Most popular questions and responses by Amy~
  1. Chemistry

    A mixture of methane (CH4) and ethane (C2H6) of mass 13.43g is completely burned in oxygen. If the total mass of CO2 and H2O produced is 64.84 g, calculate the fraction of CH4 in the mixture. CH4 + C2H6 arrow CO2 + H2O 13.43g 64.84g Would I do

    asked on August 27, 2010
  2. US History

    what is the difference between 1) municipal reformers (are municipal reformers socialists or Progressives?) 2) socialists 3) Progressives Aren't Progressives and socialists the same?They both want government invovlment. Also what is the difference between

    asked on May 31, 2010
  3. Chemistry

    What would be the steps to solving this problem? The aluminum sulfate hydrate [Al2(SO4)3 (times) xH2O] contains 8.20 % Al by mass. Calculate x, that is , the number of water molecules associated with each Al2(SO4)3 unit.

    asked on August 26, 2010
  4. Chemistry

    How many liters of gasesous methane (CH4) must be burned in oxygen to produce enough H2O and CO2 to fill a 3.0 L balloon? Assume that H2O and CO2 are the only combustion products and that the temperature and pressure remain constant. How would I solve

    asked on August 29, 2010
  5. Chemistry

    Lysine, an essential amino acid in the human body, contains C,H,O, and N. In one experiment, the complete combustion of 2.175g of lysine gave 3.94g CO2 and 1.89g H2O. In a separate experiment, 1.873 g of lysine gave 0.436 g NH3. (a) Calculate the empirical

    asked on August 27, 2010
  6. Chemistry

    The steps to getting the answer. A certain metal oxide has the formula MO where M denotes the metal. A 39.46g sample of the compound is strongly heated in an atmosphere of hydrogen to remove oxygen as water molecules. At the end, 31.70g of the metal is

    asked on August 26, 2010
  7. Chemistry

    The mass % of H in methane (CH4) is ? How would i solve this?

    asked on August 30, 2010
  8. Chemistry Balancing

    K3PO4(aq) + 3Sr(NO3)2 ==> Sr3(PO4)2 + K2(NO3) the reactant was given. I can't seem to balance this. whenever everything is even either the 3Sr(NO3)2 or K2(NO3) is not balanced. Also, the 3Sr in 3Sr(NO3)2 was already there.

    asked on September 8, 2010
  9. Math Word Problem

    Cashews sell for $4.00 per pound and peanuts for $1.50 per pound. The peanuts didn't sell well, so in order to sell 60 lbs of peanuts the manager decided to mix 60 lbs of peanuts w/ cashews and sell the mixture for $2.50 per pound. How many lbs cashews

    asked on September 12, 2010
  10. Math

    A real estate agent to sell a large apartment complex according to the following commission schedule: $45,000 plus 25% of the selling price in excess of $900,000. Assuming that the complex will sell at some price between $900,000 and $1,100,000, inclusive,

    asked on September 21, 2010
  11. English: Quotes

    What if there's a quote inside a quote would I use this " ...'...'" and also what if I wanted to add something in my own words in between the quote would I end the quote then write my thought and then start a new quote OR would I use [...] in between the

    asked on September 20, 2010
  12. chemistry

    For the equation: NH4NO3 ==> N2O + 2H2O how would I find how many grams of N2O are formed if 0.46mol NH4NO3? Would I start out with 0.46mol NH4NO3 * ( / )

    asked on August 29, 2010
  13. Math Word Problem

    2) After 2 years, Betsy finds she now will require $7,000 per year. The remaining info is the same. How should the money be reinvested? Same info: 1) Betsy requires $6000 per year in extra income. She has $50,000 to invest and can invest in bonds paying

    asked on September 12, 2010
  14. US History II

    For Alexander Hamilton v. Thomas Jefferson was the conflict about the Presidency, and Hamilton's and Jefferson's plans? Like Loose v. Strict Constitution?

    asked on August 6, 2010
  15. Math

    The final exam will count as two tests. Brooke has test scores of 80, 83, 71,61 and 95. What score does Brooke need on the final in order to have an 80? I thought 80+83+71+61+95 = 390 / 5 = 78 then I don't know what to do next. Although I did do 78 +2x =

    asked on September 19, 2010
  16. Chemistry

    Record the amount of heat needed to change phases for water-ice to steam using graphical analysis. Is there a one accurate amount of heat needed to change phases, I thought it varied depending the problem... Would the question be asking for the heat needed

    asked on June 10, 2010
  17. US History: Ms. Sue

    "The Interstate Commerce Act of 1887, establishing the Interstate Commerce Commission (ICC) had been an early effort to regulate the industry; but over the years, the courts had sharply limited its influence." - wiki Would the Interstate Commerce Act be

    asked on August 19, 2010
  18. Geometry

    How would I find the missing side of an obtuse triangle? Using the pythagorean theorem ?

    asked on September 5, 2010
  19. Chemistry Check

    Which one of the following substances is the product of this combination reaction? Al(s) + I2(s) => ______ For this it would be AlI3 ?

    asked on August 30, 2010
  20. English

    In the Minister's Black Veil by Nathaniel Hawthrone. What reasons does Hooper give for not wanting to remove his veil? I came up with one reason: that there is a Black Veil on everyone But what will the other reasons be? "Why do you tremble at me alone?"

    asked on October 3, 2010
  21. Debug=true

    The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL: 1. Add a "Debug=true" directive at the top of the file that generated the

    asked on January 13, 2011
  22. US History

    In the Watergate Scandal, I know that 5 men broke into the Democratic National Committee headquarters and Nixon did not want to give up the tapes that revealed that he wanted to cover up the break in... why? 1) Did Nixon put up the tape recording system in

    asked on August 7, 2010
  23. Math

    I tried to solve this but can't seem to find a procedure to solve this: To measure the height of Lincoln's caricature on Mt. Rushmore, two sightings 800 feet from the base of the mountain are of Lincoln's face is 32 degrees and the angle of elevation to

    asked on May 17, 2011
  24. Math

    triangle PQR is translated 3 units ot the right and reflected over the line y=-1. The result is triangle P'Q'R'. Which is NOT true? 1) PQ = P'Q' 2)PQ/RQ = P'Q'/R'Q' 3)PQ + QR greater than or equal to R'P' 4)m angle P + m angle Q is greater than or equal to

    asked on September 5, 2010
  25. Chemistry

    The average mass of a solid copper penny is 2.63 g . What is the mass of one mole of pennies? How would I solve this?

    asked on August 29, 2010
  26. US History

    "The Interstate Commerce Act of 1887, establishing the Interstate Commerce Commission (ICC) had been an early effort to regulate the industry; but over the years, the courts had sharply limited its influence." - wiki Would the Interstate Commerce Act of

    asked on August 20, 2010
  27. Algebra Check

    Solve the system 4x - 7y = 5 14y = 8x + 10 I got y = 10/-13 x = -5/52 but it doesn't seem right

    asked on August 31, 2010
  28. Chemistry

    Why is C2H4 not an alkane?

    asked on August 29, 2010
  29. US History Help!

    For the quote "remember the Maine" who said this? Was it the Americans? I can't find what the significance of the quote was in illumating a theme in history?

    asked on August 28, 2010
  30. Chemistry Help!

    The reaction is O3 + NO arrow O2 + NO2 If 0.740 g O3 reacts w/ 0.670g of NO, how many grams of NO2 will be produced? I've tried to solve this. but I can't seem to get the right answer

    asked on August 26, 2010
  31. history WWI

    I don't understand this question: US ships were kept out of North Sea (which had mines) put by Britian. Was Wilson being inconsistent? I don't understand, Is the question asking if Wilson was inconsistent about keeping US ships out of North Sea or

    asked on September 2, 2010
  32. Algebra (Last Question)

    I have - to graph each relation - decide if it is a function - state the domain and the range. 1) {(2,3),(4,-3),(5,1),(-1,3)} how would I decide if something is a function in general? I kind of remember the domain and the range,but since I did this 2 years

    asked on August 31, 2010
  33. US History I

    What are the main events leading to the Spanish-American War? What are the result of the Spanish-American war? Could someone post a bulleted list and a website? When did this happen, year? Thanks

    asked on May 31, 2010
  34. Math

    This is another application that I didn't understand A blimp, suspended in the air at a height of 500 ft, lies directly over a line from Soldier Field to the Planetarium on Lake Michigan. If the angle of depression from the blimp to the stadium is 32

    asked on May 17, 2011
  35. SAT

    For the SAT online course, when I was going o buy it, they asked for shipping information, so I'm confused... are they going to send me a book on the online course where afterwards I can use the online course...?

    asked on May 8, 2011
  36. Math Word Problem

    a new blend of coffee will cost $3.90 per pound by mixing 2 coffees that sell for $2.75 and $5 per pound. what amounts of each coffee should be blended to obtain the desired mixture? (the total weight of the desired blend is 100 lbs) How would I solve

    asked on September 12, 2010
  37. Math: Word Problem

    A ball is thrown upward from the top of a building which is 96ft tall w/ Initial velocity of 80 ft per sec. Distance s(ft) of ball from the ground after t sec is s=96+80t-16t^(2) 1) how many sec. will the ball pass the top of the building when it is coming

    asked on September 7, 2010
  38. history WWI

    the question asks me to explain why British blockade did or did not make Germany to continue submarine warfare. I thought it was "did" because it made Germany want to continue the warfare ? not sure

    asked on September 2, 2010
  39. Math Check

    the additive inverse of -2? 2 the multiplicative identity of -2? -2 write this in 4 different ways. How would I write it 4 different ways? Multiplicative inverse of x+2? Additive inverse of x^2 - 4x - 10

    asked on August 31, 2010
  40. Chemistry

    If 17.0 g of sodium chloride are dissolved in water to make 0.5 L of solution, then what is the final concentration of the solution? Answer 0.6 mol L I don't get this. I know that 1 mol / 22.4 L

    asked on August 29, 2010
  41. Chemistry

    HSO4 + HCO3 -> SO4 + H2CO3 How would I know which are Bronsted-Lowry acids?

    asked on August 29, 2010
  42. Math

    At 10 am on April 26, 1998, a building 300 feet high casts a shadow 50 feet long. What is the angle of elevation of the Sun

    asked on May 15, 2011
  43. Math

    % of Paupers Native: 51.6 Foreign: 39.3 % of Population Native: 74.5 Foreign: 13.4 How much higher was the proportion of paupers in the foreign? How to get the answer?

    asked on September 22, 2010
  44. History

    Could someone explain what social, economic, and political issues are? Social- would be among the people? Economic- Political- issues that have to do w/ gov?

    asked on September 20, 2010
  45. Algebra

    (8w+5)/(10w-7) = (4w-3)/(5w+7) How would I solve this?

    asked on September 7, 2010
  46. Chemistry

    There was this problem on a test that I took recently. But, I never learned how to solve this. The problem was: it gave the mass of a certain compound and stated that it had 92% carbon. then it asked for the theortical yield of Carbon.

    asked on September 5, 2010
  47. Math

    there is $175,000 to award. If the money is awarded to 4 students in a ratio of 1 to 2 to 3 to 4, how much will the largest award be? How would I solve this ?

    asked on September 5, 2010
  48. Algebra

    I have to find the equation for the line that passes through (4,3) and (6,2) How would I solve this. Into point slope form Into slope intercept form I got the slope each is -1/2 then I got y=-1/2x + b How would I get b?

    asked on August 31, 2010
  49. Chemistry

    In water conservation, chemists spread a thin film of certain inert material over the surface of water to cut down the rate of evaporation of water in reservoirs. Franklin found that 0.10 mL of oil could spread over the surface of water of about 49 m

    asked on August 24, 2010
  50. Chemistry

    I don't understand this: For the temperature vs time graph for heat and changes of state. The graph starts at -2.1 degrees C The heat of fusion is at 2.0 degrees C The heat of vaporization is on 101.0 degrees C. The graph ends at 103.0 degrees C. So to get

    asked on June 10, 2010
  51. Question

    There's this object I don't know what its called: It is made out of metal the metal is shaped into a circle (empty in the middle) with another metal pieced into a triangle (empty in the middle) that is attached to the circle with these two loops with

    asked on May 29, 2010
  52. English

    What might be the tone of voice of someone who is afarid of society and stays home? This person is kind and caring.

    asked on May 29, 2010
  53. Math

    tan 46.27 = x / (y+100) could someone change this to y = ? I tried it but got stuck after the first step of moving y+100 over to tan... steps too please

    asked on May 15, 2011
  54. Math Graphing

    x^3 < 3x^2 would become x(x^2-3x) then how would I graph this?

    asked on September 26, 2010
  55. Math: Inequalities

    How would I solve this inequality and graph? (x+2)((x^(2)-x+1)) > 0 I got x > -2 and x^(2)-x+1 > 0 How would I graph x^(2)-x+1 > 0 because I can't factor it.

    asked on September 21, 2010
  56. Chemistry: Compound

    1) ZnSO4 would it be Zn(SO4) does the polyatomic ion always have to have ( ) ? 2) Is Ba(SO4) right? since Ba is 2+ and SO4 is 2- right? 3) In a net ionic equation for BaCI2 would it become Ba ^(2+) + 2CI or Ba ^(2+) + CI2 ?

    asked on September 8, 2010
  57. Math Geometry

    there are 2 pentagons the small pentagon has a side that is 3cm while the side on the other larger pentagon is 8cm. the small pentagon has a side x cm while the same side on the larger pentagon is 5cm. would i set up a proportion 3/x = 8/5

    asked on September 5, 2010
  58. History WWI

    the question is : would a "visit and search" policy be possible for the Germans? (this is about the unrestricited submarine warfare) I thought yes but then ... I don't know Another source said that it was not possible

    asked on September 2, 2010
  59. Algebra ?

    How would I solve this: ((x^(3)-x^(2)-4x+8))/(x-1)

    asked on August 31, 2010
  60. Math: graphing check

    for this x < 3 would I put a dot on 3 (on the y-axis) and it would be a dotted line just through 3 vertical. and which side would be shaded the right side where the x-axis is negatives.

    asked on August 31, 2010
  61. Chemistry Last

    Last question: An average person expends ~100 kj to walk 1km. How far will the average car travel by the time it expends the same amount of energy (i.e. 100 kJ) as a person who walked 1 km? Fuel consumption of average car= 8 km L^(-1) Heat of combustion of

    asked on August 29, 2010
  62. Chemistry

    Which of the gases most closely resembles an ideal gas at standard temperature and pressure? 1) CO2 2) NH3 3) HI 4) H2 5) H2O why would it be H2

    asked on August 29, 2010
  63. history.

    another question for "government is not the solution to our problem, Government is the problem" would the significance of this quote in illuminating a theme in US history be: that people shouldn't rely on the government? Sorry, I might have two more

    asked on August 28, 2010
  64. Chemistry

    How would I solve this: The atomic mass of 6/3Li and 7/3Li are 6.0151 amu and 7.0160 amu, respectively. Calculate the natural abundances of these 2 isotopes. The average atomic mass of Li is 6.941. All I know is how to get the atomic mass and not the

    asked on August 25, 2010
  65. US History

    For this quote " We hold these truths to be self-evident: that all men are created equal." 1) When? July 4, 1776 or just 1776 2) In what context was it used? Declaration of Independence 3) Was this quote aimed at King George III OR Britain. 4) What would

    asked on August 21, 2010
  66. US History: Ms. Sue

    For Booker T. Washington v W. E. B. DuBois, I don't get DuBois' method... did he want African Americans to gain rights right away?

    asked on August 18, 2010
  67. US History II

    Which one would be right...I don't really understand This is the question: What was the signifianceof the War Powers Resolution of 1973? 1) gives the Executive Branch the power to wage wars instead of leaving that power to Congress to declare it.

    asked on July 11, 2010
  68. Chemistry

    I don't get how the intermolecular forces (Hydrogen bonding) relates to the heating curve of water. I read some stuff on intermolecular force for Hydrogen bonding and it said that the force between water molecules raise the boiling point of water. So would

    asked on June 10, 2010
  69. Newspaper

    Can a bunch of Advertisements be on one page of a newspaper? What kind of advertisements were there in 1935? Also can an advertisements have a title: Used Cars then a picture of a car then price and call: .

    asked on June 9, 2010
  70. math please help

    Inverse Trigonometric Functions please explain this to me in mathematical steps please how to solve sin^(-1) (-1/2) this equals - pi/6 i know that sin^(-1) domain and range switch from original sin but i don't know how to apply that... i need an

    asked on April 14, 2011
  71. English

    I can't think of a word to describe the reaction from the townspeople? Their gossiping about the Rev... Suprised... I'm stuck -A Rev comes to town and the next day the whole town talks about the Rev

    asked on October 2, 2010
  72. Math

    For this inequality 3x^(2) - 2x -1 > or equal 0 I get x=1 , x=-1/3 would the solution set become {x|1 < x < -1/3} I wasn't sure about the sign, if it should be greater than or equal to .

    asked on September 28, 2010
  73. Health: Sodium

    Having a lot of sodium in a chewy bar is bad but what about having 0.125g sodium is this also bad?

    asked on September 27, 2010
  74. Math

    How to solve this (2x+5)/(x+1) > (x+1)/(x-1) and graph? I tried this and got (x+3)(x-2) and got -32 which isn't right the right answer is x

    asked on September 27, 2010
  75. Precalc

    How to solve this inequality and graph? (2x+5)/(x+1) > (x+1)/(x-1) would I first get rid of x-1 and divide x+1 over to get (2x+5)(x-1)/(x+1)(x+1) > 0 if so, then who would I graph this?

    asked on September 24, 2010
  76. Math Word Problem

    In an NFL football game, the Bears scored a total of 41 poionts, including one safety (2 points) and two field goals (3 points each). After scoring a touchdown (6 points), a team is given the chance to score 1 or 2 extra points. The Bears, in trying to

    asked on September 19, 2010
  77. English: Puritans

    The question is: Why could Winthrop's ideal not be achieved? The paragraph where I have to find the answer: Winthrop describes an ideal society, which, if the Puritans had been able to achieve it, would have been a reasonable facsimile of paradise on

    asked on September 19, 2010
  78. Math

    Going into the final exam which will count as two-thirds of the final grade, Mike has test scores of 86,80,84,and 90. What score does he need on the final to earn an average score of 80? Is this right: (86+80+84+90)/4 = 80 2/3x(85)= 80 or

    asked on September 17, 2010
  79. Math

    In a game, the Bulls score a total of 103 points and made three times as many field goals (2 points each) as free throws (1 point each). They also made eleven 3 points. How many goals did they have? 103=3(2)+ 1 + 11(3) would this equation be right?

    asked on September 17, 2010
  80. English

    I'm confused about the meaning of this sentence: The typical family is three or four children; the latter among the 8 to 12 children that will be born into the family during the lives of the parents. So I get confused where it says "the latter" Does this

    asked on September 15, 2010
  81. Spanish: translation

    I'm not sure how I should translate the english sentences/questions into spanish: 1) What did they bring? - Que lo trajeron? 2) What did she say? - Que se(or te) dijo? 3) Did you read the newspaper? - Tu leiste el periodico? I'm not sure if they're right.

    asked on September 12, 2010
  82. Spanish

    For this what am I supposed to do? Traduzca Vd. al espanol las expresiones en ingles. 1. Nosotros walked por las calles de la ciudad. Do I just change the english verb to spanish ? OR do I translate the whole sentence into english?

    asked on September 12, 2010
  83. Spanish

    For the verb componer in the present tu form is Compone. But in the preterito it's compuso. Is the ending -puso because the verb as poner in it which is irregular? Also, would this be the case for all verbs that have endings that are irregular?

    asked on September 12, 2010
  84. Algebra

    Isn't there a way to solve this (x+7)(x-1)= (x+1)(x+1) like, making both sides have the same denominator ?

    asked on September 7, 2010
  85. Math: Geometry/Algebra?

    A construction company needs to build thirty trusses for the roof of a house. The truss is 20 ft long on the top two sides. What is the bottom length of the truss? the options for this answer were: a)30ft b)40ft c)50ft d)60ft When I solved this, I got 28.3

    asked on September 5, 2010
  86. Chemistry

    I have a test tommorow and I forgot how to do this: Caculate mass of Cr in 548g of K2Cr2O7. I remember putting 548g K2Cr2O7 (1 mol K2Cr2O7/294.2 g K2Cr2O7) then from there I forgot. I got 96.85 g Cr but that does not seem right. Could someone please tell

    asked on September 2, 2010
  87. History WWI

    Do you think that Germany wanting an end to British blockade so that Germany would keep the Sussex Pledge reasonable. I thought not

    asked on September 2, 2010
  88. history WWI

    Would it be right for Germany to sink ships without warning if they fired upon the submarines? I thought yes

    asked on September 2, 2010
  89. Chemistry.

    In which of these compounds is the oxidation state of CI the highest? a) HCIO2 e) HCIO4 Answer is e Is there a formula to solve this ?

    asked on August 29, 2010
  90. Chemistry

    Sorry, I have a couple more questions. For this question: Which one of the following solutions will be the worst electrical conductor at 25 degrees C? d) 0.10 mol L^(-1) CH3OH (aq) How would I solve this? the answer was d.

    asked on August 29, 2010
  91. history

    I kind of don't understand what this means: transformed the social fabric of the United States and countries around the world

    asked on August 28, 2010
  92. US History II

    Would the NASA spacecraft landing on Mars be somehow related to the Republican victory in Congress of 1994?

    asked on August 3, 2010
  93. Computer

    Does anyone know of a website where I could ask computer problems for free? I just tried asking on this one website, but it wanted me to pay... Thanks

    asked on June 21, 2010
  94. History

    Does anyone know a site or article that talks about what happened March 10, 1935 ( the event that I am looking for is when Hitler violates the Treaty of Versailles). Thank You

    asked on June 9, 2010
  95. English

    what is a idiom? Is this one, " don't judge a book by it's cover"

    asked on June 7, 2010
  96. History

    What is the relationship between Progressives and the Sherman Anti-Trust Act of 1890 ? Is it that the Sherman Anti-Trust Act was passed during the Progressive Era and the Progressives wanted it to be passed? Thanks

    asked on May 31, 2010
  97. Spanish Preterite Check!!!!

    Could someone tell me if these are the only things that I need to know for the Preterite? - the time expressions -the ar and er/ir endings -the car,gar,zar endings for the yo form - no written accents: ir,ser,ver,dar are there any other irregular endings?

    asked on May 26, 2010
  98. Math

    Given info: arc length = 65 m formula for arc length: s=rø s = 2pi r radius of circle: 2300 m so to find the angle would I put in 2pi(2300)= rounded to 14451 Then would I multiply: 65(360/14451) if that is right, why would I divide by 360 and multiply by

    asked on May 24, 2011
  99. Precalc

    how to write each expression into a single logarithm. 3log[4]x^(2) + (1/2)log[4]ã(x) the answer is: (25/4)log[4]x steps please

    asked on February 2, 2011
  100. Documents

    What does it mean by Enclosed Documents? documents that I am going to send or that are required

    asked on January 13, 2011


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