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3 years ago

Two protons and two neutrons are released as a result of this reaction.

Chemistry

2 answers:

Ierofanga [76]3 years ago

6 0

Answer:

The answer is A

Explanation:

Murljashka [212]3 years ago

3 0

Answer: The particle released in the given reaction is one alpha particle

Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same.

For the given fission reaction:

$^{222}_{86}\textrm{Rn}\rightarrow ^A_Z\textrm{X}+^{218}_{84}\textrm{Po}$

To calculate A:

Total mass on reactant side = total mass on product side

222 = A + 218

A = 4

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

86 = Z + 84

Z = 2

The isotopic symbol of unknown element is $_{2}^{4}\textrm{He}$ . Another name of helium atom is alpha particle.

Hence, the particle released in the given reaction is one alpha particle

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What is the systematic name of the following compound? Li2S

Nuetrik [128]

Answer:

the systematic name is called Lithium sulfide.

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3 years ago

A(n) _____ is equivalent to an electron. gamma ray omega particle alpha particle beta particle

ladessa [460]

Answer:

beta particle

Explanation:

Alpha beta and gamma radiations are the examples of ionizing radiations. When an atom is an excited state and having high energy, the atom is in unstable state. The excess of energy is released by the atom to get the stability. The released energy is in the form of radiations which may include alpha, beta, gamma, X-ray etc.

¹⁴₆C → ¹⁴₇N + ⁰₋₁e

The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.

Beta radiations:

Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.

The mass of beta particle is smaller than the alpha particles.

They can travel in air in few meter distance.

These radiations can penetrate into the human skin.

The sheet of aluminium is used to block the beta radiations

3 0

3 years ago

Calculate the average molar bond enthalpy of the carbon-hydrogen bond in a ch4 molecule.

balandron [24]

The average molar bond enthalpy of the carbon-hydrogen bond in a CH4 molecule is 416 KJ/mol. (+716.7 + (4 x 218) - (- 74.6) ) / 4 = + 1663.3 / 4 = 416

7 0

2 years ago

Read 2 more answers

If air is contaminated with unwanted substances, it is said to be polluted. Which of these places would most likely to have poll

lianna [129]

Answer:

Forest. Because as u saw last year with the Australian forest fire it was bad.

5 0

2 years ago

I NEED HELP PLEASE, THANKS! :)

Leto [7]

Answer:

Here's what I get

Explanation:

i. E = mc²

E = energy

m = mass

c = the speed of light

"Energy equals mass times the square of the speed of light.”

The equation says that energy and mass are interchangeable. If you multiply the mass of an object by c², you get its equivalent and of energy.

The SI base units for energy are kg·m²s⁻².

The most common derived unit is the joule (J). Others are the newton-metre (N·m), kilowatt-hour (kWh), watt-second (W·s), and volt-coulomb (V·C).

ii. Nuclear vs chemical reactions

a. Alpha decay

$\rm _{92}^{238}\text{U} \longrightarrow \, _{2}^{4}\text{He} + \, _{90}^{234}\text{Th}$

A nuclear reaction — like α decay — takes place in the nucleus of an atom.

An element becomes a different element.

b. Chemical reaction

Na· + ·Cl ⟶ Na⁺ + Cl⁻

A chemical reaction — like the formation of NaCl — involves rearranging the electrons, which are outside the nucleus.

The elements do not change.

Salt still consists of sodium and chlorine.

8 0

3 years ago