Then 74.8 % is the percentage yield of the reaction.
What is percentage yield?The percentage yield indicates the amount of product received in relation to the maximum feasible mass. The percentage of atoms in reactants that create the intended product is given by the atom economy of a reaction.
In industrial chemistry, the percentage yield of a chemical process is an essential factor. It is possible to compute the yield (amount) of product obtained vs what might have been achieved in theory if all of the reactants were converted without loss or waste.
Given reaction:
2Mg(s)+O₂(g) → 2MgO(s)
42.5 gm of Mg = 42.5 / (24 g/mol)
= 1.77 mol
33.8 gm of O₂ = 33.8 gm / (32 g/mol)
= 1.06 mol
1.06 moles of O₂ will require (2 × 1.06) = 2.12 moles of Mg
But we have 1.77 moles of Mg, so here Mg is limiting reagent.
1.77 moles of Mg reacts with (1.77/2) = 0.89 moles of O₂ and forms 1.77 moles of MgO
Thus, theoretical yield of mass = 1.77 moles × (40 gm/mol)
= 70.8 gm
Actual yield = 52.7 gm of MgO.
So, Percentage yield = (Actual yield / theoretical yield) × 100
= (52.7 gm /70.8 gm) × 100
= 74.8 %
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The complete question is as follows:
Consider the reaction 2Mg(s) + O2(g) → 2MgO(s). 42.5 g of Mg reacts with 33.8 g of O₂. If 52.7 g of MgO is obtained, then what is the percent yield of the reaction? 54,0% 62.3% 0 67.1% 74.8%
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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The interaction of the side chains on the amino acids, for example hydrophobic attractions, is the ________ structure of a protein.
Polar amino acids are capable of forming hydrogen bonds, and charged amino acid side chains are able to form ionic bonds. Weak van der Waals interactions are used to connect hydrophobic side chains to one another. The majority of the bonds that these side chains create are non-covalent.
The interactions between hydrophobes and water are referred to as hydrophobic interactions. Nonpolar molecules known as hydrophobes typically have a long chain of carbons and do not interact with water molecules. A good illustration of this particular interaction is when fat and water are combined.
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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
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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Midterm Review Unit 3 & 4: Atomic Structure & Periodic Table
Atomic Structure & Periodic Table:
Mass of the nucleusEquals to the protons and neutronsUnits are AMUNot on the periodic tableHydrogen consists of positively charged protons and negatively charged electrons orbiting the nucleus. You can also find atomic structures in the periodic table of elements. Atomic structure is the arrangement of subatomic particles within an atom. An atom is the smallest unit of ordinary matter within an element.
Atoms contain three types of subatomic particles protons neutrons and electrons. Discovery of elementary particles. Atomic structure refers to the structure of an atom, including a nucleus in which protons and neutrons reside. Negatively charged particles called electrons rotate around the center of the nucleus.
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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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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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In which substance are the electrostatic forces between molecules the strongest?(1 point)acetonepropaneturpentineglycerin
In glycerin the electrostatic forces between the molecules are stronger.
What are electrostatic forces between molecules?They are commonly called intermolecular forces and represent the set of attractive and repulsive forces that occur between the molecules of matter due to polarity, that is, the presence and distribution of their electrons.
The strength of intermolecular forcesOrganic substances are mostly molecular compounds with predominantly covalent bonds. They have van der Waals intermolecular bonds that are quite weak forces that cause their melting temperatures to be low.
In the case of propane, the electrostatic forces between its molecules are very weak, which is why it is a gas under normal conditions and has a melting point of -188 °C.Acetone is a compound that also has slight intermolecular forces and, although liquid, evaporates easily, its melting point being -95 °C.Turpentine is a polyalcohol with a carbon chain with three carbon atoms and three hydroxyl groups with somewhat greater intermolecular forces that allow it to be liquid at room temperature and a melting point of -50 to -60 ºC.Glycerin as a mixture of paraffinic, olefinic, cycloparaffinic and aromatic hydrocarbons has a much higher melting temperature (20 °C) than the aforementioned compounds.Learn more about electrostatic forces at https://brainly.com/question/9774180
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The empirical formula of a compound is NO_2. Its molar mass is 92 g/mol. What is its molecular formula?
The molecular formula of the compound whose empirical formula is NO₂ is N₂O₄.
The relation between molecular formula and empirical formula is mentioned as follows:
molecular formula = empirical formula × n ......equation 1
where, n is number of building blocks needed to build the molecular formula.
Molar mass of NO₂ = Molar mass of molecular formula = 92 g/mol
Molar mass of one building block = the molar mass of the empirical formula = (1 × 14.0067 g/mol) + (2 × 15.9994 g/mol) = 46.0055 g/mol
Substitute value of molar mass of molecular formula and molar mass of the empirical formula in equation1,
92 = 46.0055 × n
n = 2
Using equation 1 , we get
Molecular Formula = NO₂ × 2
Molecular Formula = N₂O₄
The molecular formula is N₂O₄.
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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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using average bond enthalpies (linked above), estimate the enthalpy change for the following reaction: 2hbr(g) cl2(g)2hcl(g) br2(g) kj
The enthalpy changes occurrence is 53.35 kJ.
What is enthalpy?
Enthalpy is a property or state function that is similar to energy; it has dimensions similar to energy (and is thus measured in units of joules or ergs), and its value is solely dependent on the temperature, pressure, and composition of the system, rather than on its history.
What is bond?
In molecules, atoms are joined by chemical bonds. Atomic nuclei with positive charges interact with electrons with negative charges to form bonds (the positions of which in space are determined by quantum mechanics)
1 mole of steam = 18.00g H2O
There are five stages to this problem
a] cooling steam from 140.0C to 100C
b] latent heat [heat of vaporisation] in turning steam at 100C to water at 100C
c] cooling water at 100C to 0C
d] using latent heat of fusion to turn water at 0C to ice at 0C
e] cooling ice from 0C to -55C
you just add up each stage
eg stage 1 is M x C x temp difference = 18 x 2.01 x (140-100) Joules
Unfortunately the data heat capacity of water, ltent heat vaporisation and latent heat fusion are not given, and it is impossible to do this without that data.
you just add up each stage
eg stage 1 is M x C x temp difference = 18 x 2.01 x (140-100) Joules
1 mole of steam = 18.00g H2O
18 x 2.01x(140-100) + 2260x18 + 2x100x18 + 334x18 + 2 x 45x18
= 53.35 kJ
Therefore, the enthalpy changes occurrence is 53.35 kJ.
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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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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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Which is the balanced equation for V2O5 + CaS → CaO + V2S5?
V2O5 + CaS → CaO + V2S5
5V2O5 + 5CaS → 10CaO + 5V2S5
3V2O5 + 3CaS → 3CaO + 3V2S5
V2O5 + 5CaS → 5CaO + V2S
To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. Therefore, the correct option is option D.
What is Balanced equation?Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, displacement reaction.
The other characteristic of balanced reaction is that physical state should be written with each compound or molecule on reactant and product side. Physical state should be written in brackets. s means solid, l means liquid, g means gas.
The balanced equation for V[tex]_2[/tex]O[tex]_5[/tex] + CaS → CaO + V[tex]_2[/tex]S[tex]_5[/tex] is
V[tex]_2[/tex]O[tex]_5[/tex] + 5CaS → 5CaO + V[tex]_2[/tex]S[tex]_5[/tex]
Therefore, the correct option is option D.
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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.
Which of the following is the correctly balanced equation for the complete neutralization of H3PO4 by Ca(OH)2?
H3PO4 + Ca(OH)2 â CaHPO4 + 2H2O
2H3PO4 + 3Ca(OH)2 â Ca3(PO4)2 + 6H2O
H3PO4 + Ca(OH)2 â Ca3(PO4)2 + H2O
3H3PO4 + Ca(OH)2 â Ca3(PO4)2 + 5H2O
4H3PO4 + 6Ca(OH)2 â 2Ca3(PO4)2 + 12H2O
2H3PO4 + 3Ca(OH)2 â Ca3(PO4)2 + 6H2O is the correct answer.
When a robust acid reacts with a robust base the consequent salt is neither acidic nor primary in nature i.e. it is neutral. for instance while HCl (Hydrochloric acid), a strong acid, reacts with NaOH, a robust base, the resulting salt is sodium chloride and water.
To neutralize acids, a vulnerable base is used. Bases have a bitter or astringent taste and a pH more than 7. Bases are neutralized with the aid of the use of a susceptible acid.
Including a base decreases the attention of H3O+ ions within the solution. If a base is brought to an acidic solution, the solution will become much less acidic and movements in the direction of the middle of the pH scale.
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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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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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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 the conjugate acid/base pairs present in an aqueous solution of hydrogen sulfate ion,hso4-.3)a)hso4-/so42- and h3o /h2ob)h2so4/hso4- and h2o/oh-c)hso4-/h2o and h2so4/oh-d)hso4-/h2o and h3o /so42-
The conjugate acid/base pairs present in an aqueous solution of hydrogen sulfate is a) HSO₄⁻ / SO₄²⁻ and H₃O⁺ / H₂O
The acids have their conjugate base and the bases have their conjugate acid. the reaction is given as :
HSO₄⁻ + H₂O -------> SO₄²⁻ + H₃O⁺
acid base conjugate conjugate
base acid
In the above reaction the acid will converted in to its conjugate base and the base will converted in to the conjugate acid. The conjugate acid / base pair are the substances that are differ only by the the one proton only. when the proton is added to a base the conjugated acid is formed.
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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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What's the best black powder to use in a muzzleloader?; Is Pyrodex better than black powder?; What ammunition is used in muzzleloaders?; Is black powder the same as a muzzle loader?
a) The only powder to be used in a muzzleloader is Black powder but some synthetic substitutes such as Prodex can be used too. When using substitute posder in a muzzleloader, you have to be sure that the substitute is approved to avoid injuries.
Cast from lead, the below ammunition is used in muzzleloaders:
round ballbulletshotB) The muzzle loader is a type of black powder gun and cannot be said to be same as black powder but uses black powder as a projectile. There are three types of muzzle loader guns which are:
FlintlocksCaplocksInline MuzzleloadersC) Muzzle loaders are guns that push a projectile trough the muzzle, usually powder, to load.
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a student performs a gravimetric analysis experiment and is given 1.94 g 1.94 g of a contaminated mixture containing anhydrous magnesium chloride and potassium nitrate. to determine the percentage by mass of magnesium chloride in the mixture, excess silver nitrate is added to the mixture to precipitate the chloride ion as silver chloride. the mass of the silver chloride precipitate is found to be 1.43 g 1.43 g. which of the following is the mass percent of magnesium chloride in this sample?
a.25%
b.24%
c. 47%
d. 74%
The only material that will precipitate is silver nitrate. Silver chloride will precipitate as a result of the reaction between magnesium chloride and silver nitrate. 1.94 g 1.94 g of a contaminated combination including anhydrous potassium magnesium chloride and magnesium chloride is supplied to the subject of a gravimetric analysis experiment.
What is anhydrous magnesium?
The student uses extra AgNO3(aq) to precipitate the chloride ion as AgCl to determine the mixture's proportion by mass of MgCl2 (s). To ascertain the sodium chloride content, a gravimetric study is conducted. The ratio of magnesium chloride to silver nitrate is 1:2, meaning that a mineral water should use a minimum of two moles of silver nitrate while precipitating the chloride ions as silver chloride. Using gravimetric analysis, a student wants to ascertain the percentage of mass.
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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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The two ions K+ and Ca?+ each have 18 electrons surrounding the nucleus. Which would you expect to have the smaller radius? Why?
Answer:
Ca+
Explanation:
Ca+ because it has 20 protons to pull the nucleus in where K+ only has 19 protons.
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.
When aqueous solutions of Pb(NO3)2(aq) and KI(aq) are mixed, the products are KNO3(aq) and PbI2(s). What is the net ionic equation for this reaction?Pb(NO3)2(aq)+2KI(aq)⟶PbI2(s)+2KNO3(aq)Pb2+(aq)+2NO−3(aq)+2K+(aq)+2I−(aq)⟶PbI2(s)+2K+(aq)+2NO−3(aq)Pb2+(aq)+2I−(aq)⟶PbI2(s)2K+(aq)+2NO−3(aq)⟶2KNO3(s)
The net ionic equation for the reaction that occurs when solutions of lead(II) nitrate[Pb(NO3)2 ] and potassium iodide(2KI) are combined is:
Pb²⁺(aq) + 2 I⁻(aq) ⇒ PbI₂(s)
The balanced Molecular equation for the reaction of lead nitrate [Pb(NO3)2 ]and Potassium iodide(2KI) is given as ;
Pb(NO3)2 (l) + 2KI (s) → PbI2 (s) + 2KNO3 (l).
Solutions of lead(II) nitrate and potassium iodide were combined and formed double displacement reaction. The complete ionic equation is:
Pb²⁺(aq) + 2 NO₃⁻(aq) + 2 K⁺(aq) + 2 I⁻(aq) ⇒ 2 K⁺(aq) + 2 NO₃⁻(aq) + PbI₂(s)
Removing Spectator ions, that appear both in the reactants and in the products. They do not participate in the reaction thats why they do not appear in the net ionic equation.So, The net ionic equation is:
Pb²⁺(aq) + 2 I⁻(aq) ⇒ PbI₂(s)
The net ionic equation for the reaction of lead(II) nitrate[Pb(NO3)2 ] and potassium iodide(2KI) solution is combined:
Pb²⁺(aq) + 2 I⁻(aq) ⇒ PbI₂(s)
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Identify the Molecular Geometry (Molecular Domain Geometry, MDG) for NH3 O trigonal pyramidal O trigonal planar O tetrahedral O bent O linear
Answer: Trigonal Pyramidal
Explanation: So, firstly we should eliminate the answers that don't work. It can't be linear since there are 4 atoms. We can assume that it can't be linear since those tend to be the geometry of compounds with few atoms.
So we are left with trigonal pyramidal, trigonal planar, and tetrahedral. To help us out, we should attempt to draw the MDG.
Firstly, we have to find the center atom. We must find the most electronegative atom, Hydrogen or Nitrogen. A simple way to find the most electronegative atom is to start at the bottom left of the Periodic Table and go diagonally to the top right. Therefore, Nitrogen would be the most electronegative. So we know that Nitrogen is the center atom.
Since Hydrogen only needs two atoms to have a full octet, they will only create a singular bond. Therefore we can determine that all the Hydrogens will pair with the Nitrogen. Looking at the numbers above the periodic table, the Hydrogens will contribute with one atom each. And the Nitrogen will contribute with 5 atoms. Therefore we have 8 atoms in total. So we can do the following diagram.
H
I
H -- N -- H
But the problem with this diagram is that there are 6 atoms used in total since the dashes do 2 atoms. The Nitrogen also does not have a full octet. Therefore we must put two atoms on the bottom of Nitrogen. This leads to the only possible answer, Trigonal Pyramidal.
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.
