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Does each of the following statements describe a simple enzyme or an enzyme that requires a cofactor?
contains riboflavin or vitamin B2has four subunits of polypeptide chainsrequires Fe3+ in the active site for catalytic activity
Sodium borohydride is a strong base as well as a reducing agent. Why would it be better to add the NaBH4 solution to a base-sensitive substrate
For each of the five principles of biochemistry give an example(step or series) from a biochemical pathway that satisfies each principle
Write out the chemical equation and the equilibrium constant expression based on the concentration.
how many grams of NO are required to produce 145 g of N2 in the following reaction? 4NH3+6NO-- 5N2+6H2O
The mass % of Ca in CaSo4 is 29.45%. To calculate the mass of Ca present in a 25.6 g sample of this compound, the correct procedure is given by
what class of compounds is this characteristic and why and how can the relative scarcity of drugs that fluorescence be an advantage in some instances and a disadvantage in others?
A sea water has a density of 1.025g/ml.if sea water is about 1.45% cl by mass, how much .1M silver nitrate is needed to titrate a 5 ml sample
What mass of sucrose should be combined with 461g of water to make a solution with an osmotic pressure of 8.80 atm at 280 K
In an experiment a 0.00400 mol/L solution of sodium thiosulfate is prepared. 20 grams of regular salt is placed in one beaker and 20 grams of Iodide salt is placed in another beaker. 3.0 grams is KI was placed into each beaker.
Give the symbol of the element in the fifth period of the periodic table with five valence electrons, Give the symbol of the element in the fourth period of the periodic table with four 4p electrons
A solution was made by dissolved 2.0 g of an unknown non-electrolyte in 25 g of acetic acid. The solution boiled at 119.6 degrees C. Calculate the molar mass of the non-electrolyte.
A researcher studying the nutritional value of a new candy places a 5.30-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen.
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