there have been notable and passionate battles for citizenship , despite the oft-repeated conclusion that there is an emptiness at its heart.Women had to accept

    asked by Husy
  27. 5th grade

    Describe how proportions could be used to compare two products: If a 24-ounce can of pears sells for 1.90 and a 32 ounce can sells for $2.65, which one is the better buy?

    asked by Rae
  28. Math 116

    Find the slope =, if it exists, of the line containing the pair of points (7,10) and (9,-1)

    asked by KiKi
  29. math

    what is 11/3 round to nearest whole number? F)1 G)3 H)4 J)11 i got 3 2/3 so what would that be (G)

    asked by george
  30. Chemistry

    How many moles of air are there in flask with a volume of 125mL if the pressure is 745 mm Hg and the temperature is 22 celcius ?

    asked by Meg
  31. math

    Andrew worked from 9:45 am to 3:40 pm on Saturday.how long did he work on Saturday? A)5 hours 50 minutes B)5 hours 55 minutes C)6 hours 5 minutes D)6 hours 55 minutes i got 6 hours 35 minutes what did i do wrong

    asked by george
  32. Chemistry

    What is the density of carbon monoxide gas at 127 celcius and 763 mm Hg?

    asked by Meg
  33. algebra

    What is the domain and the range for the equation x^2 + y^2 + 4x + 6y - 12 = 0 ?

    asked by rold
  34. Math

    Place >,

    asked by Kirk
  35. Math

    plumber needs four sections of pipe 2 7 8 feet long. Can this be cut from a 12 foot section? If so, how much pipe will be left over? If not, why not?

    asked by Kirk
  36. math

    Finding the domain of G(X)=4/4-3X Unsure where to begin here

    asked by KiKi
  37. Math

    Paul read 20 pages of a book in 15 minutes. (a) What is Paul’s reading rate of pages per minute? (b) If he continues to read at the same rate, how many pages will he read in 1 hour?

    asked by Kirk
  38. Math

    Use the tagging and recapturing technique to estimate the number of fish in a pond. Suppose 140 fish were captured, tagged, and released. Then 50 fish were recaptured and among them 20 were found to be tagged. Estimate the number of fish in the lake.

    asked by Kirk
  39. physics

    A bath tub is filled with 100 liter of water at 25 degrees celcius. How long do you stir the water witha teaspoon for the temperature to be 100 celcius.

    asked by daphane
  40. Chem

    Question 11 Marks: 4 Consider the equilibrium of water with gaseous hydrogen and oxygen: Give the value of for this reaction, if it is written as: Choose one answer. a. -7.8 x 10^-16 b. -3.9 x 10^-16 c. 1.3 x 10^-15 d. 6.4 x 10^-14 e. 3.6 x 10^2

    asked by CAA
  41. physics help!

    The tires of a car make 63 revolutions as the car reduces its speed uniformly from 94.0 km/h to 58.0 km/h. The tires have a diameter of 0.88 m. What was the angular acceleration of each tire? And If the car continues to decelerate at this rate, how much

    asked by Anonymous
  42. physics help!

    A small 520-gram ball on the end of a thin, light rod is rotated in a horizontal circle of radius 1.5 m. Calculate the moment of inertia of the ball about the center of the circle. Then calculate the torque needed to keep the ball rotating at constant

    asked by Anonymous
  43. Chemistry

    How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?

    asked by Danny
  44. Chemistry

    What is the pH of a 0.200M solution for HBrO? Ka = 2.8 x 10^-9

    asked by Danny
  45. chemistry-please someone answer...i am clueless

    When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

    asked by josh
  46. English

    A married couple met at Juanita College in Huntingdon, Pennslvania. They are both left-handed,and they have set up a scholarship for needy left handed students attending Juanita. Here is my answer does it make sense? A married couple who met at Juniata

    asked by christopher
  47. math

    what is 11/3 round to nearest whole number? F)1 G)3 H)4 J)11 i got 3 2/3 so what would that be (G)

    asked by george
  48. English

    The Rochester Institute of Technology in New York State chose 150 students born on June 12 1979. Each one received a grant of $1,500 per year. These awards were given to select students to honor the school's 150th anniversary which was celebrated on June

    asked by christopher
  49. math

    could someone please help. given each set of data for ∆ABC: a) solve for b given ∠B=88 degrees,a=31.5m,c=25.6cm b) solve for a given ∠B=66 degrees,∠C=28 degrees,c=11.6cm i) state whether the sine law or cosine law is required to solve the unknown

    asked by deborah
  50. English

    After school, I go to a drama club. There are a lot of clubs in my school, like a sports club and an art club. (In the sentences, what is the use of 'a'? Is it for a generic use or does 'a' mean just 'one'?)

    asked by rfvv
  51. math

    A triangular lot sits at the corner of two streets that intersect at an angle of 63 degrees. One street side of the lot is 35m and the other is 47m. how long is the back of the lot, to the nearest metre?

    asked by deborah
  52. math

    133, 115, 120, and 111 passengers on four shuttle flights between Los Angeles and San Francisco during 1 day. What was the total number of passengers?

    asked by Anonymous
  53. pre-calculus

    How do i know if a conic section is a circle, ellipse, hyperbola, or parabola? based on it's equation such as 4x^2 - y^2 + 24x + 4y + 28 = 0

    asked by dcw
  54. Math

    On three consecutive passes a football team gains 7 yards, loses 34 yards and gains 24 yards. What number represents the total net yardage? For this would I just add 7+34+24 or is there a formula I should use?

    asked by KiKi
  55. COM/105

    How do prewriting activities like brainstorming and topic selection differ for individuals and teams?

    asked by Denise
  56. COM/105

    How should difficult issues like plagiarism be addressed—and why would these techniques be appropriate?

    asked by Denise
  57. math

    which of these statements about prime and composite numbers is true? F)all prime numbers are odd. G)all prime numbers have three factors. H)all composite numbers are divisible by two. J)all composite numbers have more then two factors i thinks it (J) but

    asked by george
  58. microeconomic 2

    given, STC=0.5^2 -10q -200 SMC=q-10 what is the short run average n marginal cost curve. i saw similar question posted by twitty...but i need to know how to get the answer...all the calculation..plz...

    asked by eta j
  59. social studies

    why wasn't the articles of confederation adopted for 5 years?

    asked by Mandy
  60. social studies

    The northwest ordinance provided for all of the following except: a. the eventual creation of three to five states out of the Northwest Terrirtory b. a prohibiton on slavery c. freedom of whorship d. discuss the future of the northwest territory

    asked by Mandy
  61. math

    which of these equations represents that 5 less then 10 a number is 15? A)10n - 5 = 15 B)5n - 10 = 15 C)(5-10)n = 15 D 5- (10 + n) = 15 i think its (C)

    asked by george
  62. social studies

    The orginal purpose of the 1787 convention in Philadelphia was to: a. discard Articles of confederation b. revise the articles c. draft a new consitution d. discuss the future of the northwest territory

    asked by Jodi
  63. social studies

    The Articles of confederation were nto adopter for fives because: (A) the antifederalists waged a stiff battle against them (B) disputes continued over western lands (C) the large states and the small states could not agree on representation (D) the

    asked by Mandy
  64. social studies

    the southern states supported the Virginia Plan because: (A) it created a system of national courts (B) the legislature wa s to be apportioned according to a state's population (C) the upper house was to be elected by the state legislature (D) a large

    asked by lila
  65. health

    What is sex???? And how are babies made???

    asked by Shayla
  66. Math

    John invested $2500, part at 8% and the rest at 12% per annum. The two parts earned equal amount of interest in one year. How much was invested at each rate?

    asked by Me
  67. Math 30

    A popular game show begins with the host reading a question to the contestants. One question involves putting 4 events (A, B, C, and D) in chronological order. What is the probability that the contestant gets the question correct is he or she just guesses?

    asked by Sandy
  68. Math101

    Describe in words the graph of each of these curves below. Include in your description the shape, along with other possible relevant information such as length, width, and center points. a. Y = 3X2 b. (X-1)2 + (Y-8)2 = 16 c. (X+2)2 + (Y-4)2 = 36 d. Y = X2

    asked by SEMAlaw
  69. accounting

    For each of the following items, give an example of a business transaction that has the described effect on the accounting equation: * Increase an asset and increase a liability. * Increase one asset and decrease another asset. * Decrease an asset and

    asked by Anonymous
  70. English

    Can you please help me point out the difference between "I was travelling by train and I was travelling on the train"? Thank you very much.

    asked by Franco
  71. Math 116 algebra

    Imagine you are in the market for a new home and are interested in a new housing community under construction in a different city. The sales representative informs you that there are 56 houses for sale two floor plans still available. Use x to represent

    asked by Karine
  72. Ethics

    Why is the discussion of the problem of evil important to augustine's ethic?

    asked by Christina
  73. Chemistry

    why are the orbitals of the hydrogen atom described as probability maps? Why are the edges of the hydrogen orbitals sometimes drawn to appear "fuzzy"?

    asked by student
  74. Ethics

    Describe Hobbes' account of man's action and how it fits into his ethical system.

    asked by Christina
  75. 11th grade

    verify the identity sin(4u)=2sin(2u)cos(2u)

    asked by stacey graham
  76. art

    Can some one help me with this art question. write a summary comparing and contrasting the characteristics of Roman and Greek architecture in 200 to 300 words.

    asked by jen
  77. Algebra

    A(x)+x^2+5x+6

    asked by Diane
  78. Social Science

    What is nigeria principles of free enterprise

    asked by Keeda
  79. economics

    If all the assumptions of perfect competition hold, why would firms in such an industry have little incentive to carry out technological change or much research and development? What condition would encourage research and development in competitive

    asked by canopolis
  80. Grammar

    I need this sentence to be separated into a gerund phrase "jumping out of airplanes sounds scary to me." Please help

    asked by student
  81. math

    A card is drawn at random from an ordinary deck of playing cards. Find the following odds. A. Odds in favor of drawing a 5,6,7 B. Odds against drawing a king, queen, jack, or ace D.Odds against drawing an even numbered (2,4,6,8,10)card. Can I get some help

    asked by grey
  82. math

    Stever was charged $60.00 interest for 1 month on a 3,000 credit card balance. What was the monthly interest rate.

    asked by willie
  83. calculus 1

    At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous
  84. math -word problem

    The width of a recangle is fixed at 13cm. What Length will make the perimeter greater than 78cm?

    asked by KiKi
  85. Calculus 1

    A street light is at the top of a 19 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 4 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 50 ft from the base of the pole?

    asked by Anonymous
  86. Calculus 1

    Water is leaking out of an inverted conical tank at a rate of 13200.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 14.0 meters and the diameter at the top is 3.5 meters. If the

    asked by Anonymous
  87. Calculus 1

    A particle is moving along the curve y= 4 \sqrt{3 x + 1}. As the particle passes through the point (1, 8), its x-coordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

    asked by Anonymous
  88. grammar

    How do I know what the simple subject of the sentence is and the complete subject?

    asked by Marcus
  89. Pre-Cal(Please help)

    Find (a) f X g , (b) g X f, and (c) f X f f(x) = 3sqrt x-1 g(x) = x^3 + 1 For the f(x) the 3 is little above the sqrt sign. my answers were: (a) = 3sqrt x^4 -1 (b) = x^4 -1 (c) = 6sqrt x+1 These answers are wrong but I do not know how to do this.

    asked by Hannah
  90. American Literature

    Is there a poemtalking about freedom during the wesrward movement?

    asked by amadou
  91. physics

    A car drives around a curve with radius 410 m at a speed of 39 m/s. The road is banked at 4.6°. The mass of the car is 1600 kg. (a) What is the frictional force on the car? (b) At what speed could you drive around this curve so that the force of friction

    asked by Anonymous
  92. Math

    A set of scores with a normal distribution has a mean of 32 and a standard deviation of 3.7. Which score could be expected to occur the least often?

    asked by Lauren
  93. math

    you need 4/5 cups of water for a recipe. You accidently put 1/3 cups into the mixing bowl with the dry ingredients. How much more water in cups do you need to add?

    asked by anonymous
  94. To Ms. Sue

    Ms. Sue you know the English paragraph I was working on right, well I got some feedback on it from two of my friends and this is what they said. the 1st one said: Positive Things She liked my 2nd sentence, and she liked the way I used rapidly. Negative

    asked by Sara
  95. Pre-Cal(Please help)

    Find two functions f and g such that (f X g)(x) = h(x). (There are many correct answers.) h(x) = 4 / (5x + 2)^2 = My answers were: f(x) = 4 / 5x, and g(x) = 5x + 2 Please explain. These answers were wrong and I do not know how to fix them!!

    asked by Hannah
  96. 3rd grade

    how do you do average

    asked by alexa
  97. 10th grade

    a{n}=n(3n+5)

    asked by Anonymous
  98. Math - Implict differentiation

    How do I find the value of d^2y/dx^2 for the function defined implicitly by xy^2 + y = 2 at the point (1,-2)?

    asked by Ren
  99. Economic

    Please I would to know if I choose the correct answer. Which of the following characteristics does perfect competition share with monopolistic competition? a)Price-taking firms b)Zero long-run economic profit c)homogeneous product d)some barriers to entry

    asked by Jeniffer
  100. math

    The function H descibed by H(X)=2.75X+71.48 can be used to predict the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long. Predict the height of a woman whose humerus is 39 cm long. I have an answer of

    asked by KiKi
  101. science

    The molecule Al2(SO4)3 has dissolved in water. What ions are formed and how many ions are formed of each type?

    asked by Taylor
  102. physics help please!!!

    What is the angular momentum of a 2.5 kg uniform cylindrical grinding wheel of radius 19 cm when rotating at 1200 rpm? And how much torque is required to stop it in 5.7 s? Need help with step-by-step explanation.

    asked by Anonymous
  103. arithmetic

    2.75+.003+.158=

    asked by Anonymous
  104. Science

    What are 2 things that electrical energy can transform into?

    asked by Saiyda
  105. To Ms. Sue

    Ms. Sue can you Please edit this; I'll accept any other changes made by you, thanks. Can you please edit this in paragraph mode; it's easier for me to pick out the mistakes I've made that way. Thank You:-) I feel the pain of pins and needles. I open my

    asked by Sara
  106. adult education

    how much potential energy does a 4500kg piano is suspended by a rope 30 meters above the ground

    asked by Melonie
  107. English(college)

    Can you please help me? The direction goes as follows; Edit the following sentences to correct errors in pronoun reference. In some cases you will need decide on an antecedent that the pronoun might logically refer to. 1) Our German conservation group is

    asked by tash
  108. Math 116 algebra

    There are 38 houses in a new community available with two floor plans. Floor plan x sells for $175,000 and Floor plan y sells for $200,000. The total worth of all available homes are $7,200,000. Write an equation that illustrates this situation. Part A:

    asked by Karine
  109. Physics

    Interference effects are produced at point P on a screen as a result of direct rays from a 485 nm source and reflected rays off the mirror. If the source is 94 m to the left of the screen, and 1.02 cm above the mirror, calculate the distance y to the first

    asked by Sarah
  110. English

    1. I like an apple. (one) 2. I like pears. (generic use) 3. I like a drama club. (generic use) 4. I go to a sports club. (one) 5. A dog is a faithful animal. (generic use[front]/ one [back]) 6. I like going to a soccer club.(one) 7. We have a baseball club

    asked by rfvv
  111. math

    Hi I am looking for a certain number line for a test you guys should have a place in search so we all can show you if you have it then this web site will be poppen well that's all see is it take note place commet here

    asked by Anonymous
  112. education

    Cooperative activities enhance which intelligence? A.logical\mathematical b.verbal\linguistic c.intrapersonal d.interpersoal

    asked by vanessa
  113. math

    Hi I am looking for a certain number line for a test you guys should have a place in search so we all can show you if you have it then this web site will be poppen well i had a math qestion to it goes like this i had 55 apples and i got 100 more then i

    asked by Anonymous
  114. social studies

    comapare and contrast the Irouquios confederacy and the colonial government.

    asked by lauren
  115. science

    a 45 N force acts upon a 8 kg block. what is the blocks acceleration?

    asked by rebecca
  116. language arts

    in revenge of the whale what is thomas nickerson's fate?

    asked by me
  117. social studies

    how is the iroquois confederacy diff. from the colonial government?

    asked by lauren
  118. physics

    A spring with spring constant k = 810 N/m is placed in a vertical orientation with its lower end supported by a horizontal surface. The upper end is depressed 25 cm, and a block with a weight of 29 N is placed (unattached) on the depressed spring. The

    asked by Lynn
  119. physics

    A box weighs 50 N, placed on a titled board (30). What force must be applied to pull the box up the board at constant velocity(u=0.35)

    asked by Rachel
  120. essay

    I'm writing about teachers giving students too much homework my supporting topics: needs more time outside activities interfering with our lives how can i make them parallel in a sentence? please help and thank you

    asked by larry
  121. 4th grade

    what is 96/4

    asked by angel
  122. To Ms. Sue

    Ms. Sue could you please have a moment to look at my other previous post, thanks very much:-)

    asked by Sara
  123. 5th grade

    A shirt has 80 stripes. 40 of them are black. Which decimal represents the black stripes?

    asked by cristy
  124. Chemistry

    What is the importance of a freezing point depression graph and why and what things change when different solutes and solvents are added?

    asked by Kathleen
  125. to Ms Sue

    Can you please help me? The direction goes as follows; Edit the following sentences to correct errors in pronoun reference. In some cases you will need decide on an antecedent that the pronoun might logically refer to. 1) Our German conservation group is

    asked by tash
  126. Math

    What is 563 divided by 4 show you work

    asked by James
  127. Math

    How do I combine the product rule and the chain rule in the simplest way possible?

    asked by Anonymous
  128. Pre-Cal

    Find (a) f X g , (b) g X f, and (c) f X f f(x) = 3sqrt x-1 g(x) = x^3 + 1 For the f(x) the 3 is little above the sqrt sign. my answers were: (a) = 3sqrt x^4 -1 (b) = x^4 -1 (c) = 6sqrt x+1 These answers are wrong but I do not know how to do this

    asked by Hannah
  129. Math

    What is 1/2 of 7/8'S? THANKS MASON

    asked by Mason
  130. Math

    what is 5/6 of 3?

    asked by Mike
  131. religion

    what part does religion play in your day to day activities? what part does religion play in making important moral ? waht types of prayer do you use most often? Do you consider jesus a personal friend who makes a difference in your life? Do you think it is

    asked by sandha
  132. algebra

    (x-3)(x+7)=(x+5)(x+1)

    asked by Anonymous
  133. essay

    i'm writing a persuasive essay about teachers giving students too much homework. i need 2 more supporting topics 1. interfering with activities 2. 3. please help and thank you

    asked by larry
  134. Precalculus(NEED HELP ASAP PLEASE!!)

    Solve: sin(theta)cos(theta)-sin(theta)−cos(theta)+1 = 0, 0 < or equal to theta < 2pi Solution Set: ____________ ?

    asked by jh
  135. Precalculus(NEED HELP ASAP PLEASE!!)

    Solve: sin(theta)+cos(theta) = 1 0 < or equal to theta < 2pi Solution Set:__________ ?

    asked by jh
  136. chemistry

    An alpha particle (mass = 6.6 × 10-24 g) emitted by radium travels at 3.4 × 107± 0.1 × 107 mi/h. What is its de Broglie wavelength (in meters)?

    asked by brittany
  137. Science

    Knowing about covection currents, how do heaters warm the whole house?

    asked by Julia
  138. Probability (Pre-Calculus)

    A class is given a list of eight study problems from which five will be part of an upcoming exam. If a given student knows how to solve six of these problems, find the probability that the student will be able to answer: (a) all five questions on the exam.

    asked by Hailey
  139. Science

    If the sun is in the center of the constellation Sagittarius on January 10, what time does it rise and set?

    asked by Mary
  140. Chemistry

    An amino acid has the form shown at R-CH-C-O^- (with a NH2 bonded to the CH and a O double bonded to the C) (O^- means the C has a negative charge) a) a pH of 7.0 b) any pH other than 7.0 c) a pH greater than its isoelectric point d) its isoelectric point

    asked by Holly
  141. English

    what are some things that you wouldn't want to hear during a surgery? -Oops! -Don't tell him/her! -Are you still alive? -Oh No! -Where did my gum go? Any other suggestions?

    asked by Sara
  142. Science-PsyDAG

    PsyDAG, could you please check my post on that science experiment thing, if you have time. I posted it yesterday on here, but you were never on. Thanks:-)

    asked by Sara
  143. spanish

    Complete with the appropriate word: 1. Cuando empieza el segundo ______, los jugadores vuelven al campo. 2. Juegan futbol en el ______ de futbol. 3. El jugador ________ un tanto cuando ___________ un gol.

    asked by Ashley
  144. Chemistry

    An amino acid will have the form shown at: R-CH-C-OH (with an O double bonded to the C and a NH3+ bonded to the CH) a) a pH of 7.0 b) any pH other than 7.0 c) a pH greater than its isoelectric point d) its isoelectric point e) a pH less than its

    asked by Holly
  145. Pre-Cal

    Find two functions f and g such that (f X g)(x) = h(x). (There are many correct answers.) h(x) = 4 / (5x + 2)^2 = My answers were: f(x) = 4 / 5x, and g(x) = 5x + 2 Please explain. These answers were wrong and I do not know how to fix them!!

    asked by Hannah
  146. COM 220

    What type of writitn style does the author use in the article A Nation Apart?

    asked by Renee
  147. finance 200

    · Complete the following problems (Do Not repeat the questions): 1. The Monley Corporation of New Jersey has gross profits of $980,000 and $260,000 in depreciation expense. The Majors Corporation of Nebraska also has $980,000 in gross profit, with $60,000

    asked by cari
  148. Chemistry

    will 1 molar NH3 and 1 molar NH4Cl form a buffered solution?

    asked by Anonymous
  149. It

    what is data management technology

    asked by mike
  150. chemistry

    what is the conjugate base of H2SO3??

    asked by Anonymous
  151. algebra

    how do i simplify the following: 2x^2 +13x +15 over 4x+6 . I simplified 4x+6 to 2(2+3), but I can't remember how to simplify the top part. Please help

    asked by Anonymous
  152. Chemistry

    3.5 liters of H2O are added to 500 mL of a 2.0 M HNO3 solution. What is the resulting molarity?

    asked by Riley
  153. Microbiology

    Which of the following tests are used to differentiate between these bacteria: Tests: Bacitracin Test, SXT Test, CAMP Test, Enterococcosel Agar, 6.5% NaCl Test and Optochin Test A) Streptococcus viridans and Streptococcus faecalis B) Group A and Group B

    asked by Jade
  154. chemistry

    what two metals that will not generate hydrogen gas when treated with an acid?

    asked by nicole
  155. 4th grade

    to subtract two decimals, line them up using the ?

    asked by julia
  156. high school economics - elasticity

    What can you conclude about elasticity of demand for rail service: Rail service has always been a losing proposition in Canada. Regardless of how much we raise our prices, we will never earn enough revenue to earn a profit. This is confusing because I

    asked by amy
  157. College Chemistry

    Given the following equilibrium constants, Ka (NH4^+)=5.6*10^-10 Kb (NO2^-)=2.2*10^-11 Kw=1.00*10^-14 determine the equilibrium constant for the reaction below at 25*C. NH4^+(aq)+NO2^-(aq)f HNO2(aq)+NH3(aq)

    asked by Katie
  158. math

    The measure of a supplemental angle is 25 degrees more than 7 times the measure angle. What is the measure of the angle?

    asked by Emme
  159. Economic

    1. Keogh and IRA plans allow people to do all of the following except A.save money each year for retirement. B.withdraw money from their accounts at the end of every year without penalty. C.establish their own pension plans. D.defer taxation of the

    asked by candance
  160. 11th grade

    bar graph of automobile sales throughout the 1950's.

    asked by chad
  161. Economic

    Relative to a stock, a bond provides a a.higher dividend. b.lower dividend. c.higher level of risk. d.lower level of risk. Its D right?

    asked by candance
  162. Economic

    Savings bonds sell for less than their face value because a.banks compete to sell them. b.this is how they pay interest. c.they pay dividends twice a year. d.interest is tax-exempt. Its D right?

    asked by candance
  163. Social Studies

    What was a long-term result of the nationalist movements that took place in Asia between World War I and World War II?

    asked by Sarah
  164. science

    The chemical formula for glucose is C6H12O6. Six molecules of carbon dioxide (CO2) react with six molecules of water (H2O) to form six molecules of oxygen (O2). How many molecules of glucose will be produced? A 1 B 6 C 12 D 36 can anyone help me figure

    asked by Sabrina
  165. Math

    in a subdivison, 67% of the homes have detatched garages, 32% have a patio & 13% have both. What is the probability that a house has a patio if u know that it has a detached garage?

    asked by madison
  166. college

    Four hundred people apply for three jobs. 130 of the applicants are women. (a) If three persons are selected at random, what is the probability that all are women? (b) If three persons are selected at random, what is the probability that two are women?

    asked by kay
  167. space

    uummm i want to know how can telescope cxan see so far????

    asked by Jane
  168. chemistry

    Many cigarette lighters contain liquid butane, C4H10(l). Using standard enthalpies of formation, calculate the quantity of heat produced when 2.7 g of butane is completely combusted in air under standard conditions.

    asked by hello
  169. physics

    A 5.00-kg object placed on a frictionless, horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging 9.00-kg object. Draw free-body diagrams of both objects. Find the acceleration of the two objects and the

    asked by Brandon
  170. more physics

    a 1.00-kg object is observed to accelerate at 10.0m/s∧2 in a direction 30.0 north of east. the force F2 acting on the object has magnitude 5.00 N and is directed north. determine the magnitude and direction of the force F1 acting on the object.

    asked by Brandon
  171. Chemistry

    The following reaction represents the decomposition for water: 2H2O - 2H + O How many molecules of hydrogen are produced from the decomposition of 12.2 grams of water into its elements?

    asked by Stacey
  172. Pre-Cal

    Determine the domains of (a)f and (b) f X g f(x) = 1/x g(x)= x + 3 For the domain of f I had x > 0 and for f X g I had all real numbers but this was wrong.

    asked by Hannah
  173. 6th grade

    what is the LCM of 8,and 19

    asked by dj
  174. Math

    Bob and his dad visited the hardware store on Saturday. They observed the following transactions: Mr. Harris bought 4 for $0.50, Mrs. Clarke bought 21 for $1.00, Mr. Montaro bought 1,134 for $2.00, and Ms. Park bought 450 for $1.50. What were they buying?

    asked by Daniel
  175. Chemistry

    Can you determine the mass of carbon monxide that is produced when 45.6 grams of methane reacts with 73.2 grams of oxygen gas. Can you please show work in detail please. Thanks

    asked by Stacey
  176. geometry

    The legs of an isosceles triangle are each 18 cm long and the angle between them measures 48 degrees. What is the length of the third side?

    asked by cori
  177. Bio

    Describe the process that occurs within the digestive system when you eat and apple.

    asked by Tori
  178. Pre-Cal(Please help)

    Determine the domains of (a)f and (b) f X g f(x) = 1/x g(x)= x + 3 For the domain of f I had x > 0 and for f X g I had all real numbers but this was wrong.

    asked by Hannah
  179. Math

    factor the trinomial 12wsquared+8w-15

    asked by Ismael
  180. Pre-Cal

    what about the domain of 1/x. Would it be 0?

    asked by Hannah
  181. Chemistry

    Nickel was reacted with an aqueous solutionn containing 400grams of copper(II)perchlorate. The reaction was stopped after 1 hour and 89.0 g of copper metal was obtained. Calculated the percent yeild?

    asked by Canzadia
  182. Business

    What is a joint stock company or a scenario that explains one?

    asked by Lori
  183. Chemistry

    Calculate the [h3o+] of the following polyprotic acid solution: 0.135 M H2CO3

    asked by Krysten
  184. 5th grade

    how do I do the preposition phrases and object?

    asked by patricia
  185. Math157

    A parent’s chance of passing a rare inherited disease on to a child is 0.15. What is the probability that, in a family of three children, none of the children inherits the disease from the parent?

    asked by purple
  186. 4th grade math

    R^2 + R^2 + 16R + 64 = 144 solve for R.

    asked by Dan
  187. Chemistry

    determine the mass of carbon monxide that is produced when 45.6 grams of methane reacts with 73.2 grams of oxygen gas. Can you please show work in detail please. Thanks

    asked by Stacey
  188. algebra

    Sandy’s Sweatshirt Shop sells college sweatshirts. White sweatshirts sell for $18.95 each and red ones sell for $19.50 each. If receipts for the sale of 30 sweatshirts total $572.90, how many of each color did the shop sell?

    asked by Socorro
  189. Chemistry

    Whatis the pH of a buffer that results when 0.05mol of Na3PO4 is mixed with 0.75 mol of HCl and diluted with water to 1.00L. (The acid dissociation constants for phospohoric acid are Ka1=7.5*10^-3, Ka2=6.2*10^-8 and Ka3=3.6*10^-13).

    asked by Katelynn
  190. Pre-Cal

    Give the domain of the function and identify any vertical or horizontal asymptotes. h(x) = 1 / x - 3 + 1 I had x = 0 and y = 3. Would the domain be all numbers except 1?

    asked by Hannah
  191. Geometry-properties of tangents of a circle

    Circle L has segment LJ and segment LK as radii. Those 2 segments are perpendicular. Segment KM and segment JM are tangent to circle L. Is triangle JLM congruent to triangle KLM? Please explain.

    asked by Kat
  192. 5th grade

    sandys classroom has tables that are shaped like trapezoids. three tables are placed together in a u-shape.One student can sit at the short base of the trapezoid or at the end of the table.two students can sit at the long base of the trapezoid. how many

    asked by tyonna
  193. physics

    A bowling ball of mass 7.3 kg and radius 9.6 cm rolls without slipping down a lane at 3.4 m/s. Calculate its total kinetic energy. I tried this problem with the equation 3/4mv^2 but I did not get the correct answer, could I please get help with

    asked by Anonymous
  194. Chem

    A buffer contains 1.0mol CH3CO2H and 1.0mol CH3CO2^- diluted with water to 1.0L. How many moles of NaOH are required to increase the pH of the buffer to 5.10? (pKa oof Ch3CO2H=4.74)

    asked by Sean
  195. health care

    how do participation contracts represent financial opportunities for providers?

    asked by Kay
  196. math

    Explain how to evaluate x-8 when x=10?

    asked by Kevin
  197. English

    What are some literary devices (simile, metaphor, flashback, etc.) that are used in the song, "A whole new world" from Aladdin?

    asked by Rainie
  198. calculus 1

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 19 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by mona
  199. calculus 1

    At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 21 knots and ship B is sailing north at 18 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by mona
  200. 10th grade

    what is the conjugated base of H2SO3

    asked by Eric
  201. chemistry

    what is conjugated base of NH4+

    asked by Eric
  202. Chemistry

    Combustion analysis of 0.343 g of a compound containing C, H, and O produces 0.753 g of CO2 and 0.411 g of H2O. Mass spectral analysis shows that the compound has a molar mass around 120 g mol-1. What is the compound's: Empirical Formula:----- Molecular

    asked by Abraham