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A vessel of volume 22.44 dm^3 contains 2.0 mol h2 and 1.0 mole of N2 at 273.15 K initially. All the H2 reacted with sufficient N2 to form NH3.
You have a baseball bat and a driver (golf club). Which one is the more efficient implement to strike the ball used in the sport? Explain your choice using the concepts of center of gravity, lever a
A river had a depth of 1 m, a width of 40m, and a flow of 20 m^3/sec. Assume that the wind speed at 10 m elevation is 4 m/sec. What is the overall mass-transfer coefficient for oxygen from the atmo
What refinements had to be made in Dalton's atomic theory to account for Gay-Lussac's results on the combining volume of gasses?
A golfer strikes a ball so that it flies a distance d away, landing a height h above its original elevation. The time of flight of the ball is T. a) Find the initial vertical component of the veloci
The first reaction in glycolysis is the phosphorylation of glucose:Pi+glucose gives glucose-6-phosphate.This is thermodynamically unfavourable process, with change of free energy=+1kj/mol.
If electricity costs $0.07/kWh, how much will it cost to raise the temperature of the water from 70 to 120 F?
One pound-mass of air is heated at constant pressure from 300°F to 1300°F. Calculate the required thermal energy input if:
What's the difference between physical/chemical change and physical/chemical property? How is energy involved in chemical and physical changes?
A 1500-kg automobile is pulled behind a tow truck. The power exerted by the tow truck on the car is a constant 50 kW. Determine the time required to accelerate the automobile from rest to a speed of
A closed system undergoes a cycle consisting of two processes. During the first process, 40 Btu of heat is transferred to the system while the system does 60 Btu of work. During the second process,
What is the terminal settling velocity for a particle with a diameter of 1 mm and a density of 2.5 g/cm^3 suspended in water at 20 degrees C?
Assuming that temperature remains constant and that the air behaves as an ideal gas, what is the final volume? What is the work done by the air on the piston?
The flow of Florida Current through the straights between Key West and Cub is 150 x 10^6m^3/sec. The mass concentration of salt in seawater is about 35 ppt (o/oo). What is the flux of salt in the F
A gaseous mixture consists of 80.0 mole percent N2 and 20.0 mole percent 02. Suppose water is saturated with the gas mixture at 25 c and 1 atm total pressure, and then the gas is expelled from the w
Find an expression for the oscillation frequency of an electric dipole of dipole moment P and rotational inertia I for small amplitudes of oscillation about its equilibrium position in a uniform ele
A 5.5cm -thick layer of oil (n=1.46) is sandwiched between a 1.1cm -thick sheet of glass and a 2.3 cm-thick sheet of polystyrene plastic (n=1.59). How long (in ns) does it take light incident perpen
A skier is gliding along at 4.0 m/s on horizontal, frictionless snow. He suddenly starts down a 14° incline. His speed at the bottom is 15 m/s. (a) What is the length of the incline?
A sample of a gas occupies 1.40 x 103 mL at 25oC and 760 mmHg. What volume will it occupy at the same temperature and 380 mmHg?
If a photon moves from n=4 to n=1, what is the energy production? is it gained or lost? what is the wavelength that goes with this energy?
A ball thrown horizontally at 29 m/s travels a horizontal distance of 54 m before hitting the ground. From what height was the ball thrown?
If = 533 , what is the minimum diameter of the circular opening from which the laser beam emerges? The earth-moon distance is 3.84×105.
Estimate the mass of the Martian atmosphere given the following information: the mean radius of Mars is R = 3386 km, the acceleration of gravity is g = 3.71 m/s2, and the atmospheric pressure at th
Explain how this photochemical isomerization allows the production of the thermodynamically less stable cis isomer. in other words, why is the trans isomer exclusivley converted to the cis isomer du
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 92 m above the glacier at a speed of 165 m/s. How far short of the target should it dr