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xeze [42]
3 years ago
7

When this element was discovered, it exhibited luster and malleability, and it reacted very vigorously with water. This element

is never found as a free element in nature and always exists in a compound. To which group does this element most likely belong?
Chemistry
1 answer:
rjkz [21]3 years ago
5 0
The answer is potassium
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One atomic model describes electrons moving in clouds around the nucleus.
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Answer: D.  It is the currently accepted atomic model.

Explanation:

It is the mordern atomic model, also known as the Electron Cloud Model. Indicating that the nucleus of an atom is surrounded by a cloud of electrons.

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I need some help with chemistry. Let me know if you are good at it!
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Answer:

I think im good at it i have an A in the class

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The three major types of faults are normal, reverse and syncline. true or false
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The three major types of faults are Normal, Reverse and Strike-slip faults. 


Answer: FALSE
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What is one energy transformation that is taking place in the photo?
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To balance a chemical equation it may be necessary to adjust the
Mars2501 [29]

Answer:

  • <em>To balance a chemical equation it may be necessary to adjust the </em><u>coefficients.</u>

Explanation:

The <em>coefficients</em> of a <em>chemical equation</em> are the numbers that you put in front of each reactant and product. They are used to balance the equation and comply with the law of mass conservation.

By adjusting the coefficients you obtain the relative amounts (moles) of each product and reactant, i.e. the mole ratios.

Here an example.

The first information is what is called a word equation. E.g. nitrogen and hydrogen react to form ammonia:

  • Word equation: hydrogen + nitrogen → ammonia

  • Skeleton equation: H₂ + N₂ → NH₃

        This equation shows the chemical formulae but it is not balanced. The law of mass conservation is not observed.

So, in order to comply with the law of mass conservation you adjust the coefficients as follow.

  • Balanced chemical equation: 3H₂ + N₂ → 2NH₃

        As you see, it was necessary to modify the coefficients. Now the law of conservation of mass is observed and you get the mole ratios:

  • 3 mol H₂ : 1 mol  N₂ : 2 mol NH₃

       

4 0
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