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If 28.1713 g of unknown was added to 859.6 g of phenol to prepare the solution, calculate the molar mass (MM) of the unknown.
An enzyme-catalyzed reaction produces a product that has a maximum absorbance at 412 nm. The extinction coefficient is 4000 M^-1 cm^-1. A 10-to-1 dilution of the enzyme is made and 20 microliter of the dilution are put into a cuvette with 80 micro..
The Cu-Ni system is an isomorphous one, meaning that the crystal structure does not change with alloying; in particular, Cu and Ni atoms randomly substitute for one another within a FCC crystal structure
The volume of a mass of gas is 950 ml at 700 torr pressure. What volumw will it occupy at 350 torr,the temperature
Phenolphthalein is an acid base indicator. What color does it possess in the presence of excess hydrogen (i.e., hydronium) ions?
Compound A is optically active and has the molecular formula C5H10O. On catalytic hydrogenation (addition of hydrogen) of A, Compound B is obtained
refrigerators are usually kept at about 5 c while room temperature is about 20 c. if you were to take an empty sealed
considering the energetics of change of H and change of S values of solute/solvent interation, solvent/solbent interactions and aolut/solvent interactions
What salt is produced in each of the following neutralization reactions?
Explain using resonance and inductive effects why trifluoroacetic acid (Pka = -0.25) is more acidic than ethanol (pKa = 16?
What is the volume of 135 mL of oxygen gas at 113°C and 870. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.
The reaction for the decomposition of dinitrogen monoxide gas to form an oxygen radical is: N2O--->N2 + O2. If the activation energy is 250 kj/mol and the frequency factor is 8.0 x 10^11 s^-1, what is the rate constant for the first order reaction..
consider the following reaction where x represents an unknown element6xs 2b2o3s rarr b4x3s 3xo2gif 175 g of x reacts
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