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KonstantinChe [14]

4 years ago

5

Why is the atomic theory a scientific one

1 answer:

elixir [45]4 years ago

5 0

Hope this helps some

"In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. ... In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all."

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An electron confined in a one-dimensional box is observed, at different times, to have energies of 12 eV, 27 eV, and 48 eV. What

Fynjy0 [20]

Answer:

$l=3.5*10^{-10}m$

Explanation:

From the question we are told that:

1st Energy $E_1=12eV=4(3eV)$

2nd Energy $E_2=27eV=9(3eV)$

3rd Energy $E_3=48eV=16(3eV)$

Generally the equation for Energy E for electron in one dimensional box at ground state $E_0$ is mathematically given by

$E_0=\frac{h}{8ml^2}$

$E_0=\frac{h}{8ml^2}$

Therefore Length a is mathematically given as

$l=\sqrt{\frac{h^2}{8mE_0} }$

$l=\sqrt{\frac{(6.625*10^{-34})^2}{8(9.1*19^{-31}{(3eV(1.6*10^{-19}))}}$

$l=3.5*10^{-10}m$

8 0

3 years ago

The critical pressure of carbon dioxide is 72.7 atm. What is this value in units of pascals?

Blizzard [7]

Answer: 7366.328 kPa
explanation: the critical pressure of carbon dioxide is 72.7 atm.

8 0

4 years ago

Which of the following is a property of a pure substance?

wolverine [178]

D.) the original components retain their individual properties

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3 years ago

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which term refers to substances that cannot be broken down physically or chemically? a.mixtures b.molecules c.alloy d.atoms

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The answer is D) Atoms :)

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Does the shape of molecule matter?

Lelechka [254]

Yes because it helps determine the properties the molecule has.

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