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svetlana [45]
3 years ago
11

The Bohr model of an atom shows a nucleus with electrons circling around it. What does the Bohr model show that makes it a usefu

l model for understanding atoms?
Chemistry
1 answer:
Vlad [161]3 years ago
5 0
Bohr model of an atom illustrates a nucleus with electrons circling around it. This is a useful model for understanding atoms because this clarified that atoms are actually composed of three particles: protons, neutrons and electrons. The first two are located at the center part of an atom (nucleus), while electrons are located at the outer part. Valence electrons of an atom are also vital in the creation of different chemical compounds.
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<u>Given:</u>

Initial amount of carbon, A₀ = 16 g

Decay model = 16exp(-0.000121t)

t = 90769076 years

<u>To determine:</u>

the amount of C-14 after 90769076 years

<u>Explanation:</u>

The radioactive decay model can be expressed as:

A = A₀exp(-kt)

where A = concentration of the radioactive species after time t

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Based on the given data :

A = 16 * exp(-0.000121*90769076) = 16(0) = 0

Ans: Based on the decay model there will be no C-14 left after 90769076 years

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3 years ago
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All chemical reactions have a conversation of mass and energy. 

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Answer: 10 uses

Explanation:

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2] Chlorine is used for purifying water.

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5] Graphite is used as a good conductor of electricity.

6] Pottassium is used in fertilizers.

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Answer:

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Answer:

[Ar] 3d10 4s2 4p3 is shorthand, 1s22s22p63s23p63d104s24p3 long hang

Explanation:

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