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3 years ago

Which of the following is an endothermic process?

Chemistry

2 answers:

Neporo4naja [7]3 years ago

6 0

Hello There!

A Heat Pack is An Example Of A Endothermic Process.

An Endothermic Reaction Is A Reaction That Requires Energy To Move Forward.

Sav [38]3 years ago

4 0

<h2>Answer:</h2>

An endothermic process is <u>D. a cold pack, cooling</u>.

<h2>Explanation:</h2>

Endothermic reaction is that type of chemical reaction that requires heat from the surrounding for the reaction to occur. It basically draws heat from the environment to imitate the reaction. The process of using a cool pack for cooling is also an example of endothermic reaction as the heat is absorbed from the surrounding object by the cool pack.

Due to this heat, the ice in the cool pack begins to melt. This process is considered endothermic because the physical change in state of ice into water is not possible without the heat from the surrounding.

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ANEK [815]

Answer:

m/s2

0.2

m/s2

Explanation:

if F=ma, then a = F/m. The unit to measure acceleration is typically m/s2.

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3 years ago

Complete the following table of neutralization reaction and also write down the names of acid base and salt in it.

scZoUnD [109]

Answer:

SO4

Explanation:

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3 years ago

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two don't act

Aliun [14]

<h2>Hydrogen Bonding</h2>

Explanation:

Hydrogen bonding is a type of weak bond.
Hydrogen Bonding occurs when the hydrogen atom of one molecule is bonded with a molecule of high electronegativity element like nitrogen of another molecule.
It is a type of dipole-dipole interations.
The nitrogen is a highly electronegative element that forms a weak bond with the hydrogen atom of another molecule with dipole-dipole interaction.
Hydrogen bonds are weaker than covalent and ionic bonds.
Therefore the type of bond is Hydrogen bond.

8 0

3 years ago

Select the correct image.

masya89 [10]

Answer:

Explanation:

In all the other options either Carbon has more than 4 atoms attached or less than 4.

Carbon can not form more than four bonds. It can only share 4 electrons .

In other option C, No H-atom is linked in the right most Carbon.

whereas according to the definition of Hydrocarbon it should have been a Hydrogen atom.

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3 years ago

Which of the following is not an example of a molecule?

9966 [12]

D. F

Molecules are a group of bonded atoms but Fluorine stands on its own

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3 years ago

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