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4 years ago

What type of energy is this and why?

Chemistry

1 answer:

Murljashka [212]4 years ago

4 0

Answer:

I make not know because im the 7th grade but Im give my worthy guess I now this its endothermic

Explanation:

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Earth’s mantle is a _____.

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A layer of hot liquid rock

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4 years ago

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Which rock is an example of a clastic sedimentary rock?

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The correct answer is Shale

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3 years ago

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How many electrons would be transferred in either a voltaic or electrolytic cell that uses the following half reactions

omeli [17]

Answer:

Numbers of electrons transferred in the electrolytic or voltaic cell is 6 electrons.

Explanation:

$Fe^{3+} (aq) + 3 e^-\rightarrow Fe (s) ,E^o = -0.036 V$

$Mg^{2+}(aq) + 2 e^- \rightarrow Mg (s),E^o = -2.37 V$

The substance having highest positive reduction $E^o$ potential will always get reduced and will undergo reduction reaction.

Reduction : cathode

$Fe^{3+} (aq) + 3 e^-\rightarrow Fe (s) ,E^o = -0.036 V$ ..[1]

Oxidation: anode

$Mg(s)\rightarrow Mg^{2+}(aq) + 2 e^-,E^o = 2.37 V$ ..[2]

Oxidation reaction occurs at anode and reduction reaction occurs at cathode.

To calculate the $E^o_{cell}$ of the reaction, we use the equation:

$E^o_{cell}=E^o_{red,cathode}-E^o_{red,anode}$

$E^o_{cell}=-0.036V-(-2.37 V)=2.334 V$

The overall reaction will be:

2 × [1] + 3 × [2] :

$2Fe^{3+} (aq) + 3Mg(s)+6e^-\rightarrow 2Fe (s)+3Mg^{2+}(aq)+6e^-$

Electrons on both sides will get cancelled :

$2Fe^{3+} (aq) + 3Mg(s)\rightarrow 2Fe (s)+3Mg^{2+}(aq)$

Numbers of electrons transferred in the electrolytic or voltaic cell is 6 electrons.

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3 years ago

Balance the equation

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Explanation:

3C3+2H4+9O=3CO3+4H29o

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3 years ago

If earth did not rotate what would happen to the hlobal wind

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It would probably stop moving. Earth has motion and we do do. without the world moving, there would be No wind at all.

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3 years ago