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Metabolic reactions are regulated by a variety of regulatory mechanisms. Mention and discuss five mechanisms. Give clear examples of each.
Limestone (CaCO3) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts with sulfur dioxide to form calcium sulfite
If the pH of such a phosphate-containing solution were gradually lowered by addition of HCl or some other strong acid, what three protonated phosphate species would be generated? (Specify the chemical formula and name of each.)
how many kcals of heat energy would be required to vaporize 35 grams of h2o that demonstrated a temp. of 246
An oxygen molecule having the average velocity at 300K is released from the earth's surface to travel upward. If it could move without colliding with other moleucules, how high would it go before coming to rest. How high could it go if it had the ..
An allosteric enzyme that follws the concerted mechanism (MWC model) has T/R ratio of 300 in the absence of substrate. Suppose that a mutation reversed the ratio.
The concentration of commercially available concentrated nitric acid is 70.0 percent by mass, or 15.9M in 100 grams of solution, there are 1.11 mol of HNO3. Calculate the volume of 100 g of solution
three student chemists measured 50.0 ml of 1.00 m naoh in seperate styrofoam coffee cups calorimeters. brett added 50.0
Calculate the freezing point of a solution of 500.0 g of ethylene glycol (C2H6O2) dissolved in 500.0 g of water. Kf = 1.86 degrees C/m and Kb
A solution is prepared by dissolving 20.0 g of K2HPO4 and 25.0 g of KH2PO4 in enough water to produce 1.0 L of solution. What is the pH of this buffer
Compute the work of expansion(in Joules) accompanying the complete combustion of 1.0 grams of sucrose C 12 H 22 O 11 to CO 2 and (a) liquid water, (b) water vapour at 20 degrees Celsius when the external pressure = 1.0 atm
A 90.0 g piece of hot iron is placed in a calorimeter containing 125 mL water at 19.8 degrees celcius. If the final temperature of both the water and the iron is 24.6 degrees celcius, what is the initial temperature of the hot iron?
Hydrochloric acid reacts with calcium to form hydrogen and calcium chloride. If 100 grams of hydrochloric acid reacts with 100 grams of calcium, what is the limiting reagent
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