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Sveta_85 [38]
3 years ago
13

Mucin, a component of saliva, functions to __________.

Chemistry
1 answer:
Mariulka [41]3 years ago
4 0
A critical function of mucin in saliva is to protect the mouth from drying out. Mucin also lubricates the tissues and teeth in the mouth and protects them against pathogens and toxins
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Free-energy change, ΔG∘, is related to cell potential, E∘, by the equationΔG∘=−nFE∘where n is the number of moles of electrons t
mart [117]

Answer:

a)\Delta G=372490 J

b)\Delta G=-568614 J

Explanation:

a) The reaction:

Mg(s) +Fe^{2+}(aq) \longrightarrow Mg^{2+}(aq) + Fe(s)

The free-energy expression:

\Delta G=-n*F*E

E=E_{red}-E_{ox]

The element wich is reduced is the Fe and the one that oxidates is the Mg:

-0.44V=E_{red}-(-2.37V)=1.93V

The electrons transfered (n) in this reaction are 2, so:

\Delta G=-2mol*96500 C/mol * 1.93 V

\Delta G=-372490 J

b) If you have values of enthalpy and enthropy you can calculate the free-energy by:

\Delta G=\Delta H - T* \Delta S

with T in Kelvin

\Delta G=-675 kJ*\frac{1000J}{kJ} - 298K*-357 J/K

\Delta G=-568614 J

7 0
3 years ago
The blank
Alik [6]
I think it’s “number” and “type”
5 0
3 years ago
Select all
Schach [20]

Answer: The correct option is option d

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The basic purpose of science is to try new things or ways to get an outcome by constant perseverance on research and negating the ways that don't work thus giving and improving knowledge of what is correct and what is not to make a new Discovery or invention.  

7 0
3 years ago
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S_A_V [24]
For the question given above, option 2 which is H-Cl pair of atoms has the most polar bond among the four of them. 

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To balance a half-reaction in basic solution, you need to add enough of which substances to balance the equation?
LenKa [72]
I'm not sure if this is what you're looking for, but I suppose you would have to have the solute and the solution to balance the reaction.
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3 years ago
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