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xxTIMURxx [149]
3 years ago
6

How did earth come to be spherical

Chemistry
1 answer:
Alex3 years ago
8 0
Gravity. An increase in mass corresponds to an increase in gravity so as asteroids and space Debris kept colliding to make earth the mass increased which increased gravity which pulls everything in from every direction resulting in a spherical shape
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What is the ranking order of the degree of polarity? Of HF,HCI,HBr and HI
Savatey [412]

Answer:

The ranking order of the degree of polarity is HF>HCl>HBr>HI

Explanation:

The degree of polarity of a compound depends on the nature electronegative atom that it contains.

      Among Fluorine,chlorine,bromine and iodine the electronegativity of fluorine is highest among all the mentioned atoms.

     Due to high electronegativity HF is the most polar than HCl,HBr and HI and the HI have least polarity as its atomic structure is large and electronegativity is lower than fluorine,chlorine and bromine.

7 0
4 years ago
How does the density of solid water compare to the density of liquid water
jenyasd209 [6]

The ice structure takes up more volume than the liquid water molecules, hence ice is less dense than liquid water. What is the exact change in volume of the water when it freezes as ice? Example: Calculate the volume in a 100 g ice cube with a density of 0.92 g per mL.

4 0
3 years ago
Read 2 more answers
Which of the following is an accurate statement
Yanka [14]
What are the statements?
8 0
3 years ago
HELPPPPPPPPPP. PLZZZZ
balandron [24]

i need help on myn to

its the 2nd tide i think

5 0
3 years ago
If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the struct
Sauron [17]

Answer:

Electron geometry- Tetrahedral

Molecular geometry- Bent

Bond angle- <<109.5°

Explanation:

According to the Valence Shell Electron Pair Repulsion (VSEPR) Theory, the shape of a molecule depends on the number of electron pairs present bon the central atom of the molecule. The electron pairs orient themselves as far apart in space as possible to minimize repulsion between electron pairs.

However, the repulsion between all electron pairs is not the same. Lone pairs cause more repulsion around the central atom than bond pairs. Hence lone pairs tend to distort the molecular structure away from that predicted on the basis of Valence Shell Electron Pair Repulsion Theory.

Considering XY2Z2, there are four electron domains, two bond pairs with bonding groups at 180° apart and two lone pairs. Based on VSEPR theory, a tetrahedral shape is expected with a bond angle of about 109°.

The presence of two lone pairs distorts the observed molecular geometry to a bent shape with bond angle <<109°, hence the answer above.

4 0
4 years ago
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