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3 years ago

Oque é um hibrido de ressonancia?

Chemistry

2 answers:

Yuri [45]3 years ago

8 0

Answer:

Resonance hybrid: A weighted average of all significant resonance contributors depicting the true electronic structure of a molecule.

Explanation:

Translation: Híbrido de ressonância: uma média ponderada de todos os contribuintes de ressonância significativos, representando a verdadeira estrutura eletrônica de uma molécula.

Rainbow [258]3 years ago

4 0

Answer:

el híbrido de resonancia es un promedio ponderado de todos los contribuyentes de resonancia significativos que representan la verdadera estructura electrónica de una molécula.

Explanation:

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Which of the following is NOT an example of a chemical reaction

Charra [1.4K]

D water evaporating it is a physical change

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3 years ago

Which of the following is an example of an energy transformation?

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Answer:

Explanation:

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3 years ago

If 6.4 miles of Fe react with excess O2, how many miles of Fe2O3 can be formed? 4 Fe + 3 O2 -> 2 Fe2O3

Yuri [45]

I'm assuming that by "miles" you mean moles.

If O2 is the excess reactant, that means Fe is the limiting reactant. That means that the amount of product being formed depends on the amount of Fe reactant present. To calculate the moles of Fe2O3 formed, start with the given 6.4 moles of Fe and use the mole to mole ratio given by the reaction as shown below:

6.4 mol Fe x $\frac{2 mol Fe2O3}{4 mol Fe}$ = 3.2 mol Fe2O3

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3 years ago

What is the process in which an unstable atomic nucleus emits charged particles or energy or both?

alexdok [17]

Answer:

Option (A)

Explanation:

Radioactivity is defined as a process in which an unstable atomic nucleus decays continuously and after a specific period of time changes into a much more stable element. During this time of decay, the nucleus emits charged particles (energy) which are known as the α, β and γ particles. These are often emitted in the form of electromagnetic energy and are very dangerous to health.

The radioactive elements decay at a certain rate which is commonly known as the half-life. Half-life is basically defined as the time required by a radioactive substance to decay half of its initial composition.

Thus, the correct answer is option (A).

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3 years ago

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Alexus [3.1K]

Answer:

2 Na + 1 Cl2 -> 2 NaCl

Explanation:

The answer is really simple, because if you have 1 nonmetal element that has a subscript of 2, you need to multiply the product and the first reactant by 2 to balance it.

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