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Paladinen [302]
2 years ago
10

What is an atomic mass unti

Chemistry
2 answers:
IgorLugansk [536]2 years ago
5 0

Answer:

Atomic Mass Unit is also called Dalton. It is used to express atomic and molecular weight. It is defined as 1/12 of the mass of an unbound neutral atom of carbon.

Vlada [557]2 years ago
3 0

Explanation:

a unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon-12.

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Thomson's atomic model is best described by which of the following statements?

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3 years ago
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3 years ago
Consider a certain type of nucleus that has a half-life of 32 min. calculate the percent of original sample of nuclides remainin
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t1/2 = ln 2 / λ = 0.693 / λ
Where t1/2 is the half life of the element and λ is decay constant.

32 = 0.693 / λ 
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Nt = Nο eΛ(-λt)          (2)

Where Nt is atoms at t time, λ is decay constant and t is the time taken.
t = 1.9 hours = 1.9 x 60 min

From (1) and (2),


Nt = Nο e⁻Λ(0.693/32)*1.9*60
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