What is the quickest method to find the number of resonating structures of O3, and SO4-2 like? (within 30 seconds) The best answer will make the brainiest
Answers
To quickly find the number of resonating structures of O3 and SO4-2, you can use the formula:
Number of resonating structures = 2^(number of equivalent resonance structures)
For O3, each oxygen atom is equivalent and there are two possible equivalent resonance structures:
O = O - O and O - O = O
Therefore, the number of resonating structures for O3 is:
2^(2) = 4
For SO4-2, there are two equivalent resonance structures for the sulfur-oxygen bonds and four equivalent resonance structures for the sulfate ion as a whole:
S = O and S - O(-)
O(-) - S - O and O = S = O(-)
Therefore, the number of resonating structures for SO4-2 is:
2^(2) x 2^(4) = 16
So the number of resonating structures for O3 is 4, and the number of resonating structures for SO4-2 is 16.
Related Questions
Match the types of electromagnetic radiation and their everyday uses.
1.
Gamma rays
2.
Visible light
3.
Radio waves
4.
Infrared rays
5.
X-Rays
6.
Ultraviolet rays
7.
Microwaves
a.
Medical imaging
b.
Broadcasting radio stations
c.
Cell phones and radar
d.
Remote controls and night vision
e.
Light bulbs
f.
Studying stars
g.
Tanning beds
Answers
Answer:
1. Gamma rays - f. Studying stars
2. Visible light - e. Light bulbs
3. Radio waves - b. Broadcasting radio stations
4. Infrared rays - d. Remote controls and night vision
5. X-Rays - a. Medical imaging
6. Ultraviolet rays - g. Tanning beds
7. Microwaves - c. Cell phones and radar
Question 1
13 pts
When cells divide they ____
Answers
Answer:
multiply (make new cells)
what is the molar concentration of lithium ions in a 0.550 mli3po4 solution?
Answers
The molar concentration of lithium ions in a 0.550 M \(Li_3PO_4\) solution is approximately 1.65 M. To determine the molar concentration of lithium ions in the \(Li_3PO_4\) solution, we need to consider the stoichiometry of the compound.
\(Li_3PO_4\) consists of three lithium ions (Li+) and one phosphate ion \((PO4^{3-})\).
Given that the solution is 0.550 M \(Li_3PO_4\), it means that there are 0.550 moles of \(Li_3PO_4\) dissolved in 1 liter of solution. Since there are three lithium ions in each formula unit of \(Li_3PO_4\), the molar concentration of lithium ions will be three times the molar concentration of \(Li_3PO_4\).
Thus, the molar concentration of Li+ ions can be calculated as follows:
Molar concentration of Li+ ions = (3 × molar concentration of Li3PO4)
= (3 × 0.550 M)
= 1.65 M
Therefore, the molar concentration of lithium ions in the 0.550 M \(Li_3PO_4\) solution is approximately 1.65 M.
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What do you mean by the region or space that an electron revolves
the nucleus in an atom?
Answers
ANSWER
shell or the energy level
Identify the change that will not increase the volume of a gas. Assume that all other variables are constant.
O increase the number of particles
O decrease the pressure
o increase the temperature
decrease the temperature
Answers
Answer:
increase the number
Explanation:
What will happen to a piece of stone if you place it in water?
A. The stone will sink in water.
B. The stone will float in water.
C. The stone will decay in water.
D. The stone will soften in water
Answers
ASAP MULTIPLE CHOICE
Who discovered the electron?
J.J. Thomson
John Dalton
Antoine Lavoisier
Robert Millikan
Answers
HELP PLSSS!!!
How many particles are present in 166.3g of Ba(BrO3)2 ? (Round your answer to the hundredths place)
Show work
Answers
\(=166.3g\ Ba(BrO_{3})_{2}\ x\ \frac{1\ mol\ Ba(BrO_{3})_{2}}{393.13g\ Ba(BrO_{3})_{2}}\ x\ \frac{6.022\ x\ 10^{23}\ particles}{1\ mol\ Ba(BrO_{3})_{2}}\)
\(=2.547398062\ x\ 10^{23}\ particles\)
\(=2.55\ x\ 10^{23}\ particles\)
You are given the mass of barium bromate. You have to find the moles of this substance using the molar mass and then multiply it by avogadro's number to find how many particles are present.
Distillation is a process used to separate a mixture of liquids based on different
a. boiling points
b.
densities
freezing points
d. solubilities
Answers
Answer:
freezing points hope it helps u
Distillation is a process used to separate a mixture of liquids based on different freezing points. Therefore, option C is correct.
What is distillation ?Distillation is the process of turning a liquid into a vapor, which is then condensed back into a liquid state. The simplest illustration of it is when steam from a kettle condenses into drops of distilled water that are left on a cold surface.
In general, distillation is the process of vaporizing a liquid to its boiling point, then condensing it back into a liquid to separate it from impurities or other solutes.
Among the many industrial uses of distillation are the production of alcoholic drinks, water purification, and oil refining. Distillation is a physical procedure that removes desired pure compounds from an initial source using heat and other techniques.
Thus, option C is correct.
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after separating your partition samples in the burettes, you add 3 drops of ferric chloride to the pre/post-partition salicylic acid solutions. you notice that the pre-partition solutions turned a much more vibrant purple color than their respective post-partition solutions. this suggests that:
Answers
The more vibrant purple color of the pre-partition solution suggests that the concentration of salicylic acid is higher in the pre-partition solution than in the post-partition solution because of the complex formed.
Ferric chloride (orange in color) interacts with phenolic hydroxy groups by creating a complex that has a strong purple color. The intensity of the color is proportional to the concentration of the phenol. Because salicylic acid contains a phenolic hydroxy group, its solution will also turn purple upon the addition of ferric chloride. If the pre-partition sample has a more vibrant color, then this means that the concentration of salicylic acid in it is significantly higher, which can then inform us on the effectiveness of the separation and partition process.
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the combustion of 40.5 mg of a compound extracted from the bark of the sassafras tree and known to contain c, h, and o produces 110.0 mg co2 and 22.5 mg h2o. the molar mass of the compound is 162 g/mol. what is the molecular formula?
Answers
The molecular formula is C10H10O2.
What is molecular formula?
The number of atoms of each constituent element that constitute a given molecule are described by its molecular formula.
Mass of the compound extracted from the bark of the sassafras tree =40.5mg
Mass of CO2 obtained= 110.0mg
Mass of water obtained=22.5g
Calculation of percentage of Carbon, Hydrogen and Oxygen
12 g of Carbon is present in 44 g of CO2. Similarly 2 g of H is present in 18 g of water. Using this we calculate
Percentage of C = 12/44.mass of CO2/ total mass of compound *100
= 12/44.110.0/ 40.5 *100
=74.07
Percentage of H = 2/18.mass of H2O/ mass of compound *100
= 2/18.22.5/ 40.5 *100
=6.17
Percentage of O =100-6.17-74.07
=19.76 ( As compound contains only C H and O).
Hence, Empirical Formula is C5H5O.
Molecular mass of compound= 162g/mol
Empirical mass = 60+5+16=81g/mol
So, multiplying factor (n) = Molar mass/empirical mass= 162/81=2
So, Molecular formula= (C5H5O)2= C10H10O2.
Therefore, the molecular formula is C10H10O2.
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Question 11
Which formula represents a hydrocarbon?
C₂H6
C₂H5OH
C₂H5Cl
C₂H6O
Answers
Answer:
C₂H6
Explanation:
Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A
A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:
A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.
B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.
C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.
D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.
Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.
In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A
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What does the “188” represent in Tantalum-188
A. mass number
B. atomic number
C. mass defect
Answers
Answer:
mass number
Explanation:
When there is an element name followed by a dash and then a number, the number simply represents the mass number.
for example:
Oxygen- 18
18 represents the mass number of this particular isotope
What changes have occurred in the last 20-50 years in the temperate deciduous forest in the united kingdom
Answers
1. Increase in temperature: The average temperature in the UK has increased over the last few decades, which has resulted in changes in the timing of seasonal events in the forest. For example, the leafing-out of trees has advanced by several days.
2. Changes in vegetation: There has been a shift in the composition of the forest towards more shade-tolerant species, which has led to changes in the understory vegetation.
3. Changes in wildlife: Changes in the forest structure and composition have led to changes in the wildlife that inhabit the forest. For example, some bird species have increased in abundance, while others have declined.
4. Increase in invasive species: The UK has seen an increase in invasive plant species, such as Japanese knotweed, which can outcompete native species and alter the composition of the forest.
5. Changes in land use: Forests in the UK are increasingly being managed for multiple uses, such as recreation and timber production. This has led to changes in forest structure and composition.
describe what the sl-3 components of the m240b medium mahine gun are used for?
Answers
The SL-3 components of the M240B medium machine gun are used for barrel replacement and maintenance.
The SL-3 components of the M240B consist of a spare barrel and a barrel bag. The spare barrel is an essential component for sustained firing and allows for the replacement of a hot or worn-out barrel during extended periods of continuous use. When the barrel becomes overheated, it can negatively impact the weapon's accuracy and potentially cause malfunctions. The spare barrel is designed to be quickly swapped with the hot barrel to ensure optimal performance and prevent damage to the weapon.
The barrel bag is used to safely store the hot or dirty barrel after it has been replaced. It serves as a protective cover to prevent accidental contact and potential burns while the barrel is still hot. Additionally, the bag helps contain any carbon or residue that may be present on the barrel, preventing it from spreading and contaminating other equipment or personnel. The barrel bag is an essential part of the maintenance process, ensuring safe handling and transportation of the replaced barrel until it can be properly cleaned and inspected.
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describe Bohr’s model of the atom consisted of a central
surrounded by electrons moving in specific
Answers
Answer:
The answer to this question is given below in the explanation section.
Explanation:
The Bohr model depicts an atom as a small, positively charged nucleus surrounded by electrons.These electrons travel in circular orbit around the nucleus similar in structure to the solar system,except electrostatic forces rather than gravity provide attraction.Electron orbit around the nucleus resembles that of planets around the sun in the solar system.
The Bohr model was an improvement on the earlier cubic model(1902),the plum pudding model(1904) the saturnine model (1904) the rutherford model (1911) since the Bohr model is a quantum physics based modification of the Rutherford may source combine the two:the Rutherford-Bohr model
Although revolutionary at the time,the Bohr model is a relatively primitive model of the hydrogen atom compared to the valence shell atom.As an initial hypothesis it was derived as a first order approximation to describe the hydrogen atom.Due to its simplicity and correct results for selected systems.
In 913 Bohr suggested that electrons could only have certain classical motions:
Electrons in atoms orbit the nucleus.The electrons can only orbit stably,without radiating in certain orbits at a certain discrete set of distances from the nucleus.These orbit are associated with definite energies and are also called energy shells or energy levels.Electrons can only gives or lose energy by jumping from one allowed orbit to another,absorbing or emitting electromagnetic radiation with a frequency (v) determined by the energy difference of the levels according to the plank relation.By how many carbon atoms does each member of a homologous series differ from the previous member? (1) 1, (2) 2, (3) 3, (4) 4.
Answers
The correct answer is that each member of a homologous series typically differs from the previous member by one carbon atom.
n a homologous series, each member differs from the previous member by the same functional group and a constant increment of carbon atoms. This constant increment is known as the "carbon atom difference" or "carbon atom increment."
In the given options, the correct answer is (1) 1. Each member of a homologous series typically differs from the previous member by adding or subtracting one carbon atom.
For example, consider the homologous series of alkanes:
Methane (CH4)
Ethane (C2H6)
Propane (C3H8)
Butane (C4H10)
In this series, each member differs from the previous member by adding one carbon atom.
Methane has one carbon atom, ethane has two carbon atoms (one more than methane), propane has three carbon atoms (one more than ethane), and so on.
Therefore, the correct answer is that each member of a homologous series typically differs from the previous member by one carbon atom.
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Examine the given Beer's law standard curve for an unknown dye measured in a 1. 0 cm cuvette. Y = 15200x-0. 18.
What is the molar absorptivity (in M–1cm–1) of the unknown dye at 542 nm?
Answers
The Beer's Law equation is A = εlc, where A is the absorbance, ε is the molar absorptivity, l is the path length (1.0 cm in this case), and c is the concentration.
Rearranging the equation, we can solve for ε: ε = A / (lc) = A / (l * c).
Since the equation given is Y = 15200x - 0.18, where x is the concentration,
we can use it to find the absorbance (A) at a given concentration.
For a concentration of x = 0.005 M, the absorbance (A) can be found by substituting the values into the equation: Y = 15200x - 0.18,
Y = 15200 * 0.005 - 0.18
Y= 0.76.
Therefore, the molar absorptivity (ε) at a wavelength of 542 nm for a concentration of 0.005 M can be calculated as:
ε = A / (lc)
Substitute the value in above equation we get,
= 0.76 / (1.0 * 0.005)
= 152 M^-1cm^-1.
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If an atom is in column VIII (18), what will happen to fulfill the octet rule?
Answers
Answer:
If an atom is in column VIII (18), it is already considered to have a full outer shell, so it does not need to fulfill the octet rule.
Explanation:
Elements in column VIII (18), also known as the noble gases, have a complete valence shell of eight electrons (with the exception of helium, which has a full valence shell with only two electrons). This makes them particularly stable and unreactive. Because their outer shell is already full, they do not need to gain, lose, or share electrons to achieve a stable electron configuration. This is why noble gases are often referred to as "inert" or "nonreactive" elements.
Therefore, if an atom is in column VIII (18), it does not need to do anything to fulfill the octet rule, as it already has a full outer shell of electrons.
Answer:
Atoms in column VIII (18) are inert gases, which means that the octet rule is not filled. This is because the valence shell of these atoms is full and cannot be filled, meaning that the atom does not gain or lose electrons. As a result, the atom does not form bonds with other atoms and remains stable on its own. Therefore, these atoms do not fulfill the octet rule because they do not take part in bonding with other atoms.
Explanation:
Complete la siguiente comparación de similitud:
Molécula ES A enlace covalente; como: __________________ ES A enlace iónico.
Iones
Metaloides
Red cristalina
Answers
Answer:
metaloides
Explanation:
twenty different amino acids are found in the proteins of cells. what distinguishes these molecules
Answers
Amino acids differ from each other with respect to their side chains, which are referred to as R groups. The R group for each of the amino acids will differ in the structure, electrical charge, as well as polarity.
Amino acids are the compounds or the building blocks that make up peptides as well as proteins. Each amino acid is structured from an amino group and a carboxyl group bound to the tetrahedral carbon. This carbon is denoted as the α-carbon.
Proteins are the chains of the amino acids which is assemble via amide bonds called as peptide linkages. The difference in the side-chain group or the R-group is what determines the unique properties of each of the amino acid.
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judy tests a common household substance and finds that it has a ph of 7. what type of substance is in the scenario?
Answers
On the pH scale, the pH range for an acid is 0–7 and the pH range for a base is 7–14. pH 7 refers to a neutral solution. pH-7 pure water is a substance considered neutral.
Is hydrogen an ion of H+?This substance, which consists of a water molecule with a proton (H+) added, is an ion because it has a charge. It is known as the hydronium ion and has the formula H3O+. When an acid dissolves in water, the hydronium ion is always produced. Always interacting with the nearby water molecule to generate H3O+, the acid's H+.
What are the uses of H3O+?For the detection of trace gases in the air, chemical ionization using proton-transfer reactions with hydronium ions (H3O+) is frequently used.
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Write a balanced equation from the following cell notation:
Mn(s)|Mn²⁺(aq)||Cd²⁺ (aq)|Cd(s)
Include the physical state of each reactant and product.
Answers
The given cell notation "Mn(s)|Mn²⁺(aq)||Cd²⁺(aq)|Cd(s)" represents an electrochemical cell with the following half-cell reactions: At the anode (left side): Mn(s) → Mn²⁺(aq) + 2e⁻, At the cathode (right side): Cd²⁺(aq) + 2e⁻ → Cd(s)
In the overall balanced equation, we can combine these two half-cell reactions:
Mn(s) + Cd²⁺(aq) → Mn²⁺(aq) + Cd(s)
The physical state of each reactant and product can be included as follows:
Solid manganese (Mn) is the anode (left side), represented as "Mn(s)".
Aqueous manganese(II) ion (Mn²⁺) is in solution, represented as "Mn²⁺(aq)".
Aqueous cadmium(II) ion (Cd²⁺) is in solution, represented as "Cd²⁺(aq)".
Solid cadmium (Cd) is the cathode (right side), represented as "Cd(s)".
The balanced equation for the given cell notation is:
Mn(s) + Cd²⁺(aq) → Mn²⁺(aq) + Cd(s)
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How are the atoms
or molecules
arranged in solid?
Answers
Answer:
Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. ... gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
Hope this helped :)
what effect does acid have on the gelatinization of a starch paste
Answers
Acid can inhibit the gelatinization of a starch paste.
Gelatinization is the process of breaking down the intermolecular bonds of starch molecules in the presence of water and heat, allowing the hydrogen bonding sites to engage more water.
However, when an acid is introduced to the starch paste, it can partially hydrolyze the starch molecules, breaking the glycosidic bonds and reducing the size of the starch granules.
This inhibits the gelatinization process by preventing the granules from swelling and absorbing water as effectively as they would in a neutral or alkaline environment.
Summary: Acid negatively affects the gelatinization of a starch paste by partially hydrolyzing the starch molecules, which in turn hinders the starch granules' ability to swell and absorb water.
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determine whether each salt will create an acidic, basic, or neutral solution when dissolved in water.a. NH4NO3b. AgNO3 c. Na2CO3 d. Ca(CIO4)2
Answers
a. NH4NO3: acidic b. AgNO3: neutral c. Na2CO3: basic d. Ca(CIO4)2: acidic
How can one determine if salt will create an acidic, basic, or neutral solution?The acidity or basicity of salt can be determined by identifying the acid and base used to form the salt and then analyzing the relative strength of the acid and base. If the acid is strong and the base is weak, the resulting salt will create an acidic solution when dissolved in water. If the acid and base are weak, the resulting salt will create a basic solution when dissolved in water.
What will the resulting salt's nature be if the acid and base are strong?If the acid and base are strong, the resulting salt will create a neutral solution when dissolved in water. For example, in the case of NH4NO3, NH4+ is the conjugate acid of the weak base NH3, and NO3- is the conjugate base of the strong acid HNO3. Since the conjugate acid NH4+ is soft and the conjugate base NO3- is neutral, the resulting salt NH4NO3 will create an acidic solution when dissolved in water.
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plz help fast lot of points.
Answers
Answer:
The one at the top: cuticle
The highest line on the right side: palisade layer
The third line on the left: chloroplast
The line near phloem: vein
The line at the bottom: stomata
Entirely on the attachment.
Explanation:
No need.
Which bond between atoms will be more ionic?Group of answer choicesC-NO-OCl-ClC-CMg-Cl
Answers
Ionic compounds contain ions and are held together by the attractive forces among the oppositely charged ions. It's common to see ionic compounds formed by metal and nonmetal because you can note that the electronegativity difference between the elements of these compounds is greater than or equal to 1.7.
In the group of answer choices, you can see various things about Mg - Cl because it's the only answer that contains a metal (Mg) and nonmetal (Cl), their difference electronegativity is 1.8 (The electronegativity of Cl is 3.0 and for Mg is 1.2, so 3.0 - 1.2 = 1.8, it's greater than 1.7. The electronegativities can be found in the periodic table). Mg has a positive charge (+2) and Cl has a negative charge (-1).
All these characteristics is telling us that the bond Mg - Cl is the more ionic in this case. The answer is Mg - Cl.
quartz weathers readily to aluminum-rich clay minerals.
Answers
Quartz weathers to aluminum-rich clay minerals due to chemical reactions with water and atmospheric gases.
Weathering refers to the breakdown and alteration of rocks and minerals at or near the Earth's surface. Quartz is one of the most common minerals found on the Earth's surface. However, quartz is not chemically stable when exposed to environmental conditions and can undergo physical and chemical weathering. During chemical weathering, quartz undergoes a reaction with water and atmospheric gases that lead to the formation of aluminum-rich clay minerals. The reaction is mainly a hydrolysis reaction where water reacts with the mineral to form a hydrated form of the mineral.
The reaction between quartz and water leads to the production of silica, which dissolves in water, and aluminum-rich clay minerals, which precipitate from the solution. The rate of weathering of quartz is dependent on factors such as temperature, rainfall, the type of mineral, and the acidity of the environment. In acidic environments, the rate of weathering is much higher. Therefore, the formation of aluminum-rich clay minerals from quartz is a vital process in soil formation.
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Which of the following is a decomposition reaction?
Answers
Answer: D
Explanation:
D - Decomposition of carbonates into oxide and carbon dioxide
A - Combustion reaction. Combustion of methane to form Carbon dioxide and water.
C - Reaction of reactive metal (Na) and water to form hydroxide.
B - No particular name of the reaction. Usually denoted as a synthesis redox reaction.
Answer:CaCO3  CaO + CO2
Explanation: just took it