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A tube containing hydrogen gas is attached to a device that supplies energy to the atoms. Some of the atoms have electrons that have gained enough energy to move to the 5th energy level.
What is the energy of the hydrogen electron when it is in the 5th energy level?
Calculate the pH of a buffer solution made by mixing 44 ml of a 0.10 M ammonia solution with 58 ml of a 0.10 M ammonium nitrate solution. Give the pH to two decimal places.
How much heat (in kJ ) is required to warm 13.0 of ice, initially at -13.0, to steam at 114.0? The heat capacity of ice is 2.09 and that of steam is 2.01
If the enthalpy of combustion of the compound is -2978.0 kJ/mol and the temperature of the calorimeter rises from 25.44 C to 27.7 C, how many moles of the compound were oxidized?
A solution made by adding 105g of NaCl to 1 kg of water freezes at 20 degrees F (-6.7 degrees Celsius). Calculate the mass of CaCl2 that would lead to the same freezing point depression
Calculate the distances NH3 gas and HCL gas would travel in this experiment if a 100.00-cm tube were used, based on the accepted molar masses of the two gases.
Write the equations that represent the first and second ionization steps for selenic acid (H2SEO4) in water.
The background section describes why you want the bleach to be far in excess of the dye. State how much greater the bleach should be to be considered in large excess. If the due is 1 x 10-5 M how much can the bleach be diluted before you no longer..
a) The name acetic anhydride implies that the compound will react with water to form acetic acid. Write the equation for the reaction. b) Write the equation for the reaction by which aspirin decomposes in an aqueous ethanol solution.
Gas mixture contains helium and oxygen @ partial pressures of 255 torr and 0.450 atm. what is the total pressure in mmHg of the mixture after it is placed in a container 1/2 the volume of the original
after the reaction comes to equilibrium an additional 1.00g of o2g is added to the system. what is the expected partial
What is the rate constant of a first-order reaction that takes 5.80 minutes for the reactant concentration to drop to half of its initial value
Gluconeeogenesis a) occurs in the Golgi apparatus of skeletal muscle tissue b) is typically charaterized by increased flux of carbon skeletons from amino acid degradation into mitochondrial pools of pyruvate and oxaloacetate
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