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MAXImum [283]
3 years ago
14

Movement of electrons about a central nucleus is a concept by whom?

Chemistry
2 answers:
Burka [1]3 years ago
7 0

Answer:

Bohr.

Explanation:

In 1913, N.Bohr proposed an atomic model for atom. He proposed that in an atom there is a central nucleus and electrons move around this center in a fixed path known as shell.

The shells or path have a fixed size and energy. The electrons do not lose energy during this movement.

There is possibility of energy change (emit or absorb) in an electron if they move from one shell to another.

Alenkasestr [34]3 years ago
5 0
The answer is bohr hope this helps :)
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2SO3(g)⟶2S(s)+3O2(g)ΔH=+790kJ. How many kilojoules are required when 2.1 moles of SO3 reacts?
guapka [62]

<u>Given:</u>

Enthalpy change (ΔH) for SO3 decomposition = +790 kJ

Moles of SO3 = 2.1 moles

<u>To determine:</u>

Energy required when 2.1 moles of SO3 reacts

<u>Explanation:</u>

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Energy required when 2 moles of SO3 reacts is 790 kJ

Thus, for 2.1 moles of SO3 the energy requirement would be

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Ans: 830 kJ are required when 2.1 moles of SO3 reacts.

4 0
2 years ago
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What is the critical temperature at which hydrogen can begin to fuse into helium in the core?
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