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Phoenix [80]
3 years ago
9

How to name the compounds in chemistry using roman numerals khan academy?

Chemistry
1 answer:
andrezito [222]3 years ago
7 0
What are the answer choices?

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Which of the following explains the importance of the activation energy acting as a barrier for reactants? A:It prevents most re
natita [175]
A: It prevents most reactions from occurring spontaneously.

The answer above is correct.
7 0
3 years ago
Read 2 more answers
During a strenuous soccer game, a student is sweating a lot. Which of these would help her maintain her water balance?
amm1812

Answer:

A

Explanation:

because your body needs to have an intake in the volume of liquids, and when you sweat it secretes the water from your body

5 0
3 years ago
A substance that cannot be broken down into other substances by ordinary chemical procedures is an
Hatshy [7]
An ELEMENT is a substance that cannot be broken down into other substances by ordinary chemical procedures.  Some easy examples would be:  <span>gold, iron, carbon, </span>hydrogen<span>, </span>oxygen<span>, nitrogen.</span> 
5 0
3 years ago
How are the graphs of the sine function and the cosine function different?
Zielflug [23.3K]
They are different by a phase shift of pi/2
3 0
3 years ago
Escribe la configuración electrónica de los elementos que poseen, ¿de qué elementos se trata?: 15 electrones 27 electrones 56 el
allsm [11]

Answer:

15 electrones: 1S²2S²2P⁶3S²3P³. Fósforo

27 electrones: 1S²2S²2P⁶3S²3P⁶4S²3d⁷ - Cobalto.

56 electrones: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s² - Bario

49 electrones: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p¹ - Indio

Explanation:

Para llenar los orbitales electrónicos de los distintos átomos debemos hacer uso de la regla de llenado electrónico de Aufbau. Por ejemplo, para el átomo con 15 electrones, la configuración electrónica es:

1S²2S²2P⁶3S²3P³. 2+2+6+2+3 = 15 electrones

Si elemento es neutro, tiene 15 protones. Es decir, es el fósforo, P.

27 electrones:

1S²2S²2P⁶3S²3P⁶4S²3d⁷ - Cobalto.

56 electrones:

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s² - Bario

49 electrones:

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p¹ - Indio

5 0
3 years ago
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