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What has a complete ionic equation of Mg s plus Zn2 plus plus 2NO3- Mg2 plus plus 2NO3- plus Zn s?
NO3-
What is the complete ionic equation for NaOHaq plus HCIaq equals H2OI plus NaCIaq?
Na+ plus OH- plus H+ equals H2O plus Na+ plus Cl-
Use of boltzmann equation in electrophysiology?
The boltzman equation describes thermodynamic systems not in equilibrium. It is a kinetic equation that describes changes in macroscopic quantities such as energy or charge. The field of electrophysiology studies properties of excitable cellular membranes as these electric properties are essencial for signal transport within the organisms. Among other things, electrophysiologists measure how electric currents flowing through ionic channels sitting in cellular membranes change in response to changes in voltage or different ion concentraions accross the membrane. These measurements can describe properties of the channels such as ionic conductance, selectivity, sensitivity to toxins/drugs, channel opening/closing kinetics, etc. The Boltzman equation helps fitting curves that describe these voltage-current relationships.
What is the physical significance of the Nernst-Einstein equation?
An equation relating the limiting molar conductivity Λm 0 (see Kohlrausch's law) to the ionic diffusion coefficients, devised by Nernst and Albert Einstein. The Nernst-Einstein equation is Λm 0=(F 2/RT)(v+ z+ 2 D++v– z– 2 D–), where F is the Faraday constant, R is the gas constant, T is the thermodynamic temperature, v+ and v– are the number of cations and anions per formula unit of electrolyte, z+ and z– are the valences of the ions, and D+ and D– are the diffusion coefficients of the ions. An application of the Nernst-Einstein equation is to calculate the ionic diffusion coefficients from experimental determinations of conductivity. Λm 0=(F 2/RT)(v+ z+ 2 D++v– z– 2 D–)
What is a true solution in chemistry?
A true solution is where you can't differentiate between the solute and solvent molecules even at the microscopic level. It is completely homogeneous. For example, milk seems to be completely homogeneous but it isn't. Milk is actually has a suspension of fat molecules which are not dissolved at all. A true solution is a homogeneous solution in which the solute particles have diameters less than 10-7cm. The solute particles are of molecular dimensions. The particles are invisible even under powerful microscopes. For example, sodium chloride in water is a true solution. Most ionic compounds form true solutions in water. Organic compounds like sugar and urea also form true solutions in water.
