All of the acidic impurities present in the reaction mixture could be eliminated with the aid of sodium carbonate. Any acidic contaminant can be detected by the addition of sodium carbonate, which causes carbon dioxide to form.
The initial action can be neutralizing the response, which enables you to isolate the ester product. The addition of sodium bicarbonate, a weak base, could help achieve this. The carboxylic acid and acid catalyst react with sodium carbonate, raising the pH of the solution as a result.
A byproduct of CO2 fuel is created when the natural portion of the reaction aggregate is washed with sodium bicarbonate to remove extra acetic acid. You can release the pressure that develops below by venting the vial.
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Predict the carbenoid addition products of the following reactions: trans-hex-3-ene + CH2I2, Zn(Cu) cis-hept-2-ene + CH2I2, Zn(Cu)
The reactions that result in the carbenoid addition products. Trans-hex-3-ene with CH2I2, Zn (a) (Cu). 3-Nitro-pent-2-ene. ALKENE HYBRIDIZATION When three atoms are joined to a carbon (that is, one of the bonds is a double bond).
What is the carbenoid addition products?
A gateway functional group is the double bond in an alkene. The basis for the remainder of your study of organic chemistry is laid by alkene reactions, which generate numerous additional functional groups. The most frequent reactions of double bonds change the pi bond into a sigma bond because single bonds (sigma bonds) are more stable than pi bonds. As an illustration, catalytic hydrogenation splits the H-H sigma bond into two C-H sigma bonds (Section 7-8). Exothermic (H° = approximately -80 to -120 kJ>mol or approximately -20 to -30 kcal>mol).
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Using the balanced equation below,
how many grams of cesium fluoride
would be required to make 73.1 g of
cesium xenon heptafluoride?
CSF + XeF6 CsXeF7
To solve this problem, we can use the coefficients in the balanced chemical equation to determine the ratio of the amounts of each reactant and product. This will allow us to determine the amount of cesium fluoride needed to produce a given amount of cesium xenon heptafluoride.
In the given equation, we can see that for every 1 molecule of cesium fluoride, we get 1 molecule of cesium xenon heptafluoride. This means that the ratio of cesium fluoride to cesium xenon heptafluoride is 1:1.
We are given that we want to make 73.1 g of cesium xenon heptafluoride. Since the ratio of cesium fluoride to cesium xenon heptafluoride is 1:1, we can use the mass of cesium xenon heptafluoride to determine the mass of cesium fluoride needed. Specifically, we can set up the following equation:
CsF mass = CsXeF7 mass
Substituting the given values into this equation, we get:
CsF mass = 73.1 g
Solving this equation gives us a mass of 73.1 g of cesium fluoride.
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What is water vapor has been released into the atmosphere it rises and cools turning back into liquid What is the process called?; What is it called when water goes back into the atmosphere?; What happens when water vapor rises into the atmosphere and cools?
The process of cools turning back into liquid is called condensation. the process of water goes back into the atmosphere is called evaporation. when water vapor rises into the atmosphere and cools is forms cloud.
What is water vapor has been released into the atmosphere it rises and cools turning back into liquid What is the process called as condensation. The condensation when the water vapor converts into the liquid sate. when water goes back into the atmosphere is called as evaporation . the evaporation is the process when the liquid turns to the water vapor.
when water vapor rises into the atmosphere and cools it will forms the cloud.
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What does pH Measure? | What is the pH of water?
The pH of a solution gauges how acidic it is. The pH of pure water is 7.
The pH scale is used in chemistry to determine whether an aqueous solution is basic or acidic. The term pH originally meant "potential of hydrogen." Acidic solutions often have lower pH values than basic or alkaline solutions.
Water is neither acidic nor basic, having a pH of 7, which indicates that it is neutral. The scale goes from 0 (extremely acidic) to 14 (very alkaline) (very basic). Water often falls between the range of 6.5 and 8.5 on the scale.
Pure water has a pH of seven. In pure water, the concentration of the hydrogen ion and the hydroxide ion is equal, making it neutral.
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From your test data, list general properties that can be associated with each type of bonding in a solid.
Answer:
it is a soild only
What term describes fog?; What is the solute of fog?
The term aerosol can be used to describe fog, in which the solute is water (H₂O).
An aerosol is a homogeneous colloidal solution in which the dispersion medium or solvent is a gas and the dispersed medium or solute is a liquid. In this case, the dispersion medium is air and the dispersed medium is water.
A fog usually occurs when the relative humidity approaches 100%. In case of fog, this water is often found in the form of droplets which sometimea precipitates as water droplets, often known as dew. In colder regions, the water is sometimes present as tiny ice crystals.
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Which of the following features of a 1H NMR spectrum give useful information about the structure of a compound? Choose all answers that apply.
----------------------------------------
The spin-spin splitting of signals
The number of the signals
The area under the signals
The signal distance above the baseline
The chemical shift of the signals
The number of the signals
The chemical shift of the signals.
The spin-spin splitting of signals.
Count how many signal sets you have.
• This will tell you how many types of hydrogen-bearing carbons you have. Hydrogens attached to symmetry-equivalent carbons will give equivalent signals) . If you have asymmetric looking signals, there is a good chance that two or more different
signal sets may be overlapping
Check the integration of each signal set.
• 3HCH3 group 2HCH2 group 1HCH or OH group.The above are true if there isn’t any accidental overlapping. Clean CH3 or CH2 signal sets will normally have reasonable shape symmetry.Effective recognition and integration of signal sets can help you know how many CH3’s and
CH2’s you have in your molecule
Check diagnostic “chemical shift” windows of the lines
• Use yes-or-no checklist regarding the presence of key functional groups.Things can get more complicated if two or more functional groups are both affecting a common
signal set.Chemical shift information can quickly tell you whether hydrogens are attached to arenas or
alkenes, and tell whether a CH2 or CH3 or CH signal set is attached to a single bond oxygens or
a carbonyl or an aromatic.
The splitting (number of lines) in each signal set
• The splitting provides information about what is connected to a given carbon
a. N lines N-1 “neighbor” H’s (when working from spectrum to structure)
b. N neighbors N+1 lines (when predicting spectrum from structure)
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Consider the product of the following mechanism. How many distinct signals (peaks) would appear in the (proton- decoupled) 13C NMR spectrum for the product? H-Br product 2. 3 3 4 5
In the (proton-decoupled) 13C NMR spectrum for the product, 5, distinct signals (peaks) would show up.
A spectrum is a state that can fluctuate without gaps across a continuum and is not constrained to a particular range of values (plural: spectrums). The term was first used in optics to refer to the rainbow of hues visible light takes on after passing through a prism. As our knowledge of light increased, it became to encompass the full electromagnetic spectrum. Thus, it evolved into a mapping of a range of magnitudes (wavelengths) to a range of attributes, including the perceived "colors of the rainbow" and other properties that correspond to wavelengths outside of the visible light spectrum.
Since then, analogies with spectrum have been used to discuss subjects unrelated to optics. Thus, one could discuss the "spectrum of political opinion".
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When sodium bromide, NaBr, dissolves in water, which of the following is formed in aqueous solution?
A) Na+ ---- H - O
|
H
B) Na+ ---- O - H
|
H
C) Br- ----- O - H
|
H
D) all of the above
E) none of the above
Br- ——- In an aqueous solution, O-H is generated as follows: Water and sodium bromide, NaBr, when dissolved,
The correct answer is C
How do valence electrons work?The electrons in an atom's outermost energy level or shell are known as valence electrons. With six valence electrons, oxygen has two in the 2s subshell и four in the 2p subshell. The oxygen valence electron configuration can be written as 2s22p.
Are valence electrons typically 8 in number?The octet rule states that in order for most biologically significant elements to remain stable, they must have eight electrons in the outermost shell. Despite having the 3n shell, which has a maximum capacity of 18 electrons, as their valence shell, some atoms can nonetheless be viable with an octet.
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Why can't we just go directly from grams of reactant to grams of product?; Why mass can neither be created nor destroyed in a chemical reaction?; What is the principle that states that matter is not created or destroyed?; When two substances create a solution what happens to its mass?
The net change in mass between the reactants and products before and after a chemical reaction is zero, according to the rule of conservation of mass. This implies that mass cannot be produced or destroyed.
What are the names of the four chemicals?Intermetallic compounds are held together by metallic bonds, ions are held together by ionic bonds, molecules are held together by covalent bonds, and coordination complexes are held together by coordinate covalent bonds.
What exactly is a chemical?Every molecule that receives just an analytical grade is considered to be a chemical. Therefore, to put it another way, a chemical always contains the same "substance." There are several chemicals found in natural things like water.
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which of the following are potential safety concerns for this lab? two of the answer choices below are correct...select the two correct answers. (grading note: for this type of question, canvas will award points for correct selections and deduct points for incorrect selections. make sure you are focusing on the safety concerns for this specific experiment.) group of answer choices broken glassware caustic bases (such as naoh) organic solvents (such as acetone or toluene) open flames
Since the flame test in this experiment requires the use of heat. Consequently, two potential risks include glassware shattering during the flame test and open flames. The correct answers are a and e.
What is a flame test?A qualitative test called the flame test is employed in chemistry to help identify or rule out the identity of a metal or metalloid ion present in an ionic compound. A distinctive color that can be seen with the eye may be released if the compound is placed in the flame of a gas burner.
Why do we do flame tests?The flame test is used to visually identify a metal or metalloid ion that is unknown.
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in both the structures shown, replacement of ha and hb, in turn, with an atom z will produce two different compounds that are diastereomers of each other. ha and hb are therefore diastereo -topic and will give nmr signals.
In both the structures shown, replacement of ha and hb, in turn, with an atom z will produce two different compounds that are diastereomers of each other. ha and hb are therefore diastereomer -topic and will give different or distinct nmr signals.
Stereoisomers that are not enantiomers or related as object and mirror images are known as stereoisomers. Diastereomers are not mirror images of one another and cannot be superimposed, in contrast to enantiomers which are. Diastereomers can differ in their reactivity and physical characteristics. They differ in their melting points, boiling points, and densities. There are at least two stereocenters there.
It is simple to mix up diasteromers with enantiomers. Three-bromo-2-butanol, for instance, has four steroisomers. SS, RR, SR, and RS are the four potential combinations (Figure 1). One of the molecules is both the diasteromer and the enantiomer of each of the other two molecules (SS is enantiomer of RR and diasteromer of RS and SR). SS's mirror.
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the balanced equation for part 2 of the experiment is: zn (s) cu2 (aq) cu (s) zn2 (aq) this reaction is...
This reaction shows that Cu is reduced and Zn is oxidized and the reaction takes place spontaneously.
Those species are reduced readily which has high value of reduction potential. Here, Cu2+ has a reduction.
If the typical electrode potential for a redox reaction, Eo (redox reaction), is positive, the reaction is considered spontaneous. Redox reaction Eo (which is positive) will cause the reaction to move forward (spontaneous). (See voltaic and galvanic cells.)
A spontaneous reaction is one that favors the creation of products under the reaction's current conditions.
Free energy is released during spontaneous reactions, so the sign of G must be negative. There are four different possible combinations because both H and S can be positive or negative depending on the specific reaction's characteristics.
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if the system is at equilibrium, waht would happen if the follwoing changes are applied?/the volume of the container incrased why
Conversely, if you decrease the pressure (by increasing the volume of the container), equilibrium will shift to the favor the side with the most moles of gas, since more moles will occupy a greater volume. If both side of the equation have the same number of moles of gas, then there will be no change in the position of equilibrium.
The word equilibrium means "equilibrium" and indicates that a chemical reaction is an equilibrium between the reactants and the products participating in the reaction.
Equilibrium describes the state of a process where observable properties such as color, temperature, pressure, and concentration show no change.
Chemical equilibrium is a dynamic state in which front and back reactions occur at rates such that the macroscopic composition of the mixture remains constant. The equilibrium symbol ⇌ thus symbolizes the fact that the reaction occurs in both forward and reverse directions.
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help me pls
Hydrogen gas is produced when we react magnesium
metal with hydrochloric acid:
Mg(s) + 2 HCl(aq) → MgCl₂(aq) + H₂(g) T
(a) If 4.50 g of hydrogen gas is collected at STP, what
volume of hydrogen does this represent?
(b) If 0.52 mol of magnesium completely reacted, what
amount of hydrogen gas (in moles) would be produced
at STP? How many grams of hydrogen is this?
The amount of CO2 produced at STP is 4.5 g, and the amount of hydrogen biogas is 0.03969 L.
For what does STP stand?The nominal atmospheric conditions at sea level are referred to as "standard temperature and pressure" (STP). The temperature and pressure are both zero degrees Celsius (atm).
How may STP be put to use?A Layer two wireless protocol called Spanning Pine Protocol (STP) is used to stop loops from forming within a topology of a network. STP was developed in order to prevent the issues that occur when pcs transfer files on a LAN with redundant pathways.
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describe one chemical property of group 1 metals that results from the atoms of each metal having only one valence electron.
Alkali metals have a high electropositive polarity.This is so that each alkali metal's atom can readily create a positive ion by releasing its lone valence electron.
What are group 1's chemical characteristics? Electronegativity is a chemical characteristic of Group 1 metals that derives from each metal's atom having only one valence electron.Alkali metals are another name for Group I elements.Sodium, lithium, potassium, cesium, francium, and rubidium are some of them.In seawater, you can find them.Electronegativity is a chemical characteristic of Group 1 metals that derives from each metal's atom having only one valence electron.This refers to the atoms' propensity to attract electrons. Elements from Group 1 have similar properties.All of them are supple silver metals.These metals are highly reactive and have low melting temperatures due to their low ionization energy.As you descend the table, this family becomes more reactive.To learn more about chemical property refer to:
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place the following substances in order of increasing boiling point. ch3ch2ch3 ch3och3 ch3ch2oh ch3ch2ch3 < ch 3och 3 < ch 3ch 2oh ch 3ch 2oh < ch3ch2ch3 < ch 3och 3 ch 3ch 2oh < ch 3och 3 < ch3ch2ch3 ch 3och 3 < ch3ch2ch3 < ch 3ch 2oh ch3ch2ch3 < ch 3ch 2oh < ch 3och 3
The substances in the increasing order of boiling point are
CH3CH2CH3<CH3OCH3<CH3CHO<CH3CH2OH
What is the boiling point of a compound?
The boiling point of organic compounds can reveal vital details about their structural makeup and physical features. The boiling point of a substance aids in identifying and describing it. When the air pressure and the vapour pressure of a liquid are equal, the liquid boils. The kinetic energy of a molecule affects vapour pressure.
Despite having similar molecular weights across the board, CH3CH2OH exhibits the most intermolecular h-bonding, giving it the greatest boiling point.
Lowest boiling point for CH3CH2CH3 due to weak van der Waals forces. Furthermore, CH3CHO has a higher boiling point than CH3OCH3 because it exhibits more interactions between dipoles.
Therefore the order of increasing boiling point goes CH3CH2CH3<CH3OCH3<CH3CHO<CH3CH2OH
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Which answer choice number matches the rate law expression for the reaction? (I'm struggling with differential rate law equations. Question and more information is on picture)
The correct rate law of the reaction is depicted by the expression that has been shown in option 4.
What is the rate law?We know that the rate law has to do with the expression that shows how the reaction is carrying on. In this case, we can see that the reaction is occurring between ammonia and boron fluoride.
The rate law would show us the individual order of reaction in each of the reactants that are in the reaction. As such, we can see that the correct rate law shows the changes in the concentration of the species has shown in the table.
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Which is the order from fastest to slowest for the rates of the SN2 reactions of these alkyl bromides with CH3S-/DMSO?
a. 1>2>3
b. 3>1>2
c. 2>3>1
d. 1>3>2
The order from fastest to slowest for the rates of the SN2 reactions of these alkyl bromides with CH3S-/DMSO is 2>3>1. Option C.
Primary alkyl halides undergo SN2 reactions faster than secondary and tertiary ones. Compound IV reacts faster in the SN1 reaction than in the SN2 reaction. This is due to the steric hindrance and difficult access of the nucleophile from the side opposite the leaving group.
The rate-limiting step in the reaction is the attack of the nucleophile on the substrate. Therefore, SN2 is easier to run against stronger nucleophiles. Since there are two molecules in the transition state, the reaction is a bimolecular reaction, indicated by the number 2 in the SN2 symbol. The kinetics of the SN2 reaction is first order within the substrate and first order within the nucleophile.
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classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds.
Noble gases, which make up the majority of atomic atoms, are the most stable chemical elements. Since they are independent, they can exist. To create compounds, they can also go through chemical reactions. On the other hand, molecular elements are chemical substances that have at least two atoms of the same chemical element in them.
Generally speaking, ionic bonding can be seen in compounds where a metal is bound to a non-metal or a semi-metal. Molecular compounds are those that are made up entirely of non-metallic elements or semi-metals and non-metallic elements.
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be able to use results of chemical reactions to idetnify unknown anionas, cations, or ionic compounds
Sodium hydroxide solution in the presence of 2M and ammonium hydroxides are used to identify cations (ammonia solution). Silver nitrate or lead nitrate solutions are used to test for anions such as halides.
What is an example of a cation?An ion with one or more lost electrons and a huge gain charge is referred to as a cation. The cation of an element is smaller than that of the neutral atom due to the removal of one or more electrons to produce a cation. The following are some examples of cations: Calcium: Ca
A cation and an anion are what?Ions with a positive charge are called cations. Ions with a negative charge are called anions. Ionic molecules or atoms are charged. A balanced atom will become a positive charges cationic if it loses one or even more electrons. An anion, which is negatively charged, forms when a balanced element gains one or more electrons.
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The correct question is :
How can you identify cations and anions in an unknown solution?
of the three types of subatomic particles, only neutrons do not carry charge. protons carry a positive charge, and electrons carry a negative charge. protons and neutrons are bound in the nucleus, while electrons orbit the nucleus. when the number of each type of subatomic particle in an atom changes, the characteristics defining the atom also change. match the appropriate phrases with the type of subatomic particle that completes the defining characteristic.
To complete the definition joining and ordering the given phrases, the atom, protons, neutrons and electrons have been considered as a sequence.
Ordered definitions of atomic particlesIn the atom, the defining characteristics change when the amounts of groups of subatomic particles vary, that is, when the number of neurons, protons, or electrons changes.
The numbers of protons and neutrons vary equally because they are bound together in the nucleus.
The number of electrons is different from that of protons and neutrons, and these are orbiting around the nucleus.
Protons carry a positive charge
Electrons have a negative charge.
Neutrons have a neutral charge, that is, they have no charge.
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How many moles are in MgO?; How many moles are in 10g of MgO?; What is the grams of MgO?; How many moles are in 20 grams of MgO?
the correct answer is 20g of MgO contains 0.5 moles
Amount of MgO, w = 20g
Molar mass of MgO, M = (24+16)g mol-¹ = 40g mol-1
To find:
No. of moles of MgO in 20g, n = ?
We know that,
No. of moles = given mass(w) molar mass(M)
:: no. of moles in 20g of MgO, n = 20g 40gmol-1 → n = 0.5 mol
The molar mass of a complex mixture is determined by dividing its weight by the amount of that chemical, represented as the number of moles in the test, expressed in moles. The molar mass of a material is a bulk characteristic instead of a molecular one.
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the aluminum sample is dissolved in hcl and h2 gas is produced and collected over water. the volume of h2 gas produced is 73.8 ml. what is the volume of gas, in liters? ***do not enter units with your answer. do not use scientific notation. correct significant figures are required\.\***
The volume of gas is 62.2 L
The balance chemical equation is
2Al + 6 H+ → 2Al3+ + 3H2
n al/nH2 = 2/3
nH2 = 3/2 nAl
nAl = given mass / molar mass = 42/27 = 1.56 mol
nH2 = 3 × 1.56/2 = 2.34 mol
so, accordingly to ideal generation PV = nRT
V = nRT/P
T = 30 degree celsius = 303K
V = 62.2 L
The amount of occupied three-dimensional space is measured in volume. It is typically expressed quantitatively using SI-derived units (such the cubic meter and liter) as well as other imperial or US-standard units (such as the gallon, quart, cubic inch). By the definition of length, volume and length are connected (cubed). The volume of a container is commonly understood to be its carrying capacity, or the amount of fluid (liquid or gas) that it could hold, as opposed to how much actual space the container occupies.
In the past, standardized containers were used to calculate volume first, followed by naturally occurring vessels of a similar shape. A number of simple three-dimensional shapes have volumes that can be calculated using mathematical methods.
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in general, beads are the ideal mix ratio for working with monomer liquids and polymer powders.
For working with monomer liquids and polymer powders, medium beads are the ideal mix ratio.
A monomer is a molecule of any one of a group of primarily organic chemicals that can combine with other molecules to generate much larger molecules, or polymers. A monomer's ability to form chemical bonds with at least two other monomer molecules, known as polyfunctionality, is its primary characteristic. Bifunctional monomers can only create linear, chain-like polymers, whereas higher functional monomers can create cross-linked, network polymeric products.
functional group: polymers and monomers
functional group: polymers and monomers
Monomers that have either a double bond between two atoms or a ring of three to seven atoms are known to undergo addition reactions; examples include styrene, caprolactam (which produces nylon-6), butadiene, and acrylonitrile (which copolymerize to form nitrile rubber, or Buna N).
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Selective Uptake and Gas Transport in Chemically Modified PIMs
Selective uptake is the procedure with the aid of using which membranes in cells decide what molecules can cross in and what molecules can exit of a cell.
The studies aimed to expand chemically changed PIM-1s to be used in adsorption and fueloline separation processes. In particular, the nitrile institution in PIM-1 became transformed to numerous one of a kind purposeful organizations to control the interplay capacity of PIM-1 with one of a kind species. Synthesis of PIM-1 became done with the aid of using one of a kind methods, the usage of each the low (72h, 65 °C) and the excessive temperature (forty min, 160 °C) methods.
The response led to a aggregate of hydrolysis products. The composition of the polymer has a profound impact at the very last overall performance of the polymer. Powder samples of hydrolysed PIMs had been used withinside the studies. The discount of nitrile to number one amine became done the usage of borane dimethyl sulphide complex, ensuing in amine PIM-1.
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calculate the theoretical oxygen demand (in mg/l) of a solution containing 450 mg of glucose (c6h12o6) in 2 liters of distilled water. (hint: write and balance the oxidation reaction of glucose) (4 pts)
The theoretical oxygen demand THOD=239.792 mg/L is given for the solution of 450 mg of glucose.
Theoretical Oxigen demand (THOD):
is the theoretical quantity of oxygen
required to oxidize the natural fraction of a
waste as much as carbon dioxide and water.
→ Csln = 450 mg C6H12O6 / 2 L H2O =225 mg/L sln.. mm C6H12O6 = 180.156 g/molbalanced reaction:C6H12O6+ 602 6CO2 + 6H2O mol C6H12O6 = 1 mol→ mass C6H12O6 (180.156 g/mol)(1 mol) = =180.156 gThe fee of ThOD is decided when180.156 g C6H12O6 devour mass O2 =.mm C6H1206 = 180.156 g/molbalanced reaction:C6H12O6+6O2 6CO2+6H2O mol C6H12O6 = 1molRightarrow massC6H12O6 = (180.156g / m * ol)(1mol) = 180.156 ghe fee of ThOD is decided when180.156 g C6H12O6 devour mass 02 =6(32) = 192 g Oxygen; then in an answer of225mg / L you have: → ThOD = (192/180.156)x 225mg / LThOD = 239.792mg / L.Read more about oxygen:
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Fill in the Blanks Type your answers in all of the blanks and submit While we haven't really discussed this yet, there is actually a mathematical relationship that links wavelength and energy. This is a very famous equation and takes the form E = hc/ 6.63 x 10-34 and c= the speed of light = 3 x 108 m/s. where h = planks constant = Use this equation to determine the Energy of the following photons: Type your answer here 1. A photon with a wavelength of 500 nm. E = Type your answer here J 1. A photon with a wavelength of 840 nm.
A photon with a wavelength of 500 nm. E = 3.98 X 10-13 J ~ 4X 10 J,A photon with a wavelength of 840 nm lambda is 986.241
Given: Energy (E) =hc/lambda, where, h = planck's Const. = 6.63 X 10 34 J sec, C= Speed of light= 3x 108 ms, Wavelength (in m)= lambda
(i) d = 500mm = 500x109m E= 6.63 X 10-34 JS x 3x 108 ms-1 5 x 107 = 5x107 mT, E = 3.98 X 10-13 J ~ 4X 10 J. 2) lambda= 840mm = 840X109 m = 8.40x 107m 840X109 m = 8.40x 107m, E= 6·63× 10-34 JSX 3X 108 ms/8.40 X 10-7m=2.37X/0, (iii) Given: E=5-15 X 10-19 E = bcJ = 5-15x10 195 = 6·63x10-34×3×108 lambda = 3.862 × 10 = 986.241. The wavelength refers to the distance among 2 sequential waves' intersection point. The term "corresponding points" describes two pts or particulate that are within the same phase, that is, pts that have finished exactly equal fragments of one‘s periodic motion. The distance among both identical points (adjoining crests) in adjoining cycles of the a sound wave transmitter perpetuated in space or through a wire is described as the wavelength. This distance is usually specified in wireless communication systems in metres (m), centimetres (cm), or millimetres (mm) (mm). Radio signals, light waves, and infra - red (heat) waves everybody has distinctive differences that they follow as they traverse space. Each wave has its own distinctive structure and length. The particular wavelength between peaks (high points).
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FILL IN THE BLANK the bonds that link the base pairs in the dna double helix are ______ . the bonds that link the base pairs in the dna double helix are _______. ionic bonds ester bonds hydrogen bonds peptide bonds hydrophobic interactions
the bonds that link the base pairs in the dna double helix are peptide bonds hydrophobic interactions ionic bonds ester bonds hydrogen bonds
A hydrogen bond is an electrostatic attraction force between such a hydrogen ion that's also tightly bonded to a more electron - deficient "donor" atom or group and then another electronegative atom with a single pair of electrons—the hydrogen bond electron donor. Hydrogen bonding isn't a sharing of electrons to a hydrogen atom, instead it is a type of dipole-dipole attraction between particles. The force of attraction between a hydrogen atom covalently bonded to a very electronegative including an N, O, or F atom and a very electronegative atom causes it. Because hydrogen has been attached to the a comparatively electronegative, and this electronegative atom is a hydrocarbons donation, the hydrogen bond is the strongest type of link between molecules. As a result, the resulting charge is more powerful.
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A 20.00 mL sample of aqueous oxalic acid, H2C2O4 was titrated with a 0.09113 M solution of
potassium permanganate, KMnO4:
2????????????4- ( (????????) + 5 H2????2????4 (????????)+ 6 H+ (????????) → 10 ????????2(????) + 2 ????????2+ (????????) + 8 H2???? (ℓ)
A volume of 23.24 mL was required to reach the end point. What is the oxalic acid molarity?
The molarity of the oxalic acid solution titrated with the potassium permanganate solution is 0.053 M
To determine the molarity of the solution, stoichiometric relationships and rules of three are used.
Balanced equation of the reaction2 KMnO4 + H2C2O4 → 2 CO2 + K2O + 2 MnO3 + H2O
Determination of moles of KMnO4 usedIf there are 0.09113 mol of KMnO4 in 1 liter of solution then in 0.2324 liters there are:
X moles of KMnO4 = 0.02324 x 0.09113 x 1
X moles of KMnO4 = 0.0021 mole
Stoichiometric calculation of moles of oxalic acidIf 2 mol KMnO4 combines with 1 mol H2C2O4 then 0.0021 mol KMnO4 combines with:
X mol H2C2O4 = 0.0021 mol KMnO4 x 1 mol / 2 mol KMnO4
X mol H2C2O4 = 0.0021 x 1 / 2 = 0.001 mol
Calculation of the molarity of the oxalic acid solutionIf there are 0.001 mol H2C2O4 in 0.02 liters of solution then in 1 liter there are:
X mol H2C2O4 = 1 x 0.001 / 0.02 = 0.053
Therefore, the molarity of H2C2O4 is 0.053M
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