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Vitek1552 [10]
3 years ago
6

The model of the atom evolved over time as scientific investigations uncovered new properties and observations about the atom. D

escribe the function of a model in scientific investigations.

Chemistry
1 answer:
wariber [46]3 years ago
4 0
Atomic physics is the field of physics that <span>studies atoms.
</span>In 1913, Niels Bohr made a theory for the hydrogen atom based on quantum theory which states<span> that energy can only be transferred in certain quantities. Electrons move around the nucleus but only in fixed orbits. When an atom jumps from one orbit to another with lower energy level, a light quantum is emitted as a result.</span>

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What are the two elements that are liquids at freezing?
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3 years ago
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Oxygen used in respiratory therapy is stored at room temperature under a pressure of 150 atm in a gas cylinder with a volume of
Komok [63]
<h3>Answer:</h3>

9,729.73 L

<h3>Explanation:</h3>
  • Based on Boyle's law when temperature is held constant then the volume of a fixed mass of a gas, V is inversely proportional to Pressure, P.
  • That is; Pα 1/V
  • Mathematically, P= k/V where k is a constant
  • Therefore, when the volume of a gas and the pressure are altered,
  • P1V1=P2V2 = k, where P1 and P2 are the initial and final pressure respectively while V1 and V2 are the initial and final pressure respectively.

In this case;

Initial Pressure, P1 = 150 atm

Initial volume, V1 = 60.0 L

Final pressure, P2 = 0.925 atm

we are required to calculate the final volume

But, P1V1 =P2V2

Rearranging the formula, V2 = P1V1 ÷ P2

Thus;

V2 =(150 atm × 60.0 L) ÷ 0.925 atm

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The new volume will be 9,729.73 L

3 0
3 years ago
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