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An enzyme has a maximum velocity of 48 nmoles substrate converted per sec. In the presence of 4 microM inhibitor, Vmax is 36 nmoles substrate converted per sec with no change in Km. Determine the Ki of the inhibitor. What type of inhibitor is this?
The solubility of barium sulfate varies with the composition of the solvent in which it was dissolved. In which solvent mixture would BaSO4 have the lowest solubility
If the half-life of a first-order reaction is 4.609 hours what is the instantaneous rate of the reaction in M/day when the concentration of A equals 0.251 M?
When ammonia is burned in oxygen, free nitrogen gas and water are produced. What volume of ammonia will react completely with 25.0 L of oxygen? What volume of nitrogen gas is formed?
Calorimetry is a method used to measure changes in enthalpy, or heat, that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant-volume (or "bomb") calorimeters
How much heat is required to warm 1.50 L of water from 30.0 C to 100.0 C? (Assume a density of 1.0g/mL for the water.)
Find the pH and percent dissociation of a 0.100 M solution of a weak monoprotic acid having the following Ka value. Ka = 1.0 x 10^-5
How many grams of steam are produced. How many moles of limiting reagent remain unreacted. How many moles of excess reagent remain unreacted
Find the entropy change of the system and of the surroundings if 3.000mole of water freezes reversibly at 1.000atm. the freezing temperature is 0.00C at this pressure, and the specific enthalpy change of fusion is equal to 79.7cal/gm at this tempe..
determine the number of calories and joules required to melt the ice given the following informationinitial water
A supersaturated solution of potassium nitrate is formed by adding 150 g KNO3 to 100 g water, heating until the solute completely dissolves is agitated, how much potassium nitrate will perciapitate.
A salt water mixture is 33.0% (w/w) walt. (The w/w refers to weight / weight or mass / mass). If there are 300.0 g salt in the mixture, what is the total weight of the mixture?
Ammonia is produced by the Haber process, in which nitrogen and hydrogen are reacted directly using an iron mesh impregnated with oxides as a catalyst. For the reaction
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