Lana

Popular questions and responses by Lana
  1. chemistry

    The dosage of technetium-99m for a lung scan is 20 μCi/kg of body weight.How many millicuries should be given to a 65.0-kg patient? (1mCi=1000μCi)Suppose a person absorbed 54mrads of alpha radiation. What would be the dose equivalent in mrems?

    asked on December 5, 2013
  2. chemistry

    Complete the mass balance expression for a saturated solution of Ag2CO3. Note at least one blank is a numeric coefficient. (Note: Ignore any subsequent reactions of Ag .)

    asked on May 19, 2013
  3. chemistry

    Balance the following redox reaction. MnO4 (aq) + Fe (s) --> Mn2+ (aq) +Fe2+ (aq)

    asked on May 11, 2013
  4. Math

    Write an equation for the line in slope intercept form Slope:-2 passing through (-2,8)

    asked on October 1, 2014
  5. ENGLISH 111

    I need a thesis sentence for online dating and traditional dating for a compare and contrast essay

    asked on June 18, 2014
  6. reading

    What is the prefix, suffix, and root for slavery? No prefix Suffix-ery or ry? Root- slave Is my suffix correct, if yes what is the definition?

    asked on February 23, 2016
  7. Physical Science

    A 15 g bullet is fired with a velocity of 200m/s from a 6kg rifle. What is the recoil velocity of the rifle?

    asked on October 7, 2015
  8. business

    is the first one B and the second question A ?? 1.Which one of the following leadership styles could be best characterized by the statement “Let George do it”? A. Contingent C. Democratic B. Laissez-faire D. Autocratic 2. According to the Managerial

    asked on July 5, 2012
  9. math

    given the point (-9,6), determine the points that are symmetric to this point with respect to the x-axis,the y-axis, and the origin, respectively. I know what the points are I just don't know how you figure out what order their in. (9,-6) (9,6) and (-9,-6)

    asked on August 26, 2011
  10. Economics

    Help! which one?! 8. All of the following are types of foreign direct investment (FDI) except _____. a foreign company merges with an existing firm in a less developed country (LDC) a foreign company takes over a firm in an LDC a foreign company enters

    asked on May 29, 2014
  11. Math

    Find the amount in each case. 8% is 56 kg.

    asked on May 13, 2013
  12. math

    i am a multiple of 7 i am also a multiple of 3 my units digit is half my tens digit. what number am i?

    asked on March 29, 2020
  13. Algebra

    the base of a cylinder is a right triangle topped by a 60 degrees sector of a circle, as shown. if the dimensions are in meters and the height of the cylinder is 8 meters, what is the volume of the cylinder?

    asked on September 18, 2015
  14. Economics

    2. If Congress has determined that the budget will not be completed by September 30, it should _____. prepare appropriations bills to be reviewed by the President shut down the federal government pass legislation for emergency funding send a notice to the

    asked on May 27, 2014
  15. chemistry

    Write a balanced nuclear equation for the positron emission of each of the following radioactive isotopes: silicon-26,mercury-188,7737Rb,9345Rh

    asked on December 5, 2013
  16. chemistry

    Calculate Ecell forthe following electrochemical cell at 25 C Pt(s) |H2(g, 1.00 bar) |H + (aq, 1.00 M) || Pb2+(aq, 0.150 M) | Pb(s)

    asked on May 12, 2013
  17. PreCalculus

    I need help with a Matrix Algebra problem A small school has 100 students who occupy three classrooms A, B, and C. After the first period of the school day, half the students in room A move to room B, one-fifth of the students in room B move to room C, and

    asked on December 13, 2011
  18. geometry

    ABCD is a parallelogram. If AB is equal to 2x + 1 and CD is equal to x + 13, find x

    asked on July 14, 2011
  19. Math

    Which property justifies each step? Problem A: (6 + 2)a + 8b = 8a + 8b Problem B: 8a^2 + (8a + a^2) + 7a = 8a^2 + (a^2 + 8a) + 7a Problem C: 8a^2 + (a^2 + 8a) + 7a = (8a^2 + a^2) + 8a + 7a Problem D: (6a + 2a) + 8b = (6 + 2)a + 8b Thanks!

    asked on April 7, 2020
  20. Math

    1. If you flip a fair coin 10 times, what is the probability of a) getting all tails Is it 1/1024? b) getting all heads Is it 1/1024? c) getting at least one tails? Is it 1023/1024? 2. If you roll a pair of fair dice, what is the probability of a) getting

    asked on January 14, 2016
  21. English

    Is it B? What is the main idea of the story of Morte d’Arthur by Sir Thomas Malory? King Arthur creates the ideal kingdom of Camelot. King Arthur is mortally wounded in a battle with his mortal enemy Sir Mordred. King Arthur shows himself to be an unjust

    asked on May 29, 2014
  22. Math

    A rectangle has a width of 10 in and a length of 12 in. A similar rectangle has a width of 15 in. What is the length of the similar rectangle?

    asked on March 13, 2018
  23. consumer math

    Ramon, a sales representative for HP computers, is paid $795 per week plus a commission of 2% on sales. His sales last week were $10,560. Find the amount he pays in Medicare taxes for the week. $29.18 $14.59 $62.38 $145.89

    asked on October 30, 2017
  24. Physics

    I've been stuck on this questions for 2 days A 7.2-kg bowling ball traveling at a speed of 3.5 m/s collides with a 1.2-kg bowling pin at rest. After the collision, the pin moves with a speed of 3.0 m/s at an angle of 60° with respect to the original

    asked on October 22, 2016
  25. Social studies

    which of the following is necessary to propose a new amendment to the Constitution a. approve by a popular vote held in every state b. approve by two thirds of the house and senate c. approve by three quarters of the house and senate d. approve by the

    asked on October 5, 2016
  26. Chemistry

    Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house. Assuming that all the energy given off in the reaction goes to heating up only the

    asked on January 14, 2016
  27. Chemistry- Dr.Bob!

    Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house. Assuming that all the energy given off in the reaction goes to heating up only the

    asked on January 13, 2016
  28. language

    1 from details about blossom in both the first and third haika ,what conclusion can you draw a. the poet feels exeed ingly lonely b. the poet lives in an urbansetting c. the poet injoys the gentle beuty of nature d. the poet enjoys the drama of nature at

    asked on January 11, 2016
  29. Algebra help

    A class 4 truck weighs between 14,000 and 16,000 pounds. What is the weight range in tons? b. If the weight of. Class 4 truck is increased by 2 tons, will it still be classified as a class 4 truck? Explain both thanks

    asked on November 19, 2014
  30. Find the pattern

    Our trip lasted for 12 days we arrived Sunday July 1 and left on Thursday July 12th where we stayed everyday something went wrong the electricity went out the water was shut off sliding patio wouldn't close the gas oven didn't work, and it rained. Out of

    asked on October 1, 2014
  31. chemistry

    A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.17?

    asked on May 19, 2013
  32. please help analytical chemistry

    50 ml of a .1103M solution of formic acid is titrated with a .2511M NaOH. a) What is the pH before and NaOH is added? b) How many mL of NaOH solution must be added to reach the equivalence pt? c) what is the pH at the equivalence pt of the titration? d) If

    asked on April 8, 2013
  33. Chemistry

    The alcohol in gasohol burns according to the reaction C2H5OH(l) + 3O2(g) --> 2CO2(g) + 3H2O how many grams of water are produced when 3.0 moles of C2H5OH are burned in an excess of oxygen gas?

    asked on October 15, 2012
  34. Chemistry

    I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are

    asked on October 15, 2012
  35. Chemistry

    I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are

    asked on October 15, 2012
  36. business

    7. A 8. C 9. A 10. A please check 7. According to Peter Drucker, who determines an organization’s purpose, or mission? A. Company executives C. Stockholders B. Customers D. Supervisors 8. Which one of the following is a personal source of power? A.

    asked on July 5, 2012
  37. trig

    tan theta= -4/3 and sec theta

    asked on December 7, 2011
  38. IPC(integrated phsyics)

    Insulating materials are rated by their _____. specific heat heat index R-value temperature resistance

    asked on November 29, 2010
  39. 12th grade

    3X+3=3

    asked on July 5, 2010
  40. calculus

    Which of the following is the same as 4 ln2x? a) ln8x B)8lnx c)ln8 + lnx d)ln 16^4

    asked on June 28, 2009
  41. math

    compute dy/dx if y = u^3/2, u = 4x + 1

    asked on June 16, 2009
  42. Radioactivity

    When first discovered alpha, beta, and gamma radioactivity were referred to as alpha rays, beta rays, and gamma rays. Now we refer to alpha particles and beta particles, but still use the term gamma rays. What type of particles are alpha and beta commonly

    asked on June 2, 2009
  43. Health

    I posted this question yesterday and I got confused. The determinant of total energy requirement that may most appropriately be manipulated in a weight loss program is: 1. basal metabolic rate 2. physical activity 3. dietary thermogensis 4. body

    asked on April 20, 2007
  44. chemistry

    The decomposition reaction, X → products, has rate constant k = 0.00437 mol−1 L s−1. How long will it take for the decomposition to be 75% complete, if the initial concentration of X is 1.85 mol L−1 ?

    asked on February 12, 2020
  45. chemistry

    need help with questions related to rate. i pasted the two links below. any help would be appreciated!! gyazo.com/425bad92c5dfaae93a8e484ffd9ae8ca gyazo.com/5a0190f5c6ccec1a96263cb2342fad2e

    asked on February 12, 2020
  46. Language Arts

    A: It was freezing cold out on the prairie, but Daniel trudged on. He had to find firewood. His mother was ill. She needed the warmth of a fire. So many people on the wagon train had died. Daniel was scared. He wondered if they would ever reach Oregon by

    asked on November 22, 2019
  47. Language Arts

    Your friend promises you that you can borrow her roller skates, but when she comes over, she forgets to bring them. When you remind her, she says, “Oh, right. Maybe some other day.” The next time you get together, she never mentions the skates. You ask

    asked on November 22, 2019
  48. Language Arts

    Which revision to sentence 6 contains an example of vivid description? 1. She needed to make a decision immediately. **** 2. The troop was waiting, and she needed to make a decision. 3. There was no more time to hesitate; she needed to make a decision, and

    asked on November 22, 2019
  49. Language Arts

    (1) Sal looked at the map one more time. (2) She knew that the whole troop was depending on her. (3) Sal couldn’t decide if the trail was to the east or to the west. (4) The map was confusing. (5) Sal was tired. (6) She needed to make a decision. Which

    asked on November 22, 2019
  50. Language Arts

    (1) Sal looked at the map one more time. (2) She knew that the whole troop was depending on her. (3) Sal couldn’t decide if the trail was to the east or to the west. (4) The map was confusing. (5) Sal was tired. (6) She needed to make a decision. Which

    asked on November 22, 2019
  51. Language Arts

    Which of the following topics would be most appropriate for an autobiographical narrative? 1. your opinion of a recent documentary about bicyclists 2. your account of the day you learned how to ride a bike**** 3. your explanation of how to fix a bike’s

    asked on November 22, 2019
  52. Language Arts

    Which detail in the selection confirms your prediction from the previous question? (Previous question was "Which is the best prediction based on the first three sentences of the selection?") 1. Sandy gives the narrator vegetables from her garden. 2. The

    asked on November 22, 2019
  53. Language Arts

    (1) Everything I know about gardening I learned from my good friend Sandy. (2) When I first moved from Iowa to Georgia last May, I tried planting a vegetable garden right away. (3) As I happily weeded the ground I thought to myself, “My garden’s

    asked on November 22, 2019
  54. Language Arts

    (1) Everything I know about gardening I learned from my good friend Sandy. (2) When I first moved from Iowa to Georgia last May, I tried planting a vegetable garden right away. (3) As I happily weeded the ground I thought to myself, “My garden’s

    asked on November 22, 2019
  55. Language Arts

    (1) Everything I know about gardening I learned from my good friend Sandy. (2) When I first moved from Iowa to Georgia last May, I tried planting a vegetable garden right away. (3) As I happily weeded the ground I thought to myself, “My garden’s

    asked on November 22, 2019
  56. Language Arts

    Which of the following nouns from the selection is a proper noun? 1. garden 2. soil 3. sandy 4. environment

    asked on November 22, 2019
  57. History

    How did the spoils system affect president James Garfield and his successor Chester A. Arthur?

    asked on March 29, 2018
  58. History

    how did the spoils system affect president james Garfield and his successor Chester A. Arthur?

    asked on March 26, 2018
  59. spanish

    Hay (There are) ________ gatos en la casa. a. las c. el b. un d. tres

    asked on September 24, 2017
  60. Chemistry

    Calculate the ph of a solution that is 0.2M In NH3 and 0.3M in NH4Cl we find that the acid dissociation constant ka for NH3 is 5.7×10^-10

    asked on April 29, 2017
  61. Politics

    Compare Britain's and America's government. How are they similar? How are they different? Consider things like: Who is the leader of their country or their executive? Who makes the laws in their country? How do their elections work?

    asked on February 20, 2017
  62. chemistry grade 11

    ferrous sulfate was prepared by dissolution of x grams p feso4.7H20 crystals in 500 ml water. 20 ml of this solution necessities 5 ml of 0.1mol/l kmn04 for the pink color to persist. find x

    asked on January 4, 2017
  63. Math

    7×5

    asked on October 30, 2016
  64. Physics

    A 59.6 g box is left 17.5 cm from the centre of a merry-go-round. If the box has coefficients of friction of μs = 0.790 and μk = 0.550 with the merry-go-round, what is the maximum speed of the merry-go-round without having the box slide off of the

    asked on October 24, 2016
  65. chemistry

    How many grams of FeBr 3 would be present in 150.0 mL of a 0.435 M FeBr 3 solution?

    asked on September 18, 2016
  66. physic

    A hand-driven tire pump has a piston with a 2.50 cm diameter and a maximum stroke of 30 cm. how much work do you do in one stroke if the average gauge pressure is 2.40×105 N.m – 2? Select one: a. 141 J b. 4.5×107 J c. 35.3 J d. 1.41 ×108 J

    asked on May 26, 2016
  67. Micro Economics

    In YEAR 1, the price of gadgets is $2, while the price of the single variable input used is $28. A profit-maximizing gadget producer uses 9 units of input to produce and sell 252 units of gadgets, earning profit of $2*252 - $28*9 = $252 In YEAR 2, the

    asked on May 9, 2016
  68. Science

    What are the main parts of the prefrontal cortex?

    asked on March 10, 2016
  69. Language Arts

    Identify the independent clause in the following sentence: Before electric lighting was invented, people used candles to light their homes at night. A. Before electric lighting was invented B. people used C. people used candles to light their homes at

    asked on February 8, 2016
  70. Chemistry

    Calculate the average kinetic energy of 1 mol of hydrogen molecules and of 1 mol of sulfur hexafluoride molecules at 25 degrees Celsius.

    asked on January 18, 2016
  71. Chemistry

    A 15.00 g chunk of lustrous silver metal is heated to 50.0 degrees C and is then placed in a coffee cup calorimeter containing 50.0 mL of water at 15.30 degrees C. After equilibrium, the water temperature is measured to be 16.56 degree C. Suggest which

    asked on January 14, 2016
  72. Chemistry

    Write a balanced chemical equation and determine the enthalpy of combustion for carbon in the diamond allotropic form. Is this the correct chemuc eq? C + O2 ----> CO2?

    asked on January 14, 2016
  73. Math

    Identify the sampling method. You want to determine the number of text messages students at your school send in a month. You go to the cafeteria and randomly ask students as they come out of the lunch line. A. Random B. Systematic C. Stratified D. None of

    asked on January 14, 2016
  74. Chemistry

    Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house. Assuming that all the energy given off in the reaction goes to heating up only the

    asked on January 13, 2016
  75. algebra 1

    In February, you have a balance of $80 in your bank account. Each month you deposit $20. Let January = 1, February = 2, and so on. Write an equation for this situation. Use the equation to find the balance in December. y = 20(x – 4); $200 y - 80 = 20(x -

    asked on December 18, 2015
  76. Science

    A car is traveling at 65 km/hr. The brakes are applied and the car stops in 3 seconds. What is the car's acceleration?

    asked on December 1, 2015
  77. Math

    prove sin2x+cos2x+1 tan(pi/4+x) ______________ = __________ sin2x+cos2x-1 tanx so what I did tan(x) (1+cos(2x)+sin(2x)=tan(pi/4+x) (-1+cos(2x)+sin(2x)

    asked on November 26, 2015
  78. language arts

    El Niño is a change in how warm the ocean is. It happens when warm water from the Pacific moves eastward. No one knows why this happens. It takes place every four or five years and lasts for about a year. No two are the same. It can change the weather in

    asked on November 15, 2015
  79. Biology

    How do nucleotides and hydrogen bonds affect the structure of DNA? Maybe something like nucleotides make up DNA and hydrogen bonds hold the nitrogenous bases together?

    asked on November 13, 2015
  80. reading

    Which group of words in the following sentence is a dependent clause? Yesterday morning, Sam slept late because there is no school on holidays. A. Yesterday morning B. Sam slept late C. because there is no school on holidays D. Sam slept late because there

    asked on October 18, 2015
  81. reading

    32. What does the word ingenious mean in the following sentence? Daedalus was known for his ingenious inventions and projects. A. complicated B. expensive C. clever D. confusing is it c ?

    asked on October 18, 2015
  82. reading

    Which word pair from “Ichiro's Tenth Birthday Party” contains antonyms? A. tried—impossible B. basketball—volleyball C. thrilled—forlorn D. brothers—uncles is it c?

    asked on October 18, 2015
  83. reading

    What is the meaning for the homonym swallow in the following sentence? If you fly too low, the waves will swallow you. A)believe too easily B)take into stomach C)a small, swift bird D)take in is it d?

    asked on October 18, 2015
  84. reading

    Daedalus was a Greek architect—a building designer—who was known for his ingenious inventions and projects. Daedalus designed, among other things, the Labyrinth, a maze of many paths. Famous throughout the world, the Labyrinth consisted of twisting

    asked on October 18, 2015
  85. reading

    Daedalus was a Greek architect—a building designer—who was known for his ingenious inventions and projects. Daedalus designed, among other things, the Labyrinth, a maze of many paths. Famous throughout the world, the Labyrinth consisted of twisting

    asked on October 18, 2015
  86. reading

    It was the summer before Ichiro started fifth grade, and he was about to turn ten. His family had just moved to a new city, so he didn’t know many other children, but his mother suggested that he host a birthday party and invite some of the friends he

    asked on October 18, 2015
  87. reading

    It was the summer before Ichiro started fifth grade, and he was about to turn ten. His family had just moved to a new city, so he didn’t know many other children, but his mother suggested that he host a birthday party and invite some of the friends he

    asked on October 18, 2015
  88. reading

    What is the suffix of intentionally? I thing it is ally since the root is intention am i correct?

    asked on September 15, 2015
  89. reading

    What is the suffix, root, and prefix of the word compressions ? I think it is: Prefix- none Suffix- ions Root- compress Am i correct?

    asked on September 15, 2015
  90. reading

    Im not sure for the prefix of intentionally is it in or is there no prefix?

    asked on September 15, 2015
  91. math

    The teacher of a mathematics class has written up the final exam, but wants the questions to be random for each student. There are 28 students in the class, and the test has 100 questions. Each question has four possible answers. a. After reading carefully

    asked on July 29, 2015
  92. : math

    Clayton has 3 quarters, 7 one-dollar bills, 9 dimes, 9 nickels, and 3 pennies. How much money does he have?

    asked on July 15, 2015
  93. biology

    EVOLUTION (fill in the blanks) Natural selection is the BLANK for evolution As a result of natural selection, organisms with more BLANK traits are more likely to BLANK, BLANK, and BLANK on the favorable traits to their offspring. These traits are passed on

    asked on March 26, 2015
  94. biology (fill in the blanks)

    Big picture of natural selection/ keep in mind… Natural selection doesn’t move in a BLANK BLANK Natural selection is not a BLANK process Natural selection isn't BLANK; Its all relative to the BLANK. Its from a study form. These are the ones I don't

    asked on March 26, 2015
  95. Economics

    What are the conditions of China's economy in transition these past few years? How does it benefit(or harm) the country Switzerland? If it benefits Switzerland, how will Switzerland's IMF(international monetary fund)be affected or act towards it? And if it

    asked on February 26, 2015
  96. Geographic information system

    How would you find the answer to this? Assume that two two-by-two source rasters contain the following values: Raster 1: 7 14 10 36 Raster 2: 5 2 2 5 What would be the sum of all pixel values in the raster that would be created using the following map

    asked on August 28, 2014
  97. Home Economics

    7. The goal of the European Union is to _____. outdo the United States as an international trading nation coordinate tariffs among its members make a bigger trading bloc than that of the Asian nations create a single regional economy among its members

    asked on May 28, 2014
  98. Economics

    None of these seem to be right? I literally am so confused by the way they set up each one. Shouldnt it be unemployed /labor force x 100?

    asked on May 27, 2014
  99. Science

    common pathways for food and air are the (1), which connects to the mouth, and (2), which connects to the larynx. Epithelium in this region is (3), which provideds good protection from friction. Three bands of skeletal muscle, the (4) propel food into the

    asked on January 21, 2014
  100. Math

    This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

    asked on November 19, 2013

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