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sveta [45]
3 years ago
15

What are the properties of elements??​

Chemistry
2 answers:
umka21 [38]3 years ago
8 0

Answer:

Atomic number. The atomic number indicates the number of protons within the core of an atom. ...

. Atomic mass. The name indicates the mass of an atom, expressed in atomic mass units (amu). ...

. Electronegativity according to Pauling. ...

. Density. ...

. Melting point. ...

. Boiling point. ...

. Vanderwaals radius. ...

. Ionic radius.

8090 [49]3 years ago
7 0

Answer:

Chemical properties

Atomic number. The atomic number indicates the number of protons within the core of an atom.

Atomic mass. The name indicates the mass of an atom, expressed in atomic mass units (AMU).

Electronegativity according to Pauling.

Density.

Melting point.

Boiling point.

Vanderwaal's radius.

Ionic radius.

And many more.

Explanation:

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PH is 7.45. Calculate value of [H3O+] and [OH-]
lana66690 [7]

Answer:

The answer is (H30+) =3,55e-8M and (OH-)=2,82e-7M

Explanation:

We use the formulas:

pH= - log(H30+)  and Kwater=(H30+)x(OH-)

pH= - log(H30+)  ----< (H30+)= antilog- pH=antilog- 7,45=3,55E-8M

Kwater=(H30+)x(OH-)

(OH-)=Kwater/(H30+)= 1,00e-14/3,55e-8 = 2,82e-7

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