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3 years ago

Cuál es la característica principal para que un elemento sea radiactivo?

1 answer:

3 0

Definimos la radiactividad como el proceso mediante el cual un núcleo inestable pierde energia mediante emisiones (puede emitir fotones, neutrones, etc.)

Así, la característica princpial es que el elemento debe ser inestable.

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Cuando tenemos un elemento inestable, lo que puede deberse a que el elemento tiene un núcleo muy grande, o a que el elemento por alguna razón tiene muchos neutrones, este elemento querrá de alguna manera volver a un estado más estable.

Usualmente, la inestabilidad se ve representada como un dado exceso de energía, entonces la forma en la que el átomo se estabiliza es liberando energía de alguna forma.

Esta energía puede ser liberada mediante una desintegración, donde el elemento original se convierte en otros elementos y en el proceso se liberan nucleones, o por emisiones de fotones característicos del elemento, o de otras diversas formas que dependerán del caso particular.

Concluyendo la idea, para que un elemento sea radiactivo (es decir, emite radiación) la característica que este elemento debe tener es que debe ser inestable.

Sí quieres aprender más, puedes leer.

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How many chlorine (CI) atoms are in Methylene?

Aleks04 [339]

Answer:

None

Explanation:

Methylene is an organic compound and organic compounds consist of hydrogen atoms and Carbon atoms in n this case Methylene(CH2) has one carbon and two hydrogens .

6 0

3 years ago

Read 2 more answers

What volume (mL) of the partially neutralized stomach acid was neutralized by NaOH during the titration? (portion of 25.00 mL sa

almond37 [142]

The question is incomplete, here is the complete question:

What volume (mL) of the partially neutralized stomach acid having concentration 2 M was neutralized by 0.1 M NaOH during the titration? (portion of 25.00 mL NaOH sample was used; this was the HCl remaining after the antacid tablet did it's job)

<u>Answer:</u> The volume of HCl neutralized is 1.25 mL

<u>Explanation:</u>

To calculate the volume of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of stomach acid which is HCl

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=1\\M_1=2M\\V_1=?mL\\n_2=1\\M_2=0.1M\\V_2=25mL$

Putting values in above equation, we get:

$1\times 2\times V_1=1\times 0.1\times 25\\\\V_1=\frac{1\times 0.1\times 25}{1\times 2}=1.25mL$

Hence, the volume of HCl neutralized is 1.25 mL

3 0

3 years ago

Help for brainlist and extra points!!

Ratling [72]

Answer:

Explanation:

7 0

3 years ago

He balanced equation for the reaction of acetylene, c2h2, and oxygen in an acetylene torch is 2 c2h2 + 5 o2 → 4 co2 + 2 h2o. in

pickupchik [31]

Answer: 0.4 g

Explanation:

1) Balanced chemical equation:

2) 2C2H2 + 5 O2 → 4CO2 + 2 H2O

3) mole ratios:

2 mol C2h2 : 5 mol O2

4) Convert 0.13 g C2H2 into number of moles

n = mass in grams / molar mass

molar mass C2H2 = 2 *12g/mol + 2*1 g/mol = 26 g/mol

n = 0.13 g / 26 g/mol = 0.005 mol

5) Set the proportion with the unknown

5 mol O2 x
----------------- = ---------------
2 mol C2H2 0.005 mol C2H2

x = 0.005 mol C2H2 * 5 mol O2 / 2 mol C2H2 = 0.0125 mol O2

6) Convert 0.0125 mol O2 to grams

mass = number of moles * molar mass

molar mass of O2 = 32 g/mol

mass = 0.0125 mol * 32 g/mol = 0.4 g

Answer: 0.4 g

8 0

3 years ago

Please help due today!

Sav [38]

Answer:

It's the first answer choice for sulfur and the second answer choice for magnesium I believe

4 0

3 years ago