Popular questions and responses by Mac
  1. chemistry

    how many liters of 0.100 M HCL would be required to react completely with 5.00 grams of calcium hydroxide?

    asked on March 6, 2008
  2. American Government

    Read the excerpt from the state constitution of Arkansas, which was adopted in 1874. No person who may hereafter fight a duel, assist in the same as second, or send, accept, or knowingly carry a challenge therefor, shall hold any office in the state, for a

    asked on April 4, 2018
  3. engineering mechanics (dynamics)

    A 500 N weight is attached to a stiff rod of negligible weight that is hinged to one end. The rod is released from rest in horizontal position and allowed to swing freely in vertical arc. Through what angle with the horizontal must it swing to cause a

    asked on August 25, 2016
  4. econs

    How do you think our nation’s output should be distributed according to income or according to some other standard (such as basic human need)?

    asked on September 14, 2015
  5. Math/Compound Interest

    1. Use the compound interest table to find the compound amount earned on a $5,900 deposit for 10 years at 10% compounded semiannually. _____________________________________ A. 9,610.45 b. 15,654.47 c. 3,710.45 d. 12,375.66 2. Megan deposited $6,000 in an

    asked on February 19, 2015
  6. trigonometry

    What is the single trigonometric function of (Cos 20 degrees) (Cos 30 degrees)-(Sine 20 degress) (Sin 30 degrees)

    asked on February 23, 2017
  7. Macroeconomics

    A decrease in aggregate demand will cause A. aggregate supply to fall according to classical economists, and prices to fall according to Keynes. B. prices to fall and unemployment to increase according to both classical economists and Keynes. C. prices to

    asked on July 8, 2009
  8. math

    Jungle Warehouse signed a 9-month simple discount note with a face value of $5,600. Find the proceeds if the discount rate is 13%

    asked on April 8, 2017
  9. Algebra

    Carly deposits $900 into an annuity at the end of every month for 2.5 years. The fund holds international stocks, and it yields about 12% compounded monthly. Find the interest earned after 2.5 years. a.$31,619.46 b.$31,306.40 c.$4,619.47 d.$4,306.40 (I can

    asked on April 23, 2015
  10. Physic

    A box with a weight of 22N falls through the air with a wind resistance of 14N, what is the mass of the box and the acceleration of the box?

    asked on December 4, 2012
  11. math

    Suppose strontium-90 decays at a rate of 2 percent per year. (a) Write the fraction P of strontium remaining, as function of t, measured in years. (Assume that at time t=0 there is 100 % remaining.) Answer: P(t)=(.98)^t (b) Estimate the half-life of

    asked on September 14, 2017
  12. Math

    The Romascos hope to have $2,000 in 3 years for a down payment on a new pool. They invest $1,000 in an account that pays 8% interest at the end of each year. Will they have enough money at the end of 3 years to meet their goal of a down payment? What is

    asked on March 12, 2015
  13. Hydrogen

    Why does a hydrogen atom, which has only one electron, have so many spectral lines? Any help gratefully received. There are many energy levels the one electron can transition from/to.

    asked on February 4, 2007
  14. Chemistry

    How many moles of HNO3 are present if 0.116mol of Ba(OH)2 was needed to neutralize the acid solution?

    asked on April 1, 2015
  15. World Geography and History

    The ideas of _____ _____ are the basis for communism.

    asked on December 17, 2012
  16. Physics

    Mike pulls a 4.5 kg sled across level snow with a force of 250 N along a rope that is 35.0° above the horizontal. If the sled moves a distance of 63.8 m, how much work does Mike do?

    asked on January 23, 2012
  17. math

    reiny, could you give the motorists two trips another try. it appears you can work it . i'd appriciate seeing an answer. thanks.

    asked on July 22, 2011
  18. physics

    A satellite is in orbit about Earth. Its orbital radius is 7.51×107 m. The mass of the satellite is 5415 kg and the mass of Earth is 5.974×1024 kg. Determine the orbital speed of the satellite in mi/s. 1 mi/s = 1609 m/s.

    asked on February 26, 2011
  19. english

    Which sound is the same in paint and way? What does can't mean? 1) can't not. 2) could not 3) cannot . Correct the following sentences. 1) look out four that car. 2) my pet cat are small 3) a toy jet am in the box. 4) mrs larson picked up the baby 5) had

    asked on October 15, 2009
  20. Math

    Determine the solution set to the equation: 2sin^2x+cosx-2=0

    asked on March 2, 2009
  21. algebra

    simplify 24x-18x

    asked on August 11, 2020
  22. mathematics

    the sum of two numbers is 21 and their difference is 13. find two numbers

    asked on July 28, 2020
  23. biology

    Which of the following BEST explains whether cotransport is an active process or a passive process? A. It is active because ATP is needed to transport both chemicals across their concentration gradients. B. It is active because ATP is needed to establish a

    asked on September 28, 2019
  24. biology

    Studies peg the number of proteins in the human body to be around 10,000 to several billions. This diversity is a result of the differences in the structure of proteins. Which property of proteins affects its structure? A. shape of amino groups B. sequence

    asked on September 12, 2019
  25. geography

    What are the geographical and social economic which have led to population in lagos,porthacourt&kano

    asked on March 5, 2019
  26. math

    Compute the monthly payments for an add-on interest loan of $850, with an annual interest rate of 15 percent and a term of 4 years.

    asked on May 2, 2014
  27. statistics

    Miles per gallon. In its Fuel Economy Guide for 2008 model vehicles, the Environmental Protection Agency gives data on 1152 vehicles. There are a number of outliers, mainly vehicles with very poor gas mileage. If we ignore the outliers, however, the

    asked on September 21, 2011
  28. math

    a motorist drives to a city in 4 hrs. and returns by another route which is 26 mi. longer. on the return trip he traveled 5 miles per hour faster and took 4 hours and 12 min. . find the length of the shorter route.

    asked on July 22, 2011
  29. english

    Find the sentence----------------under the tree. Tom and Jose are. Or. put the toys away

    asked on October 7, 2009
  30. Molecular formula

    I have to find the molecular formula for As2O3, to do so I have to divide its molecular mass by its empirical mass. I have worked ou that its molecular mass is 197.9 g/mol. How would I find its empirical mass, is it not the same as its molecular mass? Many

    asked on January 20, 2007
  31. Chemistry

    Need to write a balanced chemical equation for the reaction between hydrogen selenide and tin. I know that the hydrogen selenide decomposes producing solid tin selenide and hydrogen gas but how would I balance that in the equation. Any help gratefully

    asked on January 7, 2007
  32. chemistry

    How do I find the empirical formula for aluminium selenide? You have to have some data, such as masses, or percent: Empirical means it was measured. The empirical formula for aluminium selenide is the same as it's molecular formula; Al2Se3. The empirical

    asked on January 6, 2007
  33. Motion equation

    A stone, which weighs 0.62kg, is thrown, at 5.5ms, its kinetic energy at its maximum height above the surface is 2.3J, what is the height of the stone at this point? Any eqautions or advice gratefully received. I assume that is 5.5 m/s, the initial

    asked on December 17, 2006
  34. calculus

    Stefan’s Law states that a body emit radiant energy to a sink at absolute zero according to the formula R = kT4, where R is the measure of the rate of emission of the rate of energy per square unit of area, T is the measure of the Kelvin temperature of

    asked on October 22, 2020
  35. Mathematics

    A rectangular cardboard is 8cm long and 6cm wide.what is the least number of beads you can arrange on the board such that they are at least two of the beads that are less than √10cm apart? Please show step...

    asked on July 26, 2020
  36. History

    how did SC benefit from the war

    asked on April 2, 2020
  37. biology

    The answer to which of these scientific questions would MOST likely explain why all life on Earth is based on carbon? A. How many carbon isotopes are stable? B. How much carbon is found in Earth’s crust? C. What are the naturally occurring states of

    asked on September 28, 2019
  38. Science

    A student is shown images of different reactions. Which question would help the student determine which reaction is a peptide synthesis reaction? A. Question A: Which image shows the disruption of the hydrogen bonds between the atoms in the molecules? B.

    asked on September 12, 2019
  39. Math(Pre-algebra)

    Ok, my question is ‘ last year the price of a certian computer was 150$ more than it is now. This year's price is 3/4 of last year's price. How much does the computer cost this year?‘. Can someone explain to me how to create an equation for this?

    asked on May 28, 2018
  40. English

    What do you think the title, "The Great Gatsby," means? Is Gatsby “great”? Why or why not?

    asked on April 8, 2018
  41. maths

    If I bought a car at R349000 at 8.75% interest per year and made monthly payments of R5000 per month,what would my total repayment amount be for the car?

    asked on April 7, 2017
  42. Riddle

    Where C = 46, D = 12, P = 11, Q = 37, R = 17, Y = 19 what numbers do T and S equal?

    asked on April 18, 2016
  43. Chemistry

    4.5 moles of oxygen reacting with enough sodium will form how many moles of sodium oxide? How do you solve?

    asked on March 2, 2016
  44. math

    Need calculator and I didn't agree! 125+(5×5)+9÷3×8 125+25+9÷3×8 125+25+9÷24 125+25+0.375 150+0.375 150.375

    asked on December 1, 2015
  45. education

    My other question is Which is your favorite Assessment to use? Elementary age Anecdotal Records •Checklists •Event Sampling Portfolios •Rating Scales •Rubrics •Running Record •Teacher and Child Self-Assessments •Time Sampling Of these what

    asked on September 21, 2015
  46. education

    My other question is Which is your favorite Assessment to use? Anecdotal Records •Checklists •Event Sampling Portfolios •Rating Scales •Rubrics •Running Record •Teacher and Child Self-Assessments •Time Sampling Of these what are the

    asked on September 21, 2015
  47. Education

    I have a question if anyone can help that would be great!! I have to put a questionnaire together for my capstone class...How many of you use RTI daily if so how do you use it, thoughts on assessment and instruction and the future of RTI? DO you feel that

    asked on September 21, 2015
  48. Organic Chemistry

    The solubility of compound A in ethanol is 0.5 g per 100 mL at 0oC and 5.0 g per 100 mL at 78oC. (a) To make a hot, saturated solution of 15.0 g of A at 78oC, how much ethanol is required? (b) When the solution prepared in is cooled to 0oC, how much of

    asked on September 24, 2014
  49. American History

    Most of the asians who immigrated to the united states in the 1850s came because a.) Of available work b.) Of the rumor of a "golden mountain" in california" c.) they were forceds to flee due to collapes of the japanese economy d.) none of these

    asked on May 7, 2013
  50. Prob and stats

    A card is to be chosen at random from a shuffled deck. Find the probability the card drawn is A. The queen of clubs , given that it is an honor card B. a red four, given that the face number is even C. A seven, given that the face number is prime Please

    asked on February 19, 2013
  51. Physics

    25 litre bottle of oxygen in a hospital. If the bottle is at 12 atmospheres, what volume of oxygen is available to the patient? If the oxygen is stored at 4 degrees C and used at 20 degrees, what difference does this make? (Assuming start volume and

    asked on January 3, 2013
  52. Physics

    A river flows due east at 1.42 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 11.9 m/s due north relative to the water. If the river is 389 m wide, how far downstream is the boat when it reaches

    asked on October 25, 2012
  53. English

    1. When my teacher stopped [making reeds. Sending] all of her students on a wild goose chase. a. no change b. reeds. Thus sending c. reeds, she sent d. reeds, sending 2. They tend to take their time sending reeds to [you. I usually] have to wait a. no

    asked on September 20, 2012
  54. math

    mr. pursley, have you ever worked geo., trig. etcwith no calu.s with the heat on , when it had to be right?wheather you blew up your target or something else or the bld. collapsed or was built in the correct place? i'm not an answer grazer, but qam an

    asked on July 22, 2011
  55. math

    man drives for a time at 20 mph. then for a time at 45 mph.he drives 25 mi. he drives 50 min. . how many miles did he drive 20 mph ?

    asked on July 21, 2011
  56. Algebra

    How do I calculate finding the weight of someone, on the earth's surface with a radius of 3900 miles, and their weight 625ft above the surface?

    asked on July 16, 2011
  57. physics

    Cloverleaf exits are approximately circular. A 1256 kg automobile is traveling 58 mph while taking a cloverleaf exit that has a radius of 35.4 m. Calculate the centripetal acceleration of the car and the centripetal force on the car. Remember that 1 mph =

    asked on February 26, 2011
  58. Physic

    A spherical concave mirroe has a radius =0.4m forms an image of a 0.2 m high object located 1m from the vertex of mirror. find the position and height of the image. ? please explain your solution

    asked on December 12, 2010
  59. chemistry

    calculate the amount of reactants required to produce 150g of H2O in CO2+H2O

    asked on December 9, 2010
  60. science

    13. A procedure used to remove kidney stones by breaking them up in the urinary tract and allowing them to wash out with urine is A. ureterolithotomy. C. lithotripsy. B. lithopaxy. D. nephrolithotomy. 14. The convulsive stage of toxemia of pregnancy is A.

    asked on November 12, 2010
  61. science

    Why do you think that the Scientific Method is so important when we talk about the development of Psychology as a science?

    asked on September 28, 2010
  62. science

    what is your opinion on the Koyoto Protocol? do you believe we should participate or not

    asked on August 9, 2010
  63. Algebra

    Please help! I need to factorise and solve this equation, x^2 +x -30 =0 I then need to explain how I would use the answer drom this to solve the equation 4x^2 +4x-120=0

    asked on May 5, 2010
  64. geometry

    find the value of x. triangle xyz 2x, 4x+1, and 2x+3 perimeter of triangle xyz=88

    asked on December 15, 2009
  65. Physics

    A transverse wave on a string is described by the following equation. y(x, t) = (0.35 m) sin[(1.25 rad/m)x + (81.2 rad/s)t] Consider the element of the string at x = 0. (a) What is the time interval between the first two instants when this element has a

    asked on November 30, 2009
  66. external/internal character analysis

    Hi, I need to prepare a demo lesson for 2nd grade on teaching character internal/external traits to students the lesson needs to be 40 minutes can you give me any ideas

    asked on October 18, 2009
  67. english

    Find the words that go together. Snow , sled, rain, wind. Which words have the sound aw in saw?paw watch came tall. What does isn't mean?

    asked on October 15, 2009
  68. vocabulary

    How can I compound cowgirl

    asked on October 7, 2009
  69. Macroeconomics

    V pays 20 cents V sells to W for 35 cents W sells to X for 55 cents X sells to Y for 80 cents Y sells to Z for $1.00 Contribution to GDP: (a) 20 cents (b) $1.00 (c) $1.90 (d) $2.90

    asked on July 3, 2009
  70. macroeconomics

    (1) Population: 250,000 Unemployed: 20,000 Labor Force Participation Rate: 80% (a) How many people are in the labor force? (b) What is the unemployment rate? (2) Not in the labor force: 125,000 Unemployed: 25,000 Employed: 100,000 What is the unemployment

    asked on June 29, 2009
  71. math

    I have fewer ones than tens. The value of my tens is 30. What 2 numbers can I be?

    asked on October 27, 2008
  72. English

    Can someone please provide me with reliable sites on how to write an absurdist drama piece and more specifically relate it to Harold Pinter's style. Cheers

    asked on March 31, 2008
  73. mathematicas

    how do you write the matrix: 1 2 -1 | 3 7 -1 0 | 2 3 2 1 | -1 in row echelon form?

    asked on January 14, 2008
  74. sociolinguistics

    hi! important there a possibility to have isoglosses in the UK..if yes why yes if no why not?

    asked on September 19, 2007
  75. Communication Technology

    A digital fsk equipment transmits bipolar return to zero data. when sending a sequence of alternating ones and zeros how many different frequenies will be transmitted? The fsk is actually sending mark and space signals, isn't it? The actual frequncies

    asked on August 9, 2007
  76. Ecology

    Hi, to calculate the GPP of an area, would I need to add the NPP and amount of respiration together? Hope this makes sense!

    asked on December 28, 2006
  1. English

    Y’all sum narcs

    posted on April 8, 2020
  2. Chemistry

    .0584 J/K

    posted on January 30, 2020
  3. biology

    I reread my lesson and found it .I overlooked the first time:-)

    posted on September 12, 2019
  4. biology

    I am torn between B and D

    posted on September 12, 2019
  5. Social Studies

    Yes a little help with this would be nice....does anyone besides Ms.Sue know? :P

    posted on March 27, 2019
  6. Math


    posted on February 1, 2019
  7. Math(Pre-algebra)

    Thanks, I was really confused with this problem for the last hour.

    posted on May 28, 2018
  8. English

    sma ms SUE

    posted on April 12, 2018
  9. Social Studies

    I think she is a tutor on this website but not sure

    posted on November 9, 2017
  10. Math


    posted on October 5, 2017
  11. algebra


    posted on September 18, 2017


    posted on September 15, 2017
  13. Poetry 7 - Check please!

    I got a 100%! Thanks!

    posted on February 15, 2017
  14. art

    Where's question number 6?

    posted on February 10, 2017
  15. LA

    Woah I just saw all this drama right now and I am pretty sure this is a free country where people can use whatever language they want. Number two why do you people care about what other people are saying some people actually come here for help not to

    posted on January 23, 2017
  16. Algebra 2

    My Name is Mac

    posted on December 21, 2016
  17. langage arts

    SAMI is right

    posted on December 16, 2016
  18. Health.. NEED HELP ASAP

    If you go to connections this is the quiz for Living with an eating disorder

    posted on December 16, 2016
  19. p.e

    Um ms.sue arent you a teacher?? If you are u r one bad teacher

    posted on November 18, 2016
  20. MATH

    b a d b a If you are connexus academy these are the answers

    posted on October 26, 2016
  21. Math

    I am in 8th grade and I found the answer to this problem to be 2.25

    posted on October 25, 2016
  22. math

    8(2x-3)-6x if x=3

    posted on August 20, 2016
  23. science

    You could use potassium nitrate to test for potassium because both potassium and nitrate are water soluble. Potassium nitrate will react with the fluoride and create a solid precipitate. Potassium nitrate is water soluble.

    posted on June 9, 2016