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kvasek [131]
2 years ago
11

Early historical models of the solar system were geocentric. Which of these phrases describes a geocentric solar system?

Chemistry
2 answers:
Leona [35]2 years ago
7 0
I believe the answer is A
likoan [24]2 years ago
3 0

Answer:

A

Explanation:

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Any substance which yields a hydrogen ion when placed in a water solution is call an——-
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in the excited state

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2 years ago
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:

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

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\Delta G=-372490 J

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