# What two factors determine a molecule is polar or not

2 months ago

## Solution 1

Guest #6876767
2 months ago
The two factors that determine whether or not a molecule is polar are if the individual bonds are even and the shape of the molecule. If the molecule is perfectly symmetric, the molecule will not be polar even if there are polar bonds present.

## 📚 Related Questions

Question
The chemical formula of propane is C3H8. Which number correctly uses scientific notation to represent the number of atoms in 2.00 moles of propane?
Solution 1
Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We do as follows:

2.00 mol C3H8 (
6.022 x 10^23 atoms / mole ) = 1.204x10^24 atoms C3H8
Solution 2

1.2046*10²⁴ atoms

Explanation:

Avogadro's Number or Avogadro's Constant to the number of particles that constitute a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023 * 10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without dimension or explicit unit of expression. The Avogadro number applies to any substance.

Then a rule of three applies as follows: if 1 mole has 6,023 * 10²³ atoms, 2 moles how many atoms will it contain?

number of atoms=1.2046*10²⁴ atoms

This number is already represented in scientific notation.

Question
Use the mole concept to calculate the number of atoms that are in a 1.75-mol sample of CHCl3.
Solution 1
This is how I got to that answer. Since we don't know how many atoms there are in a mole, we use the number 6.02 x 10^-23. Now, just plug in what you have in the equation:

1.75 moles ChCl3 x (6.02 x 10 ^-23) / 1 mole = 1.0535 x 10^-22 atoms.
Question
True or false It is very efficient to drive a large truck to and from school.
Solution 1
The answer is false, for sure.
Solution 2

false

Explanation:

think of all of the gas money you have to spend

Question
Two objects in contact are in thermal equilibrium if their particles possess the same average kinetic energy. TRUE FALSE
Solution 1

It's true

Explanation:

Thermal equilibrium is the state in which two bodies come into mechanical contact, equalize their temperatures, due to the irradiation of one towards the other until reaching an energy balance. The thermal equilibrium point is reached when the kinetic energy that is shared between two bodies is distributed throughout the system, in other words, both bodies start to function as a single thermodynamic system, with the same internal energy and temperature

Solution 2
Yes the two objects are in thermal equilibrium, True.
Question
What column on the periodic chart contains atoms with an ideal electron configuration?
Solution 1
What is the question?
Question
The phase change that occurs when the attraction between liquid particles becomes a significant factor and the particles bond together is: boiling freezing deposition melting
Solution 1
I believe the correct answer from the choices listed above is the second option. The phase change that occurs when the attraction between liquid particles becomes a significant factor and the particles bond together is freezing. It is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point.
Solution 2

Explanation:

It is known that in solids, particles are placed closer to each other due to strong forces of attraction between them. Due to this solids occupy a fixed shape an volume.

On the other hand, molecules of a liquid are held by less strong forces as compared to solids. Therefore, molecules of a liquid are able to slide past each other.

Hence, when in liquid phase particles bond together it it changes into solid phase.

Thus, we can conclude that the phase change that occurs when the attraction between liquid particles becomes a significant factor and the particles bond together is freezing.

Question
Which of these actions is an example of chemical weathering? A. Freezing water widens the cracks in rocks. B. Plant roots force their way into cracks in rocks and break them. C. Oxygen in air reacts with iron content in rocks, causing them to change color. D. Strong winds peel soft rock away, leaving harder rock behind.
Solution 1

Answer : Option C) Oxygen in air reacts with iron content in rocks, causing them to change colour.

Explanation : Chemical weathering is a process in which the disintegration of any materials takes place due to chemical reactions mainly with water and substances dissolved in it rather than by any mechanical processes.

Here, in the given options namely;

A) Freezing water widens the cracks in rocks is a physical process where the water clogged inside the cracks of rocks gets expanded on freezing at lower temperatures. No chemical change is observed in this process.

B) Plant roots force their way into cracks in rocks and break them this is also a physical process where the plant roots search for water and nutrients into the crack of rocks and eventually breaks them. Here, no chemical changes are seen.

C) Oxygen in air reacts with iron content in rocks, causing them to change color this is completely a chemical change that is occurring; as we can see that the color of rocks are changing because of a chemical reaction of oxygen in the air and the iron content in the rocks. There is also disintegration of rock which is observed in this process. So, this can be termed as chemical weathering.

D) Strong winds peel soft rock away, leaving harder rock behind it is completely a physical process where the strong winds physically peel away the soft rock and leaves behind harder rocks. No chemical change is seen or occurs.

Hence, the correct answer is Option C) which gives complete satisfactory changes to be termed as chemical weathering.

Solution 2
Chemical weather is when oxygen in air reacts with iron content in rocks, causing them to change color. The other choices are examples of physical weathering. Chemical weathering happens when there is a change of state due to chemicals causing rocks to weather or erode.
Question
what is the percent composition of NiO if a sample of NiO with a mass of 41.9grams contains 33.1 g Ni and 8.8 O
Solution 1

Percent composition can be solve by:

( mass desired component)/ mass sample * 100

% Nitrogen of the sample NiO can be solved:

%Ni = ( 33.1 g Ni / 41.9 g NiO) x 100

%Ni = 79% Ni

% oxgen:

%O = ( 8.8 g O / 41.9 g NiO) x 100

%O = 21 % O

Solution 2

ni is 79% and o is 21%

Question
Tear gas products are less effective against violent attackers. true or false
Solution 1
False because tear gas is used in riots
Question
How are inner and outer planet differt?
Solution 1
The outer planets are further away, larger and made up mostly gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth, and Mars. After an asteroid belt comes the outer planets, Jupiter, Saturn, Uranus, and Neptune.

2647929
842281
748681
586256
406852
368373
348603
324927
199835
130075
112100
106146
77164
23213
22589
19607
17108
13966
10987
3389

3423409
2092250
1518097