Which is the electron configuration for bromine?
O 1s'2s?2p°3s?3p°4s?3d104p5
O 1s?2s?2p°3s?3p°4s?3d1°4p®
B O 122s?2p°3s?3pʻ4s?3d °4p
O 1s?2s?2p°3s?3p°4s23d°4ps
Answers
Answer:
The first one
Explanation:
I can't read them well: it should be \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{5}\)
** this is the expanded version
The electronic configuration for element bromine is 1 s² 2 s² 2 p⁶ 3 s² 3 p⁶4 s² 3 d ¹⁰ 4 p⁵.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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Related Questions
Zirconium has an HCP crystal structure, a density of 6. 51 g/cm3 and an atomic weight of 91. 22 g/mol. (a) What is the volume of the unit cell in cubic meters
Answers
Equation 3.5 can be used to get the volume of a Zr cell as Venture capital = nAZr/PN A.
Now, for Absorption coefficient. Az = 91.22 h t and for Hc, n = 6 atomic nuclei cell. Vc = 6 atoms per unit cell, 91.22 g/mol, and 6.51 g/cm3 as a result.
Equation: What is it?
Those who are learning English Equation definition two expressions are identical if and only if (for example, 8 + 3 = 11 and 2x - 3 = 7) a complex circumstance or problem: assuming that two things are equivalent the process of comparing items
What is formula 1a?
Equation definition 1a: the process or act of equating c: a specific state of someone being equated Governmental organizations and the payment for them come into urgent consideration when there is a close relationship or identity. R.G. Tugwell 2a
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the equator is warmer than the pole because the sun energy is more concentrated at the equator than at the poles. true or false
Answers
PLEASE HELP 100 POINTS!!!! AND GIVING BRAINLIEST!!!!!!!!
Why should a movie producer consider filming a new version of The First Men in the Moon? Create a 6-8 slide multimedia presentation to market your idea for this movie to a production company. Rubric Criteria Points Possible 20 (10) 11-19 (6-9) 6-10 (3-5) 0-5 (0-2) Points Earned Ideas & Content Relates Theme of Novel Provides analysis of character Accurate diagram of plot 20 Establishes a theme, relates an analysis of the protagonist, effectively summarizes the plot, and maintains a clear focus throughout. Establishes a theme, identifies some character traits of the protagonist, provides a summary of the plot, and maintains focus throughout. There are a few lapses in focus, but the theme is fairly clear. Presents somewhat of an analysis of character. The plot summary is mostly correct. It is difficult to figure out the theme of the novel. The character analysis is poor or not present. The plot summary does not accurately represent the story. Organization Structure Precision Focus 20 Strong organization; seamless transitions between ideas; Effective and precise content. Organization is appropriate but conventional; Attempt at a focused and precise sales pitch. Attempts at organization, inappropriate use of lists or bullets; content is unfocused and ideas are not developed No clear organizational framework or transitions. Ideas are vague or unfocused Voice Personality Sense of audience 20 Strong awareness of audience in the design. Students can clearly explain why they felt the vocabulary, audio and graphics chosen fit the target audience. Some awareness of audience in the design. Students can partially explain why they felt the vocabulary, audio and graphics chosen fit the target audience. Some awareness of audience in the design. Students find it difficult to explain how the vocabulary, audio and graphics chosen fit the target audience. Limited awareness of the needs and interests of the target audience. Images and Music Relevance to theme Effectiveness Imagery 10 Images and music stir a rich emotional res
Answers
Answer:-Science have researched more facts and cool things about it-It would have more facts and things to learn-The quality would be better and more understandingI just tried 3 quick ideas I hope it can help a bit
Explanation:
Answer:
the answer is you should know this already :)))))))))))))))))))))))))))))))))))))))))))))))))))
When an electron drops from a higher energy level to a lower one, energy is emitted. in comparison, how much energy is required to reverse the process, going from the lower level to the higher level?
Answers
Energy is released when an electron transitions from one energy level to another. In contrast, the same amount of energy is needed to carry out the process, the other way around, from the bottom elevation to the upper one.
What occurs when an electron transitions from one energy level to another?
The energy of the electron drops when it changes levels, and the atom releases photons. The electron emits a photon when it transitions from a greater to a lower energy level. The energy emitted is precisely the energy that is lost when an electron moves to a level with less energy.An atom's electrons have negative energy. The electron must be given energy in order to be removed from the hydrogen atom, as shown by the negative sign. The quantity of energy in the atom will rise by supplying the electron with energy. Similar to how a ball on Earth chooses to rest in valleys rather than hills, the electron wants to spend the majority of its time at a lower energy level. For a brief period of time, the electron remains in an excited state. The energy required to bring the electron to its lower-energy state will be released when the electron transitions between excited and unexcited states.Learn more about electrons here:
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Which compound has both ionic and covalent bonding?.
Answers
Answer: Calcium carbonate is another example of a compound with both ionic and covalent bonds. Here calcium acts as the cation, with the carbonate species as the anion. These species share an ionic bond, while the carbon and oxygen atoms in carbonate are covalently bonded
Explanation:
Which of the following gases has the 2 nd greatest atmospheric concentration? A. Carbon dioxide. B. Argon. C. Oxygen. D. Nitrogen.
Answers
The gas with the 2nd greatest atmospheric concentration is oxygen.
In Earth's atmosphere, the main keyword, the most abundant gas is nitrogen, constituting about 78% of the atmosphere. The next most abundant gas is oxygen, making up approximately 21% of the atmosphere.
Carbon dioxide and argon have lower concentrations compared to nitrogen and oxygen. Carbon dioxide makes up only a small fraction of the atmosphere, around 0.04%. Argon, although present in higher concentrations than carbon dioxide, still has a lower atmospheric concentration than oxygen.
Therefore, among the given options, oxygen has the 2nd greatest atmospheric concentration after nitrogen, making it the correct answer.
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how much energy would be lost by 23 g of water if it was heated until it was 78 degrees celsius and then allow to cool down to 27 degrees celsius
Answers
Answer:
Q = -4903.14 j
Explanation:
Given data:
Mass of water = 23 g
Initial temperature = 78°C
Final temperature = 27°C
Heat lost = ?
Solution:
Specific heat capacity of water is 4.18 J/g.°C
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 27°C - 78°C
ΔT = -51°C
Q = 23 g × 4.18 J/g.°C × -51°C
Q = -4903.14 j (negative sign shows heat is released)
Physical weathering caused by the action of freezing water
Answers
Answer:
Frost action involves the ~weathering~ processes caused by repeated cycles of freezing and thawing.
Explanation:
Answer: Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water. Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart.
Explanation:
what is the number of atoms in 0.0082g of gold
Answers
The number of atoms in 0.0082g of gold is 2.50 x 10^19 atoms.
What is a molar mass in chemistry?
Molar mass is the mass of one mole of a substance, usually expressed in grams per mole (g/mol). It is a fundamental concept in chemistry that allows us to relate the mass of a substance to the number of atoms or molecules present.
The molar mass of gold (Au) is approximately 197 g/mol. To find the number of atoms in 0.0082 g of gold, we first need to calculate the number of moles of gold present:
moles of gold = mass of gold / molar mass of gold moles of gold = 0.0082 g / 197 g/mol moles of gold = 4.16 x 10^-5 mol
Next, we can use Avogadro's number (6.022 x 10^23 atoms/mol) to convert the number of moles to the number of atoms:
number of atoms = moles of gold x Avogadro's number number of atoms = 4.16 x 10^-5 mol x 6.022 x 10^23 atoms/mol number of atoms = 2.50 x 10^19 atoms
Therefore, there are approximately 2.50 x 10^19 atoms in 0.0082 g of gold.
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How many atoms are there in 48 grams of carbon?
Answers
Answer:
20
Explanation:
density ________ as temperature ________ because the molecules lose energy and slow down, so the same number of molecules occupy less space.
Answers
This increased energy causes the molecules to move more rapidly, which in turn increases the volume of the substance. As the volume of the substance increases, its density decreases because the same amount of matter is spread out over a larger volume.
The density decreases as the temperature increases because the molecules lose energy and slow down, so the same number of molecules occupy less space. This happens because the increase in temperature causes the molecules to move more rapidly, increasing the space between them. The density of a substance is defined as its mass per unit volume. The density of a substance depends on its temperature, as well as its pressure and composition. As the temperature of a substance increases, the kinetic energy of its molecules also increases. This increased energy causes the molecules to move more rapidly, which in turn increases the volume of the substance. As the volume of the substance increases, its density decreases because the same amount of matter is spread out over a larger volume.
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In the electrolysis of molten lead bromide, what is the product at the anode?
Answers
Answer:
it is the second one. Lead
The atomic size of sodium is smaller than that of the sodium why?
Answers
My mother packed my woollen clothes in the summer season. She added a few white
coloured balls along with my clothes in the almirah . In the winter season when I opened the
almirah most of the balls had disappeared and a very few were left that had considerably
decreased in size. I was amazed.
a. What was the composition of those balls?
b. Why had those balls disappeared/decreased in size?
c. What was the purpose of putting those balls along with clothes?
Answers
a. The balls were most likely mothballs, which are commonly made of naphthalene or paradichlorobenzene.
b. The balls disappeared/decreased in size due to sublimation, where they transitioned from solid to gas without becoming a liquid.
c. The purpose of putting the balls along with clothes was to repel moths and other insects, protecting the woolen clothes from damage during storage.
a. The composition of the balls was most likely mothballs, which are typically made of a chemical compound called naphthalene or paradichlorobenzene.
b. The balls disappeared or decreased in size due to sublimation. Mothballs undergo a process called sublimation, where they transition from a solid to a gas state without going through the liquid phase. This means that over time, the mothballs slowly vaporize and dissipate into the air, resulting in their decrease in size or disappearance.
c. The purpose of putting those balls along with clothes was to prevent damage from moths and other insects. Mothballs contain chemicals that release a strong odor, which is unpleasant to insects. The odor acts as a deterrent and helps protect the clothes from being damaged by moth larvae or other pests that feed on natural fibers like wool. By placing the mothballs in the storage area, it creates an environment that repels these insects and helps preserve the quality of the woollen clothes during storage.
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what two major economic or global problems could be alleviated if we based our energy on hydrogen
Answers
The hydrogen can be produced from water using renewable energy sources, which makes it more sustainable.
If we based our energy on hydrogen, two major economic or global problems that could be alleviated are:
1. Climate change: This is a global issue that requires an immediate response. The world needs to move away from carbon-emitting fossil fuels. Burning hydrogen fuel emits only water and does not release greenhouse gases. If the world shifts to hydrogen fuel, it will reduce carbon emissions and help to slow down climate change.
2. Dependence on Oil: Most countries are dependent on oil. The price of oil is volatile, and the demand and supply fluctuate due to political, economic, and weather events. This dependence on oil is a major economic challenge for many countries. If we based our energy on hydrogen, we could reduce our dependence on oil and decrease oil imports, which could significantly improve the economy of countries that do not produce oil.
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Energy transferred when an object is moved by a force results in _______ being done on that object.
Answers
When an object is moved by a force, the energy transferred results in work being done on that object .The amount of energy that is transferred when an object is moved by a force is referred to as work. When a force is used to transfer energy to an object, work is done on it.
The force applied to the object determines the amount of work done, as well as the distance over which the force is applied. According to the definition of work, if there is no motion of an object, no work is done. This is due to the fact that there is no energy transfer in this case.The amount of work done is determined by multiplying the force applied to the object by the distance over which it is applied, according to the formula:W= Fd where W is work, F is the force applied, and d is the distance over which the force is applied. Work is measured in units of joules (J).What are the different types of work?The following are the three types of work:Positive work: When a force acts on an object in the direction of motion, work is done. The energy transferred is used to increase the object's kinetic energy. Negative work: When a force acts on an object in the opposite direction of motion, the work done is negative. The energy transferred is used to decrease the object's kinetic energy. Zero work: When a force acts on an object that is stationary, or when it acts perpendicular to the direction of motion, no work is done.for more such question on motion
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if equal amounts of helium and argon are placed in a porous container and allowed to escape, which gas will escape faster and how much faster?
A: Argon is 3.16x faster
B: Helium is 0.316x faster
C: Argon is 0.316x faster
D: Helium is 3.16x faster
Answers
Answer:
B: Helium is 0.316x faster
If equal amounts of helium and argon are placed in a porous container and allowed to escape, helium will diffuse 3.16x faster than argon.
According to Graham's law of diffusion of gases, the rate of diffusion of a gas is inversely related to the square root of its molecular weight.
Mathematically, when two gases are being compared;
r1/r2 = √m2/√m1
Where r1 = diffusion rate of gas 1, r2 = difussion rate of gas 2, m1 = molar weight of gas 1, and m2 = molar weight of gas 2.
Molar weight of helium = 4
Molar weight of argon = 39.9
Hence,
r helium/r argon = √39.9/√4
= 6.317/2
= 3.16
Therefore, 3.16 x r argon = r helium.
In other words, helium will diffuse 3.16x faster than argon.
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If you separated a gypsum stone cast from an alginate impression beyond the optimum time interval, you could expect the cast to be?
Answers
The 12-hour time of contact between alginate and therefore the plaster cast is not recommended because it influences the quality of the plaster cast
What is gypsum cast?Gypsum may be a resource that is found by doing a variety of activities. Gypsum are often crafted into Gypsum Orbs, which may then be turned into special caches is called Gypsum Casts. Gypsum Casts are gear type specific, and when opened, guarantee an Expertise bump for that sort of gear as well as an item of that type.
Is gypsum utilized in cast?Gypsum products are one among the most broadly utilized dental materials for fabrication of dental casts and dies which are used as for further construction of indirect dental restorations
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if lead metal is added to a 0.100 m cr3 (aq) solution. what are the concentrations of pb2 (aq), cr2 (aq), and cr3 (aq) when the reaction is at equilibrium?
Answers
The concentrations of Pb₂⁺ and Cr₂⁺ at equilibrium are 0 M and 0.100 M, respectively. The concentration of Cr₃⁺ at equilibrium is 0.200 M.
To determine the concentrations of the different species at equilibrium, we need to write the balanced chemical equation for the reaction between lead metal and chromium(III) ion:
Pb(s) + 2Cr₃⁺(aq) → Pb₂⁺(aq) + 2Cr₂⁺(aq)
We also need to know the initial concentration of chromium(III) ion, which is given as 0.100 M.
Since lead metal is a solid, it does not have a concentration. Instead, its presence affects the equilibrium concentrations of the other species. We assume that the reaction goes to completion, which means that all the chromium(III) ion will react with the lead metal.
At equilibrium, we can use an ICE table to determine the concentrations of the different species:
Initial: 0.100 M 0 M 0 M
Change: -0.100 M +0.100 M +0.200 M
Equilibrium: 0 M 0.100 M 0.200 M
At equilibrium, the concentrations of Pb₂⁺ and Cr₂⁺ are 0 M and 0.100 M, respectively. At equilibrium, the concentration of Cr₃⁺ is 0.200 M.
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Help ASAP Iill mark you as brainlister
Answers
C. Yes, if each sample contains 6.02 x 10²³ atoms.
Hello people ~
Volume of one mole of any gas at NTP is
(a) 11.2 litre
(b) 22.4 litre
(c) 10.2 litre
(d) 22.8 litre
Answers
Answer:
Volume of one mole of any gas at NTP is
(b) 22.4 litre
Answer:
22.4L
Explanation:
One mole of any gas at STP weighs 22.4L.
STP stands for Standard Temperature and pressure
273.15KPressure 1atmhow many moles of ba(oh)2 are present in 275 ml of 0.400 m ba(oh)2 ?
Answers
The number of moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)2 solution is 0.11 moles.
Moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)₂ solution can be calculated as follows:
First of all, we should be familiar with the formula of Molarity which is as follows:
Molarity (M) = moles of solute / liters of solution We can rearrange this formula to calculate the moles of solute as follows:
moles of solute = Molarity (M) × liters of solution (L)Now let's apply the above formula to the given problem. Molarity (M) = 0.400 M, liters of solution (L) = 275 ml or 0.275 L (since 1 L = 1000 ml)moles of Ba(OH)₂ = 0.400 M × 0.275 L= 0.11 moles.
Therefore, the number of moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)₂ solution is 0.11 moles.
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Provide an explanation for each of the following strange facts about Mercury:
1. Mercury’s atmosphere is incredibly thin.
2. The length of a Mercury year is about 1.5 times longer than a Mercury day.
3. The temperature range on Mercury is about 590 °C.
Answers
Answer:
Explanation:
1. Mercury’s atmosphere is incredibly thin.
It's thin because the atmosphere is made up of atoms blasted off its surface by the Solar wind and also consist of the stream particles coming from the outer layer of the sun
2. The length of a mercury year is about 1.5 times longer than a mercury a day.
Mercury revolves around the sun very quickly but rotates around its axis very very slowly
3.The temperature range on Mercury is about 590 °C.
During the day, temperatures on Mercury's surface can reach Very High But, the planet has no atmosphere to retain that heat
Which of the following is not a property of most
transition metals?
Answers
Answer:
Low melting point
Explanation:
Transition metals have the following properties:
Conductivity (Electrical and Thermal)
Malleability (You can hit it with a hammer to mold it)
High melting point
Answer:
Low melting point
Explanation:
Most transition metals property is high melting point.
Analyze the diagram showing the changing states of matter. Drag the item from the item bank to its corresponding match.
Answers
The correct matches for changes of state are:
1 or 3 : Arrow that shows particles getting closer togethergas: State of matter that would fill any containerliquid: State of matter with definite volume but NOT shape2 or 4: Arrow that shows particles gaining energysolid: State of matter with definite shapeWhat is change of state?Change of state is the process whereby matter in one physical state is converted to matter in another state by the addition or removal of heat.
The process of change of state are:
Melting: solid to liquid due to addition of heatVaporization: liquid to gas due to addition of heatSublimation: solid to gas due to addition of heatFreezing: liquid to solid due to removal of heatCondensation: gas to liquid due to removal of heatDeposition: gas to solid due to removal of heatConsidering the given diagram, the correct matches are:
1 or 3 : Arrow that shows particles getting closer togethergas: State of matter that would fill any containerliquid: State of matter with definite volume but NOT shape2 or 4: Arrow that shows particles gaining energysolid: State of matter with definite shapeIn conclusion, change of state of matter occurs due to heat changes.
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This question is about iron three of the raw material added to a blast furnace used to extract iron from henatite are coke hematite and limestone name one other raw material added to the blast furnace
Answers
Answer: The fourth material that is added to the blast furnace is HOT AIR which provides OXYGEN for used for combustion of carbon (Coke).
Explanation:
Iron is the second most abundant metal found in the earth's crust after aluminium. It is not found in the free metallic state but are extracted from rocks which are rich in iron that contains other materials. These are known are iron ores and the most common iron ores are haematite ( Fe2O3).
Iron can be extracted from its ore with the used of blast furnace. The materials used for extraction of iron includes:
--> Coke
--> haematite( iron ore)
--> limestone and
--> Hot air.
The iron ore is first roasted in air so that iron(III)oxide is produced. The iron(III)oxide is then mixed with coke and limestone and heated to a very high temperature. Hot air is introduced into it from the bottom of the furnace. The coke is oxidizes the the oxygen in the hot air blast to liberate carbondioxide.
Why is it important to make observations about the reactants?
Answers
Answer:
Reason Down below
Explanation:
It is important because when you make observation you get a clue sometimes and it reactants i feel like it also takes places with observation. :)
15. The specific heat of silver is 0.24 J/g*^ 0 C How many joules of energy are needed to warm 4.37 g of silver from 25.0C to 27.5 degrees * C ? 0.14 J 46 J 0.022 J
Answers
2.62J of energy will be required to warm a silver metal from a temperature of 25°C to 27.5°C.
How to calculate joules?The energy required in a calorimetry can be calculated using the following formula:
Q = m × c × ∆T
Where;
Q = quantity of heat absorbed or releasedm = mass of substancec = specific heat capacity∆T = change in temperatureAccording to this question, 4.37 g of silver should be heated from 25°C to 27.5°C. The heat required is as follows:
Q = 4.37 × 0.24 × (27.5 - 25)
Q = 1.0488 × 2.5
Q = 2.62J
Therefore, 2.62J of energy will be required to warm a silver metal from a temperature of 25°C to 27.5°C.
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1. Determinati masa moleculara, raportul atomic si raportul de masa pentru oxidul de aluminiu 2. Determinati compozutia procebtuala al hidroxidului de sofiu sau sofa cauxica, 3. Determinati ce cantitate calciu este cuprinds in 112 grame oxid de calciu 4. Determinati ce cantiate de sulf in 490 de grame de acid sulfuric
Answers
Answer:
im solving now
Explanation:
Describe the method you could use to investigate the volume of hydrogen produced during the electrolysis of sodium chloride.
Answers
Answer:
Gas tests include:
hydrogen - lighted splint goes out with a squeaky pop.
Explanation: