Most popular questions and responses by shadow
  1. math

    If a number is not a rational number, then it is _____. (1 point) a integer a rational number a whole number

    asked on September 26, 2017
  2. math

    which solid does the net form? hexagonal prism hexagonal pyramid rectangular prism rectangular pyramid

    asked on December 5, 2017
  3. social studies

    How did Horace Mann contribute to the reform in education? A. His development of books with raised letters aided in the education of the blind B. His educational philosophy led to a new approach in educating the deaf C. His radical call for classroom

    asked on November 2, 2017
  4. social studies

    why does the cartoon from the bank war 1832 portray president jackson as a king? A many people felt he was motivated by his own wealth B some felt he had used his power inappropriately in vetoing legislation to recharter the bank C some felt there remained

    asked on October 19, 2017
  5. social studies

    Which of the following best describes the similarity between emerson's and thoreau's central beliefs? A.They both lectured on the importance of the inner light B.they both believed the human spirit was reflected in nature C.they both considered the rise of

    asked on November 2, 2017
  6. math

    sara needs to cover the top and sides of the cylinder below About how many square inches of paper will Sara need? 528 in. 415 in. 207 in. 179 in.

    asked on December 5, 2017
  7. social studies

    what is this drawing of a camp meeting likely illustrating? A. the growth of reform movements in the united states B. the large influence revivals had on americans C. the rise in the formation of women's trade unions D. the increase in support of american

    asked on November 2, 2017
  8. L.A

    I'm trying to find the theme of the book I'm reading, but I don't really know what exactly is a theme, could anyone give me an idea of what a "theme" of a story is? -Is the theme = What is the author trying to teach us? Or is it the central message of the

    asked on October 20, 2010
  9. science

    Earth's energy sources include both renewable and nonrenewable resources. name at least three sources of energy that could be used in your house. then describe the ideal energy source for generating most of your home's electricity, and explain why you

    asked on February 27, 2017
  10. social studies

    Which of the following laws would the free-soil party have supported? cottonocracy slave codes wilmot proviso fugitive slave act ms sue i don't want a link

    asked on November 12, 2017
  11. Chemistry

    If 3.21 mol of a gas occupies 56.2 L at 44*C and 793 torr, 5.29 mol of this gas occupies __________ L under these conditions. . -How will I solve this using PV= nRT? I tried using PV= nRT. By just plugging in the value and got 131 but the answer is around

    asked on April 1, 2013
  12. social studies

    We hold these truths to be self-evident: that all men and women are created equal; that they are endowed by their creator with certain unalienable rights; that among these are life, liberty, and the pursuit of happiness what founding documents is being

    asked on November 2, 2017
  13. chem

    Calculate the amount of heat required to convert 17.5g of ice at -33.5∘C to steam at 100.0∘C.

    asked on April 23, 2014
  14. chemistry

    Hydrogen gas can produced by the reaction between metallic aluminum and aqueous hydrochloric acid 2Al+6HCl----2AlCl3+3H2 Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes

    asked on November 19, 2013
  15. social studies

    Why did Jefferson oppose Hamilton’s plan for creating a national bank? Select all that apply. (2 points) He argued that Congress did not have the constitutional power to establish it. He felt that there would be no way to effectively run a national

    asked on October 3, 2017
  16. Chemistry

    The problem ask what is the mass of iron(iii) chloride contains 2.35 x 10^23 chloride ions. I understand the molar mass is 162.20 g/mol. - 2.35 x 10^23 chloride ions would be around 0.39 moles. - The work that my teacher gave me is 0.39 moles * (1 mol

    asked on January 29, 2013
  17. Social Studies

    Why did the United States become involved in Mexico's civil war? Select all that apply. 1)Relations had weakened between the United States and the new government. 2)Mexico was unable to end the war without U.S. intervention. 3)The United States provided

    asked on January 31, 2018
  18. chemistry

    Question: When a pink aqueous solution of potassium permanganate, faintly acidified with dilute sulfuric acid was treated with 10% aq. hydrogen peroxide, the reaction took place with the evolution of gas bubbles, and the pink solution was turned colorless.

    asked on May 5, 2011
  19. math

    Which of these nonterminating decimals can be converted into a rational number A 0.48907542 repeating B 0.02020202 repeating C 0.92589542 repeating D 0.10203040 repeating

    asked on September 26, 2017
  20. math

    Solve the following proportion x/3 = 8/9 A 18 B 27 C 2 D 24

    asked on October 16, 2017
  21. Chemistry

    Determine the volume of methane CH4 gas needed to react completely with 0.660 L of 02 to form methanol CH3OH I'm confused because I'm sure CH4 + O2 don't give you CH3OH. Thanks

    asked on March 29, 2013
  22. social studies

    Which factor best accounts for the price change in the Model T automobile? A. Low deman B. Orginized labor C. Mass production D. wartime inflation

    asked on December 16, 2017
  23. Chemistry

    How many moles of ion are in the following? A. 0.0200 g AgNO3 - Could someone give me the step to solve such problems? Thanks

    asked on January 29, 2013
  24. social studies

    How did horace mann feel that reforming the american educational system was important? A. it would help people attain better jobs B. it would help in the fight to end slavery C. it would help in the fight for gender equality D. it would help people become

    asked on November 1, 2017
  25. math

    What is the surface area of the given figure. A.) 1,008 cm B.) 1,728 cm C.) 1,392 cm D.) 1,216 cm

    asked on December 5, 2017
  26. social studies

    Which of the following statements best summarizes Washington’s viewpoint on American foreign policy? (1 point) The United States can take advantage of Europe’s ambition. The United States should limit interaction with Europe to commerce, or trade.

    asked on October 3, 2017
  27. Social Studies

    1.Why is " elastic clause' an appropriate name for Clause 18 of Section 8 of Article l? 2.Think about what it mean to "express" something. Which powers - delegated or implied - could also be referred to as expressed powers? Why? 1.Elastic Clause is the

    asked on April 11, 2010
  28. social studies

    which of the following statements best reflects the rights of citizens that are protected by the bill of rights

    asked on September 21, 2017
  29. Chemistry

    Find the enthalpy for : 4Fe + 3O2 = 2Fe2O3 I got the following informations: Fe + 3H2O = Fe(OH)3 + 3/2H2 - Enthalpy is 160.9 kj H2 + 1/2O2 = H2O - Enthalpy is -285.8 kj Fe2O3 + 3H2O = 2Fe(OH)3 - Enthalpy is 288.6 I try using Hess Law but cannot solve it.

    asked on May 13, 2013
  30. Chemistry

    Water has an extremely high boiling point compared to other compounds of similar molar mass because of ? Hydrogen Bond Adhesive force Covalent bonding Dispersion Forces I believe the answer is A since hydrogen bond is a strong bond and thus require most

    asked on March 10, 2013
  31. Precaculus

    tan4.7 * cot4.7 I understand tan4.7 = 1/ cot 4.7 but I'm stuck after this thanks.

    asked on March 6, 2013
  32. Algebra

    The volume in cubic feet of a Cd holder can be expressed as V(x)=-x^3-x^2+6x, the depth is 2-x , factor the polynomial to find linear expression for the height and the width. - Do I just factor the -x^3-x^2+6x? It because I know the volume is LWH, so don't

    asked on February 7, 2012
  33. Math

    A rectangular piece of fabric measures 37 by 45 inches. A triangular scarf with a height of 21 inches and a base of 25 inches is cut from the fabric. How much fabric is left over?

    asked on February 17, 2016
  34. Precalculus

    How do i solve this problem? Find the polar form of the complex number where the argument satisfies 0≤θ≤2π. 0+3i

    asked on January 26, 2019
  35. math

    Solve the following proportion x/3 = 6/9 A 18 B 27 C 2 D 24

    asked on October 16, 2017
  36. Math

    Kent invested $5,000 in a retirement plan.He allocated X dollars of the money to a bond account that earns 4% interest per year and the rest to a traditional account that earn 5% interest per year. 1.Write an expression that represents the amount of money

    asked on May 11, 2010
  37. Math

    A standard deck of playing cards contains 52 cards in four suits of 13 cards each. Two suits are red and two suits are black. Find each probability.Assume the first card is replaced before the second card is drawn. 1.P(black,queen) 2.P(jack,queen) How

    asked on February 10, 2010
  38. Algebra

    A gardener is putting a wire fence along the edge of his garden to keep animals from eating his plants. -If he has 20 meters of fence, what is the largest rectangular area he can enclose? -What quadratic function represents the area of the garden? Thanks

    asked on December 1, 2011
  39. Language

    I have to write a essay and I don't know how to lengthen the rough draft could someone please give me tips? Here's my rough draft Comparison-and-Contrast Essay The Story-Teller and The Drummer Boy of Shiloh Comparison and Contrast means to tell the

    asked on November 10, 2017
  40. Math

    I need helppp D: ---------------- Simplify the expression -4-5(x+8) *-5x-44 *-5x+36 *-x-8 *-20x+8 5x+6(x-2)-8(x-3) *19x+36 *19x+12 *3x-36 *3x-12 x+8

    asked on October 3, 2017
  41. chemistry

    In the following reaction, how many liters of carbon dioxide, CO2, measured at STP, would be produced from the decomposition of 143 g of magnesium carbonate, MgCO3? MgCO3----MgO+CO2

    asked on November 19, 2013
  42. Physics

    A playground is on the flat roof of a city school, hb = 5.70 m above the street below (see figure). The vertical wall of the building is h = 6.90 m high, to form a 1.2-m-high railing around the playground. A ball has fallen to the street below, and a

    asked on December 14, 2018
  43. educational technology

    5-7 sentences about the progressive era

    asked on October 30, 2017
  44. Math

    A 64 inch long board is divided into lengths in the ratio 2:3. What are the two lengths into which the board is divided? Thanks

    asked on March 7, 2011
  45. Chemistry

    4Fe + 3O2 = 2Fe2O3 So in math book it say " You can interpret this equation in terms of representative particles by saying that four atoms of iron react with three molecules of oxygen to produce two formula unit of iron(iii) oxide" Why it say that there

    asked on February 24, 2013
  46. Business Class

    In our business class, we have to come up with a business and make it different from other competitor. My business is desktop publishing ( Creating brochures , advertisement, newspaper, and business card) and I can't think of way to make the business

    asked on September 20, 2011
  47. JAVA

    Using only one "System.out.print" command, print the following quote. Make sure to include the quote marks (") in your output. "I do not fear computers. I fear the lack of them." Isaac Asimov

    asked on December 14, 2018
  48. Chemistry

    I need to write a balance equation of the decomposition of aluminum carbonate. I know the starting "reactant" is Al2(CO3)3 but would the "product' be 2Al + 3(CO3) ? Thanks

    asked on February 18, 2013
  49. Chemistry

    If 25 grams of copper(II) sulfate pentahydrate were heated until all water was removed, how much residue would remain?- Could someone help me understand this question? I don't understand it at all. Thanks

    asked on February 3, 2013
  50. Math

    The measure of two complementary angles are 6y+3 and 4y-13. Find the measures of the angles. ( In this question, are they saying 2 different complementary angle? or two angle that make up a complementary? )

    asked on December 31, 2010
  51. Chemistry

    Let say Pb(NO3)2 combine with FeCl3, would this yield PbCl + Fe(NO2)3? Thanks

    asked on January 27, 2013
  52. Essay

    I'm writing an essay on the topic " The most memorable moment in your life" and I was wondering if you guy could give me suggestions on how I could start my introduction. Thanks ( The most memorable moment I chose was the first day of my summer vacation)

    asked on October 3, 2010
  53. Math

    There is something wrong with this definition for a pair of vertical angles: “If AB and CD intersect at point P,then APC and BPD are a pair of vertical angles.” Sketch a counterexample to show why it is not correct. Can you add a phrase to correct it?

    asked on September 9, 2010
  54. Math

    Strong winds called the prevailing westerlies blow from west to east in a belt from 40 degree to 60 degree latitude in both Northern and Southern Hemisphere. 1.Write an inequality to represent the latitudes where the prevailing westerlies are not located.

    asked on March 18, 2010
  55. Chemistry

    A mole of a pure substance contains 6.02x10^23 atoms. Alway true, sometime true or never true? -I was thinking sometime true since a pure substance can be like H2O but H2O have 3 "atoms" (Is this what you call individual part of H2O?). Each "atoms" have

    asked on February 5, 2013
  56. Chemistry

    Calculate the grams of oxygen gas present in 2.5 L sample kept at 1.66 atm pressure and a temperature of 10 C. - I got 5.72 grams Determine the volume of oxygen gas needed to completely combust 0.202 L of Butane(C4H10). -I got 1.31 L O2. -Thanks

    asked on March 31, 2013
  57. Math

    How would I solve this part of the Fibonacci sequence piecewise function? f(n) = f(n-1)+f(n-2) if n > 1. Thanks

    asked on March 2, 2013
  58. Math

    Write each equation in standard form. 1.y-3=-2.4(x-5) -The answer I got was 2.4x + y = 15. Could someone please check my answer and tell me how to solve it if it wrong? Thanks

    asked on August 21, 2010
  59. Social Studies

    1. What caused the settlement of African Americans in the Mississippi Alluvial Plain region than in the Ozark Mountains region. Slavery and Plantation . Mining and logging . The use of modern technology. Low priced land and modern technology. 2. Why did

    asked on February 13, 2019
  60. Chemistry

    The temperature of oxygen is 810 torr at 298 K , what will the pressure be at 330 K? Using Lussac's Law, would the answer be 896.98 torr? Thanks

    asked on March 31, 2013
  61. Science

    Can a person with a genetic disorder that has been corrected by gene transfer pass the corrected condition to is or her children? Explain -Yes, it is because genetic disorder is cause by an an abnormal in genes or chromosomes so it is not a 100% that the

    asked on February 20, 2011
  62. Math

    Use the fundamental counting principle to find the total number of outcomes in each situation. 1.Rolling two number cubes and tossing one coin. = Is the outcome = 4? 2.Choosing from 3 sizes of distilled,filtered, or spring water. = Is the outcome 9? Thanks

    asked on February 8, 2010
  63. math

    find the length of the hypotenuse of a triangle with legs of 5 ft and 12 ft? 11 ft 13 ft 17 ft 60 ft

    asked on September 26, 2017
  64. ELA

    Your assignment for this portfolio is to do the following: research the Victorian period in England. You can focus on work, schools, historical events, cultural details, or holiday traditions. Compare the Victorian period to modern day life.

    asked on May 6, 2017
  65. Chemistry

    Because the mass of the reactants equal to the mass of the product of a reaction, the number of moles will be conserved. -I think this is sometime true but I don't know a way to prove that it sometime true. Anyone got an idea ? Thanks

    asked on February 10, 2013
  66. Geometry

    Anyone know how to write a proof for this? - The perpendicular segment from a point to a plane is the shortest segment from the point to the plane. Thanks

    asked on February 13, 2011
  67. Science

    How sediments,fossil, and ice core record Earth's geologic history? It record Earth's geologic history by giving scientist an idea of when certain climates or events happen.(Is this a good answer?) Thanks

    asked on October 6, 2010
  68. Language Arts

    Use the fallowing sentences and use vivid verbs and adjective to rewrite the sentences. The sentences that I'm having problem with is : I play video game. Could anyone give me idea on how to improve that sentences? Thanks

    asked on August 24, 2010
  69. Chemistry

    I had to find the root mean square velocity of a gas using the only formula KE=1/2MV^2 . Is this even possible using only this formula?

    asked on March 11, 2013
  70. Math

    What positive value of b makes 9^2-bx+4 a perfect square trinomial? How would you solve this problem? Thanks

    asked on March 25, 2012
  71. Chemistry

    H2O2 + Heat = H2O + O2 Would this be combustion or decomposition? Since the products are H2O and O2, I thought it would be combustion but then H2O can be decompose into H2O and O2 which would be decomposition.

    asked on January 13, 2013
  72. Science

    I'm currently studying for a science test and I need help on one of the question. - What is a tsunami and how is it related to an earthquake? For the part " What is a tsunami, my answer would be Tsunamis are giant waves caused by earthquakes or volcanic

    asked on June 2, 2011
  73. Language Arts

    I'm writing an essay on the topic " Contributing to the community" and I was wondering what you guy think if I start my first sentence like this. Everyone in their life had made some world-shattering contributions to the community.These significant

    asked on September 15, 2010
  74. Math

    Express each statement using an inequality involving absolute value.Do not solve. 1.The majority of grades in Sean's English class are within 4 points of 85. 2.AA thermometer is guaranteed to give a temperature no more than 1.2F from the actual

    asked on March 17, 2010
  75. Math

    The problem I have to solve is log with base 2 ^6 multiply by log base 6 ^ 8. I use the change of base formula and got log6/log2 * log8/log6 Which become log6/log2 * log2()^3/ log 6 I'm stuck here thanks.

    asked on June 18, 2013
  76. Chemistry

    Let say you were given this equation: NiBr2 + Co = Ni + CoBr2 How can you tell which is liquid,gas,solid,aqueous? Do you just use what you know and figure it out? Like since NiBr2 can be broken down because of the solubility rule, you can assume it aq then

    asked on January 13, 2013
  77. Chemistry

    I need to write the total ionic equation for this equation. Copper(ii)sulfate + iron = iron(iii)+ copper. Won't it be Cu2+ + SO4-2 + Fe = Fe3+ + Cu ? The answer key say 3Cu2+ + 3SO4-2 + 2Fe = 2Fe3+ + 3SO4-2 + 3Cu Where did they get the sulfate for the

    asked on January 13, 2013
  78. Shadow

    Write an equation to solve each problem. The sides of one cube are twice as long as the sides of a second cube. What is the side length of each cube if the total volume of the cubes is 72 cm^3? Would it be, 3x+6x=72? Thanks

    asked on September 1, 2011
  79. Math

    Write a two column proof. -If XZ=ZY,XZ=4x+1,and ZY=6x-13, then x=7. Statements: Reason: 1.XZ=ZY,XZ=4x+1 and ZY=6x-13 1.Given That as far as I got to ^. Thanks

    asked on October 11, 2010
  80. Math

    The radius,diameter, or circumferences of a circle is given. Find the missing measures. D=2a,r=___,C=___. For the radius I got 1a and the circumferences I got 6.28.a. Could someone check my answer? Thanks

    asked on September 19, 2010
  81. Math

    State whether each expression is a polynomial. If the expression is a polynomials, identify it as a monomial,a binomial, or a trinomials. 1.7a^2b+3b^2-a^2b 2.1/5y^3+y^2-9 3.6g^2h^3k Are these the right answers? 1.Yes-trinomials 2.No 3.Yes- monomials.

    asked on May 9, 2010
  82. L.A

    How should I begin my first paragraph when I'm trying to interpret a poem? The poem is Nothing Gold Can Stay by Robert Frost.Thanks

    asked on May 4, 2010
  83. Math

    Express each statement using an inequality involving absolute value.Do not solve. 1.The majority of grades in Sean's English class are within 4 points of 85. 2.AA thermometer is guaranteed to give a temperature no more than 1.2F from the actual

    asked on March 18, 2010
  84. Physic

    A car traveling 100 km/h is 200m away from a truck traveling 50 km/h (in the same direction). Assuming constant braking acceleration, what is the minimum deceleration the car must have if it is not to hit the truck? Can someone hint me on how I can start

    asked on August 28, 2013
  85. Chemistry

    How much water must be added to 6 mL of a 0.05M stock solution to diltue it to 0.02M ? The answerI got is 15 mL. Is this correct? Thanks

    asked on April 18, 2013
  86. Math

    The metric ton of CO2 product per gallons of gas can be calculated with the following. 8.78 x 10-3 metric tons of CO2 are emitted per gallon of gas. Let say the gallon of gas is 1288. Would the CO2 produced be around 11.3 tons? Thanks

    asked on January 22, 2013
  87. English

    I'm not a native speaker of English so I have grammar problems. What are some ways that I can improve my grammar? Do reading grammar book help? Also, is there any way to improve my writing beside writing more? Thank you

    asked on December 17, 2012
  88. Algebr

    Each week you must do a minimum of 18 hours of homework. Participation in sports requires at least 12 hours per week. You have no more than 35 hours per week in total to devote to these activities. - Write a system of inequalities to model the situations.

    asked on November 13, 2011
  89. Math

    Could anyone explain to be what these term mean in math? I try googling them but can't find the answer. Thanks 1.Opposite of a Difference 2.Opposite of a Sum 3.Opposite of an Opposite

    asked on August 28, 2011
  90. Math

    1.A job hotline service charges $25 plus a 4% commission c on the first month of earnings if it finds work for a client. Write an equation that represents the total cost T to find a job through the hotline. What is the cost if a client earns $1500 the

    asked on November 20, 2010
  91. chemistry

    In the ground state of an atom of silver (Ag), how many electrons will there be with the quantum number l = 1?

    asked on November 13, 2010
  92. Geometry

    Use the Law of Detachment to write a valid conclusion for the given information. 1.If two angles are supplementary, then their measures have a sum of 180. 2.Angle X and Angle Y are supplementary. Would the conclusion be this? Thanks -The sum of X and Y is

    asked on October 17, 2010
  93. Social Studies

    1.Do you think the special powers of the Senate or those of the House of Representatives are more important? What is this question asking me? It is asking me who power do I think is more important between the Senate and the House of Representatives? Thanks

    asked on April 11, 2010
  94. Math

    Emilio has 8450 trees to plant in rows on his tree farm he will plant 125 trees per row how many full rows of trees will he have explain

    asked on May 8, 2018
  95. science

    where does energy come from in north carolina

    asked on October 31, 2017
  96. math

    If the relative change between the original price and the new price is 30% decrease, then the new price is ________% of the original price?

    asked on September 30, 2017
  97. math

    5. 4, 12, 36, 108, . . . A. 304, 912, 2,736 B. 324, 972, 2,916 C. 354, 1,062, 3,186 D. 332, 996, 2,988

    asked on February 27, 2017
  98. Chemistry

    Is this true or false? Thanks A mole of CCl4 is composed of one atom of carbon and four atoms of chlorine. I put false because it contain one mole of C 4 mole of Cl. Each mole have more than one atoms. Thanks

    asked on January 29, 2013
  99. Chem:DrBob

    Dr.Bob, yesterday you told me : "The best way I think is to show examples. 12Mg = 1s2 2s2 2p6 3s2 Here the 1s orbital is lower than the 2s and they are lower than the 3s etc." 19K = 1s2 2s2 2p6 3s2 3p6 3d0 4s2 Here the 1s is lower than the 2s and those are

    asked on November 6, 2012
  100. Chemistry

    Is this always true, sometime true, or never true? The orbitals of a principal energy level are lower in energy than the orbitals in the next higher principal energy level. -I'm thinking sometime true but I can't figure out how to explain why it sometime

    asked on November 6, 2012


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