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Natasha_Volkova [10]

3 years ago

6

List two general properties of molecular compounds

1 answer:

Katen [24]3 years ago

5 0

Low melting points and boiling points. ...Low enthalpies of fusion and vaporization These properties are usually one or two orders of magnitude smaller than they are for ionic compounds.Soft or brittle solid forms. ...Poor electrical and thermal conductivity.

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svet-max [94.6K]

Explanation:

(1) The nucleus is positive and the electron cloud is positive.

(2) The nucleus is positive and the electron cloud is negative.

(3) The nucleus is negative and the electron cloud is positive.

(4) The nucleus is negative and the electron cloud is negative

4 0

3 years ago

Which product has a bitter taste, is slippery when mixed with water, and can damage skin and eyes?

beks73 [17]

Answer:

sodium hydroxide

Explanation:

its a base and it can damage skin

7 0

3 years ago

Read 2 more answers

Describe the pattern of the lewis dot structure of the first 18 elements

posledela

Explanation: Lewis dot structures are the structures which represent the valence electrons of an atom. The dots in the structure are considered as the valence electrons.

First 18 elements of the periodic table are Hydrogen(H), Helium (He), Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Neon(Ne), Sodium (Na), Magnesium (Mg), Aluminium (Al), Silicon (Si), Phosphorous (P), Sulfur (S), Chlorine (Cl) and Argon(Ar).

The valence electrons are the electrons which are present in the outermost shell of an atom. The electronic configuration of the elements are:

Hydrogen (H) = $1s^1$ ; Valence electrons = 1

Helium (He) = $1s^2$ ; Valence electrons = 2

Lithium (Li) = $1s^22s^1$ ; Valence electrons = 1

Beryllium (Be) = $1s^22s^2$ ; Valence electrons = 2

Boron (B) = $1s^22s^22p^1$ ; Valence electrons = 3

Carbon (C) = $1s^22s^22p^2$ ; Valence electrons = 4

Nitrogen (N) = $1s^22s^22p^3$ ; Valence electrons = 5

Oxygen (O) = $1s^22s^22p^4$ ; Valence electrons = 6

Fluorine (F) = $1s^22s^22p^5$ ; Valence electrons = 7

Neon (Ne) = $1s^22s^22p^6$ ; Valence electrons = 8

Sodium (Na) = $1s^22s^22p^63s^1$ ; Valence electrons = 1

Magnesium (Mg) = $1s^22s^22p^63s^2$ ; Valence electrons = 2

Aluminium (Al) = $1s^22s^22p^63s^23p^1$ ; Valence electrons = 3

Silicon (Si) = $1s^22s^22p^63s^23p^2$ ; Valence electrons = 4

Phosphorous (P) = $1s^22s^22p^63s^23p^3$ ; Valence electrons = 5

Sulfur (S) = $1s^22s^22p^63s^23p^4$ ; Valence electrons = 6

Chlorine(Cl) = $1s^22s^22p^63s^23p^5$ ; Valence electrons = 7

Argon (Ar) = $1s^22s^22p^63s^23p^6$ ; Valence electrons = 8

Elements hydrogen and helium belong to period 1 of the period table, so the lewis dot structures will have maximum of 2 electrons

Elements from lithium to neon belong to period 2 and the lewis dot structures will have maximum of 8 electrons.

Elements from sodium and argon belong to the period 3 of the periodic table, and will have maximum of 8 electrons in their lewis dot structures.

Lewis dot structures are attached below.

6 0

3 years ago

Write the isotope notation for an element with 12 protons and 14 neutrons.

PtichkaEL [24]

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7 0

3 years ago

If a sample of CO gas at 1.977 atm has a volume of 517.4 mL and the pressure is changed to

Mekhanik [1.2K]

Answer:

The answer to your question is V2 = 333.9 ml

Explanation:

Data

Pressure 1 = P1 = 1.977 atm

Volume 1 = V1 = 517.4 ml

Pressure 2 = P2 = 3.063 atm

Volume 2 = V2 = ?

Process

To solve this problem use Boyle's law

P1V1 = P2V2

-Solve for V2

V2 = P1V1/P2

-Substitution

V2 = (1.977 x 517.4) / 3.063

-Simplification

V2 = 1022.9 / 3.063

-Result

V2 = 333.9 ml

3 0

3 years ago