Sn2 reaction is a reaction which is known to be nucleophilic. This reaction occurs step by step and is a type of substitution reaction.
In Sn2 reaction a lone pair from the nucleophile attacks on a place of electron deficiency.
This reaction follows a second order kinetics. It is single step reaction and both bond forming and breaking will occur at the same time.
The chlorocyclohexane is a single bonded hexane structure.
It has Cl on the ortho position.
Cyanide is a triple bonded structure, sharing a triple bond between the C and N. It also has 2 lone pairs and a negative charge on C.
When we react these two compounds then after the Sn2 reaction, we get a new structure called cyno-cyclohexane. In this reaction, the cyanide will attack at ortho place replacing Cl with CN and Cl will be released.
Therefore, in this Sn2 reaction, the new compound formed will be cyno-cyclo-hexane.
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Is lithium 1+ or 2+?.
Lithium (1+) is a monovalent inorganic cation, a monoatomic monocation and an alkali metal cation.
What is lithium ?Chemical element lithium has the symbol Li and atomic number 3. A soft, silvery-white alkali metal, it is. It is the least dense metal and solid element under normal circumstances.
3 protons and 3 electrons make up an atom of lithium. It is capable of losing an electron, turning it into an ion. Now that it has more positive protons than negative ones, it is positively charged overall. Consequently, it is a positive ion.Learn more about Lithium here:
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Gallium (Ga) is in Group 3 of the modern periodic table.
Give the numbers of electrons and neutrons in an atom of the isotope Ga
[2 marks]
Number of electrons
Number of neutrons
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, number of electrons and number of neutrons of gallium-69 are 31 and 38.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
Natural gallium (31Ga) consists of a mixture of two stable isotopes: gallium-69 and gallium-71.
Mass number of gallium-69 is 69
atomic number of gallium-69 is 31
Number of electrons of gallium-69 is 31
Number of neutrons of gallium-69 is 38
Therefore, number of electrons and number of neutron of gallium-69 are 31 and 38 respectively.
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Which of the following statements about equilibrium is true?1) Equilibrium favors the products when the energy of the products is higher than the energy of the reactants.2) Equilibrium favors the reactants when the energy of the product is lower than the energy of the reactants.3) Equilibrium favors the products when they are less stable than the starting material of a reaction4) Equilibrium favors the products when they are more stable than the starting material of a reaction.
The assertion that equilibrium is true in option D When the products of a reaction are often more durable than the starting material, equilibrium favors the products.
The definition of equilibrium.
A static (like a body acted upon by energies whose result is zero) or fluid (like a chemical reaction reversible where the speeds in both sides are equal) condition of equilibrium between opposing sides or actions: a condition of emotional or intellectual equilibrium.
What does a body's balance mean?
When the body is in equilibrium, neither its internal energy nor its motion are affected by the passage of time. The forces are equalized if an item is in equilibrium.
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FILL IN THE BLANK. in the ___ quadrant of the core competence--market matrix, the focus is on leveraging current core competencies to improve current market position.
The focus is on using current core competencies to enhance current market position in the existing competence-existing market quadrant of the core competence-market matrix.
In this setting, products and services are bought and sold, and money of value is exchanged. With this in mind, it is clear that the existing competence-existing market places a strong emphasis on using current core competence-existing market to strengthen the market position that is currently in place.
A task, job, or activity cannot be done without the presence of one or more core abilities. A person succeeds in a certain endeavour when they possess certain core talents.
Every employee needs to possess core job-related skills. Typists need to be able to type quickly.
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6 and Q7 ask about the following solution: 1.0 mL of 6.0 M HCl is added to 100 mL of a buffer that contains equal moles of acetic acid (CH3COOH, Ka = 1.8 x 10-5) and sodium acetate (Na(CH3COO)). What is the pH of the solution before HCl is added?
1.0 mL of 6.0 M HCl is added to 100 mL of a buffer that contains equal moles of acetic acid (CH₃COOH, Ka = 1.8 x 10-5) and sodium acetate (Na(CH₃COO). The pH of the solution before HCl added is 4.74.
The buffer solution is defined as the mixture of weak acid and its conjugate base or vice versa. The pH of buffer solution is calculated by using Henderson-Hasselbalch formula which is given as
pH=pKa+log([base]/[acid])
In the given solution, acetic acid is an acid and sodium acetate is a base. If we have moles for both solution, then concentration will replaced by base and formula is written as
pH=pKa+log(base/acid)
When moles of acid and base are equal then, (base/acid)=1 and log(base/acid)=0. Then, the formula will be
pH=pKa
pKa is calculated by the formula
pKa=-log(Ka)
∴pKa=-log(1.8×10⁻⁵)
pKa=4.7447=4.74
∴pH=pKa=4.74
Therefore, the pH of a buffer solution before HCl added is 4.74.
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suppose of copper(ii) nitrate is dissolved in of a aqueous solution of sodium chromate. calculate the final molarity of copper(ii) cation in the solution. you can assume the volume of the solution doesn't change when the copper(ii) nitrate is dissolved in it. round your answer to significant digits.
According to the given statement The nitrate ion has a molarity of 0.241 M.
How can I determine molarity?We divide the molar mass of solute but by total volume of liter of solution to determine the molarity of a solution.
Briefing:Mass of copper(II) nitrate = 3.40 grams
Volume of the sodium chromate 0.20 M aqueous solution is 150 mL, or 0.15 L.
Step 2: The balanced equation
Cu(NO3)2 + Na2CrO4 → CuCrO4 + 2NaNO3
→ 2Na+ + 2NO3-
Step 4: Calculate moles of nitrate ion
When we consume 1 mole of Cu(NO3)2, we make 2 moles of NO3- This works out to 0.0181 mole of Cu(NO3)2 and 0.0362 moles of NO3-
Step 5: Calculate molarity of the nitrate ion
Molarity : Moles / volume
Molarity NO3-
= 0.0362 moles / 0.150 L
Molarity NO3-
= 0.241 M
The nitrate ion has a molarity of 0.241 M.
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The complete question is -
Suppose 3.40g of copper(II) nitrate is dissolved in 150.mL of a 0.20M aqueous solution of sodium chromate. Calculate the final molarity of nitrate anion in the solution. You can assume the volume of the solution doesn't change when the copper(II) nitrate is dissolved in it. Round your answer to 3 significant digits.
if 19.9 grams of an aqueous solution of sodium carbonate, , contains 2.34 grams of sodium carbonate, what is the weight/weight percent of sodium carbonate in the solution?
The weight/weight percent of sodium carbonate in the solution Percentage by mass is 11.75.
Given that,
Mass of solution = 19.9 g
Mass of solute = 2.34 g
Percentage by mass = mass of solute / mass of solution × 100
Percentage by mass = 2.34 / 19.9 × 100
Percentage by mass = 11.75
Hence, Percentage by mass is 11.75.
Percentage by mass is the percentage of mass of solute and mass of solution.
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Use the four-step procedure to solve the following problem. The capacity of an automobile cooling system is 16 quarts. It is half full of 15% antifreeze solution. The owner is adding 2 gallons of 90% solution. When he is finished, what will the solution's percentage value be? a gallon is 4 quarts. 37. 5% 75% 52. 5% 105%.
The percentage is used to describe an portion of a whole. 52.5% of the solution was currently present in the tank.
What is the antifreeze used for?The colored liquid called antifreeze, often known as engine coolant, is combined with water to assist control your engine during extremely hot conditions. Coolant is injected all through the engine block so keep the temperature when the weather outside change from hot to cold. Radiators are protected from corrosion by antifreezes, which also are frequently added to water with car cooling systems.
Briefing:Total solution inside the tank/Amount of solution currently as in tank
= Quantity of solution in tank/Total solution in tank
= [(0.15×2)+(0.9×2)]/(2+4)
= 2.10/4
= 0.525
= 52.5%
The percentage of the solution inside the tank is therefore 52.5%.
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the half-lives of different radioisotopes are given in the table. radioisotope half-life (min) argon-44 12 lead-196 37 potassium-44 22 indium-117 43 how long would it take, in minutes, for the amount of argon-44 to decrease from 72.0 mg to 9.00
Radioisotope Half-life.
A radionuclide is a nuclide that has excess nuclear electricity, making it unstable. This extra strength can be used in one of 3 methods: emitted from the nucleus as gamma radiation; transferred to one in every one of its electrons to launch it as a conversion electron, or used to create and emit a brand new particle from the nucleus.
Radioisotopes in remedy. Nuclear medicine uses small amounts of radiation to offer statistics about a person's frame and the functioning of specific organs, ongoing biological procedures, or the disordered country of a particular contamination. In maximum instances, statistics is utilized by physicians to make an accurate prognosis.
Radioactive decay is the technique wherein a radioactive atom spontaneously offers off radiation within the shape of energy or debris to reach a more strong state. it's far more important to differentiate between radioactive cloth and the radiation it offers.
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What change occurs during reduction?.
An oxidation-reduction reaction, often known as a redox reaction, occurs when two chemical species exchange electrons (the atoms, ions, or molecules involved in the reaction).
Redox reactions are ubiquitous; they occur during the burning of fuels, the corrosion of metals, photosynthesis, and cellular respiration, among other processes. Some species go through oxidation, which is the loss of electrons, while others go through reduction, which is the gain of electrons, during a redox process.
Redox reactions, sometimes called oxidation-reduction processes, involve the movement of electrons from one species to another. When a species receives electrons, it is said to be reduced, but when a species loses electrons, it is said to be oxidized.
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write a net ionic equation for the overall reaction that occurs when aqueous solutions of sodium hydroxide and oxalic acid
A net ionic equation for the overall reaction that occurs when aqueous solutions of sodium hydroxide and oxalic acid is :
H₂C₂O₄ + 2OH⁻ ----> C₂O₄²⁻ + 2H₂O
The balance molecular equation is given as :
2NaOH (aq) + H₂C₂O₄ (aq) -----> Na₂C₂O₄ (aq) + 2H₂O (l)
now, the complete ionic equation is given as :
H₂C₂O₄ + 2Na⁺ + 2OH⁻ ----> 2Na⁺ + C₂O₄²⁻ + 2H₂O
cancel out the spectators ion the spectators ions are those which are on both side the reactant side and the product side : the net ionic equation is given as :
H₂C₂O₄ + 2OH⁻ ----> C₂O₄²⁻ + 2H₂O
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in order to use a pipet, place a choose... at the top of the pipet. use this object to fill the pipet such that the choose... of the liquid is even with the volume line. release the liquid, touching the tip of the pipet to the side of the container if necessary to release the last drop choose... the pipet tip.
An bulb or pump should be placed on top of a pipet before using it. Utilize this item to refill the dropper such that the liquid's meniscus is parallel to the volume line.
Low volume: constructive or negative?While rising volume denotes bullish trade, falling volume denotes bearish trading. If a security's price declines but only with minimal volume, there can be additional reasons at play in addition to a real bear turn.
What does stock volume mean?Simply said, volume is the total number of shares that are exchanged in a given portfolio, index, or other asset over a given amount of time. For instance, depending on a 90-day median, the most popular US stock on October 27, 2022,
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How does electrolysis separate hydrogen from water?.
Electrolysis is the process of using an electrical current to separate water into hydrogen and oxygen gas.
A promising method of producing carbon-free hydrogen from nuclear and renewable sources is electrolysis. Water is split into hydrogen and oxygen through a process known as electrolysis. An electrolyzer is the apparatus in which this reaction occurs. The size of an electrolyzer can range from small, appliance-sized machinery that is ideal for small-scale distributed hydrogen generation to large-scale, central production facilities that might be connected directly
Similar to fuel cells, electrolyzers are made up of an anode and a cathode that are separated by an electrolyte. Due to the various electrolyte materials used and the ionic species it conducts, different electrolyzers operate differently.
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Although a certain molecule is involved in a specific reaction, its structure and chemical composition are exactly the same after the reaction as before the reaction. This molecule is most likely classified as.
This molecule is most likely classified as an enzyme.
In chemical reactions, the total mass of all substances involved in the reaction remains the same. The number of atoms in the reaction also remains the same. Mass cannot be created or destroyed by chemical reactions. synthetic. A chemist is said to be synthesizing or synthesizing a new substance when he makes a new substance out of other substances.
Reactants are converted to products and the process is represented by a chemical formula. The substances that enter a chemical reaction are called reactants, and the substances that are formed at the end of the reaction are called products. A reversible reaction occurs when the forward and reverse directions of the reaction proceed at the same rate and the amounts of reactants and products do not change overall.
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the triple point of co2 occurs at nearly 1000 times greater pressure and at a lower temperature than the triple point of h2o. based on this information, which of the following statements is true
Since liquid CO2 cannot exist at pressures lower than 5.11 atm, the triple point is defined as 56.6 °C and 5.11 atm.
Are CO2 liquids explosive?
Although it can impair judgement at high doses, carbon dioxide is neither poisonous nor combustible. Asphyxiation is typically seen as the primary risk associated with CO2. The Boiling Liquid Expanding Vapour Explosion, however, is a serious risk connected to compressed CO2 (BLEVE)
What PSI does CO2 turn into liquid at?
Only at pressures more than 5.1 atm does liquid carbon dioxide form; the triple point of carbon dioxide is approximately 518 kPa at 56.6 °C. Depending on the pressure, the liquid's boiling point ranges from -70°F to +88°F. The expansion ratio when vaporised at 60°F is 535:1. CO2 is a gas or liquid.
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Glucose molecules moving through protein channels is an example of what type of transport?.
Glucose molecules moving through protein channels is an example of active transport.
Glucose is an easy sugar with the molecular system C₆H₁₂O₆. Glucose is average the amplest monosaccharide, a subcategory of carbohydrates.
A blood sugar degree of less than 140 mg/dL (7. eight mmol/L) is regular. A studying of more than 200 mg/dL (eleven.1 mmol/L) after-hours method you've got diabetes. An analysis between 140 and 199 mg/dL (7.8 mmol/L and 11. zero mmol/L) approaches you've got prediabetes.
Blood sugar, or glucose, is the main sugar found in your blood. It comes from the food you eat, and is your frame's essential supply of energy. Your blood consists of glucose for all your frame's cells to use for electricity. Diabetes is an ailment in which your blood sugar ranges are too high.
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a chemistry student needs of chloroform for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of chloroform is . calculate the volume of chloroform the student should pour out. round your answer to significant digits.
A chemistry student needs 35.0g of chloroform for an experiment. By consulting the CRC handbook of chemistry and physics, the student discovers that the density of chloroform is 1.48 g/mL. The volume of the chloroform that the student should pour out is 23.6 mL.
The density of a compound is calculated using the formula
density=mass/volume
Rearrange the formula for volume
volume=mass/density
The density of a chloroform solution is 1.48 g/mL and its mass is 35.0g. Plug the values in the formula
volume=(35.0 g×mL/1.48 g)
volume=23.6489 mL=23.6 mL
Therefore, the volume of the chloroform student should pour out in the flask or any apparatus is 23.6 mL.
Your question is incomplete but the complete question is
A chemistry student needs 35.0g of chloroform for an experiment. By consulting the CRC handbook of chemistry and physics, the student discovers that the density of chloroform is 1.48 g/mL. Calculate the volume of chloroform the student should pour out. Round your answer to three significant digits.
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A subunit of an organic compound that confers particular chemical and physical properties is termed?.
A subunit of an organic compound that confers particular chemical and physical properties is termed as functional group.
The organic compound are the large chemical compounds in which one or more than two atoms of carbon are covalently linked to the other elements. A functional group of the organic compounds is the collection of atoms in the molecules that bind together to react. A functional group is the an atom within a molecule that has the similar properties. the compounds are formed when two or more than two atoms are combine chemically in a fixed ratio.
Thus, the functional group is the subunit of the organic compounds which explains the particular physical properties and the chemical properties.
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Is the ghost in Hamlet a metaphor?.
Ghosts are frequently used as metaphors for the need for justice since they are seen as supernatural echoes of a moral injustice.
What does the Ghost in Hamlet stand for? Hamlet's father's ghost makes an unsettling revelation and seeks retribution in Shakespeare's tragedy Hamlet.It is customary to interpret ghosts as metaphors for the desire for justice because they are seen as supernatural reminders of a moral injustice.Inspiring Hamlet to exact his father's retribution is the ghost, a symbol.The ghost makes his first entrance, which starts the entire plot's action.Hamlet learns the truth from the ghost's warnings and becomes enraged enough to exact revenge on his father after they turn out to be true.Act 1, Scene 2 of Hamlet's first soliloquy features an insightful metaphor that reads as follows: "This unweeded garden is going to seed.Things foul and repulsive in nature / Just possess it."Hamlet muses over the recent happenings in Elsinore in this despondent monologue.To learn more about Hamlet refer
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if u place a metal spoon in a pot of soup what type of heat tranfer caused this to happen
The type of heat transfer that has occurred here is conduction.
What is heat transfer?We know that it possible for heat to move from one object to the other. There are three main modes by which heat can move from one object to the other and these are;
ConductionConvectionRadiationWe know that as the spoon got into the pot of soup the molecules in the spoon started to vibrate faster and this energy is gradually spread across the length of the spoon while the molecules maintain their mean position. This is conduction.
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Missing parts;
You place a metal spoon in a pot of soup. After a few minutes, you touch the end of the spoon and notice that it is hot. Which type of heat transfer caused this top happen? Explain
Is H2O a covalent or ionic?.
H2O is a polar covalent molecule.
water molecules' fluid interactions. Individual H2O molecules have a V-shape and are made up of one oxygen atom and two hydrogen atoms (shown in white) (depicted in red). Hydrogen bonds allow adjacent H2O molecules to temporarily connect (depicted as blue and white ovals).
In each H2O molecule, the hydrogen (white) and oxygen (red) atoms are held together by powerful connections known as covalent bonds. When two atoms share electrons with one another, as is the case here with oxygen and hydrogen, covalent bonds are created. The V-shaped H2O molecule takes on a little different charge on each end because oxygen and hydrogen draw the shared electrons in different ways. Comparing the region around the oxygen to the opposite, hydrogen-containing end of the molecule, which is somewhat positive, the area around the oxygen is somewhat negative.
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What is the main purpose of Marxism is?.
The creation of a classless society on a global scale is, as we all know, the main objective of Marxism. As as this may seem to most people, many capitalist beliefs to be dismantled before it could ever take place.
What sort of ideology is that, specifically?A group's or a person's set of views and opinions can be referred to as their ideology. Ideology frequently alludes to a number of policy convictions or a collection of concepts that define a certain culture. The ideologies of capitalism, communism, socialism, & marxism exist.
What does ideology in society mean?A group of widely held social beliefs known as an ideology are frequently advanced to support a certain political course of action. Ideologies serve as an explanatory tool by offering justifications for social facts and problems, allowing both individuals and organizations to locate themselves in the larger social structure.
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a reducing chemical reaction . group of answer choices reduces the compound to a simpler form adds an electron to the substrate removes a hydrogen atom from the substrate is a catabolic reaction
A reducing chemical reaction adds an electron to the substrate.
Reduction is a term used to describe the yield of electrons, the accumulation of hydrogen, or the reduction of oxygen from the substrate.
When a reactant accumulates electrons during a reaction, it is called reduction. Reduction reactions include the addition of electrons to a substrate and the donor of the electrons is a reducing agent that itself brings oxidization. Therefore a reducing chemical reaction retains the addition of electrons to a substrate.
Oxidation-reduction (redox) reactions consist of the transfer of electrons between compounds while catabolic reactions are the type of reactions in which complex substances are split down into simpler units with the discharge of energy. Therefore these options are incorrect
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One reason spectroscopists study excited states is to gaininformation about the energies of orbitals that are unoccupied inan atom's ground state. Each of the following electronconfigurations represents an atom in an excited state. Identify theelement, and write its condensed ground-state electronconfiguration. (Type your answer using the format [Ar] 4s2 3d10 4p2for [Ar]4s23d103p2.)
(a)1s22s22p63s13p1
element
ground state electron configuration [ ] (b)1s22s22p63s23p44s1
element
ground state electron configuration [ ] (c)1s22s22p63s23p64s23d44p1
element
ground state electron configuration [ ] (d)1s22s22p53s1
element
ground state electron configuration [ ]
What causes ionic bonds to form?.
Ionic bond is formed due to the transfer of some electrons from one atom to another
All matter is made up of tiny building blocks that are known as atoms. Atoms make up elements, which are the substances found naturally on Earth or in the atmosphere that can't be further chemically broken down. Atoms of the different elements bond with each other in order to form molecules and compounds.
An ionic bond is formed by the complete transfer of some electrons from one atom to another. The atom that is losing one or more electrons becomes a cation which is a positively charged ion. The atom that is gaining one or more electron becomes an anion which is a negatively charged ion. When the transfer of electrons occurs, an electrostatic attraction between the two ions of opposite charge takes place and an ionic bond is formed.
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The strong attraction that holds atoms together in a metallic bond is the result of.
When balancing a redox reaction, begin by separating thereaction into _______________ (reactants and products, halfreactions, or elements). Balance each of these in terms of______________ (stoichiometry, number of moles, or atoms and charge). Multiply by some factor if necessary so that the number of_______________ (elements, electrons, or moles) appearing in both is the same. Add these together, canceling out any terms that appear on both sides of the final equation.
To solve such this we must know the concept of redox chemical reaction and their balancing in acidic, neutral and basic medium. The blanks should be filled with half reactions, atom and charge and electrons.
What is chemical reaction?
Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
When balancing a redox reaction, begin by separating the reaction into half reactions (reactants and products, half reactions, or elements). Balance each of these in terms of atom and charge (stoichiometry, number of moles, or atoms and charge). Multiply by some factor if necessary so that the number of electrons (elements, electrons, or moles) appearing in both is the same. Add these together, canceling out any terms that appear on both sides of the final equation.
Therefore, the blanks should be filled with half reactions, atom and charge and electrons.
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select all that apply select all the statements that correctly describe hybridization involving d orbitals.
Due to their alignment along axes like those of p-subshell orbitals, dz2 and dx2y2 participate in the formation of hybrid orbitals.
How does dsp2 hybridization work?In the case of transition metal ions, the dsp2 form of hybridization is very common. This sort of hybridization involves the dx2y2, s, and two p orbitals. The square planar shape is adopted by the four dsp2 hybrid orbitals.
Sp3 D hybridization: what is it?In sp3d hybridization, 1s, 3p, and 1d orbitals are mixed to create 5 sp3d hybridized orbitals with identical energy. They have bipyramidal trigonal geometry. S, P, and D Orbital Synthesis Trigonal Bipyramidal Symmetry
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Question:
select all that apply select all the statements that correctly describe hybridization involving d orbitals.
A. Hybird orbitals are formed from the hybridization of atomic orbitals. The hybrid orbitals all have the same shape and energy.
B. A hybrid orbital is formed by the combination of atomic orbitals from both the bonding atoms.
C. Several atomic orbitals can be combined to form a single hybrid orbital.
D. The type if hybrid orbital varies depending on the specific combination of atomic orbitals.
select all that apply which of the following actions are permitted in balancing a chemical equation?
When all coefficients are multiplied by a single factor, The following actions are allowed while balancing a chemical equation: adding coefficients in front of reactant and product formulations.
How can chemical equations maintain balance?Equal numbers and types of each atom appear on both sides of balanced chemical equations . Coefficients in a balanced equation must be the simplest whole number ratio. Chemical processes always retain mass.
What is a simple chemical equation?A chemical equation is a symbol- and formula-based symbolic representation of a chemical reaction, with the reactant entities supplied on the left side and the product entities given on the right.
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What does a sanitizer kit measure Servsafe?.
The correct answer is that the test is done to measure the strength in ppm.
A sanitizer test kit is used to test the strength of the sanitizer.
A sanitizer is a highly viscus liquid which is used to keep the body surface clean from the micro organisms like the bacteria.
There is a proper test conducted to check the strength of the sanitizer.
It is usually done to check if the sanitizer is powerful enough to shield against such organisms.
In this test, the sanitizer is tested by its strength and the value is always in parts per million(ppm).
This test is done in various ways depending on the type of sanitizer.
For example, the strips of chlorine-based sanitizers are dipped into the sanitizing solution, then immediately remove and compare to the color chart. Then this color indicates a value and the value is the parts per million or ppm.
Therefore, the sanitizer testing kit tests the sanitizer based on the concentration of parts per million (ppm).
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