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At high temperatures phosgene (COCl2) decomposes to give carbon monoxide CO and Cl2. In a typical experiment, 0.631 g of COCl2 is injected into a flask of volume 472 cc.
The rotor of an electric motor has rotational inertia Im = 5.12 x 10-3 kg·m2 about its central axis.Calculate the number of revolutions of the rotor required to turn the probe through 31
Ethylene is supplied by a 60.9-L gas cylinder initially at 2200.0 psig and 25.0°C. Once leaving the cylinder, a regulator reduces the pressure to 15.0 psig, and a valve allows 1.000 mL/s of ethy
A spring stretches 0.150 when a 0.300 kg mass is hung from it. The spring is then stretched horizontally 0.100m from its equlibirum point and released. determine maximum acceleration of mass
You have a box of volume 1.00 liter into which you inject 2.65 g of NH3 at 600 K. What will be the final concentrations of NH3, N2, and H2 after equilibrium is established
A 0.75?F capacitor is charged to 90V . It is then connected in series with a 35? resistor and a 150? resistor, How much energy is dissipated by the 35? resistor
At high temperatures phosgene (COCl2) decomposes to give carbon monoxide CO and Cl2. In a typical experiment, 0.631 g of COCl2 is injected into a flask of volume 472 cc. When equilibrium is establis
A ray of light is incident on the surface of a block of clear ice at an angle of 33.0° with the normal. Find the angle between the reflected and refracted light
what mass of Mg is formed from molten MgCl2 if a current of 1.8 amps is passed through the sample for 16.7 hours
Some vitamins are water soluble and some vitamins are fat soluble. Identify whether vitamin C and vitamin E are water soluble of fat soluble.
A laser beam is incident at an angle of 30.8° to the vertical onto a solution of corn syrup in water. If the beam is refracted to 19.18° to the vertical, what is the index of refraction of the
What is the approximate mass percent of cholesterol in a blood sample having a cholesterol level of 176? Why can you not give a more precise answer
When filling a cuvette with distilled water and measuring it with a spectrofluorometer, upon excitation at 350nm, a band around 397nm appears. This is either a fluorescence band or a Raman band. Sug
A 500 mg tablet of antacid (all 500mg is calcium carbonate) is put into 250 ml of 0.12M hydrochloric acid. What volume of gas is produced at STP and how many moles of excess H3O+ are left over
If the propane and air streams enter the chamber at 25.0°C and 1.20 atm (absolute), and the products leave the chamber at 290.0°C and 2.90 atm (absolute), what is the volumetric flow rate of
A standard 100 W (120 V) lightbulb contains a 9.90cm -long tungsten filament. The high-temperature resistivity of tungsten, What is the diameter of the filament
Calculate the wavelength of light in vacuum that has a frequency of 5.4 1016 Hz. What is its wavelength in benzene
What is the energy in joules of an x-ray photon with wavelength 1.95 10-9 m, Convert the energy to electron volts
A lens of focal length 15.0 cm is used to create an image of the Full Moon. What is diameter of the image? The Moon's radius and average distance from Earth are 1.74× 106m and 3.85× 108
The image of an object through a diverging lens is 5.00 cm in front of the lens. If the magnification is 0.250,determine object distance and and focal length
A stunt driver wants to make his car jump over eight cars parked side by side below a horizontal ramp, what is the new minimum speed
What is the enthalpy of this reaction. Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
A 24.7cm diameter coil consists of 45 turns of circular copper wire 1.0mm in diameter. A uniform magnetic field, Determine the rate at which thermal energy is produced
Volume of NaOH dispensed (mL) A) 2 ml B) 2.25 ml C)2.25 ml. Moles of NaOH dispensed. Molar concentration of the acid (moles/L)
A square loop 15.0cm on a side has a resistance of 8.05? . It is initially in a 0.395T magnetic field, Calculate the electric energy dissipated in this process