The Aufbau Principle describes that
O electrons with the same spin cannot occupy the same orbital.
electrons will occupy single orbitals within and energy level before doubling up
electrons fill lower energy levels first before occupying higher energy levels.
O electrons in the same level have the same amount of energy
Answers
Answer:
electrons fill lower energy levels first before occupying higher energy levels.
Explanation:
The Aufbau's principle describes that electrons fill lower energy levels first before occupying higher energy levels.
In writing the electronic configuration of atoms, the Aufbau's principle is one of the most important principles to consider.
It states that "sublevels with with lower energies are filled up before those with higher energies".
Sublevels do not fill up in numerical order.
Related Questions
The table below describes two parts of living cells.
WHO EVER ANSWERS IT I WILL GIVE BRAINIEST!!
Parts of Living Cells
Plant cell Animal cell
Part A Present Present
Part B Present Absent
Which of the following is most likely correct? (1 point)
a
Part A is vacuole, Part B is nucleus
b
Part A is mitochondria, Part B is cell wall
c
Part A is cell wall, Part B is cell membrane
d
Part A is chloroplast, Part B is mitochondria
Answers
Answer: membrane and cell wall
Explanation: this is because the cell wall is only known to happen in plant cells and a membrane is in both plant and animal cells so it is most likely membrane and cell wall.
Answer:
C
Explanation:
When a metal is put into an acidic solution, what happens? A. the metal turns red B. hydrogen gas is produced C. nothing happens D. the surface becomes slippery
Answers
Answer:
B
Explanation:
It will produce hydrogen gas and salt.
Why can a soil scientist be part of the agriculture?help ASAP I’ll give brainliest
Answers
Which of the following most accurately describes a regulatory molecule that must be transported to its place of action within the body?
hormone
polypeptide
enzyme
Answers
Answer:
the answer is hormone
Explanation:
because it is
pls help with the questions
Answers
There are 2 atoms in a hydrogen molecule (H2).
There are 2 atoms in an oxygen molecule (O2).
There is 1 oxygen atom and 2 hydrogen atoms in a water molecule (H2O).
What are atoms and molecules?Atoms are the smallest particle of an element that ever exist and still retain the chemical properties of that element.
Atoms of elements can take part in chemical reactions.
Molecules are the smallest particle of a substance that can exist alone and still retain the properties of that substance. Molecules of elements are usually formed from a combination of two or more atoms of that element.
A subscript in a molecule tells you the number of atoms of that element in the molecule. For example, H2 tells you that there are 2 hydrogen atoms in the molecule.
The equation: H₂+ O₂ --> H₂O is not balanced
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How are the steps you went through when discovering a new species similar to the steps of the scientific method? Were any steps skipped?
Answers
Answer:
Most steps were skipped they couldn't predict what it would be they couldn't really observe I font think they used very many.
How can the percentage of air be determined
Answers
Answer:
The composition of air can be determined by an experiment which includes passing a known volume of air, measured at a known temperature and pressure, over sufficient amount heated copper granules/powder, and measuring the volume gas remaining after the gas cools down to the temperature at which the first measurement was taken
Oxygen reacts with copper according to the following chemical reaction
2Cu (s) + O₂ (g) → 2CuO (s)
Cupper does not react with the other constituents of air
Whereby the initial volume of air was 100 cm³, we have;
Percentage of oxygen in air = 100 - The final volume reading of the container initially holding the air
When done using am appropriate experimental setup, the percentage of gases remaining equals 79% to 80%, therefore, the percentage composition of oxygen in air is between 20 and 21 percent
Explanation:
Imagine that you heat a pot of water to a boil (212°F), then you turn off the stove and let the water sit there. The room is at room temperature (72°F) What temperature do you predict the water cool to after sitting for 8 hours? (
Answers
Answer:
72 °F
Explanation:
Hello,
In this case, since matter tend the be stable at conditions they do not change, if we have water at room temperature (72 °F) and we heat it until boiling but then we turn off the stove, we molecularly see that due to the heat, the molecules start moving faster and crashing to each other; however when that fed energy starts being removed as the stove gets turned off, the molecules lose energy causing them to start moving slower so they lose energy until a point the remain at the initial status, that is 72 °F because thermal equilibrium is reached. Therefore it is likely for the water to be at 72 °F as well once 8 hours have passed, because a thermal equilibrium is reached with the environmetnal temperature.
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Which chemical(s) are reactants in the following chemical
equation?
C + O2 CO2
SELECT ALL THAT APPLY
а) C
b) 02
c) CO2
d ) There are no reactants in this chemical equation.
Answers
Answer:
A and B
Explanation:
The reactants in this chemical equation are C and O₂.
Given the chemical reaction is:
C + O₂ → CO₂
In a chemical reaction, reactants combines to give the product. The reactants are located to the left side of the expression.
The products are found on the right side .
A + B → C
reactants products
So, in the given reaction,
C and O₂ are the reactants and CO₂ is the product.
Answer: B and C
Explanation:
ur welcome
A 2 cation of a certain transition metal has six electrons in its outermost d subshell. Which transition metal could this be
Answers
A 2+ cation of a certain transition metal has six electrons in its outermost d subshell. This transition metal is Iron (Fe) .
To identify the transition metal with a 2+ cation having six electrons in its outermost d subshell, we need to understand the electron configuration of transition metals and their cations.
A transition metal is an element found in the d-block of the periodic table, and these metals are characterized by having partially filled d orbitals. The outermost d subshell refers to the d orbitals of the highest energy level in the electron configuration.
In this case, we're looking for a transition metal with a 2+ cation that has six electrons in its outermost d subshell. This means the neutral atom would have eight electrons in its outermost d subshell, as the 2+ cation loses two electrons.
The transition metal that fits this description is Iron (Fe), which has an atomic number of 26. Its electron configuration is [Ar] 4s2 3d6 for the neutral atom. When it forms a 2+ cation (Fe2+), it loses the two 4s electrons, resulting in the electron configuration [Ar] 3d6 (noble gas configuration) or 1s2 2s2 2p6 3s2 3p6 3d6 (electronic configuration) . This Fe2+ cation has six electrons in its outermost d subshell, making it the transition metal you are looking for.
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if a resting axon increases its permeability to sodium ions:____
Answers
If a resting axon increases its permeability to sodium ions, it will undergo depolarization.
The resting membrane potential of a neuron is maintained by the unequal distribution of ions across the cell membrane. At rest, the axon has a negative charge inside compared to the outside, primarily due to the higher concentration of sodium ions outside the cell and higher concentration of potassium ions inside the cell.
When the permeability of the axon membrane to sodium ions increases, more sodium ions can flow into the cell. This influx of positively charged sodium ions depolarizes the cell membrane, reducing the electrical potential difference across the membrane. As a result, the inside of the axon becomes less negative.
This increase in sodium permeability can be due to various factors such as the opening of voltage-gated sodium channels or the binding of specific molecules that increase sodium permeability. Depolarization plays a crucial role in initiating and propagating action potentials along the axon, allowing for the transmission of electrical signals in the nervous system.
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A solution of NaCl was prepared in the following manner: 0.0842 g of NaCl is massed out on an analytical balance. The solid is transferred to a 25.00 mL volumetric flask. Deionized water is added to the flask such that the bottom of the meniscus is at the line. A 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask using a volumetric pipet and diluted to volume. 6. Calculate the concentration of NaCl in the resulting solution in mg/L NaCl. (answer = 67.4 mg/L) 7. Calculate the concentration of NaCl in the resulting solution using propagation of error through the calculation. Use the manufacturer's tolerance values as the absolute error. The tolerances can be found in Chapter 2 of the Harris text. Assume a Class 1 balance and Class A glassware. Treat the tolerances as random error. (answer = 67.4+0.4 mg/L) 8. Identify 2 possible sources of random (indeterminate) error. Identify 2 possible sourses of systematic (determinate) error.
Answers
Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl
To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7. Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.
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An invasive species is a species that disrupts the ecosystem into which it is introduced by displacing species.
Answers
An existing ecosystem can suffer from damage from invasive species in many different ways, such as shifting habitats and depriving native creatures of food and resources.
What is an invasive species?An invasive species is an organism that damages the environment or the economy in a new location in which it is not native. Invasive species may disrupt the food chain of a ecosystem by killing or substituting natural food sources. The invasive species could provide little to no food value to wildlife.
What is an example of a invasive species?Accidental introduction of invasive species into a new area is common. In Central Asia, the Black Sea and the Caspian Sea are home to zebra mussels. Zebra mussels accidently made their way to the Great Lakes of North America after becoming affixed to massive ships that sailed between the two areas.
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Given a force of 88 N and an acceleration of 4 m/s2, what is the mass? *
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The ovaries in human females and the testes in human males are glands that produce hormones as part of the endocrine system. What function is the endocrine system primarily supporting through these glands and hormones?
A.
breathing
B.
obtaining food
C.
reproduction
D.
removing waste
Answers
Answer:
reproduction
Explanation:
its on study island
Something that causes a response in an organism is called a(n) _____.
Answers
A pipe 10 m long and of radius r = 7 cm is to be coated by insulation material to a thickness of dr = 2 mm. Approximate the volume V of insulation material required in m³. Please use pi for л (rather than a decimal approximation) in your answer. Insulation volume (m³): You have not attempted this yet
Answers
The volume of insulation material required is approximately 0.003606 cubic meters (m³).
To calculate the volume of insulation material, we can subtract the volume of the inner pipe (original pipe) from the volume of the outer pipe (original pipe + insulation).
Given:
Length of the pipe, L = 10 m
Radius of the pipe, r = 7 cm = 0.07 m
Thickness of the insulation, dr = 2 mm = 0.002 m
The outer radius of the larger pipe is R = r + dr.
Using the formula for the volume of a cylinder, V = π(R² - r²)L, we can substitute the values and calculate:
V = π((0.07 + 0.002)² - 0.07²) × 10
V ≈ 3.606 × 10⁻³ m³
Therefore, the volume of insulation material required is approximately 0.003606 m³ (cubic meters).
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1) True or False: Atoms are charge neutral and do not have permanent dipole moments. 2) True or False: Molecules are charge neutral and do not have permanent dipole moments. If you answered True, give
Answers
False, Atoms are not charge-neutral and some have permanent dipole moments(1).False, Molecules are not always charge neutral and can have permanent dipole moments(2).
Both atoms and molecules have some charge because of the electrons.
The atoms themselves have no net charge, but the electrons are negatively charged. In other words, atoms are charge-neutral but their electrons are not.
Furthermore, atoms can have permanent dipole moments as well. For instance, a molecule of HCl has a permanent dipole moment because chlorine has a higher electronegativity than hydrogen, which means that the shared electron pair is drawn closer to the chlorine than to the hydrogen.Molecules can also have a charge imbalance or permanent dipole moment.
When the molecule has an uneven distribution of charge, it becomes polar. A permanent dipole moment exists when the electrons within a covalent bond are not equally shared between the atoms.
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To go from grams to moles you will have to multiply the grams by 22.4 true or false
Answers
yes you do need to multiply it by 22.4
please someone help I'm very confused
How much time in hours would it take a car to drive 100 miles at a speed of 33 miles per hour?
Answers
Answer:
\(3.03 \: or \: 3\frac{1}{33} (in \: fration) \: hours\)
Explanation:
33 miles takes 1 hour
1 " " 1/33 "
100 " 100×1/33
3.03 hours
what must happen first before a change of state can occur (change in mass, change in position, change in volume, or change in energy)
Answers
Answer:
Change in energy.
Explanation:
An energy change is required to shift one state to another or do any of the other listed.
Short leg trait would be transmitted to the next generation through????
Answers
Answer:
genes I believe???? like genes transmitted from past relatives
Could you pls help MEEEE??
A chemical equation is shown below.
HgS + O2 —> HgO + SO2
What are the coefficients that should be added to balance this equation? Use complete sentences to explain your answer.
Explain how this chemical reaction demonstrates the conservation of mass.
Answers
Answer:
The balanced equation for this reaction is:
2HgS + 3O2 -------> 2HgO + 2SO2
Therefore the co-efficents added to HgS, 02, HgO and SO2 to balance this equation are 2, 3, 3,2 respectively.
This chemical reaction demonstrates the conservation of mass as the same number of atoms of each element appear on either side of the equation. This means that the total mass of atoms on the reactant side of the equation will equal the total mass of atoms on the product side of the equation.
If the mixture in question 1 is in a 3.0 Liter container at 34 °C, what mass (in grams)of oxygen is present?If oxygen was 0.472 atm
Answers
Answer
The mass (in grams) of oxygen present = 1.79 grams.
Explanation
Given
Volume, V = 3.0 L
Temperature, T = 34 °C = (34 + 273.15 K) = 307.15 K
Pressure, P = 0.472 atm
What to find:
The mass (in grams) of oxygen present.
Step-by-step solution:
Step 1: Calculate the moles of oxygen present.
Using the ideal gas law:
\(PV=nRT\)R is the molar gas constant = 0.0820574 L•atm/mol•K.
\(\begin{gathered} 0.472\text{ }atm\times3.0\text{ }L=n(0.0820574\text{ }L•atm/mol•K\times307.15\text{ }K) \\ \\ n=\frac{0.472\text{ }atm\times3.0\text{ }L}{0.0820574\text{ }L•atm/mol•K\times307.15\text{ }K} \\ \\ n=0.056\text{ }mol \end{gathered}\)The moles of oxygen present is 0.056 mol.
Step 2: Convert 0.056 mol oxygen to mass in grams.
The molar mass of oxygen gas = 31.998 g/mol
Using the mole formula below, the mass of oxygen can be calculated as follows:
\(\begin{gathered} Moles=\frac{Mass}{Molar\text{ }mass} \\ \\ \Rightarrow Mass=Moles\times Molar\text{ }mass \\ \\ Mass=0.056\text{ }mol\times31.998\text{ }g\text{/}mol \\ \\ Mass=1.791888\text{ }g\approx1.79\text{ }grams \end{gathered}\)The mass (in grams) of oxygen present = 1.79 grams.
To determine , by gravimetric analysis, the concentration of barium ions (Ba2+) in a given solution, 25.00cm3 of it are pipetted into a beaker and an excess of dilute sulphuric acid is added to it. The precipitate then obtained (BaSO4) is filtered, dried and weighed. The mass of the precipitate is found to be 1.167g
Calculate the concentration of barium ions in the solution?
Answers
Answer:
NIO
Explanation:
Which balanced equation represents a neutralization reaction?
H₂SO4 + 2LIOH → Li2SO4 + 2H2O .
BaCl2 + Cu(NO3)2 → Ba(NO3)2 + CuCl2
2KCIO3 → 2KCI+ 302
Mg + NiCl2 → MgCl2 + Ni
Answers
The answer is A: H₂SO4 + 2LIOH → Li2SO4 + 2H2O
Answer:
H₂SO4 + 2LIOH → Li2SO4 + 2H2O
Explanation:
The balanced equation that represents a neutralization reaction is:
H₂SO4 + 2LIOH → Li2SO4 + 2H2O
This is a neutralization reaction because the acidic hydrogen ions (H+) in sulfuric acid (H₂SO4) react with the basic hydroxide ions (OH-) in lithium hydroxide (LiOH) to form water (H2O) and a salt (Li2SO4). The resulting solution will be neutral as the acid and base have neutralized each other.
This flow chart shows the amount of energy that is emitted by each type of light.
ultraviolet > blue light > yellow light > red light
(maximum energy) (minimum energy)
In an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect?
ultraviolet light
dim blue light
bright red light
bright yellow light
Answers
In an electromagnetic spectrum, bright red light would produce photoelectric effect on a strip of metal.
The electromagnetic spectrum is made up of waves that convey radiant electromagnetic energy and are comprised of electromagnetic fields. These waves may propagate over space. The electromagnetic waves that make up radiation are coordinated oscillations of the electric and magnetic fields. They develop as a result of periodic shift in both the electric and magnetic fields.
All electromagnetic waves in a vacuum move at the same speed, which is equal to the speed of air. The frequency or wavelength of a radio wave determines where it is located in the electromagnetic spectrum. They are produced when electrically charged particles accelerate and communicate with other charged particles.
Option C is the correct answer.
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Answer:bright red light
Explanation:
ed c
The graph below shows PV/RT for carbon dioxide at three different temperatures. Part A Rank the curves in order of decreasing temperature. Rank from highest to lowest.
Answers
The graph shows the behavior of carbon dioxide gas at different temperatures.
The y-axis represents the pressure (P) multiplied by the volume (V) and divided by the absolute temperature (T) of the gas, which is known as the reduced pressure (PV/RT). The x-axis shows the reduced volume of the gas.
The graph displays three curves that represent the behavior of carbon dioxide at different temperatures. The highest curve represents the gas at the highest temperature, while the lowest curve represents the gas at the lowest temperature.
The curve in the middle represents the gas at an intermediate temperature.
To answer the question, you need to rank the curves in order of decreasing temperature. This means you need to place the highest temperature curve first, followed by the intermediate temperature curve, and finally, the lowest temperature curve.
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Which of the following is an example of mutualism?
Answers
Answer:The relationship which is between bacteria and ungulates with the intestine is or good example of mutualism. Mutualism plays an important role in ecology. We can say that if we measure the exact fitness what we get as a benefit is a mutualistic relationship.example of a mutualistic relationship is that of the oxpecker (a kind of bird) and the rhinoceros or zebra. Oxpeckers land on rhinos or zebras and eat ticks and other parasites that live on their skin. The oxpeckers get food and the beasts get pest control.
Explanation:
hope this helps have a nice night❤️❤️❤️❤️
Explanation:
a human uses dog to protect a flock of sheep
by . Figure the density of the liquid in each beaker: The mass and volume of each liquid have been given in Table 1. Using the formula for density and a calculator, figure the density of each liquid and record it in the density column of Table 1. Round and write your answer out to the nearest hundredth. (This means you will have two numbers after the decimal point.) Don't forget to write the units!!!!!! (Hint: The formula was the answer to #2 on the front page.)
Answers
Answer:
Well what are the numbers but ik that it ius 5
Explanation: