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The prothrombin time ratio is the ratio of a subject's measured prothrombin time (in seconds) to the normal laboratory reference PT. The PT ratio varies depending on the specific reagents used, and has been replaced by the INR. [3] Elevated INR may be useful as a rapid and inexpensive diagnostic of infection in people with COVID-19. [4]
In electrochemistry, a thermoneutral voltage is a voltage drop across an electrochemical cell which is sufficient not only to drive the cell reaction, but to also provide the heat necessary to maintain a constant temperature.
However, the corresponding Gibbs free energy changes (∆G°) must satisfy ∆G° = – z FE°, where z electrons are transferred, and the Faraday constant F is the conversion factor describing Coulombs transferred per mole electrons. Those Gibbs free energy changes can be added.
Platinum disulfide is the inorganic compound with the formula Pt S 2.It is a black, semiconducting solid, which is insoluble in all solvents.The compound adopts the cadmium iodide structure, being composed of sheets of octahedral Pt and pyramidal sulfide centers.
The relative activity of a species i, denoted a i, is defined [4] [5] as: = where μ i is the (molar) chemical potential of the species i under the conditions of interest, μ o i is the (molar) chemical potential of that species under some defined set of standard conditions, R is the gas constant, T is the thermodynamic temperature and e is the exponential constant.
F 2 Pt: platinum difluoride: 18820-56-9 F 2 Pu: plutonium difluoride: 20882-15-9 F 2 S: sulfur difluoride: 13814-25-0 F 2 SW: tungsten difluoride monosulfide: 41831-78-1 F 2 S 2: difluorodisulfane: 13709-35-8 F 2 S 2: thiothionyl fluoride: 16860-99-4 F 2 S 2: thiothionyl fluoride: 101947-30-2 F 2 S 2 W: tungsten difluoride disulfide: 41831-81-6 ...
where A and B are reactants C is a product a, b, and c are stoichiometric coefficients,. the reaction rate is often found to have the form: = [] [] Here is the reaction rate constant that depends on temperature, and [A] and [B] are the molar concentrations of substances A and B in moles per unit volume of solution, assuming the reaction is taking place throughout the volume of the ...
In electrochemistry, exchange current density is a parameter used in the Tafel equation, Butler–Volmer equation and other electrochemical kinetics expressions. The Tafel equation describes the dependence of current for an electrolytic process to overpotential.