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oxygen molecules absorb uv radiation of wavelength less than and equal to 242 nm calculate the frequency and energy of the least energitic of these photons.
What mass of calcium can be produced by this process if a current of 7300A is applied for 46h ? Assume that the electrolytic cell is 75% efficient.
Calculate the molarity and mole fraction of acetone in a 1.82 molality solution of acetone in ethanol. Density of acetone is .788 g/cm^3. Density of ethanol is .789 g/cm^3. Assume that the volume of acetone and ethanol add.
derivatives of butanoic acid, Indicate how a butanoic acid can be converted to an a) acid chloride; b) acid anhydride; c) an ethyl ester, and d) an N-methyl amide
react with an excess of H3PO4, how many grams of water and how many grams of Ca3(PO4)2 will have on the products side? Also, what type of reaction is it?
the rate of bimolecular reaction is affected by concentrations of reactants presence of a catalyst and temperature, Concentration of a pure solid and a liquid can be ommitted from the equilibrium equation as the concentration ratio of these equal to..
Ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. From 164.5°C to 179.0°C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction?
At a distance of 41 ft an ionizing radiation source delivers 4.5 rem of radiation. How close could you get to the source and still have no biological effects?
When a metal was exposed to light at a frequency of 4.54× 10^15 s-1, electrons were emitted with a kinetic energy of 3.10 × 10^-19 J.
neon has a volume of 445 mL when it is at a pressure of 719 mmHg. What will be the volume when the pressure is increased to 1122 mmHg
the decomposition of N2O5 in carbon tetrachloride proceeds as follows: 2 N2O5 -> 4 NO2 + O2. The rate law is first order in N2O5. At 64 degree celcius the rate constant is 4.82 x 10^ 3 s ^ -1.
the fraction of the initial mass of gas remaining in the tank if carbon dioxide obeys the ideal gas and PR equations of state
The addition of a crystal of sodium chlorate to a sodium chlorate solution causes additional crystals of sodium chlorate to precipitate. Will the solution be saturated, unsaturated, or supersaturated?
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