Arrange the following AFn species in order of increasing F¬A¬F bond angles: BF₃, BeF₂, CF₄, NF₃, OF₂.

According to the molecular geometry, the VSEPR theory allows us to determine the shape of a molecule.

Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the framework of  molecule.It includes parameters like bond length,bond angle and torsional angles.

It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.

Learn more about molecular geometry,here:

https://brainly.com/question/7558603

#SPJ1

When a combustion reaction occurs, oxygen plays a part in the process, usually along with the production of a lot of heat and light. A combustion reaction takes place when oxygen is available.

Total combustion reaction, which generates energy, carbon dioxide, water molecules in a gaseous state, and other products, is one of the two types of this process. Hydrocarbons are frequently used to create energy in combustion reactions. When a combustion reaction occurs, oxygen plays a part in the process, usually along with the production of a lot of heat and light. From the food our bodies digest to the way the sunlight we receive is created, chemical processes occur all around us. Understanding physical and chemical changes is essential before beginning chemical processes.

Learn more about molecules here

https://brainly.com/question/19556990

#SPJ4

Answer:

B4

Explanation:

good day

The empitical formula shows the simplest ratio of elements in a compound (not the total number of atoms in the molecule).

So to find the empirical formula we need to calculate how many moles of each atom we have in this sample. Then we will see the ratio of each element.

We are given the mass, so to convert it to moles we use the molar mass. For this we go to the periodic table and see that the values for each element are:

Na (sodium): 22,99 g/mol

H (hydrogen): 1 g/mol

P (phosphorus): 25,81 g/mol

So we calculate the moles of each element as follows:

And as we see, for every 0.833 moles of Na we have the same number of moles of P, so the ratio of these elements in the molecule is 1 to 1.

As for the hydrogen:

So the ratio Na to H is 1 to 2.

Now we can write the empirical formula as follows=

Answer:

mol = 6.75

Explanation:

Remember the equation for Molarity:

Molarity = mol/liters

So,

1.5M = mol/4.5

not isolate mol by multiplying 4.5 by both sides, using algebra

mol = 6.75

a) Melting: An example of melting that occurs in our everyday life is when we heat butter on a stovetop.

b) Freezing: Freezing is the process in which a liquid transforms into a solid upon cooling.

c) Condensation: One example of condensation that we encounter regularly is when water droplets form on the surface of a cold drink on a hot day.

d) Evaporation: Evaporation is the process by which a liquid transforms into a gas or vapor.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state.

a) Melting:  Butter is a solid at room temperature, but when heat is applied, it melts into a liquid. This change is a result of the increase in temperature, which provides enough energy to overcome the intermolecular forces holding the butter molecules together.

b) Freezing:Eventually, the temperature reaches the freezing point of water (0°C or 32°F), at which the water molecules slow down and arrange themselves into a regular, crystalline structure. This transformation from a liquid to a solid state is accompanied by the release of heat energy.

c) Condensation: As the temperature decreases, the air's capacity to hold moisture decreases, causing the water vapor in the air to condense into liquid water droplets. This process occurs due to the transfer of heat energy from the warm air to the cold surface, leading to the saturation of the air and the conversion of water vapor into liquid form.

d) Evaporation:  As the sun's heat energy is absorbed by the water molecules on the clothes' surface, their kinetic energy increases, causing them to break free from the liquid phase and escape into the surrounding air as water vapor. This process occurs because the molecules at the liquid surface with sufficient energy can overcome the attractive forces within the liquid and enter the gas phase.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state. An example of sublimation is the process of dry ice (solid carbon dioxide) converting into carbon dioxide gas.

For more such questions on Freezing visit:

https://brainly.com/question/40140

#SPJ8

For each of the following ions, the neutral atom that has the same number of electrons: Cl- , Sc 3+, Fe 2+, Zn 2+, Sn 4+. are Cl, Sc, Fe, Zn, Sn

Some ions do not have a corresponding neutral atom that has the same electron configuration. The neutral atom that has the same number of electrons for Cl-, Sc3+, Fe2+, Zn2+, Sn4+ ions are:Cl-: A chlorine ion, with a negative charge (Cl-) has one more electron than its neutral counterpart, therefore, the neutral atom that has the same number of electrons is Cl. Sc3+: A scandium ion with a positive three charge (Sc3+) loses three electrons, herefore, the neutral atom that has the same number of electrons is Sc. Fe2+: An iron ion with a positive two charge (Fe2+) loses two electrons, therefore, the neutral atom that has the same number of electrons is Fe.

Zn2+: A zinc ion with a positive two charge (Zn2+) loses two electrons, therefore, the neutral atom that has the same number of electrons is Zn. Sn4+: A tin ion with a positive four charge (Sn4+) loses four electrons, therefore, the neutral atom that has the same number of electrons is Sn. In general, if an ion is positive, it means that it has lost electrons and it now has fewer electrons than its corresponding neutral atom. However, if an ion is negative, it means that it has gained electrons and it now has more electrons than its corresponding neutral atom.

Learn more about neutral atom at:

https://brainly.com/question/29546611

#SPJ11

Answer:

calcium chloride because that is the answer

Answer:

-a covalent bond.

Explanation:

Answer:

difference between metal and alloy is that the metal is a pure substance whereas the alloy is a mixture of two or more components.

Explanation:

Mostly the metalloids have the appearance just like the metallic appearance And also they are the brittle one's . Boron and silicon are the example. Note; By combining with other metals metalloid can form the alloy

Answer:

0.20 mol

Explanation:

Let's consider the reduction of iron from an aqueous solution of iron (II).

Fe²⁺ + 2 e⁻ ⇒ Fe

The molar mass of Fe is 55.85 g/mol. The moles corresponding to 5.6 g of Fe are:

5.6 g × 1 mol/55.85 g = 0.10 mol

2 moles of electrons are required to deposit 1 mole of Fe. The moles of electrons required to deposit 0.10 moles of Fe are

0.10 mol Fe × 2 mol e⁻/1 mol Fe = 0.20 mol e⁻

0.20 mol of electrons is required to deposit 5.6g of iron from a solution of iron (2) tetraoxosulphate(6)

 The reduction of iron from an aqueous solution of iron (II).

\(Fe^{+2} +2e^{-} \rightarrow Fe\)

The formula for number of moles is as follows:-

\(Number \ of \ moles=\frac{Mass}{Molar\ mass}\)

The molar mass of Fe is 55.85 g/mol. The moles corresponding to 5.6 g of Fe are:

\(5.6 g \times\frac{1\ mol}{55.85\ g} = 0.10 \ mol\)

2 moles of electrons are required to deposit 1 mole of Fe. The moles of electrons required to deposit 0.10 moles of Fe are:-

\(0.10 mol Fe\times\frac{2\ mol\ e^{-} }{1\ mol\ e^{-}} = 0.20 \ mol e^{-}\)

Hence, 0.20 mol of electrons is required to deposit 5.6g of iron.

To know more about:-

brainly.com/question/12513822

Answer:

2. nonmetals and metals

Explanation:

Most of the groups in the periodic table of the elements are vertical columns, also known as groups. These groups are numbered 1 through 18 and are typically labeled on the left-hand side of the periodic table. Elements within a group have similar chemical properties and characteristics. For example, group 1 is known as the alkali metals and includes elements like lithium, sodium, and potassium. Group 17 is known as the halogens and includes elements like fluorine, chlorine, and bromine. There are a few exceptions to this general pattern, such as the lanthanides and actinides, which are not typically included in the main body of the periodic table.

Answer:

the correct answer to your question is 20

Answer:

Pluto is farthest from the sun and hence it receives extremely low energy of sun. The surface temperature of Pluto is about -240 !!!

Answer:

Explanation:

The grass hopper feeds on the plants so the secondary consumer lacking its food source would decrease as the producer increases with not predator.

Answer: 1.09 Liers

Explanation:

I did the problem and got it correct.

Answer:

A. 1.09

Explanation:

I did the Chemistry Exam

Answer:

B.mass of the neutrons and protons

Explanation:

hope it's help..

Answer: We would predict the pressure to be 31.8 psi at 100°C.

Absolute zero is the lowest possible temperature, where all molecular movement stops and there is no pressure. However, in this question we are dealing with temperatures above absolute zero, so we can use the Ideal Gas Law to predict the pressure at different temperatures.

The Ideal Gas Law is PV = nRT, where P is pressure, V is volume, n is the amount of gas, R is the gas constant, and T is temperature in Kelvin.

a) To predict the pressure at 0°C, we first need to convert the temperature to Kelvin. 0°C is equal to 273.15 K. Since the volume and amount of gas are constant, we can rearrange the Ideal Gas Law to solve for pressure:

P = (nRT)/V

Plugging in the values we have:

P = (25 psi)(273.15 K)/(293.15 K)

P = 23.3 psi

So we would predict the pressure to be 23.3 psi at 0°C.

b) To predict the pressure at 100°C, we first need to convert the temperature to Kelvin. 100°C is equal to 373.15 K. Again, we can rearrange the Ideal Gas Law to solve for pressure:

P = (nRT)/V

Plugging in the values we have:

P = (25 psi)(373.15 K)/(293.15 K)

P = 31.8 psi

So we would predict the pressure to be 31.8 psi at 100°C.

To learn more about absolute zero:

https://brainly.com/question/1191114

#SPJ11

The molar mass of the unknown gas is approximately 4.28 g/mol.

What is molar mass?

The molar mass is the mass of a substance in grams that is equal to one mole of the substance. The mole is a unit of measurement in chemistry that represents the number of entities in a substance, such as atoms, molecules, or ions. One mole of any substance contains Avogadro's number of entities, which is approximately 6.022 x 10^23.

The rate of diffusion of a gas is inversely proportional to its square root of molar mass. This relationship is known as Graham's Law of Diffusion.

Given that CO2 diffuses 3.2 times faster than the unknown gas, we can set up the following equation:

(Diffusion rate of CO2) / (Diffusion rate of unknown gas) = 3.2

(1/√(molar mass of CO2)) / (1/√(molar mass of unknown gas)) = 3.2

Squaring both sides:

(1/molar mass of CO2) / (1/molar mass of unknown gas) = 3.2^2 = 10.24

Therefore,

(1/molar mass of unknown gas) = (1/molar mass of CO2) / 10.24

Given that the molar mass of CO2 is 44.01 g/mol,

(1/molar mass of unknown gas) = (1/44.01) / 10.24

Solving for molar mass of the unknown gas:

molar mass of unknown gas = 44.01 / 10.24 = 4.28 g/mol

So, the molar mass of the unknown gas is approximately 4.28 g/mol.

To learn more about molar mass:

https://brainly.com/question/21334167

#SPJ4

To calculate the molar mass of a volatile liquid, you need to measure the difference in the mass of the liquid before and after the experiment. Then divide the mass of the volatile liquid by the number of moles of the liquid used, which you can calculate using the formula: mass (g) / molar mass (g/mol).

Volatile liquids are liquids that have a low boiling point and evaporate quickly. In other words, under normal circumstances (room temperature and pressure), they should be evaporating slowly. They are often used in manufacturing processes because of their ability to easily vaporize and form vaporized compounds.

Examples of volatile liquids include alcohols, ethers, ketones, and hydrocarbons.

Learn more about volatile liquid at https://brainly.com/question/16987333

#SPJ11

Answer:

B

Explanation:

The decreasing order of ionization energy will be Mg >Al >P>K.

Ionization energy sometimes referred to as ionization potential, would be the amount of energy it takes to eliminate an electron from a single, isolated atom or molecule.

On moving top to bottom in the periodic table, ionization energy will decrease rapidly.

Al =13 (group 3)

P =15 (group 5)

Mg =12 (group 2)

K =19 (group 1)

The decreasing order of ionization energy will be Mg >Al >P>K.

To know more about ionization energy.

https://brainly.com/question/18987798

#SPJ1

The incompressible assumption is valid for a flow when the Reynolds number is low (Re < 2300) for air and other gases. It is valid for water and other liquids when the Reynolds number is low (Re < 2000).

It is valid for glycerin and other oils when the Reynolds number is low (Re < 100).

Incompressible assumption

For a fluid flow to be considered incompressible, the change in density due to changes in pressure or temperature must be negligible. The fluid is considered to be incompressible if the density changes by less than 5% when the pressure or temperature is varied.

For air, the incompressible assumption is valid for flow velocities less than 2000 feet per minute (fpm) at 20 degrees Celsius. For other gases, the incompressible assumption is valid for velocities less than 100 fpm at the same temperature.

For water, the incompressible assumption is valid for flow velocities less than 3 feet per second (fps) at 20 degrees Celsius. For other liquids, the incompressible assumption is valid for velocities less than 1 fps at the same temperature.

For glycerin and other oils, the incompressible assumption is valid for flow velocities less than 0.2 fps at 20 degrees Celsius.

Learn more about flow velocities: https://brainly.com/question/13385439

#SPJ11

Answer:

Atoms are extremely important structures that make up all of the materials on earth.

Explanation:

Atoms are in our bodies and they bond together to form molecules, which make up matter.

Answer:

Explanation:

[like living things non-living things have properties that u can see such as color,hardness,or softness]

[living things and non-living things are made of small particles called atoms]

ATOM made up everything that takes up space

Answer:

Pretty sure this is wrong but worth a shot

Explanation:

Ethyl Alcohol is a clear, colorless liquid with a wine-like odor. It is used in alcoholic . Do not rely on odor alone to determine ... This chemical is on the Special Health Hazard Substance. Ethyl Alcohol can affect you when inhaled and by passing through the Ethyl Alcohol may form an ignitable vapor/air mixture in.

Answer:

4 days.

To calculate half life divide original value by 2.

1.2 ÷ 2 = 0.6 grams

0.6 minutes was a half life of new isotope.

A radioisotope is an unstable form of chemical element date releases radiation is it breakdowns and becomes more stable so, radioisotopes may occur in nature or it will be made in a laboratory also.

Uses of radioisotopes:

It is used in cancer treatment, food irradiation, gauges and radiography.

The time required for half of something to undergo a process such is the time required for half of the items of radioactive substance to become disintegrated.

Half life is the time taken for the radioactive of a substance to phone to half its original values where is mean life is average lifetime of all the nuclei of a particular unstable atomic species.

Radioactive element has a half life of one hour this means that half of it will decay in one hour after another hour half of the remaining material will decay.

Half life of the new isotope is 1.2/2 = 0.6 minutes

0.6 minutes was a half life of new isotope.

Learn more about radioisotope, Here:

https://brainly.com/question/19472025

#SPJ2

Answer:

The answer is a constellation