Episode 02 - Podcasts - Series 1 - British Council
English Podcasts - Episode 02 - Podcasts - Series 1 - British Council
In this episode, Tess and Ravi talk about weekends away, and their guests talk about Shakira and dancing tango in Argentina.
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Episode 01 - Podcasts - Series 1 - British Council
Podcasts - Series 1 - British Council. Welcome to LearnEnglish podcasts!
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Rate equations of the form: kCACB TA = 1 + (KACA)^2 are required to describe the rates
Rate equations of the form:
kCACB TA = 1 + (KACA)^2
are required to describe the rates of some heterogeneous catalytic reactions. Suppose that the reaction: A + B → Products, occurs in the liquid phase. Reactant B is present in substantial excess, so that Cp does not change appreciably as Reactant A is consumed.
(a) The value of -rA goes through a maximum as CA is increased. At what value of CA does this maximum occur?
(b) The concentration of A in the feed to a continuous reactor is CA0 = 1.5/KA. The concentration of A in the effluent is 0.5/KA. Make a sketch of (1/(-rA)) versus CA that covers this range of concentration.
(c) One ideal continuous reactor will be used to carry out this reaction. Should it be a CSTR or PFR? Why?
(d) Would your answer in part C be different if the inlet concentration was CA0 = 1.5/KA and the outlet concentration was CA = 1.0/KA? Why?
Numerade Solutions
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TRUE or FALSE In muscle, the thick filaments are aggregates | Numerade Solutions
TRUE or FALSE In muscle, the thick filaments are aggregates of the protein myosin TRUE or FALSE myosin heads are where ATP binds and is hydrolyzed TRUE or FALSE Thin filaments are aggregates of protein actin TRUE or FALSE myosin thick filaments slide past actin thin filaments TRUE or FALSE Although weak individually, the cumulative effect of noncovalent interactions (hydrogen bonds, van der Waals interactions, etc ) can be significant in determining the tertiary structure of a protein TRUE FALSE Induced fit describes conformational changes in a protein and ligand when the ligand binds to the protein TRUE FALSE In positive cooperativity seen in hemoglobin, the first binding event increases the affinity at the remaining three binding sites TRUE FALSE Proteins can be denatured by pH extremes
TRUE FALSE Proteins can be denatured by heat
TRUE or FALSE Nonpolar gases dissolve easily in water
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