Using salt (NaCl) as an example-how are elements & compounds different?

1 answer:

4 0

Both salt and sugar have radically different properties (both ... known as table salt, is an ionic compound with the chemical formula NaCl, ...

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How many electrons are in ewch energy levels

joja [24]

Answer:

To determine how many electrons fit in each energy level, use the formula:

2n²

N is equal to the number of energy levels. Using this formula, we can determine that there are:

First energy level holds 2 electrons
Second energy level holds 8 electrons
Third energy level holds 18 electrons
Fourth energy level holds 32 electrons
And so on...

Keep in mind though, that for an atom's outermost shell, it can only contain 8 valence electrons due to the octet rule that states that an element only needs eight electrons in their outermost shell in order to be stable.

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3 years ago

What has56 protons and 54 electrons and 74 neutrons

Neko [114]

Answer:

This is isotope of barium

Explanation:

It has atomic number of 56, mass number is 130 (56 + protons + 76 neutrons) oxidation number is +2 it has two more protons than electrons ( 56 - 54 = 2 )

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3 years ago

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10. Hydrogen and sulfur combine to make hydrogen sulfide.

Genrish500 [490]

Answer:

H₂S

Explanation:

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4 years ago

What is the Net Force?<br> 2N ><br> 4N -<br> SN

maria [59]

The net force is SN haha

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4 years ago

A system at equilibrium has two aqueous products and two aqueous reactants. An additional amount of one of the products is added

devlian [24]

Answer: c. the amounts of the reactants

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle. This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

For the given reaction:

$A(aq)+B(aq)\rightleftharpoons C(aq)+D(aq)$

If the concentration of one of the products is increased, so according to the Le-Chatelier's principle, the equilibrium will shift in the direction where decrease of concentration of product takes place. Therefore, the equilibrium will shift in the left direction i.e. towards the reactants and thus more reactants will be formed.

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4 years ago