How much nitrogen is needed to form 1. 4 mol of ammonia

Answer: decomposition

Explanation: one molecule forms tro molecules

The Tables that clearly show what you have learned in this lab:

Data is described as a collection of discrete values that convey information, describing the quantity, quality, fact, statistics, other basic units of meaning, or simply sequences of symbols that may be further interpreted.

In most cases,  we can also  use a dichotomous key as it helps in the  classification of  objects by sorting it out with Yes and No questions, until every object is single.

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The arrangement of the molecules in order of lowest to highest polarity is:  N₂, OI₂, and NH₃.

Polarity in molecules of substances has to do with the difference in charge distribution in the molecules of substances as a result of the differences in the electronegativities of the atoms involved in the formation of the covalent bond.

When atoms with differences in electronegativity values combine to form covalent bonds, the electrons shared in the covalent bond are found more within the orbit of the more electronegative atom than the less electronegative atom.

Considering the given molecules:

The molecule with lowest polarity is N₂ since similar atoms are form the covalent bond.

The next molecule with a higher polarity is OI₂ since there is slight electronegativity difference,

The molecule with the highest polarity is NH₃ as a result of greater electronegativity differences.

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The energy level of electronic transition can be predicted using Rydberg formula. Using this formula the energy level of electron will be n = 3 after the  absorption of a photon of wavelength 101.57.

Electrons from lower energy level transits to higher energy levels by absorbing energy. But they are not stable in the excited state and thus return to the ground state by emitting the absorbed energy.

Let n1 be the ground state and n2 be the excited state and the Rydberg constant is 1.097 × 10⁷ m⁻¹. Then the Rydberg formula for a wavelength lambda is written as:

\(\frac{1}{\lambda} = 1.09 \times 10 ^{7} [\frac{1}{n1^{2}} -\frac{1}{n2^{2}}]\)

Apply these values for the ground state of hydrogen atom that is n1 =1,

1/(102.57 × 10⁻⁹ m) = 1.097 × 10⁷ m⁻¹ [1 - 1/n2²]

  n2² = 9

   n2 = 3.

Therefore, the electron will move on n= 3 level of energy.

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The true statement about the balanced equations for nuclear and chemical changes is; both are balanced according to the total mass before and after the change.

A basic law in science is called the law of conservation of mass. Its general statement is that mass can neither be created nor destroyed.

Both in chemical and nuclear changes, mass is involved and in both cases, the law of conservation of mass strictly applies.

This means that for both chemical and nuclear changes; total mass before reaction must be equal to total mass after reaction.

Hence, both reactions are balanced according to the total mass before and after the change.

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Answer:

last option. A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change.

Explanation:

took the test.

Mt. Whitney has the second lowest elevation .

Low altitude means any elevation equal to or less than 1219 meters

(4000feet) .

Mt. Whitney is located at the southeastern end of the Sierra Nevada. It is only 85 miles northwest from badwater Basin in death valley,which at 86 meters below at sea level is the lowest point in all North America.

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Answer:

Oil

Explanation:

Answer:

The activation energy of a reaction can be related to the reaction rate constant using the Arrhenius equation:

k = Ae^(-Ea/RT)

Where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature in Kelvin.

By rearranging the equation, we can find the temperature needed to double the rate constant:

T = (-Ea/R) * (ln(2k/A))^-1

We know k at 30°C, k = 0.0190 s^-1 and Ea = 48.8 kJ/mol, so we can substitute these values:

T = (-48.8 kJ/mol / 8.31 J/mol*K) * (ln(2 * 0.0190 s^-1 / A))^-1

Since we don't know the value of A, we cannot find an exact temperature. However, we can use the approximation that the pre-exponential factor is constant over a small range of temperatures and calculate a rough estimate.

Based on this, we can conclude that the reaction would go twice as fast at a higher temperature than 30°C.

The temperature at which the reaction would go twice as fast is approximately 47°C.

The rate constant of a reaction is given by the Arrhenius equation:

k = Ae^(-Ea/RT)

where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the absolute temperature in Kelvin.

We are given the activation energy of the reaction as 48.8 kJ/mol and the rate constant at 30°C (which is 303 K) as 0.0190 s^-1. Using this information, we can calculate the pre-exponential factor A:

A = k e^(Ea/RT)

= 0.0190 s^-1 e^(48.8 kJ/mol / (8.314 J/mol*K * 303 K))

= 1.74 x 10^12 s^-1

Now, we want to find the temperature at which the reaction would go twice as fast. Let's call this temperature T'. We can use the Arrhenius equation again with this new temperature and twice the rate constant (i.e., 2k):

2k = A e^(-Ea/RT')

=> ln(2k) = ln(A) - Ea/RT'

=> ln(2k) - ln(A) = -Ea/RT'

=> T' = -Ea / (R * (ln(2k) - ln(A)))

Plugging in the values we have calculated, we get:

T' = -48.8 kJ/mol / (8.314 J/mol*K * (ln(2 * 0.0190 s^-1) - ln(1.74 x 10^12 s^-1)))

= 320 K

Converting this to Celsius, we get:

T' = 320 K - 273.15

= 46.85°C

Therefore, the temperature at which the reaction would go twice as fast is approximately 47°C.

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Answer:

1

Explanation:

By observing the appearance (colors, textures, etc.) of the reactants in the data one reactant is there.

A reactant is a substance or can say a chemical compound that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products.

For example we take a reaction-

O₂(g) + H₂(g) → H₂O(g)

Here, O₂ and H₂ are the reactants and H₂O is the product.

A reactant is present 100% initially and after sometimes it reduces gradually to form product according to chemical kinetics.

Given, the picture shown and the colour and texture of the reactant is shown.

Therefore, By observing the appearance (colors, textures, etc.) of the reactants in the data one reactant is there.

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Answer:

fsdafdsafdsafdsafdasfsagfd

Explanation:

Answer:

The type of bonding that occurs between metals and non metals is ionic bonding,so the type of bond between Na and Br is an ionic bond

Answer:

Antoine Laurent Lavoisier (1743 -94), a French chemist was the first to establish an experimentally useful definition of an element. Elements can be normally divided into metals, non metals and metalloids.

The comparison of the potential energy of the cars if they are stopped at points A to point D is C. Potential energy is stored energy, point D is taller so it has more stored energy.

Potential energy is the energy held by an object as a result of its position relative to other objects, internal stresses, electric charge, or other factors. Because any object lifted from its resting position has stored energy, it is referred to as potential energy because it has the potential to do work when released.

Kinetic energy is the energy that an object has as a result of its movement. If we want to accelerate an object, we must apply force to it. Using force requires us to put in effort. After work is completed, energy is transferred to the object, and the object moves at a new constant speed.

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The roller coaster is your favorite ride! but the line is always long! having just studied potential and kinetic energy in physics, you evaluate the energy changes of the cars as they move on the tracks. Compare the potential energy of the cars if they are stopped at points A to point D.

A. Neither have potential energy.

B. The potential energy is the same.

C. Potential energy is greatest at point D.

D. Potential energy is greatest at point A.

To determine the precise number of CO2 molecules formed in a reaction, it is necessary to consider the specific reactants involved and their stoichiometry in the reaction equation.

Each reaction has its own unique balanced equation, which provides the ratio of reactants and products. However, it is generally true that in combustion reactions involving hydrocarbons or carbon-containing compounds, a significant amount of CO2 is typically produced. This is because the complete combustion of these substances involves the oxidation of carbon atoms, resulting in the formation of CO2.

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Chloroform's normal boiling point is 335 K given that the standard enthalpy of vaporization of chloroform is 31. 4 kj/mol and the standard entropy of chloroform is 93. 7 j/mol·k.

What function does chloroform serve?

A chemical known as a solvent, or one that facilitates the dissolving of other substances, is formaldehyde. Along with being used in the building, paper, and board industries, it is also used in the production of insecticides and films.

Given, 31.4 kJ/mol is the vaporisation enthalpy.

The standard entropy is 93. 7 j/mol k.

At equilibrium (when the liquid is boiling), according to the Gibbs free energy equation,

G = H - T (S), therefore

T (S) = H

S = H / T

93.8 = (31400 J/mol.) / T

T = 334.7 = 335K.

Chloroform has a 335K boiling point as a result.

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(c)The number of moles of  Na₂CO₃ , in the original 50ml of solution is  0.0093 moles Na₂CO₃ is present.

(d) Disagree, if grams of CaCO₃ is inflated by being wet Na₂CO₃ is inflated and inflating the molarity value.

(e) After the precipitate form and is filtered, the soluble spectator ions removed. I expect that the filtrate conduct electricity.

The balanced equation is given by :

Na₂CO₃  +   Ca(NO₃)₂   ------->    CaCO₃   +    2NaNO₃

(c) no. of moles of Na₂CO₃  =  ?

mole of Ca(NO₃)₂ = 100 ml = 0.1 L × 1mol/L = 0.1 moles of Ca(NO₃)₂

moles of CaCO₃  formed = mass / molar mass

                                        = 0.93 g / 100 g/mol

                                         =  0.0093 mols

from reaction it is clear that , Na₂CO₃ and Ca(NO₃)₂ is in 1:1 ,

one mole  CaCO₃ obtain from 1 mole of  Na₂CO₃

so, no. of moles Na₂CO₃ is originally present originally:

=  0.0093 moles CaCO₃ × 1 moles of Na₂CO₃  /  1mol CaCO₃

=  0.0093 moles Na₂CO₃ is present.  

(d) Disagree, if grams of CaCO₃ is inflated by being wet Na₂CO₃ is inflated and inflating the molarity value.

(e) After the precipitate form and is filtered, the soluble spectator ions removed. I expect that the filtrate conduct electricity.

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The moderately reactive atoms located in the periodic table are fluorine, chlorine, bromine, and iodine which means the halogens family.

The number of balance electrons of the light metals compared to those heavier by listing elements in the order of increasing atomic number.

They are the five non-metals in family 7A of the periodic table. Halogens are chemical elements that form inorganic salts. In the periodic table they are part of group 17 or family 7A.

Halogens are strong oxidants and react mainly with alkali metals (Family I A) which tend to donate an electron. They also react with metals and noble gases (Family VIII A).

The chemical elements are arranged from left to right and top to bottom in order of increasing atomic number, or the number of protons in an atom's nucleus, which generally coincides with increasing atomic mass.

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What are halogen metals?

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Answer: This indicates a chemical reaction.

Explanation: The bubbles formed are a sign that a gas has formed.

Answer:

When zinc metal is reacted with hydrochloric acid, hydrogen gas is released and an aqueous solution of zinc chloride is produced. ... It is important that all of the zinc used be reacted and that large excess amounts of hydrochloric acid not be used.

Anhydrous zinc chloride is synthesized by treating zinc with hydrogen chloride. Whereas, hydrated and aqueous forms of zinc chloride are prepared by treating zinc with hydrochloric acid. Zinc metal could either be in the form of zinc sulfide or zinc oxide

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Answer: Anhydrous zinc chloride is synthesized by treating zinc with hydrogen chloride. ... Zinc metal could either be in the form of zinc sulfide or zinc oxide. ZnS(s) + 2 HCl(aq) → ZnCl2(aq) + H2S(g) There are impurities present in zinc chloride samples due to hydrolysis.

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Answer:

1

Explanation:

Octet meaning 8. So if chlorine already has 7 valence electrons it will only need to get 1 more to be satisfied.

If you were to spill a little benzoic acid as you mix it with the lauric acid, the calculated molecular weight would be too high.

This is because the amount of benzoic acid would be greater than the amount of lauric acid, and the molecular weight of benzoic acid is higher than the molecular weight of lauric acid.

The molecular weight of a substance is the sum of the atomic weights of the atoms that make up the substance. Benzoic acid has a molecular weight of 122.12 g/mol, while lauric acid has a molecular weight of 200.32 g/mol.

If you were to spill a little benzoic acid, the total amount of benzoic acid and lauric acid would be greater than the amount of lauric acid that would be present if no benzoic acid were spilled.

This would cause the calculated molecular weight to be higher than the actual molecular weight of lauric acid.

To avoid this, it is important to be careful when mixing benzoic acid and lauric acid. It is also important to use a balance that is accurate to at least 0.01 g to measure the amounts of benzoic acid and lauric acid.

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The similar first ionization energies of As and Se can be rationalized based on their electron configurations.

The electron configurations of As (atomic number 33) and Se (atomic number 34) are as follows:

As: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³

Se: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁴

Both elements have the same electron configuration up to the 4s² and 3d¹⁰ orbitals. The first ionization energy corresponds to the energy required to remove an electron from the outermost shell of an atom.

In the case of As, removing an electron from the 4p³ orbital requires breaking the stability of the half-filled p orbital, resulting in a relatively higher ionization energy.

For Se, removing an electron from the 4p⁴ orbital also requires breaking a stable configuration, but the removal of an electron from a fully filled orbital is slightly easier than from a half-filled orbital. Thus, Se has a slightly lower ionization energy compared to As.

Overall, the similar electron configurations of As and Se explain their comparable first ionization energies, with small differences due to the specific orbital configurations and stability considerations.

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Answer:

3846g of Carbon tetrachloride is in the chemical equation.

Explanation:

The Balanced equation is :

   CH4 + 4CL2 -> CCL4 + 4HCL

Converting grams to moles ;

  Moles of CL2 = Mass / Molar mass

  Molles of CL2 = 709.0g/70.906g/mol => 10 moles

  Moles  of CCL4 = Moles of CL2 / 4

  Moles of CCL4 = 10 moles/ 4 => 2.5 moles

Converting moles of CCL4 to grams:

 Mass of CCL4 = Moles of CCL4 x Molar mass of CCL4

 Mass of CCL4 = 2.5 moles x 153.823 g/mol => 384.5575 grams

Therefore 384.6 grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine.

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Benzene will boil at 333.2 K temperature when the external pressure is 405 torr.The correct option d.

Heat of vaporization (ΔHvap) of benzene, ∆Hvap = 30.72 kJ/mol.Normal boiling point of benzene, Tbp = 80.1°C.External pressure of benzene, P = 405 torr.

The formula for boiling point is given as follows:BP = [(ΔHvap / R) * ln(Po / P)] + Tbp,

where R is the gas constant and Po is the normal atmospheric pressure.As we can see, we have everything except the boiling point.

So, we can rearrange the above formula to solve for BP as follows:BP = [(ΔHvap / R) * ln(Po / P)] + Tbp. = [(30.72 × 10³ J/mol) / (8.314 J/(mol·K)) × ln(760 torr / 405 torr)] + 80.1°C= (30.72 × 10³ / 8.314 × ln (1.8765)) + 80.1°C= 353.2 K.

Therefore, the answer is D) 333.2 K.

Benzene will boil at 333.2 K temperature when the external pressure is 405 torr.

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The mass of carbon dioxide in this is 264 g according to the given data.

The molar mass is basically the total mass in grams of the atoms that make up a molecule per mole. Molar mass is measured in grams per mole.

Combustion is the process of burning glucose in the presence of oxygen.

The balanced reaction is

\(C_6H_1_2O_6+6O_2---- > 6CO_2+6H_2O\)

As a result, each mole of glucose requires six moles of oxygen molecules.

Glucose has a molar mass of 180g per mole.

As a result, the reaction will be completed, with one mole of glucose reacting with six moles of oxygen to produce six moles of Carbon dioxide and six moles of water.

Carbon dioxide produced mass = moles X molar mass = 6 x 44 = 264 g

Thus, 264g will be the mass of the carbon dioxide produced.

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Answer:

Multiply the length, width, and height together.

( length *, width *, height )

The answer to this is multiplication problem is the volume of the object.

Explanation:

- Do not measure the height of the entire container, just the height from one watermark to another.

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The options can not be found on the internet so i will provide overview on the great basin desert below;

The Great Basin Desert is a vast arid region located in the western United States, covering parts of Nevada, Utah, California, Oregon, Idaho, and Wyoming. It is named after the Great Basin, a region of relatively flat land surrounded by mountain ranges that drain internally.

The Great Basin Desert is characterized by a high elevation and a semiarid climate with hot summers and cold winters. The average annual precipitation in the region is low, ranging from 5 to 15 inches, and is highly variable from year to year. The desert is dominated by sagebrush and other shrubs, and it is home to a variety of animals, including mule deer, pronghorn antelope, coyotes

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a net ionic equation to show why solid potassium hydroxide, koH (s), forms a basic solution when it dissolves in water

Equation

KOH (s) [H2O ] →     K+(aq)+OH−(aq)

The Arrhenius theory, the Brnsted-Lowry theory, and the Lewis theory are the three ideas that have contributed to the definitions of acids and bases over time. According to Arrhenius, an acid is a chemical that, when ionised, releases protons (hydrogen ions) into the solution, whereas a base releases hydroxide ions.

According to Brnsted-Lowry, a base is a proton acceptor and an acid is a proton giver. According to Lewis, a base is an electron-pair donor, while an acid is an electron-pair acceptor

KOH satisfies the Arrhenius theory's definition of a base by producing hydroxide ions when ionised. The hydroxide ion is the base component from a Brnsted-Lowry perspective since it can accept a proton to create water. Although it is a little more difficult to understand from a Lewis perspective why this is a base, the oxygen in the hydroxide has three pairs of non-bonding electrons on it. When a proton (acid) is present, it lacks the electrons necessary to create a covalent link, therefore hydroxide donates an electron pair to the proton in order to build a coordinate covalent bond, which produces water. The three theoretical requirements for a base are thus satisfied by the aforementioned net ionic equation.

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The grams of magnesium hydroxide will precipitate if the 25 mL of 0.235 M magnesium nitrate are combined with the 30. 0 mL of 0.260 M potassium hydroxide is 0.227 g.

The reaction is given as :

Mg(NO₃)₂   +   2KOH  ---->  2KNO₃(aq)  +  Mg(OH)₂(s)

moles of Mg(NO₃)₂   = 0.235 × 0.025

                                  = 0.00587 mol

moles of KOH = 0.260 × 0.030

                        =  0.0078 mol

1 mole of Mg(NO₃)₂   react with 2 mole of KOH

mole of KOH = 0.0078 × 2

                      = 0.0156 mol

KOH is the limiting reagent.

2 mole of KOH  produces 1 mole of Mg(OH)₂

mole of Mg(OH)₂ =  0.0078 / 2 = 0.0039 mol

mass of Mg(OH)₂ = 0.0039 × 58.3

                             = 0.227 g

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The combination of isoclines that lead to competitive exclusion and competitive coexistence is the zero population growth isocline (ZPGI) and the resource axis (RA).Competitive exclusion and coexistence are both population dynamics terms.

Competitive exclusion is a situation whereby one species dominates a particular niche to the detriment of another species that requires the same resources. This occurs when the population of one species is larger than that of another in a given ecosystem .Competitive coexistence, on the other hand, is the opposite of competitive exclusion, where two or more species share the same niche or habitat and do not exclude one another. This is possible through resource partitioning, which occurs when species evolve different feeding behaviors or physical adaptations to consume different food types or occupy different areas in a shared ecosystem. Zero Population Growth Isocline (ZPGI) and the Resource Axis (RA) are the combination of isoclines that lead to competitive exclusion and competitive coexistence, respectively. They both play a significant role in population dynamics in ecology.

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