Most popular questions and responses by Joseph
  1. language

    Barbra Jordan believes that we must put our faith in children because?

    asked on November 23, 2017
  2. Computers

    What is one important feature of an AUP? A. a list of all available courses B. a clear outline of the consequences of violating the policy C. a permissive approach to internet usage D. a calendar for the academic year

    asked on February 20, 2015
  3. Health

    Identify two factors that affect your health that as a teenager you can control.

    asked on January 10, 2019
  4. Mathematics

    Perfume is sold in two different sizes of bottle The 80ml bottle is priced at £55 The 50ml bottle is usually priced at £45, but is on special offer If you buy one 50ml bottle of perfume, you get a second for half price By calculating the price per ml

    asked on November 11, 2017
  5. algebra

    ax/b + cx/d =e solve for variable x

    asked on February 7, 2011
  6. Science

    Concentrated phosphoric acid is 90% by mass and the remaining mass is water.The molarity of phosphoric acid in 90% is 12.2M at rtp. a)What is the density of the solution at rtp ? b)What volume (in mL)of this solution is needed to make a 1.00L solution of a

    asked on November 11, 2015
  7. science

    NH2-, NH3, and NH4+ have H-N-H bond angles of 105, 107 and 109. Explain this variation in bond angles.

    asked on August 10, 2010
  8. chemistry

    An optically active compound A, C6H10O2, when dissolved in NaOH solution, consumed one equivalent of base. On acidification, compound A was slowly regenerated. Treatment of A with LiAlH4 in ether followed by protonolysis gave an optically inactive compound

    asked on April 10, 2015
  9. Physics

    A car is traveling at 24.4 m/s. If the driver has a reaction time of 1 second, what will be his stopping distance if his car slows down at 8 m/s2?

    asked on September 19, 2013
  10. math

    what number gives the same result when multiplied by 6 as it does when 6 is added to it?

    asked on January 25, 2011
  11. Social Studies

    1.What was North Korea's response to president George W. Bush's 2001 threat to stop negotiations? A.North Korea immediately gave into his list of conditions B.North Korea resumed to nuclear program C.North Korea sought the help of the United National

    asked on May 1, 2017
  12. Math

    Use a tree diagram or systematic list to determine the number of ways a nickel, a dime, and a quarter can be flipped to get exactly one tail.

    asked on September 4, 2016
  13. Science

    which of the following are predicted by the molecular orbital model to be stable diatomic species N22-, O22-, F22-

    asked on October 23, 2010
  14. chemistry

    write the net ionic equation for the following : 2CuCl(aq)-> CuCl2(aq)+ Cu(s) 4NaCl(aq)+2H2SO4(aq)+MnO2(s)-> 2Na2SO4(aq)+2H2O(l)+Cl2(g) 3KOH(aq)+Fe(NO3)3(aq)->Fe(OH)3(s)+ 3KNO3(aq)

    asked on September 6, 2010
  15. math

    Trent earned $28,500 last year. He paid $8,265 for rent. What percent of his earnings did Trent pay for rent

    asked on February 26, 2013
  16. pre-al

    If you roll a standard number cube 42 times, how many times do you expect the cube to show a six or an eight?

    asked on May 9, 2017
  17. Physics

    Yo-Yo man releases a yo-yo from rest and allows it to drop, as he keeps the top end of the string stationary. The mass of the yo-yo is 0.056 kg, its moment of inertia is 2.9 X 10^-5 kg X m^2 and the radius r of the axle the string wraps around is 0.0064 m.

    asked on October 23, 2011
  18. S.S

    Which of the following best describes Georgia’s role in the War of 1812? A.The war was mainly fought in Georgia.* B.Georgians were afraid that the British would threaten their trade. C.Georgia was the place the peace treaty was written. D.British forces

    asked on August 31, 2018
  19. S.S

    What was the name of the illegal land deal in which Georgia legislators accepted bribes from land companies in exchange for the right to purchase millions of acres of Georgia territory? A.the Georgia Land Grab B.the Trail of Tears* C.the Yazoo land fraud

    asked on August 30, 2018
  20. Chemistry

    A gaseous mixture of O2, H2, and N2 has a total pressure of 1.50 atm and contains 8.20 g of each gas. Find the partial pressure of each gas in the mixture They don't give you Volume and Temperature. Please explain it to me, thank you!

    asked on August 2, 2010
  21. Physics

    A man using a 70 kg garden roller on a level surface exerts a force 20 kgf at 45 degrees to the ground . Find the vertical force of the roller on the ground if he ; a) pulls the roller. b) pushes the roller.

    asked on January 10, 2011
  22. Chemistry

    A solution is made by dissolving 10.20 grams of glucose (C6H12O6) in 355 grams of water. What is the freezing point depression of the solvent if the freezing point constant is -1.86 °C/m?

    asked on May 19, 2017
  23. Physics

    A wet bar of soap slides freely down a ramp 17.0 m long, inclined at 38.0 degrees. How long (in seconds) does it take to reach the bottom? (Neglect friction.)

    asked on February 21, 2017
  24. science

    A 10.0 kg cart and a 15 kg cart are locked together with a compressed spring between them. They are then released so that the spring pushes the two carts apart. The 15 kg cart is moving at 3.0 m/s afterward. How fast is the 10.0 kg cart moving?

    asked on February 16, 2013
  25. physics

    A child pedals a tricycle, giving the driving wheel an angular speed of 0.373 rev/s. If the radius of the wheel is 0.260 , what is the child's linear speed?

    asked on October 23, 2011
  26. Physics

    A runner is jogging at a steady 6.2 km/hr. When the runner is 4.9 km from the finish line, a bird begins flying from the runner to the finish line at 24.8 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and

    asked on August 20, 2015
  27. physics

    Indiana Jones is swinging from a rope. The distance between the pivot point and his center of mass is 31.00m. He begins swinging from rest at an angle theta=20.00 degrees. Assuming that Indiana and the rope can be treated as a simple pendulum, what is the

    asked on June 27, 2012
  28. Chem.

    Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1 degrees celcius. At what temperature does Benzene boil when the external pressure is 440 torr?

    asked on February 10, 2010
  29. math

    Juanita wants to give bags of stickers to her friends. she wants to give the same number of stickers to each friend. she's not sure if she needs 4 bags or 6 bags of stickers. How many stickers could she buy so there are no stickers left over.

    asked on February 23, 2015
  30. science

    NH2-,NH3, and NH4+ have H-N-H bond angles of 105, 107, and 109. Explain this variation in bond angles

    asked on August 12, 2010
  31. Precalc

    Assume the annual number of skin cancer deaths increases geometrically, instead of arithmetically. Use the same starting number of 9,300 in 2000 and 200,000 in 2050. Select the number closest to the ratio of number of deaths from year to year.

    asked on November 10, 2018
  32. Chemistry

    Write a balanced net ionic reaction for the reduction of cupric ion (Cu2+) by hydroxylamine (NH2OH) in acid solution, using the smallest integer coefficients. (Do not include symbols for state of matter in your answer). in order for this to reduce Cu+2 to

    asked on October 19, 2015
  33. reding

    milkweed jerry spinelli what do you think the black horse on the merry-go-round might have symbolized?

    asked on March 26, 2009
  34. chemistry

    A small “coffee cup” calorimeter contains 110. g of H2O at 22.0°C. A 100. g sample of lead is heated to 90.0°C and then placed in the water. The contents of the calorimeter come to a temperature of 23.9°C What is the specific heat of lead?

    asked on August 3, 2010
  35. Chem.

    Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1 degrees celcius. At what temperature does Benzene boil when the external pressure is 440 torr? Since...I didn't get the right answer. I'll just show my work and see if

    asked on February 10, 2010
  36. Chemistry

    The vapor pressure of liquid bromine at room temp is 168 torr. If the bromine is introduced drop by drop into a closed system containing air at 775 torr, what would the total pressure (in torr) be when no more bromine vaporized and a few drops of liquid

    asked on July 14, 2019
  37. S.S

    Which of the following was an event leading to the removal of Creeks and Cherokees in Georgia? (Choose all that apply.) A.the Treaty of Washington B.the Treaty of Ghent C.the Treaty of New Echota D.the addition of Florida as a U.S. territory* I think it is

    asked on August 30, 2018
  38. Physics

    In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the overhead view of the figure. The tire remains stationary in spite of the three pulls. Alex pulls with force of magnitude 226 N, and

    asked on October 8, 2010
  39. Chemistry

    An interference filter is to be constructed for isolation of the nitrobenzene absorption band at 1537 cm-1. (a) If it is to be based on first-order interference, what should be the thickness of the dielectric layer (refractive index of 1.34)? (b) What

    asked on February 26, 2016
  40. Chem.

    Ethanol has a heat of vaporization of 38.56 KJ/Mol. And a normal boiling point of 78.4 degrees celcius. WHAT is the vapor pressure of ethanol at 18 degrees celcius?? Okay...I don't really get out to solve for it actually. ln (P2/760 torr)= -38560/8.3145 *

    asked on February 10, 2010
  41. Physics

    Assume the gas is diatomic, calculate how much heat was added to the gas in the process. One mole of ideal gas initially at a temperature of Ti=0 Celsius undergoes an expansion at a constant pressure of 1.00 atm four times its orginal volume

    asked on November 29, 2015
  42. math

    a ship drops its anchor into the water and creates a circular ripple. the radius of this ripple increases at a rate of 50m/s a) find an equation for the circle 10 seconds after the anchor is dropped i got x^2+y^2=500? is that correct

    asked on June 23, 2019
  43. reading

    jerry spinelli milkweed what is the dramatic irony in the scene when misha accompanies janina`s family on their way to the ghetto? what is the effect of this device?

    asked on March 26, 2009
  44. social studies

    Which statement best explains the outcome of the Battle of the Rice Boats incident? A. The British surrendered the port and were forced to return to Britain. B. The patriots managed to drive the British from Savannah temporarily. C. The British were able

    asked on August 21, 2018
  45. anatomy physiology/check please

    Muscular dysgenesis or dysgeny is a lethal, recessive, genetic disease of mice that is caused by a mutation in the mdg gene. Skeletal muscles from dysgenic mice are paralyzed and the animals die shortly after birth. You are a research scientist interested

    asked on April 4, 2013
  46. chem

    The normal melting point of copper is 1357 K and heat of fusion of Cu is 13.05 KJ. How much heat, in kilojoules, is evolved when a 3.70 kg sample of of molten Cu freezes?

    asked on February 11, 2010
  47. math

    Mr. Dunn drives a 12 mile round trip 3 times a week to the dog park. How many miles does he drive?

    asked on January 12, 2016
  48. math

    the volume of a rectangular prism is 2,058 cm3. The length of the prism is three times the width. The height is 14 centimeters. Find the other dimensions

    asked on April 13, 2016
  49. social studies

    Which of the following statements best describes the role of a Georgia representative at the Constitutional Convention? A. William Pierce cast a vote, breaking a tie over the Bill of Rights. B. William Few voted with the large states, leading to the

    asked on August 22, 2018
  50. Math (Combinatorics)

    In how many ways can I place 5 different beads on a bracelet if flipping or rotating the bracelet does not change the order of the beads?

    asked on June 30, 2013
  51. Chemistry

    At 25oC, the equilibrium pressure of ammonia vapour above a 0.500 M aqueous ammonia solution is 0.84 kPa. Calculate the Henry's law constant for ammonia in M/bar. Do not include units. Include 4 significant figures.

    asked on February 8, 2018
  52. Physics

    The constant resistance of a resistor is 30 ohms, independent of the temperature. The resistor is made up of an aluminium resistor with resistance R1 at 0°C in series with a carbon resistor with resistance R2 at 0°C. Evaluate R1 and R2, temperature

    asked on October 8, 2017
  53. physic

    In a serious accident, a nuclear power plant's reactor vessel cracks, and all of the cooling water drains out. Although nuclear fission stops, radioactive decay continues to heat

    asked on May 6, 2014
  54. reading

    milkweed jerry spinelli what dop you think the fox-face furs with beady black eyes symbolize?

    asked on March 26, 2009
  55. organic chemistry

    Provide a structure for the following compound: C9H10O3; IR: 2400–3200, 1700, 1630 cm–1; 1H NMR: δ 1.53 (3H, t, J = 8 Hz); δ 4.32 (2H, q, J = 8 Hz); δ 7.08, δ 8.13 (4H, pair of leaning doublets, J = 10 Hz); δ 10 (1H, broad, disappears with D2O

    asked on February 19, 2015
  56. Chemistry

    How many resonance structures do these following acids have? H2CO3-carbonic acid H3PO4-phosphoric acid H2SO4-sulfuric acid HNO3-nitric acid CH3COOH- acetic acid CH2ClCOOH- chloroacetic acid CHCl2COOH- dichloroacetic acid CCl3COOH- trichloroacetic acid

    asked on November 4, 2014
  57. physics

    a stainless steel orthodontic wire is applied to a tooth.the wire has an upstretched length of 3.1cm and a radius of 0.11mm.if the wire is stretched 0.10mm,find the magnitude and direction of the force on the tooth.disregard the width of the tooth assume

    asked on November 19, 2018
  58. Functions

    Milk is leaking from a carton at a rate of 3mL/min. There is 1.2 L of milk in the carton at 11:00 a.m. How much will be left in the carton at 1:00 p.m.? f(x)=1200-3x

    asked on September 10, 2018
  59. Physics

    A progressive wave equation is given by y=a sin (200(pie)t -(pie)x/17) Find; 1) The wavelength 2) Velocity 3) Frequency 4) Period

    asked on December 21, 2018
  60. Inorganic Chemistry

    Which of the following species contain an inversion center? Choose all that apply. SeF6 [IF4]- SnF4 InH3

    asked on March 5, 2015
  61. Algebra 1

    A 10 meter rope is cut into two pieces so that one piece is equal to 5 meters longer than 4 times the shorter piece find the lengths to both sides

    asked on September 24, 2019
  62. organic chemistry

    Provide a structure for the following compound: C9H10O3; IR: 2400–3200, 1700, 1630 cm–1; 1H NMR: δ 1.53 (3H, t, J = 8 Hz); δ 4.32 (2H, q, J = 8 Hz); δ 7.08, δ 8.13 (4H, pair of leaning doublets, J = 10 Hz); δ 10 (1H, broad, disappears with D2O

    asked on February 20, 2015
  63. Science

    BP -164°C ΔHvap 8.136 kJ/mol sg 2.205 J/g°C MP -182°C ΔHfus 0.928 kJ/mol sl 2.41 J/g°C Using the data above for methane, CH4, calculate the heat needed to convert 150. g of liquid methane at -175°C to a gas at 25°C.

    asked on October 28, 2010
  64. Accounting

    Schmaltz, Inc. records its allowance for doubtful accounts based on an analysis of receivables. The current, unadjusted balance in Schmaltz’s Allowance for Doubtful Accounts is a credit balance of $28,000. Based on a year-end aging of accounts

    asked on March 11, 2019
  65. Science, Chemistry

    A 25.0 mL sample of a 0.0600 M solution of aqueous trimethylamine is titrated with a 0.0750 M solution of HCl. Calculate the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added; pKb of (CH3)3N = 4.19 at 25°C. I already calculated pH

    asked on November 6, 2017
  66. Science

    Consider the following reaction: 2Na + Cl2  2NaCl ΔH = -821.8 kJ (a) Is the reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when 5.6 g of Na reacts at constant pressure. (c) How many grams of NaCl are produced during an

    asked on August 3, 2010
  67. Inorganic Chemistry

    Which of the following molecules contain a C3 axis but not a σh plane? AlCl3 SeO3 SbBr3 PCl3

    asked on March 5, 2015
  68. math

    jewelry marked 14 karat gold is 14/24 pure gold. what is the percent

    asked on February 11, 2013
  69. Algebra 2

    Find the trigonometric ratios. Right triangle A B C has right angle C with side A B equal to 53, B C equal to 28, and C A equal to 45.

    asked on December 4, 2018
  70. math

    a girl walks 800 m on a bearing of 129 degrees.calculate how far east and south she is from her starting point.

    asked on May 16, 2016
  71. chemistry

    The first-order reaction, SO2Cl2 ¨ SO2 + Cl2, has a rate constant equal to 2.20 ~ 10-5 s-1 at 593 K. What percentage of the initial amount of SO2Cl2 will remain after 6.00 hours?

    asked on September 27, 2010
  72. Chemistry

    The initial concentration of NH3 in the zero order reaction NH3→3H2+N2 is 0.0312 M. After 30.0 seconds, the concentration of NH3 is 0.0302 M. What is the rate constant k for the reaction?

    asked on February 21, 2019
  73. Physics

    A spaceship of mass 2.1×10^6 kg is cruising at a speed of 5.0×10^6 m/s when the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 4.8×10^5 kg , is blown straight backward with a speed of 2.3×10^6 m/s . A second

    asked on November 11, 2015
  74. Inorganic Chemistry

    Which of the following species contain a C4 axis and a σh plane? Choose all that apply. [ICl4]- SiCl4 XeF4 GeH4 [PO4]3

    asked on March 5, 2015
  75. Science

    The normal boiling point for acetone is 56.5 Celsius. The atmospheric pressure is 630torr. What would be the boiling point of acetone, delta Hvap = 32.0 KJ/mol. What would be the vapor pressure of acetone at 25.0 Celsius. Please help me with this problem.

    asked on October 31, 2010
  76. Science

    Give the conjugate acid of the following bases: a) NH2-, b) CO3 ^2-, c) HS-, d) OH-

    asked on August 20, 2010
  77. Physics

    A spring 20cm long is stretched to 25cm by a load 5N. What will be it's length when stretched by 100N assuming that the elastic limit is not reached?

    asked on April 26, 2019
  78. Physics

    The radius of the planet Venus is nearly the same as that of the earth, but its mass is only 80% that of the earth, if an object weighs we on the earth, what does it weighs on Venus?

    asked on October 21, 2018
  79. chemistry

    What volume of oxygen at s.t.p is required for the complete combustion of methane according to the following equation. CH4 2O2= CO2 2H2O

    asked on January 10, 2013
  80. chemistry

    Sterling silver, an alloy of silver and copper, contains 7.5 percent copper by mass and has a density of 10.3 g/cm3. How many copper atoms are in a sterling silver sphere whose radius is 2.0 in?

    asked on August 2, 2010
  81. math

    John who is 15 years old, is 3 years older than his younger brother Paul. If James their brother is 21years old. What is the average of the three brothers

    asked on April 4, 2019
  82. Spanish

    Can you help me unscramble these two words? ngtialceoo, birol

    asked on February 19, 2013
  83. chemistry

    Calculate the pH of a 1.33 mol/L solution of HCN is the Ka value of HCN is 6.2x10^-12

    asked on April 9, 2008
  84. Math - Write about it

    If you add a ten thousands digit that is 2 times the ones digit to the number 2,794, what is the new number? How do you get this... Your question doesn't make sense they way it is written. If you really mean: "If you add a ten thousands digit that is 2

    asked on September 18, 2006
  85. Math

    A transversal intersects two lines. Which conditions would always make the two lines parallel? A) Vertical Angles are Congruent B) Alternate interior angles are congruent C) Corresponding angles are supplementary D) Same-side interior angles are

    asked on October 10, 2018
  86. algebra

    A pay for service internet company charges 4 dollars per hour for the first 7 hours of service plus a 5 dollar connection fee. What is the domain and range The domain i believe is 1, 2, 3, 4, 5, 6, 7 I don't know the range. Thank you

    asked on October 30, 2018
  87. Physics

    Michael Jordan has the record for the highest vertical jump at 48 inches (1.22m). While on the ground, he speeds up over a distance of 0.6 m to achieve the necessary launch speed. What acceleration does his legs provide in order to achieve his height?

    asked on October 19, 2015
  88. math

    convert 101101two to a number in base ten.

    asked on March 22, 2012
  89. Physics help please

    The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.030 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.055 kg and is initially at rest. The

    asked on November 7, 2010
  90. Computer Science

    This is the problem: The following HTML code fragment contains a reference to an image file called frog.gif and with alternate text set to froggy, but the code as written contains a number of errors. Write the HTML line correctly. (Note: this problem is

    asked on February 8, 2010
  91. Accounting

    Rutta company records its allowance for doubtful accounts based on 1.5% of annual credit sales. if credit sales for the current year were 10,000,000 what would be the journal entry

    asked on March 11, 2019
  92. physics

    a uniform beam 6.0m long and weighing 4kg on support of p and q placed let and right 1.0m from each end of the beam

    asked on February 21, 2016
  93. Chemistry

    Calculate the volume of 1.00 M acetic acid solution and mass of sodium acetate needed to make 250 mL of a 0.450 M acetic acid/acetate buffer solution with a pH of 4.00. (The pKa is 4.74 for acetic acid) *Please explain it in detail, don't leave a step out!

    asked on November 3, 2014
  94. Trigonometry

    An automobile tire has a diameter of 36 inches. How many revolution will the wheel make as the automobile travel 1 mile

    asked on December 15, 2015
  95. Calculus

    A rectangular storage container with an open top is to have a volume of k cubic meters. The length of its base is twice its width. The material for the base costs $6 per square meters and the material for the sides costs $10 per square meter.

    asked on April 9, 2015
  96. Precalculus

    Having trouble with this: Verify: csc^4x-cot^4x=2csc^2x-1 *the numbers after the carets are to the power of

    asked on December 9, 2010
  97. Physics please help cant figure this out

    starting with an initial speed of 5.00 m/s at a height of 0.265 m, a 1.75 kg ball swings downward and strikes a 4.45 kg ball that is at rest, as the drawing shows. (a) Using the principle of conservation of mechanical energy, find the speed of the 1.75 kg

    asked on November 5, 2010
  98. biology

    What is the outer edge of a cheek cell called? please urgent homework due tommorow

    asked on August 8, 2009
  99. Math

    Five years ago, a father was 3 times as old as his son. Now, their combined ages amount to 110 years. Thus, the present age of the father is?

    asked on September 4, 2017
  100. math algebra

    Sum the following term of progression to the last term, logx, logx^2 logx^3.... logx^120

    asked on February 12, 2017


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