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A baseball outfielder throws a 0.150 kg baseball at a speed of 35.0 m/s and an initial angle of 26.0°. What is the kinetic energy of the baseball at the highest point of its trajectory?
It dissolves via the reaction and the temperature of the solution increases to 28.0. Calculate the enthalpy change for this reaction per mole of X .
200 gmol of SO2 and 100 gmol O2 are fed to a reactor. Only 81 gmol of SO2 reacted according to 2SO2 + O2 → 2 SO3. Find the amount in mol fraction of SO2 that did not react?
The infamous chicken is dashing toward home plate with a speed of 5.7 m/s when he decides to hit the dirt. The chicken slides for 1.0 s, just reaching the plate as he stops (safe, of course). What
What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 10-13 J. mass of an alpha particle = 4.00150 amu;
A 0.302 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.177 kg puck moving initially along the x axis with a speed of 2.38 m/s. After the collision, the 0.177 kg p
If this process is run until 3940 g of iron has been produced, how many grams of carbon dioxide will be produced along with the iron?
The fahrenheit temperature is 98 on a hot summer day. What is the reading on the Kelvin scale?
155 grams unkown substance was heated from 25.0c to 40c absorbed 5696j of energy what is the heat of the substance ?
Consider the following reaction carried out in a 2.0 L pressure vessel at 500K. calculate the final x value using quadratic formula.
To explain why he seems to hang in the air, calculate the ratio of the time he is above ymax/2 moving up to the time it takes him to go from the floor to that height. You may ignore air resistance.
Two horizontal forces, 225 N and 165 N, are exerted on a canoe. If the these forces are applied in the same directions, find the net horizontal force on the canoe.
A hydrocarbon mixture consists of 60.0% by mass of C3H8 and 40% of CxHy. When 10.0 g of this mixture is burned, 29.0 g CO2 and 18.8 g H2O are the only products. What is the formula of the unknown hy
A space vehicle is traveling at 5200 km/h relative to the Earth when the exhausted rocket motor is disengaged and sent backward with a speed of 77 km/h relative to the command module. The mass of t
An electrolytic cell is set up with Cd(s) in Cd(NO3)2 (aq) and Zn(s) in Zn(NO3)2 (aq). Initially both electrodes weigh 5.00g. After running the cell for a time the electrode in the one half cell wei
Two forces, and , act at a point, as shown in the picture. has a magnitude of 9.00 and is directed at an angle of = 62.0 above the negative x axis in the second quadrant. has a magnitude of 6.40 and
Under these conditions, what would be the effect on the following atomic spectral lines (viz. number of lines and line positions).
A man pulls a 50 kg box at constant speed across the floor with a rope. He applies a 200N force at an angle of 30 degrees. Sum the forces in the x-direction. 1) what is the frictional force opposing
After falling from rest from a height of 28 m, a 0.46 kg ball rebounds upward, reaching a height of 18 m. If the contact between ball and ground lasted 1.7 ms, what average force was exerted on the
The volume of the gas is 201 mL measured at .989 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 23°C = 0.0277 atm.)
What is the acceleration of the cannonball just before it hits the balloon?
A horse canters away from its trainer in a straight line, moving 118 m away in 14.0 s. It then turns abruptly and gallops halfway back in 5.0 s. Find the average speed and velocity
Mom made the kids 2 L of Kool-Aid by mixing 5.0 g sugar (C12H22O11), 10.2 mg of Kool-Aid powder (a proprietary mixture of ingredients), and water. What is the concentration of sugar in the Kool-Aid
Calculate the pH of a solution made by adding 80. g of sodium acetate, NaCH3COO, to 39 g of acetic acid, CH3COOH, and dissolving in water to make 500. mL of solution.
A 87 arrow is fired from a bow whose string exerts an average force of 120N on the arrow over a distance of 78cm. What is the speed of the arrow as it leaves the bow?