Popular questions and responses by Kira

    A 1.000 L vessel is filled with 2.000 moles of N2, 1.000 mole of H2, and 2.000 moles of NH3. When the reaction N2(g) + 3 H2(g) ⇀↽ 2 NH3(g) comes to equilibrium, it is observed that the concentration of H2 is 2.53 moles/L. What is the numerical value of

    asked on January 11, 2015
  2. history

    Which accurately describes historical events of the Han Dynasty? during the han dynasty, emperor qin shi huang began building the great wall of china during the han dynasty, historian believe the l ching, a fortune telling guide, was written during the

    asked on September 28, 2017
  3. history

    Which most accurately reflects the development of agriculture in early African civilizations? the walls of the jabrin castle were erected in oman to protect valuable crops the kingdom of Ghana exchanged surplus crops and gold for textiles and salt brought

    asked on September 29, 2017
  4. tourism and hospitality

    Which most accurately demonstrates the development of civilization and culture in the Neolithic era? people progressed in metal work, now making steel tools instead of bronze tools people followed a nomadic lifestyle dependent on the migration patterns of

    asked on September 30, 2017
  5. history

    Which most accurately describes ancient Phoenicia’s agricultural practices? Phoenicia did not have much land for farming, but did grow fruits, wheat, olives, and grapes for wine Phoenicia had plenty of fertile land, where plums, apples, oranges, and

    asked on September 30, 2017
  6. history

    How were the cultural customs of Oceania passed down from generation to generation? A) Oceania cultures used hieroglyphics and pictographs on seashells. B) Oceania cultures kept written records using silk. C) Oceania cultures used an oral tradition for

    asked on September 28, 2017
  7. history

    What best describes tactics used by the Arab Empire when it captured a region? A) The conquerors used Visigoth mercenaries to maintain order. B) The conquerors forced the populace to convert Islam. C) The conquerors used the region's existing leaders as

    asked on October 2, 2017
  8. history

    Which best defines settlement as it pertains to the history of civilization? a location where two parties resolved disputes or conflict over land ownership a location where groups ceased roaming and built permanent dwellings location where natural

    asked on September 29, 2017
  9. algebra

    Medical research indicates that the risk of having a car accident increases exponentially as the concentration of alcohol in the blood increases. The risk is modeled by R=6e^12.77x Where x is the blood alcohol concentration and R, given as a percent, is

    asked on April 12, 2014
  10. 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 on September 29, 2017
  11. Math

    There are two numbers twice as far from 14 as they are from 20 what are the numbers?

    asked on September 14, 2018
  12. history

    What was the capital city of the Ottoman Empire?

    asked on October 3, 2017
  13. history

    What was the Roman Empire’s system of government prior to Julius Caesar that heavily influenced Western democracies? Peasants, including women and slaves, were ruled by kings, barons, and lords. Roman government consisted of a king, crown prince, and an

    asked on September 29, 2017
  14. history

    Which major culture of the ancient world is responsible for producing literature such as the Iliad and the Odyssey? I think its greek

    asked on September 29, 2017
  15. history

    In 332 BC, which military leader defeated the Persians and annexed Egypt to be part of his Macedonian Greek empire? alexander the great Julius Caesar mark antony king tutankhamum is it a

    asked on September 29, 2017
  16. LA Help!

    Both Ernesto from barrio boy and the boy in "A Day's Wait" interact with adults. Ernesto interacts with Miss Ryan, while the sick boy interacts with his father. Compare and contrast how the boys interact with the adults. Focus on how the boys think of the

    asked on December 6, 2016
  17. math

    Admission tickets to the local Nutcracker production cost $2.50 for children and $3.50 for adults. The price for 8 tickets was $23.00. How many adult and children tickets were purchased?

    asked on December 6, 2014
  18. chemistry

    Poly(methyl methacrylate) (PMMA), more commonly known as acrylic glass.Draw the monomer, given that this polymer forms by addition polymerization. Include all H atoms.

    asked on November 22, 2014
  19. GA History

    Which Native American groups are living in the Colony of Georgia, according to the map? I honestly can't tell and my glasses aren't doing anything to help. Please help me!

    asked on November 9, 2018
  20. Egg-speriment help

    I go to conventions academy for seventh grade. A week ago we were assigned to the egg-experiment where "One of the cell structures you will be learning about is the cell membrane. In the Chapter Project, you will model how a cell membrane works to let

    asked on November 2, 2017
  21. history

    Which most accurately describes how religion impacted the Mayan culture? mayan priests performed human sacrifices to appease the angry gods the maya shared spiritual beliefs and cultural characteristics with their rivals, the Aztecs the maya believed in

    asked on September 30, 2017
  22. history

    Which accurately describes the Roman Empire’s influence on the Celts throughout northern Europe? there is no evidence that the celts and the romans made contact the celts resisted roman rule by successfully defeating Julius ceasar advancing armies in

    asked on September 30, 2017
  23. CHEM

    At equilibrium at 1.0 L vessel contains 17.00 mol of H2, 20.00 mol of CO2, 13.00 mol of H2O, and 6.000 mol of CO at 427◦C. CO2(g) + H2(g) ⇀↽ CO(g) + H2O(g) What is the value of K at this temperature for the reaction?

    asked on January 11, 2015
  24. Science

    A 60 kilogram tourist tries horseback riding in tagaytay.The horse has a mass of 500 kilogram.He moves around a circular path with a radius of 10 meter at a rate of 5 meter per second.Compute the centripetal force.

    asked on July 23, 2019
  25. Algebra

    Given f(x) = 3/4x + 12, find the value of x when f(x) = x. A) 3 B) 48 C) 4/3 D) 4/7

    asked on October 12, 2018
  26. history

    Which options accurately describe the impact of the Roman Empire on later civilizations? (Select all that apply.) the roman empire invented gunpowder used by western nations in future wars the roman empire bureaucratic government was adopted by European

    asked on October 2, 2017
  27. history

    Which accurately describes battle achievements of Alexander the Great? He defeated the Roman Empire in Egypt, founded the city of Cairo, and ordered the preservation of King Tutankhamun artifacts. He defeated the Persian Empire in Egypt and founded the

    asked on September 29, 2017
  28. psychology

    which of the followinfg is not a current trend regarding marriage? A. an increase in the average age at first marriage. B. an increase in the percentage of couples who voluntarily remain childless. C. an increase in the number of single adults. D. a

    asked on April 27, 2015
  29. chemistry

    A buffer with a pH of 3.93 contains 0.17 M of sodium benzoate and 0.32 M of benzoic acid. What is the concentration of [H ] in the solution after the addition of 0.054 mol of HCl to a final volume of 1.5 L?

    asked on November 4, 2014
  30. physics

    Calculate the number of H2O molecules in a human body of mass 50.6 kg. Assume that, on average, water makes up 62% of the mass of a human body. (Use 1.0 u for the atomic mass of hydrogen, and 16.0 u for the atomic mass of oxygen.)

    asked on April 12, 2013
  31. science

    why are some foods spicyer than others?

    asked on November 12, 2012
  32. math

    The bumper car ride at the state fair has 3 red cars, 4 green cars, and 2 blue cars. Joe is first in line for the ride and is assigned a car at random. Bill in next in line and is randomly assigned a car. What is the probability that both joe and bill will

    asked on May 24, 2010
  33. MATH

    X= 92]96]100]104]108 Y=23]24]25]26]27 WHAT IS THE VALUE OF Y WHEN X IS 68?? IF Y=X-19, WHAT IS THE VALUE OF X WHEN Y= 34

    asked on February 20, 2008
  34. Chemistry

    1.) How many grams of 2-propanol are expected from the complete reaction of 672 g of propene? 2.)How many moles of propane are expected from the complete reaction of 82.8 g of propene? 3.)How many grams of propane are expected from the complete reaction of

    asked on April 5, 2007
  35. Mathematics

    Regular triangular pyramid has 6 cm long base edge and slant height k=9 cm. Find the lateral area of the pyramid. and Regular triangular pyramid has the slant height k=12 cm and lateral area AL = 198 cm2. Find the length of the base edge.

    asked on May 24, 2020
  36. science

    Heat is so closely related to _____, the same units are used to measure both. work power temperature** momentum i think temperature

    asked on October 15, 2019
  37. Algebra 1

    A geometric sequence is defined by the general term t^n = 75(5^n), where n ∈N and n ≥ 1. What is the recursive formula of the sequence? A) t^1 = 75, t^n = 5t^n - 1, where n ∈N and n > 1 B) t^1 = 75, t^n = 75t^n - 1, where n ∈N and n > 1 C) t^1 =

    asked on October 23, 2018
  38. math

    A giant football field is made for the floor of the gym. The length of the gym is 90 feet. Using this same scale, determine the width of the paper football field. How do I solve this if it says that the dimensions are 160 ft? by 360 ft. and the end zone is

    asked on November 14, 2017
  39. history

    What were some differences between the Byzantine and Arab Empires? (Select all that apply.) the byzantine empire forbade trade with Visigoth and Frankish nations, whereas the arab empire encouraged seagoing trade. the byzantine empire had great regard for

    asked on October 3, 2017
  40. history

    What tradition of the Ottoman Empire gave the sultan absolute power yet a duty to ensure fair justice and protection for the empire’s citizens? is it adalet

    asked on October 3, 2017
  41. history

    Which most accurately describes the role of Abraham in the Hebrew scriptures? he led his people west from Mesopotamia to canaan, in present day isreal he fought and slew the philistine giant known as goliath he led his people against philistine. after he

    asked on September 30, 2017
  42. tourism and hospitality

    What country do tourists originate from?

    asked on September 30, 2017
  43. history

    how did the Agricultural Revolution impact religion and culture?

    asked on September 30, 2017
  44. tourism and hospitality

    what is the economic multiplier for the UK?

    asked on September 29, 2017
  45. history

    Which most accurately describes the structure of the Roman government when it was a republic? A: The Roman government was a dictatorship in which an emperor ruled by divine right. B: The Roman government consisted of two consuls and the senate. C: The

    asked on September 29, 2017
  46. history

    Which best describes the Assyrian Empire’s impact on the Mesopotamia region? The Assyrians were the last known hunter-gatherer group in Mesopotamia. The Assyrians attacked and killed thousands of Muslims in Egypt, Iran, and Syria. The Assyrians attacked

    asked on September 29, 2017
  47. tourism and hospitality

    What percentage of the england's income is generated from tourism?

    asked on September 29, 2017
  48. tourism and hospitality

    Is the economic impact in England positive or negative?

    asked on September 29, 2017
  49. tourism and hospitality

    how the Agricultural Revolution led to permanent settlements and technological advancements, the emergence of government and laws, and advancements in religion and culture. What would be a thesis statement for this?

    asked on September 27, 2017
  50. tourism and hospitality

    what are Social or cultural impacts tourism has in UK?

    asked on September 27, 2017
  51. Calculus

    Hi, I am trying to find a closed form for the power series from n=2 to infinity of x^n/(n-1)n. I'm not really sure how to do this- I found the first and second derivatives which were x^(n-1)/(n-1) and x^n-2. However, this didnt really seem to help much.

    asked on August 2, 2017
  52. math

    If I have 2 sweatshirts, 2 shirts, 2 pants, 2 shorts, and 2 shoes what would the tree diagram look like?

    asked on October 20, 2016
  53. Math

    5 3/8 c = _ fl oz 43 fl oz 43/64 fl oz 86 fl oz 29 fl oz 65 in. = _ ft. 6 5/12 ft. 12 ft. 5 5/12 ft. 780 ft. I confused with these, so if you could help that would be great!!

    asked on October 12, 2016
  54. Social Studies

    If most Americans favor cutting spending or raising taxes to balance the budget, why have politicians not taken either of these steps to do so?

    asked on September 16, 2016
  55. Chemistry

    98.4 * (1/2)^(19/3.8) = 3.075 g CH3COOH*** H2PO4^– LiOH NH3

    asked on June 1, 2016
  56. math

    Half Robert’s piece of wire is equal to 2/3 of Maria’s wire. The total length of their wires is 10 feet. How much longer is Robert’s wire than Maria’s?

    asked on December 8, 2015
  57. Math

    A solution of 10% sulfuric acid and one of 25% sulfuric acid are to be used to make 500 ml of 20% sulfuric acid. How many ml of each solution needs to be used in the mixture? (round answers to the nearest ml)

    asked on September 8, 2015
  58. MATH

    In ΔHIJ, the measure of ∠J=90°, the measure of ∠I=64°, and HI = 5.4 feet. Find the length of JH to the nearest foot.

    asked on March 10, 2015
  59. chemistry

    For the formation of ammonia, the equilibrium constant is known to be 5.2 × 10−5 at 25◦C. After analysis, it is determined that [N2] = 3.1 M and [H2] = 0.8 M, both at equilibrium. How many grams of ammonia are in the 10 L reaction vessel at

    asked on January 11, 2015
  60. math- weighted averages

    Santa tasted 500 ml of a 60% solution of eggnog. How many milliliters of a 30% eggnog solution should be added to obtain a 50% solution?

    asked on December 8, 2014
  61. chemistry

    Draw the three alkenes, each of formula C5H10, that will form 2-methylbutane upon hydrogenation.

    asked on November 22, 2014
  62. algebra

    How long, to the nearest day, will it take $25,000 to grow to $500000 at 9% annual interest compounded monthly?

    asked on April 12, 2014
  63. algebra Word problem

    what interest rate is required for an investment subject to continuous compounding to triple in 15 years? A= Pe^rt ?

    asked on April 11, 2014
  64. algebra

    write the equation in standard form: 2x^2-12x+5

    asked on December 8, 2013
  65. Math

    how do you subtract whole numbers into fractions?

    asked on April 18, 2013
  66. phy

    An emphysema patient is breathing pure O2 through a face mask. The cylinder of O2 contains 0.20 ft3 of O2 gas at a pressure of 2200 lb/in2. (a) What volume would the oxygen occupy at atmospheric pressure (and the same temperature)? ft3 (b) If the patient

    asked on April 13, 2013
  67. phy

    An emphysema patient is breathing pure O2 through a face mask. The cylinder of O2 contains 0.20 ft3 of O2 gas at a pressure of 2200 lb/in2. (a) What volume would the oxygen occupy at atmospheric pressure (and the same temperature)? ft3 (b) If the patient

    asked on April 13, 2013
  68. phy

    Doppler ultrasound is used to measure the speed of blood flow. If the speed of the red blood cells is v, the speed of sound in blood is u, the ultrasound source emits waves of frequency f, and we assume that the blood cells are moving directly toward the

    asked on April 12, 2013
  69. phy

    At a factory, a noon whistle is sounding with a frequency of 484 Hz. As a car traveling at 77 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change in

    asked on April 12, 2013
  70. Math

    The inner diameter of a piston is normally distributed with mean of 10 cm and standard deviation 0.03cm a)below what value of inner diameter will fall fifteen percent of the piston rings?

    asked on April 7, 2013
  71. Physics

    a helicopter, travelling horizontally at a constant velocity, is 82m above ground. The pilot prepares to release a package intended to land on the ground 96m horizontally ahead. no air resistance. He lets the package drop. what is the velocity of the

    asked on October 28, 2012
  72. Physics

    A package of dishes (mass 50.0 kg) sits on the flatbed of a pickup truck with an open tailgate. The coefficient of static friction between the package and the truck's flatbed is 0.330, and the coefficient of kinetic friction is 0.230. (a) The truck

    asked on October 16, 2012
  73. chemistry

    What is the density of a sphere with a radius of 12.7 meters and a mass of 285 kilograms?

    asked on September 8, 2012
  74. physiology/ anatomy

    I'm doing a lab about osmosis/ diffusion. We put a 2 molar solution of NaCl into a dialysis bag and submerse the bag in water, weighing the bag after 15 minute increments for an hour. I need help explaining why the weight of the bag would fluctuate (EX. 6

    asked on September 7, 2012
  75. Calculus AB

    Find the derivative of f(x) = 1/x(27,000,000/pi + 6,750,000) + 20pix^2 Can someone help me with this? Thanks.

    asked on May 18, 2012
  76. Calculus

    I need to integrate ((e^-x)^2 - (-ex)^2)dx Can someone help?

    asked on May 6, 2012
  77. reimbursement metodologies

    im currently writing a paper on this subject but have no more than the opening and first body paragraph im supposed to go into detail about how it works and the history but am having problems finding alot of information. can anyone help me out???

    asked on January 5, 2012
  78. Economics

    You are considering quitting work for two years to earn an MBA. Your current job pays $25,000 per year (after taxes), but you could earn $55,000 per year (after taxes) if you had a MBA at Southern University. Tuition is $10,000 per year and the cost of an

    asked on November 6, 2011
  79. Grade 12 Data Management

    A baseball player has had 14 hits in 60 times at bat in the last 20 games. How many hits does the batter need in her next ten at bats to increase the probability of her getting a hit to 0.300?

    asked on September 25, 2011
  80. math

    a carpet measures 7 meters 3 decimeters in length and 4 meters 2 decimeters in width. what is its area in square meters?

    asked on April 25, 2011
  81. earth science

    why are warm and cold fronts ussually weaker in the summer?

    asked on October 20, 2010
  82. earth science

    what kind of air mass weather is likely to follow the passing of a warm front?

    asked on October 20, 2010
  83. geometry

    the lengths [in inches] of two sides of a regular pentagon are represented by the expression 5x-27 and 2x-6 . fined the length of a sied of the pentagon.

    asked on August 30, 2010
  84. 7th grade

    How do you interview a character in a book?

    asked on July 10, 2010
  85. 9th grade-Math

    How do you solve this equation? 35x^2-49x __________ -7x

    asked on June 4, 2010
  86. Physics

    How fast does a car have to accelerate to go from 10.0 m/s to 30 m/s in 125 meters?

    asked on January 28, 2009
  87. CHem help pkz

    Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use average bond enthalpies to estimate the enthalpy delta H (rxn) of the following reaction: 2SF4 + O2 ---- 2OSF4 Express

    asked on November 13, 2008
  88. Interview

    i have an interview tomorrow about the public issues in ohio and the future of ohio how do i go about talking/appearing/etiquette?

    asked on November 3, 2008
  89. math

    let s= the sum of all even numbers from 2 to 10 {including 2 and 10} Let t= the sum of all odd numbers from 1 to 9 z{including 1 and 9.. find s-t

    asked on February 20, 2008
  90. math

    how many whole numbers less than 100 does the digit 9 appear at least once??

    asked on February 20, 2008
  91. math

    how can you determine whether a design has rotational symmetry? if a design has a rotational symmetry, how many can you find the angle of roation??

    asked on February 20, 2008
  92. math

    how can u determine whether a design has a reflectional symmetry??

    asked on February 20, 2008
  93. math

    jack an joan painted 3 houses in 12 days.At that rate, how many houses can they paint in 28 days??

    asked on February 20, 2008
  94. MATH


    asked on February 20, 2008
  95. MATH


    asked on February 20, 2008
  96. science

    I'm studying minerals..I understand that if molten rock cools slowly undergound, then large mineral cystals start forming. AND if that rock cools quickly at the surface, small cystals form. My ? is ..sometimes rock has both large and small mineral crystals

    asked on January 23, 2008
  97. social studies

    In most countries, what is the main responsibility of the government to create?

    asked on October 29, 2007
  98. pre-cal

    find the value(s) of x for which f(x)=g(x). f(x)=x^4-2x^2,g(x)=2x^2

    asked on August 28, 2007
  99. Calculus AP - Volume of Revolution

    Hi. I have a few calculus problems that I have to do using the washers and shell method to find out what the volume of the graph rotated is. I'll post one question at a time with my work. The problem is, I should be getting the same answer for the problem

    asked on March 5, 2007
  100. Physics Problem - Please Help!

    Okay, here's the problem: During a football game, the quarterback rolls out to his right with two huge linebackers in close pursuit. An instant before the linebackers bury him at the 50 yard line (46-m), he releases a towering pass down the sideling. The

    asked on November 5, 2006