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anyanavicka [17]
3 years ago
15

Explain the process of radioactive decay. What happens during the radioactive decay? What is the result at the end of radioactiv

e decay?
Chemistry
2 answers:
nignag [31]3 years ago
7 0

1) Radioactive decay is the spontaneous decomposition of the unstable nucleus of an atom.

2) The emission of a particle or a photon.

For example, alpha decay is radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus).

3) The result is usually more stable element with smaller atomic number.

For example, in alpha decay atom transforms into an atom with an atomic number that is reduced by two and mass number that is reduced by four.

For example nuclear fission is radioactive decay process in which the nucleus of an atom splits into smaller parts and huge amount of energy is released.

LUCKY_DIMON [66]3 years ago
7 0

Answer:

Here's what they put

Explanation:

Sample Response: Radioactive decay is the process in which the nucleus of an unstable isotope spontaneously changes, releasing particles and energy. An unstable isotope will continue to decay until it reaches the stable form of either a different isotope of the same element that is stable or a different element that is stable.

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goldenfox [79]

Answer:

Observation

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Explanation:

5 0
3 years ago
Read 2 more answers
Calculate the density of sulfuric acid from the information that 35.4 mL of the acid masses 65.14 g.
vladimir1956 [14]

Answer:

<h3>The answer is 1.84 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question we have

density =  \frac{65.14}{35.4}  \\  = 1.840112994...

We have the final answer as

<h3>1.84 g/mL</h3>

Hope this helps you

3 0
3 years ago
Which transformation of energy occurs in a hydroelectric power plant?
Ber [7]
The answer for this question is D.
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Calculate the amount of heat, in kilojoules, required to turn solid ammonia at -78 degrees Celsius to gaseous ammonia at standar
zhuklara [117]

Answer:

132

Explanation:

3 0
3 years ago
Which electron configuration represents the electrons of an atom in an excited state? * 2-3 2-7-1 2-8 2-8-1​
Lemur [1.5K]

2-7-1

<h3>Further explanation </h3>

Electrons can move the shell up or down by releasing energy or absorbing energy  

Excited electrons show higher electron transfer to the shell by absorbing energy  

So it can be concluded that there are 2 conditions:  

Ground state is the state of electrons filling shell with the lowest energy levels.  

Excited state is the state of electrons which occupies a higher energy level  

The state of excited electrons can be seen from the presence of electrons which do not fill the skin completely but fill the skin afterward  

2-7-1

From its 8 electron configuration, filling 3 shells, 2 electrons in the firs shell, 7 electrons in the second shell and 1 electron in the third shell

the electrons in the third shell should fill the electrons in the second shell first according to Aufbau rule (lower energy shells)

\tt  1s^22s^22p^4\rightarrow ground~state\\\\1s^22s^22p^33s^1\rightarrow excited~state

8 0
3 years ago
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