Most popular questions and responses by Ana
  1. Art

    Bourgeois by Alfred Jacob Miller Look at the following illustration of an early american settler. it would likely inspire a writer to create a story based on all of the following historic information except A) the clothing worn by the individuals B) the

    asked on September 30, 2015
  2. Health

    An individuals self-esteem stays the same throughout their life: A - true B - false ** Self-actualization means that you focus on yourself all the time A - true B - false ** Which of the following is a skill you can practice to improve your self-esteem? A

    asked on October 3, 2016
  3. Physics

    Canadian geese migrate essentially along a north-south direction for well over a thousand kilometers in some cases, traveling at speeds up to about 100 km/h. If one such bird is flying at 100 km/h relative to the air, but there is a 38.0km/h wind blowing

    asked on February 19, 2014
  4. Chemistry - Science (Dr. Bob222)

    Use the following information to answer this question: Cu+(aq) + e- → Cu(s) E° = 0.521V Cu2+ (aq) + e- → Cu+ (aq) E° = 0.153 V. Given these half cell reactions, an aqueous solution of Cu+ ion in the absence of O2(g) : A. will be thermodynamically

    asked on May 3, 2014
  5. physics

    Two springs, with force constants k1=175N/m and k2=270N/m, are connected in series When a mass m=0.50kg is attached to the springs, what is the amount of stretch, x?

    asked on March 27, 2017
  6. Chemistry

    Citric acid, the compound responsible for the sour taste of lemons, has the following elemental composition: C{\rm C}, 37.51%\%; H{\rm H}, 4.20%\%; O{\rm O}, 58.29%\%.Calculate the empirical formula of citric acid

    asked on March 5, 2014
  7. chemistry

    when ammonia is added to Zn(NO3)2 solution, a white precipitate forms, which dissolves on the addition of excess ammonia. But when ammonia is added to a mixture of Zn(NO3)2 and NH4NO3, no precipitate forms at any time. Suggest an explanation for this

    asked on April 2, 2011
  8. Chemistry

    A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen. Based on these

    asked on August 29, 2010
  9. chem

    When the valve between the 2.00-L bulb, in which the gas pressure is 2.00 atm, and the 3.00-L bulb, in which the gas pressure is 4.50 atm, is opened, what will be the final pressure in the two bulbs? Assume the temperature remains constan

    asked on October 17, 2011
  10. chemistry

    Tetraphosphorus trisulphide (P4S3) is used in the match heads of some matches. It is produced in the reaction 8P4+3S8 --> 8P4S3. Determine which of the following statements are incorrect, and rewrite the incorrect statements to make them correct. a. 4 mol

    asked on April 6, 2010
  11. math

    Given the position function, s of t equals t cubed divided by 3 minus 12 times t squared divided by 2 plus 36 times t, between t = 0 and t = 15, where s is given in feet and t is measured in seconds, find the interval in seconds where the particle is

    asked on April 26, 2015
  12. Physics

    Two 0.4 kg soccer balls collide elastically in a head-on collision. The first ball starts at rest, and the second ball has a speed of 3.5 m/s. After the collision, the second ball is at rest. A.) What is the final speed of the ball? B.) What is the kinetic

    asked on December 17, 2012
  13. physics

    A tennis ball is dropped from 1.76 m above the ground. It rebounds to a height of 0.928 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s 2

    asked on September 21, 2019
  14. science

    erosion and weathering are examples of which types of forces? A constructive forces B destructive forces***** C gravitational forces D inertia-related forces please check my answer

    asked on November 5, 2015
  15. physics question

    A skateboarder at a skate park rides along the path shown in (Figure 1) .a=2.7 m and b=1.0m Part A If the speed of the skateboarder at point A is v=1.6m/s, what is her speed at point B? Assume that friction is negligible.

    asked on April 9, 2017
  16. science

    Which of the following is an example of inbreeding? A) a farmer chooses the cos in his or her herd that produce he most milk and breeds only those cows. b) a farmer chooses the cows in his or herd that produces the most milk and breeds them with cows that

    asked on October 19, 2015
  17. History

    Read the Summary The French Revolution was in actuality two revolutions (1). The first overthrew the stronghold of the Roman Empire as absolute rulers of the nation (2). The years in between the two revolutions were marked by fighting between Catholics and

    asked on August 2, 2018
  18. Math

    Find the first 3 common multiples for 6,7,8.

    asked on October 19, 2014
  19. Chemistry - Science (Dr. Bob222)

    Ammonium metavanadate reacts with sulfur dioxide in acidic solution as follows (hydrogen ions and H2O omitted): xVO3^–^ + ySO2 → xVO^2+^ + ySO4^2–^ What is the ratio of x : y? A. 1 : 1 B. 1 : 2 C. 2 : 1 D. 1 : 3 E. 3 : 1

    asked on May 3, 2014
  20. language arts

    in ¨Harriet Tubman¨ what main idea do the details about William still´s records support? A) the fugitives´ trip north was difficult. b) the escaping slaves were not able to carry much with them as they traveled north. c) Harriet Tubman was justified i

    asked on October 14, 2015
  21. chemistry

    4g of a mixture of CaCO3 and sand is treated with an excess of HCl and 0.88g of CO2 is produced. What is the percentage of CaCO3 in the mixture

    asked on February 17, 2015
  22. chemistry

    Determine the electron geometry, molecular geometry, and idealized bond angles for each of the following molecules. In which cases do you expect deviations from the idealized bond angle?1.pf3 2.sbr2 3.ch3br 4.bcl3

    asked on August 23, 2012
  23. Chemistry - Science (Dr. Bob222)

    The following reaction has a positive value of ΔG°. 2H2O(g) → 2H2(g) + O2(g) Which of the following statements must be true? A. The reaction is slow. B. The reaction will not occur. That is, when H2O(g) is introduced into a flask, no O2 or H2 will form

    asked on May 7, 2014
  24. Physics

    Four objects - a hoop, a solid cylinder, a solid sphere, and a thin, spherical shell - each has a mass of 4.59 kg and a radius of 0.252 m. (a) Find the moment of inertia for each object as it rotates about the axes shown in the table above. hoop____ kg·m2

    asked on March 19, 2010
  25. Physics

    A 0.006-kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 21.1-kg door, imbedding itself 10.4 cm from the side opposite the hinges as in the figure below. The 1.00-m-wide door is free to swing on its hinges. (c) At what angular speed

    asked on March 19, 2010
  26. calculus

    A water tank has the shape of an inverted right circular cone with base radius 3 meters and height 6 meters. Water is being pumped into the tank at the rate of 12 meters3/sec. Find the rate, in meters/sec, at which the water level is rising when the water

    asked on April 25, 2015
  27. Physics College - Circular motion

    At time t1 = 2.00 s, the acceleration of a particle in counterclockwise circular motion is (6.00 m/s2) i^+ (4.00 m/s2) j^. It moves at constant speed. At time t2 = 5.00 s, its acceleration is (4.00 m/s2) i^+ (-6.00 m/s2) j^. What is the radius of the path

    asked on September 21, 2014
  28. Chemistry

    A 5.00 g mixture of methane (CH4) and ethane (C2H6) is combusted in oxygen gas to produce carbon dioxide and water. If 14.09 g of CO2 is produced, how many grams of methane was in the original 5.00 g mixture ?

    asked on January 21, 2015
  29. Chemistry

    An excess of zinc is added to 125 mL of 0.100 M HCl solution, What mass of zinc chloride is formed? Zn + 2HCl ----> ZnCl2 + H2

    asked on April 29, 2010
  30. Chemistry

    Br2 + 5F2 --> 2BrF5 How many molecules Br2 react with 1.11 x 10^20 molecules F2? I got 2.21 x 10^47 but I feel that's too big and is most likely wrong. Can someone help me?

    asked on March 4, 2010
  31. stats

    Jason, a freshman at a local college, just completed 15 credit hours. His grade report is presented below. Course: Calculus, Biology, English, Music, P.E. Credit Hours 5, 4, 3, 2, 1 Grades C, A, D, B, A The local university uses a 4 point grading system,

    asked on September 15, 2016
  32. Math Decimals

    Jason has 4 tiles. Each tile has a number printed on it. The numbers are 2,3,6, and 8. A decimal number is formed using the tiles and the clues. Be a math detective and find the number. Clues: digit in tens place is the greatest number. digit in tenths is

    asked on October 12, 2015
  33. (12)Chemistry - Science (Dr. Bob222)

    Calculate delta E for a process in which 88.0 g of nitrous oxide gas (N2O) is cooled from 165 ˚C to 65 ˚C at a constant pressure of 5.00 atm. The molecular weight of nitrous oxide is 44.02 g/mol, and its heat capacity at constant pressure, Cp, is 38.70

    asked on May 8, 2014
  34. Physics

    A 1.80-cm-thick wood floor covers a 4.0 m times 5.5 m room. The subfloor on which the flooring sits is at a temperature of 16.1C, while the air in the room is at 19.2 C. What is the rate of heat conduction through the floor? Use 0.200 W/m* K for the

    asked on December 3, 2009
  35. calculus

    A cooling tower for a nuclear reactor is to be constructed in the shape of a hyperboloid of one sheet. The diameter at the base is 260 m and the minimum diameter, 500 m above the base, is 200 m. Find an equation for the tower. (Assume the center is at the

    asked on July 8, 2013
  36. Chemistry

    How many copper atoms are in a pure copper statue with a mass of 139kg{\rm kg}

    asked on March 5, 2014
  37. AP Chem

    A student placed 17.5 g of glucose in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mL mark on the neck of the flask was reached. The flask was then shaken until the

    asked on October 19, 2009
  38. Physics

    On a cool morning, when the temperature is 13 C, you measure the pressure in your car tires to be 30 psi. After driving 50 mi on the freeway, the temperature of your tires is 42C. What pressure will your tire gauge now show? T1 = 13 C T2 = 42 C P1 = 30 psi

    asked on November 19, 2009
  39. chemistry

    a 0.0500 mol sample of a nutrient substance is burned in a bomb calorimeter containing 2.00 x 10^2g H2O. If the formula weight of this nutrient substance is 114g/mol, what is the fuel value (in nutrient Cal) if the temperature of the water increased 5.70C

    asked on April 15, 2014
  40. physics

    To stretch a certain spring by 2.00 cm from its equilibrium position requires 9.50 J of work. a. What is the force constant of this spring? b. What was the maximum force required to stretch it by that distance?

    asked on March 6, 2011
  41. Physics

    How many grams of water (H_2O) have the same number of oxygen atoms as 1.0 (mol} of oxygen gas? atomic mass of H is 1 and O is 16, so H2O has a molar mass of 18. Oxygen gas is O2, with a molar mass of 32. So 1.0 mole of oxygen gas has 6.02x10^23 molecules

    asked on November 18, 2009
  42. Physics

    The 3.0 cm-diameter water line splits into two 1.0cm-diameter pipes. All pipes are circular and at the same elevation. At point A, the water speed is 2.0m/s and the gauge pressure is 50kPa. What is the gauge pressure at point B?(pointing toward one of the

    asked on November 17, 2009
  43. Algebra 2

    The Formula s= sqrt 30fd can be estimated the speed of s, in miles per hour that a car is traveling when it goes into a skid, where f is the coefficient of friction and d is the length of the skid marks in feet. Kody skids to a stop on a street with a

    asked on January 21, 2013
  44. english

    In "The Maori: Genealogies and Origins in New Zealand,” which evidence best helps the reader infer that the Maori people live in a difficult climate?

    asked on September 16, 2015
  45. Math

    Jaden wants to cover the floor with square tiles the same size. The floo measures 315 inches by 108 inches. If she uses only whole tiles, find A) the greatest possible length of each tile B) the number of tiles needed to cover the floor.

    asked on December 26, 2012
  46. Chemistry

    1.2048g sample of impure Na2CO3 is dissolved and allowed to react with a solution of CaCl2 resulting CaCO3 after precipitation, filtaration and drying was found to weight 1.0362g. calculate the percentage purity of Na2CO3

    asked on February 14, 2015
  47. Chemistry

    2KClO3 --> 2KCl + 3O2 What mass of O2 can be made from heating 125 g of KClO3? I know that the answer is 49 g O2 but I keep getting a completely different answer, can anyone show me what I'm doing wrong? 125g KClO3 x (2 mol KClO3/ 122.49g KClO3) = 2.04 mol

    asked on March 2, 2010
  48. Chemistry

    How many molecules of BrF2 form when 384g Br2 react with excess F2? equation: Br2 + 5F2 ---> 2BrF5 I really just need the guidelines to figure out the problem, i can figure out the rest from there. Please and thank you.

    asked on February 28, 2010
  49. Calculus

    The shoreline of a lake is a circle with diameter 3 km. Peter stands at point E and wants to reach the diametrically opposite point W. He intends to jog along the north shore to a point P and then swim the straight line distance to W. If he swims at a rate

    asked on June 20, 2017
  50. Math

    Clay has $60.00. He wants to leave a 20% tip on his restaurant bill. On which bill total could Clay leave a 20% tip? Select 3 answers. A.$48.53 B.$49.75 C.$54.99 D.$61.60 E.$58.80 F.$50.00 Pls help

    asked on September 19, 2019
  51. Algebra

    If sin A=-7/25 and angle A terminates in Quadrant IV, cos A equals.. A. -24/25 B. -7/24 C. 24/25 D. 7/24 PLEASE HELP

    asked on April 27, 2016
  52. Algebra

    Gerry had a total of 30 pens and pencils. He decided to trade with his friends all of his pens and pencils. If he traded every pen for 2 pencils, he would have 48 pencils in all. How many pens and how many pencils did he have before the trade?

    asked on November 19, 2014
  53. chemistry

    how could one distinguish 1-octanol from 1-octene and toluene from 1- octene?

    asked on October 8, 2009

    Two springs, with force constants k1=175N/m and k2=270N/m, are connected in series, as shown in (Figure 1) . Part A: When a mass m=0.50kg is attached to the springs, what is the amount of stretch, x? k1 I k2 I m ? ] x

    asked on March 28, 2017
  55. Social Studies

    What can you tell me about the Lesson 9 Unit Test. It's the Later Civilizations of East Asia.

    asked on March 3, 2019
  56. Chemistry

    I have these two questions on my section review that I don't know how to answer. Can someone help me? Please and thank you. 3. Describe in your own words how to prepare 100 mL of a .85 M solution of sodium chloride. 4. If you dissolve 2.00 mol KI in 1.00 L

    asked on April 29, 2010
  57. Physics

    The gravitational force of attraction between two students sitting at their desks in physics class is 2.34 ✕ 10^-8 N. If one student has a mass of 45.0 kg and the other student has a mass of 61.6 kg, how far apart are the students sitting?

    asked on February 9, 2018
  58. AP Statistics

    A study sought to determine whether the ancient Chinese art of acupuncture could help infertile women become pregnant. 160 healthy women undergoing treatment for infertility were recruited for the study. Half of the subjects were randomly assigned to

    asked on August 20, 2014
  59. math

    The side length of a rectangular box with a square base is increasing at the rate of 2 ft/sec, while the height is decreasing at the rate of 2 ft/sec. At what rate is the volume of the box changing when the side length is 10 ft and the height is 12 ft?

    asked on April 26, 2015
  60. College Chemistry (DrBob222)

    The decomposition of HCO2H follows first-order kinetics. HCO2H(g) CO2(g) + H2(g) The half-life for the reaction at a certain temperature is 44 seconds. How many seconds are needed for the formic acid concentration to decrease by 73%?

    asked on April 16, 2014
  61. us history

    which of the following describes the first British colony at Jamestown? a) it did not have the right sol and climate for tobacco crops. b) the settlers there had a lack of fresh water. c) the colony would not have thrived without the Powhatan tribe.******

    asked on October 30, 2015
  62. geometry

    Which of these is a correct step in constructing congruent line segments? a) use a straightedge to draw two equal arcs from the endpoints. b) use a compass to join the endpoints of the line segment. c) use a straightedge to measure the length of the line

    asked on October 5, 2015
  63. social studies

    which is the main climate in cyprus 1. tropical and dry 2. continental cool summer 3 mediterranean 4 humid subtropical

    asked on March 3, 2015
  64. physics

    a plane flying due north at 100 m/s is blown by a. 50 m/s strong wind due east. b. what is the plane's resultant velocity?

    asked on July 1, 2017
  65. Physics

    How many atoms of hydrogen are in 220g of hydrogen peroxide (H2O2)? This is what I did so far: the molecular weight of H2O2 = 2*1 +2*16 =34 therefore, there are 220/34 moles of the molecule = 6.47 moles, so there are 6.47xAvogadro's number of molecules

    asked on November 20, 2009
  66. Social Studies

    Can you explain the later civilizations of East Asia Unit Test.

    asked on March 3, 2019
  67. Algebra

    Chantel drew a picture of her dog on a piece of paper that is 12 centimeters long. She used a copy machine to enlarge her drawing. She used the 115% setting to make each new copy. She then used each new copy, using the same copier setting. Enter an

    asked on April 27, 2016
  68. calculus

    A cooling tower for a nuclear reactor is to be constructed in the shape of a hyperboloid of one sheet. The diameter at the base is 260 m and the minimum diameter, 500 m above the base, is 200 m. Find an equation for the tower. (Assume the center is at the

    asked on July 8, 2013
  69. Honors Chemistry

    Fe2O3 + 2Al --> 2Fe + Al2O3 How many grams of Fe will form when 97.6g Al2O3 form? Please & Thank you

    asked on February 23, 2010
  70. physics

    the magnetic force on a straight 0.15m segment of wire carrying a current of 4.5 A is 1.0 N. What is the magnitude of the component of the magnetic field that is perpendicular to the wire?

    asked on May 17, 2012
  71. physics

    0.75 mol of argon gas is admitted to an evacuated 40 cm^{3} container at 40 C. The gas then undergoes an isochoric heating to a temperature of 500 C.

    asked on December 11, 2009
  72. Physics

    What is the gas pressure inside the box shown in the figure? I have a picture but website wouldn't allow me to post the link for the picture. So I am trying my best to describe it. it is a u-shape tube and it is holding mercury in it. One side has 16cm of

    asked on November 15, 2009
  73. Physics

    Packing material made of pieces of foamed polystyrene can easily become charged and stick to each other. Given that the density of this material is about 35 kg/m^3, estimate how much charge might be on a 2.5 cm diameter foamed polystyrene sphere, assuming

    asked on September 7, 2015
  74. chemistry - Science

    A zinc-copper battery is constructed as follows (standard reduction potentials given below): Zn | Zn2+ (0.10 M) || Cu2+ (2.50 M) | Cu Zn2+ + 2 e- → Zn(s) Eº = -0.76 V Cu2+ + 2 e- → Cu(s) Eº = 0.34 V The mass of each electrode is 200 g. Each half-cell

    asked on May 3, 2014
  75. Chemistry

    Can zinc (Zn) react with one of these: Al(NO3)3 aluminum nitrate Mg(NO3)2 magnesium nitrate Zn(NO3)2 zinc nitrate Cu(NO3)2 copper nitrate?

    asked on March 7, 2010
  76. Math

    Nine boxes contain cans of different weights. How could you redivide the cans so each box weighs the same? There is 1 box with cans and the box weights ⅓, 1 box weights ⅔, 2 boxes weights 1⅓, 2 boxes weights 2⅔, and 3 boxes weights 3 pounds.

    asked on April 1, 2018
  77. chemistry

    calculate the OH- concentration in (a) 1.0M NH3 and (b) a solution that is 1.0M in NH3 and also 1.0M in NH4Cl. (Kb = 1.8 x 10^-5 for NH3)

    asked on April 2, 2011
  78. science

    Earth titled axis affects the strength of sunlight in different places of earth's surface. If you are in an area that receiving less direct sunlight,where are you located? a) near the equator b) near the north pole c) near the south pole d) near the north

    asked on November 5, 2015
  79. Spanish

    2.¿Quién le recomendó ese plato? (su tío) I have to answer this using the double object pronouns. these are the anwers I tried so far: Mi tío me lo recomendó. Su tío se lo recomendó. it is saying that the se lo recomendo is correct. I am missing

    asked on September 18, 2014
  80. Physics

    A child of mass 30 kg stands beside a circular platform of mass 95 kg and radius 2.4 m spinning at 2.3 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed? b) She then walks to the center and stay there. What

    asked on December 7, 2016
  81. us history

    what did john smith and Anne Hutchinson have in common? a) both were thought as trouble makers b) both were governors upon arrival in america. c) both were puritans who lived in the new England. ** d) both had agreements with the puritans. please help

    asked on October 30, 2015
  82. stats

    The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics were calculated. mean = 160 range = 60 mode = 165 variance = 324 median = 170 The coefficient of variation equals: a.0.1125% b.11.25% c.203.12% d.0.20312% Do I

    asked on September 15, 2016
  83. Physics

    A synchronous satellite, which always remains above the same point on a planet's equator, is put in orbit around Neptune so that scientists can study a surface feature. Neptune rotates once every 16.1 h. Use the data of Table 13.2 to find the altitude of

    asked on March 13, 2010
  84. Physics

    Total lung capacity of a typical adult is approximately 5.0L. Approximately 20% of the air is oxygen, as air is 20% oxygen. At sea level and at an average body temperature of 37 C, how many moles of oxygen do the lungs contain at the end of an inflation?

    asked on November 19, 2009
  85. geometry

    Equilateral triangle ABC and isosceles triangle DBC share side BC. If angle BDC= 34 and BD=BC, what is the measure of angle ABD? I don't know how to solve this questions, can someone guide me through?

    asked on November 26, 2014
  86. Science

    identify the bay, sound, or gulf that serves as base for a) the Sacramento and San Joaquin rivers b) the Alabama River system c) the Connecticut River system Thanks for your help!!!

    asked on February 9, 2009
  87. lenguage art

    howw would you define the speaker's love for annabel lee ?would you want to feel or be the object of such a love ? explain why or why not.

    asked on May 1, 2011
  88. math

    penny has 25 dimes. she likes to arrange them into three piles, putting an odd number of dimes into each pile. in how many ways could she do this?

    asked on February 14, 2011
  89. us history

    which answer best explains the contributions of women during the revolutionary war? a) women were in charge of the horses and artillery during the revolutionary war. b) women often poisoned British troops stationed in their towns during the revolutionary

    asked on October 31, 2015
  90. math

    A softball diamond is a square with sides of 60 feet long. How far is home plate to second base? Round to the nearest tenth if necessary. 60 Home plate, first base, and second base form a right-angled triangle, with home plate to second as the hypotenuse.

    asked on April 9, 2007
  91. Chemistry

    What is the name of the following compounds; Hg2(BrO2)2 Au(OCN)3 AuSCN Ni3(AsO4)2 Thank you

    asked on July 22, 2010
  92. Mathematicas

    To win $1 million, you must draw two cards whose sum is nine from a stack of cards numbered 1 through 10. After the first draw, you replace the card and shuffle the stack again for the second draw. What is the chance that your two cards will have a sum of

    asked on January 28, 2010
  93. Physics

    How many atoms of hydrogen are in 220g of hydrogen peroxide (H2O2)? the molecular weight of H2O2 = 2*1 +2*16 =34 therefore, there are 220/34 moles of the molecule = 6.47 moles, so there are 6.47xAvogadro's number of molecules there are 2 H atoms per

    asked on November 18, 2009
  94. language arts

    which sentence uses the future tense of the verb to go correctly? a) she has gone to Paris only once. b) she is going to Paris this season c) she will go to Paris next autumn. d) she´s been going to Paris for years. which of the following words or phrases

    asked on October 14, 2015
  95. chemistry

    Acetic acid (CH3CO2H) is a weak acid. As a result, a solution of sodium acetate (NaCH3CO2) will be _____.

    asked on January 6, 2014
  96. Algebra 2

    Can someone help me? I'm really confused. The loudness L of a sound in decibels is given by L= 10log(base10)R, where R is the sound's relative intensity. If the intensity of a certain sound is tripled, by how many decibels does the sound increase?

    asked on March 1, 2010
  97. History

    Which best describes the Assyrian Empires impact on the Mesopotamia region? The Assyrian were the last known hunter-gatherer group in Mesopotamia The Assyrians attacked and killed thousands of Muslims in Egypt, Iran, and Syria The Assyrians learned to make

    asked on February 18, 2019
  98. Math

    A total of 210 people attended the opening night of a school musical. Student tickets cost 3.00 each while general admission tickets cost 7.50 each. If total sales were $1296, how many general admission tickets were sold? Need help setting up the equations

    asked on April 9, 2018
  99. Physics

    If the gravitational force between the electron (9.11 ✕ 10-31 kg) and the proton (1.67 ✕ 10-27 kg) in a hydrogen atom is 1.06 ✕ 10-47 N, how far apart are the two particles?

    asked on February 9, 2018
  100. Chemistry

    Aluminum sulfate reacts with calcium hydroxide (from lime) to form aluminum hydroxide and calcium sulfate. Write the balanced formula unit equation for the reaction.

    asked on September 28, 2014


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