What is the complete reaction

All the statements given above are correct.

Atoms within resonance structures are the same. The species' structure is not accurately reflected by a single resonance structure.

A representation of a molecule or an ion called a resonance structure depicts several electron combinations that are not conceivable in a single, static structure.

Resonance hybrid refers to the actual structure of the molecule or ion, which is an average of the potential resonance structures.

Resonance structures are not different in terms of atoms, but rather in the arrangement of electrons.

Resonance structures vary, and no single resonance structure can fully capture the structure of an entire species.

The species that make up resonance structures have isomers.

The species could have any of these structures at any time since resonance forms quickly interconvert.

It is not real to have individual resonance shapes.

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The balanced chemical equations are shown below:

1. Al (s) + 3HCI (aq) → AlCl3 (aq) + 3H2(g)

2. 2K (s) + 2H2O (1) → 2KOH (aq) + H2 (g)

3. 3Mg (s) + N2 (g) → Mg3N2 (s)

4. 2NaNO3 (s) → 2NaNO2 (s) + O2(g)

5. Ca(OH)2 (s) + 2H3PO4 (aq) → Ca3(PO4)2 (s) + 6H2O (1)

6. C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)

7. 4NH3 (g) + 5O2 (g) → 4NO (g) + 6H2O (g)

8.  N2 (g) + 3H2 (g) → 2NH3 (g)

9. Na2CO3 (s) + 2HCI (aq) → 2NaCl (aq) + CO2 (g) + H2O (1)

10. C3H5OH (1) + 9O2 (g) → 3CO2 (g) + 4H2O (g)

11. 2NH3 (g) + 3CuO (s) → N2 (g) + 3Cu (s) + 3H2O (g)

Step 1. count the atoms on each side.

step 2. change the coefficient of one of the substances.

step 3.  count the numbers of atoms again and, from there,

step 4. repeat steps two and three until you have  balanced the equation.

A chemical equation is described as the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.

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Answer:

In the case of s and p orbitals, there can be three types of overlap. s – s orbital overlap (formation of H2 molecule): The mutual overlap between the half-filled s orbitals of two atoms is called s – s overlap and the covalent bond formed is known as sigma (s) bond. e.g. formation of a hydrogen molecule from two hydrogen atoms.

Explanation:

Answer:

When two metal atoms are bonded together, a third type of bond, a delta bond, is possible.

Explanation:

Explanation:

\(molar \: mass \: of \: iron = 56 \: g \\ 56 \: g\: are \: weighed \: by \: 1 \: mole \: of \: iron \\ 595 \: g \: will \: be \: weighed \: by \: ( \frac{595}{56} ) \: moles \\ = 10.625 \: moles \: of \: iron \\ from \: equation : \\ 1 \: mole \: of \: iron \: is \: formed \: by \: 1 \: mole \: of \: hydrogen \\ 10.625 \: moles \: will \: be \: produced \: by \: (10.625 \times 1) \: moles \\ = 10.625 \: moles \: of \: hydrogen \\ at \: s.t.p : \\ 1 \: mole \: = \: 22.4 \: litres \\ 10.625 \: moles \: = (22.4 \times 10.625) \\ = 238 \: litres \\ \\ or \: at \: r.t.p : \\ 1 \: mole \: = 24 \: litres \\ 10.625 \: moles \: = \: (10.625 \times 24) \\ = 255 \: litres\)

Two px atomic orbitals were used to form a sigma bonding MO (figureII, lower energy) and a sigma antibonding MO (figure I, higher energy). The bonding MO does not have a node separating the two halves of the orbital.

An atomic orbital is a function in atomic theory and quantum mechanics that describes the location and wave-like behavior of an electron in an atom. This formula can be used to calculate the likelihood of locating any atom's electron in any given location surrounding the nucleus. The phrase atomic orbital can also refer to the actual region or place where the electron is projected to be present given the orbital's mathematical form.

Each orbital in an atom is defined by a set of values of the three quantum numbers n, l, and ml, which correspond to the energy, angular momentum, and an angular momentum vector component of the electron, respectively (magnetic quantum number).

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2 and 1 coefficients should be used to balance the skeleton equation for the formation of sodium oxide.

To balance the skeleton equation for the formation of sodium oxide, the following coefficients should be used:

Na + O ---> Na2O

This equation shows that 2 moles of sodium react with 1 mole of oxygen to produce 2 moles of sodium oxide. The coefficients 2 and 1 ensure that the number of atoms of each element is balanced on both sides of the equation.

Chemical formulas and symbols used in chemical equations are used to represent chemical reactions symbolically. The reactant entities are supplied on the left, and the product entities are given on the right, with a plus sign separating the entities in both the reactants and the products, and an arrow pointing in the direction of the products to show the direction of the reaction. Chemical equations can be either mixed, structural or both. Coefficients are displayed next to the symbols and formulas of the various entities, together with the absolute values of the stoichiometric numbers.

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The pH of each of the solutions is;

1) 1

2) 2

3) 5
4) 7

5) 9

6) 11

7) 13

The lower the concentration of hydrogen ions, the higher the pH value, indicating a more alkaline solution. Conversely, higher concentrations of hydrogen ions result in lower pH values, indicating a more acidic solution.

We know that the pH is the negative logarithm of the hydrogen ion concentration. Let us now take the solutions individually.

1) pH = - log(0.1)

= 1

2) pH = - log(0.01)

= 2

3) pH = -log(0.00001)

= 5

4) pH = 7

5) pOH = -log(0.00001)

= 5

pH = 14 - 5

= 9

6) pOH = -log(0.001)

= 3

pH = 14 - 3

= 11

7) pOH = -log(0.1)

= 1

pH = 14 -1

= 13

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The conversion factors to the conversions that they would be used for as follows:

1.moles/grams ⇒ d. mass to mole

2.grams/moles ⇒ a. mole to mass

3.atoms/grams ⇒ e. mass to atom

4.moles/atoms ⇒ c. atoms to mole

5.atoms/moles ⇒ b. moles to atoms

The term mole is defined as the amount of substance of a system which contains as many elementary entities.

One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.

The mole concept can be used to convert between mass and number of particles.

Thus, The conversion factors to the conversions that they would be used for moles/grams ⇒ mass to mole.

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Mass of 2.23x10²³ atoms of sulphur with molar mass of 32.07 grams per mole is equals to the 2.65 g per mole.

Avogadro's number, is a constant number of units in one mole of any substance (may be defined as its molecular weight in grams), equal to 6.02214076 × 10²³. The units represents electrons, atoms, ions, or molecules, depending on the nature of the substance and the character of the reaction. We have 2.23× 10²³ atoms of sulpher. We have to determine the mass of these atoms. Now, one mole of sulphur is 6.02214076 × 10²³ atoms or molecules.

Molar mass of sulphur = 32.07 grams/mol

6.02214076 × 10²³ atoms or molecules = 1 mole

1 atom =\( \frac{ 1}{6.02214076 × 10²³}\)

So, 2.23× 10²³ atoms of sulphur = \(2.23× 10²³ × \frac{ 1}{6.02214076 × 10²³}\) moles. Using molar mass formula, Molar mass = mass of substance divided by number of moles of substance.

=> Mass of sulphur = \(32.07 ×2.23× 10²³ × \frac{ 1}{6.02214076 × 10²³} g\\ \)

= 2.65 g

Hence, required value is 2.65 g per mole.

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After mixing 5.0 mL of 0.0020 M Fe(NO3)3, 3.0 mL of 0.0020 M HSCN, and 2.0 mL of 0.50 M HNO3, the concentration of Fe(NO3)3 will be 0.0010 M.

To find the concentration of Fe(NO3)3 after mixing, we need to calculate the total volume of the solution and the number of moles of Fe(NO3)3 present. The total volume of the solution is the sum of the volumes of the individual solutions: 5.0 mL + 3.0 mL + 2.0 mL = 10.0 mL.

First, let's calculate the moles of Fe(NO3)3:

moles of Fe(NO3)3 = volume of Fe(NO3)3 solution × concentration of Fe(NO3)3

                  = 5.0 mL × 0.0020 M

                  = 0.01 mmol (millimoles)

Since the volume is given in milliliters and the concentration is in moles per liter, we converted the volume to liters by dividing by 1000.

Now, let's calculate the final concentration of Fe(NO3)3:

concentration of Fe(NO3)3 = moles of Fe(NO3)3 / total volume of the solution

                         = 0.01 mmol / 10.0 mL

                         = 0.0010 M

Therefore, the concentration of Fe(NO3)3 after mixing will be 0.0010 M.

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Answer:

detail is given below.

Explanation:

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O  → C₆H₁₂O₆ + 6O₂

The given equation is balanced chemical equation of photosynthesis. There are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

If equation is not balanced,

CO₂ + H₂O  → C₆H₁₂O₆ + O₂

It can not follow the law of conservation of mass because mass is not equal on both side of equation.

The acid must always be added to water with constant stirring because the process is highly exothermic and it can be dangerous. Therefore, the assertion is correct but the reason is incorrect.

1.Acid is thoroughly diluted with water before being added.

2.It should be introduced very gradually while being stirred continuously.

3.Acid addition to water is a highly exothermic reaction, releasing a lot of heat in the process.

4.The heat produced by the stirring is absorbed by the water, making the situation safer.

5.The amount of ions in a given volume are more concentrated when an acid and water are combined. However, it has nothing to do with continuously swirling acid into water.

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Answer:

P2=672.1 torr

Explanation:

use the formula P1V1=P2V2, plug in the numbers so your equation should look like this (763.9)x(98.8)=P2(112.3) answer should be P2=672.1 torr

The resultant pressure of the sample of gas is 510.9 torr.

Relation between the pressure and volume will be represented by the ideal gas equation PV = nRT, and for the given question required equation is:

P₁V₁ = P₂V₂, where

P₁ & V₁ are the pressure and volume of initial sample.

P₂ & V₂ are the pressure and volume of final sample.

On putting values from the question to the equation, we get

P₂ = (768.6)(93.2) / (140.2) = 510.9 torr

Hence resultant pressure is 510.9 torr.

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Answer:

the answer is

Explanation:

number of mollecoles

In chemistry a coefficient denotes the number that is seen in front of the formula of a equation. The coefficient in the given equation 4CO₂ is 4.

A number which precedes the formulas of reactants and products in order to balance a chemical equation is defined as a coefficient. It represents the number of atoms or molecules of each elements which are present in the reaction.

A chemical equation should be balanced and it must obey the law of conservation of mass which states that the number of reactants and products on both sides of the equation should be equal.

The coefficients are the numbers which are required to balance a chemical equation and it may vary while balancing a equation. The coefficient is found to be 1 if no number is mentioned in front of the formula of the reactants and products.

In the given equation 4CO₂, 4 is the coefficient which shows that 4 'C' atoms and 8 'O' atoms are present in the compound CO₂.

Thus the coefficient in the compound 4CO₂ is 4.

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Answer:

Oxidation occurs when a reactant loses electrons during the reaction. Reduction occurs when a reactant gains electrons during the reaction.

The Volume of 6.25 × \(10^{-4}\) ferroin solution is 0.4 ml.

To calculate dilution we use the formula,

                                 M1 × V1   =   M2 × V2    → 1

where,     M1, M2   =   molarity of the solutions

                 V1, V2   =   volume of the solutions  

As per the given question,

Substitute the values M1, M2, V1 and V2 in 1,

⇒      M1 × V1   =   M2 × V2

⇒      2.50 × \(10^{-5}\)  × 10   =     6.25 × \(10^{-4}\)  × V2

⇒      V2   =     2.50 × \(10^{-5}\)  × 10 / 6.25 × \(10^{-4}\)

⇒      V2   =    2.50 × \(10^{4}\) × 10 / 6.25 × \(10^{5}\)

⇒      V2   =    25 × \(10^{4}\) / 6.25 × \(10^{5}\)

⇒      V2   =    250000 / 625000

⇒      V2   =    0.4

Therefore, The volume of 6.25 × \(10^{-4}\) ferroin solution needs to be added to a 10ml volumetric flask in order to prepare a calibration solution with a concentration of 2.50 × \(10^{-5}\) is  0.4 ml.

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The concentration of a 180 mosm nacl solution in terms of its osmotic pressure is:0.154 g/L.

Concentration (g/L) = Osmotic Pressure (mosm/L) / (Van't Hoff factor * R * T)

Where R is the gas constant (8.31 J/mol K), T is the temperature in Kelvin (273.15 + °C), and Van't Hoff factor is the number of particles that a solute molecule dissociates into in solution (for NaCl, it is 2).

So, the concentration of a 180 mosm NaCl solution can be calculated as follows:

Concentration (g/L) = 180 mosm / (2 * 8.31 J/mol K * (273.15 + 25) K)

Concentration (g/L) = 180 mosm / (2 * 8.31 J/mol K * 298.15 K)

Concentration (g/L) ≈ 0.154 g/L.

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A flask is 47.392 g when empty & 47.816 g when filled with acetone vapor at 100 °C and 745 mm Hg.

A flask is 47.392 g when empty & 47.816 g when filled with acetone vapor at 100 °C and 745 mm Hg.

What is the molar mass of the acetone if the flask has a 247.3 mL volume?

What is the molar mass of the acetone if the flask has a 247.3 mL volume?

(R = 0. To answer this question, we can find the acetone's molar mass.

So, we must determine the mass of acetone, which is equal to the master of the flask when it is filled with acetone, which is 47.816 g less the mask of the flask. When it is empty, it is 47.392 grams. This is equivalent to 2.4 to 4 g.

The ideal gas equation Next, solve the gas laws for a mole of acetone, which is equal to force times space equals ideal gas temp. Given here is a pressure of 7 45 H G as this is a vaporizing asset.

One atmosphere, size 760 mm H G, was extant while writing this. One liter is equal to 1000 ml is when capacity of 247.3 M. L is split by these. calculated as follows:.08-0 21 later air per mole Calvin Also, the temperature ranged from 73.15 to plus 100. A mole of acetone is 7.91 times that much in this case. After that, find the molar mass at -3 mol. It was indeed overly much. It's was obtained by dividing by the process of acetone exchange. 4-4 g of pressure then is derived for a mole of acetone.

It was too sticky Divided using the process of acetone replacement, we obtained this. 4-4 g Muller divided the mold, that is 7.91 time and rises to -3 mol. Acetone's molar mass in Sequels is therefore 53.6 grams per mole. 0821L.atm/mol.K)

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Answer:

There are two chloride ions for each calcium ion

Explanation:

The compound has to have an overall neutral charge. Meaning that the positive charges from calcium have to be canceled out by the negative charges of chlorine.

If there are two chloride ions for each calcium ion, the charges would cancel themselves out (2 * -1 would cancel out with +2).

The type of intermolecular force that causes the dissolution of KI in water is ion-dipole force.

Potassium iodide (KI) dissolves in water predominantly as a result of ion-dipole interactions. In water, KI breaks down into K+ and I- ions, and these ions are drawn to the partial charges on the water molecules by the dipole moment of their ions. The partial negative charges on the oxygen atoms of water molecules attract the positive K+ ions, whereas the partial positive charges on the hydrogen atoms of water molecules attract the negative I- ions. This causes the KI to dissolve in the water. Ion-dipole interaction predominates over other intermolecular forces like hydrogen bonding and dipole-dipole forces, however these may still exist.

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The enthalpy change(δH) for the reaction at -79.0 °C is -769.98 kJ.

To solve this problem, we will use the following equation:

ΔH = ΔH° + CpΔT

where ΔH is the enthalpy change at the new temperature,

ΔH° is the enthalpy change at the standard temperature (in this case, 164.4 °C),

Cp is the heat capacity of the system,

ΔT is the difference in temperature.

δH = -833.32 kJ = -833,320 J
δH° = 866.05 J/K

Calculating the heat capacity, Cp:

Cp = (ΔH - ΔH°) / ΔT

Cp = (-833,320 J - 866.05 J/K x 164.4 K) / (164.4 - (-79.0)K)

Cp = -834,186.58 J/K

Use the same equation to find the enthalpy change at the new temperature:

ΔH = ΔH° + CpΔT

ΔH = -833,320 J + (-834,186.58 J/K x (-79.0 - 164.4))

ΔH = -769,982.69 J

Convert this value back to the original units:

δ = ΔH / 1000 = -769.98 kJ

Therefore, the reaction's enthalpy change at -79.0 °C is -769.98 kJ.

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Answer:

Below:

Explanation:

Instead of a single, centralized brain, jellyfish possess a net of nerves. This “ring” nervous system is where their neurons are concentrated—a processing station for sensory and motor activity. These neurons send chemical signals to their muscles to contract, allowing them to swim.

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It's Muska

The molecular geometry of silicon dioxide is linear and bonding in it  is covalent due to which it is a suitable material for making welding blankets.

Molecular geometry is  defined as a three -dimensional arrangement of atoms which make up  the molecule.It includes parameters such as bond length,bond angle and torsional angles.

It influences many properties of molecule such as 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.

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Answer:

133.333333333 cm^3

Explanation:

Volume = Mass/Density

Answer:

Proteins are made up of 20 amino acids. How an Isotope Technique Helps Determine Protein Quality. However be produced by the body and therefore are participated in the labelling process.

Explanation:

Answer:

A calcium ion will form a 1+ charge because it will have more protons than electrons.

Explanation:

Electrons have negative charges

Protons have positive charges

Calcium likes to lose its extra electron to achieve an octet outer shell and be "happy".

Answer:

A big load of icecream/ loaded cake.

Explanation: