What are the parts of an electron configuration?
Answers
Answer:
Explanation:
electronic confirmation=1s^2,2S^2,2P^6,3S^2
atomic no.is 12 therefore :- this is magnesium
Period=3
Block=s-block
Group=II A
Related Questions
suppose the sample of magnesium used in this lab was contaminated with another metal that does not react with hydrochloric acid. how would this have changed your results?
Answers
If the sample of magnesium used in a lab was contaminated with another metal that doesn't react with hydrochloric acid, then the results obtained in the experiment would be affected.
This is because the data collected during the experiment would reflect the reaction between hydrochloric acid and the contaminated sample instead of pure magnesium. As a result, the following changes in results might have been observed:
1. The mass of the contaminated sample would be higher than the mass of pure magnesium.
2. The rate of reaction between the contaminated sample and hydrochloric acid would be slower than the reaction between pure magnesium and hydrochloric acid.
3. The volume of hydrogen gas collected from the reaction would be lower than the volume of hydrogen gas collected in the reaction between pure magnesium and hydrochloric acid.
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Using the model of the periodic table, which elements pictured are in the same period?
Answers
A student observes two cells. The student must classify the cells as either fungus or bacteria.What evidence can the student use to classify the cells?
Answers
Answer:
The bacteria cell has cytoplasm.
how many moles of permanganate were used? [2] 4. how many moles of iron were required to react with the permanganate? [1] 5. what is the mass of iron present in the initial sample? [1] 6. what is the mass percent of iron in the unknown iron sample? [2] 7. a student performed the experiment and got a higher mass percent than expected. other than human error or machine malfunctions, briefly explain a source of error from the experiment.
Answers
According to the balanced chemical equation, 2 moles of potassium permanganate produces 5 moles or oxidizes 5 moles of sulphite to sulphate ions. As a result, there are 0.639 moles of potassium.
In alkaline solution, KMnO4 reduces to green K₂MnO₄: 4 KMnO₄ + 4 KOH 4 K₂MnO₄ + O₂ + 2 H₂O. This reaction exemplifies hydroxide's uncommon role as a reducing agent. Mn₂O₇ is formed when concentrated sulfuric acid is added to potassium permanganate. One mole of KMnO₄ requires 5 moles of electrons in an acidic medium. Multiply equation (1) by 5 and equation (2) by 3 to balance the number of electrons. In an acidic medium, five moles of ferrous oxalate are oxidized by three moles of KMnO₄.
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.
The material in which a wave travels is called a ____
Answers
Answer:
medium
Explanation:
Why do we feel the heat from the sun even though it is far away from Earth?
O The sun is farther away from Earth than any other star.
The sun is closer to Earth than any other star.
O The sun is the largest star.
O The sun is the brightest star.
Answers
Answer:
B.) The sun is closer to Earth than any other star.
PESTLE and SWOT analysis for Harvard case CLEAN EDGE RAZOR: SPLITTING HAIRS IN PRODUCT POSITIONING.
Answers
The PESTLE and SWOT analyses provide a comprehensive assessment of the external and internal factors influencing the Harvard case "Clean Edge Razor: Splitting Hairs in Product Positioning."
The PESTLE analysis examines the external factors that may impact the case. Politically, regulations on product safety and environmental sustainability could affect the razor industry. Economically, consumer purchasing power and economic trends may impact the demand for high-end razors. Sociocultural factors, such as grooming habits and preferences, influence consumer behavior. Technological advancements, such as electric razors and online shopping, pose opportunities and challenges. Legal factors include intellectual property rights and advertising regulations. Environmental considerations involve sustainability and eco-friendly practices.
The SWOT analysis evaluates the internal strengths and weaknesses of the case. Strengths may include the Clean Edge brand reputation and innovative product features. Weaknesses could involve high manufacturing costs or limited market presence. Opportunities may arise from market growth and expanding into new segments. Threats may come from intense competition and changing consumer preferences.
By conducting both analyses, the case can gain insights into the broader industry landscape, identify potential risks and opportunities, and assess its own internal capabilities. This holistic understanding aids in making informed decisions and formulating effective strategies for positioning the Clean Edge Razor product.
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Part B Change the distance of the electron from the center position as it moves up and down. What relationship do you notice between the distance from the center position and the amplitude of the wave?
Answers
Answer:
The movement of the electron changes the amplitude of the wave. The farther the electron moves from the center position, the greater the amplitude.
Explanation:
Answer:
The movement of the electron changes the amplitude of the wave. The farther the electron moves from the center position, the greater the amplitude.
Explanation:
Edmentum Sample Answer.
A heat engine does 25 J of work per cycle while exhausting 120 J of heat to the cold reservoir. What is the engine's thermal efficiency?
Answers
The engine's thermal efficiency is approximately 17.24%.
Engine's thermal efficiency, and cold reservoir.
To find the engine's thermal efficiency, you need to know the work output and the heat input.
In this case, the heat engine does 25 J of work per cycle and exhausts 120 J of heat to the cold reservoir.
The total heat input can be calculated by adding the work output and the heat exhausted to the cold reservoir:
Total heat input = Work output + Heat exhausted
Total heat input = 25 J + 120 J
Total heat input = 145 J
Now, to find the engine's thermal efficiency, you can use the formula:
Thermal efficiency = Work output / Total heat input
Thermal efficiency = 25 J / 145 J
Thermal efficiency ≈ 0.1724
To express the thermal efficiency as a percentage, multiply the result by 100:
Thermal efficiency ≈ 0.1724 × 100
Thermal efficiency ≈ 17.24%
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In a neuron (a nerve cell), the concentration of K+ ions inside the cell is about 20 to 30 times as great as that outside. What potential difference between the inside and outside of the cell would you expect to measure is the difference is solely due to the imbalance of potassium ions?
Auxiliary question: To solve this problem, do you need to know the standard reduction potential of K?
Answers
The values given in the question, [K+]in is 20-30 times greater than [K+]out. Assuming [K+]out is 5mM (millimolar), the potential difference would be approximately -90mV to -100mV.
To calculate the potential difference between the inside and outside of a neuron solely due to the imbalance of potassium ions, you would use the Nernst equation. The equation is E = RT/zF * ln([K+]out/[K+]in), where E is the potential difference, R is the gas constant, T is the temperature, z is the charge of the ion, F is Faraday's constant, [K+]out is the concentration of potassium ions outside the cell, and [K+]in is the concentration of potassium ions inside the cell.
You do not need to know the standard reduction potential of K to solve this problem.
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Name the compound and determine the number of moles present. SHOW YOUR WORK.
60.0g Na2SO4
Answers
Answer:
60.0g Na2SO4
Na2SO4 molar mass 142.04g
divide 60.0 by 142.02
And you get the answer .422moles Na2SO4
let me know if you need more explanation
About which other carbon–carbon bonds may rotation occur on 2 methylhexane
Check all that apply.
C-1−C-2 bond
C-2−C-3 bond
C-4−C-5 bond
C-5−C-6 bond
C-2−C-7 bond
Answers
The carbon-carbon bonds where rotation can occur on 2-methylhexane are the C-1−C-2 bond, C-2−C-3 bond, and C-5−C-6 bond.
Rotation is possible around single bonds, and in 2-methylhexane, these bonds are all single bonds. The C-1−C-2 bond, C-2−C-3 bond, C-4−C-5 bond, and C-5−C-6 bond are all single bonds, allowing for free rotation. On the other hand, the C-2−C-7 bond is not present in 2-methylhexane and therefore rotation cannot occur on that specific bond.
In 2-methylhexane, rotation can occur around the following carbon-carbon bonds:
C-1−C-2 bond: Yes, rotation can occur around this bond.
C-2−C-3 bond: Yes, rotation can occur around this bond.
C-4−C-5 bond: No, rotation cannot occur around this bond because it involves the methyl group attached to the second carbon, which creates a hindered rotation.
C-5−C-6 bond: Yes, rotation can occur around this bond.
C-2−C-7 bond: No, rotation cannot occur around this bond because it involves the methyl group attached to the second carbon, which creates a hindered rotation.
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How many significant figures are in 15200 mL
Answers
Answer:
3
Explanation:
The zeros after 152 are not significant.
PLEASE I GIVE BRANLIEST
Answers
Answer:
Revision needed, the claim is longer than a sentence
Explanation:
it ain't hard just read the thing
What is the subscript of Carbon? 6 CaCO3
Answers
Answer:
subscript is 3
Explanation:
the subscript is the number that is slightly lower than a # which in this case it's O
this indicates that there's 3 oxygen atoms
Answer:
the answer is 1 ♀️
Explanation:
if the mass of agno3 is 5,3g per spoon. calculate the concentration of the solution after two spoons have been added
Answers
Assuming the solution is taken in 1 L volume so that the number of moles of AgNO₃ with 10.6 g or two spoon is 0.062 moles. Thus the concentration of the solution is 0.06 molar.
What is molarity?Molarity of a solution is the ratio of its number of moles of solute to the volume of solution in liters. Molarity is a temperature dependent quantity. This is the most common term for concentration of a solution.
The molar mass of AgNO₃ is 169.9 g/mol. One tea spoon silver nitrate is 5.3 g thus, two tea spoon is 10.6 g. The number of moles of 10.6 AgNO₃
= mass/weight
= 10.6 g / 169.9 g/mol
= 0.062 moles.
Thus the concentration of 0.062 moles in 1 L solution is 0.062 molar.
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Water and toluene are not miscible. Which of the following is most likely the formula of toluene?
CH3COOH
C6H12O6
CH3OH
C6H5CH3
Answers
Water and toluene are not miscible. Among the following (d) C₆H₅CH₃ is most likely the formula of toluene.
Toluene is a substituted aromatic hydrocarbon that is also known by the term toluol. It is an odourless liquid that is insoluble in water and has the characteristic odour of paint thinners. It is a mono-substituted benzene derivative that consists of a methyl group (CH3) that is connected to a phenyl group. Benzene is the parent compound. As a consequence of this, the name given to it by the IUPAC is methylbenzene. Toluene is utilised mostly in the industrial sector as both a feedstock and a solvent.
So the right option is option D, while others are soluble due to their polarity and functional group pressure.
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a 40 l vat contains 30 l of solution that is 5% acid. the solution is being pumped out at 4 l/sec and pure acid is being pumped in at 3 l/sec. assume there is instantaneous, perfect mixing. what is the concentration of acid when the vat is one-fourth full?
Answers
The concentration of acid when the vat is one-fourth full is 3%.
What is an acid?
The concentration of acid when the vat is one-fourth full can be expressed as a proportion of acid to the total volume of solution in the vat.
At the start, the vat contains 30 liters of a 5% acid solution. This means that 0.05 * 30 = 1.5 liters of acid is present.
As the solution is pumped out at 4 liters per second, and pure acid is pumped in at 3 liters per second, the total amount of acid in the vat is increasing at a rate of 3 liters per second.
At one-fourth full, the vat will contain 10 liters of solution (one-fourth of the original 40 liter volume).
To calculate the concentration of acid at this point, we need to calculate the total amount of acid present. Since the rate of increase of acid is 3 liters per second, after 10 seconds, the amount of acid present will be 3 * 10 = 30 liters.
Therefore, the concentration of acid when the vat is one-fourth full is 30/10 = 3%.
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Enter an orbital diagram for V5+ Drag the appropriate labels to their respective targets. Labels can be used once, more than once, or not at all. Not all targets will be filled Reset Help P 111 1s 25 38 4s 2p 3p 4p 3d 61 G1 G1 GIG1 G1 GIG1 G1 G1 G1G1G1 G1|| G1 G16161 62 G2 G2 G2 G2 G2 G2 G2
Answers
The electronic configuration of V5+ is [Ar]3d3. This means that it has three electrons in its 3d orbitals and no electrons in its 4s, 4p, and 4d orbitals.
The electronic configuration of an atom describes the arrangement of electrons in the atomic orbitals of that atom. In the case of V5+, the electronic configuration is [Ar]3d3, which can be understood as follows:
[Ar] represents the core electrons of the atom, which are the electrons in the innermost energy levels (1s, 2s, 2p) of the atom. In this case, since V5+ is a transition metal, its core electrons are those of argon, which is the element immediately preceding vanadium in the periodic table. The core electrons of argon are in the 1s2, 2s2, and 2p6 orbitals, so they are not involved in the chemical behavior of V5+.3d3 represents the valence electrons of the atom, which are the electrons in the outermost energy levels of the atom. In this case, V5+ has three valence electrons in its 3d orbitals.It is important to note that V5+ as an ion has lost 5 electrons. This means that it has lost the electrons from its 4s, 4p, and 4d orbitals, leaving only the electrons in its 3d orbitals. So no electrons are in 4s, 4p, and 4d orbitals.
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Write the empirical formula of a list for binary ionic compounds that could be formed from the following ions
Answers
Answer:
CaBr₂, CaO, FeBr₂, FeO
Explanation:
Per binary compound, there must be 1 cation (Ca²⁺, Fe²⁺) and 1 anion (Br⁻, O²⁻). The compound should have a charge of 0 (neutral). For this to occur, there sometimes needs to be more than one cation/anion present in the compound. Below I have included the math that displays why there are more ions necessary in some compounds.
CaBr₂
-----> Ca = +2 and Br = -1
-----> +2 + (-1) + (-1) = 0
CaO
-----> Ca = +2 and O = -2
-----> +2 + (-2) = 0
FeBr₂
-----> Fe = +2 and Br = -1
-----> +2 + (-1) + (-1) = 0
FeO
-----> Fe = +2 and O = -2
-----> +2 + (-2) = 0
1.) What is the difference between renewable and nonrenewable resources?
2.) Explain why people need to begin using renewable resources instead of nonrenewable
resources.
Answers
Answer: 1.) renewable resources can be replenished as fast as they are used. Nonrenewable resources are unable to be replaced at the same rate at which they are used. 2.) nonrenewable energy sources will eventually run out, leaving people to figure out how to continue running their cars, homes, and busines. They must find alternative sources of energy. Since renewable energy resources that will never run out, it is a great option.
Explanation:
How do scientists gather information about climate conditions millions of years ago?
Answers
Answer:
Paleoclimatology
Step by Step explanation:
is the study of climate records from hundreds to millions of years ago. Information for paleoclimate studies come from natural records rather than instruments: these indirect records of climatic conditions are called proxy records. Coring a tree to gain access to tree ring data.
PLEASE HELP MEEE
this is due like in 10 min
how do you explain that 1 OF2 + H2o --> 1 O2 + 2 HF demonstrates that mass is conserved in a chemical l reaction
Answers
Answer:
In order to find the two statements, we must first define what the enthalpy of formation and the enthalpy of reaction mean.
Enthalpy of formation:
The change in enthalpy when one mole of substance is formed from its constituent elemetns at standard state.
Enthalpy of reaction:
The change in enthalpy when a reaction occurs and the reactants and products are in their standard states.
Now, we check the statements. The true ones are:
The Hrxn for C(s) + O₂(g) → CO₂(g) is the same as Hf for CO₂
This is true because the formation of carbon dioxide requires carbon and oxygen in their standard states.
The Hf for Br₂(l) is 0 kJ/mol by definition.
Because the bromine is present in its standard state, the enthalpy of formation is 0.
The Hrxn for the reaction 1.5H₂(g) + 0.5N₂(g) → NH₃(g) is the same as the Hf for NH₃(g)
The reactants and products are present in their standard state, and the reaction is the same as the one occurring during the formation of ammonia.
The atomic mass of an element is defined as the weighted average mass of that element’s
a. naturally occurring isotopes
b. least abundant isotope
c. radioactive isotopes
d. most abundant isotope
Answers
Answer:
I say its A.
But im not EXTREMELY sure
Explanation:
Answer:
A. Naturally ocuring isotopes
several dams on the colorado river in texas produce electricity through hydropower. what is an advantage of this type of energy production?
Answers
Explanation:
hydropower energy is:
-renewable
-clean (doesn't produce toxins or emit harmful gases into the atmosphere)
-environment friendly
-cheap once installed
The several dams on the colorado river in texas produce electricity through hydropower. An advantage of this type of energy production is hydropower provides renewable energy for human use. Therefore, option C is correct.
What is renewable energy ?Energy that is derived from resources that can be regenerated naturally over time and are therefore considered to be renewable. It includes energy sources like sunlight, wind, water currents, and geothermal heat. Despite the fact that the majority of renewable energy sources are sustainable, some are not.
The term "renewable energy" refers to energy sources like wind and solar energy that are continuously and organically renewed. Sustainable energy is another name for renewable energy. The antithesis of fossil fuels, such as coal and gas, which are a finite energy source, are renewable energy sources.
The "renewable resource" of water may be used to provide electricity that is good for both the environment and people. This division manages the Canyon Dam discharge channel-adjacent hydroelectric facility near Sattler, Texas, which has a six-megawatt capacity.
Thus, option C is correct.
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Your question is incomplete, probably your question was
Several dams on the Colorado River in Texas produce electricity through hydropower. What is an advantage of this type of energy production?
A: land is flooded when dams are built
B:Dams improve biodiversity by creating lakes out of rivers
C:hydropower provides renewable energy for human use
D:electricity can only be generated during daylight hours
A small piece of hot metal is placed in cooler water. The metal is left in the water
until the metal and water have the same temperature (they are in thermal equilibrium).
Based on the conservation of energy, which of the following statements about the energy
of the metal and water system is true?
a) the amount of energy lost by the metal is less than the amount of energy gained by the water
b) the amount of energy lost by the metal is equal to the amount of energy gained by the water
c) the amount of energy lost by the metal is greater than the amount of energy gained by the water
Answers
Answer: The amount of energy lost by the metal is equal to the amount of energy gained by the water
Explanation:
A. Graph the following information in a BAR graph. Label and number the x and y-axis appropriately.
y
Month
Sept
Oct
Nov
Dec
Jan
Feb
# of deer
38
32
26
20
15
12
X
Answers
The quantity of deer is a dependent variable, whereas time is an independent variable.
Independent variable is the variable whose value doesn't depend on other variable.The independent variable is time(months)The dependent variable is number of deer.The appropriate title is variations in deer population in given time period.A variable is said to be independent if it does not depend on any other variable to determine its value. A variable is said to be independent if it does not depend on any other variable to determine its value. A variable that indicates a quantity being altered in an experiment is known as an independent variable. A quantity whose value depends on such modifications is referred to as a dependent variable. The independent variables in the context of a function are the function's inputs, while the dependent variables are the function's outputs.To learn more about dependent and independent variables visit:
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i think it’s b, true, & false. anyone confirm?? pls
Answers
Answer:
which question is it for
Rain, snow, sleet, or hail that falls from clouds to the Earth's surface.
O Condensation
O sublimation
O evaporation
O precipitation
Answers
A reef which hugs the shore?
Answers
fringing reef..........