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Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction. half-reaction i

Natasha2012 [34]

Answer: Oxidation reaction: $Al(s)\rightarrow Al^{3+}(aq)+3e^-$

Reduction reaction: $Sn^{2+}(aq)+2e^-\rightarrow Sn(s)$

Overall redox reaction : $2Al(s)+3Sn^{2+}(aq)\rightarrow 2Al^{3+}(aq)+3Sn(s)$

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

$Al(s)\rightarrow Al^{3+}(aq)+3e^-$

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

$Sn^{2+}(aq)+2e^-\rightarrow Sn(s)$

Overall redox reaction : $2Al(s)+3Sn^{2+}(aq)\rightarrow 2Al^{3+}(aq)+3Sn(s)$

5 0

3 years ago

The 2nd Law of Thermodynamics states that when energy is converted from one form to another, some is always lost due to _____, w

Vinil7 [7]

<h2>Enthalpy Difference</h2>

Explanation:

The 2nd Law of Thermodynamics states that when energy is converted from one form to another, some is always lost due to difference in the enthalpy of the system, which always increases.
Enthalpy may be defined as the amount of energy that is stored.
During a chemical reaction, the system will absorb or gives out energy in the form of heat and light.
The change in energy during a chemical reaction is due to the difference in the energy amount of reacting species and species that are formed.

5 0

3 years ago

Come up with 2 examples of derived units from everyday life.

kirill115 [55]

Answer:

answer

Explanation:

Area : Square Meters,

Volume : Cubic Meters,

Density : Kilograms per Meter Cube,

Velocity : Meters per Second Squared,

Force : Newtons (Mass multiplied by Acceleration or Mass multiplied by Displacement divided by Time squared)…..

5 0

3 years ago

A cylinder contains water to a level of 15.5. 20.0 grams of copper is dropped in. What will be the new height of the water? (Den

Julli [10]

The new height of the water is 17.7 mL

The density of a substance is simply defined as mass per unit volume of the substance. Mathematically, it is expressed as:

<h3>Density = mass / volume </h3>

With the above formula, we can obtain the volume of the copper. This can be obtained as follow:

Mass of copper = 20 g

Density of copper = 8.96 g/mL

<h3>Volume of copper =?</h3>

Density = mass / volume

8.96 = 20 / volume

Cross multiply

8.96 × Volume = 20

Divide both side by 8.96

Volume = 20 / 8.96

<h3>Volume of copper = 2.2 mL</h3>

Finally, we shall determine the new height of the water. This can be obtained as follow:

Initial height of water = 15.5 mL

Volume of copper = 2.2 mL

<h3>New height of water =?</h3>

<h3>New height of water = (Initial height of water) + (Volume of copper)</h3>

New height of water = 15.5 + 2.2

<h3>New height of water = 17.7 mL</h3>

Therefore, the new height of the water is 17.7 mL

Learn more: brainly.com/question/24679715

7 0

3 years ago

elements on the right side of the periodic table differ from the elements on the left side because elements on the right side

expeople1 [14]

Sooo the answer will be I don’t know

6 0

3 years ago

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