Cobalt-57 has a half-life of about 272 days. If a sample has an initial mass of 2.24 g and undergoes decay until it has a mass of 0.140 g, how many half-lives passed? A first-order reaction (A \to B) has a half-life of 30 minutes. If the initial concentration of A is 0.500...
I'm often enchanted by stories of great innovations that failed to find an application when they were first invented. While writing this article, for example, I was repeatedly reminded of the laser, which was once called a solution looking for a problem. Oh, what a difference a few decades...
The orbiter consists of the following parts: crew compartment - where you will live and work forward fuselage (upper, lower parts) - contains support equipment (fuel cells, gas tanks) for crew compartment forward reaction control system (RCS) module - contains forward rocket jets for turning the...
lowering the delta G value What role do enzymes play in cellular respiration? What is an enzyme? Explain. How does an enzyme speed up a chemical reaction? How can a single restriction enzyme produce more than two digested molecules? What role do enzymes play in metabolic processes? Consider...
There are as many reasons for a dog to bark as there are things for her to bark at. To correct unwanted barking, first you have to find out why she's barking. For some dogs, barking is triggered by thedoorbell, a passing car, or other common sound. Often this behavior can go on ...
For the reaction below, Delta H=760.4kJ/mole of S8 and Delta S=1219.1 J/(K*mole of S8).Calculate the equilibrium constant at 210C and at 440C.4CH4(g) + S8(s) <-> 4CS2(g) + 8H2(g)For the reaction of CH4 with S8 to form CS2 and H2, we are given Delta H= 150.3 kJ/mol...
to an ancient delta having buried the marine animals that lived there in sediment. The anemone fossils had been misidentified in 1979 when Merrill Foster, a Bradley University professor, conducted the first extensive study of the once gelatinous creatures. Labeling them the Essexella asherae ...
Both of these modern concepts are needed to really get to the more modern Delta G = - RTlnKeq in a satisfying way.The term ΣμidNi is a term added to the equation to account for the changes in material equilibrium. When a chemical reaction occurs the material composition of a system ...
Higher values can be used in case of noisy boards (in this case, the reaction to real OCP2 events is slower). LLC OC2 detection Size: 1 bit Enables / disables the LLC OC2 comparator. Available values are: 3.2.6 . Disabled . Enabled The LLC OC2 comparator is connecte...
the time of fast individual atomic motions (e.g., vibrations), (ii) the characteristic time of the reaction at hand, with the ensuing bond rearrangement, (iii) the equilibration time (in principle infinite, in practice long but finite) the system takes to go from the initial condition, e...