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snow_tiger [21]
3 years ago
6

The person to introduce the idea of an "atom" was _____.

Chemistry
2 answers:
Alexus [3.1K]3 years ago
8 0

Answer:

The correct answer is Democritus.

Explanation:

Democritus, a Greek philosopher, and scientist in 440 B. C. proposed the theory of the atom. Democritus made his theory of atoms depend on the work of previous philosophers according to different scientists.

His explanation of the atom begins a stone cut in half gives two halves. If stone again and again continuously cut, at some point the stone becomes so small that it could no longer be cut, that atoms present separately from each other.

Thus, the correct answer is Democritus.

nadezda [96]3 years ago
5 0
The answer is Democritus.  He first started to propose the idea in the 5th century B.C. 
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Composition of the mixture:

x_{A} =0.652=65.2 %

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If the ideal solution model is assumed, and the vapor phase is modeled as an ideal gas, the vapor pressure of a binary mixture with x_{A} and x_{B} molar fractions can be calculated as:

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0.60*760=P_{vap}=x_{A}P_{A}+x_{B}P_{B}\\456=x_{A}P_{A}+(1-x_{A})P_{B}\\456=x_{A}*(P_{A}-P_{B})+P_{B}\\\frac{456-P_{B}}{P_{A}-P_{B}}=x_{A}\\\\\frac{456-250}{566-250}=x_{A}=0.652

With the same assumptions, the vapor mixture may obey to the equation:

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The fractions of B can be calculated according to the fact that the sum of the molar fractions is equal to 1.

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