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Cloud [144]
2 years ago
5

Review the following list and select either an "h" if the item is a hazard, a "b" if it's a benefit, or "hb" if it can be both a

hazard and a benefit. pyroclastic flows volcanic ash geothermal energy lahars lava flows volcanic materials (pumice, lava rock)
Chemistry
2 answers:
pshichka [43]2 years ago
8 0
Pyroclastic flows, lava flows, and lahars are hazardous 
geothermal energy is beneficial
<span>volcanic ash</span> and volcanic materials can be both hazardous and beneficial

This questions somewhat depends on what the opinion who ever wrote the question so I don't know if all of what I said is correct according to your who wrote this but is what I believe is correct.  

I hope this helps.  Let me know if anything is unclear.
Finger [1]2 years ago
4 0

The answers are

pyroclastic flows-H

volcanic ash-HB

geothermal energy-B

lahar-H

lava flows-H

volcanic materials (pumice, lava rock)-B

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3 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]

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a)\Delta G=372490 J

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\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:

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

\Delta G=-372490 J

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

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

\Delta G=-568614 J

7 0
2 years ago
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