3) Cement particles together: Water does not physically or chemically bind particles together.
Instead of binding particles together, it weakens the cohesion between them, making them more likely to move under the influence of gravity in processes such as landslides, mudflows, and creep.
When water enters the pore spaces between particles, it can increase the pore pressure and reduce the friction between particles, making them less stable.
This can cause soil particles to become saturated and start to move, resulting in the mass movement. Additionally, water adds weight to the mass of the material, making it more susceptible to mass movement.
Hence, the correct choice is to Cement particles together.
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all of the following are cofactors used in the reaction catalyzed by pyruvate dehydrogenase except .
Thiamine pyrophosphate is not the cofactor used in the reaction catalyzed by pyruvate dehydrogenase.
An essential regulatory enzyme known as pyruvate dehydrogenase (PDH) bridges the aerobic TCA cycle to anaerobic glycolysis by catalyzing the conversion of pyruvate into acetyl-CoA.
The citric acid cycle and subsequent oxidative phosphorylation are linked to the glycolysis, gluconeogenesis, and lipid and amino acid metabolism pathways by the pyruvate dehydrogenase complex (PDH).
Three catalytic enzymes, two regulatory enzymes, and a binding protein are all present in PDC. Additionally, TPP, lipoic acid, and flavin adenine dinucleotide are necessary cofactors (FAD).
Pyruvate dehydrogenase does not require thiamine pyrophosphate as a cofactor. It works with living systems. Coenzyme called thiamine pyrophosphate is involved in the metabolism of lipids, amino acids, and carbohydrates.
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mcpba draw one of the two diasteromers of the major product from this reaction use wedge and dash bonds to indicate sterochemistry where appropriate ignore inorganic byproducts
A molecule's three-dimensional structure, with simple lines representing plane links, wedge-shaped lines representing bonds facing the observer, and dashed lines representing bonds Stereochemistry facing the viewer's opposite.
Stereochemistry is the study of a molecule's three-dimensional structure. The only structural difference between cis and trans isomers, which are types of stereoisomers, is where the molecule's elements are located three dimensionally. The chemical and physical properties of these stereoisomers may differ. Stereochemistry is a branch of chemistry concerned with "the study of the various spatial configurations of atoms in molecules." The systematic presentation of a specific area of science and technology, known as
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What is the process of lactic acid fermentation?.
Lactic acid fermentation can be defined as a metabolic process by which glucose or other six-carbon sugars are converted into cellular energy and the metabolite lactate, which is the lactic acid in solution.
What is Lactic acid fermentation?Lactic acid fermentation can be described as a metabolic process by which glucose or disaccharides of six-carbon sugars such as sucrose or lactose are converted into cellular energy and the metabolite lactate.
This process is an anaerobic fermentation reaction that happens in some bacteria and animal cells, such as muscle cells. In many organisms, if oxygen is present in the cell will bypass fermentation and continue with cellular respiration.
However, facultative anaerobic organisms will undergo both fermentation and respiration in the presence of oxygen. Sometimes when oxygen is present and aerobic metabolism is occurring in the mitochondria, if pyruvate is growing up faster than it can be metabolized, the fermentation will occur anyway.
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look at each of the atoms in the solid state. What similarities do you see in the solids
If the proportions of the corresponding sides and angles of two shapes or solids match, then the forms or solids are said to be comparable. Keep in mind that expanding a form results in a comparable shape.
What is solid ?One of the four basic states of matter is solid. The least energetic molecules are those that are tightly packed together and make up solids. A solid's structural stiffness and resistance to surface forces are its defining characteristics.
Because the energy of atoms lowers when they occupy a reasonably organized, three-dimensional structure, a solid develops from a liquid or gas. Solids differ from liquids and gases in that they have particular properties.
Thus, If the ratio of the lengths of the respective radii, heights, base lengths, widths, or any other dimensions of two solids is the same, they are said to be comparable.
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consider the lewis structure for ammonia, nh3. what is the hybridization of the n atom, and how many unhybridized p orbitals remain?
Nitrogen's steric number will be equal to 4 because it makes 3 covalent bonds and has 1 lone pair. This means that one s and three p-orbitals will combine to generate a total of 4 hybridized orbitals.
What is steric number?Steric number is defined as both the total number of lone pairs attached and the total number of atoms that are directly bound to a central metal atom.
Steric Number = (number of lone electron pairs ) + (number of atoms bonded to the central atom)
Ammonia is sp3 hybridized. Four hybrid nitrogen orbitals are created when a 2s orbital and three 2p orbitals join.
Thus, nitrogen's steric number will be equal to 4 because it makes 3 covalent bonds and has 1 lone pair. This means that one s and three p-orbitals will combine to generate a total of 4 hybridized orbitals.
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In the reaction of zn with hcl, 140. 15 g of zncl2 was actually formed, although the theoretical yield was 143 g. What was the percent yield?.
The stated statement indicated that the yield was 98%.
With an example, what is reaction?When one or much more chemicals are transformed into one other compounds, a chemical reaction takes place. An illustration of this is when iron as well as oxygen combine to make rust. Vinegar as well as baking soda together result in the production of water, carbon dioxide, and sodium acetate. burning or exploding objects
Briefing:
Percent yield = 98%
Actual ZnCl2 yield was 140.15 g.
ZnCl2 theoretical yield = 143 g
Actual yield divided by theoretical yield is 100 percent yield.
Percent yield = (140.15 g/ 143 g)× 100
Percent yield = 0.98 × 100
Percent yield = 98%
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Check the box that has a false statement.
A. The particle at point "A" are locked into place and can only vibrate.
B. At point "B" on the graph, the substance is undergoing a change in state
C. At point 'D' on the graph, the substance is completely transformed to a gas.
D. At point "E" on the graph, the particles of the substance have more energy than at
points "A" or "C".
The particle at point "A" are locked into place and can only vibrate. and At point 'D' on the graph, the substance is completely transformed to a gas. is correct option.
What is vibration?
A mechanical phenomenon called vibration causes oscillations to take place around an equilibrium point. The word is derived from vibrationem in Latin ("shaking, brandishing"). The oscillations can be random—like a tyre rolling over gravel—or periodic, like the swinging of a pendulum. Vibrations like those made by a tuning fork, a woodwind instrument's or harmonica's reed, a mobile phone, or a loudspeaker's cone can be pleasing to the ear. However, vibration is frequently undesirable as it wastes energy and produces unwelcome sound. For instance, the vibrational motions produced by running engines, electric motors, or other mechanical device are typically undesirable. Unbalances in the rotating components, uneven friction, or gear teeth meshing could all be to blame for these vibrations.
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some reactions used during glycolysis produce atp and others use atp. match the enzymes on the left with the reaction types they catalyze on the right.
Both phosphofructokinase kinase and dehydrogenase kinase catalyze events that result in the production of ATP during the phases of glycolysis as glucose is transformed into lactate or ethanol.
What is the process of glycolysis?Describe glycolysis. The process by which sugar is burned down to provide energy is known as glycolysis. It generates two pyruvate molecules, ATP, NADH, and water. There is no need for oxygen throughout the process, which occurs inside the cytoplasm of each cell. Both anaerobic and aerobic creatures experience it.
What are the primary roles that glycolysis plays?The first stage of cellular respiration is it. In glycolysis, sugar molecules are disassembled to produce the energy needed for cellular metabolism. It takes place in the cell's cytoplasm. The primary objective of metabolism is to create hundreds
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in n2o, nitrogen is the central atom and the oxygen atom is terminal. in of2, however, oxygen is the central atom. use formal charges to explain why.
In N2O, nitrogen is the central atom and the oxygen atom is terminal. in OF2, however, oxygen is the central atom O being in center gives 0 formal charges to all atoms. Hence, the structure is stable.
If it has two bonds and two lone pairs, as in case of water, it will have a formal charge of zero. If it has one bond and three lone pairs, as in case of hydroxide ion, it will have a formal charge of 1−. If it has three bonds and one lone pair, as in case hydronium ion, it will have a formal charge of 1+.
For N2O, N has 5 valence electrons, O has 6 valence electrons. Total valence electrons are 16.
The formal charge here can be calculated as:
Formal charge = valence electron in neutral atom - 1/2 (number of bond pairs - number of lone pairs)
FC (terminal N) = 5 - 1/2 (6-2) ⇒ 0
FC (central O) = 5 - 1/2 (8-0) ⇒ +1
FC (O) = 6 - 1/2(2-6) ⇒ -1
This means structure I is more stable as it has negative charge on O, which is more electronegative.
For OF2, O has 6 valence electrons, F has 7 valence electrons. Total valence electrons are 20. The possible structure is:
FC (F) = 7 - 1/2 (2-6) ⇒ 0
FC (O) = 6 - 1/2 (4-4) ⇒ 0
So, O being in center gives 0 formal charges to all atoms. Hence, the structure is stable.
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2-chlorohexane naoch3 in methanol draw the molecule on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars.
2-chlorohexane NaOCH₃ in methanol is the example E2 elimination reaction the reaction is given as :
CH₃CH₂CH₂CH₂CHClCH₃+ NaOCH₃ + -----> CH₃CH₂CH₂CH=CH₂CH₃
CH₃OH
It is an example of the E2 elimination reaction . the presence of solvent is as methanol. The major product will form is the hex- 2- ene , according to the Zaitsev rule. E2 mechanism is bimolecular elimination. the configuration will be E configuration. E2 is the single step elimination reaction.
CH₃CH₂CH₂CH₂CHClCH₃+ NaOCH₃ + -----> CH₃CH₂CH₂CH=CH₂CH₃
CH₃OH
Thus, 2-chlorohexane react with NaOCH₃ in the presence of methanol is the example E2 elimination reaction and the reaction is given as :
CH₃CH₂CH₂CH₂-CHCl-CH₃ + NaOCH₃ -----> CH₃CH₂CH₂CH=CH₂CH₃
+ CH₃OH
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If 87. 5 percent of a sample of pure 131i decays in 24 days, what is the half-life of 131i?.
If 87. 5 percent of a sample of pure 131 I decays in 24 days, what is the half-life of 131 i is 8 days.
The rate constant expression is given as :
k = 2.303 / t log a / a-x
where, t = 24 days
a = 100
a-x = 100 - 87.5 = 12.5 g
k = 2.303 / 24 log 100 / 12.5
k = 0.0866/ day
now, the t1/2 , half life is given as :
k = 0.693 / t1/2
t1/2 = 0.693 / 0.0866
t1/2 = 8 days.
Thus, If 87. 5 percent of a sample of pure 131 I decays in 24 days, then the half-life of 131 i is 8 days.
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Sodium hydroxide is a very reactive strong base. What is the chemical formula for sodium hydroxide?.
NaOH is the chemical formula for sodium hydroxide.
Sodium hydroxide is one of the inorganic compounds. Sodium hydroxide consists of Sodium ([tex]Na^{+}[/tex]) cations and Hydroxide ([tex]OH^{-}[/tex]) anions. Sodium Hydroxide can also be called Sodium oxidanide or caustic soda or Iye. The PH level of Sodium hydroxide is 10. Sodium hydroxide is corrosive in nature. It can cause severe burns on the skin and can cause damage to the eyes. Sodium hydroxide is white and odourless. It is water-soluble i.e. it can easily dissolve in water.
Sodium hydroxide can be used in various manufacturing processes. It can be used in the manufacturing of detergents and soaps. It can also be used as a drain cleaner. We can even use sodium hydroxide in the production of bleach. Other uses of Sodium hydroxide are canning, removal of heavy metals, food preservatives, paper making and recycling.
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Which statement concerning the interaction between two atoms is incorrect?
a. If two atoms are widely separated, there is very little attraction between them.
b. When two atoms are one bond length apart, the electrons on one atom are attracted to the
nucleus of the other atom.
c. When two atoms have very little separation between them, repulsion occurs.
d. A covalent bond occurs when electrons are shared between two nuclei.
e. As atoms get closer together, their electrons attract each other.
Statement which is incorrect concerning interaction between two atoms is that as atoms get closer together, their electrons attract each other.
What is an atom?An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
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What happens on an atomic level when a reaction between two elements such as sodium and chlorine results in two oppositely charged ions?.
When a reaction between two elements such as sodium and chlorine results in two oppositely charged ions on an atomic level, they combine to form an ionic compound where sodium looses its one electron and chlorine gains that one electron.
How do elements result in oppositely charged ions?Electrons are lost and gained when ionic bonding occurs. This includes an attraction between positively and negatively charged ions to form ionic networks and are called ionic compounds.
The atoms losing one or more electrons becomes a positively charged ion called cation while the gained electrons become negatively charged ions called anion.
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fluoride is a good example of how solvent identity can affect nucleophilicity because fluoride is a nucleophile in a polar protic solvent but a nucleophile in a polar aprotic solvent.
The fluoride ion is frequently utilized in organic nucleophilic processes as both a nucleophile and a leaving group, particularly in arene chemistry.
What is Nucleophilicity ?A functional group within another molecule that lacks electrons is replaced by an electron-rich chemical species in a chemical reaction known as a nucleophilic substitution. The substrate is the molecule that consists of the electrophile and the leaving functional group.
An important family of reactions that enable the interconversion of functional groups is nucleophilic substitution reactions. By using the tosylates (R-OTs), a different way of converting the -OH to a better leaving group, the variety of substitution reactions that are conceivable for alcohols can be expanded.
Why Fluoride is a nucleophile ?In polar protic fluids, the fluoride ion F is typically not a nucleophilic species. It is an extremely potent H-bond acceptor because it is the smallest single anion with the biggest negative charge. Its poor polarizability and these characteristics make it a weak nucleophilic species in protic liquids.
You don't interact with the solvent as much while you're in an aprotic solvent. Finally, fluoride is actually the best nucleophile in this circumstance, followed by chloride, bromide, then iodide. So you're moving toward simplicity in this situation.
Since fluorine is the smallest atom and atom size is more important than electronegativity when evaluating the stability of atoms in the same column, fluorine is the most nucleophilic element in polar aprotic solvent. Being the smallest, although being the most electronegative, it is also the least stable and most nucleophilic.
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a 600.0 ml sample of neon gas exerts a pressure of 0.50 atm. if expanded until the pressure is 0.125 atm, what will be the final volume of the sample?
A 600.0 ml sample of neon gas exerts a pressure of 0.50 atm. if expanded until the pressure is 0.125 atm. If it is expanded until the pressure is 0.125 atm, the final volume of a sample is 2400 ml.
The Boyle's law states that the temperature of the given mass of a gas is constant, when the product of the pressure and the volume is constant. It is written in mathematical form as
P₁V₁=P₂V₂
Where, P₁=0.50 atm
V₁=600.0 ml
V₂=?
P₂=0.125 atm
Rearrange the formula for V₂
V₂=(P₁V₁/P₂)
Plug all values in the formula
V₂=(0.50atm×600.0ml/0.125atm)
V₂=(300 ml/0.125)
V₂=2400 ml
Therefore, the final volume of a neon gas sample is 2400 ml.
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a tank contains helium gas at 490 mmhg, nitrogen gas at 0.75 atm, and neon at 520 torr. what is the total pressure in atm
The total pressure in atm is 2.08 atm.
The sum of all the individual partial pressures of each gas collectively gives the total pressure of the mixture of gases.
Given that, a tank contains :
helium gas at 490 mmhg
nitrogen gas at 0.75 atm
neon at 520 torr
To find: Total pressure in atm
∵ P(total) = P(He) + P(N₂) + P(Ne)
we know that,
760 mm Hg= 1 atm= 760 torr
now, we will convert the units of partial pressures of each gas to atm.
P(He)= [tex]\frac{490 torr}{760 torr/atm}[/tex] = 0.645atm
P(Ne) =[tex]\frac{520 torr}{760 torr/atm}[/tex]=0.684
P(N₂) = 0.75 atm
sum of the partial pressures will give the total pressure i.e
P(total) =(0.645+0.684+0.75)atm
P(total)=2.08 atm
Hence, the total pressure obtained after adding the partial pressures of the gases is 2.08 atm.
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which of the alkenes above is the least stable (highest in energy)? a which is the most stable (lowest in energy)?
The alkenes mentioned above are in order of decreasing stability and increasing energy with Stability the most secure (lowest in energy).
Why is alkene important?Alkenes have a variety of uses in manufacturing. They serve as the raw ingredients for the synthesis of alcohols, polymers, lacquers, detergents, and fuels. Acetylene, propene, and 1,3-butadiene are the three most significant alkenes for the chemical industry.
How alkenes are formed?Elimination processes, which remove two atoms from adjacent carbon atoms to create a double bond, are typically used to create alkenes. Dehydration of alcohols, dehydrohalogenation of halides, and dehalogenation of alkanes are all steps in the preparation process.
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A cold pack manufacturer has decided to change the chemical in its cold pack from ammonium nitrate to ammonium chloride. The original cold pack formulation used 100.0 g of room temperature (27.0 degrees Celsius) water and 35 g of ammonium nitrate. Assume that the solution has the same density and specific heat capacity as water and that any heat lost to the calorimeter is negligible. The molar enthalpy of solution for ammonium nitrate is 25.7 kJ/mol and for ammonium chloride is 14.8 kJ/mol.
a. Determine the lowest temperature reached using the original formulation.
b. Calculate the quantity of ammonium chloride needed to reach the same temperature.
The mass of ammonium chloride that will be needed is 27 g.
The number of moles of ammonium nitrate in 35 g is,
n = 35 g / 80.044 g/mol
⇒ n = 0.45 mol
The change in enthalpy caused by the reaction of ammonium nitrate in water is,
ΔH = n × ΔHₓₙ
⇒ ΔH = 0.45 mol × 15.7 kJ/mol
⇒ΔH = 7.1 kJ
The number of moles of ammonium chloride required to change in enthalpy of 7.1 kJ is,
n = ΔH / ΔHₓₙ
⇒ n = 7.1 kJ / 14.8 kJ mol⁻¹
⇒ n = 0.48 mol
The molar mass of ammonium chloride is 53,49 g/mol. The mass of ammonium chloride is,
m = 0.48 mol × 53.49 g/mol
⇒ m = 27 g
Hence, the mass of ammonium chloride that will be needed is 27 g.
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What metaphor does Hamlet use in his To be or not to be speech?.
In an allegory, Hamlet describes the world as "an un-weeded garden," drawing attention to the source of their melancholy.
Simile to compare this same world to a garden where weeds had taken over as well as begun to multiply. In such a double metaphor, Polo.nius refers to Ophelia as a baby, implying that she was naïve to believe Hamlet's affections ("tenders") toward her are genuine whereas they are,, throughout fact, counterfeit silver coins.
Hamlet considers de.ath versus su.icide, comparing the mis ery and harsh ness of life even against possibility of a worse option.
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Which option best describes something that causes ionic bonds to form?.
The option that best describes something that causes ionic bonds to form is the transfer of electron(s) from a metal to a nonmetal.
An ionic bond is formed by the complete transfer of some electrons from one atom to another. The atom that islosing one or more electrons becomes a cation which is a positively charged ion. The atom that is gaining one or more electron becomes an anion which is a negatively charged ion.
Metals are electropositive in nature and they tend to lose electrons, whereas nonmetals are electronegative and tend to gain electrons. A metal atom loses one or more electrons to form a cation with an octet. The same number of electrons are then accepted by the appropriate number of atoms of a nonmetal to form an octet in the anion, producing an ionic compound.
So for an ionic compound there is transfer of electron(s) from a metal to a nonmetal.
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_____ is needed for DNA synthesis, protein metabolism, wound healing, growth, development of sexual organs, and white blood cell formation.
Zinc
Zinc is needed for DNA synthesis, protein metabolism, wound healing, growth, development of sexual organs, and white blood cell formation.
Zinc is the vital mineral required for the DNA synthesis, the cell division, growth wound healing and cell formation. zinc is needed for the development the and the function of the most body parts. Zinc regulates the DNA synthesis. zinc also effect the hormonals regulation of the cell division. in general DNA polymerase do not appear the zinc. zinc is the important mineral.
Thus, Zinc is needed for DNA synthesis, protein metabolism, wound healing, growth, development of sexual organs, and white blood cell formation.
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67 g cacl2 is dissolved in water to generate a 0. 50 m solution. What is the volume of the solution, in liters?
Divide the number of moles by the molarity in units of moles per liter to get the volume of a solution in liters given the number of moles and molarity.
How much volume does a solution have?Given that a solution consists of both a solute and a solvent, its total volume is equal to the sum of the volumes of both the solute and the solvent it contains.
Given the number of moles and molarity, get the volume of a solution in liters by dividing the number of moles by the molarity in units of moles per liter. A solution with 6.0 moles and a molarity of 3.0 moles per liter, for instance, has a volume of 2.0 moles per liter.
The following is the formula to determine a solution's percent volume/volume:
%U/v. Volume of solute/Volume of solution * 100
Determine the required percent v/v
0. 50 m /67 * 100
=7.462
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Answer:1.2L
Explanation:The Correct Answer
compare solution a and solution b in each label and drag the label to the appropriate concentration description.
olution A = 0.5mM and Solution B = 100mm
Solution A = 2 mM of n+3 and Solution B = 1 M n+1
Solution A = 3.5mg/dL and Solution B = 3.7mg/dL
Solution A = 0% (w/v) and Solution B = 0% (w/v)
Solution A = 10-3 M and Solution B = 10-5M
Solution A = 12.23% (w/v) and Solution B = 12.3% (w/v)
Substance A is more conentrated than B
Equal concentrations
Substance B is more concentrated than A
A) Solution B of 100 mM is more concentrated than Solution A of 0.5 mM.
B) Solution B of 3.7mg/dL is more concentrated than Solution A of 3.5mg/dL.
C) Solution A = 0% (w/v) and Solution B = 0% (w/v) equal concentrations.
D) Solution A of 10⁻³ M is more concentrated than Solution A of 10⁻⁵M.
E) Solution B of 12.3% (w/v) is more concentrated than Solution A of 12.23% (w/v)
What is concentration?In chemistry, concentration can be described as the abundance of components divided by the total volume of a solution. Several kinds of mathematical descriptions can be distinguished: mass concentration, number concentration, molar concentration, and volume concentration.
The concentration is defined as the kind of chemical mixture, but most frequently refers to solutes and solvents in solutions. The molar concentration has variants, such as osmotic concentration and normal concentration.
Molarity, molality, Normality, and weight/ volume percentage are also used to define the concentration of the solution.
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What are the advantages of storing carbon dioxide in the ocean?.
This organic storage process is sped up by CO2 storage in the ocean. Transporting CO2 from the atmosphere to the deep ocean, where it will eventually end up and cause less harm, is its function.
What is the purpose of carbon?It burns coal, methane gas, and crude oil for energy (which is used to make gasoline). Plastic and steel alloys, among other materials, are made with it. Even black paint and printer ink are produced with it.
The location of carbon.Most of the carbon on Earth is preserved in rocks and sediments, with the remainder found in the ocean, atmosphere, and living things. These serve as the sinks or reservoirs where carbon cycles take place.
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at what temperature will a sample of neon gas exert a pressure of 0.750 atm and exhibit a density of 1.45 gl?
A sample of neon gas exert a pressure of 0.750 atm and exhibit a density of 1.45 g/L wil have temperature at 63°K
temperature of sample of neon gas exert a pressure of 0.750 atm and exhibit a density of 1.45 g/L can be calculate as follows
Calculating the temperature if we knew the density of a gas usually involves combining the formula for density (mass divided by volume) and the ideal gas law (PV = nRT).
ρ = PM/RT, where M is molar mass, mollar mas of neon is 10
from this formula we can conclude
T = PM/ ρR
T = 0.750 atm x 10 g/ mol
1.45 g/L x 0.0821 L·atm/mol·K
T = 63°K
Therefore, a sample of neon gas exert a pressure of 0.750 atm and exhibit a density of 1.45 g/L wil have temperature at 63°K
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a student is asked to make 100 ml of 0.196 m kcl solution. how many ml of 0.585 m kcl is needed to make the 0.196 m kcl solution?
3.36ml volume of of 0.585 m KCL solution is needed to make 0.196m kcl solution.
Molarity is a measure of the concentration of a chemical species, in particular of a solute in a solution in terms of amount of substance per unit volume of solution. The unit for molarity is the number of moles per liter. It has the unit symbol mole/l.
here, 100ml of 0.196m Kcl solution made. Moles of the solution is given by the expression,
Moles = Molarity . volume (in liter)
Moles in 100ml 0.196 m Kcl solution= Molarity . volume in liter
= 0.196 . 0.1
= 0.0196 mole
We know that 1ml is equal to 0.001L. By converting this value and put it in the expression we get the value of mole.
Volume= moles/molarity
Volume of the 0.585m KCl solution = moles /molarity
= 0.0196/0.585 L
=0.033504 L= 3.3504 ml
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Give the relative rates of reaction of the four carboxylic acid derivatives below with methylamine to give an N-methyl amid Most reactive 2nd most reactive 3rd most reactive Least reactive
The second most reactive of the four carboxylic acid derivatives' relative reaction rates.
What do carboxylic acids do in the body?However, carbonic acid, not carboxylic acid, is present in human blood. It performs its function in the respiratory system, where it is in charge of concluding the hormonal process that enables breathing. The process is as follows: Blood is transported to the tissues and organs after it has been oxygenated.
Is carboxylic acid bad for people?The screening assessment resulted in the conclusion that none of the four chemicals in the carboxylic acid group are hazardous to the environment or to human health at the present exposure levels.
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all atoms of the element potassium have 19 protons. one of the most stable types of potassium atoms has the mass number 39. how many neutrons make up oneof these protassium atoms
20 neutrons makeup one of these potassium atom.
What is atom?
atom is a particle of the matter that uniquely defined as a chemical elements . An atom is consist of a central nucleolus that is surrounded by one or more negetively changed of electrons.
For atoms in the periodic table, the given mass number is the sum of the number of the protons (also called the atomic number) and the number of the neutrons inside its nucleus. Mathematically,
mass number = atomic number + number of neutrons
Substituting, 39 = 19 + n = 39 - 19 = 20
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based on this value and the standard enthalpies of c2h2 formation for the other substances, the standard enthalpy of formation of is kj/mol.
According to the given statement is Standard C2H2 formation enthalpy is +224 kJ/mole.
Enthalpy can be either good or negative:As a result, an exothermic reaction takes place, and if it releases more energy than it absorbs, its enthalpy will be negative. Think of this as a portion of the reaction's heat evaporating (or being eliminated). Because endothermic reactions take or utilize more energy than they generate, they have positive enthalpies.
What is an enthalpy unit?Enthalpy is a characteristic or state variable which mirrors energy; it shares energy's dimensions and is quantified in joules and ergs as a result. Enthalpy's value is purely influenced by a system's composition, environment, and physical properties—not by its past.
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