sidney

Popular questions and responses by sidney
  1. help

    Methane, CH4, burns in oxygen gas to form water and carbon dioxide. What is the correct balanced chemical equation for this reaction? A. CH4 + O → H2O + CO2 B. CH4 + 4O → 2H2O + CO2 C. CH4 + O2 → H2O + CO2 D. CH4 + 2O2 → 2H2O + CO2

    asked on October 9, 2015
  2. LA

    1. What is the most likely explanation for the poet's ending "Miracles" with this line? What stranger miracles are there? (1 point) He wishes to tell the reader that miracles are strange occurrences. He wishes to tell the reader that he has described all

    asked on February 15, 2019
  3. Physics

    A Ferris wheel is 60 meters in diameter and rotates once every 12.5s. what is the ratio of a person's apparent weight to her real weight (a) at the top, and (b) at the bottom?

    asked on October 23, 2013
  4. physics

    A billiard ball rolling across a table to the right at 2.2 m/s makes a head-on elastic collision with an identical ball. The mass of a billiard ball is 36 g. If the second ball is initially at rest, what is the velocity of the first ball after the

    asked on October 12, 2011
  5. physical science

    why a purple flower appears purple when white light shines on it.

    asked on October 22, 2015
  6. physical science

    hermal conductors don’t have to be hot to transfer heat. According to Ch.16, explain a situation when an ice cube would still transfer heat to another object it is in contact with.

    asked on October 21, 2015
  7. phyical science

    Boyle’s law states that the volume of a gas is inversely proportional to its pressure if the A. temperature and number of particles are constant. B. temperature reaches absolute zero. C. number of particles decreases. D. temperature and number of

    asked on October 11, 2015
  8. math

    There are two positive numbers that can be inserted between 3 and 9 such that the first three are in geometric progression while the last three are in arithmetic progression. Find the sum of those two numbers.

    asked on February 14, 2011
  9. English

    Can someone please help check my answers I'm not the best in English and need help. In the following four assessment items, choose the sentence in which the appositive or appositive phrase is essential to the sentence and punctuated correctly. (1 point) A)

    asked on January 11, 2017
  10. Math

    If you triple a number you will have one half the number of hours in two days. What is the number?

    asked on February 24, 2016
  11. physical science

    how does a heat pump prove the law of conservation of energy?

    asked on October 23, 2015
  12. Calaulus

    A farmer is planting a small orchard. He is advised that if he plants up to 60 trees of a particular type, average harvest from each tree will be about 120 kg, but for each additional tree planted the expected yield will go down by an average of 2 kg per

    asked on April 29, 2018
  13. Calaulus

    A farmer is planting a small orchard. He is advised that if he plants up to 60 trees of a particular type, average harvest from each tree will be about 120 kg, but for each additional tree planted the expected yield will go down by an average of 2 kg per

    asked on April 28, 2018
  14. algebra

    your class is planning a field trip to the amusement park. childrens tickets cost 20 and adult tickets cost 25, the total amount of money available is 1000.let c represent the number of childrens tickets and a represent the number os adult tickets. write

    asked on January 9, 2017
  15. History: Constitution

    Help on writing thesis: Would you have been a Federalist or Anti-Federalist? Explain your response using specific information about the ratification of the Constitution, the Bill of Rights, the Articles of Confederation, the size of the nation, and power

    asked on March 19, 2016
  16. Math

    Nicole deposited $2,000 at 6% simple interest. How long will it be before she has $2,600 in her account? F. 4 Years G. 5 Years H. 6 Years J. 7 Years

    asked on February 25, 2016
  17. Math

    At Jefferson School, both 6th grade & 7th grade classes take a math test. The average score for the 6th grade is 80 and for the 7th grade is 90. If there are twice as many students, in the 7th grade as there is in the 6th grade, what is the average test

    asked on January 14, 2016
  18. PLEASE HELP

    2. If the scientists only performed 1 experiment but it supported their hypothesis, why can it not be considered a theory?

    asked on October 21, 2015
  19. economics

    Explain using a diagram the effect of the sugar price rise on sales of bakery products.

    asked on April 11, 2010
  20. Government

    Can someone please check my answer for me I'm having trouble on my government practice test. Which of the following is an example of checks and balances? A) Congress can override a presidential veto by two-thirds veto in each house. B) The legislative and

    asked on January 15, 2017
  21. Chemistry

    I am having trouble on a chemistry question for my study guide I have researched it and can't get an answer I understand can someone please help me? Describe what happened when an Ag+ combined with Na2CO3. What does this indicate?

    asked on January 12, 2017
  22. Chemistry

    What is the pH of a 0.05 M solution of acetic acid knowing that it was 2% ionized

    asked on May 28, 2016
  23. Chemistry

    Calculate the pH of a solution prepared by dissolving 10.0 g of tris(hydroxymethyl)aminomethane ("tris base") plus 10.0 g of tris hydrochloride in 0.250 L of water. (a) What will be the pH if 10.5 mL of 0.500 M NaOH is added?

    asked on May 28, 2016
  24. Chemistry

    Given 100 mL of pure water at 40C, what volume of a solution of hydrochloric acid, with a density of 1.175 g/mL and containing 34.4% HCI by weight, could be prepared?

    asked on May 22, 2016
  25. Math

    The circumference of a circular stage is 157 feet. If Chris paints the stage at a rate of 400 square feet per hour, how long would it take to the nearest hour, for Chris to paint the entire stage?

    asked on March 17, 2016
  26. Math

    A new car typically loses 20% of its initial value during the first year. During the second year, the car loses 15% of its value after the first year. Find the value of the car after the first year and after the second year.

    asked on March 17, 2016
  27. Math

    Scott started to read a novel. He read 21 pages a day. After 7 days, he had 5/8 of the book left. How many pages are there in the book?

    asked on February 25, 2016
  28. Math

    Wanda wants to have a test average of 90 her four science tests. On the first three tests, she got scores of 84, 96, and 85. What does she need on her last test to reach her goal?

    asked on February 25, 2016
  29. Math

    On a roadmap, the distance between two cities is 8.6 centimeters. What is the actual distance if the scale on the map is 2 centimeters to 50 miles? A - 25 miles B - 215 miles C - 430 miles D - 860 miles

    asked on February 25, 2016
  30. Math

    Scott started to read a novel. He read 21 pages a day. After 7 days, he had 5/8 of the book left. How many pages are there in the book?

    asked on February 24, 2016
  31. Math

    There are 28 7th graders in Ms. Thomas's homeroom. Seven of the students are absent today. What percent of the class was absent?

    asked on February 18, 2016
  32. Math

    Adriana opens her own book store. She sells a hard cover book for $18 and a paperback for $8. Comic books cost $6.50. Adriana's goal is to earn no less than $50. How many comic books must she sell?

    asked on February 18, 2016
  33. Math

    Two numbers are in the ratio 20:12. Their sum is 160. What are the two numbers?

    asked on February 16, 2016
  34. Social Studies

    Why does Ida B. Wells write under the pseudonym ''Iola'' for her editorials?

    asked on February 15, 2016
  35. Math

    To promote the launch of a new Cadbury's chocolate bar, they are offering a ''buy four, get one free,'' deal. If each chocolate bar costs thirty cents, how much would ten chocolate bars cost?

    asked on February 11, 2016
  36. Math

    A turkey weighs 40 pounds plus half of its weight. What does it weigh?

    asked on February 11, 2016
  37. Math

    The three Smith children have a combined age of 50. The youngest is half as old as the oldest. Ten years ago, the oldest was 7 times as the youngest. How old were the children ten years ago? (3 answers) I don't know if this is correct, can you help?

    asked on January 14, 2016
  38. chemistry 101

    The value of kp at 20°c for the reaction 2NO(g) + Cl2(g) 2NOCl(g) is 1.9x10^3 atm-1 calculate the value of KC at the same temperature.

    asked on December 4, 2015
  39. American History

    What caused President Richard Nixon to act on environmental issues? A. Nixon had always been an environmentalist. B. The environmental protection movement was supported by public. C. The Republican Party supported environmental protections. D. Smog in

    asked on October 22, 2015
  40. physical science

    why the speed of sound is faster in solids than in gases.

    asked on October 21, 2015
  41. PLEASE HELP

    when an ice cube would still transfer heat to another object it is in contact with.

    asked on October 21, 2015
  42. physical science

    Explain how the snowboarder can have both kinetic and potential energy at point B.

    asked on October 21, 2015
  43. PLEASE HELP

    13. The picture is a model of a nitrogen atom. What is incorrect about the atomic orbital arrangement of electrons in this model?

    asked on October 21, 2015
  44. PLEASE HELP

    How much time will it take a car travelling at 88 km/hr (55 mi/hr) to travel 500km?

    asked on October 20, 2015
  45. Computer litericy

    where did the internet originate?

    asked on October 12, 2015
  46. phyical science

    Which of the following phase changes is an endothermic change? A. condensation B. vaporization C. deposition D. freezing

    asked on October 11, 2015
  47. phyical science

    Which of the following is NOT a pure substance? A. milk B. oxygen C. water D. carbon dioxide

    asked on October 11, 2015
  48. help

    Which two of Harding’s cabinet members worked hard to achieve advancements specifically for businesses? A. Andrew Mellon and Albert Fall B. Charles Forbes and Harry Daugherty C. Andrew Mellon and Herbert Hoover D. Herbert Hoover and Charles Forbes

    asked on October 5, 2015
  49. help

    Which political party rose to power in Germany during the 1930s? A. the Communist Party B. the Nazi Party C. the Fascist Party D. the Socialist Party

    asked on October 5, 2015
  50. American History

    The mixing of plants, animals, and microorganisms that occurred after Europeans arrived in the Americas is known as A. the Columbian Exchange. B. global interdependence. C. triangular trade. D. global mixing.

    asked on October 1, 2015
  51. vocabullary

    Alienate and Estrange A. Synonyms B. Antonyms C. Neither

    asked on September 18, 2015
  52. algebra

    Tickets are being sold for a theater. Cost for students: 2 dollars. Cost for other people: 5 dollars. The total amount of tickets sold: 250. Total amount of money made: 950. How many of the tickets were sold to the students? To the others?

    asked on December 21, 2014
  53. Geometry A

    Which line has a slope of 3 and passes though the point (-6, -4)?

    asked on February 25, 2014
  54. Math

    Martin wants to make a scatter plot comparing the temperature outside with the number of people at the city swimming pool. Which of the following trends would most likely represent the data? A/There is no relationship between the temperature and the number

    asked on June 26, 2013
  55. Chemistry

    Express each result to the correct # of significant figures 1. 8.27 x (4.987 - 4.96) 2. (9.5 + 4.1 +2.8 +3.175)/4 3. (9.125 - 9.02) / 9.125 x 100

    asked on August 31, 2012
  56. Senior Project on Japanese

    I'm trying to do a senior project on japanese language but it has to be something specific about the language according to my senior project techer. any ideas?

    asked on March 21, 2012
  57. physics

    A 48.2 kg girl is standing on a 129 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.66 m/s relative to the plank. What is

    asked on October 12, 2011
  58. physics

    A 1970 kg car traveling at 13.8 m/s collides with a 2960 kg car that is initally at rest at a stoplight. The cars stick together and move 1.91 m before friction causes them to stop. Determine the coefficient of kinetic friction between the cars and the

    asked on October 12, 2011
  59. Biology

    I'm not sure how to answer one of my homework questions. SraJMCGIN was nice enough to direct me to a site but I already had been there. My teacher kinda of indicted it was true but I don't know how it can- could someone take a second look, please at this

    asked on October 9, 2011
  60. Biology-9th grade

    I'm not sure how to answer one of my homework questions. Is one function of the alveoli to filter out dirt and pollen before it reaches the lung and why or why not. I don't think it is because the alveoli are used to oxgenate the blood, correct. I don't

    asked on October 9, 2011
  61. FRENCH

    In French, what does agreement mean again? Cause for example I put down this: Ils ont marches sur l'Avenue Champs-Elysees. But there shouldnt be an S after marche because theres no agreement with avoir. Could I please know what agreement means again?

    asked on March 11, 2011
  62. FRENCH

    About the Passe Compose, could I get a few notes on that please. I would also like notes on the Terminology.

    asked on March 10, 2011
  63. FRENCH

    Okay so for this question Qu'est-ce que tu viens de faire aujourd'hui? Je viens de parler au Francais. D'après toi, est-ce qu'il faut être content(e)? Oui, d'après moi, il faut être riche pour être content. Est-ce que tu as une amie qui est souvent en

    asked on March 9, 2011
  64. FRENCH

    Conversation Culturelle Étienne is waiting for his friend Aurélie at the exit of the Champs-Élysées - Clemenceau métro station. They are going to see an art exhibit at the Grand Palais. Étienne: Enfin! J'ai attendu une demi-heure. Aurélie:

    asked on March 8, 2011
  65. FRENCH

    SraJMcGin if you're not busy right now, could I post a few of my french questions?

    asked on March 7, 2011
  66. French HELP

    I have to write a postcard in French. Im in grade 10, so my vocab isn't really up there. I have to include the date, tell where I am, and what celebration it is and how I like it. I have to describe the people I am with - Use adjectives. And report on the

    asked on March 4, 2011
  67. FRENCH- BANGS

    Bangs really confuse me:( Could I get a few notes on them please, I already checked the internet. B stands for beauty A stands for age N stands for number G stands for goodness S stands for size These are all adjectives, what confuses me is that are they

    asked on February 26, 2011
  68. math

    Solve for x: [Sixth root of 27]+[cube root of x] = 6/(3-[square root of 3]

    asked on February 14, 2011
  69. Language arts 7th grade

    how would you write a 2:2 Jane Schaeffer paragraph?

    asked on December 15, 2010
  70. science

    Why does Mars' appear fainter than Venus, as seen from Earth?

    asked on October 10, 2010
  71. math

    what is 589+96=

    asked on July 25, 2010
  72. Science

    What are The Parts In the Mouth Below the maxilarity teeth look like holes!!!!!!!!!!! PLEASE PEOPLE I REALLY NEED YOUR HELP!!!!!!!!!

    asked on January 20, 2010
  73. books

    Romeo Juliet Comic Project

    asked on May 14, 2008
  74. math

    5 (6-2x) = -3 (-2x + 6) whats the value of x in each (has to be the same)

    asked on March 25, 2008
  75. Social studies

    I need info on Granary Burial Ground in Boston. MA. Something other than who is buried there. Thank you for using the Jiskha Homework Help Forum. In addition to the victims of the Boston Massacre, the first site is just in case you'd like to know who is

    asked on April 18, 2007
  1. Government

    I change my answer to A I googled it and read on checks and balances just now and about over riding a presidential veto

    posted on January 15, 2017
  2. English

    Thank you so much Reed I am glad I came on for help I appreciate you explain to me why that was as well now I understand!

    posted on January 11, 2017
  3. Chemistry

    Thank you so much! you save my life

    posted on May 28, 2016
  4. Chemistry

    yes! Given 100 mL of pure water at 4°C, what volume of a solution of hydrochloric acid, with a density of 1.175 g/mL and containing 34.4% HCI by weight, could be prepared?

    posted on May 22, 2016
  5. History: Constitution

    Thanks

    posted on March 19, 2016
  6. Math

    I forgot to add that I'm sorry! I meant t o type Find the value of the car ($18,000) so it's actually A new car typically loses 20% of its initial value during the first year. During the second year, the car loses 15% of its value after the first year.

    posted on March 17, 2016
  7. Math

    It will be 5 years. Correct?

    posted on February 25, 2016
  8. Social Studies

    She wrote about violent crimes against African Americans

    posted on February 15, 2016
  9. Math

    Thanks! Makes sense now.

    posted on February 11, 2016
  10. Math

    40 + (0.5 * 40) = 60 pounds because 0.5 * 40 = 20 and 20 + 40 = 60 Correct?

    posted on February 11, 2016
  11. Math

    Ok

    posted on January 14, 2016
  12. physics

    X=vt T=0.2/40=0.005s A=v/t=40ms^-1/0.05s=8.0*10^3ms^-2 F=ma=0.5kg*8000ms^-2 =4.0*10^3N

    posted on January 3, 2016
  13. Science

    I think its ability to react

    posted on December 4, 2015
  14. American History

    ok

    posted on October 23, 2015
  15. math

    hello can someone please explain and help me with this problem

    posted on October 22, 2015
  16. American History

    whats the answer

    posted on October 22, 2015
  17. physical science

    what is the answer

    posted on October 22, 2015
  18. PLEASE HELP

    thanks u so much

    posted on October 21, 2015
  19. PLEASE HELP

    physical science

    posted on October 21, 2015
  20. PLEASE HELP

    how do i find that

    posted on October 21, 2015
  21. Grammar

    acting with ill-considered haste or boldness.

    posted on October 21, 2015
  22. PLEASE HELP

    i have been

    posted on October 21, 2015
  23. PLEASE HELP

    idk how to put a pic on here

    posted on October 21, 2015
  24. Physical Science

    help

    posted on October 21, 2015
  25. phyical science

    whats the answer

    posted on October 11, 2015