Answer:
Explanation:
The knowledge of venom composition as well as structure and properties of its components on the one hand may give the clue for better treatment of bites and stings on the other hand it may lead to the discovery of new medicines.
write the balanced net ionic equation for the reaction when aluminum nitrate and potassium iodide are mixed in aqueous solution. if no reaction occurs, simply write only nr. be sure to include the proper phases for all species within the reaction.
The balanced net ionic equation for the reaction when aluminum nitrate and potassium iodide are mixed in aqueous solution is:-
The net ionic equation is : Al3+(aq)+3OH−(aq)→Al(OH)3(s)
What is net ionic equation?
The net ion equation must be balanced by both mass and charge. Mass balance means that the mass of each element is the same on the product and reactant sides. Charge balancing means ensuring that the total charge is equal on both sides of the equation.
Therefore, The balanced net ionic equation for the reaction when aluminum nitrate and potassium iodide are mixed in aqueous solution is:-
The net ionic equation is : Al3+(aq)+3OH−(aq)→Al(OH)3(s)
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Pure sodium metal placed in water will spark and ignite, as well as form bubbles and gas. What are the signs that this is a chemical reaction? check all that apply.
Predict the neutral organic product of the following reaction. When drawing hydrogen atoms on a carbon atom, either include all hydrogen atoms or none on that carbon atom, or your structure may be marked incorrect.
The oxygen of water molecule being electron rich abstracts the proton from the oxonium ion to form hydronium ion.
What is neutral organic?
The microbial decay of dead plant and animal matter is what causes NOM to exist in the environment. The Chemistry of Silica and Zeolite-Based Materials
What is hydrogen atom?
The chemical element hydrogen is represented by the atom known as hydrogen. The Coulomb force holds one negatively charged electron and one positively charged proton to the nucleus of the electrically neutral atom, which has one proton that is positively charged. Of the universe's total baryonic mass, atomic hydrogen accounts for about 75%.
The given reaction is an acid catalyzed hydration of alkenes. The hydration reaction converts an alkene to an alcohol.
Hydration of alkenes involves the conversion of alkenes to alcohols via the addition of water. Acid catalyzed hydration involves the presence of an acid such as sulphury acid.
Since, a carbocation is formed in the acid catalyzed hydration of alkenes, hence carbocation rearrangement occurs to form a more stable carbocation.
In the above step, the attack of double bond on the hydronium ion takes place to form a 2° carbocation. The direction of electrons is from the electron rich π bond to proton.
In the above step, the nucleophilic attack of water takes place on the secondary 2° carbocation to form the oxonium ion. The direction of movement is from the electron rich water molecule to the electron deficient carbocation species.
Finally, in the above step, the deprotonation of the oxonium ion takes place to form cyclooctane. The oxygen of water molecule being electron rich abstracts the proton from the oxonium ion to form hydronium ion.
Therefore, the oxygen of water molecule being electron rich abstracts the proton from the oxonium ion to form hydronium ion.
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at a certain temperature, the solubility of strontium arsenate, sr3(aso4)2, is 0.0500 g/l. what is the Ksp of this salt at this temperature?
According to the given statement Ksp for strontium arsenate is 9.98×·10⁻³
What is the purpose of arsenate?Arsenic is used in industry as an alloying agent in addition to being used to make glass, pigments, linens, cardboard, metal glue, wood preservatives, and ammunition. Arsenic is also used in several pesticides, feed additives, and pharmaceuticals, as well as in the tanning of skins.
Balanced chemical reaction (dissociation):
Sr₃(AsO₄)₂(s) → 3Sr²⁺(aq) + AsO₄³⁻(aq).
s(Sr₃(AsO₄)₂) = 0.0650 g/L.
s(Sr₃(AsO₄)₂) = 0.0500 g/L ÷ 540.7 g/mol = 9.24 mol/L.
s(Sr²⁺) = 3s(Sr₃(AsO₄)₂).
s(AsO₄³⁻) = 2s(Sr₃(AsO₄)₂).
Ksp = s(Sr²⁺)³ · s(AsO₄³⁻)².
Ksp = (3s)³ · (2s)².
Ksp = 108s⁵.
Ksp = 108 · (9.24 mol/L)⁵ = 9.98×·10⁻³
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g draw a picture showing your hypothesis about how they do this. the following items should be included in the picture: protons, atp synthase, electron carriers/transport proteins and molecules, inorganic electron donor, inorganic electron acceptor
A premise drawn from some evidence is known as a hypothesis. This is the starting step of any study that converts the research questions into predictions, including protons and electron carriers.
Inorganic electron acceptor, inorganic electron donor, and transport proteins and molecules are also included. Variables, the population, and how the variables are related are all included as components. Any hypothesis that is put to the test in order to determine how two or more variables relate to one another is called a research hypothesis. Unchangeable and negatively charged, an electron is a part of an atom. Aside from the atom nucleus, electrons surround it. The mass of an electron is extremely small compared to that of a neutron or proton, and it carries one unit of negative charge (1.602 x 10 -19 coulomb).
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Enter a chemical equation for HClO4(aq) showing how it is an acid or a base according to the Arrhenius definition. Consider that strong acids and bases dissociate completely. Express your answer as a chemical equation. Identify all of the phases in your answer. Enter a chemical equation for HBr(aq) showing how it is an acid or a base according to the Arrhenius definition. Consider that strong acids and bases dissociate completely.Express your answer as a chemical equation. Identify all of the phases in your answer. Enter a chemical equation for Ca(OH)2(aq) showing how it is an acid or a base according to the Arrhenius definition. Consider that strong acids and bases dissociate completely.Express your answer as a chemical equation. Identify all of the phases in your answer.
HClO₄(l) → H⁺ (aq) + ClO₄⁻ (aq) for HClO4(aq) , HBr(aq)→H+(aq)+Br−(aq) for HBr(aq) and Ca(OH)₂ → Ca²⁺ + 2OH⁻ for Ca(OH)2(aq) are the equation showing how it is an acid or a base according to Arrhenius definition.
A material is referred to as an Arrhenius acid if it contains a hydrogen atom and readily emits hydrogen ions or protons in water, in accordance with the Arrhenius theory. The quantity of replaceable hydrogen ions in an Arrhenius acid is referred to as its basicity. Chloride (Cl-) and hydronium (H3O+) ions are created when hydrochloric acid is dissolved in water.
A Lewis acid is a molecule or ion that can make a covalent bond with an electron pair or donate a proton, depending on its Brnsted-Lowry or Brnsted-Lowry acid properties. The proton donors, also referred to as Brnsted-Lowry acids, make up the first group of acids.
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if 32.5 mol32.5 mol of an ideal gas occupies 36.5 l36.5 l at 11.00 ∘c,11.00 ∘c, what is the pressure of the gas?
The pressure exerted by the gas is 210.417 atm at 11°C.
It is given that the number of moles is 32.5 and this occupies a volume of 36.5L at 11°C which is 284K. To find the pressure of the gas, the following formula is used:
PV = nRT
By rearranging the formula we get pressure as,
P = (nRT)/V
Here, n is the number of moles, R is the gas constant which is given as 8.314, T is the temperature in Kelvin and V is the volume in liters. By substituting all the values into the formula we get,
P = (32.5x8.314x284)/36.5L
P = 76738.22/36.5
P = 210.41699atm
This value could be approximated as 210.417atm
Therefore, the amount of pressure exerted by the gas of 32.5 moles of 36.5L at 11°C is 210.417 atm.
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(a) the disorder alters glucose metabolism. describe the atoms and types of bonds in a glucose molecule.
in the disorder alters glucose metabolism, Covalent bonds hold carbon, hydrogen, and oxygen atoms together in a glucose molecule.
This glucose molecule is made up of six carbon atoms bonded together in a chain, along with oxygen and hydrogen atoms. C6H12O6 is the chemical formula for glucose. Glucose is an aldehyde-containing monosaccharide (-CHO) Covalent bonds form between nonmetals in general. The formation of ions occurs when one metal and a nonmetal convers. Carbon, hydrogen, and oxygen combine to form glucose. Because they are all nonmetals, they form covalent bonds.
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what is the weight percent of vitamin c in a solution made by dissolving 2.60 g of vitamin c, c6h8o6 , in 55.0 g of water?
The weight percent of vitamin c in a solution made by dissolving 2.60 g of vitamin c, c6h8o6 , in 55.0 g of water 4.51 %
The percent by weight can be expressed as:
Percentage weight = solute /solution × 100 %
Now we have that the mass of the solution is
Mass of solution = mass of solute + mass of solvent
Mass of solution = 2.60g + 55.0g
Mass of Solution = 57.6g
Percentage weight = 2.60/57.6 × 100 = 4.51 %
When one or more solutes are dissolved in a solvent, the result is a homogenous mixture known as a solution. a solvent is a substance that helps a solute dissolve so that a homogenous mixture results. When a substance dissolves in a solvent, it forms a homogenous mixture, which is known as a solute.
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what atomic or hybrid orbital on the central i atom makes up the sigma bond between this i and an outer f atom in iodine pentafluoride, if5 ? orbital on i what are the approximate f-i-f bond angles ? (list all possible separated by a space) .
The electronic configuration of iodine is [Kr] 4d10 5s2 5p5.
During chemical bonding, two 5p electrons of iodine get excited and shift to two separate empty 5d atomic orbitals. The 5s, three 5p, and two 5d atomic orbitals of iodine hybridize to yield six sp3d2 hybrid orbitals.
One of these six hybrid orbitals contains paired electrons. These paired electrons are situated as a lone pair on the central I atom in IF5. The remaining five sp3d2 hybrid orbitals contain a single electron each which they use for sigma bond formation with the p orbitals of fluorine atoms in IF5, one on each side of the molecule, as shown below.
The F-I-F bond angle in the IF5 molecule is 81.9°. Electronic repulsions present in the molecule distort the geometry or shape of the molecule and decrease the bond angle.
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try creating a flow chart that traces the flow of energy through your body. what products increase entropy of you and your surroundings?
Energy and energy transformation are depicted graphically and mathematically using energy flow diagrams, also known as energy flow charts. Primary energy used as unprocessed fuels to feed a system, energy supply, conversion or transformation, losses, and energy being used can all fall under this category.
When solid or liquid reactants produce gaseous byproducts, entropy increases. When liquid products are formed from solid reactants, entropy also rises. The environment emits heat, and the additional heat raises the entropy of the environment. There are more options for how to distribute the energy over the molecules when more energy is added to the environment. Thus, raising the temperature also raises the environment's entropy. Energy and energy transformation are depicted graphically and mathematically using energy flow diagrams, also known as energy flow charts. Primary energy used as unprocessed fuels to feed a system, energy supply, conversion or transformation, losses, and energy being used can all fall under this category.
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which of the following statements correctly describe the relative stabilities of resonance forms? select all that apply. multiple select question. a resonance structure with multiple bonds is always preferred to a resonance structure with only single bonds. a resonance structure with like charges on adjacent atoms is more stable than one with opposite charges on adjacent atoms. a resonance structure with formal charges closer to zero on individual atoms is preferred. a resonance structure is more stable if a negative charge resides on a more electronegative atom.
A resonance structure with formal charges closer to zero on individual atoms is preferred and resonance structure is more stable if a negative charge resides on a more electronegative atom.
Chemistry concept known as the theory of resonance that postulates that a molecule's actual normal state is represented by a combination of several alternative distinct structures rather than by a single valence-bond structure. The molecule is then said to have a structure that is a resonance hybrid of these structures or to resonate among the various valence-bond structures. The molecule is said to be stabilized by resonance when the calculated energy for a resonance hybrid is lower than the energies of any of the alternative structures. Resonance energy is the difference between the energies of any alternative structure and the energies of the resonance hybrid.
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s cl2 2h2oh2s 2hclo in the above reaction, the oxidation state of sulfur changes from to . how many electrons are transferred in the reaction?
The chemical created determines the oxidation state of sulfur. Sulphur can widen its valances because it has an empty d orbital because of its larger size. As a result, it displays oxidation states of 2, 2, 4, and 6, respectively.
The sulfur atom's oxidation number drops from 0 to -2. The following are the guidelines for determining oxidation numbers: Ions have an oxidation number of 4, while elements have an oxidation number of 5, more electronegative elements have an oxidation number of 6, and less electronegative elements have an oxidation number of 7.
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if 0.00849 moles of bai₂ makes 0.00283 moles of precipitate and 0.00630 moles of na₃po₄ makes 0.00315 moles of precipitate, which reactant is limiting?
In the given statement, the reactant that is limiting is BaI₂.
What is BaI₂?
BaI₂ is a chemical compound composed of barium and iodine. It is an ionic compound, meaning that the barium and iodine atoms are held together by electrostatic forces. BaI₂ is a yellow-brown colored solid at room temperature. It is used in the production of certain semiconductor materials and in medicine as a contrast agent for imaging studies.
The reactant is limiting because the amount of BaI₂ that is needed to produce the same amount of precipitate (0.00315 moles) is double the amount of Na₃PO₄ that is needed to produce the same amount of precipitate (0.00283 moles). This means that for the reaction to proceed, there must be twice as much BaI₂ as Na₃PO₄, and since there is only 0.00849 moles of BaI₂, the reaction will be limited by the amount of BaI₂ available.
What is Precipitation reaction?
A precipitation reaction is a type of chemical reaction in which two solutions are mixed together to form an insoluble salt, which is referred to as the precipitate. This type of reaction is often used to identify the presence of certain ions in solution, as the formation of a precipitate indicates that the ions in question are present.
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continue adding salt to the solution until undissolved salt remains on the bottom of the container. this is now a (a) solution because no more sodium chloride can dissolve. the simplest ratio of ions in the solution is (b) sodium ion to (c) chloride ion and the simplest ratio of ions bound in the solid is (d) sodium ion to (e) chloride ion.
Continue adding salt to the solution until undissolved salt remains on the bottom of the container. this is now a (a)saturated solution because no more sodium chloride can dissolve. The simplest ratio of ions in the solution is (b)1 sodium ion to (c) 1 chloride ion and the simplest ratio of ions bound in the solid is (d) sodium ion to (e) chloride ion.
Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by means of water molecules, as this diagram indicates. as soon as this happens, the salt is dissolved, resulting in a homogeneous solution .
Dissolving a solid in liquid, inclusive of desk salt in water, is a bodily exchange because only the country of the matter has changed. A not unusual misconception approximately dissolving is that heating and/or stirring are required for the dissolving process to arise. on this observe, quantitative experimental evidence turned into accrued and analyzed to illustrate that neither heating nor stirring is required for dissolving.
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three of the four structure have the same bonding sequence. which structure is an isomer of the other three?
The compound mentioned in option D having structure which is isomer of other three given option. And the rest three compound are same. Hence the correct option is D.
What are some examples of isomers?Isomers are substances that have exactly the same number of atoms, i.e., the same empirical formula, but differ from one another by the way in which the atoms are arranged. Several isomers with the formula C₈H₁₀ include ethylbenzene, m-xylene, p-xylene, and o-xylene. Isomers are chemical compounds that have the same chemical formula but have different characteristics and atom arrangements in the molecule. Isotopes are various atoms of a single element. Isomers are distinct substances with the same molecular structure. The number of neutrons distinguishes isotopes from each other, whereas the arrangement of the atoms distinguishes isomers.
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The complete question is as follows:
what atom would be created if uranium lost 10 protons?
Atomic number of uranium is 92. Thus it contains 92 protons and 92 electrons. When it loses 92 protons the atom formed with 82 protons is lead (Pb).
What is uranium?Uranium is 92nd element in the periodic table. Uranium is an actinide thus classified into the f-block elements. It is a radioactive element and is very unstable.
Actinides such uranium undergo nuclear decay to form stable atoms. The number of electrons and number of protons will be equal in the neutral atom.
Uranium contains 92 protons, when 10 protons are removed it forms an atom with 82 protons. That is lead . Lead is the 82nd element n periodic table.
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what is the pressure in a region of outer space where there is 2 molecule/cm3 and the temperature is 5 k ?
1.38*10⁻¹⁶ Nm⁻² is the pressure in a region of outer space where there is 2 molecule/cm3 and the temperature is 5 k
What is an illustration of pressure?By pressing a knife on some fruit, one can get a straightforward illustration of tension. The surface will not be sliced if you press the flat section of the blade against the berry. The force is dispersed over a broad radius (low pressure).
Briefing:P = nKT/V
= 2*1.38*10⁻²³*5/10⁻⁶
= 1.38*10⁻¹⁶ Nm⁻²
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The half-life of 55cr is about 2. 0 hours. The delivery of a sample of this isotope from the reactor to a certain laboratory requires 12 hours. About what mass of such material should be shipped in order that 1. 0 mg of 55cr is delivered to the laboratory?.
The half-life of 55cr is about 2. 0 hours. The delivery of a sample of this isotope from the reactor to a certain laboratory requires 12 hours. The bare minimum of such material that should be shipped is 63.9 mg= 64 mg.
Given Information: 1.8 hours is the half-life. Formula: 0.693/k is the half-life.Where: k is the rate constant.k=0.693/1.8 =0.385 hr^-1
To determine the initial concentration, use the following formula: In the A/Ao=-kt
Where: A represents the final concentration.
A o stands for initial concentration.
It is now time
Using the exponential function on both sides:
A A。 A。 -kt = e A -kt = e A = 63.9mg
The bare minimum of such material that should be shipped is 63.9 mg= 64 mg.
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what is the calcium ion concentration, [ca2 ], in 1.5m calcium chloride, cacl2? what is the chloride ion concentration, [cl1-]?
For every mole of calcium chloride you get one mole of Ca2+ and 2 moles of chloride. So the molarity of calcium 2+ is 1.5 M and the molarity of the chloride is 3.0 M
What is Molarity?
Since most reactions take place in solutions, it's critical to comprehend how the substance's concentration is expressed in a solution. The quantity of compounds in solution can be determined in a variety of methods.
The concentration of salts in the alkaline solution is represented by its molarity (M). The amount of fundamental substance needed to prepare the solution rises as molarity does. Molarity is crucial for the growth of strength.
The number of moles of dissolved solute per litre of solution is the definition of molarity, a unit of concentration. Molarity is defined as the number of millimoles per millilitre of solution by dividing the number of moles and the volume by 1000.
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Calculate the volume (in ml) of 0. 100 m cacl2 needed to produce 1. 00 g of caco3(s).
1 gramme of calcium carbonate is needed to produce 1. 00 g of caco3(s).
Calcium carbonate does have a molar mass of 100.09 g/mol.
As a result, the number of moles of calcium carbonate = mass/molar mass. =1g/100.09g/mol = 0.01 mol, It is given the reaction of sodium carbonate and calcium chloride. CaCO3 + 2NaCl = Na2CO3 + CaCl2
One mole of calcium chloride reacts with one mole of sodium carbonate to produce one mole of calcium carbonate and two moles of sodium chloride.
one mole CaCl2 = one mole CaCO3
0.01 mol f CaCl2 = 0.01 mol CaCO3.
Calcium chloride molarity = 0.1 M
Molarity is characterised as the number of solute moles divided by the amount of solution.
volume of solution = 0.1 L = 100 mL = 0.01 mol/0.1 M
As a result of this, the volume of 0.1 M calcium chloride is 100 mL.
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what is the electron-pair geometry for n in nf3? fill in the blank 4 there are fill in the blank 5 lone pair(s) around the central atom, so the molecular geometry (shape) of nf3 i
Electron Pair Geometry determines the spatial arrangement of a molecule's bonds and lone pairs. The electron pairs repel each other whether or not they are in bond pairs or in lone pairs. Thus, electron spread themselves as far as possible to avoid repulsion.
What is electron pair geometry of NF3, H2O, NOBr and GeH4 ?
NF3 (Nitrogen trifluoride)
Electron pair geometry is tetrahedral
There is one lone pair. Geometry would be then pyramidal
NOBr (Nitrosyl Bromide)
Electron pair geometry is triangular planar
One lone pair then geometry will be bent or angular
H2O (water)
Electron pair geometry is Tetrahedral
Two lone pair then geometry will be bent or angular
GeH4 (Germanium Hydride)
Electron pair geometry is Tetrahedral
Zero lone pair then geometry will be Tetrahedral
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Write the electron configuration of the oxygen atom?
Answer:
I think it's 2s^2 2p^4
Explanation:
NOT really sure but, I think its 2s^2 2p^4
Please, someone correct me if im wrong
ANSWER ⬇️⬇️⬇️⬇️⬇️⬇️
Answer:
electronic config. of oxygen = 2,6
what is the molecular compound name for hydrazine, n2h4? multiple choice question. a) trinitrogen pentahydride b) dinitrogen hydride c) dinitrogen tetrahydride d) trinitrogen quatrohydride
The molecular compound name for hydrazine, N₂H₄ is dinitrogen tetrahydride.
Hydrazine, N₂H₄ is an inorganic compound which is also known as diamine or dinitrogen tetrahydride. It is named so because it consists of two nitrogen and four hydride atoms. It is a flammable liquid with a strong pungent smell like ammonia. It also acts as a strong base.
Some uses of hydrazine are:
Sodium azide, the component used in air bags is produced from hydrazine.It is used in manufacturing pharmaceuticals.It is used in agricultural fields such as an ingredient in insecticides, pesticides and fungicides.It is used in industrial boilers to control the pH of water.Thus, option C, dinitrogen tetrahydride is the correct answer.
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There’s three pictures because I couldn’t fit all of the question and answers in one but please help me it’s due soon
And I will mark brainliest
The reaction depicted in option D would not occur.
What is the reaction that would not occur?We know that a chemical reaction has to do with the interaction between species that are combined in a system. As the interaction is taking place, there would be a rearrangement of the atoms of the substance and a recombination of the atoms so as to obtain the products.
We can see that the kind of reaction that we are have here is a single replacement reaction. This implies that one of the species is replaced by the specie with which it reacts.
This is only possible if it is reactaing with a specie that is higher than it in the electrochemical series of the elements. The reaction in option D would not occur because the bromine is less than the chlorine in the electrochemical series.
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some average bond ebtalpiesinb are as follows, wharf us the enthalpy change ft he formation of hydrogen brmide from hyrogen and bromine
The amount of heat released or absorbed when a chemical reaction occurs at constant pressure is referred to as enthalpy change. An exothermic reaction is a chemical reaction or physical change that produces heat. Heat is produced as a byproduct of the reaction.
(d) Around 560°C, the reaction becomes spontaneous. 13-36. The process entropy change: 2 H(g) H2(g) is -98.74 J/mol-K. The H2 molecule has an enthalpy of atom combination of 435 kJ/mol. As a result, this is a redox reaction. However, there is no change in the oxidation state of the reactants in the other reactions listed in the options. As a result, those are not redox reactions. The correct answer is option A, which is $H 2 + Br 2xrightarrow2HBr$.
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part i: reviewing acid nomenclature name these acids: hclo h2cr2o7 h2co3 h3po4 what is the formula for nitric acid? 3. what is the formula for nitrous acid? part ii: acid and base dissociation (ionization) equations hydroiodic acid: 2. strontium hydroxide: 3.barium hydroxide: 4. sulfuric acid: part iii: neutralization reactions (include the molecular and new ionic equations for all reactions) done in class: nitric acid (strong acid) and sodium hydroxide (strong base). lithium hydroxide (strong base) and carbonic acid (weak acid). magnesium hydroxide(weak) and chlorous acid (weak). aluminum hydroxide(weak) and sulfuric acid (strong). write the chemical reaction when lithium hydroxide(strong) is mixed with phosphorous acid(weak). write the chemical reaction when potassium hydroxide(strong) is mixed with hydrobromic acid(strong). write the chemical reaction when barium hydroxide(strong) is mixed with acetic acid (weak). write the chemical reaction when iron (ii) hydroxide(strong) is mixed with phosphoric acid(weak).
Hydrochloric acid + sodium hydroxide -> sodium chloride + water
Sulphuric acid + copper hydroxide -> copper sulphate + water
Nitric acid + sodium hydroxide -> sodium nitrate + water
Hydrochloric acid + calcium hydroxide -> calcium chloride + water
Sulphuric acid + potassium hydroxide -> potassium sulphate + water
Hydrochloric acid + lithium hydroxide -> lithium chloride + water
Nitric acid + magnesium hydroxide -> magnesium nitrate + water
A strong acid is an acid that ionizes in water to give all its hydrogen ion. Weak acid only ionize to a certain degree. Acetic acid (CH3COOH) only ionize to give one hydrogen ion despite having other hydrogen atom.
A strong base is a base that ionizes in water to give all it hydroxide ion. Sodium hydroxide(NaOH) ionizes to give all its hydroxide ions.
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the pka for acetic acid is 4.75. if you have a solution containing 0.25 m acetate and 0.075 m acetic acid, what is its ph?
The pH of the given solution is 5.27.
In chemistry, pH, which was originally denoting as potential of hydrogen, refer to a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have lower pH values than basic or alkaline solutions.
According to the given information,
pKa of acetic acid = 4.75
Concentration of acetic acid = 0.075m
Concentration of acetate salt = 0.25m
The pH of a simple acetate solution is given by:
pH = pKa + log(salt/acid)
Hence,
pH = 4.75 + log(0.25/0.075)
pH = 4.75 + 0.522
pH = 5.27
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What mode of transportation is limited to specialized products such as liquids and gases?.
Transport via pipelines is only possible for specialist goods like liquids and gases.
Describe gas.Gas is a state of matter that lacks both a defined shape and volume. Compared to other states pf material, such as liquids and solids, gasses have a lower density. Particles, which have a great deal of kinetic energy but aren't very attracted to one another, are separated by a lot of free space.
Which 10 gases make up the majority of the atmosphere?The Earth's atmosphere is made up of approximately % ammonia, 21 percent oxygen, 0.93 % argon, 0.04 % carbon dioxide, and small traces of bright blue, helium, methane, krypton, ozone, and hydrogen in the form of water vapor, according to the educational website Vision Starting to learn (opens in new tab).
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what is the electron pair geometry for an ammonia molecule, nh3? group of answer choices bent linear tetrahedral trigonal pyramidal none of these
The electron pair geometry for an ammonia molecule, NH₃ is tetrahedral.
According to VSPER theory :
for NH₃ : number of electron pairs arre:
Number of electron pairs = 1 / 2 [ V + N -C + A]
where V is number of valence electrons on central atom = 5
N = number of monovalent electron = 3
C = charge of cation = 0
A = charge of anion = 0
number of electron pairs = 1 / 2 [ 5 + 3 ]
= 4
The 4 electrons group are present out of which three are bonding groups and one present as lone pair of electron therefore the electron geometry is tetrahedral and the molecular geometry is trigonal pyramidal.
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