CHEN 3101 Lecture Notes - Lecture 1: Plug Flow, Alsn, Mesa

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25 Dec 2014

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generic devices piston ports k = 1 k = 2 k = 3. # inlet outlet ports k = 1 k. Mass balance: m(t) = mass w/in system boundaries dm/dt = accumulation. = mass flow rate into system @ port k inlets (inputs into the system) > 0 outlets < 0. Energy is carried into or out of the system with material (aka advection) Work done on system pressure exerted @ ports (flow work) Imagine boundary shoved up the pipe a bit system energy/mass in port k. [=] mass/time * energy/mass --> {rate of energy advection in port k} E = total energy = u + ekin + epot advection. Chose mass basis to simplify specific kinetic and potential energies. Examples: imagine you have a really high water fall (open system) k = 1 k = 2. Chen thermo page 5 another example: rocket here, kinetic energy matters more k = 1.

Related Questions

I. Arrange the following ions according to ionization energy, basedon principles learned in lecture:

Na, Cl, Cs, C, K, Ne⁺, F, Ne

Your answer will be of the formA<B<C<D<E<F<G<H . Place the symbol for eachatom or ion in the appropriate blank below:

____ < ____ <____ <____ <____ <____ < ____ < ____

1 2 3 4 5 6 7

Explain why Nehas larger or smaller ionization energy than Ne⁺. __________________________________________

_________________________________________________________________________________________________

II. Arrangethe following ions according to expectedsize (radius), based on principles learned in lecture:

K, F⁺,Rb, Co²⁵⁺, Br, Rb^-, F, Mg

Your answer will be of the formA<B<C<D<E<F<G<H . Place the symbol for eachatom or ion in the appropriate blank below:

____ < ____ <____ <____ <____ <____ < ____ < ____

1 2 3 4 5 6 7

Explain why F has larger or smaller radius than Mg.__________________________________________

1)Methadone, C₂₁H₂₇ON, is a drug used to treat individuals suffering from opioid addiction. Methadone is a weak base with pK_b=5.60. Methadone is frequently administered in the form of its hydrochloride salt, methadone hydrochloride (C₂₁H₂₇ONHCl). Calculate the pH of a 0.400M solution of methadone hydrochloride.

[Refer to page 204 in the lecture note manual for a similar problem or watch the Tutorial Video on Moodle for the calculation of the pH of a solution of a drug salt]

Report your answer to two decimal places

2)Calculate the molar solubility of manganese hydroxide in a solution buffered at pH = 10.25.

Mn(OH)₂ (K_sp = 1.9Ã10^â13)

CHEN 3101 Lecture Notes - Lecture 1: Plug Flow, Alsn, Mesa

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