for nicn4write out a reducible representation for this group of four ligand orbitals and deccompose its component irreducible representations

Answer:

A precipitate is formed as a result of a double displacement reaction. Explanation: When two substances (can be aqueous or liquids) in solution ...

Answer:

Adiroak is rhe answere

The resulting pH of the solution formed by adding 200 ml of 0.30 M formic acid to 400 ml of water, with a pKa of 3.75, is approximately 2.3.

To determine the resulting pH of the solution, we need to consider the dissociation of formic acid (HCOOH) in water. Formic acid is a weak acid that partially dissociates into hydrogen ions (H⁺) and formate ions (HCOO⁻). The dissociation constant of formic acid is represented by pKa, which is equal to -log(Ka), where Ka is the acid dissociation constant.

Given the pKa of formic acid as 3.75, we can use the Henderson-Hasselbalch equation to calculate the pH:

pH = pKa + log([A⁻]/[HA])

In this case, [A⁻] represents the concentration of the formate ions and [HA] represents the concentration of the undissociated formic acid. The total volume of the resulting solution is 200 ml + 400 ml = 600 ml.

Using the given concentration of 0.30 M formic acid, we can calculate the concentration of formate ions ([A⁻]) and undissociated formic acid ([HA]):

[HA] = concentration of formic acid = 0.30 M x (200 ml/600 ml) = 0.10 M

[A⁻] = concentration of formate ions = 0.30 M x (400 ml/600 ml) = 0.20 M

Substituting these values into the Henderson-Hasselbalch equation:

pH = 3.75 + log(0.20/0.10) = 2.3 (rounded to one decimal place)

Therefore, the resulting pH of the solution is approximately 2.3 when 200 ml of 0.30 M formic acid is added to 400 ml of water with a pKa of 3.75.

To know more about formic acid refer here:

https://brainly.com/question/30620222#

#SPJ11

Complete Question:

if 200ml of 0.30M formic acid is added to 400 ml of water, what is the resulting PH of the solution? round the answer to one decimal place Pka 3.75

Answer:

1 grams Hydrogen is equal to 0.992122546977 mole.

Explanation:

Hydrogen is equal to 0.992122546977 mole.

The balanced chemical equation for the reaction between copper and silver nitrate is

Cu(s) + 2AgNO₃(aq)  → 2Ag (s) +  Cu(NO₃)₂ (aq)

In the above reaction, Cu is a reactant, AgNO₃ is another reactant

When both are mixed they make a reaction where there are formed Ag and Cu(NO₃)₂.

This is a redox reaction where:

Cu is reduced ⇒  Cu → Cu²⁺  +  2e⁻

Ag⁺ is oxidized ⇒ Ag⁺ + 1e⁻ → Ag

To balance the reaction, we multiply the second half reaction by 2

Cu → Cu²⁺  +  2e⁻

(Ag⁺ + 1e⁻ → Ag) .2  ⇒  2Ag⁺ + 2e⁻ → 2Ag

When we sum both, we cancel the electrons:

Cu  +  2Ag⁺ + 2e⁻  →  2Ag  +  Cu²⁺  +  2e⁻

Balanced reaction is:

Cu(s) + 2AgNO₃(aq)  → 2Ag (s) +  Cu(NO₃)₂ (aq)

To know more about copper here

https://brainly.com/question/32039651

#SPJ4

The complete question should be

Write the chemical equation for this process: ""Copper metal is placed in a solution of silver nitrate. This produces silver metal and copper nitrate solution.""

Answer:

Because the density of water is one

The two factors that determine the atomic mass of an element are the number of protons and neutrons in the nucleus. The atomic mass of an element is the sum of its protons and neutrons. Therefore, the number of neutrons in the nucleus also plays an essential role in determining the atomic mass.

The atomic number of an element determines its placement in the periodic table, and it is equivalent to the number of protons in its nucleus. On the other hand, isotopes of an element differ in the number of neutrons, which affects their atomic mass.The atomic mass of an element is expressed in atomic mass units (amu), and it is typically rounded to the nearest whole number since the mass of an individual proton or neutron is small enough to be negligible. Thus, the atomic mass of an element is determined by the mass number, which is the sum of its protons and neutrons rounded to the nearest whole number.

In conclusion, the atomic mass of an element depends on the number of protons and neutrons in its nucleus. Protons are responsible for defining the element, whereas neutrons are responsible for determining its isotopic form.

To know more about neutrons visit-

https://brainly.com/question/31977312

#SPJ11

The value of x in the figure is

An angle is a geometric figure formed by two rays or line segments that share a common endpoint. This common endpoint is called the vertex of the angle, and the two rays or line segments that form the angle are called its sides.

Angles are measured in degrees, and a full circle contains 360 degrees. Angles can be classified based on their measure. A right angle measures exactly 90 degrees, an acute angle measures less than 90 degrees, and an obtuse angle measures more than 90 degrees but less than 180 degrees.

The figure consist of angel which is an acute angle, an acute angle are angles less than 90 hence 55 is the possible value

Learn more about angles at:

https://brainly.com/question/25770607

##SPJ1

Based on the graph, the grams that can be dissolved at a temperature of 80° C are 50 grams.

The number of grams that can be dissolved depends on the substance and the temperature. In the case of the KCL, the graph shows the solubility of this substance increases with temperature.

Now, if we observe the graph at a temperature of 80°C the number of grams that can be dissolved are 50 grams. This increases to about 57 grams at a temperature of 100° C.

Learn more about solubility in https://brainly.com/question/29661360

#SPJ1

The molar mass of CCl4 is 153. 81 g/mol. '769.0 g' of CCl4 are needed to have 5.000 mol.

What is molar mass?

Molar mass is the mass of one mole of a substance. It is usually expressed in grams per mole (g/mol). The molar mass of a substance is calculated by taking the sum of the atomic weights of all of the atoms in the molecule multiplied by the Avogadro constant (6.022x10^23).

To find the number of grams of CCl4 needed to have 5.000 mol, use the formula:

Mass (grams) = Molar mass (g/mol) x Number of moles

Mass (grams) = 153.81 g/mol x 5.000 mol

Mass (grams) = 769.0 g.

'769.0 g' of CCl4 are needed to have 5.000 mol.

To know more about molar mass,

https://brainly.com/question/837939

#SPJ4

Answer:

velocity = 100 km/h

Explanation:

To calculate the velocity given the distance travelled and the time taken, we can use the following formula:

\(\boxed{\mathrm{velocity = \frac{distance \ travelled}{time \ taken}}}\).

In the question, we were told that Ayana travelled 60 km in 0.6 h. Using this information and the formula above, we can calculate Ayana's velocity:

velocity = \(\frac{60 \ km}{0.6 \ h}\)

             = 100 km/h

Therefore, her velocity was 100 km/h.

Answer:

  0.0135 moles

Explanation:

You want to know the number of moles of gas in a 0.325 L container at 1.00 atm and 293 K.

The ideal gas law is ...

  PV = nRT

Solving for n, the number of moles can be found as ...

  n = PV/(RT)

  n = (101.325 kPa)(0.325 L)/(8.3145 L·kPa/(K·mol)·293 K) ≈ 0.0135 mol

The container can hold 0.0135 moles of gas.

__

Additional comment

1.00 atm = 101.325 kPa

Answer:

A small positively charged nucleus surrounded by revolving negatively charged electrons in fixed orbits

Answer: The answer would be 158,200

STEP 1: To solve this question, we must first find the number of moles in a 13g solution of NaNO3 (molar mass = 85g/mol):

moles of NaNO3 = mass / molar mass

moles of NaNO3 = (13g) / (85g/mol)

STEP 2: The ratios of the compound are 3 moles of oxygen, 1 mole of sodium, and 1 mole of nitrogen. As such, for every 1 mole of NaNO3, there are 3 moles of oxygen, and the answer is:

moles of oxygen = (3) x (13/85)

Molar mass can be defined as 'mass per mole.' In other words, molar mass is the sum of the mass of all the atoms found in one mole's worth of a substance. It is expressed in units of grams per mole.

Molar mass is depicted for elements or molecules. In the case of single elements or individual atoms, the molar mass would just be the element's mass expressed in atomic mass units. In other words, the atomic mass and the molar mass of an individual atom are exactly equal.

When individual atoms are bonded to form a molecule, the molar mass represents the mass of all the atoms. Molar mass is different from molecular mass in that molecular mass is the mass of a given molecule, whereas molar mass is the mass of one mole of the given molecule.

Learn more about molar mass

https://brainly.com/question/837939

#SPJ4

Answer:

summers get hotter, and it can get more sticky or humid sometimes.

Explanation:

think of the seasons and the tempatures.

The average atomic mass of Rubidium : 85.226 u

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.  

So Isotopes are elements that have the same Atomic Number (Proton)  

Atomic mass is the average atomic mass of all its isotopes  

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu  

Mass atom X = mass isotope 1 . % + mass isotope 2.%  

The abundance of 85Rb is 80% and the abundance of 87Rb is 19.8%, so the average atomic mass of Rubidium :

\(\tt the~average~atomic~mass=0.8\times 85+0.198\times 87\\\\the~average~atomic~mass=\boxed{\bold{85.226~u}}\)

Balanced equation :

C₂H₆+7O₂⇒4CO₂+6H₂O

Conservation of mass :

In a closed / isolated system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.

Conservation of mass applies to a closed system, where the masses before and after the reaction are the same

This is the basis of reference, that the total atoms in the reactants will be equal to the total atoms in the product

The elements in the reaction will also be found in the product, but in the form of other compounds

Reaction

\(\tt C_2H_6+O_2\rightarrow CO_2+H_2O\)

Let's look at the number of atoms in the reactants and products

C,left=2, right=1

H,left=6, right 2

O,left=2, right 3

So the equation not balanced

To balance, we can use the formula for burning alkanes or by using mathematical equations

1. Formula(in this case the hydrocarbon is ethane,n=2)

\(\large {\boxed {\bold {C_nH _ (_2_n _ + _ 2_) + \dfrac {3n + 1} {2} O_2 \rightarrow nCO_2 + (n + 1) H_2O}}}\)

2. Mathematical equations

give equation

C₂H₆+aO₂⇒bCO₂+cH₂O

C,left=2, right=b⇒b=2

H,left=6,right=2c⇒2c=6⇒c=3

O,left=2a,right=2b+c⇒2a=2b+c⇒2a=2.2+3⇒2a=7⇒a=7/2

C₂H₆+7/2O₂⇒2CO₂+3H₂O x 2

C₂H₆+7O₂⇒4CO₂+6H₂O

Visible and infrared light do not cause sunburn and they are not known to directly be a skin cancer risk.

A central atom with less than an octet of electrons is C.\(BH_{3}\)

\(BH_{3}\), or boron trihydride, consists of a central boron atom covalently bonded to three hydrogen atoms. In its ground state, boron has an electron configuration of 1s²2s²2p¹, which means it has three valence electrons. When forming bonds with the three hydrogen atoms, boron shares one electron with each hydrogen, resulting in a total of six electrons around the central boron atom.

This configuration is known as an incomplete or deficient octet, as the central boron atom does not follow the octet rule, which states that atoms tend to form bonds to have eight electrons in their valence shell. In the case of \(BH_{3}\), the central boron atom has only six valence electrons. On the other hand, the central atoms in the other molecules (A. \(H_{2} O\), B. \(NH_{3}\), D. \(CH_{4}\), and E. \(SiH_{4}\)) all follow the octet rule, as they have eight electrons in their valence shells when bonded to their respective surrounding atoms.

In summary, the molecule with a central atom having less than an octet of electrons among the given options is C. \(BH_{3}\), with boron as the central atom possessing only six valence electrons.

Know more about octets here:

https://brainly.com/question/1202688

#SPJ11

Answer:

Sublimation

Explanation:

Sublimation refers to the process by which the change of matter takes place directly from solid to liquid state. The matter from the solid-state directly changes into the gaseous state without changing into the liquid state. More energy is required in this process. This is an endothermic reaction. Dry ice is the solid carbon dioxide sublimes in the air.

Answer: D convection currents

Explanation:

The seafloor spreading is a phenomena that occurs due to liberation of heat from the convection currents generated in the mantle. It makes the earth crust more plastic and less dense. This happens at divergent plate boundaries. As the plates move apart, the less denser material rises. It leads to the formation of mountain and crust cracks.

Answer:

the correct answers is "neutralize"

Explanation:

When an acid is related to a base or also called an alkali and they reach a pH of 7, this acid will be neutralized or it will be canceled as the question says.

This happens so it reaches an equilibrium between both compounds, where the solution medium where these two compounds are is NEITHER ACID NOR BASIC, that is why it is called NEUTRAL medium.

Whenever you read that the pH of a solution is balanced, a neutralized acid, or a ph7 it means that the solution is NEUTRAL.

Answer:

Non of them. The diameter of an atom is about 0.1 to 0.5 nanometer (1 × 10−10 m to 5 × 10−10 m)

No, the solution will not be saturated. In order for the solution to be saturated, the amount of Ca(OH)2 added to the water must be greater than the solubility of Ca(OH)2 in water.

Water is a clear, odorless, tasteless liquid that is essential for all known forms of life. It is composed of two hydrogen atoms and one oxygen atom (H2O). Water covers more than 70% of the Earth's surface, and is found in the atmosphere, rivers, lakes, oceans, and even in organisms. It is an essential part of the Earth's hydrological cycle, which is the process of water moving from the atmosphere to the ground, then evaporating and condensing, eventually returning to the atmosphere. Water also plays an important role in regulating the temperature of the planet, as it absorbs and releases heat energy.

To learn more about water

https://brainly.com/question/25597694

#SPJ1

Answer:

C. 1.6 atm

Explanation:

PV = nRT

Solve for P --> P = nRT/V

n = 3.0 mol

R = 0.08206 L atm / mol K

T = 400.0 K

V = 60.0 L

P = (3.0)(0.08206)(400.0) / (60.0) = 1.6 atm

For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized or reduced. H₂S 2NAOH is the highlighted atom being reduced in the given chemical reaction is sulfur (S), while the highlighted atom being oxidized is hydrogen (H).

H₂S + 2NaOH → 2H₂O + Na₂S, is the chemical equation provided in the table above. The reaction between hydrogen sulfide and sodium hydroxide is a redox reaction. A redox reaction is a reaction that involves a transfer of electrons between two species. The oxidation state of sulfur (S) changes from -2 to 0; thus, the sulfur (S) atom is reduced in this reaction. Sodium's (Na) oxidation state changes from +1 to 0, indicating that it has been reduced.

The hydrogen's (H) oxidation state has not changed; it remains +1, indicating that it is neither oxidized nor reduced. The hydrogen sulfide's (H₂S) oxidation state changes from -2 to 0, indicating that it has been oxidized. The sodium hydroxide's (NaOH) oxidation state changes from +1 to -1, indicating that it has been oxidized as well. Hence, the highlighted atom being reduced in the given chemical reaction is sulfur (S), while the highlighted atom being oxidized is hydrogen (H).

Learn more about redox reaction at:

https://brainly.com/question/13293425

#SPJ11

The resulting temperature change is: 40 degrees c

Here given heat added to system 40kcl

Weight of water 1kg we know the specific heat of water is

S= 4.2 J/g \degree c=1 cal/g\degree c

Q=40kcal  m=1.0 kg=4000 g

We have the heat transfer equation given by

Q= ms\Delta t   where Q=heat energy   m=mass

\Delta t=change in temperature

Put the values and we'll have a change in temperature

\Delta t= \(\frac{Q}{ms}\)

\Delta t= 40 degree C

Temperature is a numerical expression of how hot a substance or radiation is.

There are three different types of temperature scales: those that are defined by the average translational kinetic energy per freely moving microscopic particle, like an atom, molecule, or electron, in a body, like the SI scale; those that rely only on macroscopic properties and thermodynamic principles, like Kelvin's original definition; and those that are not defined by theoretical principles but rather by useful empirical properties of particulate matter.

A thermometer is used to determine temperature. It is calibrated using different temperature scales that historically defined themselves using different reference points and thermometric substances.

To learn more about temperature visit here :

https://brainly.com/question/23411503

#SPJ4