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For a single-substrate enzyme-catalyzed reaction, calculate the change in substrate concentration required to increase the rate of reaction from 10% to 90% of the limiting rate. What further change would be required to increase the rate to 95% of the limiting rate?
Under certain conditions the maximum specific activity of a purified preparation of triosephosphate isomerase was quoted as 10,000μmoles glyceraldehyde 3-phosphate transformed per mg protein per minute. Express this in terms of katal kg-1 and evaluate the turnover number of the enzyme given that its molecular weight per active site is 26,500 Da.
A cylinder containing a mixture of N2 and O2 is taken from the basement to the top of a 50-story building. Assuming that the temperature remains constant, which of the following properties of the gas change during the ascent
Calculate the No. of moles of KHP? (b) How many moles of NaOH will react with the KHP in dissolved water? (c) Calculate the molarity of the NaOH solution?
Alpha-linolenic acid is one of a large group of fatty acids that are found in fish oil, walnuts and canola seeds. These nutrients are essential for good health. All of these fatty acids consist of an unsaturated hydrocarbon that is terminated by a..
A solution containing HNO2 has pH=3.40 at equilibrium. Calculate the amount of HNO2 present in 575ml of this solution Ka=0.0004 answer is 0.01 g of HNO2
If the temperature of a sample of gas with an initial volume of 1.75 is increased form 15.0 c to 30.0c, what will the final volume be.
For a certain reaction, = 8.38×10?4 and 9.24×10?5 . Calculate the value of the reverse rate constant, , given that the reverse reaction is of the same molecularity as the forward reaction.
In which of the following carbohydrates are two different types of glycosidic bonds present
How many grams of dry need to be added to 2.50 of a 0.700 solution of ammonia, , to prepare a buffer solution that has a of 8.65. for ammonia is.
1.5000 g of diprotic weak acid H2A was dissolved in 100.00 mL volumetric flask. 25.00 mL aliquots of this solution was titrated with a monoprotic strong base NaH (0.0800 M). The titre volume of NaOH was 40.00 mL. Calculate the molecular weight of ..
Since there isn't an oxygen or some other electronegative atom in the molecule I'm not sure which peaks are which.
What is the maximum number of grams of NH4SCN (s) that can be prepared from 9.00 g of CS2 (L) and 3.00 g of NH3 (g). The reaction is CS2 (l) + 2 NH3 --> NH4SCN (s) + H2S (g)
Calcium chloride (CaCl2; very soluble) has been sold as a more effective de-icer than NaCl to spread on icy sidewalks. What would be the ionic strength of a solution
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