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2 years ago

What is a change in which energy is released is called

Chemistry

1 answer:

inessss [21]2 years ago

4 0

Answer: Chemical Reactions

Explanation:

Chemical reactions often involve changes in energy due to the breaking and formation of bonds.

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Organ system, because there are multiple organs that work together to help make the body function.

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2 years ago

How far above earth is the international space station

Rasek [7]

Answer:

248 miles

Explanation:

At an average altitude of 248 miles (400 kilometers) above Earth, the space station is the third brightest object in the sky.

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2 years ago

How do solids and liquids compare with each other?

Marizza181 [45]

I do believe it’s C if I’m wrong Myb fam

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2 years ago

Read 2 more answers

Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient

romanna [79]

Answer:

Coefficient of $H^{+}(aq)$ is more than 4

Explanation:

Oxidation: $Sn^{2+}(aq)\rightarrow Sn^{4+}(aq)$

Balance charge: $Sn^{2+}(aq)-2e^{-}\rightarrow Sn^{4+}(aq)$ ......(1)

Reduction: $Cr_{2}O_{7}^{2-}(aq)\rightarrow Cr^{3+}(aq)$

Balance Cr: $Cr_{2}O_{7}^{2-}(aq)\rightarrow 2Cr^{3+}(aq)$
Balance O and H in acidic medium: $Cr_{2}O_{7}^{2-}(aq)+14H^{+}(aq)\rightarrow 2Cr^{3+}(aq)+7H_{2}O(l)$
Balance charge: $Cr_{2}O_{7}^{2-}(aq)+14H^{+}(aq)+6e^{-}\rightarrow 2Cr^{3+}(aq)+7H_{2}O(l)$ .......(2)

$[3\times Equation-(1)]+Equation(2)$ gives balanced equation:

$3Sn^{2+}(aq)+Cr_{2}O_{7}^{2-}(aq)+14H^{+}(aq)\rightarrow 3Sn^{4+}(aq)+2Cr^{3+}(aq)+7H_{2}O(l)$

So coefficient of $H^{+}(aq)$ is more than 4

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2 years ago

What is the difference between a conductor and an insulator?

Zielflug [23.3K]

A conductor is what helps heat or electricity pass through an object. Examples of conductors are, silver, iron, aluminum, etc..

An insulator does the opposite and instead, stops either from going through. Examples of an insulator is paper, wood, rubber, etc.

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1 year ago