What does chemical reaction describe

1 answer:

3 0

A chemical reaction (signs)

- rusting
- change in base of chemical
- for example lets say u mix two chemicals, and then it becomes a different new chemical (it changed from the inside)

a physical

- a physical reaction is outer looks not inside.
- it changes on the outside, like changing a color

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Which diagram shows electrons violating the Pauli exclusion principle?

Neporo4naja [7]

Correct Answer: Option C

Reason:
<span>The </span>Pauli Exclusion Principle<span> states as '<em>in an atom or molecule, no two electrons can have the same four electronic quantum numbers. Further, an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.</em>'
</span>
Thus, it can be seen that in option C, electrons in last 2 subshell have electrons with same spin, which is a violation of Pauli Exclusion Principle .

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3 years ago

The main difference between strong electrolytes and weak electrolytes is....

Bogdan [553]

Definitely their jawline… just kidding, it’s how much they dissociate

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Boron has two isotopes, Boron 10 which has a mass of 10.0129 amu and Boron-11 with a mass of 11.0093 amu. B-10 occurs 84.74% of

podryga [215]

The average atomic mass of Boron: 10.431 amu

<h3>Further explanation </h3>

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.

So Isotopes are elements that have the same Atomic Number (Proton)

Atomic mass is the average atomic mass of all its isotopes

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu

Mass atom X = mass isotope 1 . % + mass isotope 2.% + ...

The average atomic mass of boron :

$\tt avg~mass=0.8474\times 10.0129+0.1526\times 11.0093\\\\avg~mass=10.431~amu$

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2 years ago

Heating of glass until it melts what change is it

Natasha2012 [34]

Answer:

physcial change

Explanation:

As it has visible changes on shape and size

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