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masha68 [24]
3 years ago
5

What is chemical change ?​

Chemistry
2 answers:
nikitadnepr [17]3 years ago
8 0

\huge{ \color{violet}{ \boxed{ \color{hotpink}{Answer}}}}

<h3>➣ Chemical Change</h3>
  • It occurs when new materials are formed by a change in the way the atoms are bonded together.

  • Heat, light or electrical energy is often emmitted or absorbed.

\:

\large\tt\:⚘ \: MishiChaeYoon \: ⚘

Ksju [112]3 years ago
3 0
Change in chemical bonds that alters what a reaction would be

Pls give me a brainliest thx
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A molecular covalent substance (such as co2) has a low melting point because the covalent bonds that hold the molecules together
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A molecular covalent substance (such as co2) has a low melting point because the covalent bonds that hold the molecules together are weak and do not require much energy to break:- False.

What are covalent bonds ?

An electron transfer that leads to the formation of electron pairs between atoms is known as a covalent bond. When atoms share electrons, a stable balance of the repulsive and attractive forces among them is known as covalent bonding. These electron pairs are also known as bonds or shared pairs.

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2 years ago
For the reaction, Cl2 + 2KBr --&gt; 2KCl + Br2, how many moles of potassium chloride, KCl, are produced from 102g of potassium b
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Solution :

From the balanced chemical equation, we can say that 1 moles of KBr will produce 1 moles of KCl .

Moles of KBr in 102 g of potassium bromide.

n = 102/119.002

n = 0.86 mole.

So, number of miles of KCl produced are also 0.86 mole.

Mass of KCl produced :

m = 0.86 \times Molar \  mass \ of \  KCl\\\\m = 0.86 \times 74.5 \ gram \\\\m = 64.07\  gram

Hence, this is the required solution.

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Energy released from cell respiration is know as
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