Option (c) is correct All of these choices:
Sorbitol used in candies and gumsSorbitol is sugar alcoholabsorbed and metabolized more slowly than glucose and other sugarsSorbitol is one of the main photosynthetic end products and serves as a storage and transport sugar in most plant families. Synthesis of sorbitol takes place by catalysis of glucose via NADP-dependent sorbitol-6-phosphate dehydrogenase (S6PDH). Sorbitol is further degraded to fructose by NAD+ sorbitol dehydrogenase in sink tissues. It plays an important role in osmotic adjustment in cell cytoplasm under various abiotic stresses such as salinity, chilling, and drought .Sorbitol is slowly absorbed by passive diffusion in the small intestine.Sorbitol is a white, hygroscopic, crystalline powder. It melts at 97°C and has excellent pH and heat stability in food processing.
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Which information will be most helpful in determining the atom's identity?; What is the elemental symbol for an atom with 20 protons 21 neutrons and 22 electrons?; What element has 22 protons and 22 neutrons?; What is the mass number of an atom that consists of 20 protons 22 neutrons and 20 electrons?
Answer:20Ca
Explanation:
20Ca because the lower number is the atomic number representing the number of protons and.
Nitrogen and Oxygen form an extensive series of oxides with the general formula NxOy. One of them is a blue solid that comes a part, reversibly. In the gas Phase. It contains 36.84%N. What is the empirical formula of this Oxide? in chemistry
determine the entropy change for the above reaction from the following standard entropies of the reactants and products:
To determine the entropy changes for a chemical reaction; we have seen that the energy given off (or absorbed) by a reaction, and monitored by noting the change in temperature of the surroundings, can be used to determine the enthalpy of a reaction (example by using a calorimeter).
Changes in internal energy, that are not accompanied by a temperature change, might reflect changes in the entropy of the system. For eg., a change in entropy associated with the Haber process for the production of ammonia from nitrogen and hydrogen gas.
N₂(g) + 3H₂(g) --- 2NH₃(g)
At 298K as a standard temperature:
S°(NH₃) = 192.5 J/molK
S°(H₂) = 130.6 J/molK
S°(N₂) = 191.5 J/molK
Solution,
From the balanced equation we can write the equation for ΔS°(the change in the standard molar entropy for the reaction):
ΔS° = 2*S° (NH₃) - [S°(N₂) + (3*S°(H₂)]
ΔS° = 2* 192.5 - [191.5 + (3*130.6)]
ΔS° = -198.3 J/molK
It would appear that the process results in a decrease in entropy i.e. a decrease in disorder. This is expected because we are decreasing the number of gas molecules.
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which of the following uses metal clips placed over plastic slots to connect individual copper wires? A 25 pair. B 100 pair. C 110 block. D 66 block.
The accompanying 110 block connects individual copper wires using metal clips over plastic slots.
What are the uses of copper wires?Copper is a common electrical conductor used in a wide variety of electrical wiring. Copper wire is used to create, transmit, and distribute electricity in electronic circuitry, telecommunications, and many other electrical equipment.
Which copper wire works the best?The copper produced through electrolysis is known as pure copper of electrolytic copper. The majority of copper cables are made with this highest quality of copper (greater than 99.95%). The conductivity is at its optimum when this purity is present, and even a small drop in purity can reduce it.
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What mass of potassium chlorate is needed to generate 114.0 L of O2 at 0.720 atm and 291 K?
Answer:
281 g KClO₃
Explanation:
To find the mass of potassium chlorate (KClO₃), you need to
(1) calculate the number of moles O₂ (using the Ideal Gas Law)
(2) create a balanced equation involving KClO₃ and O₂
(3) convert moles O₂ to moles KClO₃ (using mole-to-mole ratio from balanced equation)
(4) convert moles KClO₃ to grams (using the molar mass of KClO₃)
It is important to arrange the ratios/conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs like the given values.
(Step 1)
To find the amount of moles O₂, you need to use the Ideal Gas Law equation:
PV = nRT
In this equation,
-----> P = pressure (atm)
-----> V = volume (L)
-----> n = number of moles
-----> R = Ideal Gas Constant (0.08206 atm*L/mol*K)
-----> T = temperature (K)
You can plug the given values into the equation and simplify to solve for "n".
P = 0.720 atm R = 0.08206 atm*L/mol*K
V = 114.0 L T = 291 K
n = ? moles
PV = nRT <----- Ideal Gas Law Equation
(0.720 atm)(114.0 L) = n(0.08206 atm*L/mol*K)(291 K) <----- Insert values
82.08 atm*L = n(23.879 atm*L/mol) <----- Simplify both sides (multiply)
3.44 moles = n <----- Divide both sides by 23.879
(Step 2)
Unbalanced Equation: KClO₃ (s) -----> KCl (s) + O₂ (g)
Reactants: 1 potassium, 1 chlorine, 3 oxygen
Products: 1 potassium, 1 chlorine, 2 oxygen
As you can see, the amount of each type of atom is not identical on both sides of the reaction. To balance the equation, you can add coefficients in front of particular molecules/elements to alter the amount of each atom type.
Balanced Equation: 2 KClO₃ (s) -----> 2 KCl (s) + 3 O₂ (g)
Reactants: 2 potassium, 2 chlorine, 6 oxygen
Products: 2 potassium, 2 chlorine, 6 oxygen
(Step 3 + 4)
Atomic Mass (K): 39.098 g/mol
Atomic Mass (Cl): 35.453 g/mol
Atomic Mass (O): 15.999 g/mol
Molar Mass (KClO₃): 39.098 g/mol + 35.453 g/mol + 3(15.999 g/mol) = 122.548 g/mol
3.44 moles O₂ 2 moles KClO₃ 122.548 g
------------------------ x ------------------------- x ----------------------- = 281 g KClO₃
3 moles O₂ 1 mole KClO₃
A Compound with a empirical formula of C2OH4 and a molar mass of 88 grams permole. What is the molecular formula of this compound? chemistry
To find the molecular formula of a compound with a given empirical formula and molar mass, you can use the following steps:
Determine the molar mass of the empirical formula. The molar mass of a compound is the mass of one mole of the compound, and it is calculated by adding together the atomic weights of all the atoms in the compound. To determine the molar mass of the empirical formula C2OH4, you can add up the atomic weights of carbon (12.01 g/mol), hydrogen (1.01 g/mol), and oxygen (16.00 g/mol): 2 * 12.01 + 4 * 1.01 + 16.00 = 44.03 g/mol.
Divide the molar mass of the compound by the molar mass of the empirical formula. In this case, you can divide the molar mass of the compound (88 g/mol) by the molar mass of the empirical formula (44.03 g/mol): 88 / 44.03 = 1.999. This number is the multiple of the empirical formula that you need to multiply by to get the molecular formula.
Multiply the empirical formula by the multiple determined in step 2 to get the molecular formula. In this case, you can multiply the empirical formula C2OH4 by the multiple 1.999 to get the molecular formula C3.998OH7.996. However, since you cannot have fractional atoms, you need to round this formula to the nearest whole number. Rounding to the nearest whole number gives you C4OH8 as the molecular formula.
Therefore, the molecular formula of the compound with an empirical formula of C2OH4 and a molar mass of 88 g/mol is C4OH8.
It is important to note that the empirical formula only gives you the relative proportions of the atoms in a compound, not the actual number of atoms. The molecular formula, on the other hand, gives you the actual number of atoms of each element in the compound.
Solve an equilibrium problem (using an ICE table) to calculate the pH of each of the following solutions. Ka(HF)=3.5 x 10^-4 a. ) 0.14 M HF b) 0.14 M NaF c) a mixture that is 0.14 M in HF and 0.14 M in NaF
The pH of each of the 0.14 M HF solution is 2.166, and the pH of each of the 0.14 M NaF solution is 8.30. The pH of the combined solution of 0.14 M HF and 0.14 M NaF is 3.45.
a) pH of 0.14 M HF solution is
ICE table
HF + H2O <===> H3O+ + F-
initial 0.14 - -
change -x +x +x
Eq 0.14-x x x
So,
Ka = [H3O+][F-]/[HF]
3.5 x 10^-4 = x^2/0.14-x
x^2 + 3.5 x 10^-4x - 4.9 x 10^-5 = 0
x = [H3O+] = 6.83 x 10^-3 M
pH = -log[H3O+] = 2.166
b) pH of 0.14 M NaF
ICE table
Naf + H2O <===> HF + OH-
initial 0.14 - -
change -x +x +x
Eq 0.14-x x x
So,
Kb = Kw/Ka = [HF][OH-]/NaF]
1 x 10^-14/3.5 x 10^-4 = 2.86 x 10^-11 = x^2/0.14-x
x^2 + 2.86 x 10^-11x - 4 x 10^-12 = 0
x = [OH-] = 2 x 10^-6 M
pOH = -log[OH-] = 5.70
pH = 14 - pOH = 8.30
c) a mixture of equal concentrations of both NaF and HF
pH = pKa
pKa = -log[Ka] = -log(3.5 x 10^-4) = 3.45
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Which of the following statements best describes the process of oxidation? A. Oxidation is a process of gaining one or more electrons.B. Oxidation is the process of losing one or more electrons.C. Oxidation is when a substance catches fire spontaneously.D. Oxidation is the rapid decomposition of organic materials.
Loss of one or more electrons is referred to as oxidation. Reduction is the action of adding electrons to a molecule to enhance its energy.
Does oxidation add electrons or does it lose them?
Reduction is the process of gaining electrons, whereas oxidation is the process of losing electrons. Oxidizing agents are any substances that make other substances lose electrons (become oxidized). A reducing agent, on the other hand, is any molecule that causes another chemical to gain electrons.
What is the scientific name for oxidation?
Oxidation states change. When an oxidation occurs, the oxidation state increases or electrons are lost, but when a reduction occurs, electrons are added or the oxidation state decreases.
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e carbohydrates glucose, galactose, and fructose have the same chemical formula (c6h12o6)(c6h12o6) but different structural formulas, as represented in the figure. which of the following statements about glucose, galactose, and fructose is most likely true? responses the carbohydrates have the same properties because they have the same number of carbon, hydrogen, and oxygen atoms. the carbohydrates have the same properties because they have the same number of carbon, hydrogen, and oxygen atoms. the carbohydrates have the same properties because they each have a single carbon-oxygen double bond. the carbohydrates have the same properties because they each have a single carbon-oxygen double bond. the carbohydrates have different properties because they have different arrangements of carbon, hydrogen, and oxygen atoms. the carbohydrates have different properties because they have different arrangements of carbon, hydrogen, and oxygen atoms. the carbohydrates have different properties because they have different numbers of carbon-carbon bonds.
The response that is true from the above statements are the one stating that the carbohydrates have different properties because they have different arrangements of carbon, hydrogen, and oxygen atoms.
what are structural formulas?
A chemical compound's structural formula provides a visual depiction of the molecular structure (as established by structural chemistry techniques), indicating how the atoms might be organized in actual three-dimensional space. Additionally, either directly or implicitly, the chemical bonding inside the molecule is demonstrated. Structural formulas offer a more thorough geometric depiction of the molecular structure than other forms of chemical formulas,[a] which are only able to use a small number of symbols and have limited descriptive ability.
All three of these monosaccharides—glucose, galactose, and fructose—have the same chemical formula (C6H12O6), but because of the varied arrangements of functional groups around the asymmetric carbon, they differ structurally and chemically (and are referred to as isomers).
Hence the response that is true from the above statements are the one stating that the carbohydrates have different properties because they have different arrangements of carbon, hydrogen, and oxygen atoms.
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Calculate the standard enthalpy of formation for diamonds, given that C(graphite) + O2(g) → CO2(g) A#° --393.5 kJ/mol C(diamond) + O2(g) → CO2(g) AH° =-395.4 kJ/mol | kJ/mol
Standard enthalpy of formation for diamonds is 1.9kJ/mol .
Enthalpy of formation of any compound is defined as the amount of energy required to form 1 mole of compound.Enthalpy of formation is usually represented as ΔHf. If the enthalpy of combustion of two reactions is given, then enthalpy of combustion of the overall reaction can be calculated with the help of Hess's Law.
Given Reactions are:-
C(graphite) + O2(g) → CO2(g) AH°₁= --393.5 kJ/mol C
C(diamond) + O2(g) → CO2(g)
On reversing the second equation:
CO2(g) → C(diamond) + O2(g) => AH° =-395.4 kJ/mol
C(graphite) → C(diamond)
AH°(overall) = AH°₁ + AH° = --393.5 kJ/mol C +-395.4 kJ/mol = 1.9kJ/mol
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Identify reagents that can be used to achieve each of the following transformations. In some cases, more than one answer may be correct. To receive full credit, select all that apply. 1) LIAIH4, 2) H20 Na2Cr207, H2S04, H20 PCC, CH2Cl2 NaBH4, MeOH
The reagents that can be used to achieve of the following transformation is Na2Cr207, H2S04, H20 and PCC, CH2Cl2.
What is chemical reaction?
One or more chemicals, known as reactants, are changed into one or more new substances, known as products, during a chemical reaction. Chemical elements or chemical compounds constitute substances.
In the chemical reaction, 2 butanol is converted to 2 butanone by using oxidizing agent like PCC, ch2cl2 or other reagent is na2cr2o7, h2so4, h2o used this reagent where secondary alcohol is converted to ketone.
Therefore, the reagents that can be used to achieve of the following transformation is Na2Cr207, H2S04, H20 and PCC, CH2Cl2.
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examine the following set of ionization energy values for a certain element. how many valence electrons does an atom of the neutral element possess?
The atom of the element must have about three valence electrons.
What is the ionization energy?We define the ionization energy as the energy that we have to supply to the atom of the element so that the atom can be able to loose electrons. Now if the electrons that we are about to loose is the first electron that is to be lost from the atom then we can talk about the first ionization energy.
In practical terms however, we can be able to loose all of the electrons that are present in the inside of the atom but this is going to take up a lot of energy and this where this question becomes quite important.
If we survey the values of the ionization energy that we have been given, we can see that after the third value of the ionization energy, there is an unprecedented jump in the value of the ionization energy.
The implication of this is that the fourth electron is in an inner shell that requires a much higher energy to be removed from the atom.
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Missing parts;
Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess? Ionization step - Ionization energy (kJ/mol) IE1 - 1012 IE2 - 1903 IE3 - 2912 IE4 - 4956 IE5 - 6273 IE6 - 22233 IE7 - 25997 IE8 - 27575 Express your answer numerically as an integer.
how many mg atoms are found in 1.00 mole of mgo?; how many atoms of nacl are present in 11.0 moles?; how many atoms are in a 591 g sample of gold?
146.35 × 10²³ Mg atoms make up 1 mole of magnesium oxide.
The 11 moles' total amount of sodium chloride is 6.62*10²⁴ NaCl.
The amount of atoms in 591 g of gold is 1.81*10²⁴.
A) Avogadro's number and molecular weight have been used to calculate the number of atoms in a mole of a molecule. The constant that the number provided was the Avogadro number. 6.023 × 10²³.
The following sources provide the relationship between the atoms and the mole:
1 mole = 6.023 × 10²³ atoms.
As a result, the Avogadro number was equal to the number of atoms in 1 mole of magnesium oxide.
Thus, 1 mole of MgO has 6.023 ×10²³ atoms.
The atoms of Mg may be calculated from the mass of one magnesium molecule in the chemical MgO, which is given by:
Mg atoms = Mass of Mg × Avogadro number
Mg atoms = 24.3g × 6.023 × 10²³
Mg atoms = 146.35 × 10²³
146.35× 10²³ Mg atoms make up 1 mole of magnesium oxide.
B) Experimentally, it has been determined that Avogadro's constant is roughly equal to 6.022 × 10²³ mol⁻¹.
Given, the quantity of NaCl in moles= 11.0 mol
The sodium chloride's molar mass= 23 + 35.5 = 58.5 g/mol
NaCl has formula units in a mole.= 6.022 × 10²³
11 moles of NaCl have formula units of NaCl after that. = 11 × 6.022 × 10²³
= 6.62 × 10²⁴ NaCl
11 moles of sodium chloride contain 6.62*10²⁴ formula units of sodium chloride.
C) The premise of Avogadro's hypothesis
According to Avogadro's theory,
1 mole of Gold = 6.02×10²³ atoms
But
1 mole of gold = 197 g
Thus,
197 g of gold = 6.02×10²³ atoms
How to calculate the number of atoms in 591 g of gold
197 g of gold = 6.02×10²³ atoms
Therefore,
591 g of gold = (591 × 6.02×10²³) / 197
591 g of gold = 1.81×10²⁴ atoms
In 591 g of gold, there are 1.81*10²⁴ atoms.
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Which statement(s) is/are TRUE for all chemical reactions?SELECT ALL THAT APPLY a.Reactant elements and/or compounds rearrange to form chemically new products. b Energy is absorbed when bonds are broken There is an overall energy release during all C. Energy is released when bonds are formed.
Whenever one or more compounds undergo a chemical reaction, it's critical to keep in include in fundamental principles:To break bonds, energy is required.Bond formation results in the release of energy.When bonds are created in the products of exothermic processes, more energy is produced than is required to break the links between the reactants.
Why does energy being released when bonds form?Because bonds have stable low-energy arrangements, energy is released as bonds form, bringing the energy level of joining atoms to a regional minimum.
How does the formation of a bond affect energy?The contemporary understanding of chemical processes states that in order for atoms inside the reactants to reassemble into products, bonds between their atoms must be broken.When bonds are broken, energy is absorbed, and when bonds are formed, energy is evolved.
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What are the 5 examples of gas?; What is an example of a gas?; What are 10 examples of a gas?; What is a gas we use everyday?
What is a gas?
Substances that exist in the gaseous phase are called gases. No specific volume may be assigned to gases. When placed in a container, they expand to fill the space. The shape of gases is not well-defined.
Things like oxygen, carbon dioxide, nitrogen, hydrogen, and helium are typical examples of gases. Because the particles in gases are far more dispersed than those in solids or liquids, they are thought to be much less dense.There are numerous additional gases that are necessary for day-to-day living. In addition to oxygen and carbon dioxide, other gases that are utilized frequently include nitrogen, helium, argon, and a few more.Air is the most common type of gas (the air we breathe is a gas). Another way to think of it is as a mixture of various gases, including nitrogen, oxygen, and carbon dioxide. The list below includes some examples of gases.HydrogenNitrogenOxygenCarbon DioxideCarbon MonoxideWater VapourHeliumNeonArgonOzoneTo learn more about gas from the given link.
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Base your answers to questions 77 through 79 on the information below.
A method used by ancient Egyptians to obtain copper metal from copper(I) sulfide ore was heating the ore in the presence of air. Later, copper was mixed with tin to produce a useful alloy called bronze.
77 Calculate the density of a 129.5-gram sample of bronze that has a volume of 14.8 cubic centimeters. Your response must include a correct numerical setup and the calculated result
The density of a 129.5-gram sample of bronze that has a volume of 14.8 cubic centimeters 8.75 g/cm³.
the data is given as follows :
mass of sample of bronze = 129.5 g
the volume of the sample is = 14.8 cm³
The density formula is given as :
Density = mass / volume
Density = 129.5 g / 14.8 cm³
Density = 8.75 g/cm³
Thus, A method used by ancient Egyptians to obtain copper metal from copper(I) sulfide ore was heating the ore in the presence of air. Later, copper was mixed with tin to produce a useful alloy called bronze. the density of the bronze sample is 8.75 g/cm³.
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Which statement comparing ionic and covalent bonds is correct ?
The correct answer is covalent bonds tend to be less polar than ionic bonds.
How ionic bonds are different than the covalent bond?
When two atoms share a pair of electrons in a bond, covalent bonds are created.
An electron transfer from one atom to another occurs in ionic bonds. In contrast to conventional compounds, ionic compounds are held together by an ion pair's electrostatic contact.
The degree of bond polarity is determined by the differences in electronegativity between the atoms. Ionic bonds have atoms with significantly different electronegativities than covalent compounds do. Ionic bonds are hence far more polar than covalent ones.
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according to the bronsted-lowry definitions of acids and bases, a acid is a substance that .
According to the bronsted-lowry definitions of acids and bases, a acid is a substance that when a basic substance gains a proton, it forms an acid called the conjugate acid of a base.
According to the Bronsted-Lowry scheme a substance can function as an acid only in the presence of a base; similarly, a substance can function as a base only in the presence of an acid. Furthermore, when an acidic substance loses a proton, it forms a base, called the conjugate base of an acid, and when a basic substance gains a proton, it forms an acid called the conjugate acid of a base. Thus, the reaction between an acidic substance, such as hydrochloric acid, and a basic substance, such as ammonia, may be represented by the equation:
HCL + [tex]NH_{3}[/tex] ⇔ [tex]NH_{4}^{+} + Cl^{-}[/tex]
In the equation the ammonium ion (NH⁺4 ) is the acid conjugate to the base ammonia, and the chloride ion (Cl-) is the base conjugate to hydrochloric acid.
Bronsted-Lowry theory, also called proton theory of acids and bases, a theory, introduced independently in 1923 by the chemist Johannes Nicolaus Bronsted and the English chemist Thomas Martin Lowry, stating that any compound that can transfer a proton to any other compound is an acid, and the compound that accepts the proton is a base. A proton is a nuclear particle with a unit positive electrical charge; it is represented by the symbol H+ because it constitutes the nucleus of a hydrogen atom.
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What does the pH of a solution measure?; How do you determine the pH of water?; What does the pH of a solution measure a volume B Color C temperature D acidity?; What is the pH concentration of water?
pH of a solution measures the acidity of a solution. pH of water can be determined with the help of pH meter or litmus paper. Pure water has a pH of 7.
In chemistry, the pH scale is used to define the acidity or basicity of an aqueous solution. Historically, pH stood for "potential of hydrogen." The pH values of acidic solutions are typically lower than those of basic or alkaline solutions.
Equipment called a pH meter detects the activity of hydrogen ions in solutions or the acidity or alkalinity of a solution.
A combination of several colors taken from lichens and made water-soluble is known as litmus. One of the earliest kinds of pH indicators, used to assess the acidity of materials, is frequently produced by its absorption onto filter paper.
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Dinitrogen tetroxide in its liquid state was used as one of the fuels on the lunar lander for theNASA Apollo missions. In the gas phase it decomposes to gaseous nitrogen dioxide:N2O4(g) ↔ 2NO2(g)Consider an experiment in which gaseous N2O4 was placed in a flask and allowed to reachequilibrium at a temperature where Kp = 0.133. At equilibrium, the pressure of N2O4 wasfound to be 2.71 atm. Calculate the equilibrium pressure of NO2(g).
Equilibrium pressure of NO2 (g) is 0.3604. This is calculated from the expression of equilibrium constant.
Dinitrogen tetroxide in its liquid state was used as one of the fuels on the lunar lander. Decomposition of gaseous nitrogen dioxide ,
N2O+ (g) ---> 2NO2 (g)
chemical equilibrium is the state in which both the reactants and products are present in concentrations which have no further tendency to change with time. For this equilibrium reaction, equilibrium constant can be represented as
K(eq.) = concentration of product / concentration of reactant
In gaseous phase we consider the presence of the molecule ,
Kp = [NO2] / [N2O4]
where, Kp = equilibrium constant that equals to 0.133
[N2O4] = Presence of N2O4 at equilibrium that equals to 2.71.
Putting the values in the expression of equilibrium constant,
0.133 = [NO2]2 / 2.71
[NO2]2 = 0.133 * 2.71
= 0.3604
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an nmr spectrum of the r-carvone reactant (not the product) is provided for you on blackboard. assign the peaks to specific carbon atoms using the letters on the structure. carbons that you are not expected to be able to differentiate are listed together.
The peaks to specific carbon for the nmr spectrum of the r-carvone reactant are:
Carbons a and j: 15.65 and 20.46ppm
Carbons b and i: 42.41ppm
Carbon c: 144.64ppm
Carbon e: 199.57ppm
Carbons d and f: 110.43pppm
Carbon g: 31.18
Carbon h: 132.27ppm
What is ccarbon?
Carbon is the 15th most plentiful element inside the Earth's crust, and the fourth most abundant element inside the universe via mass after hydrogen, helium, and oxygen. Carbon's abundance, its particular diversity of organic compounds, and its unusual capability to form polymers at the temperatures usually encountered in the world, enables this detail to serve as a common element of all regarded lifestyles. It is the second one most considerable element in the human body via mass (approximately 18.5%) after oxygen.To know more about carbon, click the link given below:
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What amino acid sequence will be generated, based on the following mRNA codon sequence? 5′–AUG–UCU–UCG–UUA–UCC–UUG–3′A Met-Arg-Glu-Arg-Glu-Arg.B Met-Glu-Arg-Arg-Glu-Leu.C Met-Ser-Leu-Ser-Leu-Ser.D Met-Ser-Ser-Leu-Ser-Leu.
Met-Ser-Ser-Leu-Ser-Leu amino acid sequence will be generated, based on 5' AUG-UCU-UCG-UUA-UCC-UUG 3' mRNA codon sequence.
mRNA have triplet codons and each triplet codon codes for an amino acid. An amino acid can be coded by many triplet codons but one amino acid can only code for a single amino acid.
AUG is a start codon that codes for initiator amino acid called methionine. Serine can be coded by UCU, UCC, UCA, UGC, AGU, AGC triplet codon. leucine can be coded by UUA, UUG, CUU, CUC, CUA, CUG.
So the codon sequence 5' AUG-UCU-UCG-UUA-UCC-UUG 3' will generate Met-Ser-Ser-Leu-Ser-Leu amino acid sequence.
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HPLC columns that employ a liquid stationary phase, such as octadecyl (C18), covalently bound to a silica support material must be operated within a specific pH range. Which of the following pH ranges will allow a HPLC column with a stationary phase covalently bonded to an unmodified silica support to operate optimally? HPLC columns that employ a liquid stationary phase, such as octadecyl (C18), covalently bound to a silica support material must be operated within a specific pH range. Which of the following pH ranges will allow a HPLC column with a stationary phase covalently bonded to an unmodified silica support to operate optimally? □ 2.9-4.5 □ 1.0-4.0 □ 10.5-13.0 □ 85-10.0 3.06.5
HPLC columns that use a liquid stationary phase, including such octadecyl (C18), covalently attached to a silica support material, and anything else that falls within that pH range must be operated within a
What is the pH's typical range?The human body makes numerous physiological adjustments to maintain homeostasis. One of them is preserving a proper acid-base balance. The pH of a healthy person's body ranges from 7.35 to 7.45, with an average of 7.40, when there are no pathological conditions present.
What is pH's complete form?What is pH's complete form? "Potential of Hydrogen" is the full name of pH. pH is referred to as the nernst equation of the concentration of H+ ions. So, the definition of pH is "the strength of hydrogen" or "the power of hydrogen."
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John wanted to demonstrate his understanding of molality after his chemistry class. He placed some cubes of sugar(sucrose) weighing 110g into 462g of water. What would be his calculated molality(m) to 2 significant figures? Sucrose(molar mass= 342g/mol).
The molality of the solution, given that 110 g of sucrose is dissolved in 462 g of water is 0.70 M
How do I determine the molality?First we shall determine the mole of the sucrose in the solution. This is illustrated below:
Mass of sucrose = 110 gMolar mass of sucrose = 342 g/molMole of sucrose =?Mole = mass / molar mass
Mole of sucrose = 110 / 342
Mole of sucrose = 0.322 mole
Finally, we shall determine the molality of the solution. This is shown below:
Mole of sucrose = 0.322 moleMass of water = 462 g = 462 / 1000 = 0.462 KgMolality of solution = ?Molality = mole / mass of water (in Kg)
Molality of solution = 0.322 / 0.462
Molality of solution = 0.70 M
Thus, the molality of the solution is 0.70 M
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What Is a Homogeneous Mixture? Definition and Examples
A homogeneous mixture is one that has a consistent chemical make-up. Homogeneous mixtures have only one phase, according to their definition, composition, and characteristics.
Examples. A combination with a uniform composition is said to be homogenous. Because the particles are distributed evenly, these mixtures have a consistent composition. There is only one phase to them. They are made up of molecular or atomic level ingredients and do not divide into layers. In colloquial words, homogeneous mixes are frequently referred to as solutions. The example that follows is one of the simplest. dissolve sugar in water. A homogenous mixture is a combination of ingredients combined so thoroughly that the separate ingredients are invisible. There will be the identical amounts of each ingredient in every sample of the mixture. Mixtures that are homogeneous can be solid, liquid, or gaseous.
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What are some examples of gas matter in your home?
Here some examples of gas matter in my home :
Heating and cooling air.Providing gas for ranges (stoves and ovens)Fireplaces.Laundry dryers.Barbeque grills and fire pitsWhat Is Natural Gas?Under the surface of the earth, there is a source of energy called natural gas. Despite the fact that natural gas is made up of a variety of different compounds, methane (CH4), which has one carbon atom and four hydrogen atoms around it, is one of its main constituents. Natural gas has no flavor, color, or smell; what we associate with it as having is a commercial additive used to alert people to gas leaks.Natural gas comprises both hydrocarbon and non-hydrocarbon components in addition to methane. Any substance that contains both carbon and hydrogen is referred to as a hydrocarbon, and fuel sources like petroleum and natural gas frequently contain these compounds.Hydrocarbon gas liquids (HGLs) including propane, butane, and ethane are found in natural gas.Learn more about Natural Gas refer to :
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A cyclotron is used to accelerate electrons. Electrons are released from rest near the center of the cyclotron. The amplitude of the voltage across the gap in the cyclotron is 20 V. The magnetic field in the cyclotron is 0.5 T. The cyclotron accelerates the electrons to a speed of 5 * 10^7 m/s. Find the cyclotron frequency. What is the radius of the largest semicircle that the electron traces out before exiting the cyclotron What is the kinetic energy of the electron when it exits the cyclotron How many semicircles does the electron trace out before exiting the cyclotron
To accelerate electrons, a cyclotron is ineffective. The electron's mass is very small, which causes a sharp increase in its speed. Similar to how the electrons drift away from the oscillating electric field due to rapid relativistic variation in their mass.
Positive ions are accelerated by cyclotrons, which are machines. Velocity is a factor in cyclotron frequency. Since electrons have such a small mass, they cannot be accelerated by a cyclotron. Because of this, the electron will be thrown out of step with the oscillating field because the velocity will be increased to such a high degree.
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which of the following will affect the vapor pressure of a pure molecular substance? select all that apply.
The amount of intermolecular forces, the structure of the material, and the temperature all affect how much vapour a pure chemical substance produces.
Which situations include intermolecular forces?Intermolecular forces operate between molecules. Intermolecular forces are less powerful than intramolecular forces. Van der Waals forces, ion-dipole communication, dipole-dipole contact, and weaker intermolecular forces are a few examples of intermolecular forces.
Why do intermolecular forces exist?Molecules interact with one another to form electrostatic forces, which are interactions of positive and negative charges. Similar to how molecules are kept together by covalent bonds, forces between molecules are made up of both attractive and repelling constituents.
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in which of the following molecules can you confidently predict the bond angles about the central atom, and for which would you be a bit uncertain?
The following compounds have a structure that is somewhat ambiguous, but you can estimate the bond angles around the core atom with confidence.
Which atom is the main one?The center atom in a molecular formula is often the element with lowest symbol and the largest bonding potential. The least electronegative element is normally the central atom when all the atoms typically make the same number of bonds.
What three types of atoms are there?Protons, electrons, and neutrons are the three basic types of particles that make up an atom. Protons and neutrons roughly share the same mass, however the mass of an electron is quite small. An antiproton has no charge, a neutron carries a positive charge.
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Determine the order in which each process occurs in protein synthesis. Rank the items from the process that occurs first to the process that occurs last. To rank items as equivalent, overlap them.
Protein synthesis is defined as the process in which cells make proteins. Synthesis of protein occurs in two stages: transcription and translation. Transcription is defined as the transfer of genetic instructions in DNA to mRNA in the nucleus. It occurs by following three steps: initiation, elongation, and termination.
The order of events in protein synthesis (from first to last) is given as follows:
DNA containing specific gene unravels: DNA is unwound at the specific gene due to binding of transcription factors present in promotor region of the gene. It is the initiator of the transcription.mRNA is synthesized: After initiation and promotor clearance, the process of transcription enters the elongation phase synthesizing the complete mRNA.mRNA combines with ribosomes: A mature mRNA combines associates with ribosome which is the site of protein synthesis. Binding of mRNA to ribosomes initiates the process of translation.Amino acids are bonded together by the mRNA codons are read on ribosomes and tRNA carries the specific amino acid to A-site of ribosome where peptide bond is formed between the two amino acids. The process continues till whole mRNA is translated to produce a protein.Learn more about protein synthesis from the link given below.
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