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3 years ago

What happens to the temperature, density, and pressure when you descend from the crust to the inner core

Chemistry

2 answers:

Mrrafil [7]3 years ago

8 0

It gets warmer more pressure

Ivenika [448]3 years ago

8 0

Both the temperature and the pressure increase as you get closer to the core

The density of each layer of earth also increases as you get closer to the core

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Choose the compound below that should have the highest melting point according to the ionic bonding model. A) AlN B) MgO C) NaF

iren2701 [21]

Answer:

The correct answer is C.

Explanation:

The compound with the highest melting point according to the ion bond model is the one with the greatest electronegativity difference, since the ion bond is stronger and therefore more difficult to break.

The electronegativity difference is calculated as the electronegativity difference of the atoms of the molecule.

AlN: Al (1,61) and N (3,04) so the difference gives 1,43.

MgO: Mg (1,31) and O (3,44) so the difference gives 2,13.

NaF: Na (0,93) and F (3,98) so the difference gives 3,05.

CaS: Ca (1) and S (2,58) so the difference is 1,58.

RbI: Rb (0.82) and I (2.66) so the difference is 1.84.

Analyzing the different cases, we can conclude that the molecule that presents the greatest difference in electronegativity is NaF, so it will have a higher boiling point due to the attraction force between its atoms.

Have a nice day!

5 0

3 years ago

Read 2 more answers

What do scientists use to increase the surface area of a solute

marta [7]

use a mortar & pestle to grind the solute into smaller particles, thus increasing the surface area.

6 0

4 years ago

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Oxygen gas is at a temperature of 40 Celsius when it occupies a volume of 2.3 L. To what temperature should it be raised to occu

Scrat [10]

Answer:

The temperature should be 885K.

Explanation:

In this case we use Charles's Law according to which the volume and temperature of a certain amount of gas are related, keeping the pressure constant. We convert the unit of temperature from Celsius to Kelvin: 0 = 273K -> 40 ° C = 40 + 273 = 313K

V1 / T1 = V2 / T2

2,3L/313K= 6,5L/T2

T2=6,5L/(2,3L/313K)=884, 56K

7 0

3 years ago

How many electrons are there in second principal energy<br> level(n=2) of a phosphorus atom?

salantis [7]

Answer:

8 electrons

Explanation:

Phosphorous is the element of group 15 and third period. The atomic number of chlorine is 15 and the symbol of the element is P.

The electronic configuration of the element phosphorus is:-

$1s^22s^22p^63s^23p^3$

Thus, from the electronic configuration shown above,

In n = 2, the total number of electrons are 8 which are present in $2s^22p^6$

6 0

4 years ago

Which is untrue about covalent compounds?

scoundrel [369]

The untrue statement is that they high melting points.

The covalent compounds are the compounds exhibiting strong intra-molecular bonds. This is due to the tightness of the atoms within the covalent molecules. The force of attraction between the individual molecules in a covalent compound seems to be weak. The covalent compounds exhibit weak intermolecular forces that hold the atoms together due to this they have a low melting point.

3 0

3 years ago

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