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A sphere with radius of 2 m is entirely immersed in water. (1) Find the buoyant force on the sphere by water. (2) Find the buoyant force by the air. (Given water and air densities to be is 1000 kg/m3 and 1.3 kg/m3, respectively)
Problem- What is the proton concenteration in a solution of 102.7 mM acetic acid (this concentration represents the sum of both the acetic acid and the deprotonated acetate) at pH 5.77 if the pKa of acetic acid is 4.76. Report your answer in micro..
Xenon gas is released during a certain chemical reaction and pushes back the atmosphere with a change in volume of the vessel (it has a movable piston) from 2 to 20 Liters. Calculate the work done by this release of gas.
what mass of H2O is required to form 1.6 l of O2 at a temperature of 273 k and pressure of .936 atm
Quantum dots are unique class of semiconductor because they are so small, ranging from 2-10 nanometers in diameter. The size of pencil lead in a mechanical pencil is 0.0197 inches.
Propose a detailed mechanism for the acid - catalyzed Fisher esterification of propanoic acid
Assuming that an enzyme uses a mechanism similar to that of chymotrypsin, determine which residue of the catalytic triad (Asp, His, Ser) corresponds to pKa of 6.25 and 8.75.
question how do you determine the charge of an electron when given the number of moles of electrons and the amount of
A buffer is initially 0.180M in 4-nitrophenol (HC6H4NO3) and 0.200M in potassium 4-nitrophenolate (KC6H4NO3). The Ka of 4-nitrophenol is 3.8*10^-4 and the buffer has a pOH = 3.47. If 0.20g on NaOH were added to 100ml of this buffer what would the ..
Describe the reaction as a balanced chemical equation that occurs when methane which is a natural gas, CH4 is burned in the presence of excess oxygen, O2. If 100g of Butane are reacted with unlimited amounts of oxygen
one-dimensional infinite potential well has a particle in the state n1 . determine the probability of particle would be
a student carried out a reaction that transformedcyclohexanol into cyclohexanone. would it be easy for her
depict the hydrogen bonding three water molecules in a
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