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A certain wavelength is 1100 nm. What is the energy for a mol of photons (J/mol) with this wavelength
A light bulb has a tungsten filament. When the bulb is just turned on and its temperature is 20? C, the current in the bulb is 0.86 A. What is then the temperature of the filament
A sledge loaded with bricks has a total mass of 17.4 kg and is pulled at constant speed by a rope inclined at 20.4° above the horizontal. How much work is done by the rope on the sledge
A 1.585 L container of F2 at 750.0 mm Hg was connected to another evacuated container which had a volume of 1.988 L and separated by a valve. What was the final pressure in atmospheres if the valve
a +2.0-uC charge is initially 0.20 m from a fixed -5.0-uC charge and is then moved to a position .50m from a the fixed charge. how much work is required to move the charge
A person sees a ship on the horizon. Due to the curvature of earth, how far is the ship from the lighthouse - estimate how high above sea level you are and find how far the ship is from you.
What is the maximum instantaneous power dissipated by a 1.0 hp pump connected to a 240-Vrms ac power source
What is the molar ratio of initiator (2-methylpropionitrile) MW: 164.21 to sulfuryl chloride MW: 134.97 in the procedure? Why is so little initiator needed relative to the amount of chlorinating age
An extension cord made of two wires of diameter 0.129cm (no. 16 copper wire), How much power is dissipated in the cord
Assume that the relative yield of the products in your experiment will be proportional only to the numbers of hydrogens that give each product when substituted for by chlorine.
A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, What is the magnitude of the force of the car on the truck
Give a set of four quantum numbers that correspond to an electron in the highest occupied atomic orbital of Indium.
A container encloses 4.0 mol of an ideal gas that has molar mass M1 and 1.5 mol of a second ideal gas that has molar mass M2 = 3M1
A very light rigid rod with a length of 0.692 m extends straight out from one end of a meter stick. Determine the period of oscillation of the system
Calculate the arithmeticmean of the monthly HPRs for IBM and calculate the geometric mean of the monthly HPRs for IBM.
Two canal workers pull a barge along the narrow waterway at a constant speed. One worker pulls with a force of 105 N at an angle of 28 degrees with respect to the forward motion of the barge, What i
Draw the structure resulting from a reaction of osmium tetroxide (OsO4) and hydrogen peroxide (H2O2) with the following alkene.
If a mixture of heptane (bp = 98C) and octane (bp=126C) is places in a gas chromatography machine, at what temperature should the oven be set
What is the molar ratio of initiator to sulfuryl chloride in the procedure? Why is so little initiator needed relative to the amount of chlorinating agent used
In a particular Millikan oil-drop apparatus, the plates are 2.25 apart. The oil used has a density of 0.845 , how many excess electrons did it contain
One cubic meter of water flowing over Niagara Falls in New York drops 83.7 meters. how much heat energy would the water have
If you place an electric charge in an electric field it will feel a force due to the electric field, Describe the direction of the force
The rate constant of a first-order reaction 7.60 *10^-4 s^-1 at 350 degree celcius. If the activation energy is 134 KJ/mol, what is the temperature at which its rate constant is 9.70 *10^-4 s^-1
A small sphere with a mass of 1.0 g is suspended at the end of an insulating string of length 50 cm within a uniform horizontal electric eld of 12,000 N/C. What is the value of the charge on the sm
A freezer has a coefficient of performance of 2.40. The freezer is to convert 1.98kg of water at 26.0 oC to 1.98kg of ice at -5.00 oC in 1 hour. How much electrical energy is consumed by the freezer