Pentane is a gas with a molar mass of 70.0 g/mol. At STP, a mole of a gas takes up 22.4 L of space. At STP, the gas has a density of 1.43 g/L. Gas in 22.4 L has a mass of 1.43 g/L22.
The Greek letter rho, or, is used to represent it. The temperature and pressure of the air affect the density of the air, or how light it is. The density of air is typically expressed as STP (standard temperature and pressure). One atmosphere of pressure at absolute zero is known as STP. Only links in the afflicted VLAN are impacted when the spanning tree failure is contained to a single VLAN.
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The molar mass of the particular gas is equal to 70.8grams /mole
The equation for the Ideal Gas Law is:
PV=nRT
where;
P is the pressure of the particular gas in atm
V is the volume in liters
n is the number of moles of the particular gas
R is a gas constant (0.082056 L-atm/mol-K)
T is the temperature in Kelvin
We can perform modification or rearrangement to the equation to equate density of the gas to its molar mass.
PV=nRT
PV=(mass/Molar mass)RT
Molar mass=(mass)×RT/PV
where mass over volume (m/V) is equal to density
The equation will become:
Molar mass=density ×RT/P
We can now substitute the given values to determine the molar mass of the particular gas. The temperature at STP condition is equal to 273.15 K while the pressure is equal to 1 atm.
Molar mass=density ×RT/P
Molar mass=(3.16×grams/L)×(0.082056×273.15)/(1atm)
Molar mass=70.8grams/mole
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How many different uncharged (neutral) stable hydrogen atoms can you build? In the space below, briefly describe the similarities and differences in their composition.
The number of different uncharged (neutral) stable hydrogen atoms which one can build is two and the similarity is that they both have a single proton while the difference is that one has a neutron while the other has zero neutron.
What is an Atom?This is referred to as the smallest particle of an element which can exist and has subatomic particles such as proton and neutron.
The different uncharged (neutral) stable hydrogen atoms which one can build include:
1p & 0n & 1e1p & 1n & 1eFrom this we can infer that they both have one proton and electron and one has no neutron while the other has just one.
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In three to five sentences, identify the type of bonding that would form between potassium (k) and chlorine (cl). Use electronegativity to justify this bond type. Provide the chemical formula for the resulting compound.
The chemical potassium chloride is created when one potassium ion and one chlorine ion interact in a specific ratio.
Chemical Compound: What is it?Chemical compounds are made up of several molecules, each of which is made up of an element and its constituent atoms in a specific ratio.
Covalent compounds and ionic compounds are the two different types of compounds. Ionic compounds are created by the total transfer of electrons, while covalent compounds are created by sharing electrons.
In response to our inquiry, sodium is a metal that may give an electron to chlorine in order to form an ionic bond. Because chlorine is more electronegative than sodium, it can easily absorb an electron from the latter.
The equation is balanced when
K⁺ + Cl⁻ → Kcl
Thus, it is clear from this that one potassium atom and one chlorine atom combine to produce the ionic compound potassium chloride.
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A measurement of the heat produced when a known amount of sugar burns in a constant volume calorimeter would enable us to first calculate the.
There is a molar internal energy change during sugar combustion. W = 0 for comb calorimeters since Delta V = 0 and Delta E = q + w. Delta then
E = q.
What makes water an ideal heat transmission medium in calorimetry?Due to its high specific heat capacity, water can absorb a lot of heat energy without boiling or even appreciably changing its temperature. This makes water a suitable medium for heat exchange in calorimetry.
Utilizing calorimetry, heat transport rates to or from a substance are determined. This is accomplished by transferring heat using a calibrated object (calorimeter). Utilizing the calorimeter's recorded temperature change allows us to determine how much heat the process under study transmits.
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a student performing this experiment started with a 0.384 g sample of cu wire, which was dissolved in concentrated nitric acid. after completing the series of reactions, the student isolated 0.367 g of cu. calculate the percent cu recovered by the student
95.57% is the percent Cu recovered by the student
What is nitric acid ?
Nitric acid (HNO3), a colorless, fuming, highly corrosive liquid (freezing point -42 °C [-44 °F], boiling point 83 °C [181 °F]). A chemical used in the manufacture of fertilizers and explosives. Toxic and can cause severe burns. The production and use of nitric acid was known to early alchemists. A long-used experimental procedure attributed to the German chemist Johann Rudolf Glauber (1648) was to heat potassium nitrate with concentrated sulfuric acid. , Joseph Louis Gay-Lussac and Claude-Louis Berthollet established its chemical composition.
percentage of cu recovered = isolated cu / sample of cu = 0.367/0.384=95.57 %
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Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?
The ionization energy decreases because the ratio of the protons to electrons increases.
The ionization energy increases because the ratio of the protons to electrons increases.
The ionization energy decreases because the ratio of the protons to electrons decreases.
The ionization energy increases because the ratio of the protons to electrons decreases.
The following explains the change in ionization energy that occurs between removing the first and second electrons from an atom:-
The ionization energy increases because the ratio of the protons to electrons increases.
Ionization energy, also called ionization potential, in chemistry and physics, the amount of power required to dispose of an electron from an isolated atom or molecule.
Ionization energy is positive for impartial atoms, that means that the ionization is an endothermic process. Roughly talking, the closer the outermost electrons are to the nucleus of the atom, the better the atom's ionization strength. In physics, ionization strength is normally expressed in electronvolt or joules.
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Answer: B)
Explanation:
Which ONE of the following objects is accelerating?
Read over each answer choice carefully before choosing one.
A sign is hanging on a pole in front of a shop
A car is sitting still at a stop light. It's current speed is 0 mph
A skydiver falling down towards Earth opens their parachute, causing them to
slow down from 50 m/s to 2 m/s
A lion walks East across the savannah at a speed of 5 miles per hour
Option a is correct choice a sign is hanging on a pole in front of a shop Because hanging object has gravitational acceleration.
Is the acceleration of 9.8 gravitational?9.8 m/s/s is the most precise measurement of the gravitational acceleration. This number (to the second decimal place) exhibits a small range that is primarily influenced by altitude.
The term "gravitational acceleration," abbreviated "g," is used in physics to describe the strength of a gravitational field. Meters per second squared (m/s 2) is the unit of measurement. 1 g is approximately 9.8 m/s 2 at the earth's surface.
Newton's universal law of gravitation states that the force of attraction between any two bodies is inversely proportional to the square of the distance between them and directly proportional to the product of their masses.
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Series circuits are used in ___________ and some holiday lights.
Series circuits are mainly used in home appliances. They are also used batteries of some electrical devices other than in holiday lights.
What is series circuits?In a series circuits, the electrical components are connected in a series thus in a back to back connection. For example the light bulbs where the second leg of the first bulb is is connected to the first leg of the second bulb and so on.
Resistors are used here to control the current flow and they are also connected in a series fashion. The sum of voltage drops for all the components will be equal to the source voltage. Here we can apply the Ohm's law.
Ohm's law states that the voltage is the product of current and resistance. Series circuit is also used in batteries and in other households such as in refrigerators.
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24 g of methane were burned in an excess of air. What mass of water would be produced in the reaction assuming complete combustion?.
If 24 g of methane were burned completely in too much air, the reaction would result in the production of 54 g of water. Since methane is both the simplest form and the simplest alkane of hydrocarbons.
It is crucial to understand the characteristics of such a novel chemical, saturated hydrocarbons. The following list of methane's key characteristics includes: Methane's chemical structure is CH4. With a specific gravity of 0.554, methane gas is lighter than air.
An organic substance called a hydrocarbons is made completely of hydrogen and carbon. Group 14 hydrides include things like hydrocarbons.
(18 g H2O/mole H2O) * (2 moles H2O/mole CH4) * (1 mole CH4/16 g CH4) * (24 g CH4) = 54 g H2O.
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Help me out asp please thank you
Ca & 2[tex]H_{2}[/tex]O are the reactants in above equation.
What is reactants ?Reactants are the substance(s) in a chemical equation to the left of the arrow. A component that is present at the outset of a chemical reaction is known as a reactant. Products are the substance(s) to the right of the arrow. A material that remains after a chemical reaction is complete is known as a product. The reactants in the equation above are zinc and sulfur, which mix chemically to create the zinc sulfide product.Chemical equations can be written in a specific form. The equation's left side is filled with the reactants, and its right side is filled with the products. An arrow designating the direction of the reaction points from the reactants to the products:reactants→products
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gaseous butane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of carbon dioxide is produced from the reaction of of butane and of oxygen gas, calculate the percent yield of carbon dioxide.
Gaseous butane [tex](CH3(CH2)2CH3)[/tex]reacts with gaseous oxygen (O2) to produce gaseous carbon dioxide [tex](CO2)[/tex] and gaseous water [tex](H2O)[/tex]. If [tex]0.256 g[/tex] of water is produced from the reaction of [tex]1.2 g[/tex] of butane and [tex]1.6 g[/tex]of oxygen, So far i have balanced the equation to be [tex]2 (CH3(CH2)2)CH3) + 13 O2 > 8 CO2 + 10 H2O[/tex]
what is reaction yield?
The reaction yield (absolute yield) of a chemical reaction is the amount of pure and dry product yielded in a reaction. Normally, in order to measure the efficiency of a chemical reaction in organic synthesis, the relative or percentage yield (%) is calculated.To express the efficiency of a reaction, you can calculate the percent yield using this formula: %yield = (actual yield/theoretical yield) x 100. A percent yield of 90% means the reaction was 90% efficient, and 10% of the materials were wasted (they failed to react, or their products were not captured).The percentage yield of a chemical reaction is an important consideration in industrial chemistry. It can be calculated to compare the yield (quantity) of product actually obtained with what could have been obtained in theory, if all of the reactants were converted with no loss or waste.Theoretical yield is what you calculate the yield will be using the balanced chemical reaction. Actual yield is what you actually get in a chemical reaction. Percent yield is a comparison of the actual yield with the theoretical yield.to determine the percent yield: Divide the actual yield made in the lab by the calculated theoretical amount, and multiply by 100. For a synthesis – to find the overall percent yield, multiply the individual percent yields of every step by each otherto know more reaction yield about follow
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a 97.0 ml aliquot of a 0.400 m stock solution must be diluted to 0.100 m. assuming the volumes are additive, how much water should be added?
a 97.0 ml aliquot of a 0.400 m stock solution must be diluted to 0.100 m. assuming the volumes are additive.388mL water should be added
What is a stock solution?A particular kind of homogenous mixture made up of two or more substances is known as a solution. A solute is a substance that has been dissolved in a solvent, which is the other substance in the mixture. Chemical polarity effects are engaged in the mixing of a solution at a scale that leads to interactions that are unique to solvation. When the solvent makes up a significant portion of the combination, as is frequently the case, the solution typically has the condition of the solvent. The concentration of a solution, which measures how much solute is present in a specific volume of solution or solvent, is one crucial parameter. When water is one of the solvents, the phrase "aqueous solution" is used.
By using the law of equivalence
M1 V1= M2V2
aliquot=stock solution
97.0 x 0.400 = 0.100 x V2
V2=388mL
388mL water should be added.
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what is the molarity of a hcl solution if 2.50 l is needed to reacted with 12.7 g of al according to the reaction?
The molarity of a HCl solution if 2.50 l is needed to reacted with 12.7 g of al is 5.08 M
What is molarity ?A chemical species' concentration in a solution, specifically the quantity of a solute per unit volume of solution, is measured by its molar concentration.
The number of moles per liter, denoted by the unit sign mol/L or mol/dm3 in SI units, is the most often used unit denoting molarity in chemistry.
Molarity is the number of moles of solute per liter of solution. Mole fraction is the proportion of solute moles to all other moles of substances present. Parts per thousand. grams is mass percentage, the ratio of the solute's mass to the solution's mass multiplied by 100.
Molarity ( M ) = 12.7 mol H₂SO₄ / 2.50 L
= 5.08 M
Thus, the molarity of a HCl solution if 2.50 l is needed to reacted with 12.7 g of al is 5.08 M.
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the values of equilibrium constants for weak acids are typically small numbers, i.e. much less than 1. for example, the ka value for acetic acid is 1.8 x 10-5 or 0.000018. why are ka values for weak acids so small?
The Ka values for weak acid is so small due to Option A and C.
Strong acids must dissociate more strongly in water. In contrast, weak acids are less likely to ionize and release hydrogen ions resulting in less acidic solutions. This equation reveals that the higher the acid is converted from its original form to the ionized dissociated form the higher the Ka value.
A small equilibrium constant or Keq less than 1, means that the chemical reaction favors the reactants and the reaction is proceeding in the opposite direction. An equilibrium constant of 1 indicates that the reactants and products are equal when the reaction reaches equilibrium. Weak acids are only slightly ionized. The acid ionization constant is the equilibrium constant for acid ionization.
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Compare and contrast the structure and. Function of hydrostatic skeletons and exoskeletons
Hydrostatic skeletons are composed of a body cavity that is filled with an aqueous solution, while exoskeletons are external body structures composed of a rigid protein material such as chitin.
What are hydrostatic skeletons and exoskeletons?Hydrostatic skeletons such as those observed in flatworms and annelids are composed of a versatile cavity that is filled with water, while exoskeletons such as those observed in insects are not filled with water because they form the outermost layer of the body.
Therefore, with this data, we can see that hydrostatic skeletons and exoskeletons have distinct structures and they are found in different taxonomic groups.
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g explain how to calculate an rf value and what that information can tell you about the success of your reaction. was your guaifenesin synthesis successful?
RF value is qual to the distance travelled by solute over the distance travelled by the solvent.
RF value or the retention value is a physical constant that helps to identify the distance travelled by different solutes that are present in the same solution. This method is generally used in chromatographic techniques, to record the progress of any particular reactions occurring.
In Chromatography RF values are the most basic prerequisite of the experiment. The values that we get from the RF values indicates whether the solute prefers the stationary or mobile phase. With these stationary or mobile phases, RF values are used to determine the polarity, relative masses and also relative stability among other things.
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which question(s) can be answered from an integrated rate law that cannot be answered by other forms of the rate law? select all that apply.
The question can be answered from an integrated rate law that cannot be answered by other forms of the rate law is 1) how long it will take to use x moles per liter [A] 2) what is [A] after y minutes of reaction.
The rate law defines the relation in between rate and the concentration of the reactants. The integrated rate law describes the reaction at a specific time.
Thus, The question can be answered from an integrated rate law that cannot be answered by other forms of the rate law is 1) how long it will take to use x moles per liter [A] 2) what is [A] after y minutes of reaction.
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The diagram above shows the repeating groups of atoms that make up two samples. Both samples are green gases at room temperature. Will the other properties of the two samples be the same or different?
It is important to note that the properties of the green gas of the sample can remain the same because the repeating groups of atoms that make up the sample have an identical quantity of atoms and an identical temperature.
What is green gas?Greenhouse gases are defined as gases that absorb and emit radiant energy in the thermal infrared spectrum, causing the greenhouse effect. The following according to scientific studies account for the primary or key greenhouse gases in the atmosphere of the earth:
Water vaporcarbon dioxidemethanenitrous oxide, and ozoneNote as well that one of the four basic forms in which matter exists is gas. A pure gas can be composed of individual atoms, elemental molecules composed of one kind of atom, or complex molecules composed of many atoms. A gas mixture, such as air, comprises a variety of pure gases.
Gas contracts when pressure is applied to it. When the pressure is discharged, expansion occurs with the gas.
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The decomposition of potassium chlorate gives oxygen gas according to the
reaction:
2KCIO3(s)→2KCl(s) + 30₂(g)
How many grams KClO3 are needed to produce 5.00 L of O₂ at STP?
Ideal gas law is valid only for ideal gas not for vanderwaal gas. 6.4g of KClO[tex]_3[/tex] are needed to produce 5.00 L of O₂ at standard temperature and pressure.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature.
Mathematically the relation between Pressure, volume and temperature can be given as
P×V=n×R×T
where,
P = pressure of oxygen gas= 1 atm
V= volume of oxygen gas = 5.00 L
n =number of moles of oxygen gas =?
T =temperature of oxygen gas =298K
R = Gas constant = 0.0821 L.atm/K.mol
Substituting all the given values, we get
1 atm×5.00 L=n× 0.0821 ×298K
n=5.00÷24.4=0.20moles
mass of oxygen= number of moles of oxygen× Molar mass of oxygen
mass of oxygen=0.20× 32
mass of oxygen=6.4g
Therefore, mass of KClO[tex]_3[/tex] needed is 6.4g.
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Which of the following is the end product of a natural radioactive series?
A. Stable isotopes of iodine
B. Stable isotopes of lead
C. Bismuth
D. Thorium
Answer:
Bismuth
Explanation:
The decay constant of the end product of natural radioactive series is zero because at the end of the radioactive decay, the product formed is a stable one and will not undergo any further decay in the future.
drag and drop each of the following conditions so that it matches up with the type of shift it would create in the oxygen-hemoglobin dissociation curve.
Left Shift: Lower temperature, lower 2,3-BPG concentration, lower PCO2 levels, higher pH. Right Shift: Increasing PCO2, increasing 2,3-BPG concentration, lowering pH, and raising temperature .
Explain what temperature is.Temperature is a unit used to represent hotness or coolness on any of a number of scales, including Fahrenheit and Celsius .Heat energy will logically go from a hotter (body with a higher temperature) to a colder (body with a lower temperature) according to temperature (one at a lower temperature).
What is the temperature unit?According to the International System of Units, Kelvin, which is denoted by the letter K, is the SI unit of temperature .The Kelvin scale is widely recognized or used in the scientific and technical disciplines. To measure temperature, however, the majority of the globe uses the Celsius or Fahrenheit scale.
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explain why the intermolecular force is always stronger at the surface of a liquid than in the middle of the liquid.
during one of the trials in this project, the initial weight of ethanol is 77 g and after the combustion, the final weight of ethanol is 10. what are the number of moles of ethanol consumed during the experiment? the molar mass of ethanol is 46.07 g/mol. report and round your answer to the first decimal place.
The number of moles of ethanol consumed during the experiment is
The combustion reaction is given as :
C₂H₅OH + 3O₂ -----> 2CO₂ + 3H₂O
the initial weight of ethanol = 77 g
the final weight of ethanol is = 10 g
initial moles = mass / molar mas
= 77 / 46.07
= 1.67 g
final moles = mass / molar mass
= 10 / 46.07
= 0.21 mol
the moles consumed = 1.67 - 0.21 = 1.46
thus, during one of the trials in this project, the initial weight of ethanol is 77 g and after the combustion, the final weight of ethanol is 10. the number of moles of ethanol consumed during the experiment. the molar mass of ethanol is 46.07 g/mol is 1.46 mol
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What can dehydration lead to?.
Dehydration can range from mild to severe, depending on how much fluid you lose from your body. Thirst and black urine are two early indicators of dehydration. The body is attempting to enhance water intake and reduce water loss by doing this.
Other signs can include:
a feeling of faintness or dizzinessheadache fatiguedry eyes, lips, and mouth, and infrequently passing little volumes of the urine (less than three or four times a day)Strength and stamina can also be lost as result of dehydration. It is a major contributor to heat exhaustion.By consuming extra liquids, you should be able to reverse dehydration at this point.Chronic dehydration can affect your kidney function and raise your risk of kidney stones. In addition, it can also lead to the muscle damage and constipation.
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which of the cardinal principles of radiation protection is most effective in reducing exposure to the technologist during fluoroscopy?
When it comes to minimizing radiation exposure to the technician during fluoroscopy, distance is the fundamental rule of radiation safety.
Which of the following radiation protection ideas is used in the fluorescence imaging room?Anyone standing in the room during the procedure should wear lead aprons, lead barriers, and thyroid shields. By doing this, it will be made sure that both employees and spectators are shielded from the patient's scatter radiation.
Why do lead aprons exist?Everyone in a fluoroscopy room should wear a lead apron, which is the most efficient personal radiation protection method (except the patient). Depending on the energy of the X-rays (kV setting) and the lead equivalent thickness of the apron, lead aprons may reduce the dose received by more than 90% (85%-99%).
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Calculate the ph of a dilute solution that contains a molar ratio of potassium acetate to acetic acid (pka = 4. 76) of 2:1.
A solution with a molar ratio of potassium acetate to acetic acid has a pH of 5.061.
Describe acetic acid.Acetic acid, which has the formula CH3COOH, is also known as ethanolic acid, ethylic acid, vinegar acid, and methane carboxylic acid.
Acetic acid, a byproduct of fermentation, is responsible for vinegar's distinctive scent. 4-6% of the acetic acid in vinegar is made up of water.
Acetic acid is a colorless, acidic organic molecule having the chemical formula CH3COOH. Its official name is ethanoic acid. Acetic acid constitutes at least 4% of the volume of vinegar, making it the main ingredient, along with water and other minor components.
pH pKa log
pH 4.76 log ([acetate]/[acetic acid]),
pH = pka + log [acetate/acetic acid]
pH = 4.76 + log ( 2/1)
pH = 4.76 + 0.301
pH = 5.061
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which of the following will change the value of an equilibrium constant? changing temperature. adding other substances that do not react with any of the species involved in the equilibrium. varying the initial concentrations of reactants. varying the initial concentrations of products. both (a) and (c)
Answer: The only thing that changes an equilibrium constant is a change of temperature.
Explanation:
The position of equilibrium may be changed if you change the pressure. According to Le Chatelier's Principle, the position of equilibrium moves in such a way as to tend to undo the change that you have made.
what phase change occurs at temperatures below the boiling point and only at the surface of a liquid?
Answer: evaporation
Explanation:
why are bond angles sometimes slightly less than predicted in actual molecules as compared to what is predicted by the vsepr model?
Bond angle occasionally deviates from what would be predicted by VSEPR theory due to repulsion between the lone pair and bond pair. and geometries are changed by the presence of lone pairs.
What is VSEPR model?
Chemistry uses the valence shell electron pair repulsion (VSEPR) theory as a model to forecast how each individual molecule would look based on how many electron pairs will be surrounding its center atom. The two principal creators of the theory, Ronald Gillespie and Ronald Nyholm, gave it the additional moniker Gillespie-Nyholm theory.
The valence electron pairs that surround an atom have a tendency to oppose one another, thus they will arrange themselves in a way that minimizes this repulsion, according to the premise of VSEPR. The molecular shape is thus determined by a decrease in the energy of the molecule and an increase in its stability. According to Gillespie, the electron-electron repulsion resulting from the Pauli exclusion principle is more crucial than the electrostatic repulsion in establishing the molecule geometry.The VSEPR Model's electron groups could have lesser symmetry if one or more of them are lone pairs. The bond angles in this situation typically differ slightly from those for highly symmetric molecules.Thus, bond angle occasionally deviates from what would be predicted by VSEPR theory due to repulsion between the lone pair and bond pair. and geometries are changed by the presence of lone pairs.
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A scuba diver 40 ft below the ocean surface inhales 95.0 mL of compressed air from a scuba tank at a pressure of 2.90 atm and a temperature of 9 ∘C. What is the pressure of the air, in atm , in the lungs when the gas expands to 195.0 mL at a body temperature of 37 ∘C , and the amount of gas remains constant?
1.553 atm is the pressure of the air, in atm , in the lungs when the gas expands to 195.0 mL at a body temperature of 37 ∘C , and the amount of gas remains constant.
V1=95 ml
P1=2.90 atm
T1=282 K
V2=195 ml
T2=310 K
by applying ideal gas equation
P1V1÷T1=P2V2÷T2
P2=P1×V1×T2÷V2×T1
P2= 85405 ÷54990
P2=1.553 atm
The definition of pressure is force/area. For instance, the weight of the snow divided by the area of the roof would represent the pressure from snow on a roof. Gases are often where pressure in chemistry originates from. Vacuum is the term for the lack of pressure. Since "nature abhors a vacuum," humans have believed that vacuums are both impossible and unnatural for hundreds of years. This isn't really the case.
The amount of pressure units is insane! The torr or mmHg is a common unit. Simply put, this refers to the height of a mercury column. The atmospheric pressure is about 760 torr, or mmHg. You may also see mmH2O, which employs the same notion, but in this instance the atmospheric pressure is around 10.3 mH2O since water is less dense than mercury.
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which element has the ground-state electron configuration 1s22s22p3? multiple choice question. n b o c
The element has the ground-state electron configuration 1s² 2s² 2p³ is nitrogen.
The electronic configuration for given element is given as follows :
1) Nitrogen : the atomic number of the nitrogen is 7.
electronic configuration : 1s² 2s² 2p³
2) Boron : the atomic number of the boron is 5.
electronic configuration : 1s² 2s² 2p¹
3) Oxygen : the atomic number of the oxygen is 8.
electronic configuration : 1s² 2s² 2p⁴
4) Carbon : the atomic number of the carbon is 6.
electronic configuration : 1s² 2s² 2p²
Thus, The element has the ground-state electron configuration 1s² 2s² 2p³ is nitrogen.
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