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anzhelika [568]

3 years ago

9

3. Gasoline, coal, batteries, and logs all have chemical energy. When they burn that chemical energy will be transformed into en

ergy.

1 answer:

Arturiano [62]3 years ago

3 0

Answer:

Thermal energy

Explanation:

When gasoline, coal, batteries and logs are all burn they transform chemical energy to thermal energy.

The chemical energy is the energy held between chemical chains and bonds within an atom.

When they combust, they release thermal energy
Chemical energy is a potential energy.
The thermal energy is a kinetic energy
It increase the average motion of the particles in the medium
The breaking bond when produces heat which is a form of thermal energy.

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How many atoms are ln 6.31 moI of sodium sulfate

Art [367]

896.27
One mole of sodium sulfate is 143.04, so just multiply that times 6.31.
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Answer:

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A horse gallops along a racecourse at a speed of 40 km/h. It takes the horse 3 minutes to run the length of the track.

Natali [406]

To convert minutes to hours we divide the minutes by 60. So if we divide 3 by 60 we get 0.05 hours.

<h3>How to convert minutes into hour?</h3>

We know that in hour, there are 60 minutes so if we go from minutes to hours then we have to divide the number by 60 and when we go from hours to minutes we multiply with the same 60 number.

So we can conclude that to convert minutes to hours we divide the minutes by 60. So if we divide 3 by 60 we get 0.05 hours.

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2 years ago

Which two substances are covalent compounds? * C6H12O6(s) and KI(s) C6H12O6(s) and HCl(g) KI(s) and NaCl(s) NaCl(s) and HCl(g)

Ray Of Light [21]

Answer: Option (b) is the correct answer.

Explanation:

A covalent compound is defined as the compound in which sharing of electrons take place between the combining atoms. Generally, when two or more non-metals chemically combine together the it will lead to the formation of a covalent compound.

For example, $C_{6}H_{12}O_{6}$ and HCl is also a covalent compound.

And, a compound in which transfer of electrons occur between the combining atoms is known as an ionic compound. Whenever, a metal chemically combines with a non-metal then it will always lead to the formation of an ionic compound.

For example, KI is an ionic compound.

Thus, we can conclude that $C_{6}H_{12}O_{6}$ and HCl are the two substances which are covalent compounds.

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3 years ago