Anon

Most popular questions and responses by Anon
  1. Chemistry

    On another planet, the isotopes of titanium have the following natural abundances. Isotope 46Ti Abundance 70.900% Mass(amu) 45.95263 Isotope 48Ti Abundance 10.000% Mass(amu) 47.94795 Isotope 50Ti Abundance 19.100% Mass(amu) 49.94479 What is the average

    asked on December 8, 2012
  2. Chemsitry

    The Ksp of PbBr2 is 6.60× 10^–6. What is the molar solubility of PbBr2 in pure water? What is the molar solubility of PbBr2 in 0.500 M KBr solution? What is the molar solubility of PbBr2 in a 0.500 M Pb(NO3)2 solution?

    asked on March 17, 2013
  3. P.E HELP

    1.   The average individual should consume ______ calories on a daily basis. 1,000 2,000 3,000 5,000 i think it is 2,000 but not sure

    asked on November 12, 2015
  4. S.S.

    which event would benefit to producers rather than toy consumers?

    asked on April 17, 2017
  5. Art

    During which time period were artists keenly interested in using the golden ratio in their paintings? A.Baroque Period B.Oriental Period C.Futuristic Period D.Renaissance Period When the Greeks built the Parthenon its dimensions nearly matched the golden

    asked on March 2, 2015
  6. Chemistry

    (a) Calculate the molarity of a solution that contains 0.175 mol ZnCl2 in exactly 150 mL of solution. (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid? (c) How many milliliters of 6.00 MNaOH solution are needed to

    asked on October 31, 2011
  7. Science

    Humans developed antibiotics to fight bacterial infections. However, some antibiotics are no longer efective in killing the bacteria they once killed. How does the theory of evolution explain this?

    asked on October 14, 2013
  8. Math

    Anita can clean a typical pool in 8 hours. Chao can clean a typical pool in 6 hours. How long should it take Anita and Chao working together to clean a typical pool? I'd like to know how to work out this problem in order to find the answer.

    asked on May 17, 2016
  9. Chemistry

    Classify each of the following as a redox reaction or a non-redox reaction. Zn+CuCl2 -> ZnCl2+Cu HCl+NaOH -> H2O+NaCl 2CO+O2 -> 2CO2 SO3+H2O -> H2SO4

    asked on December 2, 2012
  10. chemistry

    A 15.27 g sample of Mo2O3(s) is converted completely to another molybdenum oxide by adding oxygen. The new oxide has a mass of 18.33 g. Add subscripts below to correctly identify the empirical formula of the new oxide.

    asked on September 18, 2014
  11. Chemistry

    An aqueous solution of an unknown solute is tested with litmus paper and found to be acidic. The solution is weakly conducting compared with a solution of NaCl of the same concentration. Which of the following substances could the unknown be: KOH,NH3,HNO3,

    asked on October 31, 2011
  12. Calculus AP

    f is a differentiable function on the interval [0, 1] and g(x) = f(2x). The table below gives values of f ′(x). What is the value of g ′(0.1)? x 0.1 0.2 0.3 0.4 0.5 f ′(x) 1 2 3 –4 5 The answers are: 1 2 4 cannot be determined I got 1 please let me

    asked on May 1, 2018
  13. MATH HELP ASAP

    For questions 1–4, find the slope of the following graphs. 1. a. 1/2 b. 2 c. 2 d. -1/2 2. a. 3/2 b. 1 c. -1 d. -3/2 3. a. 2/3 b. 3/2 c. 3 d. -2/3 4. a. 0 b. 1 c. -1 d. undefined For questions 5 and 6, find the slope of the line that goes through the

    asked on May 4, 2016
  14. math, probability

    Let X1,X2,… be a sequence of independent random variables, uniformly distributed on [0,1] . Define Nn to be the smallest k such that X1+X2+⋯+Xk exceeds cn=n2+n12−−−√ , namely, Nn = min{k≥1:X1+X2+⋯+Xk>cn} Does the limit limn→∞P(Nn>n)

    asked on August 31, 2019
  15. Chemistry

    4.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.20 M, where it remained constant. A(s) B(g)+C(g) Then, the container volume was doubled

    asked on February 5, 2013
  16. English

    I have a few questions. It was a long assignment and most of the questions were easy but a few I'm nervous about. Short story "The Olympic Swimmer" Who will be the winner bold? Athletes from both far and near Train and strain to be the best. But who will

    asked on December 7, 2015
  17. english

    Which of the following text examples supports the conclusion that Father will never stop building things? Choose all that apply. A) he builds Dragonwings despite the financial hardship it causes. B) after setting a kite free, he offers to build separate

    asked on June 8, 2018
  18. Algebra 1

    Measures of Central Tendency and Dispersion Practice 2. Tell which measure of central tendency best describes the data. Time spent on Internet (min/day) 75 38 43 120 65 48 52 A. Mean B. Median C. Mode Help? I really don't understand this :/

    asked on May 8, 2018
  19. Chemistry

    Sort each of the following events based on whether the solubility of the indicated gas will increase, decrease, or stay the same. Each phrase specifies the gas involved and the change in its environment. 1. The temperature is increased 2.the partial

    asked on January 23, 2013
  20. chemistry

    Calculate the pH of the resulting solution if 30.0 mL of 0.300 M HCl(aq) is added to (a) 35.0 mL of 0.300 M NaOH(aq). (b) 40.0 mL of 0.350 M NaOH(aq).

    asked on April 10, 2012
  21. Phychology CHECK my answers

    My answers have the star 1. The nervous system is the body’s ______________ network. (1 point) communication*** organization reactive production 2. The central nervous system (CNS) consists of the brain and the ___________. (1 point) heart neural network

    asked on December 5, 2017
  22. American Government check my answers

    1. According to the excerpt, the ruling on Obergefell v. Hodges did what? Select all that apply. (2 points) extended and continued the protections of the Equal Protection Clause to same-sex couples*** applied the Fourteenth Amendment to race rendered the

    asked on May 18, 2017
  23. Science test

    Can someone please help me with science test answers!! Why do scientists use models of natural systems? A- Scientist use models of natural systems because these systems are often too large or too small or too complex to study directly B-Scientists use

    asked on September 25, 2019
  24. math , probability

    Jack has a collection of 10 pairs of gloves in his wardrobe. Before a business trip, he has to pack his luggage, and he selects 8 gloves, without looking at them. We assume that any set of 8 gloves is equally likely to be chosen. Find the probability that

    asked on August 29, 2019
  25. Biology

    1. Which of the following is the definition of ecology? the social movement with a goal to protect the environment the recycling of human-made materials to reduce waste going into landfills the study of interactions among organisms and between organisms

    asked on August 24, 2012
  26. English

    Read these lines from T.S. Elliot's "Preludes." "Six o’clock./The burnt-out ends of smoky days./And now a gusty shower wraps/The grimy scraps/Of withered leaves about your feet/And newspapers from vacant lots..." Which of the following is being

    asked on May 9, 2018
  27. Physics

    A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both reach the edge of a 7.8 m waterfall. If the spy's speed is 11 m/s and the officials' speed is 22

    asked on September 2, 2014
  28. math, probability

    Let X and Y be independent random variables, uniformly distributed on [0,1] . Let U=min{X,Y} and V=max{X,Y} . Let a=E[UV] and b=E[V] 1. Find a 2. Find b 3. Find Cov(U,V) . You can give either a numerical answer or a symbolic expression involving a and b .

    asked on August 31, 2019
  29. English check my answers

    For the following questions, identify the correct form of irregular verbs in the sentences. Choose from the word box below. A. past B. present participle C. past participle 47. Claude is getting a new computer for his birthday this year. (1 point) A B****

    asked on June 9, 2017
  30. Spanish

    I would appreciate it if someone could check my answers immediately please!!!!!!! I don't need answers, I just need someone to see if mine are correct. 1. Translate the following into Spanish: "Where is the door?" A-Dónde es la puerta? B-Dónde están la

    asked on October 18, 2017
  31. Physics

    A cube of mass m1 = 6.8 kg is sitting on top of another cube of the same size and mass m2 = 0.7 kg while they are both in free-fall. Ignoring any air resistance, what is the magnitude of the normal force with which the bottom cube is acting on the top

    asked on February 23, 2015
  32. American government check my answer

    5. Which of the following are examples of discriminatory laws passed by the U.S. government that impacted those depicted in the photo? Select all that apply. (2 points) Chinese Exclusion Act Civil Rights Act of 1965 Immigration Quota Act DREAM Act my

    asked on May 18, 2017
  33. Grammar

    Which of the following is a complex sentence? A.After the class, we all went to Alec's house. B.Alec's brother John was home, but his sister Cynthia wasn't. C. Alec suggested we all go to the neighborhood pool. I'm thinking the answer is A, but I'm not too

    asked on November 14, 2012
  34. geography

    Check my answers, please? I put an asterisk next to which ever ones are my answer. Thanks! Why do you think the Inuit have retained aspects of their early culture? *A.because they are used to that lifestyle B.because such adaptations allow them to survive

    asked on April 2, 2013
  35. Chemistry

    Which of the following reagents would oxidize Cr to Cr2 , but not Fe to Fe3 ? Ca Co Ca2+ Br2 Co2+ Br- Which of the following reagents would oxidize Cu to Cu2 , but not Cl– to Cl2? Br2 Ca Co2+ Co Br- Ca2+

    asked on March 29, 2013
  36. spanish

    if you greet someone who is your age how do you ask how are you in spanish?

    asked on August 29, 2017
  37. math , probability

    We observe a Poisson process with unknown rate. The rate lambda of the Poisson process is either 2 or 4, with equal probability, and the actual value is not known. We observe the process over the time interval 0, 3 and observe exactly 9 arrivals. Given

    asked on August 29, 2019
  38. Physics

    Three dynamics carts have force sensors placed on top of them.(cart 1, with mass of 2.2 kg, has one sensor --> cart 2, with mass of 2.5 kg, has sensors two and then three --> cart 3, with mass of 1.8 kg, has sensors four then five). Each force sensor is

    asked on May 7, 2016
  39. calculus

    A 5.5 foot tall woman walks at 6ft/s torward a street light that is 16.5 ft above the ground. what is the rate of change of the length of her shadow when she is 14ft from the street light? At what rate is the tip of her shadow moving? How do I get the

    asked on April 14, 2016
  40. math

    The pressure P, of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that a particular amount of a gas is initially at a pressure of 84 Pa at a volume of 36 L. If the volume is expanded to 216 L, what will the new

    asked on May 17, 2016
  41. Algebra 1 Please help

    A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: f(n) = 8(1.05)n Part A: When the scientist concluded his study, the height of the plant was

    asked on December 17, 2016
  42. Math - Probability

    A spinner is divided into 11 equal sections numbered from 0 to 10. You spin the spinner once. What is P(even)? a. 3/5 b. 1/2 c. 5/11 d. 6/11

    asked on April 23, 2015
  43. Chemistry

    A solution is 5.0× 10–5 M in each of these ions: Ag , SO42–, Cl–, CO32– Which precipitate will form? Ag2SO4 (Ksp = 1.12× 10–5) AgCl (Ksp = 1.77× 10–10) Ag2CO3 (Ksp = 8.46× 10–12)

    asked on March 14, 2013
  44. math

    noone has helped me? . Suppose that the total market demand for a product consists of the demands of individual 1 and individual 2. The demand equations of the two individuals are given by the following equations: QD,1 =20-P QD,2 =60-5P Suppose that the

    asked on September 26, 2019
  45. Grammar (Last one :) )

    Except for Ronnie and _____, everyone was on time. him(my answer) he Between you and _____, I know the answer to the mystery. I me(my answer) Leave your message with Ms. Horioka and _____. me(my answer) I It was Geraldine Ferraro _______ ran for vice

    asked on February 5, 2013
  46. Math

    The box-and-whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grades at Lincoln Middle School. Two box and whisker plots are shown above a number line. The number line is scaled from 2 to 38 by

    asked on April 19, 2017
  47. NHD (Social Studies)

    Please help me out on answering this question: For a working bibliography, how is a title for a website cited? Thank you tutors for reviewing the question. I might have more social studies questions and then algebra questions, so if you see more questions

    asked on December 12, 2015
  48. English answer check

    1. Like the modernists, postmodern writers focused on subjective experience rather than objective cultural norms. (1 point) expressing or dealing with facts or conditions as perceived without distortion by personal feelings, prejudices, or

    asked on May 30, 2017
  49. social studies

    which statement correctly contrast the Lancaster turnpike with the national road 1. the Lancaster turnpike was a longer road 2. the national road required users to pay a toll to use it 3. the national road was a corduroy road 4. the Lancaster turnpike was

    asked on November 4, 2016
  50. Geography

    What kind of map could you use to show information about a city? -a relief map -a population density map -a political boundary map -a vegitation map -All of the above You can pick as many as you want, but the question is only worth one point. I think the

    asked on January 25, 2013
  51. Chemistry

    Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal. M(OH)2 (s) M^2+ (aq) + 2OH- (aq) Ksp=4e-16 M(OH)2 (s) + 2OH- (aq) M(OH)4 ^2- (aq) Kf=0.06 Estimate the solubility of M(OH)2 in a solution buffered at pH= 7.0, 10.0, and 14.0 I'm not

    asked on May 9, 2012
  52. Science

    Scientists wondered how volcanoes could be located so far from tectonic plate boundaries until one proposed the idea of (Hotspots, Mid-ocean ridges, transform faults, plates), where the magma is much hotter than the surrounding magma. These are

    asked on September 12, 2019
  53. Chemistry

    Calculate the standard free-energy change for the following reaction at 25 C degrees. 2Au^3+(aq)+3Ni(s) 2Au(s)+3Ni^2+(aq) Ni2+(aq) + 2e- -> Ni(s) E=-0.26 Au3+(aq) + 3e- -> Au(s) E=+1.498 G= ? KJ Would it be G=1.758? •Chemistry - DrBob222, Sunday, March

    asked on April 1, 2013
  54. American Government

    When Alabama's governor refused to end the policy of segregation in public universities, he invoked which common argument for separation of powers under federalism? A.states' rights B.checks and balances C.direct initiative D.bicameral legislation I think

    asked on November 26, 2016
  55. algebra PLEASE HELP ASAP

    1. A bag contains 9 green marbles and 11 white marbles. You select a marble at random. What are the odds in favor of you picking a green marble? a. 9:20 b. 2:9 c. 11:9 d.9:11 my answer is d? 2. A bag contains 5 green marbles, 8 red marbles, 11 orange

    asked on May 3, 2016
  56. Chemistry

    One liter of a buffer composed of 1.2 M HNO2 and 0.8 M NaNO2 is mixed with 400 mL of 0.5 M NaOH. What is the new pH? Assume the pKa of HNO2 is 3.4.

    asked on February 15, 2018
  57. Social Studies

    compare and contrast the views of the federalist party and the democratic republican party on at least three different historical issues?

    asked on December 16, 2017
  58. Science

    To create less waste in the first place is to a. reduce (?) b. reuse (?) c. recycle d. incinerate Hi. So, for this question, i completely understand what it's asking but i can't figure out which one it would be. Incinerate means to burn waste, but that

    asked on November 9, 2017
  59. Chemistry

    The enthalpy of combustion of butane C4H10 is described by the reaction: C4H10(g) + (13/2) O2(g) -> 4CO2(g) + 5H2O(g) ΔH°rxn = –2613 kJ/mol Given the following enthalpies of formation: ΔH°f[CO2(g)] = -393.5 kJ/mol ΔH°f[H2O(g)] = -241.8 kJ/mol

    asked on March 18, 2017
  60. chemistry

    A volume of 100mL of 1.00 M HCl solution is titrated with 1.00 M NaOH solution. You added the following quantities of 1.00 M NaOH to the reaction flask. Classify the following conditions based on whether they are before the equivalence point, at the

    asked on August 6, 2012
  61. permutation and combination

    The game of euchre uses only the 9s, 10s, jacks, queens, kings, and aces from a standard deck of cards How many five-card hands have at least two red cards?

    asked on January 23, 2014
  62. Math please help!!!

    Julia is allowed to watch no more than 5 hours of television a week. So far this week, she has watched 1.5 hours. Write and solve an inequality to show how many hours of television Julia can still watch this week.

    asked on September 26, 2016
  63. physics

    A spring scale hung from the ceiling stretches by 6.1 cm when a 2.0 kg mass is hung from it. The 2.0 kg mass is removed and replaced with a 2.5 kg mass. Part A What is the stretch of the spring?

    asked on December 9, 2015
  64. English

    tell how using a reading role helped you understand the book. The reading roles are described in the link of unit 4, lesson 1, slide 4. support your response with at least two pieces of evidence from the novel. This is for Johnny Tremain.

    asked on December 7, 2018
  65. Chemistry

    The boiling point of an aqueous solution is 102.48 °C. What is the freezing point? I know that formula for freezing point is delta Tf = Kf*m but what do I plug in for each?

    asked on January 29, 2013
  66. Algebra PLEASE HELP ASAP

    1.Justin writes the letters I-L-L-I-N-O-I-S on cards and then places the card in a hat. What are the odds in favor of picking an I? a. 5:3 b. 3:5 c. 3:7 d. 1:2 my answer is b? 2. Justin writes the letters I-L-L-I-N-O-I-S on cards and then places the cards

    asked on May 3, 2016
  67. Chemistry

    A metal foil has a threshold frequency of 5.45 x 10^14 Hz. Which color of visible light will not eject electrons from this metal? a) blue b) indigo c) violet d) orange c=(wavelength)(v) 3.0x10^8m/s = (wavelength)(5.45 x 10^14 Hz) 550 nm -> releases green.

    asked on April 9, 2017
  68. Algerbra 1 B

    Simplify the radical expression. Show all your steps. \sqrt{363} -3 \sqrt{27}

    asked on April 12, 2018
  69. Physics

    A stone is tied to a string (length = 0.700 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the

    asked on September 25, 2014
  70. small business management

    An Internet search for information about franchise businesses will not help you find out A. the number of hours you'll have to put in. B. start-up costs. C. the variety of franchise businesses available. D. support you'll receive from the parent

    asked on July 8, 2015
  71. English

    Choose the word or phrase that best defines the italicized word. "An aged man is but a *paltry* thing,/ A tattered coat upon a stick..." a.inadequate b.invisible c.significant d.unwise

    asked on May 8, 2018
  72. Algebra 1

    Your school wants to take out an ad in the paper congratulating the basketball team on a successful season, as shown to the right. The area of the photo will be half the area of the entire ad. What is the value of x? Round answer to nearest hundredth. Use

    asked on November 5, 2018
  73. Math

    A rectangle is dilated using a scale factor of 6. The image is then dilated using a scale factor of 1/3. What scale factor could you use to dilate the original rectangle to get to the final rectangle. Explain.

    asked on November 17, 2016
  74. Physical Science

    You have a sealed glass jar full of air. If you put it in the freezer, what happens to the gas pressure in the jar??

    asked on October 20, 2017
  75. history

    1) what significant effect did The Treaty of Paris, signed after the French and Indian War, have on the French (1 point) a) France had to withdraw its empire to Central and South America b) France had to allow the British to claim and settle the Ohio

    asked on October 12, 2018
  76. chemistry

    Write an equilibrium expression for each chemical equation involving one or more solid or liquid reactants or products. HCHO2(aq)+H2O(l)⇌H3O+(aq)+CHO−2(aq) Use A for [HCHO2], B for [H2O], C for [H3O+], D for [CHO−2].

    asked on December 3, 2014
  77. intro to computers

    You are shopping for a new computer. You see the memory listing as 1GBX4. What does this mean? A. 4 DDR first generation DIMMs B. 1 GB of memory made up of 4 DIMMs C. 4 GB of memory made up of 4 DIMMs D. 1 DDR fourth generation DIMMS ????

    asked on May 24, 2014
  78. us history

    What was the main effect of the Civil War on the women's movement? A. The women's movement shifted their focus to helping widows of the Civil War. B. The movement was put on hold while women focused on anti-slavery reform and the war effort. C. The

    asked on March 29, 2016
  79. Calculus

    Michael Perez deposited a total of $4000 with two savings institutions. Bank A pays interest at the rate of 5%/year, whereas Bank B pays interest at the rate of 8%/year. If Michael earned a total of $308 in interest during a single year, how much did he

    asked on September 11, 2018
  80. english, check please :)

    Read this excerpt from a speech on women's rights delivered by Elizabeth Cady Stanton on July 19, 1848: We do not propose to petition the legislature to make our husbands just, generous, and courteous, to seat every man at the head of a cradle, and to

    asked on March 7, 2016
  81. Math

    The bottom of a shopping bag measures 8 inches by 10 inches. The bag has a height of 12 inches. How much paper is needed to make the bag?

    asked on February 29, 2016
  82. history

    What policies led to the Boxer Rebellion?

    asked on July 16, 2018
  83. Chemistry

    Given ∆Hºrxn = -1670 kJ/mol for 2Al(s) + (3/2)O2(g) --> Al2O3(s), determine ∆Hº for the reaction 2Al2O3(s) --> 4Al(s) + 3O2(g). I flipped Al(s) + (3/2)O2(g) --> Al2O3(s) to Al2O3(s) --> A(g) + (3/2)O2(s) and multiplied the molar values by 2. I ended

    asked on March 25, 2017
  84. check english please.. romeo and juliet

    Read this excerpt from the prologue to act II of Romeo and Juliet: CHORUS: Now old desire doth in his death-bed lie, And young affection gapes to be his heir; That fair for which love groan'd for and would die, With tender Juliet match'd, is now not fair.

    asked on May 17, 2016
  85. Grammar

    Which of the sentences below displays the correct punctuation? A.The patient looked at the doctor as though he had never seen her before. B.Even though Laura is very young she is already a skilled chess player. C.Carlos asked me to buy the gift, since I am

    asked on November 16, 2012
  86. Chemistry

    Check my answer please? A reaction requires 22.4 L of gas at STP. You have 45.0 L of gas at 100 kPa and 373 K. Which of the following statements is true? The gas constant is 8.31 L-kPa/mol-K. You will have an excess of gas and the reaction will occur.

    asked on June 3, 2014
  87. Algebra 1

    9. Find the solutions to the system. y=x^2+5x+6 y=4x+12 A. (2,20) and (-3,0) B. (2,20) and (-3,-18) C. (-2,-20) and (-3,-18) D. no solutions 10. Find the solutions to the system. y=x^2-3x-1 y=8x-1 A. (0,-1) and (11,388) B. (0,-1) and (11,87) C. (-1,0) and

    asked on April 23, 2018
  88. Chemistry

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 16.0 g, and its initial temperature is -11.4 °C. The water resulting from the melted ice reaches the temperature of your skin, 31.0 °C. How much

    asked on December 8, 2012
  89. Chemistry

    Sodium sulfate is slowly added to a solution containing 0.0500 M Ca^2+ (aq) and 0.0390 M Ag^+ (aq). What will be the concentration of Ca^2+ (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca^2+ (aq) can be separated from the Ag^+ (aq) by

    asked on March 17, 2013
  90. am I right ? or no?

    Which equations represent exponential growth? Which equations represent exponential decay? Drag the choices into the boxes to complete the table. Exponential Growth: y=4000(1.0825)^t ,y=12,000(0.72)^t , y=8000(0.97)^t , Exponential Decay: y=1700(1.25)^t ,

    asked on January 4, 2017
  91. Grammar

    Which of the following combines the sentences below by coordinating? Senate pages may be between fourteen and seventeen years old. Pages in the House must be high school juniors or seniors. A.Senate pages may be between fourteen and seventeen years old,

    asked on October 18, 2012
  92. Math

    which shape has 5 faces 5 vertices and 8 edges? triangular Pyramid** Rectangular pyramid Pentagonal pyramid

    asked on March 17, 2016
  93. Chemistry

    Which of the following will be more soluble in an acidic solution than in pure water? Be(OH)2 Ag2SO4 RbClO4 CuCN Cul

    asked on March 14, 2013
  94. Chemistry

    The figure below is a heat curve for an unknown outerspace substance discovered by the Mars rover. By understanding the heat curve, scientists can make inferences about the composition of the planet. What is the temperature of fusion, Tfusion, and

    asked on December 9, 2012
  95. Chemistry

    A 32 W (1 W = 1 J/s) lamp generates violet light at a wavelength of 420 nm. How many photons of this light will the lamp generate in 2.0 s?

    asked on April 9, 2017
  96. chemistry

    How many moles of HNO3 are present if 0.236mol of Ba(OH)2 was needed to neutralize the acid solution?

    asked on August 6, 2012
  97. Science/English

    According to Al Gore in An Inconvenient Truth, how is wind power beneficial in the fight against global warming? a.) it uses wind panels to trap the power of the wind b.) it emits water vapor, which cools the atmosphere c.) it creates a vast amount of

    asked on October 25, 2015
  98. Chemistry

    In which direction will the net reaction proceed X(g)+Y(g)Z(g) Kp=1.00 at 300k for each of these sets of initial conditions? a) [X]=[Y]=[Z]=1.0 m net reaction goes to the left net reaction goes to the right reaction is at equilibrium I chose 3 for a. b)

    asked on February 5, 2013
  99. World History

    7. Which north american civilizations adapted to their environment in part by farming? Choose all that apply, 2 answers. A.Haida B.Inuit C.Iroquois D.Puebloan

    asked on September 22, 2017
  100. Physics

    A real spring does not oscillate forever. Instead, it eventually comes to a stop. Does this violate the Law of Conservation of Energy? Explain why or why not.

    asked on September 25, 2017

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