Around the centre beryllium atom, there are two zones of electron density that will arrange themselves in a linear geometry. There must be two unhybridized p orbitals in BeCl2 since beryllium must be sp hybridised.
The areas of electron density are corresponding to hybridised orbitals. The number of unhybridized p orbitals can be calculated by deducting the number of electron density regions from the maximum number of hybridised 1s and 3p orbitals, which is 4.
What is the unhybridized orbital?
The common atomic orbitals that we are familiar with are those that are not hybridised. Orbitals that are hybridised are made up of a variety of unhybridized orbitals. These orbitals aid in determining the shape of molecules by illuminating the actual bonding process.
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this reaction proceeds through a series of two elimination reactions. which elimination do you believe is rate determining in this process and why?
It will be difficult for base to perform elimination reaction.
What is elimination reaction?
Any of a class of organic chemical events known as elimination reactions occurs when a pair of atoms or groups of atoms are extracted from a molecule, typically with the help of acids, bases, or metals and, in certain circumstances, by heating to a high temperature.
What is reaction?
A chemical reaction is the transformation of one or more chemicals, known as reactants, into one or more new compounds, known as products. Chemical components or compounds make up substances.
The reaction of the acid and bases are its too bulky, the comparison between acid and base, base need more energy to eliminate so its hard for base to eliminate.
Therefore, it will be difficult for base to perform elimination reaction.
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How does the strength of the imfs in water compare to the strength of the imfs in ethanol?.
The strength of intermolecular forces in water is greater than ethanol.
How is the strength of the intermolecular forces in water stronger than the intermolecular forces in ethanol?
Water has a stronger intermolecular force than ethanol. Because oxygen is bonded with two H-atoms in [tex]H_{2}[/tex]O, the hydrogen-ethanol bond contact is stronger than that of ethanol. Carbon has an electronegativity of 2.5, hydrogen has an electronegativity of 2.2, and oxygen has an electronegativity of 3.44.
Because O in ethanol is coupled to one C and one H atom, the electronegativity difference between O and H is therefore somewhat larger than the electronegative difference between O and C. As a result, oxygen in [tex]H_{2}[/tex]O generates a larger amount of negative charge than oxygen in ethanol.
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what changes in the energies would you expect by covalently linking the binding groups (association 1 compared to association 4)?
The changes in the energies would be ΔG = -ve, ΔH = -ve, ΔS = +ve.
What is Gibbs free energy?
Gibbs free energy, denoted G, combines enthalpy and entropy into a single value. The equation for Gibbs free energy is: ΔG=ΔH−TΔS where G represents the change in Gibbs free energy, H represents the change in enthalpy, T represents the temperature, and S represents the change in entropy. For a reaction to be spontaneous, G must always be negative.
As we know,
ΔG = ΔH -TΔS
ΔG = Gibbs free energy
ΔH = enthalpy
T = temperature
ΔS = Entropy
So, for spontaneous process
ΔG = -ve
ΔH = -ve
ΔS = +ve
The changes in the energies would be ΔG = -ve, ΔH = -ve, ΔS = +ve.
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During the synthesis and purification of biodiesel, what should be done if an emulsion forms?
A. Add sodium chloride and swirl the mixture.
B. Add water and stir the mixture with a glass stirring rod.
C. Cool the mixture in an ice bath.
D. Warm the mixture over low heat on a hot plate.
A mixture is a substance that contains two or more components which are mixed together but they are not chemically combined to each other.
What should be done if an emulsion forms?The salt and sand can be separated on the basis of solubility, as we know the salt is chemically known as sodium chloride, which have good solubility in water. The most general method is the mixture is taken into a flask or beaker and water is added with stirring, where salt get dissolved and sand remain as it is, because NaCl is capable enough to form hydrogen bonding with water, while sand have absence of such property. Then this solution containing insoluble sand is filtered by using filter paper. The sand is received in filter paper while filtrate in beaker is evaporated by boiling it in order to receive salt as residue.The best way to obtain pure, solid household salt from a solid mixture of household salt and sand is to "add water, stir, filter and evaporate the filtrate".The best way to obtain pure, solid household salt from a solid mixture of household salt and sand is to "add water, stir, filter and evaporate the filtrate".To learn more about synthesis refer to:
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if an orbital in the 2p subshell is completely filled before each orbital in the 2p subshell is partially filled, it is a violation of which rule?
If an orbital in the 2p subshell is completely filled before each orbital in the 2p subshell is partially filled, it is a violation of Hund's rule.
Every atomic orbital within a sublevel is singly occupied before it is doubly occupied, and all singly occupied orbitals have electrons with the same spin, according to Hund's Rule of Maximum Multiplicity, also known as Hund's Rule. Before pairing up with another electron in the same orbital, electrons will always occupy their own suborbital. When drawing molecular orbital diagrams and electron configurations, this rule is helpful. When applying Hund's Rule, pairing electrons twice before it is necessary is the most frequent error made. Electrons should not be paired when filling out p orbitals until each suborbital has one electron.
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10.0 ml 10.0 ml of 0.10 m 0.10 m sodium chloride solution is mixed with 10.0 ml 10.0 ml of 0.25 m 0.25 m silver nitrate solution. what mass of silver chloride should form from this reaction?
The mass of silver chloride should form from this reaction is 27.97%.
What is mass?
It is a dimensionless quantity that expresses a particle or object's mass. The accepted unit of mass under the International System (SI) is the kilogram.
What is reaction?
A chemical reaction is a process in which one or more substances, also known as reactants, are changed into one or more distinct substances, known as products. Either chemical elements or chemical compounds make up substances.
Given, MMNaC=0.1M;V NaCl=50 mL
M AgNO3 =0.25M ;VAgNO3=25 mL
AgNO3+ NaCl → AgCl↓ + NaNO3
No. of millimoles of NaCl=MNaCl × VNaCl=5 mMoles
No. of millimoles of AgNO3=MAgNO3 ×VAgNO3=6.25 mMoles
So, AgCl formed is 5m Moles
Mass of AgCl formed (5×10−3)(143)=0.715 g
% Yield =0.2/0.715×100=27.97%
Therefore, mass of silver chloride should form from this reaction is 27.97%.
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TRUE/FALSE. essential amino acids are those that animals cannot synthesize on their own and must obtain them from outside dietary sources.
false. Only from external sources, such as their diet, can organisms obtain essential amino acids (such as lysine and isoleucine).
Can animals produce critical amino acids on their own?Important amino acids: In order for the animal to function normally, it needs to be fed these amino acids, which it cannot produce on its own.
The body is unable to manufacture necessary amino acids.The body cannot manufacture essential amino acids. They have to come from food as a result. These nine amino acids—histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine—are considered to be essential for human health.
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a galvanic cell is powered by the following redox reaction: (aq) (aq) (s)(g) (l) (aq) answer the following questions about this cell. if you need any electrochemical data, be sure you get it from the aleks data tab.
The redox reaction in the question is missing. The reaction is :Cl 2(g) + Mn 2 +(aq) + 2 H-On â 2 Cl-(aq) + MnO2(s) + 4 H + (aq) 2.59V. In one species there is oxidation and in the other species there is reduction process. a galvanic cell is powered by the following redox reaction: (aq) (aq) (s)(g) (l) (aq) need any electrochemical data, be sure you get it from the aleks data tab.
Initially, oxygen-based processes that include an element were referred to as oxidation. Example: The oxidation of magnesium occurs when magnesium metal reacts with oxygen to produce magnesium oxide. A substance gains one or more electrons during the reduction process. Either an oxygen atom or electronegative atoms are lost. gains a hydrogen atom or an atom with an electric charge.A galvanic cell or voltaic cell is an electrochemical device that uses spontaneous redox reactions to transform chemical energy into electrical energy. Galvanic cell The voltaic cell is an electrochemical device that uses chemical reactions to produce electricity.
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A rock sample originally contains 3.13 mg of U-238. How much Pb-206 will be in the rock sample when it is 4.6 × 10^8 years old? The half-life of uranium−238 is 4.51 × 10^9 years.
i know it its 14.8
g g gg g g g g g g
what quantity in moles of precipitate will be formed when 84.9 ml of 0.150 m agno₃ is reacted with excess cacl₂ in the following chemical reaction? 2 agno₃(aq) cacl₂(aq) → 2 agcl(s) ca(no₃)₂(aq)
There will be 0.01 moles of precipitate produced.
The energy released in this nuclear event is more than 100,000 times greater than the energy released in a typical chemical reaction.
When compared to chemical reactions, how much more energy is created by nuclear reactions?
The energy released by nuclei is a million times more concentrated than the energy created by atoms interacting with one another (chemical reactions). Because of this, nuclear weapons are significantly more potent and destructive than conventional weapons.
Are nuclear and chemical energies more potent than one another?
The energies generated in nuclear processes are several orders of magnitude higher than the energies involved in chemical reactions.
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in this experiment, you used 45.0 ml of 1.00 m hcl in each trial. calculate the mass of mg that would produce the maximum amount of heat with 45.0 ml of 1.00 m hcl. the molar mass of magnesium is 24.305 g/mol.
The mass of magnesium that would produce the maximum amount of heat is 0.547 grams.
The chemical reaction between magnesium and HCl is
Mg + 2 HCl → MgCl₂ + H₂
In stoichiometry, the Avogadro's law said that the coefficient for every subtances in the reaction is the ratio for the number of moles for every subtances.
For HCl
The volume = V = 45.0 mL = 0.045 LThe molarity = M = 1.00 MThe number of molesFor Mg
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16. if pyruvate oxidation is blocked, what will happen to the levels of oxaloacetate and citric acid in the citric acid cycle?
Oxaloacetate will decline and citric acid will build up if pyruvate oxidation is inhibited, as they are both components of the citric acid cycle. A crystalline organic substance is oxaloacetic acid.
HO2CC(O)CH2CO2H is its chemical formula. The conjugate base of oxaloacetic acid, oxaloacetate, is a metabolic intermediary in numerous mammalian functions. HOC(CO2H)(CH2CO2H)2 is the chemical formula for citric acid, an organic molecule. This organic acid is weak and colourless. Citrus fruits contain it naturally. It is a biochemical intermediary in the citric acid cycle, a process that all aerobic organisms use to metabolise their food. With the chemical formula C6H8O7, citric acid is a weak acid. There are two variations: monohydrate and water-free (anhydrous). Lemons, oranges, and other citrus fruits typically contain this acid.
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draw the lewis structure for so3 and answer the following questions. how many valence electrons are present in this compound? how many bonding electrons are present in this compound? how many lone pair (non-bonding) electrons are present in this compound?
The Lewis structure of SO₃ is can be seen in the attached image.
The valence electrons present in this compound are: 6 VE for each atom (24 electrons).The total bonding electrons present are: 3 pairs of double bonding (12 electrons).The total lone pair electrons present are: 4 for each O atom (12 electrons/8 pair of electrons).What is the difference between valence, bonding, and lone pair electrons?The difference between those three are:
Valence electrons are the electrons located at the outer shell of an atom. These electrons are the furthest from the nucleus, so they tend to bond with electrons from the other atoms. Bonding electrons are the electrons involve in chemical bonding with the other atom that joins as the bond pairs. There are three types of bonding: single bonding, double bonding, and triple bonding.Lone pair electrons are the valence electrons pair that have not formed a bond with the other atoms.Learn more about bond order here https://brainly.com/question/9713842
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rank the following compounds in order of increasing boiling point, putting the compound with the lowest boiling point first.
Starting with the substance whose boiling point is the lowest. II I III the following compounds in order of increasing boiling point.
A compound example is defined.A substance in science that is created by the chemical joining of two or more distinct components Table salt (NaCl), which is derived from the elements sodium and chloride, and water (H2O), which is created from the elements hydrogen and oxygen, are two examples of compounds.
What eight organic compound examples are there?Carbon and hydrogen are covalently bound to one another, as well as frequently to other elements, to form organic molecules. Examples of organic compounds include benzoic acid, diethyl malonate, propanoic, butanoic, and malonic acids, as well as aromatic and heterocyclic compounds.
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what subatomic particles are removed from gluclose molecules and end up creating water at the end of the electron transport chain
At the end of the electron transport chain, two protons are removed from glucose molecules and combined with two electrons and two oxygen molecules to create two molecules of water.
The protons are removed from glucose molecules during the process of oxidative phosphorylation when the electrons that have been passed along the electron transport chain are used to reduce two molecules of oxygen to water.
This process is known as oxidative phosphorylation and is powered by the energy released from the oxidation of glucose molecules. The protons are removed from the glucose molecules during glycolysis and the Krebs cycle, and they are carried to the electron transport chain where they are used as a source of energy.
The protons are then moved to the mitochondrial membrane where they are used to create a proton gradient. This gradient is used to drive ATP production by the process of chemiosmosis.
Finally, the protons are combined with two electrons and an oxygen atom to form water. This process is driven by the release of energy from the electrons and the protons, which is used to generate adenosine triphosphate (ATP).
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caammonium phosphate is an important ingrediant in many solid fertilizers. it can be made by reacitng aqeous phosphoric acid with liquid ammonia. calculate the moles of ammonia needed to produce 0.085 mol of ammonium phosphae
The moles of ammonia needed to produce 0.085 mol of ammonium phosphate is 0.027 moles.
Ammonium phosphate is the inorganic compound with the method (NH₄)₃PO₄. it is the ammonium salt of orthophosphoric acid. A associated "double salt", (NH₄)₃PO₄(NH₄)₂HPO₄ is likewise identified but is impractical use.
Both triammonium salts evolve ammonia. Ammonium phosphate is the salt of ammonia and phosphoric acid. With a chemical formula of (NH4)3PO4, ammonium phosphate is found in crystalline powder shape, and is soluble in water.
H3PO4(aq) + 3NH4OH(aq) -----------> (NH4)3PO4 + 3H2O balanced equation
Assuming that H3PO4 is not limiting, i.e. it is present in excess, then
0.085 mol NH4OH x 1 mole (NH4)3PO4/3 moles NH4OH
= 0.027 moles
= 0.027 moles (NH4)3PO4
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select true or false: the electron configuration of the outermost electrons of atoms of the halogen group is ns2np7. group starts
False because halogen group atoms' outermost electron does not have the ns2np7 electrical configuration.
Describe halogens.Halogens are nonmetals. At room temperature, bromide is a liquid while fluoride, chlorine, & bromine are all gases. Iodine and astatine are solids.
Why is group 17 known as the halogens?The word "halogen" refers to substances that produce salts. All halogens have seven electrons within their valence shell, which causes them to react with metals quickly to produce salts. Halogens are the eighth group of elements as a result. Since the halogen elements already possess seven valence electrons, they only require one extra electron to complete a full octet. This characteristic makes them more reactive as non-metal groups.
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Be sure to answer all parts.
Calculate the heats of combustion for the following reactions. Use the standard enthalpies of formation.
(a) C2H4(g) + 3O2(g) -> 2CO2(g) + 2H2(l)
(b) 2H2S(g) + 3O2(g) -> 2H2O(l) + 2SO2(g)
_____kJ/mol
the heats of combustion = - 1124.08 kJ/mol, standard enthalpy change in kJ/mol ,ethene C2H4 is + 52.47, hydrogen sulfide H2S is - 52.47 , oxygen O2 is zero
standard enthalpy change in kJ/mol , ethene C2H4 is + 52.47 , hydrogen sulfide H2S is - 52.47 , sulfur dioxide SO2 is - 296.84 , water liquid H2O is - 285.83 , carbon dioxide CO2 is - 393.51 , oxygen O2 is zero
heat = C2H4 + 3O2 ---> 2CO2 + 2H2O
heat = 2CO2 + 2H2O - C2H4 - 3O2
heat = 2( - 393.51) + 2( - 285.83) - ( + 52.47) - 0
heat = - 1411.15 kJ/mol
negative exothermic (heat released)
heat = 2H2S + 3O2 ---> 2H2O + 2SO2
heat = 2H2O + 2SO2 - 2H2S - 3O2
heat = 2( - 285.83) + 2( - 296.84) - 2( - 20.63) - 0
heat = - 1124.08 kJ/mol
negative exothermic (heat released), In the entire world, ethene is mostly utilized as a monomer in the creation of plastic, to create other chemicals, and as an industrial fuel gas. Citrus is also degreened with ethene. Many other organisms, including humans, depend on the oxygen in the air we breathe to maintain life. Plants and several microorganisms produce oxygen during photosynthesis.
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do covalently bonded atoms also form ions?
Yes, covalently bonded atoms can also form ions.
Ions are atoms or molecules that have an electric charge due to an unequal number of protons and electrons. This can occur in covalently bonded atoms when one atom has a greater affinity for electrons than the other, resulting in the transfer of one or more electrons from one atom to the other.
For example, in a covalent bond between hydrogen and oxygen, hydrogen has a greater affinity for electrons than oxygen, so it can pull an electron away from oxygen and form an ionic bond. The oxygen atom now has a negative charge, becoming an anion, while the hydrogen atom has a positive charge, becoming a cation.
In summary, covalently bonded atoms can also form ions due to an unequal electron affinity between the two atoms. This creates an ionic bond, where one atom has a negative charge (anion) and the other has a positive charge (cation).
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The ________ describes the location of electrons and the ________ describes the location of atoms.
A location of electrons is described by the electron-pair geometry, and the arrangement of atoms is described by the molecular structure.
What is electron and example?Being smallest fundamental component of an atom, the electron has a negative charge. In either a neutral atom, there are an equal number both electrons to protons. Each electron and first proton are all that the hydrogen atom has. In contrast hand, the uranium atom possesses 92 protons, which means 92 electrons.
What is electron and proton?These atoms electron, proton, & neutron all make up an atom. The core nucleus of the atom, which contains protons and neutrons is what makes up an atom. The electrons that surround the nucleus. Protons have a positive charge, electron have a negative charge, and neutrons are neutral.
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identify the substitution product that is expected when 1-bromo-1-methylcyclohexane undergoes an sn1 reaction in the presence of water.
A tertiary cyclohaloalkane is 1-bromo-1-methylcyclohexane. This indicates that it hinders carbon-1 sterically. As a result, committing to SN1 is more likely than SN2.
Describe carbon.The number of protons six and letter C are attributed to the chemical element carbon. Four of its four available electrons can be used to create covalent chemical connections because it is a nonmetallic, tetravalent atom. The periodic table's group 14 includes it. Just 0.025 percent of the carbon on Earth is found in its crust.
What uses does carbon serve?Coal, toxic gases, and crude oil are all utilized as fuel in it. It is employed to create a wide range of products, including polymers and steel alloys. Even black ink for printing or painting is produced with it.
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Barium-131 is used in the detection of bone tumors. The half-life of barium-131 is approximately 12 days. How long will it take for the radiation level of barium-131 to drop to 1/4 of its original level?.
Barium-131's radiation level won't reach 1/4 of its initial level for 24 hours.
ln[A] t = -kt + ln[A] 0 is the integrated rate rule for the first-order reaction A's products.
A straight line is produced when the natural log of [A] is plotted as a function of time since this equation has the form y = mx + b.
How is the length of a half-life determined?
The amount of time needed for the reactant concentration to drop to half its initial value is known as the half-life of a reaction. A first-order reaction's half-life is a constant that is correlated with its rate constant:
t 1/2 = 0.693/k.
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As Nicole walks to her dorm room after a study group in the library she sees a backpack being stolen. The neurotransmitter activated during this emergency situation isMultiple choice question.a. norepinephrine.b. endocrine.c. insulin.d. serotonin.
As Nicole walks to her dorm room after a study group in the library she sees a backpack being stolen. The neurotransmitter activated during this emergency situation is a. norepinephrine.
High levels of norepinephrine can also lead to headaches, high blood sugar, and sleep disturbances. Too much norepinephrine also causes anxiety, high blood pressure and heart rate, and organ stress. Drug withdrawal, chronic renal disease, and mental illnesses like PTSD can also result in high norepinephrine levels. Neurons discharge neurotransmitter, which are chemical messengers, into the synapse through synaptic vesicles. Some neurotransmitter work by increasing the neuron's negative electrical charge, which makes it less likely to activate. This is a deterrent effect. Serotonin is an example of this.
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a calorimeter is used to measure the combustion of 14.0 grams of h2 gas under 150. grams of water. the energy measured using the water was 10,432 j. what is the heat lost or gained by the total reaction?
The heat lost or gained by the total reaction is 10,432 J.
Reason:
The amount of energy released by the combustion of the H2 gas and absorbed by the water in the calorimeter.
In other words, this is the enthalpy change (ΔH) of the reaction. Therefore, the heat lost or gained by the total reaction is 10,432 J.
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Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of ni and h+ in the balanced reaction?.
The coefficients in front of Ni and H+ in the balanced reaction are 4 and 10.
What is net ionic equation?
A net ionic equation is defined as an equation that only represents the ions or molecules that are actively involved in the reaction or those that change.
Explanation:
To first set up the half reactions in order to balance this equation in an acidic solution:
When balancing the redox reaction, we get
4Ni2+(aq) + NH4+ (aq) +3H2O (l)→ 4Ni (s) +NO3-(aq) +10H+ (aq)
Therefore, the coefficients in front of Ni and H+ in the balanced reaction are 4 and 10.
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all the substances listed are solids at room temperature. which substance has a simple molecular structure?
Sodium has a simple molecular structure.
What is a molecular structure?
An essential quality of a molecule is its three-dimensional form or configuration. According to the preferred spatial orientation of covalent bonds to atoms with two or more bonding partners, this form is determined. Models are the most effective way to view three dimensional arrangements. We frequently utilize perspective drawings, in which the orientation of a bond is given by the line joining the connected atoms, to show such setups on a two-dimensional surface (paper, blackboard, or screen).
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the selectivity coefficient (kli ,h ) for a li ion-selective electrode is 4.00 x 10-4. when this electrode is placed in 3.44 x 10-4 m li solution at ph 7.20, the potential is -0.333 v. what would be the potential (in mv) if the ph were lowered to 1.10?
The potential is -330.8mv.
What is a selectivity coefficient?
The equilibrium constant for the reaction of displacement by one ligand of another ligand in a compound with the substrate is the selectivity coefficient. Binding selectivity is crucial in biology and chemical separation processes.
According to question,
E1 = constant + 0.05916 log( [Li+] + kLi[H+])
E1 = constant + 0.05916 log( [[tex]3.44 * 10^-^4[/tex]] + [tex]4..0 * 10^-^4 * 10^-^7^.^2[/tex])
We know,
E2 = constant + 0.05916 log( [[tex]3.44 * 10^-^4[/tex]] + [tex][4..0 * 10^-^4 * 10^-^1^.^1][/tex])
subtracting E1 from E2
E2 - E1 = 0.05916 log( [[tex]3.44 * 10^-^4[/tex]] + [tex][4..0 * 10^-^4 * 10^-^1^.^1][/tex] -( [[tex]3.44 * 10^-^4[/tex]] + [tex]4..0 * 10^-^4 * 10^-^7^.^2[/tex])
E2 - E1 = 0.05916 log ([tex]\frac{3.44*10^-^4 *4 *10^-^1^.^1}{3.44 * 10^-^4 }[/tex])
E2 - E1 = 0.0022 = 2.2 mv
E2 = E1 +2.2
E2 = -333 + 2.2 = -330.8mv
The potential is -330.8mv.
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compare and contrast sodium borohydride and lithium aluminum hydride as reducing agents. how are they similar and how are they different.
The key difference between LiAlH4 and NaBH4 is that LiAlH4 may reduce esters, amides and carboxylic acids whereas NaBH4 can't reduce them.
Both LiAlH4 and NaBH4 are the reducing agents. But LiAlH4 is a very strong reducing agent than the NaBH4 because the Al-H bond in the LiAlH4 is
weaker than B-H bond in NaBH4.
Strong reducing agents are electropositive elements that can readily donate electrons in chemical reactions. A strong reducing agent is a weak oxidizing agent. Sodium, hydrogen and lithium are examples of strong oxidants.
Three common reducing agents are sodium borohydride (NaBH4), lithium aluminum hydride (LiAlH4), and diisobutyl aluminum hydride (DIBAH).
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unless otherwise instructed, you may use the periodic table in the chemistry: problems and solutions book for this question. what is the branch of chemistry that examines numerical relationships in chemical reactions?
The branch of chemistry is Stoichiometry
Chemistry's study of numerical relationships in chemical reactions is known as stoichiometry. The Law of Conservation of Mass serves as its foundation. Although the elements that reactants and products are associated with change frequently during a reaction, all chemical reactions contain the same elements as reactants and products.
Any chemical equation must be balanced, and this is done by comparing the number of atoms utilized as reactants and products. In essence, it denotes how the reactant and product are related. There is no qualitative analysis involved; merely a quantitative one. n To determine the amount of moles used in the reactant and product of the particles, stoichiometry is the study of chemical reactions.
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Nuclear decay occurs according to first-order kinetics. Scandium-43 decays with a rate constant of 0. 178 days–1. After 15. 0 days, a sample has a mass of 1. 73 g. What was the original mass of the sample?.
The original weight of the specimen is 25.0 g since, according to the question, nuclear decay follows first-order kinetics.
How crucial is nuclear power?The only significant, carbon-free energy resource that the nation can extensively expand to produce significant amounts of electricity is nuclear energy. When fossil fuels are burned to produce a unit of electricity, nuclear power plants avoid producing a sizable amount of emissions.
Briefing:Given:
r = 0.178 days⁻¹
[tex]N_{t}[/tex] = 1.73 g
[tex]N_{o}[/tex] = ?
[tex]t_{1/2}[/tex] = 0.693/λ
Therefore,
ln[tex]N_{t}[/tex]/[tex]N_{0}[/tex] = -λt
[tex]N_{t}[/tex] = [tex]N_{0}[/tex]e⁻λt
= (1.73)e(-0.131y⁻¹)(30y)
= 25.0 g
Consequently, the sample's starting mass is 25.0 g.
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