The formula for the compound formed between aluminium ions and and phosphate ions is AIPO.
What is ions?An ion is an atom or we can say molecule with the net electrical charge. The charge of an electron is the considered to be a negative by convention and this is the charge is equal to the and opposite to the charge of a proton, which is considered to be positive by convention.
Aluminum Phosphate is a type of phosphate that is formed by the anion PO43- (phosphate) and cation Al3+ (aluminium). And the molecular or chemical formula of Aluminum or it is Phosphate of AlPO.
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How many valence electrons do elements in group 1 have? In group 18 ?
Atoms of group 18 elements have eight valence electrons while group 1 has one valence electron (or two in the case of helium). These substances are extremely stable since they already have a full exterior energy level.
Are valence electrons in group 18?Group 18 members possess eight valence electrons, or eight electrons in their outermost orbit (except helium). They display a steady octet arrangement as a result.
How many valence electrons are present in each group?Because the extra valence electrons can be quickly removed to produce a positive ion, an atom with one or two more valence electrons than a closed shell is extremely reactive.
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what occurs when an atom of chlorine forms a chloride ion
The radius of the chlorine atom increases when it gains an electron. when a chlorine atom transforms into a chloride ion
Who or what is an electron?
A effectively integrate particle with such an opposite electrical charge is called an electron. In contrast to neutrons and protons electrons are not made up of even smaller building blocks. Each electron has an extremely low mass compared to a neutron or proton and carries one units of negatively charged (1.602 x 10-19 coulomb).
What functions do electrons serve?
Java, HTML, and CSS can all be used to create application software that use the Electron framework. Electron enables you to preserve an unified JavaScript codebase and develop pass applications that run on Windows, OSX, and Linux by incorporating Chromium and Node. js into its binaries.
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draw heptanoic acid, which is the carboxylic acid needed to form the ester that smells like grape.
The carboxylic acid required to create the ester with a grape scent is heptanoic acid.
What scent does carboxylic acid have?Numerous carboxylic acids are odorless liquids with color. All of the carboxylic acids with five to ten carbon atoms smell "goaty" (explaining the odor of Limburger cheese).
Why do esters have a smell?Because of their weak intermolecular interactions, esters have a distinctive smell. This stimulates ester molecules to enter the gas phase and hit the nose. Esters float on water because they are not soluble in water, which makes it simple for them to mix in the gas phase. They therefore smell more potent in water.
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What is the Molar mass of NH4C2H3O2
Ammonium acetate, or NH4C2H3O2, has a molar mass and molecular weight of 77.082.
What does the chemical formula NH4C2H3O2 mean?Ammonium acetate is known by this name. There are no synonyms. Acetic acid, ammonium salt is the chemical name.Thus, the equation is NH 4 C 2 H 302. Thus, we have the following four elements, nitrogen, hydrogen, carbon, and oxygen. One nitrogen atom makes up the entire formula. The amount of carbon atoms is excessive, and the number of hard-line tries is four plus three, which equals seven.In ammonium acetate, hydrogen makes up 5.23% of the mass composition.There are two carbon atoms, seven hydrogen atoms, one nitrogen atom, and two oxygen atoms in ammonium acetate.To learn more about Ammonium acetate refer to:
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the sense internal and external stimuli, and send out responses in the form of chemical messengers called .
the sense internal and external stimuli, and send out responses in the form of chemical messengers called Neurotransmitters: The Body's Chemical Messengers. Not only do the neural signals travel via electrical charges within the neuron, but they also travel via chemical transmission between the neurons.
Your body needs neurotransmitters, which are chemical messengers, to function. From one neuron (nerve cell) to the following target cell, they are responsible for transporting chemical signals, or "messages". Another nerve cell, a muscle cell, or a gland may be the next target cell. The seven "small molecule" neurotransmitters (acetylcholine, dopamine, gamma-aminobutyric acid (GABA), glutamate, histamine, norepinephrine, and serotonin) fortunately carry out the majority of the functions. Glutamate. With the help of GABA, glutamate (Glu), the most potent excitatory neurotransmitter in the brain, maintains homeostasis. It is produced by neurons in the cerebral cortex and many of the sensory pathways that enter the central nervous system.
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undiluted sidestream smoke contains higher concentrations of toxic compounds than mainstream smoke. true false
Yes, the statement is true, undiluted side-stream smoke contains higher concentrations of toxic compounds than mainstream smoke.
The fatal potential of substances like lead, formaldehyde, asbestos, and arsenic is widely known. However, understand the specific health effects of exposure or the threshold at which they become toxic. What about the toxic substances we learned about in the news, like mercury in canned tuna, BPA in plastic, and cadmium in jewelry. The Toxic Compounds Portal offers a search engine that enables users to find chemicals by name, CAS number (Chemical Abstract Service registration number), synonym, or trade name. Users have access to additional substance search techniques. Substances that could have an adverse effect on organ systems' health (e.g., cardiovascular or respiratory systems) The chemical class includes metals, pesticides, and volatile organic substances. Individuals in the area looking for precise information on pollutants and how they affect health professionals in toxicology and public health looking for information on toxicity and associated health risk level experts who respond to cases of severe chemical exposure, such as emergency room physicians.
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Name the following Acid: HBO3 if (BO3)^-3 is called the borate ion.
a. borous acid
b. hydrogcn boratc
c. boric acid
d. triboric acid
Option (d) is correct, i.e. tri-boric acid is the following acid: HBO3 if (BO3)^-3 is called the borate ion.
Various borate ion [B2O5]4s, [B3O8]7s, [B4O12]12s, [B5O6(O)5]2s, [B6O13]8s, etc. are made up of trigonal planar B(O)3 or tetrahedral [B(O)4] structural units that are connected by shared oxygen atoms (corners) or atom pairs (edges) into bigger clusters. These anions can further polymerize into endless chains, layers, and frameworks and may have cyclic or linear structures. The terminal (unshared) O atoms in the anions can either carry a negative charge (O) or be capped with hydrogen atoms (OH). In order to have -conjugated molecular orbitals, the planar B(O)3 units may be stacked in the crystal lattice, which frequently produces advantageous optical features as strong harmonic production, birefringence, and UV transmission. Each linear chain of 2, 3, or 4 trigonal BO3 structural units in a polymeric borate anion shares oxygen atoms with an adjacent unit (s), has chains of trigonal BO3 structural units, similar to LiBO2. Cycles are present in other anions; for instance, the cyclic [B3O6]2 ion is present in NaBO2 and KBO2.
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carbon and iodine molecular compound
Answer:
Carbon dioxide is a molecule of one carbon and two oxygen atoms. Both elements are nonmetals with a moderate difference in electronegativity. However, the difference in electronegativity is not enough for the atoms to become ions and form an ionic compound. Therefore, carbon dioxide is a molecular compound.
Sodium iodide consists of the metal sodium and the nonmetal iodine. Both elements don't have high electronegativity values, but the difference in their values is large enough for electrons to be transferred between them. Since sodium has a lower electronegativity value, it will be the element that loses electrons. After electrons are transferred, ionic bonds will form between the two elements, resulting in an ionic compound.
predict: turn on show description. drag both glucose molecules into the building region. observe the highlighted region. what do you think will happen to the atoms in this region when the glucose molecules bond?
The sugar monosaccharide is glucose. Maltose is created when two glucose sugar molecules join forces. Two molecules of glucose include atoms that will exhibit nucleophilic and elimination reactions.
A second glucose molecule's fourth carbon will be attacked by the OH group of an anomeric carbon. A condensation reaction between two molecules of glucose results in the production of maltose sugar. Disaccharide maltose is produced. Monosaccharides are the most basic type of sugars and can be found in many everyday foods including honey, cane sugar, and fruits. Take a closer look at monosaccharides. We have already learned what a carbohydrate is and what it is not. The simplest type or subclass of carbohydrates is called a monosaccharide.
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Student Exploration: pH Analysis Vocabulary: acid; acidic, alkaline, base. indicator; neulral; pH Prior Knowledge Questions (Do these BEFORE using the Gizmo. Acids are subslances Ihal produce hydrogen ions (H ) when dissolved water: Lemon juice an examiple ol an acid: What does lemon juice taste like? What does feel like Iemon juice gets in your eye? Bases are substances that produce hydroxide ions (OH;) when dissolved water: Hand soap example of base What does soap feel like? What does soap taste like? What does feel Iike soap gels in your eye? Gizmo Warm-up The strength of an acid or base measured on the pH scale. The term "pH" is short for "potential of hydrogen measure of how many excess H' ions there are in solution: The pH scale runs from 0 t0 14, with representing the highest concentration of hydrogen ions Acidic substances have pH below while alkaline substances bases) have pH above Pure water has pH of - and Is considered neutral: The pH Analysis Gizmo allows you t0 find Ihe pH ol a variety of liquids. In Ihe Gizmo, check Ihat the Substance in the tube is Ammonia, and click Test Wait until the aimation finished_ Indicators change color in acids bases, What the color of the pH paper? Compare the paper to the PH color chart What the pH of ammonia? Is ammonia acidic or alkaline?
pH is a measure of the hydrogen ion concentration of the water as ranked on a scale of 1 to 14. The lower the pH of water, the more acidic it is. The higher the pH of water, the more basic, or alkaline, it is. Lemon juice has an acidic and sour flavor. Lemon juice is acidic, applying anything acidic to your eyes will cause them to sting and hurt.
People describe a soapy taste as bitter, slightly metallic, and burning. A great variety of soaps contain a pH range of 9-10 as they are mostly alkaline. Your eyes have a low tolerance for alkaline substances. Thus, when soap gets into them, the pH difference results in a burning sensation. A pH paper is a piece of paper used to find out if a solution is basic, acidic, or neutral. A pH paper changes color in different solutions due to the chemical flavin.
Ammonia is a weak base because its nitrogen atom has an electron pair that readily accepts a proton. Also, when dissolved in water, ammonia acquires hydrogen ions from water to produce hydroxide and ammonium ions. It is the production of these hydroxide ions that imparts ammonia its characteristic basicity.
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well, the astronaut finally wakes up because he hears two distinct alarms. one for high co2 and another for low pressure, but the suit has way too much oxygen. as he stumbles to the hab, he is facing both high co2 and high o2, but a lowered atmospheric pressure. if the atmospheric pressure inside the suit is now 0.5 atm (equivalent to an altitude on earth of 5500 m above sea level), then what low pressure symptoms could he be experiencing? this is separate from just the co2 and o2 levels.
The low atmospheric pressure symptoms could he be experiencing the headache, nausea, dizziness, loss of coordination.
The force exerted the surface by the air lies above the surface due to gravity is called as the atmospheric pressure. The air around you has some of the weight and the pressure against it is called as the atmospheric pressure. as he stumbles to the hab, he is facing both high CO₂ and high O₂, but a lowered atmospheric pressure. if the atmospheric pressure inside the suit is now 0.5 atm (equivalent to an altitude on earth of 5500 m above sea level), then low pressure symptoms could he be experiencing are :
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give the total number of electron domains, the number of bonding and nonbonding domains, and the molecular geometry for clo2-. group of answer choices
Clo2- : Total number of electron domains : Four, number of bonding: two and nonbonding domains : two, and the molecular geometry : bent.
What do you know about Clo2-?Chlorine dioxide is a chemical compound having the formula ClO₂. Chlorine dioxide is used as a bleach. As a disinfectant, it is effective at low concentrations also because of its unique qualities.
Chlorine dioxide is a bleach-like cleaning agent and if ingested may cause severe and adverse health effects including death.
Chlorine has got 7 valence electrons and oxygen 6 valence electrons. As there are two oxygen molecules in chlorine dioxide so the total is 19. Chlorine dioxide exists as ClO2- during the formation of a bond, hence we have one more valence electron available.
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What mass of calcium hydroxide is formed when 10. 0 g of calcium oxide reacts with 10. 0 g of water?.
The mass of calcium hydroxide is formed when 10.0g of calcium oxide reacts with 10.0 g of water is 13.024g.
The equation can be written as, CaO + H2O → Ca(OH)2
We have to find the moles of each reactant. We can calculate this by the expression using molar mass and mass of the reactant. the molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance which is the number of moles in that sample. Moles can be expressed as,
moles = mass / molar mass
moles of CaO= 10 g/56 g/mole
= 0.179 moles
moles of H2O = 10 g/18 g/mole
= 0.556 moles
when 10.0g of calcium oxide reacts with 10.0g of water we have to calculate mass of calcium hydroxide. we can calculate this by using the expression for molar mass M is the mass of a chemical compound divided by its amount of substance measured in moles. it is expressed as,
mass= moles x molar mass
= 0.176 moles x 74 g/mole
= 13.024 grams
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Which of these elements has the same number of valence electrons as neon Ne?a. carbon (C). b. phosphorus (P). c. nitrogen (N). d. oxygen (O)
Answer:
C. Nitrogen (N) has the same number of valence electrons as neon Ne. Both elements have a total of 8 valence electrons in their outermost energy level.
Explanation:
The element neon has the atomic number 10, which means it has 10 electrons in its outermost energy level. The element that has the same number of valence electrons as neon is therefore also the element that has the atomic number 10, which is neon itself. The other elements listed (carbon, phosphorus, nitrogen, and oxygen) have atomic numbers 6, 15, 7, and 8 respectively, so they do not have the same number of valence electrons as neon.
nitrogen oxide and nitrogen monoxide are both acceptable names for the compound with the chemical formula no. what is the difference in these names, and why do you think the prefix is optional?
Typically, a molecular molecule consists of two or more nonmetal components. The name of the second element is listed after the stem of the name of the first element, followed by the suffix -ide.
What distinguishes nitric oxide from nitrogen monoxide?Nitric oxide (NO), commonly known as nitrogen monoxide, is a colorless, poisonous gas created when nitrogen is oxidized. Nitric oxide has a number of uses in medicine and plays a significant role in chemical signaling in both humans and other animals. There aren't many industrial uses for it.
What makes N2O known as laughing gas?Nitrous oxide (N2O) is known as "laughing gas" because it makes people feel good after inhaling it. It tastes and smells slightly sweet. J. Priestley created N2O for the first time.
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Draw the Lewis structure for the SeO3-2 ion, then using VSEPR theory, what is its geometry and electronic structure?
The Lewis structure for SeO3-2 is shown below:
O
/ \
Se O
\ /
O
Using VSEPR theory, we can predict the geometry of the SeO3-2 ion to be trigonal planar.
To draw the Lewis structure for the SeO3-2 ion, we first need to determine the total number of valence electrons in the ion. The Se atom has 6 valence electrons and each O atom has 6 valence electrons, for a total of 24 valence electrons.
Next, we need to connect the atoms using single bonds. The Se atom forms three bonds with the O atoms, so we can place the O atoms at the corners of a triangle, with the Se atom at the center. This arrangement satisfies the octet rule for each atom, because each O atom has a full valence shell of eight electrons and the Se atom has an expanded valence shell of eight electrons as well.
Using VSEPR theory, we can predict the geometry of the SeO3-2 ion to be trigonal planar. In this geometry, the three O atoms are arranged in a plane around the central Se atom. The electronic structure of the ion can be described as follows: the central Se atom has a total of six valence electrons, and each of the three O atoms has a total of seven valence electrons. This results in a total of 25 valence electrons in the ion, giving it a -1 charge.
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Why do you think that renewable sources of energy tend to be "cleaner" sources than fossil fuels
Answer: renewable sources are better for the planet.
Explanation:
renewable sources are better for the planet, because we can use them repeatedly and can be replenished. However, non-renewable is the opposite of renewable sources (fossil fuel)
Honey ask a scientific question: “How does the water temperature affect the amount of jaggery that dissolves?” She lists the important variables in her investigation. - temperature of water - the amount of jaggery that dissolves
- volume of water
- size of jaggery
- texture of jaggery
1). Choose the variable in the list above that she should change.
2). Choose the variable in the list above that she should measure.
Answer:
She should change the temperature of the water.She should measure the amount of jaggery that dissolves.Explanation:
It's important to note that all of the variables listed could potentially affect the amount of jaggery that dissolves in water. However, in order to investigate the effect of water temperature on the amount of jaggery that dissolves, she should hold all other variables constant (such as the volume of water, size of jaggery, and texture of jaggery) and only vary the temperature of the water.
- By doing this, she can isolate the effect of water temperature on the amount of jaggery that dissolves and draw conclusions about the relationship between these two variables.
Let me know if you have any further questions.
Calcium carbonate has the formula CaCO3. What is the charge on the polyatomic carbonate ion? Select one
The polyatomic carbonate ion is charged with a value of -2. Calcium carbonate has the chemical formula CaCO3. One carbon atom and three oxygen atoms make up carbonate,
A polyatomic carbonate ion contains 2 more electrons than protons due to its negative charge. Its propensity to combine with alkali and alkali earth metals to generate salt compounds distinguishes carbonate, a malleable polyatomic ion. Its propensity to combine with alkali and alkali earth metals to generate salt compounds distinguishes carbonate, a malleable polyatomic ion. Several different types of sedimentary rocks mostly consist of carbonate compounds, the most well-known of which being limestone, which is primarily made of calcium carbonate (CaCO 3).
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Why is ethanol miscible in water?
Ethanol can dissolve in water because it is polar and can form hydrogen bond interactions with water.
Ethanol is often referred to as ethyl alcohol which has the chemical formula C2H5OH or CH3CH2OH which has a boiling point of 78.4°C. Ethanol is a chemical substance that is in the form of a clear liquid, has no color, is volatile and is very sensitive, so it is flammable.
Ethanol is generally used as a solvent in other chemicals such as drugs and other chemical compounds. This chemical dissolves easily in water and other organic solvents because it is polar and can form hydrogen bond interactions with water. The polarity of ethanol is due to the –OH group which is polar.
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with what compound will nh3 experience only ion-dipole intermolecular forces? with what compound will nh3 experience only ion-dipole intermolecular forces? ch3i sih4 hof ch3oh kbr
The intermolecular force of attraction here between voltage controlled (cation or unpaired electron) and a compound is recognised as an ion-dipole interaction.
It is repeatedly detected in solutions in which ionic substances disintegrate in solvents. The intermolecular force of attraction here between voltage controlled (cation or unpaired electron) and a compound is recognised as an ion-dipole interaction. Between polar molecules as well as a sodium ion, ion-dipole forces are created. The water molecule's oxygen atom has a small negative charge and is drawn to the positive sodium ion. These ion-dipole forces between the molecules are much relatively weak than covalent or ionic bonds. An anion could indeed attract the good outcome of a polar molecule while a cation could indeed attract the partial negative charge end of the a neutral polar molecule. Ion-dipole attractions become stronger as the ion's charge or even the magnitude of the polar molecule's dipole increases.
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how many covalent bonds are predicted for each atom? two covalent bondsthree covalent bondsfour covalent bonds
Three covalent bonds are predicted for each atom. When two atoms exchange one or more pairs of electrons, a covalent connection is created.
An electron exchange that results in the creation of electron pairs between atoms is known as a covalent bond. Bonding pairs or sharing pairs are the names given to these electron pairs. Covalent bonding is the process by which the attractive and repulsive interactions between atoms reach a stable equilibrium. Each atom in multiple molecules can reach the equivalent of a full valence shell thanks to the sharing of electrons, creating a stable electronic state. Covalent bonds are substantially more frequent than ionic bonds in organic chemistry. Covalent bonding encompasses a wide range of additional interactions, including bent bonds, three-center two-electron bonds, agostic interactions, metal-to-metal links, and three-center four-electron bonds, among many others. The concept of covalent bonding was first introduced in 1939. According to valence bond theory, a "covalent bond" essentially denotes that the atoms have a "valence" in common. The prefix co- denotes a grouping, a connection, a limited partnership, etc.
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the substance triethanolamine is a weak nitrogenous base like ammonia. write a net ionic equation to show that triethanolamine, c6h15o3n, behaves as a bronsted-lowry base in water.
Net Ionic equation is
C6H15O3N (aq) + H2O (l) ---------------> C6H15O3NH+ (aq) + OH- (aq)
What is Ionic equation?
A large number of the single-replacement and double-replacement reactions involved ionic compounds, such as those involving metals and nonmetals or those containing identifiable polyatomic ions. Now let's examine more closely at ionic compound-containing processes.
Ionic compounds differ from molecular compounds in a number of significant ways, one of which has to do with how easily they dissolve in a liquid like water. The molecules drift apart from one another as molecular substances, like sugar, disintegrate in water. Ions in ionic compounds physically separate from one another when they dissolve. To illustrate this process, we can use a chemical equation. For instance, using NaCl
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CHEMISTRY 50 POINTS!
Which of the following explains the VSEPR geometry of a water molecule?
A) It is tetrahedral because there are four bonded pairs around oxygen.
B) It is bent because there are four bonded pairs around oxygen.
C) It is tetrahedral because there are two bonded pairs and two lone pairs around oxygen.
D) It is bent because there are two bonded pairs and two lone pairs around oxygen.
Answer: D
Explanation:
Water is comprised of 2 Hydrogen atoms and 1 Oxygen atom. This gives us a total of 8 valence electrons to form bonds with.
Because Hydrogen is in first row of elements it can only hold a total of two electrons. This means each Hydrogen holds 2 electrons.
But that means there are four more electrons. VSEPR theory is basically how electron repulsion causes atoms to arrange in different ways.
There will be four electrons left on the oxygen because they can not go anywhere else. This will cause the hydrogen molecules to move away from the lone electrons and cause a bent geometry rather than a straight-line geometry.
Choose the combination of factors that would lead to the greatest oxygen unloading from hemoglobin. Low pH, high temperature, high Pcoz, high 2,3-BPG Low pH, high temperature, low Pcos, high 2,3-BPG High pH, low temperature, low Pcoz, low 2,3-BPG High pH, high temperature, high Pcoz, low 2,3-BPG Submit Request Answer rovide Feedback
Temperature, pH, PCO2, and 2,3 diphosphoglycerate are some of the variables that affect how oxygen binds to hemoglobin.
The oxygen dissociation curve moves to the right and Hb's affinity for O2 decreases as its temperature rises. The oxygen Hb dissociation curve changes to the right as the partial pressure of carbon dioxide rises, increasing the P50 value. As a result of greater Hb binding to carbon dioxide, Hb has a lower affinity for oxygen.
High pO2: The more oxygen there is in the air, the more effectively haemoglobin binds to oxygen.Low pCO2: Oxyhemoglobin production is reduced by a lot of carbon dioxide. Compared to oxygen, carbon dioxide has a stronger affinity for hemoglobin.Less H+: Hemoglobin is more likely to dissociate when the pH is lower or the hydrogen ion concentration is higher.Lower temperature: Hemoglobin and oxygen are more likely to bind at a normal temperature. The oxygen separation from haemoglobin is caused by the high temperature.To learn more about oxygen click here https://brainly.com/question/13370320
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Question 5 of 42 The driving factor for solution formation is A) entropy B) enthalpy C) temperature D) molar mass of the molecules
The driving factor for solution formation is a) entropy Remember that entropy is a measure of the amount of disorder in a system
Entropy, broadly speaking, serves as a metric for energy quality, with lower entropy indicating higher quality. Entropy is lower for energy that has been carefully organized (the efficient library). The random-pile library is a chaotic energy storage system with high entropy. The overall entropy of a system never decreases; according to the second law of thermodynamics, it always either rises or stays the same. Entropy is the opposite of negentropy. This suggests that order is gaining ground. Order implies organization, structure, and function and is the antithesis of randomness or chaos. The solar system is an example of a star system with negative entropy. Negentropy is entropy's opposite.
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one of the stereoisomers of the following oblongolide structure is a natural product isolated from a fungus and has been found to contain antiviral and cytotoxic activities (j. nat. prod. 2010, 55). how many stereoisomers exist for this structure?
One of the stereoisomers of the following oblongolide structure. There are 4 stereoisomers structures exist for this structure.
A stereoisomer is a molecule that has the same molecular formula and the same connectivity of atoms, but the atoms are arranged in a different spatial configuration. There are two main types of stereoisomers: geometric isomers and optical isomers. Geometric isomers are stereoisomers that differ in the spatial arrangement of atoms within a molecule. They can be cis-trans isomers, which differ in the orientation of substituents on a double bond, or E-Z isomers, which differ in the orientation of substituents around a triple bond. Optical isomers, also known as enantiomers, are stereoisomers that are non-superimposable mirror images of each other. They differ in the orientation of chiral centers (atoms with four different substituents) within a molecule. In the oblongolide structure, there are two chiral centers, one at the carbon atom bonded to the oxygen atom and one at the carbon atom bonded to the nitrogen atom. This means that there are two possible configurations for each of these chiral centers, resulting in a total of 2 x 2 = 4 stereoisomers. Therefore, there are four stereoisomers of the oblongolide structure: two geometric isomers and two optical isomers.
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transcribed image text: (27pts) part ii. galvanization mass of iron nail before: 0.620 g mass of galvanized iron nail: 0.610 9 (1 pts) mass of zinc produced (9) mass of zinc electrode before: 5.720 9 mass of zinc electrode after: 5.710 g (1 pts) mass of zinc consumed (9) length of time ran: 5.00 min 1. calculate the number of moles of electrons that passed through the cell during the electrolysis based off the amount of zinc produced on the iron nail. (4pts) moles of electrons (mol of e) (1pts) for full credit, upload all of your work for question 1 here. browse your files to upload or drag and drop max attachments: 5 max size: 20.00mb each 2. calculate the current (amps) that passed through the cell during the electrolysis. (8pts) current (amps)
The mass of Zn produced on the iron nail is similar/ equal to the mass of Zn lost from the Zn electrode. Hence no loss of mass.
Elaborate the above statement with calculation.Mass of Zn produced in iron nail= 0.630g -0. 610g = 0.01g
Mass of Zn consumed = 5.720 to 5.710 g = 0.01g
Given length of time run= 5 min = 5× 60 = 300 second
Moles of Zn passed = 0.001g = 0.00015 mol
1 mol contain = 6.022×10^23 atoms
Total electron contain in 0.00015 mol of Zn atoms
= 0.00015 × 30 ×6.022× 10^23
= 0.00461 × 6.022 × 10^23
Therefore, number of moles of electron transferees = 0.00461×6.022×10^23 / 6.022×10 ^23
= 0.00461 mol
From the Faraday first law of electrolysis
I = mF / Et
= 0.01 × 96500/32.7×200
= 0.098 mps
The mass of Zn produced on the iron nail is similar/ equal to the mass of Zn lost from the Zn electrode. Hence no loss of mass.
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Draw the Lewis structure of (AsF4) Use this stnicture; conjunction with VSEPR theory, predict: a)The electron domain geometry of the molecule: b)The molecular geometry (shape ofthe molecule). c)The bond angles around the centra atom. d)The polarity of the molecule. e) The type of hybridization f the central Hom.
(a) Electron domain geometry: TBP
(b) molecular geometry of the molecule: see-saw
(c) The bond angles around the central atom:
∠F-As-F (equatorial) : 120° and
∠F-As-F (axial): 90° but actually less than these values.
(d) This is a polar molecule.
(e) sp³d hybridization of the central metal atom.
What is Lewis structure?A molecule's valence shell electrons are shown in a very simple manner via a Lewis structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms.
It demonstrates the bonds that exist between a molecule's atoms and its lone pairs of electrons. When used in conjunction with hybrid orbitals, Lewis structures can also be helpful in predicting molecular geometry.
The Lewis structure of [AsF₄]⁻ is drawn below:
(a) The electron domain geometry of the molecule is: TBP (trigonal bipyramidal)
(b) The molecular geometry of the molecule: see-saw.
(c) The bond angles around the central atom:
Expected bond angle:
∠F-As-F (equatorial) : 120° and
∠F-As-F (axial): 90°
but it is observed that, it is less than the expected value due to l.p-b.p repulsion.
(d) This is a polar molecule.
(e) The type of hybridization of the central atom: sp³d.
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Which methods will help you properly identify ph with indicator paper? check all that apply.
The methods that will help to correctly identify the PH with indicator paper are:
Set a piece of pH paper in front of each solution before testing to keep organized.Use a transfer pipet to remove a few drops from the solution to drop onto the paper.Wait a minute or so before reading color.Correct answer: letter A, C and D.
This is because these methods provide an organized approach to testing the pH of a solution. In addition, using a transfer pipette to draw a few drops of the solution and dropping them onto the paper will ensure that the correct amount of solution is tested. Waiting a minute or so before reading the color will also allow the indicator paper to change color and provide an accurate reading.
What is the PH of a solution?Is a measure of its acidity. It is measured on a scale from 0 to 14, with 0 being the most acidic, 7 being neutral and 14 being the most basic. The pH is determined using an acid-base indicator, such as pH paper.
Liquids in a solution can be made more acidic or more basic by adding acids or bases. Increasing the acidity decreases the pH, while increasing the basicity increases the pH.
Which methods will help you properly identify pH with indicator paper? Check all that apply:
A) Set a piece of pH paper in front of each solution before testing to keep organized.
B) Dip the pH paper into each test tube and lay it on the table to let it change color.
C) Use a transfer pipet to remove a few drops from the solution to drop onto the paper.
D) Wait a minute or so before reading color. Use the same piece of indicator paper for each solution to conserve paper.
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