1. reading/writing

    I have to pick a creative selection such as a painting, political cartoon, or lyrics form a song, poem etc, and I need to complete the following. 1. What observations I can make about this selection 2. What questions can I develop form these observations

    asked by katie on December 2, 2009
  2. Grade 12 chemistry

    This is the second reaction: HCl(aq)+NaOH(aq)-->NaCl(aq)+H2O(l) (Heat of neutralization) This reaction involves mixing two solutions: 1.00 mol/L NaOH and 1.00 mol/L HCl. Trial 1: 48.0 mL of the NaOH solution is mixed with 47.5 mL of the HCl. The

    asked by tessa on January 2, 2012
  3. Chmistry

    For the following reaction, 4.35 grams of hydrogen gas are allowed to react with with 10.3 grams of ethylene (C2H4). hydrogen (g) + ethylene (C2H4) (g) ethane (C2H6) (g) What is the maximum amount of ethane (C2H6) that can be formed? grams What is the

    asked by Austin Jekins on December 4, 2010
  4. Algebra 2

    so i got a question and would like to know if i did this right For problems 1 through 38, transform the given expression to simple radical form. You can check your answer by evaluating it and the original expression by calculator. on the previous page this

    asked by Algebra 2 on May 27, 2009
  5. chemistry

    Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in the following electron transfer reaction. 2Fe3+ + Sn2Fe2+ + Sn2+ species oxidized species reduced oxidizing agent reducing agent As the reaction proceeds,

    asked by LaMetria on November 29, 2016
  6. Hard Math :(

    2. What answer represents this number in scientific notation? 0.00000916 a. 916 x 10^-8 b. 9.16 x 10^-6 c. 916 x 10^8 d. 9.16 x 10^6 3. What is this number in standard form? 6.8 x 10^-4 a. 5,750,000,000 b. 575,000,000,000 c. 0.00000000575 d. 0.575000000000

    asked by Dude on September 10, 2012
  7. Organic Chemistry

    Consider the weak organic base n-propylamine. The Kb value for this base is 1.3-10^-5, and its pKa is 10.6. At what pH are the "proton on" and "proton off" forms present in equal concentrations? At what pH values would the "proton on" form have the higher

    asked by Lily on July 19, 2015
  8. algebra (check plz)

    write an equation in slope-intercept form of the line that passes through the given points. a. (-6,1), (3,-7) b. (-2/3,4), (6, -1/3) write an equation in point-slope form of the line that passes through the given poitns. c. (-2,5), (4,-3) d. (1/2,-1),

    asked by <3 on October 26, 2009
  9. math PLEASE HELP

    26. a. Show that the ratios Start Fraction 10 over 20 End Fraction and Start Fraction 30 over 60 End Fraction form a proportion by finding a common multiplier. b. Show that the ratios in part (a) are equal by writing them in simplest form.

    asked by Evie on December 15, 2017
  10. Algebra

    5. A piece of rope is cut into two pieces. One piece is used to form a circle and the other is used to form a square. Use a length of rope of 20 feet to write a function f representing the area of the circle as a function of the length of one side s of the

    asked by Ben on January 23, 2015
  11. spanish

    are the verbs in () in the correct tenses? THANKS 4. La madre de Tomas se queja porque el no hizo lo que ella le pidio. Ya es demasiado tarde. Ayer te pedi que me (13) (traer) leche del supermercado y se te (14) (olvidar). Lo siento. Te suplico que me (15)

    asked by sarah on May 11, 2007
  12. English

    1. He built a house with straw. 2. He built a house with straws. 3. He built a house with wood. 4. He built a house with woods. 5. He built a house with brick. 6. He built a house with bricks. (Which one is right? Do I have to use a singular form or plural

    asked by John on August 30, 2009
  13. chemistry

    Calculate the molar enthalpy change for this reaction: HCl(aq 1.00M) + NaOH -> NaCl(aq,.500M)+ H2O Initial temp: 22.15 degrees Celsius Extrapolated temp: 25.87 degrees Celsius DT: 3.72 degrees Celsius Notes: Calculate the enthalpy change for this reaction.

    asked by Failure on November 10, 2015
  14. Math

    the only perfect number of the form x(n) + y(n) A perfect number is an integer that is equal to the sum of its positive divisors (not including itself). Therefore, 6 is a perfect number, since its positive divisors are 1, 2, and 3 and 1+2+3 = 6. 28, 496,

    asked by Mike on November 19, 2006
  15. Chemistry

    Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g) 2. When 2.75 dm3 of O2 react with an excess of glucose (C6H12O2), according to the

    asked by UnName on October 24, 2013
  16. chemistry

    Consider the reaction shown: 452 kcal + 4 PCl5 (s) ¨ P4 (s) + 10 Cl2(g) This reaction is ________ because the sign of ƒ¢H is ________. A) exothermic; neither positive nor negative B) endothermic; positive C) endothermic; negative D) exothermic;

    asked by brandy on November 9, 2009
  17. Chem

    Consider the reaction shown: 452 kcal + 4 PCl5 (s) ¨ P4 (s) + 10 Cl2(g) This reaction is ________ because the sign of ƒ¢H is ________. A) exothermic; neither positive nor negative B) endothermic; positive C) endothermic; negative D) exothermic;

    asked by Mary on November 4, 2013
  18. Chemistry

    Marble is almost pure CaCO3. Acid rain has a devastating effect on marble statuary left outdoors. Assume that the reaction which occurs as: CaCO3(s)+ H+(aq)->Ca2+(aq) + HCO3(aq) Neglecting all other competing, equilibria, Calculate: 1. K for the reaction

    asked by Judy on April 11, 2010
  19. Chemistry

    4. Use the information above to write net ionic equations for the two reactions that you have observed. 5. For each reaction, write the two half-reactions that make it up and calculate the overall reaction potential by adding the two half-reactions. Each

    asked by Please Check! on April 8, 2012
  20. Math

    2x(x+3) = 0 Is there a way to solve that using the below methods? Substitute zero for f(x) and find the roots of the resulting equation, or graph the function and determine the x-intercepts of the graph. Finding the roots of a single variable equation may

    asked by -Untamed- on December 5, 2011
  21. college chem

    You are instructed to create 400. mL of a 0.40 M phosphate buffer with a pH of 6.9. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. (Enter all numerical answers to three significant figures.) H3PO4(s) + H2O(l)

    asked by leah on June 24, 2014
  22. Chemistry

    According to the following reaction, how many moles of hydrogen iodide will be formed upon the complete reaction of 30.0 grams of hydrogen gas with excess iodine? hydrogen (g) + iodine (s) hydrogen iodide (g) moles hydrogen iodide

    asked by Jamal on September 21, 2007
  23. chemistry

    N2(g) + 3 F2(g) → 2 NF3(g) ΔH° = –264 kJ/mol ΔS° = –278 J/(mol∙K) a. Using the information provided above (only), calculate the maximum amount of non-PΔV work that can be accomplished through this reaction at a temperature of 500°C. b.

    asked by chamy on April 21, 2012
  24. Chem

    Consider the following reaction: 6A + 2B 5C + 4D Determine the following rates at a time when the rate of consumption of B is 2.5E-05 M/s. a) rate of consumption of A M/s b) rate of formation of C M/s c) rate of formation of D M/s d) rate of reaction M/s

    asked by Rachel on November 15, 2011
  25. Chemistry

    Silicon Carbide, SiC, is prepared by heating silicon dioxide in the presence of graphite. Carbon dioxide is the by-product of the reaction. How many grams of silicon carbide can be formed from the reaction of 50.0 grams fo graphite with 50.0 grams of

    asked by Scott on February 27, 2017
  26. Chemistry

    According to the following reaction, how many moles of water will be formed upon the complete reaction of 22.6 grams of hydrochloric acid with excess iron(III) oxide? hydrochloric acid (aq) + iron(III) oxide (s)--> water (l) + iron(III) chloride (aq)

    asked by Dalton on December 3, 2009
  27. math

    2. What answer represents this number in scientific notation? 0.00000916 a. 916 x 10^-8 b. 9.16 x 10^-6 c. 916 x 10^8 d. 9.16 x 10^6 3. What is this number in standard form? 6.8 x 10^-4 a. 5,750,000,000 b. 575,000,000,000 c. 0.00000000575 d. 0.575000000000

    asked by chase on September 10, 2012
  28. math

    2. What answer represents this number in scientific notation? 0.00000916 a. 916 x 10^-8 b. 9.16 x 10^-6 c. 916 x 10^8 d. 9.16 x 10^6 3. What is this number in standard form? 6.8 x 10^-4 a. 5,750,000,000 b. 575,000,000,000 c. 0.00000000575 d. 0.575000000000

    asked by chase on September 10, 2012
  29. Language Arts

    The arrow and the song poem 1 i shot an arrow into the air, 2 it fell to earth, i know not where; 3 for, so swiftly it flew, the sight 4 could not follow in its flight Part A Which form best describes the poem this excerpt is from A. lyric poem B. concrete

    asked by SugarPie on February 23, 2017
  30. Chemistry

    1) Write a balanced chemical equation for the reaction between Cu(NO3)2 * 3 H2O and NaOH. Underline the formula for the precipitate produced by this reaction. (The water of hydration in Cu(NO3)2 * 3 H2O appears as liquid water on the right side of the

    asked by Sarah on May 18, 2010
  31. algebra

    Write the equation of the line that passes through point (5, 4) with a slope of 0. would this be x=5 then? no x=5 is the equation of the vertical line passing through (5,4) Any horizontal line, (slope=0), has an equation of the form y = b notice that this

    asked by stressed on May 13, 2007
  32. Chemistry(Thank you for helping)

    1) Given this data in a study on how the rate of a reaction was affected by the concentration of the reactants Initial Rate, RUN # (A), M (B), M (C), M mol L-1 s-1 1 0.200 0.100 0.600 5.00 2 0.200 0.400 0.400 80.0 3 0.600 0.100 0.200 15.0 4 0.200 0.100

    asked by Hannah on February 21, 2012
  33. Chemistry

    Acetic acid is a polar molecule and can form hydrogen bonds with water molecules. Therefore, it has high solubility in water. Yet acetic acid is also soluble in benzene (C6H6), a nonpolar solvent that lacks the ability to form hydrogen bonds. A solution of

    asked by James on February 18, 2012
  34. history

    Which best describes a democracy? form of government in which political power is held by a single ruler form of government in which political power is held by the people government based on appointing officials according to merit and academic

    asked by Kira on September 29, 2017
  35. Calculus

    The police department must determine a safe speed limit on a bridge so that the flow rate of cars is at a maximum per unit time. The greater the speed limit, the farther apart the cars must be expected to be in order to allow for a safe stopping distance.

    asked by Max on November 9, 2012
  36. Spanish

    How would you conjugate the verb "decir" which means to say, to the "yo" form? Would it be digo? Or dico? Please help! Thank you for using the Jiskha Homework Help Forum. The verb "decir" is irregular in the "yo" form of the Present Indicative Tense: digo,

    asked by Tavia on March 6, 2007
  37. Chemistry

    Please check to see if I got these right and specifically for #2, I am not sure if I have this balanced correctly. Write the complete balanced equations for the following: 1) Potassium metal reacts with oxygen gas to form solid potassium oxide. My answer:

    asked by Ashley on August 4, 2010
  38. Biomechanics

    A person with a body mass of 65 kg was running over level ground with a strong tailwind, while wearing a 10 kg weighted vest. The tailwind applied a force of 125 N to the runner’s body in the horizontal direction. Early in the stance phase, the runner

    asked by Brendan on April 7, 2014
  39. CHEMISTRY

    Hello, I am having trouble balancing this redox reaction WITHOUT using the half-reaction method. I believe this is because not all of the elements are in (aq). BrO3-(aq) + N2H4(g) --> Br-(aq) + N2(g) Br is reduced by a factor of 6. N is oxidized by a

    asked by Vanessa on April 21, 2010
  40. chemistry

    My chem book gives me the following Hess' Law example: Mg + 2HCl --> H2 MgCl2 Delta H1 MgO +2HCl --> H2O +MgCl2 Delta H2 H2 + 1/2 O2 --> H2O Delta H3=-68.3kcal The desired reaction is the formation reaction of MgO as follows: MgS +1/2 O2 --> MgO Delta H

    asked by marcus on December 7, 2012
  41. Physics

    To stop a car, you require first a certain reaction time to begin braking. Then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 56.7 m when its initial speed is 80.0 km/h,

    asked by Bob on October 3, 2010
  42. O-Chem

    A student wished to prepare ethylene gas by dehydration of ethanol at 140 C using sulfuric acid as the dehydrating agent. A low-boiling liquid was obtained instead of ethylene. What was the liquid, and how might the reaction conditions be changed to give

    asked by dora on January 15, 2009
  43. Chemistry

    Acid-Base Titrations These are fill in the blank and I really am not sure what the answers are 1. Indicators change color over a range that is called its ---? 2. The common indicator ---? is very useful in studying neutralizations that involve strong acids

    asked by Lauren on December 18, 2017
  44. science

    why does limestone form often in dry climates but rarely in wet climates? http://en.wikipedia.org/wiki/Limestone Why does limestone often form cliffs in dry climates rather than wet climates. i don't know

    asked by Think Critically on January 18, 2007
  45. Chemistry

    In a particular redox reaction, BrO– is oxidized to BrO3– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution. Two half reactions: 1.) Cu^2+ --> Cu^+ 2.) BrO^- --> BrO3^- Balanced: 1.) Cu^2+ +e^- --> Cu^+

    asked by miaow on April 16, 2012
  46. Chemistry

    A student mixes 5.0 mL of 0.00200 M Fe(NO3)3 with 5.0 mL 0.00200 KSCN. She finds that the concentration of FeSCN2+ in the equilibrium mixture is 0.000125 M. Follow these steps to determine the corresponding experimental value of Kc for the reaction of Fe3+

    asked by anon on March 11, 2015
  47. Science

    (1)A geologist was studying rocks in a mountain range. She found a layer of sedimentary rock that had formed in the ocean. Hypothesize how this could happen. My (Answer) Sedimentary rocks forms when sediments have been pressed or cemented together , or

    asked by Raven on September 26, 2012
  48. Chemistry

    Given the reactant side of the total ionic equation for the neutralization reaction of ammonium hydroxide (NH4OH) with hydrochloric acid (HCl), write the total ionic equation (also known as the complete ionic equation) by entering both the reactant and the

    asked by Prosperity on December 3, 2017
  49. chemistry

    According to the following reaction, how many grams of sulfur trioxide will be formed upon the complete reaction of 21.2 grams of oxygen gas with excess sulfur dioxide? sulfur dioxide (g) + oxygen (g) sulfur trioxide (g)

    asked by nik on October 24, 2010
  50. Chemistry

    1.What hydrocarbons generally will undergo an immediate reaction with Br? 2.What hydrocarbons generally will undergo an immediate reaction with KMnO4 Choices for both are Alcohols,Alkanes, Alkenes, Aromatics I think for 1. is at least Alkenes and maybe

    asked by Anonymous on July 27, 2010
  51. Chemistry

    1.What hydrocarbons generally will undergo an immediate reaction with Br? 2.What hydrocarbons generally will undergo an immediate reaction with KMnO4 Choices for both are Alcohols,Alkanes, Alkenes, Aromatics I think for 1. is at least Alkenes and maybe

    asked by Anonymous on July 27, 2010
  52. Chemistry

    According to the following reaction, how many grams of nitrogen gas will be formed upon the complete reaction of 22.2 grams of hydrogen gas with excess nitrogen monoxide? nitrogen monoxide (g) + hydrogen (g) nitrogen (g) + water (l)

    asked by Kaitlin on October 16, 2012
  53. math,correction

    Can someone correct these for me please... Multiply. (x+2)(x-2) My answer..x^2-4 Write in descending-exponent form, and give the degree 4x^5+x^8-7 My answer: In descending-exponent form would be: x^8+4x^5-7, The degree is 8 Multiply. 3xy^2(5xy-4x+6y) My

    asked by jas20 on February 28, 2007
  54. Physics

    For a L-C-R circuit Vin = v0*expjwt. Vout is taken across R a) Calculate the impedance of the circuit measured from the input side. Express the impedance in polar form. b) Calculate the gain=Vout/Vin and express the ratio in polar form. c) Sketch the

    asked by Sandhya on March 29, 2008
  55. Chemistry

    A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease. •State the chemical composition of the sterol that is present in high levels in most people who belong to the high-risk group. •Distinguish between the

    asked by sally on August 5, 2011
  56. Chem

    middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease. •State the chemical composition of the sterol that is present in high levels in most people who belong to the high-risk group. •Distinguish between the

    asked by Anonymous on November 4, 2011
  57. Chemistry

    A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease. • State the chemical composition of the sterol that is present in high levels in most people who belong to the high-risk group. • Distinguish between the

    asked by Marlene on March 30, 2010
  58. chemistry

    A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease. * State the chemical composition of the sterol that is present in high levels in most people who belong to the high-risk group. * Distinguish between the

    asked by lue on April 9, 2011
  59. SS

    How is unity and division a theme in Canadian history? How did distinct English and French populations form in Canada? What is the relationship between natural resources and European settlement? How is conflict and compromise a theme in Canadian history?

    asked by Leila on September 17, 2016
  60. chemistry

    N2 + O2 --> 2 NO change in heat (delta H)= 43.2 kcal based on the reaction, which statement is true? a) 43.2 kcal are consumed when 1.00g of O2 reacts b) 43.2 kcal are consumed when 1.00g of N2 reacts c) 43.2 kcal are consumed when 1.00g of NO is produced

    asked by Katie Y. on November 2, 2009
  61. Algebra, PLEASE HELP ME!!!

    I am so lost, can anyone help me? I don't even understand what the teacher wants out of me with this problem. Suppose that a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the price to p =

    asked by Laura on September 1, 2008
  62. Chemistry(please help)

    I have to calculate the concentration of I2 produced (# of moles of I2 produced / L) based on the stoichiometric ratio in the following equation. 2S2O3^2- + I2 -> 2I^- + S4O6^2- So I got 6.6e-3 L*min for the amount of I2 produced. Now I have to calculate

    asked by Hannah on February 28, 2012
  63. math

    a. Suppose a market research company finds that at a price of p = $30, they would sell x = 32 baskets each month. If they lower the price to p = $10, then more people would purchase the baskets, and they can expect to sell x = 52 baskets in a month’s

    asked by kim on January 16, 2012
  64. Chem

    First off, thanks for the help on the other problems... For the reaction, A(g) + 2 B(g) 2 C(g), Kc = 1 x 10-10 at 25°C. Which of the following statements is true? 1. Delta n = +1 2. The concentration of the products is greater than the concentration of

    asked by Marisol on February 9, 2007
  65. CHEM-last part prob.

    Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2Al(s) + 3Cl2(g) -> 2AlCl3(s) You are given 19.0g of aluminum and 24.0g of chlorine gas. a)If you had excess chlorine, how many moles of of aluminum chloride could be

    asked by K on October 16, 2007
  66. chemistry

    Which factors below affect the rate of a chemical reaction? -Collision frequency -Number of collisions having the least activation energy -Intermolecular orientation -Being Exothermic or Endothermic Also, what formula would I use for this problem: "What is

    asked by anonymous on April 29, 2007
  67. precalc

    1. Find (-1+i)^1/3 2. Express 2(cos5pi/3 + isin5pi/3) in regular form. would this be correct: 1-√3i? 3. Find (2+4i)^3 in regular form. 4. Express 5(cos5pi/6 + isin5pi/6) in regular form. would this be correct?: -5√3/2 +5/2i?

    asked by 95 on December 7, 2011
  68. FRENCH! HELP!

    so i have this french test tomorrow on imparitive, and subjonctif. i have had a lot of trouble remembering them, and telling them apart. can anyone help!? that would be fantastic! thank you so much! its urgent! Imperative (note spelling) means giving a

    asked by leah on December 21, 2006
  69. chemsitry

    A sample consisting of 0.025 mol of a solid compound is placed inside a metal cylinder. The cylinder was immersed in a water bath consisting of 10.00 kg of water at an original temperature of 25.00 °C. When the compound decomposes, the temperature of the

    asked by Nora on October 23, 2010
  70. history

    C/C between american slavery and encomienda system. The encomienda system was a form of land ownership set up after 1492 to divide both the lands and peoples of the New World into workable pieces that were run by Spanish settlers. This system was abused.

    asked by veronica on August 26, 2009
  71. English

    I urgently need you to check these sentences. Thank you. 1) As our students we'll probably have to learn science in English in their last year of high school, we would rather they used English as the lingua franca for their Comenius project. 2) I think

    asked by Henry2 on November 18, 2011
  72. Chemistry

    Hi I have two questions and I was hoping someone could help me with them. 1. Classify the following compounds as ionic or covalent a. MgCl2 b. Na2S c. H2O d. H2S 2. Which compound in each pair exhibits the stronger intermolecular hydrogen bonding? a. H2S

    asked by Alekya on August 2, 2007
  73. Spanish!!!!!! Can Anyone Help Please!!

    Which one would be correct: La semana pasada ellos me DIERON dinero. Or La semana pasada ellos me DI dinero. There's me so i don't know if it should be dar in the yo form or the they form for ellos.

    asked by Amy~ on May 27, 2010
  74. AP CHEMISTRY

    The following acid-base indicators are available to follow the titration. Which of them would be most appropriate for signaling the endpoint of the titration? EXPLAIN ------- COLOR CHANGE ------ INDICATOR Acid form Base Form pH Transition Interval

    asked by HELP PLEASE on March 9, 2012
  75. AP CHEMISTRY

    The following acid-base indicators are available to follow the titration. Which of them would be most appropriate for signaling the endpoint of the titration? EXPLAIN ------- COLOR CHANGE ------ INDICATOR Acid form Base Form pH Transition Interval

    asked by HELP PLEASE on March 9, 2012
  76. English

    1. He spent much money on clothes. 2. He spent too much money in buying books. 3. He spends lots of money traveling to many countries. 4. He spends plenty of time watching TV. 5. He spent a lot of time in buying items in the department store. Are all

    asked by John on June 30, 2008
  77. math

    A model rocket is shot straight up into the air. The table shows its height, h(t), at time t. Graph the table below and determine a function, in standard form, that estimates the height of the rocket at any given time. Time(s) Height (m) 0 0.0 1 25.1 2

    asked by Genny on March 26, 2015
  78. Math(check)

    1)Find the range of the relation [(-1,4)},(2,5),(3,5)}.Then determine whether the relation is a funtion. 4,5,5 is the range 4,5 is a function 2)Find f(-1),if f(x)= x^2-6x/x+2 (-1)^2-6(-1)/-1+2 1+6/-1+2 7/1 =7 3)Find f(a),if f(t)= 2t^2-t-2. 2(a)^2-a-2

    asked by erin on July 26, 2007
  79. physics

    Under what circumstances, if any, will a converging lens form an inverted image of a real object? Under what circumstances, by itself, will a diverging lens form an erect image of a real object?

    asked by Anonymous on October 21, 2014
  80. Chemistry

    Palladium-107 undergoes â decay (t1/2 = 6.5 x 105 yr) to form silver-107. How long will it take for 0.150 mol of silver-107 to form from 1.25 mol of palladium-107? help please...thank you :)

    asked by Queen on December 7, 2010
  81. chemistry

    A 40-year old man, at a prominent legal firm experiences abdominal pain post lunch. He takes several trips to the restroom, but continues to experience pain and cramps. He decides to go to the doctor and admits he consumed 2 bottles of beer @ lunch. The

    asked by Sara on February 5, 2012
  82. Chem

    I have a few questions, if anyone can help me at all it would be amazing. i need this done by TOMORROW (03/03/2008) 1. Cyanogen has been observed in the atmopshere of Titan, Saturn's largest Moon, and in the gases of the interstellular nebulas. On Earth,

    asked by T on March 2, 2008
  83. Chemistry

    I have a few questions, if anyone can help me at all it would be amazing. i need this done by TOMORROW (03/03/2008) 1. Cyanogen has been observed in the atmopshere of Titan, Saturn's largest Moon, and in the gases of the interstellular nebulas. On Earth,

    asked by T on March 2, 2008
  84. Chemistry

    For the following reaction, 9.91 grams of sulfur are allowed to react with 20.8 grams of carbon monoxide . sulfur(s) + carbon monoxide(g) sulfur dioxide(g) + carbon(s) is the maximum amount of sulfur dioxide that can be formed? What is the FORMULA for the

    asked by Julian on September 30, 2015
  85. Chmistry

    For the following reaction, 4.35 grams of hydrogen gas are allowed to react with with 10.3 grams of ethylene (C2H4). hydrogen (g) + ethylene (C2H4) (g) ethane (C2H6) (g) What is the maximum amount of ethane (C2H6) that can be formed? grams What is the

    asked by Austin Jekins on December 4, 2010
  86. Chemistry

    Difference between hydration and hydrogenation reactions? I have searched everywhere in my book and all I can come up with is: Hydorgenation is when atoms of hydrogen H2 are added to the carbons in a double or triple bond of alkenes or alkynes to form what

    asked by Bethany on February 10, 2008
  87. Chemistry

    A 40-year-old manager, at a prominent legal firm in L.A., experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps. He eventually decides to get himself examined. While questioning him,

    asked by Marlene on March 30, 2010
  88. chemistry 101

    Consider the following reaction. CaO (s) + CO2 (g) = CaCO3 (s) A chemist allows 14.4 g of CaO and 13.8 g of CO2 to react. When the reaction is finished, the chemist collects 19.4 g of CaCO3. Determine the limiting reactant, theoretical yield, and percent

    asked by ABCD on July 9, 2011
  89. Math

    1.Divide.Write your answer in simplest form. (1 point) 2/3 divided by 1/4 a.2 1/2 b.2 2/3 c.2 3/8 d.2 2.Find the product. (1 point) 1/2*3/7 a.4/14 b.3/14 c.7/6 d.2/7 3.Divide.Write the quotient in simplest form. (1 point) 3/5 divided by 2/10 a.6/10 b.3/5

    asked by Rose Johnson on September 21, 2015
  90. Math HELP PLEASE! QUICK!

    1.Write the rectangular equation in polar form. (x – 4)2 + y2 = 16 2.Write the equation –2x + 6y = 7 in polar form. 3.Graph the polar equation 2 = r cos(theta – 20°). 4. Write the polar equation in rectangular form. r = –12 cos

    asked by Beccaboo on February 27, 2013
  91. Pre-calculus HELP PLASE !

    1.Write the rectangular equation in polar form. (x – 4)2 + y2 = 16 2.Write the equation –2x + 6y = 7 in polar form. 3.Graph the polar equation 2 = r cos(theta – 20°). 4. Write the polar equation in rectangular form. r = –12 cos

    asked by Beccaboo on February 27, 2013
  92. math

    The graph of an equation in the form y=mx + b is a straight line. Can the equation of every straight line be written in the form y=mx + b (Hint: What is the equation of a vertical line?)

    asked by jess on January 12, 2010
  93. Chemistry

    If 26.4 grams of nitrogen and 30.1 grams of oxygen combine to form nitrogen monoxide, how many grams of nitrogen monoxide must form? I am confused on how to do the math.

    asked by Anonymous on January 22, 2017
  94. science

    which is an example of covalent bond? a.chlorine accepts an electron from calcium b. lons in a bar of pure iron are surrounded by a large number of valence electrons c.sodium gives an electron to chlorine to form a stable bond d.there are less than 16

    asked by bri;) on May 3, 2017
  95. chemistry

    Acids that form ionic solutions will conduct electricity. Acids that form covalent solutions will not conduct electricity. but acids have HYDROGEN in them and hydrogen is a gas is that why the results of the conduction test need to be changed because

    asked by lila on November 1, 2008
  96. physics

    A car is traveling at a constant velocity of 21 m/s (about 45 mph). The driver sees a fallen tree lying across the road and hits the brakes after a delay (reaction time) of 245 ms. (1 ms = 10-3 s.) Calculate the distance the car travels during this 245 ms

    asked by rosy on September 24, 2015
  97. General Chemistry (Chem101)

    A chemist mixes two liquids A and B to form a homogeneous mixture. The densities of the liquids are 2.0514 g/mL for A and 2.6678 g/mL for B. When she drops a small object into the mixture, she finds that the object becomes suspended in the liquid; that is,

    asked by Emily on September 20, 2012
  98. Chemistry

    Does sodium metal react with potassium hydroxide solution? No. It would be a displacement reaction and this only works if the metal is higher in the activity series than the one it wants to displace. Given that potassium is the highest ranked metal (sodium

    asked by Fiona on July 29, 2007
  99. Chemistry: check answers

    Please check. Thank you. 2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O72– + NH4+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O72– B.) Cr2O72– -> Cr2O3 C.) NH4+ -> N2 D.) N2 -> NH4+ 3. Which oxidation-reduction reactions are

    asked by Jack on March 22, 2013
  100. Math

    1: select all the pairs of ratios form a proportion. (2 points) A: 1/6, 4/20 B: 7/9, 28/36*** C: 14/19, 21/27 D: 30/80, 6/18 2: Which pair of ratios does NOT form a proportion? (1 point) A: 3/5, 24/40 B: 30/10, 15/5**** C: 9/14, 3/4 D: 7/12, 14/24 3: For

    asked by AngelDabSwag on May 8, 2018