Which statement describes a step in the formation of an ionic bond?

The number of atoms of nitrogen in an 80.0 g sample of dinitrogen tetroxide (N₂O4) is 1.047 * 10²⁴ atoms.

The number of nitrogen atoms in an 80.0 g sample of dinitrogen tetroxide (N₂O4) is calculated as follows:

Molar mass of N₂O4 = 92 g/mol

Moles of N₂O4 in 80.0 g sample = 80/92

Moles of N₂O4 in 80.0 g sample =0.87 moles

Moles of nitrogen in the sample = 0.87 * 2

Moles of nitrogen in the sample = 1.74 moles

1 mole of nitrogen contains 6.0 * 10²³ atoms

Number of atoms of nitrogen = 1.74 * 6.0 * 10²³ atoms

Number of atoms of nitrogen = 1.047 * 10²⁴ atoms

Learn more about number of atoms at: https://brainly.com/question/28447190

#SPJ1

The net ionic equation of potassium hydroxide and perchloric acid combined in aqueous solutions is

H⁺ + OH⁺ → H₂O

Step 1: Complete the equation, write the correct chemical formula for each compound both in reactant and product  

Step 2: Separate the compounds in ionic form.

Step 3: Stike out the common element in the product and the reactant side.

Demonstration: KOH (aq) + HCLO₄ (aq) → KCLO₄(aq) + H₂O(lq)

Total ionic equation: K⁺ + OH⁻ + H⁺ + CLO₄ → K⁺ + CLO₄ + H₂O

Net ionic equation: H⁺ + OH⁻ → H₂O

To know more about net ionic equations and examples visit:

https://brainly.com/question/15466794

#SPJ9

The heating is done to eliminate water from the molecule, if second heating is not done it means water is present in a compound so it will show higher molecular mass. The artificial calculated mole of water is lower.

Mole is defined as a standard scientific unit  for measuring large quantity for very small unit.

Heating is done to eliminate water from the compound, if second heating is not done it means water is present in the compound. While calculating we will get higher molecular mass and moles of water is lower then the actual value.

The artificially calculated moles of water is lower, because the student consider the lower initial mass. The difference between the said value and calculated value is also lower and the student will think that less water was consumed on heating.

Thus, the heating is done to eliminate water from the molecule, if second heating is not done it means water is present in a compound so it will show higher molecular mass. The artificial calculated mole of water is lower.

To learn more about Mole, refer to the link below:

https://brainly.com/question/26416088

#SPJ1

The facts you find in reference source that support your data in an experiment​ is known to be called research.

Research is known to be a term that is defined as as  a kind of "creative and methodical form of activity done to improve the body of knowledge.

It entails the objective gathering, organizing, and analysis of data in order to improve comprehension of a subject or issue.

The Research is described as the thoughtful analysis of studies pertaining to a certain issue or problem utilizing scientific methodologies.

Therefore, since Research is a methodical inquiry, one can say that he facts that you find in reference source that support your data in an experiment​ is known to be called research.

Learn more about research from

https://brainly.com/question/968894
#SPJ1

When atoms close in and overlap each other; atoms repel each other. When atoms lie separated from each other; atoms attract each other

According to the theory of valence bonds, a covalent bond is made up of two atoms that are joined together and produce a pair of electrons that are shared by both of their bonded atomic orbitals. When a portion of one orbital and a portion of a second orbital occupy the same region of space on two separate atoms, we say that their orbitals overlap. The valence bond theory states that a covalent bond forms when two circumstances are true:

1. orbital on one atom overlaps another, and two solitary electrons in each orbital come together to form an electron pair.

2. atoms are physically connected by a force known as a covalent bond thanks to the attraction between this negatively charged electron pair and the positively charged nuclei of the two constituents. The degree of orbital overlap determines how strong a covalent bond will be. Stronger bonds are created by orbitals with more broad orbital overlap than by those with less overlap.

To learn more about overlapping please visit-
https://brainly.com/question/6270186
#SPJ9

Answer:

Cobalt(III) Borate CoBO3 Molecular Weight -- EndMemo.

Explanation:

Answer:

Atomic radius is the radius of an atom. It can be attained through measuring the radius of an atom in a variety of bonds and averaging them to get it.

Explanation:

Answer:

yes, atomic structure the center of the atom is nucleus ;

The nucleus is the positively charged centre of an atom and contains most of its mass. It is composed of protons, which have a positive charge, and neutrons, which have no charge. Protons, neutrons, and the electrons surrounding them are long-lived particles present in all ordinary, naturally occurring atoms.

First we will balance the given equation:

NaBH4 (s) + BF3(g) B₂H6(g) + NaBF4(s)

Balanced equation:

3NaBH4 (s) + 4BF3(g) 2B₂H6(g) + 3NaBF4(s)

ii) 4 moles of BF3 reacts with 3 mole of NaBH4

1 mole of BF3 reacts with 3/4 = 0.75 mole of NaBH4

so the 1.299 moles of BF3 will react with 1.299× 0.75 = 0.974 moles of NaBH4

iii) 3 moles of NaBH4 gives 2 moles of B2H6

1 mole of NaBH4 gives 2/3 = 0.6 moles of B2H6

so, 0.893 mole of NaBH4 will give 0.893 × 0.6 = 0.535 molesof B2H6.

iv) 2 moles of B2H6 is produced with 3 moles of NaBF4

if 1 mole of B2H6 is produced then 3/2 = 1.5 moles of NaBF4 is produced with it.

so is 1.987 mol of B2H6 is obtained then 1.987 × 1.5 = 2.98 moles of NaBH4 will be obtained.

Learn more about balancing equation here

https://brainly.com/question/26227625

#SPJ9

The solubility of k2so4 at 70oCis 100ml

From the curve, at 70°C temperature 50g of K2SO4 can be dissolved in 100 ml of H2O

To know more about K2SO4 visit:
https://brainly.com/question/14395186
#SPJ9

Answer:

Organic compound features:

Explanation:

Complex structures

High molecular weights

Depend on Carbon, Hydrogen and Water

Combustile in nature

Form covalent bonds

Low melting and boiling points

Answer:

The number of electrons in atoms determine an element's chemical properties.

Hope this helps in any way :)

The equilibrium constant is 0.026.

Let us recall that the equilibrium constant is a number that shows us the extent to which reactants are converted into products. In other words, a large positive value of the equilibrium constant indicates that most of the reactants have been converted into products.

Initial concentration of A =  0.880 mol /3.00 L = 0.29 M

Equilibrium concentration of C = 0.150 mol /3.00 L = 0.05 M

We can set up the ICE table thus;

        2A(aq)   ⇄   2B(aq)  +   C(aq)

I      0.29 M         0                  0

C       -2x               +2x            +x

E   0.29 - 2x         2x                0.05 M

Where

x = 0.05

At equilibrium;

[A] =    0.29 - 2(0.05 ) = 0.19 M

[B] = 2(0.05) = 0.1 M

[C] = 0.05 M

K = [B] [C] /[A]

K = 0.1 * 0.05/ 0.19

K = 0.026

Learn more about equilibrium constant:https://brainly.com/question/10038290

#SPJ1

The accurate measurement is 0.51s and precise one is 0.516 s to 0.524 s.

0.51 is accurate measurement because this value is more closer to 0.500 s compared to other given options.

The measurement of 0.516 and 0.524 must have taken from highly precised instrument because it is capable of making measurement upto 3 decimal place.

Hence 0.516s and 0.524s is most precise team.

Learn more about accuracy and precision here:

https://brainly.com/question/1695072

#SPJ9

The elements involved could be ba--rium and strontium.

We know that the ionization energy refers to the energy that must be supplied in order for an electron to leave the atom. The energy could bee supplied in the form of heat or light.

In the question, we have the first four ionization energies of the elements X and Y. The lower first and second ionization energies suggest that the electrons are removed from the outermost shells and that the two elements are divalent. That explains the quantum jump that occurs after the second ionization energy in each case.

The low first and second ionization energies implies that the elements are highly electropositive and are likely to be ba--rium and strontium.

Learn more about ionization energy:https://brainly.com/question/2193565

#SPJ1

Answer:

7.51

×

10

24

The density

ρ

of a sample is its ratio of mass

m

to volume

V

:

ρ

=

m

V

.

To find the number of atoms in this sample, first multiply the volume by the density to get the mass. Then divide this mass by the mass of one atom.

133

c

m

3

T

a

(

17.0

g

1

c

m

3

)

(

1

atom

T

a

3.01

×

10

−

22

g

T

a

)

=

7.51

×

10

24

Ta atoms

Taking into account the definition of density, the metal with a volume of 12.3 mL and a mass of 96.7 g is iron.

Density is defined as the property of matter, whether solid, liquid, or gas, that allows the amount of mass in a given volume of a substance to be measured.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density= mass÷ volume

In this case, you know that:

Replacing in the definition of density:

density= 96.7 g÷ 12.3 cm³

Solving:

density= 7.86 g/cm³

On the other hand, you know that the densities of zinc, chromium and iron are 7.89, 7.20 and 7.86 g/cm³, respectively.

Finally, the metal with a volume of 12.3 mL and a mass of 96.7 g is iron.

Learn more about density:

brainly.com/question/952755

brainly.com/question/1462554

#SPJ1

In FET colleges, there are six broad area of study: arts, business, education, engineering, management, and agricultural.

Institutions offering Further education and Training (FET) are those that offer instruction and training to students in grades 10 through 12.

It also includes training that is efficient and career-focused that is provided by technical, community, and private universities.

To know more about  FET

https://brainly.com/question/28185392

#SPJ9

In an exothermic reaction, the energy of the reactants is greater than the energy of the products.

The term exothermic reaction refers to a kind of reaction in which heat is given out in the system. In this type of reaction, the reaction vessel feels hot as a result of the fact that heat is given out. The energy of the reactants is greater than the energy of the products.

If we look at the enthalpies of an endothermic and exothermic reaction, we can see that the enthalpy of an endothermic reaction is positive while the value of the enthalpy change of an exothermic reaction is negative implying that heat was given out.

In the case of an endothermic reaction, energy is absorbed from this system. In this case, the reaction vessel feels cool as the energy of the products is greater than that of the reactants.

Learn more about exothermic reaction:https://brainly.com/question/10373907

#SPJ1

The density of pure water is 1 g/cm^3.

Its density is 0.98 g cm 3 at room temperature, in comparison with the handiest zero.92 g cm 3 for ice, a reality that has to be defined through atomic, and molecular concepts. If ice has been no longer much less dense than water, it might sink, having a devastating impact on lake backside ecosystems. believe it or now not, ice is honestly about 9% much less dense than water. for the reason that water is heavier, it displaces the lighter ice, causing the ice to glide to the pinnacle.

The density of ice is about 90 percent that of water, but that could range because ice can contain air, too. meaning that about 10 percent of an ice cube or iceberg will be above the water line. The density of water is maximum at four∘C, and the density of the ice is much less than the water due to its susceptible intermolecular pressure of attraction. as the density of water is more, it's miles heavier than ice. therefore ice floats on the floor of the water. Ice continually floats due to the fact it's far less dense than everyday water. because frozen water molecules shape a crystal.

Learn more about A density here:-https://brainly.com/question/17780219

#SPJ9

The body's muscles become increasingly paralyzed as a result of tetrodotoxin's interference with the signaling process from nerves to muscles. Toxic exposure to tetrodotoxin may be lethal.

Scrub all right, had to drink a poisonous substances that paralyzes body resulting in death.

Tetrodotoxin (TTX), a neurotoxin, is extremely poisonous.

Tetrodotoxin is a sodium channel blocker. It stops neurons from firing action potentials by clinging to the voltage-gated sodium channels in nerve cell membranes and obstructing sodium ions from entering the neuron, which are crucial for an action potential's rising phase.

Due to the neurological system's inability to communicate, muscles are unable to contract in response to nerve inputs. It works by selectively blocking sodium channels.

The majority of its occurrences are in the livers and sex organs of several fish species, such as puffer fish, globefish, and toadfish (order Tetraodontiformes) (gonads).

To know more about Poisonous substances, click on the link below:

https://brainly.com/question/14819715

#SPJ1

A sample of 25.0-g pure iron at the 85 °C is dropped into 75 g of water at 20°C.  22.25 °C is the final temperature of the water-iron mixture.

The specific heat equation is represented as

Q = mcΔT

where,

Q = heat energy in Joules

m = mass of substance

c = specific heat

ΔT = change in temperature in K

For iron given that

m = 25 g

c = 0.45 J/g°C

T₁ = 85°C

Now by putting the values in the above formula then we get

Q₁ = mcΔT

    = 25 × 0.45 × (T₂ - 85)

    = 11.25 × (T₂ - 85)

For water given that

m = 75 g

c = 4.184 J/g°C

T₁ = 20°C

Now,

Q₂ = mcΔT

     = 75  × 4.184 × (T₂ - 20)

     = 313.8 × (T₂ - 20)

Now,

Heat is generated by the iron = Heat is gained by the water.

Q₁ = -Q₂

11.25 × (T₂ - 85) = - 313.8 × (T₂ - 20)

325.05 T₂ = 7232.25

T₂ = 22.25 °C

22.25 °C is the final temperature of the water-iron mixture.

Learn more about the Specific heat here:  https://brainly.com/question/21406849

#SPJ9

Answer:

Atoms

Explanation:

Atoms are made of extremely tiny particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom, making up the nucleus. Electrons surround the nucleus. Protons have a positive charge.

The conclusions that can be drawn from the examination is that peanuts contain lipids and proteins.

Sudan IV is a dye used for staining of lipids ,triglycerides.The test making use of Sudan IV involves adding a few drops of Sudan IV to the solution containing lipids.

If no lipids are present in the sample ,the dye sinks at the bottom of the test tube.Positive test for Sudan IV involves the color of the reagent changing to red.

Biuret  test is a chemical test used for detection of peptide bonds that is in turn proteins present in a sample.In the presence of proteins, it forms a violet color co-ordination complexes in alkaline range.

The test can be used for testing the concentration of proteins as peptide bonds occur along the same frequency per amino acid.

To know more about Sudan IV and Biuret reagent click here:

https://brainly.com/question/9681978

#SPJ1

5.845 mg of table salt provides the upper safe limit  in the recommended daily requirement of sodium.

Molar mass of common table salt that is sodium chloride is         23.0+35.5=58.5 g/mole which is the addition of molar masses of sodium and chlorine,the constituents of sodium chloride.

As the common table salt is 39.3% sodium by mass therefore it has 23.01975 g or 23019.75 mg of sodium.

                      39.3/100×58.5=23019.75

As 58.5 g of sodium chloride has 23.019 g of sodium therefore 2.3 g of sodium is present in 5.845 g, which is 5.845×10[tex]^-3[/tex]mg.

                 2.3×58.5/23.019=5.845 mg.

Mass percent of any compound is usually calculated as mass of the compound divided by it's total mass and then multiplied by hundred.It is a way of expressing concentration of a component.It describes how much solute is present in 100 grams of solution.

To know more about mass percent calculations click here:

https://brainly.com/question/5840377

#SPJ1