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A commercial cylinder contains 6.91 m3 of O2 at 15.18 MPa and 21oC. The critical constants for O2 are Tc = -118.4 oC and Pc = 50.1 atm. Determine the reduced temperature and pressure for O2 under t
If you used the 9000 kilojoules you expend in energy in one day to heat 51000 g of water at 16 degrees C, what would be the rise in temperature? What wouldbe the new temperature of the water?
A 1280 kg car pulls a 350 kg trailer. the car exerts a horizontal force of 3.6 x 103 N against the ground in order to accelerate. What force does the car exert on the trailer? Assume an effective f
What is the volume of distilled water that is needed to be added to 8g of sodium hydroxide to make it 0.4 mol dm-3 sodium hydroxide solution?
Find the normal force exerted by the floor on each hand and each foot, assuming that he holds this position.
A friend asks you how much pressure is in your car tires. You know that the tire manufacturer recommends 30 psi, but it's been a while since you've checked. You can't find a tire gauge in the car, b
How many moles of sodium benzoate must be added to 2.5 L of .15 M benzoic acid to form a buffer whose pH is 4.46? Assume the addition of sodium benzoate does not change the total volume of the solut
The separation distance between two 1.0 kg masses is change. How is the mutal gravitational force affected in each case (assume F1 is the original force and F2 is the force after modification.)
When an ionic compound such as sodium chloride (NaCl) is placed in water the component atoms of the NaCl crystal dissociate into individual sodium ions (Na+) and chloride ions (Cl-).
A 80 kg student traveling in a car with a constant velocity has a kinetic energy of 1.9 x 104 J. What is the speedometer reading of the car in km/h?
2Al(s)+3Cl2(g)>2AlCl3(s)You are given 30.0 g of aluminum and 35.0 g of chlorine gas.If you had excess chlorine, how many moles of of aluminum chloride could be produced from&n
Find the moment of inertia about its axis of rotation and the angular acceleration of the rotating system.
Gasoline flows into a storage container at the rate of 32.5gal/min. The storage container is 13.0 ft wide, 17.0 ft long and 7.00 ft deep. How many hours does it take to fill this container?
The temperature rose by .910K. In a separate experiment in the camecalorimeter, the combustion of .825g/mol of benzoic acid, for which the internal energy of the combustion is -3251kj/mol, gave atem
How much energy in J is dissipated as heat during a 2 minute time interval by a 1.5 Kilo Ohm resistor that has a constant 20 V potential difference across its leads?
In Joule's experiments, the slow lowering of a weight (through a pulley and cable arrangement) turned a stirrer in an insulated container of water. As a result of viscosity, the kinetic energy trans
A beam of white light makes an angle of incidence of 38° with a glass prism of index of refraction of 1.5 and refracting angle of 60°. Through what angle is the ray deviated by the prism? Do
How much heat is released as the temperature of 12.7 grams of copper tubing is decreased from 94.7°C to 43.2°C? The specific heat of copper is 0.385 J/g-°C.
A quantity is measured 100 times, and, after calculating the mean, the standard deviation, and the standard error on the mean, and assuming the errors on the individual measurements are all random,
A metal cube having a mass of 19.51 grams is dropped into a graduated cylinder containing 9.50 mL of water. This causes the water level to rise to 10.59 mL. What is the density of the cube in grams
Ignoring any change in the glass containing the mercury, what will be the height of the mercury column for the same one atmosphere of pressure when the temperature rises to 38.0 °C on a hot day?
When 0.270 g of the compound was dissolved in 50.0 g of camphor, the resulting solution had a freezing point of 177.9*C. (Pure camphor freezes at 179.8*C and has Kf = 37.7*C/m)
During the cycle, what are (a) the net energy entering the system (the gas) as heat and (b) the net work done by the gas? (c) What is the efficiency of the cycle?
Combustion of a sample of this mixture of ethanol and octane (in the presence of excess oxygen) produced 208.09 g of water and 439.34 g of carbon dioxide.
For calculating the mean and the standard deviation below, don't use the "mean" or "sigma" key on your calculator - show explicitly the sums you are doing. a) what is the mean value for your five me