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Dinitrogen pentoxide decomposes in chloroform as a solvent to yield nitrogen dioxide and oxygen gas. The decomposition is first order with a rate constant of 1.0 x 10-5 s-1 at 45 degrees Celsius.
A liter of a solution saturate at 25 degree c with calcium oxalate, CaC2O4 is evaporated to dryness giving a .0061 gm residue of cac2o4. Calculate the concentration of the ions and the molar solubil
What is the net force of a 4.0 N force and an 9.0 N force acting on an object for each of the following conditions? (a) The forces act in opposite directions.
A 25 g piece of aluminum at 85C is dropped in 1.0 L of water at 10C which is in an insulated beaker. Assuming that there is negligible heat loss to the surroundings, determine the equilibrium temper
The Kp value was calculated as 8.491 g. What does the Kp value tell you about the solubility of benzoic in the two solvents dichloromethane and water?
One of the twelve charges, which happens to be on the positive x axis, is now moved to the center of the circle. Find the magnitude of the net electric force exerted on this charge.
Any point between the energy of the reactants and the point of highest potential energy in the course of the reaction
A liter of air, initially at room temperature and atmospheric pressure is heated at constant pressure until it doubles in volume. Calculate the increase in its entropy during this process.
The structure of the compound K2O is best described as a cubic closest packed array of oxide ions with the potassium ions in tetrahedral holes. What percent of the tetrahedral holes are occupied in
The flight time is determined by the initial vertical component of the velocity and by the acceleration. The flight time does not depend on whether the object is moving horizontally while it is in t
Potassium chromate (K2CrO4) is manufactured in a process in which 1.25 kg/s of a solution that is 33.3wt% K2CrO4 in the fresh feed stream is mixed with a recycle stream containing 36.36% K2CrO4, and
Two 2.20 cm x 2.20 cm plates that form a parallel-plate capacitor are charged to +/-0.708 nC . What is the electric field strength inside the capacitor if the spacing between the plates is 1.50 mm ?
A 100.0 m long rod with a diameter of 3.0 mm has a charge of 1028 C. What is the approximate electric field 4 mm from the surface of the rod, not near either end? (The constant e0 is 8.85 × 10
90% of the methane stream fed to the reactor is consumed and 85.5% of the methane fed to the reactor is converted to the desired formaldehyde product. Calculate the molar composition of the reactor
As part of the process of producing sugar crystals from sugar cane, raw sugar cane juice is sent to a series of evaporators to remove water. The sugar cane juice, which is 85wt% water, is fed to the
Consider a 1 liter rigid vessel that is initially half full of water and half full of air at room temperature and 5 atmospheres of pressure.
A small particle with a mass of 2 kg carrying a charge of 1 nC is at the surface of a charged spherical conductor of radius 3 mm. If the surface charge density is 1 C/m^2, find the acceleration of t
At a 62% heating efficiency, determine the quantity of natural gas, in g, required to melt 25g of solid gold, initial temperature is 20 degrees celsius, to produce molten goldat 1850 degrees celsius
Explain why most multicellular organisms use an iron-containing protein for oxygen binding rather than free iron. Your answer should include an explanation of (a) the role of heme and (b) the role
An airport has runways only 161 m long. A small plane must reach a ground speed of 40 m/s before it can become airborne. What average acceleration must the plane's engines provide if it is to take o
What are amino-acid tRNA synthetase enzymes and why are they important in the biology of cells? How many different ones do you know exist in any given cell type?
When a 0.6333-g sample of a compound of carbon, hydrogen and sulfur was burned in excess oxygen, 0.9272 g CO2, 0.3795 g H2O and 0.6749 g SO2 were obtained.
A ship, carrying freshwater to a desert island in the Caribbean, has a horizontal cross-sectional area of 2850 m2 at the waterline. When unloaded, the ship rises 9.00 m higher in the sea. How much wat
The pilot of an airplane traveling 170 {km/h} wants to drop supplies to flood victims isolated on a patch of land 140 {m} below. The supplies should be dropped how many seconds before the plane is d
The specific heat capacity of silver is 0.235 J/g K. Its melting point is 962 C and its enthalpy of fusion is 11.3 kJ/mol. What quantity of heat in joules is required to change 5.00 g of silver fro