Answers
Answer:
Here:
Explanation:
Determine the number of electrons in the atom from its atomic number. (See Below.)
Add electrons to the sublevels in the correct order of filling.
Add two electrons to each s sublevel, 6 to each p sublevel, 10 to each d sublevel, and 14 to each f sublevel.
To check your complete electron configuration, look to see whether the location of the last electron added corresponds to the element’s position on the periodic table.
Predicting the Order of Filling of the Orbitals
There are three ways to predict the order of filling of the orbitals. Probably the least reliable method is to memorize the following list (even though it shows the order of filling of all the orbitals necessary for describing the ground state electron configurations of all of the known elements).
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p
Instead of relying on memorization, you can use the memory aid shown below to remind you of the correct order of filling of the sublevels. The following steps explain how to write it and use it yourself.
Write the possible sublevels for each energy level in organized rows and columns like the image below. To do this, you need to remember that there is one sublevel on the first principal energy level, two on the second, three on the third, etc. Every principal energy level has an s orbital. The second principal energy and all higher energy levels have a p sublevel. The d sublevels start on the third principal energy level, the f sublevels start on the fourth principal energy level, etc.
Draw arrows like those you see below .
Starting with the top arrow, follow the arrows one by one in the direction they point, listing the sublevels as you pass through them.
The sublevels that are not needed for describing the known elements are enclosed in parentheses below .
Image of the memory aid that allows you to determine the order of filling for the sublevels
We can also use the block organization of the periodic table, as shown below, to remind us of the order in which sublevels are filled. To do this, we move through the elements in the order of increasing atomic number, listing new sublevels as we come to them. The type of sublevel (s, p, d, or f ) is determined from the block in which the atomic number is found. The number for the principal energy level (for example, the 3 in 3p) is determined from the row in which the element is found and the knowledge that the s sublevels start on the first principal energy level, the p sublevels start on the second principal energy level, the d sublevels start on the third principal energy level, and the f sublevels start on the fourth principal energy level.
We know that the first two electrons added to an atom go to the 1s sublevel.
Atomic numbers 3 and 4 are in the second row of the s block (look for them in the bottom half of in image below), signifying that the 3rd and 4th electrons are in the 2s sublevel.
Atomic numbers 5 through 10 are in the first row of the p block, and the p sublevels start on the second energy level. Therefore, the 5th through 10th electrons go into the 2p sublevel.
Atomic numbers 11 and 12 are in the third row of the s block, so the 11th and 12th electrons go into the 3s sublevel.
Because atomic numbers 13 through 18 are in the p block, we know they go into a p sublevel. Because the p sublevels begin on the second principal energy level and atomic numbers 13 through l8 are in the second row of the p block, the 13th through 18th electrons must go into the 3p sublevel.
The position of atomic numbers 19 and 20 in the fourth row of the s block and the position of atomic numbers 21 through 30 in the first row of the d block show that the 4s sublevel fills before the 3d sublevel.
Moving through the periodic table in this fashion produces the following order of sublevels up through 6s:
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s
Notice that atomic numbers 57 through 70 on the periodic table below are in the 4f portion of the table. It is a common mistake to forget that the 4f sublevel is filled after the 6s sublevel and before the 5d sublevel. In order to make the overall shape of the table more compact and convenient to display, scientists have adopted the convention of removing the elements with atomic number 57 through 70 and 89 through 102 (the latter being the 5f portion of the table) from their natural position between the s and d blocks and placing them at the bottom of the table. Electrons go into the 5f sublevel after the 7s sublevel and before the 6d sublevel. The second periodic table below shows how the blocks on the periodic table would fit together if the inner transition metals—the f block—were left in their natural position.
Related Questions
In lab you submerge 100 g of 40 0c nails in 200 g of 20 0c water. The specific heat capacity of iron is 0. 12 cal/g 0c. The final temperature of the water is about.
Answers
The final temperature of the water is about 37.1°C.
To calculate the final temperature of the water, we can use the principle of conservation of energy, which states that the heat lost by the hot object (in this case, the nails) is equal to the heat gained by the cold object (the water).
The equation for this principle is:
\(Q_{lost} = Q_{gained}\)
where
Q is the heat energy, which can be calculated using the formula:
Q = mcΔT
where
m is the mass of the object,
c is its specific heat capacity,
ΔT is the change in temperature.
For the nails, the initial temperature is 40°C and the final temperature is the same as the final temperature of the water, which we want to find. The mass of the nails is 100 g, and the specific heat capacity of iron is 0.12 cal/g°C.
Therefore, the heat lost by the nails can be calculated as:
\(Q_{lost}\)
= mcΔT
= 100 g x 0.12 x (40°C - \(T_f\))
For the water, the initial temperature is 20°C, the final temperature is \(T_f\)(the same as the final temperature of the nails), and the mass is 200 g. Therefore, the heat gained by the water can be calculated as:
\(Q_{gained}\)
= mcΔT
= 200 g x 1 cal /g°C x (\(T_f\) - 20°C)
We know that,
Specific heat capacity of 1 cal/g°C for water, since it was not given in the problem
Since the heat lost by the nails is equal to the heat gained by the water, we can set these two equations equal to each other and solve for \(T_f\):
100 g x 0.12 cal/g°C x (40°C - \(T_f\)) = 200 g x 1 cal/g°C x (\(T_f\)- 20°C)
By simplifying this equation, we get:
480 - 0.12 (final temperature) = 200(final temperature) - 4000
200.12 (final temperature) = 4480
final temperature = 22.36°C
Hence, the final temperature of the water is about 37.1°C.
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A patient is in the dental office to begin a preparation for veneers on teeth #6,#7,#8,#9, and #10. the dental assistant has set up the operatory for the procedure and has all the correct armamentarium ready to start the preparation. After reviewing the patients medical history, the dental assistant notices that the patient has had four heart surgeries. what changes should be made in the setup of this procedure and why
Answers
The changes which should be made in the setup of this procedure is the reduced lacing of the gingival retraction cords with racemic epinephrine.
Who is a Dentist?These are healthcare professionals who are trained and specialize in the care of the oral health of individuals.
In the Veneer preparations , a dental impression which has to be made which is the reason why gingival retraction cords with racemic epinephrine has to be used for effective results. Ina scenario where the patient has had four heart surgeries the the epinephrine should be reduced or other options used because it could increase heart pressure and lead to complications.
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What is the de Broglie wavelength of an electron traveling at 1.59×105m/s ?
Answers
The de Broglie wavelength of an electron traveling at 1.59×105m/s is 0.4547 x 10⁻⁹ m.
What is an electron ?The elementary electric charge of the electron is a negative one, making it a subatomic particle. Due to their lack of known components or substructure, electrons, which are part of the first generation of the lepton particle family, are typically regarded to be elementary particles.
The length scale at which a particle's wave-like characteristics are significant is indicated by its de Broglie wavelength. The symbol or dB is typically used to indicate the De Broglie wavelength. The de Broglie wavelength for a particle with momentum p is given by dB = hp.
λ = h/mv
Where,
λ = wavelength of electron
m = mass of electron = 9.11e-31 kg
v = speed of electron = 1.59 × 10⁵ m/s
h = constant
Therefore,
λ = (6.626x10⁻³⁴J-s) ÷ [(9.11e-31 kg) (1.59 x 10⁵ m/s)]
λ = 0.4547 x 10⁻⁹ m
Thus, The de Broglie wavelength of an electron traveling at 1.59×105m/s is 0.4547 x 10⁻⁹ m.
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What layer of the earth is the most dense?
A.Inner core
B. Outer core
C. mantle
D. crust
Answers
Answer: The inner core
Explanation:
♀️
The layer of the earth which is the most dense is the inner core as it is present in depth of earth.
What is earth?
Earth is the third planet from the Sun and the only place known in the universe where life has originated and found habitability. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. Approximately 70.8% of Earth's surface is made up of the ocean, dwarfing Earth's polar ice, lakes, and rivers.
The remaining 29.2% of Earth's surface is land, consisting of continents and islands. Earth's surface layer is formed of several slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth's liquid outer core generates the magnetic field that shapes the magnetosphere of Earth, deflecting destructive solar winds.
The atmosphere of Earth consists mostly of nitrogen and oxygen. Greenhouse gases in the atmosphere like carbon dioxide (CO2) trap a part of the energy from the Sun close to the surface.
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which is the graph of the function g(x) = f(-x)
Answers
To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.
What is a graph of the function g(x) = f(-x)?To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.
If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).
However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.
In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.
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What is the purpose of the arrow in a chemical equation?
Answers
The arrow in a chemical equation represents the direction of the reaction. It indicates the conversion of reactants into products. The arrow points from the reactant side to the product side, symbolizing the flow of the reaction.
The purpose of the arrow is to visually represent the chemical transformation occurring in the reaction. It shows the relationship between the reactants and products and the direction in which the reaction proceeds. The arrow implies that the reactant molecules are being rearranged and transformed into new substances with different properties.
Chemical equations are used to describe the stoichiometry and balance of reactions. The arrow helps convey this information by illustrating the overall process taking place. It serves as a crucial element in understanding the reaction's composition, reaction conditions, and the substances involved.
Furthermore, the arrow also implies that the reaction can occur in both directions. In reversible reactions, the arrow can be represented as a double-headed arrow, indicating that the reaction can proceed in either direction depending on the conditions.
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For a single substance at atmospheric pressure, classify the following as describing a spontaneous process, a nonspontaneous process, or an equilibrium system.
A) Solid melting below its melting point
B) Gas condensing below its condensation point
C) Liquid vaporizing above its boiling point
D) Liquid freezing below its freezing point
E) Liquid freezing above its freezing point
F) Solid melting above its melting point
G) Liquid and gas together at boiling point with no net condensation or vaporization
H) Gas condensing above its condensation point
I) Solid and liquid together at the melting point with no net freezing or melting
Answers
Answer:
Spontaneous process- This is the process that occurs on its own without the application of any external energy or other factor. They include
B) Gas condensing below its condensation point
C) Liquid vaporizing above its boiling point
D) Liquid freezing below its freezing point
F) Solid melting above its melting point
Non spontaneous - This is the process that doesn’t occurs on its own and requires the application of any external energy or factor. They include
A) Solid melting below its melting point
E) Liquid freezing above its freezing point
H) Gas condensing above its condensation point
Equilibrium system
G) Liquid and gas together at boiling point with no net condensation or vaporization
I) Solid and liquid together at the melting point with no net freezing or melting
A) Solid melting below its melting point - nonspontaneous process
B) Gas condensing below its condensation point - spontaneous process
C) Liquid vaporizing above its boiling point - spontaneous process
D) Liquid freezing below its freezing point - spontaneous process
E) Liquid freezing above its freezing point - nonspontaneous process
F) Solid melting above its melting point - spontaneous process
G) Liquid and gas together at boiling point with no net condensation or vaporization - Equilibrium system
H) Gas condensing above its condensation point - nonspontaneous process
I) Solid and liquid together at the melting point with no net freezing or melting - Equilibrium system
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Calculate and record the following data in the table. Name Propane Butane Methane
Molar volume (L/mol) _____ _____ _____
Average molar volume (L/mol) _______________________
Propane molar volume: ______ L/mol butane molar volume: ______ L/mol
Answers
The molar volume and average molar volume of propane, butane, and methane at STP are 24.45 L/mol , 24.93 L/mol ; 28.02 L/mol , 24.93 L/mol and 22.41 L/mol , 24.93 L/mol respectively.
The molar volume of a gas is defined as the volume occupied by one mole of gas at standard temperature and pressure (STP), which is defined as 0°C and 1 atm.
The molar volume of a gas can be calculated using the ideal gas law,
PV = nRT,
where P is pressure, V is volume, n is number of moles, R is the gas constant, and T is temperature in kelvins.The molar volumes of propane, butane, and methane at STP can be calculated as follows:
Propane: C₃H₈
At STP (0°C and 1 atm), the molar volume of propane can be calculated as:
V = (nRT) / P
V = (n x 0.0821 x (273.15 + 0) / 1) / 1
V = 24.45 L/mol
Butane: C₄H₁₀
At STP (0°C and 1 atm), the molar volume of butane can be calculated as:
V = (nRT) / P
V = (n x 0.0821 x (273.15 + 0) / 1) / 1
V = 28.02 L/mol
Methane: CH₄
At STP (0°C and 1 atm), the molar volume of methane can be calculated as:
V = (nRT) / P
V = (n x 0.0821 x (273.15 + 0) / 1) / 1
V = 22.41 L/mol
The average molar volume is the sum of the molar volumes divided by the number of gases:
Average molar volume = (24.45 + 28.02 + 22.41) / 3
Average molar volume = 24.93 L/mol
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0.5 pts This is a reaction that you can find the two half reactions for on a REDOX tower in your discussion manual: NAD+ +H2 --> NADH + 2H+
Group of answer choices
Which compound is the electron donor?
Which compound is the electron acceptor?
When the electron donor loses the electron it becomes:
When the electron acceptor accepts the electron it becomes:
Overall the electron travels from:
Answers
The electron donor is \(H_2\).
The electron acceptor is \(NAD^+\)
When the electron donor loses the electron, it becomes oxidized.
When the electron acceptor accepts the electron, it becomes reduced.
Overall, the electron travels from H to \(NAD^+\).
Oxidation and reductionOxidation is defined as:
Loss of electronsIncrease in oxidation numberLoss of hydrogenGain of oxygenReduction is defined as:
Gain of electronsDecrease in oxidation numberGain of hydrogenLoss of oxygenLooking at the reaction, \(NAD^+\) gained hydrogen or an electron to become NADH. this means that NADH has been reduced. The reducing agent or the electron donor is \(H_2\) .
Thus, the electron acceptor is \(NAD^+\). When the electron donor, \(H_2\), loses the electron, it becomes oxidized to \(H^+\).
When the electron acceptor, \(NAD^+\), accepts the electron, it becomes NADH.
This means that electron travels from \(H_2\) to \(NAD^+\)
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1. Warm air has a higher _____ than cold air.
A. kinetic energy
B. potential energy
C. chemical energy
D. nuclear energy
Answers
Answer:
Kinetic Energy
Explanation:
Warmer air particles are vibrating in place faster than cooler air, and motion is relative to kinetic energy.
good luck!
. How many kilograms of iron can be recovered from 639 kilograms of the ore Fe2O3
Answers
The first step we have to follow to answer this question is to convert the mass of Fe2O3 to moles using its molecular mass:
\(639kgFe_2O_3\cdot\frac{kmolFe_2O_3}{159.68kgFe_2O_3}=4.00kmolFe_2O_3\)According to its formula, each kmol of Fe2O3 contains 2 kmol of Fe. Use this information to find the amount of moles of iron:
\(4kmolFe_2O_3\cdot\frac{2kmolFe}{1kmolFe_2O_3}=8kmolFe\)Use the molecular mass of iron to find the mass of iron that can be recovered from the Fe2O3:
\(8kmolFe\cdot\frac{55.845kgFe}{kmolFe}=446.76kgFe\)It means that 446.76kg of iron can be recovered.
i really kinda need some hell right now :)
Answers
5) Determine the mass if lithium hydroxide that is produced when 12.87 g of lithium
nitride reacts with an excess of water according to the following process.
Li:N + 3 H2O → 3 LiOH + NH3
Answers
Answer: 26.54 grams
Explanation:
To calculate the moles :
\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)
\(\text{Moles of lithium nitride}=\frac{12.87g}{34.83g/mol}=0.369moles\)
\(Li_3N+3H_2O\rightarrow 3LiOH+NH_3\)
\(Li_3N\) is the limiting reagent as it limits the formation of product and \(H_2O\) is the excess reagent
According to stoichiometry :
As 1 moles of \(Li_3N\) give = 3 moles of \(LiOH\)
Thus 0.369 moles of \(O_2\) give =\(\frac{3}{1}\times 0.369=1.108moles\) of \(LiOH\)
Mass of \(LiOH=moles\times {\text {Molar mass}}=1.108moles\times 23.95g/mol=26.54g\)
Thus 26.54 g of \(LiOH\) will be produced from the given mass.
Two asteroids are 75,000 m apart one has a mass of 8 x 10^7 N what is the mass of the other asteroid
Answers
The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg
To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:
F = (G * m1 * m2) / \(r^{2}\)
where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.
Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):
1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)
Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.
The question was incomplete. find the full content below:
Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid
A. 3.4 x \(10^{11}\) kg
B. 8.3 x \(10^{12}\) kg
C. 1.2 x \(10^{12}\) kg
D. 1.2 x \(10^{10}\) kg
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Convert 530 grams of Sodium carbonate (Na2CO3) into moles of Sodium carbonate (Na2CO3)
Enter your answer(s) here
Convert 4.2 moles of H2O into grams of H2O
Enter your answer(s) here
How many moles are in 12.04 x 10^23 particles of O2 ?
Enter your answer(s) here
How many particles are in 3 moles of magnesium (Mg)?
Answers
1. 5 moles
2. 75.6 grams
3. 2 moles
4. 1.806 x 10²⁴ particles
Further explanationGiven
mass and moles of compound
Required
mass, moles and number of particles
Solution
1. 530 g Na2CO3
mol = 530 g : 106 g/mol
mol = 5
2. 4.2 moles H2O
mass = 4.2 moles x 18 g/mol
mass = 75.6 grams
3. 12.04 x 10²³ O2
mol = 12.04 x 10²³ : 6.02 x 10²³
mol = 2
4. 3 moles of Mg
particles = 3 x 6.02 x 10²³
particles = 1.806 x 10²⁴
How might a problem with Lucille’s respiratory system or circulatory system make it difficult for Lucille to play soccer?
Answers
Both oxygen and glucose are needed by cells to go through cellular respiration and metabolism which leads to energy.
Playing soccer requires an uptake of oxygen and energy, because of that it would be more difficult for Lucille to play soccer.
if a liquor law is violate the liquor authority can issue a citation today
Answers
If a liquor law is violated, the liquor authority can issue a citation of fine. The other consequence of liquor law violation is Liquor- license suspension.
What is liquor law?Liquor law is also called Alcohol laws. Alcohol laws are the laws which are related to the manufacture, use and the sale of alcohol or alcoholic beverages that contains ethanol. If this law is violated, the liquor authority can issue a fine as well as the suspension of Liquor- license so we can conclude that fine and Liquor- license suspension are the consequences of violation of liquor law.
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CO, (9) +2NH_(9) - CO(NH,) (s) +H, O(1)
a. What is the maximum mass of urea, CO(NH), that can be manufactured from the reaction of 2.20 moles of CO2 with sufficient amount of ammonia.
Answers
The mass of the ammonia that is required is 258 g.
What is the stoichiometry of the reaction?
The quantitative correlations between the reactants and products in a chemical reaction are the focus of the chemistry subfield known as stoichiometry.
We have to know that;
1 mole of CO2 produces 1 mole of urea
2.2 moles of CO2 produces 2.2 urea
Given that the number of moles of urea = 455 g/60 g/mol
= 7.58 moles
Now;
2 moles of NH3 produces 1 mole of urea
x moles of NH3 produces 7.58 moles of urea
x = 7.58 * 2/1
= 15.16 moles
Mass of the ammonia = 15.16 moles * 17 g/mol
= 258 g
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Copper is a metal that can behave like a magnet because
A. It has many magnetic domains oriented randomly
B. It has a very large magnetic domain pointing in a given direction
C. It is a conductor and can support electric current.
D. It has two large magnetic domains that always cancel each other out.
Answers
Copper is a metal that can behave like a magnet because It is a conductor and can support electric current.
What is a definition of metal?
Strong electrical and thermal conductivity, malleability, ductility, and high light reflection are all characteristics of metals, which are one type of materials.
Copper is not magnetic in and of itself. However, when a magnet comes close to copper (and some other metals), the magnetic field causes the copper's surface electrons to reorganize and start revolving. They generate resistance by rotating in a circular motion perpendicular to the magnetic field.
Copper has the highest conductivity among non-precious metals, which means it can carry more electrical current than other non-precious metals.
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Complete the paragraph to describe precipitation reactions.
Chemical precipitation occurs when a product is
and precipitates out of a solution. By comparison, precipitation reactions require the reactants to be
in the solvent.
Answers
Chemical precipitation occurs when a product is insoluble and precipitates out of a solution. By comparison, precipitation reactions require the reactants to be soluble in the solvent.
What is Chemical precipitation ?Chemical precipitation is a type of chemical reaction in which a solid substance is formed from the reaction of two or more dissolved chemicals. In a chemical precipitation reaction, ions from the reactant solutions combine to form a new compound that is insoluble in water, causing it to "precipitate" or settle out of the solution as a solid. Chemical precipitation reactions are often used in the laboratory to purify and isolate compounds, as the solid precipitate can be easily separated from the liquid solution using techniques such as filtration or centrifugation. The formation of a solid precipitate is typically indicated in a chemical equation by the presence of a (s) notation after the product.To learn more about Chemical precipitation refer :
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Answer: 1.) insoluble 2.) soluble
Explanation: EDMENTUM
The owner of Grizzly Tea Shack is thinking about adding iced tea to the menu. He
thinks he can do this with minimal effort by adding ice cubes to cups of hot tea.
He decides to measure how changing the number of ice cubes in a glass of
freshly brewed tea affects its cooling rate.
To begin, the owner varies the number of ice cubes, x, he puts in glasses of
freshly brewed tea. He then checks the temperature (in Celsius), y, of each glass
after 10 minutes.
Ice cubes Temperature after 10 minutes (in degrees Celsius)
2
17
3
5
6
6
20
10
11
15
Round your answers to the nearest thousandth.
Answers
Answer: 5,266
Explanation:
5,266
the average molecular speed in a sample of N2 gas at a certain temperature is 468 m/s the average molecular speed in a sample of HE gas is blank meters per second at the same temperature
Answers
Answer:
177.3 meters per second
Explanation:
Assuming that both gases are at the same temperature, we can use Graham's law to calculate the ratio of the average speeds of N2 and He molecules:
(ratio of speeds) = sqrt(molar mass of He/molar mass of N2)
The molar mass of N2 is 28.02 g/mol, and the molar mass of He is 4.00 g/mol. Therefore:
(ratio of speeds) = sqrt(4.00/28.02) = 0.379
We know that the average speed of N2 molecules is 468 m/s. Therefore:
(average speed of He molecules) = (ratio of speeds) x (average speed of N2 molecules) = 0.379 x 468 m/s = 177.3 m/s
Therefore, the average speed of He molecules at the same temperature is approximately 177.3 meters per second.
2 C2H6 + 7O2 --> 4CO2 + 6H2O
What is the UNSIMPLIFIED molar ratio used to convert H2O into CO2?
Answers
Based on the equation of the reaction, the unsimplified molar ratio used to convert H₂O into CO₂ is:
moles of CO₂ = moles of H₂O * 4/6
What is the molar ratio of a reaction?The molar ratio of a reaction is the ratio in which the mole of the reactants combines to form products.
The molar ratio of a reaction can be expressed as the molar ratio of reactants and reactants, reactants and products, or products and products.
The molar ratio of a reaction is obtained from the balanced equation of the reaction.
Considering the given reaction;
equation of reaction: 2 C₂H₆ + 7 O₂ ----> 4 CO₂ + 6 H₂O
The molar ratio of the products carbon dioxide, CO₂ and water, H₂O is 4 : 6.
This means that in the given reaction of the combustion of ethane, for every 4 moles of carbon dioxide formed, 6 moles of water will be formed.
Hence the conversion factor to convert moles of H₂O to moles of CO₂ is:
moles of CO₂ = moles of H₂O * 4/6
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True or False Polyunsaturated fatty acids are precursors of other molecules.
Answers
Dietary fats include polyunsaturated fat. Along with monounsaturated fat, it is one of the good fats. Foods like salmon, vegetable oils, and other plant- and animal-based foods include polyunsaturated fat. They act as precursors of other molecules. The given statement is true.
Precursors of eicosanoids with hormone-like properties including prostaglandins, leukotrienes, and thromboxanes are polyunsaturated fatty acids (PUFA).
Dihomo-linolenic acid (DGLA), arachidonic acid (AA), and eicosapentaenoic acid (EPA) are the three precursors that prostaglandins can be formed from. Depending on the precursor, series 1, 2, or 3 prostanoids is produced.
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What is the reason behind an atom being neutral?
Answers
What's the molality of a solution with 120 g of NaCl and 30 kg of water?A)0.068B)0.004C)0.25D)6.8
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Explanation:
Molality is the ratio of the amount of substance of a solute (in moles – n) to the mass in kilograms of the solvent (m).
The symbol for molality is usually W and it can be calculated by the following formula:
W = n/m
here, we need to calculate n of NaCl using the formula:
n = m/MM
where MM of NaCl is 58.5 g/mol
n = 120/58.5
n = 2.05 moles
W = 2.05/30
W = 0.068 mol/Kg
Answer: A) 0.068
Could Rutherford make any conclusions about neutrons and electrons based on the results of the experiment?
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Nothing can be inferred about neutrons and electrons based on the results of the experiment.
What was the Rutherford experiment?The crux of the Rutherford experiment was the discovery of the planetary model of the atom. In his experiment, what he essentially did was to bombard a thin gold foil with alpha particles.
After the bombardment, he discovered that some of the alpha particles passed through the gold foil purely undeflected , some of the particles were deflected through large angles while yet some of the alpha particles were bounced back.
On the basis of the observation, he opined that the atom has a central portion which contains a particle that is largely massive and caused the effects observed with the alpha particles. These results show nothing about the neutrons and electrons.
Learn more about Rutherford experiment:https://brainly.com/question/2386617
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Why does reactivity increase going down a group on the periodic table?
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Answer:
All group 1 metals have one electron in its outer shell. As we go down the group, the atom gets bigger... Therefore, the attraction between the nucleus and the last electron gets weaker. This makes it easier for the atom to give up the electron which increases its reactivity.
Explanation:
2 ,3 - dimethyl - 4 - fluoro hexane
please I need the structural
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Answer: There will be a methyl group on carbons 2 and 3, and a fluorine on carbon 4.
Explanation:
PLEASE HELP ASAP!!!!! What word is the best description for world population growth over the past 200 years?
Question 1 options:
Experimental
Arithmetic
Logarithmic
Exponential
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Answer:
Exponential
Explanation:
Because its the numbers/anything that is becoming more and more rapid.