Most popular questions and responses by ryan
  1. English

    Choose the word that best completes the sentences. One of the girls left _____ tennis shoes in the gym a. her b. hers c. their d. them I think its it A but it could also be c the best player to watch is ______ a. she b. her c. him d. me this one confuses

    asked on May 18, 2016
  2. Chemistry

    If you have 320.0 mL of water at 25.00 °C and add 110.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked on October 18, 2011
  3. geometry

    use Euler's formula to find the missing number. Vertices: 10 Edges: 29 Faces? This just totally confuses me

    asked on January 3, 2012
  4. Geometry

    A trapezoid has an area of 166.5 in.², a height of 9 in., and one base measuring 15 in. What is the length of the other base?

    asked on December 20, 2011
  5. geometry

    can someone help me please on this question: What is the diameter of a cone with height 8 m and volume 150 m3 ?

    asked on December 23, 2011
  6. Physics

    In a vertical dive a peregrine falcon can accelerate at 0.6 times the free-fall acceleration (that is at 0.06g) in reaching the speed of about 100 m/c. If a falcon pulls out of a dive into a circular arc at this speed and can sustain a radial acceleration

    asked on September 25, 2012
  7. geometry

    Supply the missing reasons to complete the proof Given: B congruent E and BC congruent to EC Prove: AC congruent to DC

    asked on November 27, 2011
  8. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.

    asked on March 3, 2010
  9. Chemistry Gas Law

    How many grams of Mg must react with HCl in order to produce 40.0 ml of hydrogen gas at 22 degrees celsius and 1.02 bar? If the magnesium ribbon weighs 1.83mg/mm, how many mm of the ribbon will you require? Thanks in advance for your help!!

    asked on May 12, 2015
  10. geometry

    Find the similarity ratio of a cube with a volume 512 m3 to a cube with volume 3,375 m3 how would you do this problem

    asked on January 12, 2012
  11. Chemistry

    How many grams of zinc metal are required to produce 2.00 L of hydrogen gas at STP according to the chemical equation shown below? Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)

    asked on June 4, 2015
  12. physics

    Drag-race tires in contact with an asphalt surface have a very high coefficient of static fric.tion. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 2.1 km in 8 s,

    asked on February 21, 2014
  13. geometry

    Isosceles trapezoid ABCD has legs AB and CD and base BC If AB = 7y – 4, BC = 4y – 6, and CD = 8y – 18, find the value of y.

    asked on November 25, 2011
  14. Chemistry

    Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to sweat, and it is determined that the heat of vaporization of its sweat is 155 cal/g. The scientist observing the

    asked on January 25, 2013
  15. Chemistry, Vapor Pressure

    Select the pair of substances in which the one with the higher vapor pressure at a given temperature is listed first. 1. C7H16, C5H12 2. CCl4, CBr4 3. H2O, H2S 4. CH3CH2OH, CH3-O-CH3 5. Xe, Kr

    asked on December 11, 2014
  16. chemistry

    write the steps of complete ionization of carbonic acid and hydro sulfuric acid.

    asked on May 12, 2012
  17. Math

    The tail on Alex's dog is 5 1/4 inches long this like this between which 2 inch March on a ruler

    asked on May 12, 2015
  18. CHemistry

    SO2(g) + H2O(l)= H2SO(l) What mass of sulfur dioxide is needed to prepare 36.86 g of H2SO3(l)

    asked on March 26, 2014
  19. Trig Help

    Given the equation for simple harmonic method d=1.3cos(3pi/4 t) answer the following questions: a)Find the maximum displacement. 1.i got 1.3 b)Find the frequency and length of the pendulum c)Calculate the value of d when t=3 i got .919 d)Determine the

    asked on March 24, 2016
  20. Statistics

    The weight of a bag of corn chips is normally distributed with a mean of 22 ounces and a standard deviation of 0.5 ounces. -The probability that a bag of corn chips weighs more than 21 ounces is? -The probability that a bag of corn chips weighs between

    asked on October 27, 2013
  21. Trigonometry

    Given the equation for simple harmonic method d=1/12 sin(60 pi t) answer the following questions: b)Find the frequency i got 60pi c)Calculate the value of d when t=3 d)Determine the least positive value of t for which d=0.

    asked on March 24, 2016
  22. Geometry

    A circle with the equation (x + 3)2 + (y - 2)2 = 25 is reflected over the line x = 2. What is the equation of the image?

    asked on January 18, 2012
  23. physics

    A ball is dropped from an upper floor, some unknown distance above your apartment. As you look out of your window, which is 1.5 m tall, you observe that it takes the ball 0.18 seconds to traverse the length of the window. Determine how high above the top

    asked on January 30, 2015
  24. Biochemistry

    If you want to lose 1 pound of "fat," which is 20% water, how many kilocalories do you need to expend?

    asked on September 1, 2012
  25. geometry

    Earth’s radius is about 4,000 mi. To the nearest mile, what is the distance a person can see on a clear day from an airplane 5 mi above Earth? help please!

    asked on January 4, 2012
  26. Check my answer?

    Conditional statement based on a Venn diagram 2 circles: large circle says quadrilaterals smaller inner circle says squares If a shape is a square then it is a quadrilateral.

    asked on September 29, 2014
  27. chemistry

    The vapor pressure of liquid chloroform, CHCl3, is 100. mm Hg at 283 K. A 0.198 g sample of liquid CHCl3 is placed in a closed, evacuated 400. mL container at a temperature of 283 K. Assuming that the temperature remains constant, will all of the liquid

    asked on November 11, 2014
  28. Statistics

    Sulfur compounds cause "off-odors" in wine, so winemaker want to know the odor threshold, the lowest concentration of a compound that the human nose can detect. The odor threshold for dimethyl sulfide (DMS) in trained wine tasters is about 25 micrograms

    asked on May 6, 2012
  29. Chemistry

    Complete ionic equation and net ionic equation for 2 K3PO4 + 3 Fe(NO3)2 --> 6 KNO3 + Fe3(PO4)2

    asked on March 26, 2014
  30. physics

    A rubber band has a"spring constant" of 45 N/m. When the rubber band is pulled by a force of 9.8 N , how far will it stretch and what is potential energy?

    asked on March 10, 2013
  31. social studies

    Explain how the civic virtues of the ancient Romans inspired the Founding Fathers' vision of how citizens should conduct themselves in the United States.

    asked on November 6, 2018
  32. PreCalculas

    The psychological sensation of loudness B is measured in decibels and is defined with reference to the intensity, , of a barely audible sound by the following equation. In this equation, I is the intensity of the sound in question. B=10log 1/1o If the

    asked on November 30, 2015


    asked on November 29, 2011
  34. geometry

    1 and 2 are a linear pair. M1=x-35, and m2=x+83. find the measure of each angle

    asked on November 27, 2011
  35. Math

    Find how many quarts of 4% butterfat milk and 1% butterfat milk should be mixed to yield 90 quarts of 2 % butterfat milk.

    asked on January 6, 2013
  36. Statistics

    Does a football filled with helium travel farther than one filled with ordinary air? To test this, the Columbus Dispatch conducted a study. Two identical footballs, one filled with helium and one filled with ordinary air, were used. A casual observer was

    asked on May 21, 2012
  37. Chemistry

    Perpare 500ml of 1M HCl solution from a bottle of concentrated 37%(W/W) HCL stock with a density of 1.19g/ml. 37%= 37/100 x 100 therefore mass is 37g molarity = mol/vol 1= mol/0.5 mol=0.5 mass of Hcl needed = molxmr mass = 0.5 x 36.5 mass = 18.25g

    asked on April 30, 2017
  38. Trigonometry

    if cos x=2/3 and x is in quadrant 4 find tan(x/2),sin(x/2),and cos(x/2) i got sin(x/2)=squr 1/6 tan(x/2)=squr 2/6 cos(x/2)=squr 5/6

    asked on April 5, 2016
  39. accounting

    Kiddy Toy Corporation needs to acquire the use of a machine to be used in its manufacturing process. The machine needed is manufactured by Lollie Corp. The machine can be used for 10 years and then sold for $11,000 at the end of its useful life. Lollie has

    asked on October 25, 2008
  40. geometry

    M right angle R= 120 degrees and M right angle S = 100 degrees find mrightangleT

    asked on November 24, 2011
  41. physics

    As a civil engineering intern during one of your summer in college, you are asked to design a curved section of roadway that meets the following conditions: when ice is on the road, and the ceefficient of static friction between the road and rubber is

    asked on October 14, 2009
  42. Chem5

    A dioxin-contaminated water source contains 0.052% dioxin by mass. How much dioxin (in g) is present in 4.2 liters of this water? (Assume the solution density is 1.00 g/mL.)

    asked on May 2, 2011
  43. Physics

    An electron's position is given by r = 2.00t i - 7.00t2 j + 5.00 k, with t in seconds and r in meters. (a) In unit-vector notation, what is the electron's velocity v(t)? (Answer in terms of i, j, k, and t.) (b) What is v in unit-vector notation at t = 2.00

    asked on September 13, 2009
  44. Chemistry

    What happens in the artificial transmutation of an element? Can you give an example?

    asked on January 16, 2012
  45. math

    A couple purchasing a home budget $1700 per month for their loan payment. If they have $15,000 available for a down payment and are considering a 25-year loan, how much can they spend on the home at each of the following rates? (Round your answers to the

    asked on May 1, 2011
  46. Math/Finance

    You have found the following stock quote for RJW Enterprises, Inc., in the financial pages of today's newspaper. 52 Week High: 72.18 Low: 43.17 Stock (DIV): RWJ 1.28 Yield (%): 2.1 PE: 21 VOL (100s): 17652 Close: ???? Net change: -.23 What was the closing

    asked on November 18, 2015
  47. MATH 4 GRADE

    Nigel cut a loaf a bread into 12 equal slices. His family ate some of the bread and now 5/12 is left. Nigel wants to put each of the leftover slices in its own bag. how many bags does Nigel need?

    asked on February 16, 2016
  48. geometry

    complete the two-column proof given: x/6+2=15 prove: x=78

    asked on November 27, 2011
  49. Physics

    A wasp accumulates 1.0x10^-14C of charge while flying perpendicular to the earth's magnetic field of 4.0X10^-5T. How fast is the wasp flying if the magnetic force acting on it is 3.0x 10^-16N?

    asked on April 10, 2017
  50. Science

    How much methanol, CH3OH (d = 0.792g/mL), in milliliters, must be dissolved in water to produce 2.15L of 0.470 M CH3OH?

    asked on September 13, 2011
  51. English

    Describe the relationship between Tasha and Junior in “The Tail.” Use examples from the story to support your answer. (At least 2-3 sentence's please.)

    asked on September 10, 2019
  52. Chemistry

    When 50 grams of hydrocarbon X are burned with oxygen the products are carbon dioxide and water. If 65 grams of water and 100 grams of carbon dioxide are produced, how many grams of oxygen were needed for the reaction? This was a question on my chemistry

    asked on February 28, 2016
  53. geometry

    A triangular playground has angles with measures in the ratio 8 : 7 : 5. What is the measure of the smallest angle

    asked on November 27, 2011
  54. chemistry lab

    Here are 2 questions I worked out, but need them checked. Also, can't get answer to another question correct unless question 1 is correct. Would you check the first 2 and help me with the third? 1) What is the pH of a 0.05 M solution of TRIS acid (pka =

    asked on February 2, 2008
  55. physics

    William Tell shoots an apple from his son's head.The speed of the 125-g arrow just before it strikes the apple is 25.0m/s, and the time of impact it is travelling horizontally.If the arrow strikes in the apple and the Arrow/Apple combination strikes 8.50m

    asked on October 28, 2009
  56. Algebra 2

    To solve 49(3x) = 343(2x+1), write each side of the equation in terms of base what? . In the brackets are powers. I tried to solve this but I don't understand I believe it is the first base you go off from but I'm not sure what I'm doing and a reassurance

    asked on February 23, 2016
  57. Chem16

    The reaction SO2Cl2(g)--> SO2(g) + Cl2(g) has Kc = 2.99 x 10-7 at 227 degrees C. If a reaction mixture initially contains 0.166 M SO2Cl2, what is the equilibrium concentration of Cl2 at 227 degrees C?

    asked on May 2, 2011
  58. Chemistry

    An aqueous solution that 2.10 M in AgNO3 is slowly added from a buret to an aqueous solution that is 1.20×10^−2 M in Cl- and 0.260 M in I- . When the second ion begins to precipitate, what is the remaining concentration of the first ion?

    asked on March 16, 2012
  59. gemetry

    name the intersection of plane QMW and plane RMW

    asked on November 27, 2011
  60. College Physics

    Calculate the rotational inertia of a meter stick, with mass 0.58 kg, about an axis perpendicular to the stick and located at the 43 cm mark. (Treat the stick as a thin rod.) I know I = (1/12)(M)(L^2) and then I need to use the parallel-axis theorem so I

    asked on December 1, 2009
  61. Chem

    How many atoms are in 1.75 mol CHCl3?

    asked on November 13, 2007
  62. triangles

    The measures of two of the sides of an equilateral triangle are 3x + 15 in. and 7x – 5 in. What is the measure of the third side in inches?

    asked on November 4, 2011
  63. trig

    Given that tan B= 7/24 with B in quadrant III, find sin 2B, cos 2B, and tan 2B, using angle identities.

    asked on October 11, 2011
  64. 5th Gr Math

    Mikail used 220 inches of wire to make this figure. The figure is made up of 2 indentical triangles, a 15 inch by 12 inch rectangle & a square of side 19 inches. What is the length of 1 side of each triangle if all the sides of the triangles are equal in

    asked on November 12, 2012
  65. Calculus

    A chain 64 meters long whose mass is 20 kilograms is hanging over the edge of a tall building and does not touch the ground. How much work is required to lift the top 3 meters of the chain to the top of the building?

    asked on September 29, 2012
  66. physics

    When you go out to your car one cold winter morning you discover a 0.54 cm thick layer of ice on the windshield, which has an area of 1.6 m2. If the temperature of the ice is -4.1°C, and its density is 917 kg/m3, find the heat required to melt all the

    asked on April 26, 2010
  67. geometry

    totally brain dead please help Find the missing value to the nearest hundredth Tan _______ = 7 I forgot how to do this

    asked on January 12, 2012
  68. math

    A=1/2h (b1 + b2) Solve for b1 A=1/2h (b1 + b2) Solve for b1 I assume this is A = (1/2)(h)(b1 + b2); i.e., the h is in the numerator and not the denominator Multiply both sides by 2. 2A = (2*1/2)h(b1 + b2). 2*1/2 on the right side is 1. 2A = h(b1 + b2)

    asked on August 15, 2006
  69. Trigonometry Help please

    1.Explain the relationship(s) among angle measure in degrees, angle measure in radians, and arc length.

    asked on February 20, 2016
  70. Chemistry

    A quantity of ice at 0.0°C was added to 25.6 g of water at 21.0°C to give water at 0.0°C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(g · °C). I don't understand how to set this problem up (what

    asked on October 8, 2008
  71. Trigonometry

    1. sin^2 theta+cos theta=2 (Hint: Use the Pythagorean identity sin^2 theta+cos theta=1 to replace sin^2 theta in the given equation.) I got no solution

    asked on March 25, 2016
  72. English

    Which did Anton have more allegiance to: his caste of genetically enhanced beings or his brother?

    asked on November 18, 2016
  73. Math

    Writing to Explain Draw a decimal model and write 0.78 as a fraction in simplest form.

    asked on November 7, 2012
  74. Math

    In parallelogram WXYZ, m

    asked on February 15, 2011
  75. Science

    What were five accomplishments of marie curie?

    asked on October 6, 2015
  76. Calculus

    Can someone help me solve these two questions? Thanks 1) Use the mid-point rule with n = 4 to approximate the area of the region bounded by y = -x^3 and y = -x. 2) A rock is thrown upward with a speed of 48 feet per second from the edge of a cliff 400 feet

    asked on July 15, 2018
  77. Social Studies

    Which is the most important function of banks in an economy? A. extending credit B. guarding savings C. providing mutual fund options D. managing employee pay systems __________ Customers cannot purchase every product. How does this fact affect companies

    asked on September 11, 2019
  78. Stoichiometry

    Suppose you wanted to add just enough 0.40M calcium chloride solution to 75.0mL of 0.60M of sodium carbonate solution for all of the sodium carbonate and calcium chloride to react. a) What volume of 0.40M calcium chloride solution would be required?

    asked on November 27, 2016
  79. less cliche way to say best of both worlds

    what is a less cliche way to say best of both worlds? Im writing for my college applications

    asked on October 29, 2009
  80. algebra

    Monica earned $60 from a bonus plus $8.50 per hour (h) she worked this week. Which of the following expressions best represents Monica's income for the week?

    asked on October 28, 2015
  81. Spanish

    In this unit, you learned about several states that border Mexico. Write a short paragraph that describes at least two similarities and two differences between those states

    asked on September 26, 2017
  82. geometry

    m angle R=130 and m angle S=80. Find m angle T. The diagram is not to scale. Hint: draw the diagonals and use propertied of triangles. I totally don't understand this one

    asked on November 27, 2011
  83. geometry

    if EF=9x+14, FG=56, and EG=250, find the value of x.

    asked on November 27, 2011
  84. Chemistry

    Steam at 100°C was passed into a flask containing 250 g of water at 21°C, where the steam condensed. How many grams of steam must have condensed if the temperature of the water in the flask was raised to 76°C? The heat of vaporization of water at 100°C

    asked on October 8, 2008
  85. Chemistry

    Aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water. Suppose 61. g of hydrobromic acid is mixed with 41.1 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by

    asked on January 15, 2016
  86. Chemistry

    If a silver wire is placed in a beaker containing 1 M Cu(NO3)2, what will happen? I don't think anything will happen, but what is the right way to explain this is chemical terms?

    asked on March 24, 2010
  87. english

    True or False: the following sentence demonstrates parallelism: Cameron is an actor, a writer, and former model. true

    asked on December 13, 2017
  88. Chemistry

    1) Consider the following substance: V3N5. What is the oxidation number of vanadium and nitrogen? 2) Consider the following substance: Mn2O7. What is the oxadation number of manganese and oxygen? 3) Consider the following reaction: Al2(SO4)3. What is the

    asked on January 13, 2012
  89. physics

    A horizontal pipe of diameter 0.845 m has a smooth constriction to a section of diameter 0.507 m. The density of oil flowing in the pipe is 821 kg/m3 . If the pressure in the pipe is 8350 N/m2 and in the constricted section is 6262.5 N/m2 , what is the

    asked on June 17, 2011
  90. operating system


    asked on October 27, 2009
  91. physics

    A 4.50 kg block is pressed against a vertical wall by a force (→F), as shown in the figure below. The coefficient of static friction between the block and the wall is 0.34 and the directional angle θ for the force is 48.0°. Determine the magnitude of

    asked on September 25, 2018
  92. AP Calculus

    Can someone help me solve these two questions? Thanks 1) Use the mid-point rule with n = 4 to approximate the area of the region bounded by y = -x^3 and y = -x. 2) A rock is thrown upward with a speed of 48 feet per second from the edge of a cliff 400 feet

    asked on July 15, 2018
  93. Physics

    Miss E. deWater, the former platform diver of the Ringling Brothers' Circus, dives from a 80.0-meter high platform into a shallow bucket of water (see diagram at right). Determine her speed and her height after each second of fall. When t = 0 s: speed = 0

    asked on November 6, 2015
  94. geometry

    What is the sum of the angle measures of a 37-gon?

    asked on November 25, 2011
  95. Math

    An old book listed that 72 turkeys were bought for $\$\square.\square\square$ each, at a total cost of $\$\square 67.9\square.$ What was the cost of each turkey, if each $\square$ stands for a digit that was unreadable in the old book? Note: The $\square$

    asked on September 3, 2016
  96. physics

    An airplane moves 243 m/s as it travels around a vertical circular loop which has a radius of 1.2 km. What is the magnitude of the normal force on the 100 kg pilot of this plane at the bottom of this loop? The acceleration of gravity is 9.8 m/s 2 . Answer

    asked on December 12, 2011
  97. physics

    You throw a softball (of mass 300 g) straight up into the air. It reaches a maximum altitude of 10.1 m and then returns to you. What is the gravitational potential energy of the softball at its highest position? Assume the ball departed from and returned

    asked on November 7, 2012
  98. Stoichiometry chem

    How many moles of carbon are found in 250.0 g of CaCO3? I started off with finding the molar mass of CaCO3, which is 100.09g. From there I divided 250g by 100.09g, but I have no idea what to do from there.

    asked on June 27, 2015
  99. Chemistry

    Once the adsorbent is packed in a liquid chromatography column, it is important that the level of the elution solvent not drop below the top of the adsorbent. Why?

    asked on February 4, 2015
  100. geometry

    Fiven the line F is parallel to line g, find the value of x. Line f is 3x Line g is 6x+45

    asked on November 27, 2011


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