1. chemistry

    titration of 50ml of 0.25ammonia with 0.5M HCL . a) find the initial PH value b) volume of HCL is required to reach the equivalent poinnt c)the ph at the equivalence point
  2. Physics

    The acceleration due to gravity on the Moon is 1/6 of that of the Earth. Given the same initial velocity: How much higher will an object displace on the Moon? How much more time will it spend in the air?
  3. chemistry

    Determine the final pressure of a gas that has an initial pressure of 1.00 atm and is heated from 20 °C to 30 °C. Round to the nearest hundredth. Don't forget the units.
  4. physics

    A cannon shell is fired up in the air at an initial speed of 225m/s. After how much timeis the shell at a height of 6.20 X 102 and heading down. What equation would be used to solve this?
  5. PHYSIC

    A BODY MOVING WITH A UNIFORM ACCELERATION. IT TRAVELS 84M IN FIRST 6 SEC AND TRAVEL 180M IN 5 SEC FIND ITS INITIAL VELOCITY AND ACCELERETION
  6. Physics

    An arrow is fired vertically upwards by a bow and reaches an altitude of 134 m. Find the initial speed of the arrow on the ground level.
  7. Physics

    A stone is thrown at an angle of 30 degrees above the horizontal from the top of a cliff with an initial speed of 12 m/s. If it hits the ground 4.6 seconds later, what is the height of the cliff?
  8. chemistry

    A sample of nitrogen gas has the temperature drop from 250°C to 150°C at constant pressure. What is the final volume if the initial volume is 310 mL?
  9. physics

    An automobile travelling with an initial velocity of 25m/s is accelerated to 35m/s in 6 second. The wheel of automobile is 80cm in diameter. Find the angular acceleration
  10. Physics

    A ball is thrown upward from the ground with an initial speed of 23.2 m/s; at the same instant, another ball is dropped from a building 20 m high. After how long will the balls be at the same height?
  11. Physics

    A point mass m = 115 g hangs from a string of length l = 1.07 m. Calculate the value of v, the initial speed m should be given at the bottom, so that the string reaches a maximum angle of = 31.4°?
  12. Physics

    A ball traveling with an initial momentum of 2.5 kg*m/s bounces off a wall and comes back in the opposite direction with a momentum of -2.5 kg*m/s. What impulse would be required to produce this change?
  13. Physics

    A ball is thrown upward from the ground with an initial speed of 23.2 m/s; at the same instant, another ball is dropped from a building 20 m high. After how long will the balls be at the same height?
  14. Physics

    A baggage handler throws a 16.0 kg suitcase horizontally along the floor of an airplane luggage compartment with an initial speed of 1.10 m/s . The suitcase slides 2.10 m before stopping.
  15. PHYSICS

    Consider a spring and block system k= 18 N/m x initial = o m x final = 0.08m Useing Hooke's law to calculate the force needed to stretch this spring 8 cm.
  16. Chem10

    The decomposition of XY is second-order in XY and has a rate constant of 0.00599 M-1s-1 at a certain temperature. If the initial concentration of XY is 0.174 M, how long (in seconds) will it take for the concentration to decrease to 0.054 M?
  17. Chem8

    The decomposition of XY is second-order in XY and has a rate constant of 0.00895 M-1s-1 at a certain temperature. If the initial concentration of XY is 0.194 M, how long (in seconds) will it take for the concentration to decrease to 0.047 M?
  18. physics

    A 7.5 kg object moving at 7.3 m/s collides inelastically with a 4.0 kg object which is initially at rest. What percentage of the initial kinetic energy of the system is lost during the collision?
  19. precalculus

    After 3 hours the number of bacteria in a culture is observed to have doubled. Find the time that it takes the culture to grow to 30 times its initial size.
  20. physics

    `A golfer strikes the ball as shown. Letting, α = 23 °, β = 41°, and the initial speed v0 = 6 m/s, determine the x and y coordinates of the place where the ball will land
  21. Physics

    Stephanie serves a volleyball from a height of 0.85 m and gives it an initial velocity of +6.6 m/s straight up. How high will the volleyball go? The accel- eration of gravity is 9.81 m/s2. Answer in units of m
  22. Business Calculus

    The indefinite integral, or which call the "antiderivative", of f'(x)=6x-8x^3 is f(x) = 3x^2 - 2x^4 + C where C is any constant. Plug in x = 2 to that to see what C is. 3 = 3*4 - 2*16 + C Determine the antiderivative of the following function given the
  23. PHYSICS!!!!!

    An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 19.0 m if her initial speed is 3.80 m/s. What is the free-fall acceleration on the planet?
  24. PHYSICS

    Terry hit his 26 g golf ball so that it has an initial velocity of 33 m s-1 travelling at an angle of 26 to the horizon. If the ball lands at the same height it was struck, how far will it travel? Use g = 9.8 m s-2.
  25. physics

    A boy throws a stone straight upward with an initial speed of 12.0 Part A What maximum height will the stone reach before falling back down?
  26. Science

    What two angles of elevation will enable a projectile to reach a target 16 km downrange on the same level as the gun if the projectile's initial speed is 400m/sec ?
  27. physic

    1) A 2 . 3 kg object moving at 7.3 m/s collides inelastically with a 4.0 kg object which is initially at rest. What percentage of the initial kinetic energy of the system is lost during the collision?
  28. Transistion to College Math

    A rifle bullet is fired vertically with initial speed 490 m/s. how long does it take the bullet to reach its greatest height?
  29. Physics

    If someone could point me in the right direction-please!!! A car with an initial speed of 4.30m/s accerlerates uniformly at the rate of 3.00 m/s ^2. Find final speed after 5.00s. Thanks for any help you can provide.
  30. Physics

    A ball is thrown upward from the ground with an initial speed of 23.1 m/s; at the same instant, a ball is dropped from a building 15.0 m high. After how long will the balls be at the same height?
  31. Physics

    A batted baseball leaves the bat at an angle of 30 degrees above the horizontal and is caught by an out fielder 400ft from the plate. (a) what was the initial velocity of the ball? (b) How high did it rise? (c) How long was it in the air
  32. Physics

    A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?
  33. Physics

    For the remaining parts of this question use the following settings in "Uniform circular motion" mode. The initial angular velocity is 4.1 rad/s and the radius is 4.1 cm. (c) What is the speed of the object at a time t = 3.0 s after the simulation is
  34. personal developmetn 20 Chapter 1

    This stage reflects initial work experience that may have started only as a job but that offers experiences for growth so that it becomes a part of the self-concept. A. Establishment B. maintanence C. Expolration D. Disengagement
  35. Physics

    A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?
  36. Physics

    A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?
  37. physics

    A stone is thrown with an initial speed of 15 m/s at an angle of 37 above the horizontal from the top of a 35 m building. If g = 9.8 m/s2 and air resistance is negligible, then what is the magnitude of the vertical velocity component of the rock as it hits
  38. 7th Grade Math

    Find the total amount of money that Jeff will have in his savings account after 3 months if his initial deposit was $945 with a 4.5% interest rate. I have no idea what the answer is. Please explain.
  39. math

    A figure skater pushes off from rest and glides along a circular path, the radius of which is 3 times her height. What must be her minimum initial velocity in order to come full circle without having to push off a second time?
  40. science

    A diesel engine's piston compress 16cm3rd of fuel air mixture into 1cm3 The pressure changes from a atmosphere to 48 atmospheres if the initial temp. of the gas was 305k What was the final temerature
  41. physics

    A figure skater pushes off from rest and glides along a circular path, the radius of which is 3 times her height. What must be her minimum initial velocity in order to come full circle without having to push off a second time?
  42. Physics 1

    A golf ball is struck with a five iron on level ground. It lands 92.0m away 4.20s later. What was (a) the direction and (b) the magnitude of the initial velocity? I have no idea how to go about using the information given to find the first part (A). Even
  43. physical science

    A tennis ball is thrown vertically upward wih an initial velocity of 8.0m/s. A) What will its speed be wheen it returns to its tarting point? B) How long will it take for it to reach its starting poing?
  44. chemistry

    Anthroquinone (C14H8O2), an important intermediate in the dye industry, is produced from the reaction of benzene with phthalic anhydride (C8H4O3), followed by dehydration with sulfuric acid. The overall reaction is... C8H4O3 + C6H6 --> C14H8O2 + H20 b)
  45. algebra 2

    So the dead line for my class is coming up. And I really need help for these questions! 2. Elaine shoots an arrow upward at a speed of 32 feet per second from a bridge that is 28 feet high. The height of the arrow is given by the function h(t) = -16t2+32t
  46. Linear Programming Homework Problem

    formulate this Lp model . write in standard form An investment firm hired you to manage one of their new mutual funds. The fund invests in two main companies/stocks, Pittsburg Steel (X1) and IMB(X2). Pittsburg Steel is currently trading at $40.00 per share
  47. Physics

    Physics Homework _____________________________________________________________ 1.) A particle at t 1 = -2.0 s is at x 1 = 3.4 cm and at t 2 = 4.5 s is at x2 = 8.5 cm. What is its average velocity? Can you calculate its average speed from this data?
  48. phy

    A blue ball is thrown upward with an initial speed of 20.6 m/s, from a height of 0.8 meters above the ground. 2.5 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.2 m/s from a height of 23.7 meters above the
  49. Chemistry

    PCl5 --> PCl3 + Cl2 (Kp = 630 at 546 K) A system is prepared by placing equimolar amounts of the three gases shown in the equation above in a suitable rigid container held at constant volume. Equilibrium is established at 546 K. (A) When equilibrium is
  50. Physics

    Interactive LearningWare 22.2 at wiley/college/cutnell reviews the fundamental approach in problems such as this. A constant magnetic field passes through a single rectangular loop whose dimensions are 0.35 m 0.55 m. The magnetic field has a magnitude of
  51. Physics

    1An object is thrown upward at an initial velocity and caught at the same level as it was thrown. What should the maximum height be if the hang time is 6.4? (please report numerical value to 2 decimal places- unit will not be necessary to report) 2An
  52. Chemistry s103 Q5

    struggling to get this to come out right: Compound 1 CH2=CH-CH-OH | CH3 + Compound 2 O || CH3-CH-CH2-C | OH | | ? (i) identify any functional groups in compounds 1 & 2 by circling them and naming them clearly. (ii) complete the equation for reaction 1 by
  53. managerial economics

    Suppose the inverse market demand equation is P = 80 ¡V 4(QA+QB), where QA is the output of firm A and QB is the output of firm B, and both firms have a constant marginal constant of $4. Firm B is the Stackelberg leader in this market. (a)State the
  54. chemistry

    Can someone help me finish this equation, please? We're adding Magnesium to Copper sulfate and getting Copper. This is what I have as of now: CuSO4+Mg===>Cu I'm guessing it is a single replacement, so should I add MgSO4 to the right? But then my lab
  55. Calculus

    Use Newton's method with the specified initial approximation x1 to find x3, the third approximation to the root of the given equation. (Round your answer to four decimal places.) 1/3x^3 + 1/2x^2 + 8 = 0, x1 = −3 I got -3.4808, but it's wrong. Help?
  56. phyics

    Find the horizontal range of a baseball that leaves the bat at an angle of 63 degrees, with the horizontal with an initial velocity of 160 km/hr. discard air resistance
  57. physics

    While on the moon, the apollo astronauts enjoyed the effects on gravity so much smaller then that ont he earth. If neil armstrong jumped up on the moon with the initial speed
  58. physics

    a pelican flying a horizontal path drops a fish from a height of 5.0m. the fish travels 8.1m horizontaly before it hits the water below. what was the pelicans initial speed?
  59. Physics

    On piercing a distance of 15cm in a wooden block a bullet losses of its initial velocity before coming to rest the further distance travelled by it is Ans:5cm
  60. Physics

    A skateboarder with an initial speed of 3.1-m/s, rolls virtually friction free down a straight incline of length 18-m in 3.2-s. At what angle (in degrees) is the incline oriented above the horizontal?
  61. physics

    Suppose the ball is kicked horizontally with an initial speed of 9.37m/s. If the ball travels a horizontal distance of distnace 85 meters, how tall is the mountain?
  62. Physics

    An object is thrown upwards at an initial speed of 19.6 m/s from a height of 65m. Determine how long will take for the object to reach the ground (time of flight). what formula should i use?
  63. Physics

    A gunman shoots from a riffle in a horizontal direction without correcting for gravity. How much below the intended target, at a horizontal distance, will the bullet strike if its initial speed is Vo??
  64. Physics

    A gunman shoots from a riffle in a horizontal direction without correcting for gravity. How much below the intended target, at a horizontal distance, will the bullet strike if its initial speed is Vo??
  65. Physics

    A rocket leaves the launch pad heading straight up with a constant acceleration of 60 m/s^2 \. its initial stage booster runs out in 25 seconds. How high is the rocket?
  66. Physics

    A stone is thrown vertically upward at an initial speed of 10m/s. Find the total time of the flight and the maximum height reached by the stone.
  67. physics

    A Bulldog is already moving when we first see it. It waddles -57 meters reaching a final velocity of -28 m/s after accelerating at -4 m/s2. WHAT WAS THE DOG'S INITIAL VELOCITY? Every time I try to use v^2= V0+2a(delta x) I end up getting a very big value.
  68. Physics

    A 0.45-kg soccer ball is kicked at an angle θ above the ground with initial speed vi. Determine the height of the ball as a function of the horizontal distance d it travels down the field.
  69. physics

    A stone is thrown from ground level at 70m/s. Its speed when it reaches its highest point is 48 m/s. Find the angle, above the horizontal, of the stone’s initial velocity.
  70. Physics

    A car drove a total 5km. Accelerated 10seconds then had a constant velocity. Entire trip was 45 seconds. Was was the initial acceleration and final velocity?
  71. physics

    An astronaut wearing a 20-kg spacesuit jumps on the moon with an initial velocity of 16 m/s. On the moon, the acceleration due to gravity is 1.62 m/s squared. What is the maximum height he reaches?
  72. physics

    An astronaut wearing a 20-kg spacesuit jumps on the moon with an initial velocity of 16 m/s. On the moon, the acceleration due to gravity is 1.62 m/s squared. What is the maximum height he reaches?
  73. physics

    A skateboarder, with an initial speed of 3.2 m/s , rolls virtually friction free down a straight incline of length 16 m in 3.3 s. At what angle θ is the incline oriented above the horizontal?
  74. physics

    A startled armadill leaps upward rising .536 m in the first .197 s. What is its initial speed as it leaves the ground? What is its speed at the height f .536m? How much higher does it go?
  75. Physics

    Two particles each have a mass of 5.5 10-3 kg. One has a charge of +4.8 10-6 C, and the other has a charge of -4.8 10-6 C. They are initially held at rest at a distance of 0.88 m apart. Both are then released and accelerate toward each other. How fast is
  76. math

    You invest money that pays 6.3% interest/year compounded quarterly. How long should you invest if want to double initial investment? I tried A=P(1+r/n)^nt, but it didn't work, using A=2P. the principle is not given. Please help
  77. Physics

    Two particles each have a mass of 5.5 10-3 kg. One has a charge of +4.8 10-6 C, and the other has a charge of -4.8 10-6 C. They are initially held at rest at a distance of 0.88 m apart. Both are then released and accelerate toward each other. How fast is
  78. physics

    A flare is fired at an angle of 35 degrees to hit the ground at an initial speed of 250 m/s. How long dies it take for the flare to reach its maximum altitude?
  79. Physics

    4. A 500-g block is shot up a surface 25° inclined with the horizontal with an initial speed of 200cm/s. How far up the incline will it go if the coefficient of friction between it and the incline is 0.150? Thank youuuu!
  80. Physics

    A motorcycle with an initial velocity of 7.99x10^0 m/s accelerates for a total of 3.3x10^0 seconds at a rate of 1.51x10^0 m/s2. What is it's velocity, to two significant figures? can anyone show the calculations for this
  81. Physics

    A ball is thrown upward from the ground with an initial speed of 25 m/s; at the same instant, a ball is dropped from rest from a building 15 m high. After how long will the balls be at the same height?
  82. Physics

    A rocket of mass 50 kg is launched vertically. Its fuel is being burnt at a rate of 2 kg s-1 and its exhaust gas is being forced out with a speed of 1000 m s-1. What is the initial acceleration of the rocket?
  83. physics

    A cannonball is fired horizontally from a 240 {m}-high cliff toward a vertical building 720 {m} away with an initial velocity of 120 {m/s}. When the ball will hit the building? in a. 7.00 {s} b. 6.00 {s} c. less than 6.00 {s} d. more than 7.00 {s}
  84. Physics

    A golf ball having an initial speed of 50m/s with an angle of 30 degree what is time of flight and range and velocity it which it hits the ground at the end of flight
  85. Physics

    A car drove a total 5km. Accelerated 10seconds then had a constant velocity. Entire trip was 45 seconds. Was was the initial acceleration and final velocity?
  86. physics

    A projectile is shot at a 37 degree angle from the edge of a cliff h = 305 m above ground level with an initial speed of v0 = 125 m/s how much time will it take to hit the ground
  87. Chemistry

    2KClO3 ----> 2KCl + 3O2 Calculate the number of grams of KClO3 decomposed given an initial sample mass of 2.16g and a residue mass of 1.71g?
  88. Physis

    An arrow is horizontally projected from the top of a tower with an initial velocity of 15m/s.if it reaches the ground 7seconds later,calculate the height of the tower (let g=10m/s0).
  89. Aberdeen

    A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with a constant upward acceleration of 2.50 m/s2 until its engines stop at an altitude of 120 m.
  90. Physics

    A sample of a monatomic ideal gas is originally at 20 °C. Calculate its final temperature of the gas if the pressure is doubled and volume is reduced to one-fourth its initial value.
  91. Physics

    Two particles each have a mass of 5.5 10-3 kg. One has a charge of +4.8 10-6 C, and the other has a charge of -4.8 10-6 C. They are initially held at rest at a distance of 0.88 m apart. Both are then released and accelerate toward each other. How fast is
  92. Physics

    3813.75 Joules of work is being done on a 150 lb object while it is moved 75 ft across a horizontal plane, what is the final velocity if the coefficient of kinetic friction is 0.25 and the initial velocity is 1 ft / s?
  93. Physics

    A figure skater glides along the ice at 2.2 m/s , she then accelerates at 1.3 m/s^2 for 3.0 seconds. At the end of that time she is moving at 6.1 m/s. What would be the angle between the acceleration vector and the initial velocity vector? .. please help
  94. physics

    3813.75 Joules of work is being done on a 150 lb object while it is moved 75 ft across a horizontal plane, what is the final velocity if the coefficient of kinetic friction is 0.25 and the initial velocity is 1 ft / s?
  95. Chemistry

    What was the initial temperature of a sample pf silver that released 1207 joules when 150.0 grams of this metal were transferred to a cooler temperature of 60 degress Celsius?
  96. physics

    A ball is thrown upward from the ground with an initial speed of 26.2 m/s; at the same instant a ball is dropped from rest from a building 14 m high. After how long will the balls be at the same height?
  97. Chemistry

    A student mixes two water solutions with an initial temperature of 25 degrees C to form a final substance with a mass of 65 grams at 30 degrees C. What is the heat change in kJ?
  98. Algebra

    An initial investment of $480 is invested for 4 years in an account that earns 16% interest, compounded quarterly. What is the amount of money in the account at the end of the period?
  99. Physics

    A sample of a monatomic ideal gas is originally at 20 °C. Calculate its final temperature of the gas if the pressure is doubled and volume is reduced to one-fourth its initial value.
  100. Physics

    Two particles each have a mass of 5.5 10-3 kg. One has a charge of +4.8 10-6 C, and the other has a charge of -4.8 10-6 C. They are initially held at rest at a distance of 0.88 m apart. Both are then released and accelerate toward each other. How fast is