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A 2059-kg elevator moves with an upward acceleration of 2.0 m/s2. What is the tension in the cable that supports the elevator?
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule
Tuning proton affinity. The pKa of an acid depends part,y on its environment. Predict the effect of each of the following environmental changes on the pKa of a glutamic acid side change.
Using the ideas regarding the effect of basic anions on salt solubility. Which order is correct for the solubility and the Ksp.
A 0.300 M solution of an acid, HZ, has a pH = 1.301. What is the value of the ionization constant, Ka, for this acid
If a 2.5 L reaction vessel initially contains 725 torr of cyclopropane at 485C , how long will it take for the partial pressure of cylclopropane to drop to below 105 torr?
A light green liquid, and informed that someone accidentally spilled a few small flecks of an intensely green-colored crystalline dye in a rather expensive solvent, so it doesn't make sense to throw away the very slightly contaminated solvent.
The hemoglobin of blood, a protein, is known to contain 0.335% iron by mass, Structural evidence indicates that there are four atoms of iron per molecule
Compute the equilibrium constant, Keq, for the reaction of equimolar amounts of acetophenone, C6H5COCH3, and hydroxide ion to generate the enolate ion.
Rb has two naturally occurring isotopes 85Rb and 87Rb, with masses 84.9118 amu and 86.9092 amu, respectively. The average atomic mass is 85.468 amu.
Suppose 532 mL of neon gas at 20C and 1.04 atmospheres and 376 mL of SF6 gas at 20C and 0.97 atmospheres are put into a 275-mL flask. If the temperature remains constant, calculate the partial pressure, in atmospheres, of the SF6 gas in the mixtur..
How many degrees of unsaturation are there in a molecule with the molecular formula C10H14O
The ester ethyl p-nitrobenzoate is more reactive towards nucleophilic acyl substitution than ethyl p-methyoxybenzoate.
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