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bulgar [2K]
3 years ago
9

You and everything around you are made up of matter. What is matter made up of?

Chemistry
2 answers:
tatyana61 [14]3 years ago
6 0

a. Atoms and molecules

aivan3 [116]3 years ago
3 0
A: Atoms and molecules is the correct answer.
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2 years ago
Explain why we use 1/12 in finding atomic mass unit ?​
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The u (amu is the old unit name) is 1/12 of the weight of an 12C atom. The way the u is chosen ensures that all core and atom masses are multiples of 1(±0.1) u.

Explanation:

Further explanation if needed...

Carbon 12 was chosen because the chemical atomic weights based on C12 are almost identical to the chemical atomic weights based on the natural mix of oxygen. Simply because the atomic mass is defined as 1/12 of the mass of 12C. Others isotopes of carbon (13C mostly, with an abundance of 1.1% approximately) account for an average atomic mass slightly above 12.

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2 years ago
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Which of the following is true concerning ψ²? A) ψ² describes the probability of finding an electron in space. B) ψ² describes t
Ilia_Sergeevich [38]

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The Austrian physicist Erwin Schrödinger formulated an equation that describes the behavior and energies of submicroscopic particles in general.

The Schrödinger equation i<u>ncorporates both particle behavior</u>, in terms of <u>mass m</u>, and wave behavior, in terms of a <u><em>wave function ψ</em></u>, which depends on the location in space of the system (such as an electron in an atom).

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3 years ago
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