Questions Asked on
September 19, 2018

  1. chemistry

    For the diprotic weak acid H2A, Ka1 = 2.8 × 10-6 and Ka2 = 5.8 × 10-9. What is the pH of a 0.0700 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution?

    asked by ggigignune
  2. science

    4. Which of the following is the primary control of how much water vapor the air can hold? a. Number of particulates present b. Temperature of the air c. Specific heat of water d. Amount of dry gases present answer: b 6. Which of the following would cause

    asked by ~
  3. science

    1. During a clear, calm day, the relative humidity would tend to _______ from sunrise to early afternoon? a. Increase b. Decrease c. Remain constant d. It is impossible to determine answer: b 2. In which of the following situations is the amount of water

    asked by are these correct?
  4. math

    Some friends played a board game. During the​ game, one unlucky player had to move back 9 spaces 7 turns in a row. Find a number to represent that​ player's movements for those 7 turns. The number nothing represents that​ player's movements for those

    asked by juju
  5. Tech Business

    PLEASE HELP!! I'm so behind. Are my answers correct? This is my last class to pass to graduate, and I have a hard time with it. 1. Which of the following Web 2.0 tool can aid in searches using key words? A) Blogging B) Podcasting C) Tagging(My answer) D)

    asked by Kristen
  6. calculus2

    integral (xsin^2(x))dx

    asked by mi
  7. History

    I need help with finding out the reasons the declaration of Indapendence was written, can someone help me?! mayeb give meh links

    asked by Becki!
  8. Physics A2 level Student

    When I came new to As I was given these as homework after we did easy practise questions in class. I find this topic and all its worksheets easy except this one for some reason. I got every single one of these questions wrong and struggled and still do

    asked by Help needed
  9. Chemistry

    What is the difference between a commercial Ni-Cd battery and a galvanic cell system of Ni-Cd with nickel chloride concentration of 0.05M and cadmium nitrate concentration od 0.01M

    asked by Nic
  10. Physics

    A boy and a man carry uniform rod of length l horizontally in such a way that the boy get 1/4of the load.if the boy is at one end of the rod the distance of the fan from the other end is

    asked by Anonymous
  11. Physics

    an athlete executing a long jump leaving the ground at an angle of 30° and travels 8.9m .what was the take off speed?

    asked by Kunal
  12. Science

    You need to make a 150mM solution of NaCl (MW = 58). How much NaCl do you need to make 1L (in moles and in grams)? If you b need to make 250mL how much NaCl would you need in grams?

    asked by Tom
  13. Social Studies

    1. How were the Greeks able to defeat the Persians? A. The Persian army and navy were too weak to win. B. The Spartans fought alone without the help of Athens. C. Sparta and Athens came together to defeat the Persians. D. Athens fought alone without the

    asked by Rosie Lisette
  14. Career. 8th PLZ GIVE ANSWERRS

    1. You need a college degree to enter the military True False 2. Which of the following is an elected office? lawyer police officer paramedic state representative 3. All people in government or public administration are elected. True Flase 4. Inspectors

    asked by Sophie
  15. social studies HELP

    Prior to the destruction of the Second Temple, which of the following areas of the world contained Diaspora communities? A. Central Asia B. Great Britain C. Japan D. Southern Africa

    asked by bob
  16. Math Statistacs

    U2 is an Irish band that has been popular for over three decades. The lengths of 80 of their songs were selected at random and are listed in the table below. Lengths of Randomly Selected U2 Songs. ? (seconds) 382 222 214 338 310 559 334 225 177 189 278 300

    asked by Matt
  17. Biology

    Which of the following statements best explains how the cell membrane regulates what goes in and out of the cell? A. the membrane allows only certain molecules to move into the cell B. the membrane destroys most molecules so that they do not enter the cell

    asked by Behind In School
  18. Science

    All cells regardless of size share all of the following characteristics except... A. have a cytoplasm B. have a nucleus C. have a plasma membrane D. have ribosomes

    asked by Maygen
  19. science

    a child standing in front of high cliff make a loud sound, and hears an echo after 30 seconds. Calculate how far is the child from the cliff?

    asked by deng
  20. Science

    A new cancer fighting agent was discovered in a rare tropical plant. In animals, the substance prevents mitosis by disrupting the formation of microtubules. If the microtubules are not working properly, which of the following is specifically affected? A.

    asked by Failing Science
  21. ss

    What belief did Zoroaster teach? A. He taught that the universe is dominated by good, not evil. B. He taught that the universe is governed by natural laws, not gods and goddesses. C. He taught that the universe is locked in an eternal struggle between good

    asked by Vexento
  22. math

    How do inverse operations help solve algebraic equations

    asked by hunter
  23. History .

    What prompted the Egyptians to build the pyramids? please help me.

    asked by dessy .
  24. ss

    Which of the following are characteristics of Homo sapiens?

    asked by vell
  25. Ed Tech and Online Learning

    What is the purpose of a title slide? A. to add titles to each slide B. to introduce the presentation C. to describe the resolution of a presentation D. to provide an outline of the presentation

    asked by Sarah Gonzole
  26. Biology

    What four substances are recycled during photosynthesis and respiration? I’d come up with an answer but I’m confused... Part b: What is one component in photosynthesis that is not recycled and must be constantly available? Thank you.

    asked by Ana
  27. Language Arts 6 A

    why is the weather important in the exposition of stray

    asked by vell
  28. HOME ECONOMICS

    1)what is home economics. 2)Branches of home economic & explain.

    asked by ABASI-FREKE
  29. Biology

    Why must the test tubes be thoroughly cleaned and dried when one part of the procedure is completed, before starting the next part of the procedure?

    asked by Melody
  30. Stats

    A random sample of 50 four-year-olds attending day care centers provided a yearly tuition average of 3987, with a population standard deviation of 630. Find the 90 percent confidence interval of the true mean. What is the upper bound of this interval?

    asked by Kyle
  31. social studies

    What was the main way Charles V and Philip II maintained Spanish power in Europe? A. by making treaties with neighboring countries B. by avoiding involvement in other countries' affairs C. by waging war against their enemies D. by creating an alliance with

    asked by cloe
  32. Algebra

    5x=5 whats x?

    asked by Yeet
  33. history

    How did African Americans help strengthen the Republican Party in the south?

    asked by help pls!!!!!!!!
  34. Math

    The value of y vaires directly with x, and y=18 when x=12. Find y when x=60. y=90 y=42**** y=1.5 y=40 Am I right?

    asked by Anonymous
  35. Algebra1

    What is the algebraic expression for the following word phrase: the sum of 8m and 3? A. 8m-3 B. 8m+3 C. 8m/3 D. 11m My answer is D, but if I'm wrong, could you help and explain why?

    asked by Lolli
  36. Life science

    What is the term used to indicate the variety of living organisms on earth?

    asked by Nozipho
  37. Life science

    What is the the biological term used to explain carbon based minerals such as oil and coal which release heat energy during combustion?

    asked by Nozipho
  38. Philosphy (LOGIC)

    Given that A1, ... An are completely incompatible hypotheses, from the fact that the conditional probability of A1 given evidence E is greater than the conditional probability of any other Ai given E, we can infer that: A. The argument A1; therefore E is

    asked by Sally
  39. physics

    A gardener mows a lawn with an old-fashioned push mower. The handle of the mower makes an angle of 30 ∘ with the surface of the lawn. If a 50.0-N force is applied along the handle of the 15-kg mower, what is the normal force exerted by the lawn on the

    asked by Ryan Garrett
  40. Physics

    What is the acceleration of a mechanical part that moves from 0 to 10 m/s in 1 s? a.10 m/s b.20 m/s c.10 m/s2^

    asked by Angel
  41. Social studies

    What was the supreme court’s decision in the 1896 plessy v. Ferguson case?

    asked by Anonymous
  42. Math

    What is the simplified form of the following expression? 7m^2 + 6.5n - 4 + 2.5m^2 - n A. 9.5m^2 + 1.5n B. 4.5m^2 + 1.5n C. 1.5m^2 - 4.2n D. 9.5m^2 -1.5n*****

    asked by Jordan
  43. social studies

    What is the role of the government in a mixed economy?

    asked by need helppp
  44. Ap physics

    Two identical boxes with mass 10kg sit on the horizontal floor of a truck. There is friction between one of the boxes and the floor, and no friction between the other box and the floor. The two boxes are tied together with a massless string. The truck

    asked by Tyger2020
  45. Check my work

    1. Which of the following jobs is a school career? a. architect b. instructional coordinator c. office manager d. teacher***

    asked by Sid.V
  46. Revolutionary Era Practice

    Why was it important for women to take on the work of the men who were fighting in the revolution? I think it's A. Can someone p!ease check my answer

    asked by Pickering
  47. Check my work

    2. Which of the following jobs is a career in educational support? Select two that apply a. bus driver b. librarian*** c. receptionist d. statistician*** e. machinist

    asked by Sid.V
  48. SS

    What contributed to the initial spread of Islam in the 600s and 700s? Why were Muslim warriors often successful? Besides warriors, who else spread the Muslim faith? How did early Arab Muslims treat people of other faiths? I need help with the answers!!!

    asked by HELP!!!
  49. Physics again

    The following question refers to the following expression for a particle's position: X = 3t^2 - 4t + 3 What is the particle's acceleration after 3 seconds? I keep getting 1 m/s2 but that's not an answer choice. I found instantaneous velocity at t=0 (3 m/s)

    asked by anonymous
  50. Social studies

    What was Alexander Hamilton’s main reason for insisting that all the nation’s debts must be paid in full?

    asked by ?
  51. Math

    What is the value of x/yz if x= -2, y= -3, and z= -4? A. 6 B. -6 C. 1/6 D. -1/6 I have no idea how to work this out. Can someone walk me through this?

    asked by Jordan
  52. Language and Composition

    You will be healthy if you eat vegetables. Eating vegetables is the only way to be healthy. Begging the question Appeal to authority Hasty generalization (my guess) Appeal to popularity

    asked by Babygirl
  53. Math

    Given that exterior angle of a regular hexagon is x, find the size of each interior angle of the hexagon. What is the correct answer for this question?

    asked by Kd
  54. Math

    In the figure AB = 11cm, BC = 8cm, AD = 3cm, AC = 5cm and DAC is a right angle. The size of ADC; The size of ACB; The area of the quadrilateral ABCD.

    asked by Kd
  55. Math

    19^-4 ?

    asked by Ughjezzydut
  56. Language and Composition

    Despite the women’s movement in the 70s, women still don’t receive equal pay for equal work. Obviously, any attempt to change the status quo is not going to succeed. Appeal to pity Non sequitur Appeal to authority Hasty generalization

    asked by Babygirl
  57. SS

    What helped discourage invaders from trying to take over parts of Arabia? Where was Muhammad born? What did Muhammad say he had received from the angel Gabriel? What is the holy book of Islam? Why do Muslims give part of their wealth to charity? Who

    asked by HELP!!!
  58. Spanish

    PLEASE HELP ME! Will make as brainliest! Much appreciated. 1. A celebration in the countryside in which family and friends get together in Cuba is known as a _______. (1 point) Habana Vieja guateque campesino trovadores cocotaxi 2. La Habana Vieja's annual

    asked by Help
  59. History

    What happened when the Spanish found the French colony. A. They engaged the French settlers in warfare and killed many of them B. The gave the land to the French. C. They joined forces with the French. D. They were motivated to settle in other areas of

    asked by I need help
  60. English

    What other types of writing is similar to the autobiographical essay 1.an email sent to a friend that tells her about an event in your life 2.a book report you wrote for school 3.a postcard sent to your family while you are traveling. 4. A multiple choice

    asked by Maddie
  61. Algebra 2

    Which set of ordered pairs in the from of (x,y) does not represent a function of x? {(1,1.5), (2,1.5), (3,1.5) (4,1.5)}(my guess) {(0,1.5), (3,2.5), (1,3.3), (1, 4.5)} {(1,1.5), (-1,1.5), (2,2.5), (-2,2.5)} {(1,1.5), (-1,-1.5),(2,2.5),(-2,-2.5)}

    asked by Babygirl
  62. science

    Hey, I'm a 6th grade connexus student, I just found this website by accident, and is this like a question learning/answers? I'm just asking

    asked by Ivan Catz N Dogz
  63. Science

    Two dogs run down a hill at the same speed toward a pile of leaves at the bottom. The dalmatian has a mass of 29 kilograms, and the poodle has a mass of 5 kilograms. Which dog has more kinetic energy as it runs down the hill and collides with the pile of

    asked by Anonymos
  64. Algebra 2

    What is f(-5)if f(x) = |2x - 1| + 10? 21 19 -1 -21 I have no idea how to solve this.

    asked by Babygirl
  65. Science

    Two children race each other to a playground. Which of the following best describes the outcome of the race? A. The loser had the fastest speed during the race. B. The loser had the most kinetic energy during the race. C. The winner had the slowest speed

    asked by Anonymos
  66. Science

    Two buses are stopped side-by-side at a stoplight near the top of a hill. Bus A has a larger mass than Bus B because more people are riding on it. When the light turns green, both buses begin moving down the hill. How is energy being changed from one form

    asked by Anonymos
  67. Art

    So I have to do a art project where I have to create a painting or drawing that has a story in it. What should I draw/paint? Any ideas?

    asked by youwillneverknowmyname
  68. Math

    If he divides his land into square fields that are 1/3 mile long and 1/3 mile wide how many fields will he have

    asked by Leah
  69. Math

    Find two numbers the exact answer is between. 4×94

    asked by Hilton
  70. Chemistry

    A mixture of salt way in 13.78g contains CACO3 with gaseous impurity it was heated to a constant mass and the resolve was reacted with H2SO4 to form 6.78g of CASO4. Calculate the percentage purity of the calcium trizoncarbonate four I'm the mixture (ca=40,

    asked by Ominyi John David
  71. English

    How do I end my essay quickly? its supposed to be no more than 3 pages long and I have only enough space for one and a half more paragraphs. I don't want to delete anything because its all really good. Its about social media creating jobs and I feel like

    asked by community college girl
  72. science

    metric system: lower case letters are used for prefixes that include units that are....?

    asked by lauren
  73. Math

    Find the missing term ___,180,30,5 A) 1080 B) 900 C) 300 D) 210 Evaluate the expression 4(x+8) for x= 6 A) 14 B) 32 C) 48 D) 56 The cost of a school banquet is $75+30n, where n is the number attending. What is the cost for 53 people? A) $1,590 B) $4,005 C)

    asked by Halp plzzzzzzzzzzzz
  74. Math

    Kelly subtracted 2.3 from 20 and git 17.7 explain why this answer is reasonable

    asked by Vanna
  75. Math

    Jennifer had $24 to spend on five pens.after buying them shr had $14. How much did each pen cost

    asked by Dulce
  76. English Literature

    Which is the appositive in the sentence below? Our neighbor, Mrs.Eddy, is an editor. a. Mrs. Eddy*** b. Our c. editor d. neighbor

    asked by Anonymous
  77. Math

    If the area of the base of Cheops pyramid is 570,025 ft squared what is the length of one of the sides of the ancient structure

    asked by Szahara
  78. science

    1. During a clear, calm day, the relative humidity would tend to _______ from sunrise to early afternoon? a. Increase b. Decrease c. Remain constant d. It is impossible to determine answer: b 2. In which of the following situations is the amount of water

    asked by are these correct?
  79. Math

    Show that f is a function one-to-one, if and only if f(x) = 0 for x=0. I cannot solve this demonstration, I know that if both elements are the same and their functions are the same, then is one to one, but in this case they only show me one element. Please

    asked by Tatiana
  80. Social Studies

    How does opportunity cost affect people's wants and needs? A.It changes the supply and demand of goods. B.It requires them to make a choice. ***** C.It requires them to be producers and consumers. D.Opportunity cost does not impact wants and needs. Please

    asked by michelle :)
  81. English

    Which of the following identifies the underlined phrase in the below sentence? Coach Mack's basketball team from 2011 is by far his best group of athletes. (Coach Mack's basketball team from 2011 is underlined) a. complete subject*** b.complete predicate

    asked by Anonymous
  82. ED TECH FOR CONNEXUS

    I NEED HELP WITH THIS I FEEL LIKE I KIND OF GOT THE RIGHT INFO BUT IM NOT SURE SO CAN YOU EITHER ANSWER THE QUESTION OR GIVE ME LINKS TO WEBSITES THAT MIGHT HELP!! What were the major events in Alexander the Great’s life?

    asked by CONNEXUS STUDENTS
  83. Math

    Find the vertical and horizontal asymptote of this Hint there are two HA and one VA (√16^x6+9)/9x^3+4 The square root sign is suppose to apply to everything in the parenthesis

    asked by Anonymous
  84. Math

    Let f(x)=(x^-9)/x-3 where x cannot equal 3 and f(x)=2x where x =3 Determine is f(x) is continuous at x=3 How do we know?

    asked by Anonymous
  85. English

    "As no more electrical fire can be thrown into the top of the bottle" Is this considered personification? I'm writing a report on Benjamin Franklin's letters sent to Peter Collinson, and am having a hard time identifying some important literary elements

    asked by Rylee
  86. Physics

    A given force F→ is located in the yz-plane. It has a magnitude of 18N and is directed at a 30.0° angle clockwise from the positive y-axis. (a) Describe F→ using polar notation. (b) Describe F→ using its y- and z-components. (c) Describe F→ using

    asked by sarah
  87. weather

    1. Which of the following is the primary control of how much water vapor the air can hold? a. Number of particulates present b. Temperature of the air c. Specific heat of water d. Amount of dry gases present answer: b 2. Which of the following would cause

    asked by ~
  88. Childhood Education

    There is a fine line between guiding children's problem solving and interfinf with their self discovery. I am think f

    asked by Betty
  89. Math

    the figure AB = 11cm, BC = 8cm, AD = 3cm, AC = 5cm and DAC is a right angle. The size of ADC; The size of ACB; The area of the quadrilateral ABCD. tan ADC = 5/3 11^2 = 5^2+8^2 - 2*5*8 cos ACB Now you can figure the areas of the triangles ACD and ACB, and

    asked by Kd
  90. Physics

    An object is located at the point (−3.00m,4.00m,0.00m). A position vector connects this object to the origin. Find the magnitude of the position vector and the angle it makes with the positive x-axis. I know the magnitude is 5.00m, how do I find the

    asked by sarah
  91. EDUCATION TECHNOLOGY

    I NEED HELP WITH THIS I FEEL LIKE I KIND OF GOT THE RIGHT INFO BUT IM NOT SURE SO CAN YOU EITHER ANSWER THE QUESTION OR GIVE ME LINKS TO WEBSITES THAT MIGHT HELP!! What were the major events in Alexander the Great’s life? asked by CONNEXUS STUDENTS today

    asked by CONNEXUS STUDENTS
  92. math

    The equation y = 12x describes the amount of money Louis earns, where x is the number of hours he works and y is the amount of money he earns. The table shows the amount of money Carl earns for different numbers of hours worked. Carl’s Earnings Time (h)

    asked by David
  93. Geography

    Here's a few questions that I need help with. I included some answers to see if they are right. 1. What mathematical term defined the size across something being analyzed. -Analytic 2. Give example of different analysis sizes. I need to know the answer of

    asked by Imanolex
  94. Algebra

    Doris invested some money at 7% and some money at 8%. She invested $6000 more at 8% than she did at 7%. Her total yearly interest from the two investments was $780. How much did Doris invest at each rate?

    asked by Chartel
  95. algebra

    Solve for x: x – 4(2x – 1) ≥ 2(x – 1)

    asked by Mahnoor
  96. Math

    How would I figure out the unit rate given only the below equation: y=0.6x?

    asked by Patrick
  97. World History

    Describe the impact of the Agricultural Revolution on the formation and development of permanent human settlements and technological advancements. If you could provide some websites/articles for me to do my research that would be great. Thank you :)

    asked by Taryn H.
  98. World History

    Describe the effect of the Agricultural Revolution on the creation of new government and laws in (Ancient Egypt, Nubia, Babylon, Greece or Rome). If you could provide some websites/articles for me to do my research that would be great. Thank you :)

    asked by Taryn H.
  99. World History

    Describe the effect of the Agricultural Revolution on the creation of new religion and cultures in (Ancient Egypt, Nubia, Babylon, Greece, or Rome). If you could provide some websites/articles for me to do my research that would be great. Thank you :)

    asked by Taryn H.
  100. Math

    Hello. If I have the following table: Time(x) 18 27 72 81 Distance (y) 8 12 32 36 How would I create an equation relating the variables in the table? y= Please help. I have never done this before?

    asked by Patrick
  101. Math

    Tamara has 12 coins. One- quarter are dimes the and a one half of a quarters and the rest are Penney. what is the value of tamara money

    asked by Anonymous
  102. math

    The heights of four students in Mrs.Patel's class are 5 1/2 feet, 5.35 feet, 5 4/10 feet,and 5.5 feet.What is the height in the feet of the shortest student written as a decimal?

    asked by lixxy
  103. Texas State History

    At the end of the Spanish rule, which group had the largest population in Texas? A) Peninsulares B) Catholic clergy C) Anglo Americans D) American Indians *** (my answer)

    asked by ILTHSM_
  104. Algebra

    properties

    asked by Duncan
  105. Algebra

    A machining company manufactures washers. The dimensions of the washer are 2cm for the inner circle and 4cm for the outer circle. And the inner and outer radii is positive and negative 2. The range of acceptable values is called the tolerance. Write an

    asked by DJ
  106. Math

    A Canadian goose migrated at a steady rate of 3 miles every 4 minutes. I have to complete the table below. Please help Time(min) 4 8 12 16 20 Distance (mi) 3 How would I figure out the rest of this table? Please help.

    asked by Patrick
  107. physics

    Two identical boxes with mass 10kg sit on the horizontal floor of a truck. There is friction between one of the boxes and the floor, and no friction between the other box and the floor. The two boxes are tied together with a massless string. The truck

    asked by anonymous
  108. Chemistry

    The specific heat of water is 4.184J/gc and that of aluminum is 0.897J/gc which substance will show a larger increase in temperature upon the addition of 100J of heat to 100g the aluminum or the water

    asked by Kishwar
  109. science

    A truck with a mass of 20t has a tractive resistance of 280N/t if the truck travels at a speed 72km/h. Calculate the following. a) The distance 36s. b) The power required for the speed.

    asked by Nqobile
  110. algebra

    solve for g. R=(g*s)/(g+s)

    asked by M
  111. calculus

    Let t be an angle between π and 3π/2, and suppose sec(t)=−2.6. What is tan(t)? Having a hard time with this one..

    asked by sal
  112. Algebra

    -33+m=10

    asked by Duncan
  113. Chemistry

    A compound has the % composition by mass that is 87.8% C and 12.2 % H. What is the molecular formula if it has a molecular mass of 82 g/mol?

    asked by Anonymous
  114. Physics

    A soccer player kicks the ball that travels a distance of 36.0 m on a level field. The ball leaves his foot at an initial speed of (v0) and an angle of 30.0° above the ground. Find the initial speed (v0) of the ball.

    asked by Alina
  115. Physics

    A projectile is launched at an angle of 20.0° above the horizontal. What is its initial speed if it hits a target that is located a horizontal distance of 175 m from the launch point and 10.5 m above the launch level?

    asked by Alina
  116. physics

    if a ball is thrown downward from a roof top 100meters tall and hits the ground in 3 seconds how hard is it thrown?

    asked by allen
  117. SCIENCE

    A bomb of mass 5kg explosed into equal fragment.at what angle these fragments fly apart. ?

    asked by RO MAN
  118. Math

    In the cafeteria 100 milk cartons were put out for breakfast at the end of breakfast 27 remained

    asked by Anonymous
  119. Math

    How do I solve this? This is confusing. Solve the system using matrices. -3x - y - 2z = -389x + 9z = 1172y + z = 16

    asked by Sally123