Problem 1. Spherical pellet in a spherical tank. In class, we considered the time-varying PDE model of the spherical pellet suspended in a spherical tank where there is a zero-order reaction consuming the solute dissolving from the pellet. We can assume a pseudo steady state, which is not quite at steady state but the changes are occurring so slow that for all practical purposes the dissolution rate is equal to the rate of consumption. Further, note that the pellet is going to shrink with time but if we assume it does so very slowly, we can assume that at pseudo steady state, the pellet radius is constant. Pseudo steady states are useful approximations in modeling chemical and biological processes. Derive the concentration profile in the tank at pseudo steady state. Hint: You will have to integrate twice!

Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback

What is the molar mass of a gas that has density of 2.054 g/l

Are oil and water a mixture or solution