Answers
The usage of a catalyst lessens the activation energy, allowing the reaction to take place at a smaller temperature. Without the use of this structure, a greater operational temperature would be necessary due to the higher activation energy required for it to converge.
(a) Oxidation requires the subtraction of electrons from specific types.
(b) An augment in pressure would move the equilibrium towards the section having lesser amount of gases which happens to be the product side in the situation, thus resulting in an enhancement of the yield of nitrogen monoxide.
How to explain the information(a) According to Le Châtelier's principle, if a framework that is already in balance faces a transform in circumstances, then the network will answer with a displacement of its equalization setting, trying to offset the consequence of the alteration.
(b) (i) An increment of pressure would lead to a transfer of the balance point towards the segment with fewer hydrogen molecules i.e. the product class; thereby escalating the outcome of hydrogen. (ii) The concentration of steam being increased causes the shift to happen towards the reactant portion because it holds a smaller number of gas moles, reducing the output of hydrogen.
(c) Two main explanations why temperatures more significant than 1200K are neglected are: (i) reactivity accelerates substantially whenever there is a rise beyond 1200K, but this shift of equilibrium to the reactant part lowers the spectrum of hydrogen; and (ii) the fees of preserving such high heats are too noteworthy.
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Related Questions
At a certain temperature, 0.5011 mol of N2 and 1.761 mol of H2 are placed in a 4.00 L container.
N2(g)+3H2(g)↽−−⇀2NH3(g)
At equilibrium, 0.0300 M of N2N2 is present. Calculate the equilibrium constant, Kc
Answers
The equilibrium constant, Kc for the given reaction is 0.106.
We have to find the equilibrium constant, Kc for the following chemical equation:
N2(g) + 3H2(g) ⇌ 2NH3(g)
At a certain temperature, 0.5011 mol of N2 and 1.761 mol of H2 are placed in a 4.00 L container. At equilibrium, 0.0300 M of N2 is present. We are supposed to calculate the equilibrium constant, Kc.
Therefore, let's first write the equation for the reaction of the given concentration of N2.
0.0300 M of N2N2(g) + 3H2(g) ⇌ 2NH3(g)
Initial: 0.5011 mol 1.761 mol 0
Change: -0.0300 mol (-3 × 0.0300) mol (+2 × 0.0300) mol
Equilibrium: 0.4711 mol 1.671 mol 0.0600 mol
The equilibrium concentrations of all species are known.
Therefore, we can calculate the equilibrium constant, Kc.
The expression for Kc is as follows:
Kc = ([NH3]^2 / [N2][H2]^3)
Kc = (0.0600 M)^2 / [(0.4711 M) × (1.671 M)^3]
Kc = 0.106
Answer: The equilibrium constant, Kc for the given reaction is 0.106.
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In an effort to sanitize his water, Beethoven knows that bromine can be used to purify water. If Beethoven has 2.12 x 1022 formula units of aluminum bromide are reacted with excess chlorine gas, how many milliliters of liquid bromine (density = 3.12 g/mL) are formed?
Answers
Answer:
2.7 mL
Explanation:
The equation of the reaction is;
2AlBr3 + 3Cl2 -----> 2AlCl3 + 3Br2
Number of moles in 2.12 x 1022 formula units of aluminum bromide
1 mole of AlBr3 = 6.02 * 10^23 formula units
x moles = 2.12 x 1022 formula units
x = 2.12 x 1022 formula units * 1 mole/ 6.02 * 10^23 formula units
x = 0.0352 moles of AlBr3
According to the reaction equation;
2 moles of AlBr3 produces 3 moles of Br2
0.0352 moles of AlBr3 produces 0.0352 moles * 3 moles /2 moles
= 0.0528 moles of Br2
Mass of Br2 produced = 0.0528 moles of Br2 * 159.808 g/mol
Mass of Br2 produced = 8.44g
But density = mass/volume
volume = mass/density
volume of Br2 = 8.44 g/ 3.12 g/mL
volume of Br2 = 2.7 mL
how much electrons are present in MnO4-
Answers
What types of energy does the Sun transmit to Earth?
Answers
Answer:
how many colors are there
you have 100.0ml of 3.0M solution of ammonium hydroxide and 30.0g of potassium aluminum sulfate
a. What is the limiting reactant
b. What is the theoretical yield of aluminum hydroxide
C. could you collect above in a filter paper
Please show work/explain why
Answers
The limiting reactant is potassium aluminum sulfate.
To determine the limiting reactant, we need to compare the amount of each reactant to the stoichiometry of the balanced chemical equation. The balanced equation for the reaction between ammonium hydroxide (NH4OH) and potassium aluminum sulfate (KAl(SO4)2) is:
2 NH4OH + KAl(SO4)2 -> Al(OH)3 + (NH4)2SO4 + K2SO4
From the equation, we can see that the stoichiometric ratio between ammonium hydroxide and potassium aluminum sulfate is 2:1. Therefore, we need twice as many moles of ammonium hydroxide as potassium aluminum sulfate.
To calculate the moles of each reactant, we use the formula:
moles = concentration (M) × volume (L)
For the ammonium hydroxide:
moles of NH4OH = 3.0 M × 0.100 L = 0.300 mol
For the potassium aluminum sulfate:
moles of KAl(SO4)2 = mass (g) / molar mass (g/mol)
moles of KAl(SO4)2 = 30.0 g / (39.1 g/mol + 26.98 g/mol + 2(32.1 g/mol) + 4(16.0 g/mol)) = 0.083 mol
Since the stoichiometric ratio is 2:1, the moles of ammonium hydroxide are in excess.
To determine the theoretical yield of aluminum hydroxide (Al(OH)3), we need to convert the moles of the limiting reactant (potassium aluminum sulfate) to moles of the product using the stoichiometry of the balanced equation. From the balanced equation, we can see that the stoichiometric ratio between potassium aluminum sulfate and aluminum hydroxide is 1:1.The moles of aluminum hydroxide produced will be the same as the moles of potassium aluminum sulfate used, which is 0.083 mol.
To calculate the theoretical yield in grams, we use the formula:
mass = moles × molar mass
The molar mass of aluminum hydroxide (Al(OH)3) is (26.98 g/mol + 3(16.0 g/mol)) = 78.0 g/mol.
The theoretical yield of aluminum hydroxide is:
mass = 0.083 mol × 78.0 g/mol = 6.474 g
Therefore, the theoretical yield of aluminum hydroxide is 6.474 grams.
Aluminum hydroxide is a precipitate, which means it forms solid particles when the reaction occurs. It can be collected on a filter paper using a filtration process. Filtration is a common method to separate solids from liquids. The reaction mixture can be poured through a filter paper funnel, and the solid aluminum hydroxide particles will be trapped on the filter paper while the liquid and soluble salts (such as ammonium sulfate and potassium sulfate) pass through.However, it's important to note that the success of the filtration process depends on the particle size and the nature of the solid precipitate. If the particles of aluminum hydroxide are too fine or colloidal in nature, they may pass through the filter paper and affect the efficiency of the filtration. In such cases, additional techniques like centrifugation or using a finer filter may be required to achieve better separation.
Overall, collecting aluminum hydroxide on a filter paper is a feasible method in this scenario, provided the precipitate is of the appropriate size and nature for filtration.
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which type of reaction this would be: 2KNO₃+ H₂CO₃ → K₂CO₃ + HNO₃
Answers
Answer:
It's a double displacement reaction.
draw one possible dipeptide that is formed between alanine and leucine, as the zwitterion.
Answers
To form a dipeptide between Alanine and Leucine, we have to join the carboxyl group (COOH) of Alanine with the amino group (NH₂) of Leucine via a peptide bond. The resulting molecule will have a zwitterionic form. The zwitterionic form of the dipeptide will have both a positive and a negative charge.
A dipeptide is a molecule made up of two amino acid residues joined together via a peptide bond. A peptide bond is a bond between the amino group (NH₂) of one amino acid and the carboxyl group (COOH) of another amino acid. Amino acids are the building blocks of proteins. Alanine and Leucine are two of the twenty common amino acids found in nature.
A zwitterion is a molecule that has a positive charge on one part of the molecule and a negative charge on another part of the molecule. Zwitterions are electrically neutral overall. They are formed when a molecule that has both acidic and basic functional groups is dissolved in a solvent. The acidic and basic groups react with each other to form a neutral molecule that has both positive and negative charges. The zwitterionic form of an amino acid is the form that is found in proteins.
The chemical formula for Alanine is C₃H₇NO₂, and the chemical formula for Leucine is C₆H₁₃NO₂. To form a dipeptide between Alanine and Leucine, we have to join the carboxyl group (COOH) of Alanine with the amino group (NH₂) of Leucine via a peptide bond. The resulting molecule will have a zwitterionic form. The zwitterionic form of the dipeptide will have both a positive and a negative charge.
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The brightness of a star as seen from Earth is referred to as (.......) brightness. what is the word I can't remember it
Answers
Answer:
Star's
Explanation:
Stars have their own brightness
The Law of Conservation of Mass says that mass
can neither be
nor
A .Gained, lost
B. Created, destroyed
C. Started, ended
D. Opened, closed
Answers
Answer:
B
Explanation:
The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.
State whether Br2 is polar or nonpolar
Answers
Bromine (Br2) is a covalent compound composed of two bromine atoms. The polarity of a molecule is determined by the distribution of electrons in the chemical bonds that hold the atoms together. In the case of Br2, it is a nonpolar molecule because the electrons are evenly distributed around the molecule.
The polarity of a molecule can be determined by using the molecular geometry and the dipole moment. The molecular geometry of a molecule is the three-dimensional arrangement of the atoms in the molecule. The dipole moment is a measure of the separation of charge within a molecule. A molecule with a nonzero dipole moment is considered polar, while a molecule with a zero dipole moment is considered nonpolar.
In Br2, the molecular geometry is linear. This means that the two bromine atoms are arranged in a straight line, with a bond angle of 180 degrees. Additionally, each bromine atom has a full valence shell of electrons and a formal charge of zero. This means that the electrons are evenly distributed throughout the molecule. Therefore, the dipole moment of Br2 is zero, indicating that the molecule is nonpolar.
In summary, the linear molecular geometry of Br2 and the equal distribution of electrons in the molecule make it a nonpolar compound. This is because the electrons are evenly distributed around the molecule, and there is no difference in charge between the two atoms.
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Which of the following correctly describes the Merrifield synthesis?
A) It uses a solid phase technique for the synthesis of peptides.
B) It uses DCC (dicyclohexylcarbodiimide) to form the amide bond in a peptide
synthesis.
C) It uses BOC (tert-butoxycarbonyl) as a protecting group for peptide synthesis.
D) It uses aqueous phase techniques for the synthesis of large polypeptides.
Answers
The option that correctly describes the Merrifield synthesis is It uses a solid phase technique for the synthesis of peptides.
The correct answer is option A.
The Merrifield synthesis is a solid-phase peptide synthesis method that was first proposed by R.B. Merrifield in 1963. It is a technique used in the synthesis of peptides or small proteins and involves the sequential synthesis of the peptide chain from the N-terminus to the C-terminus by attaching amino acid residues one at a time to a growing peptide chain attached to an insoluble resin matrix.
The solid-phase peptide synthesis technique is a type of peptide synthesis that is performed on a solid-phase support. The peptides are made up of a single, unbranched chain of amino acids joined by peptide bonds. This technique was first introduced by Merrifield in 1963.
A description of Merrifield synthesis Option A correctly describes the Merrifield synthesis. It uses a solid-phase technique for the synthesis of peptides. The peptide chain is grown sequentially from the N-terminus to the C-terminus by attaching amino acid residues one at a time to a growing peptide chain attached to an insoluble resin matrix.
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Write What you learned with examples from the Video.
You will need to have 10 of what you learned with examples..
Answers
A tutorial concerning atomic orbitals can help one comprehend the fundamental tenets of quantum mechanics pertaining to atoms and their electrons.
What can one learn from such tutorial?This tutorial encompasses the shapes, extents, as well as energies of atomic orbitals; moreover, it shows how they congregate to create molecular orbitals.
In addition to that, it notifies us on how the electronic arrangements of atoms determine their chemical traits and functions such as responsiveness and its capability to bond with other atoms.
Thus, a tutorial concerning atomic orbitals builds up a foundation for understanding the behavior of matter at both the atomic and molecular levels.
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Note that the video was about Orbitals in Atoms. Here is some information about that.
What about Basic Atomic Orbitals?Existence of electrons in an energy state is referred to as Basic Atomic Orbitals.
Characterized by their shape, energy, and probability of containing an electron, the orbitals are categorized into various types such as s, p, d and f - each with a unique structure and distinct energy levels. For instance, the spherical shape of an s-orbital possesses greater energy when away from the nucleus.
Meanwhile, a p-orbital has two lobes separated by a node. Of utmost importance when examining atoms, molecules, and chemical reactions is gaining knowledge about atomic orbitals. Unlike other orbitals, d and f varieties possess a high degree of complexity regarding shape as well as energy distribution.
Physically speaking,the probability that electrons exist within these orbitals can be determined through measuring electron densities based on their distances from nuclei.
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it is also called solution
Answers
Explanation:
In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. ... The term "aqueous solution" is used when one of the solvents is water.
(1) The reaction of tin (II) oxide with nitric acid.
Answers
Answer:
1) Tin. It is stable to water under ambient conditions but on heating with steam, tin reacts with water to from tin dioxide and hydrogen. It is stable in air under ambient conditions but on heating in air or oxygen, tin reacts with oxygen to from tin dioxide.
2) Nitric oxide combines with water vapour in the atmosphere to form nitric acid, which is one of the components of acid rain. Heightened levels of atmospheric nitric oxide resulting from industrial activity were also one of the causes of gradual depletion of the ozone layer in the upper atmosphere.
considering the ionic nature of the mg-o and na-cl bonds, which of the following statements do you agree with? considering the ionic nature of the mg-o and na-cl bonds, which of the following statements do you agree with? a. mg-o likely forms a more metallic bond than na-cl because it is made between divalent ions rather than monovalent ions. b. mg-o will exhibit a weaker bond than na-cl. c. assuming bond distances are about equal, mg-o will likely form a 4x stronger bond than na-cl.3 all are likely true.
Answers
Considering the ionic nature of the Mg-O and Na-Cl bonds, the statement that is most likely true is b. mg-o will exhibit a weaker bond than na-cl.
The bond between atoms occurs due to the tendency of atoms to attain stability by achieving a fully filled valence shell. The atoms that tend to gain or lose electrons for achieving the stable electronic configuration are known as ions. These ions form an ionic bond with the other oppositely charged ion in order to attain stability.In the given options, option (b) is most likely to be true, i.e. mg-o will exhibit a weaker bond than na-cl because it requires less energy to remove electrons from Na or Cl, as they are monovalent, than from Mg or O, which are divalent.
The bond strength is inversely proportional to the size of the ion, and Mg is a larger ion than Na. In contrast, option (a) is incorrect as the bond between two ions depends on the charge of the ions and the distance between them, not on the type of ion. Option (c) is incorrect as the bond strength is inversely proportional to the size of the ion, not directly proportional. Option (d) is incorrect as only option (b) is most likely true.
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This implies that most of the space in the atoms in the foil are taken up by ____
Answers
This implies that most of the space in the atoms in the foil are taken up by the electrons, which are negatively charged particles that orbit around the positively charged nucleus.
The structure of an atom consists of a nucleus containing protons and neutrons, with electrons orbiting around it in shells or energy levels. The electrons occupy most of the space in an atom because they are much smaller than the protons and neutrons in the nucleus.
Therefore, when a foil is bombarded with particles, most of the particles pass through the empty space between the electrons and the nucleus, making the foil mostly transparent to them.
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b. Give the noble gas configuration of vanadium (V), atomic number 23. (1 point)
Answers
Answer:
[Ar] 3d3 4s2
Explanation:
[Ar] 3d3 4s2
How many moles of helium gas would it take to fill a balloon with a volume of 1000.0 cm 3when the temperature is 32 o C and the atmospheric pressure is 752 mm Hg?
Answers
The number of moles of the gas is 0.0396 moles.
What is the ideal gas equation?The ideal gas equation is used to determine the relationship between the variables; temperature, pressure, volume and the number of moles of a gas. We know that the gas laws are used to understudy the parameters that has to do with gases.
Thus;
Volume = 1000.0 cm 3 or 1 L
Gas constant = 0.082 atmLK-1Mol-1
Temperature = 32 o C + 273 K = 305 K
Pressure = 752 mm Hg or 0.99 atm
Thus;
PV = nRT
n = PV/RT
n = 0.99 atm * 1 L/0.082 atmLK-1Mol-1 * 305 K
n = 0.0396 moles
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based on the appearance of your reaction (aluminum with copper (ii) sulfate) in thebeaker, which reagent do you think was consumed, and which reagent had some left over? explain.
Answers
Based on the appearance of the reaction of aluminum with copper (II) sulfate, the reagent that was consumed was aluminum, and the reagent that had some left over was copper (II) sulfate.
What is aluminum?Aluminum is a chemical element that has the symbol Al and the atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. Aluminum is the third most prevalent element and the most abundant metal in the Earth's crust after oxygen and silicon.
Copper (II) sulfate is a blue solid that is soluble in water. Its appearance is due to the presence of water of crystallization, which occurs in the crystal structure. It is a compound that is commonly used as a fungicide and algaecide because it is toxic to many fungi and algae. Copper sulfate has also been used to treat various diseases.
What happens when aluminum reacts with copper (II) sulfate?Aluminum replaces the copper ions in copper (II) sulfate and creates aluminum sulfate and copper metal when aluminum reacts with copper (II) sulfate. The chemical reaction between aluminum and copper (II) sulfate is as follows:
Al(s) + CuSO4(aq) ⟶ Al2(SO4)3(aq) + Cu(s)
When aluminum is placed in copper (II) sulfate solution, copper ions from copper (II) sulfate move to aluminum, displacing the aluminum ions in the process. As a result, the copper ions from copper (II) sulfate solution are lowered to metallic copper, and aluminum ions combine with sulfate ions from copper (II) sulfate solution to form aluminum sulfate, which is soluble in water. When copper metal is produced, it forms a brown layer on top of the solution and sinks to the bottom.
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A carbohydrate on analysis gave the following composition: carbon = 40.0%; hydrogen = 6.71%, and oxygen made up the rest.
Answers
Answer:
53.29%oxygen
Explanation:
math and stuff
What type of solid
does this particle
model represent?
A. ionic
C. molecular
B. metallic
D. network
Answers
Answer:molecular
Explanation: got it right on acellus
The type of solid this particle model represents is a molecular solid.
Molecular solids are a type of solid composed of individual molecules held together by intermolecular forces. Unlike ionic solids or metallic solids, where the bonding is primarily due to strong electrostatic forces or delocalized electrons, respectively, molecular solids are held together by relatively weaker intermolecular forces.
In molecular solids, the individual molecules are discrete entities that retain their molecular structure even in the solid state.
Therefore, the correct option is option C
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Elements with a high ionization energy lose electrons easily (True or False).
Answers
Answer:
False
Explanation:
a+patient+receives+160+ml+of+a+4.0+%+(m/v)+amino+acid+solution+twice+a+day.+how+many+grams+of+amino+acids+are+in+160+ml+of+solution?
Answers
160 ml of a 4.0% (m/v) amino acid solution contains 6.4 g of amino acids.
We can use the idea of percent concentration to determine how many grams of amino acids are present in 160 mL of a 4.0% (m/v) amino acid solution. Expressed by the mass percent concentration of the solute (amino acid) per 100 ml of solution. Since the solution in this example is 4.0% (m/v), 100 mL of solution contains 4.0 g of the amino acid.
We can make a ratio to determine how many grams are in 160 ml:
4.0 grams / 100 ml = x grams / 160 ml
When we cross multiply for x, we get:
x = (4.0 grams / 100 ml) * 160 ml
x = (0.04) * 160
x = 6.4 grams
Consequently, 160 mL of a 4.0% (m/v) amino acid solution contains 6.4 g of amino acids.
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A chemistry student is experimentally determining the boiling
point of bromine. The experimental melting points are listed
below from a toe. Which one should he discard so that he can
say his data is precise?
a 59.1°C
b 59.0 °C
C 58.8 °C
d 58.5 °C
e 56.3 °C
Answers
Answer:
discard e
Explanation:
all other temps are within 1 degree and therefore appear more precise than having an outlyer
calculate the mass, in grams, of 2.50 mol of iron(iii) hydroxide.
Answers
The mass, in grams, of 2.50 mol of iron(iii) hydroxide is 225g
Mass is the measure of amount of matter in a substance or in a object
Here given data is mass iron(iii) hydroxide in mole = 2.50 mol and we have to find mass in gram = ?
The mass of one mole of Fe(OH)₂ = 89.85g/mol
So multiply by given mole by molar mass
2.50mol Fe(OH)₂ = 89.85g/mol Fe(OH)₂/1 mol Fe(OH)₂ = 225g Fe(OH)₂
mass, in grams, of 2.50 mol of iron(iii) hydroxide is 225g
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Describe the properties of alkali metals. based on their electronic arrangement, explain whether they exist alone in nature.
Answers
The alkali metals can't exist alone in nature because of incomplete outermost shell of alkali metals.
What are the properties of alkali metals?The alkali metals have the high thermal and electrical conductivity. It has high lustre, ductility, and malleability as compared to other materials. Each alkali metal atom has one electron in its outermost shell which make more reactive.
So we can conclude that the alkali metals can't exist alone in nature because of incomplete outermost shell of alkali metals.
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What is the amount of heat energy absorbed when 36 grams of ice at -20oC is melted to water at 0oC?
Answers
Answer:
Q = 1461.6 J
Explanation:
Given data:
Mass of ice = 36 g
Initial temperature = -20°C
Final temperature = 0°C
Amount of heat absorbed = ?
Solution:
specific heat capacity of ice is 2.03 j/g.°C
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = T2 - T1
ΔT = 0°C - (-20°C)
ΔT = 20°C
Q = 36 g ×2.03 j/g.°C×20°C
Q = 1461.6 J
How has the organization of the periodic table changed over time?
Answers
Yes , there are many changes made in periodic table till date.
The periodic table is a chart that organizes the arrangement of the known and recognized chemical elements. The organization on the table is based on the atomic weight, electron configurations, and chemical properties of the elements. The elements are shown according to their increasing atomic weights, starting with the smallest and gradually moving up to the highest weights.
The periodic table has long-since filled in Mendeleev's gaps and has added new elements. It has even changed the weights of other elements. The periodic table is continually being changed as new discoveries are made and new theories are developed to explain the behavior of chemicals.
A huge number of changes were made to the periodic table in the early parts of the 20th century.
However, some interesting and significant changes have been made as recently as the past 20 years.
For example, two brand new elements were discovered in 2004 and 2006 respectively, and added to the periodic table in 2012. These elements are flerovium (element 114) and livermorium (element 116).
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I'm very confused on Solubility and Temperature. Please Help!
Imagine you have two beakers. Both beakers are filled with the same amount of water. The water in both beakers is the same temperature as well. You add 50 g of Substance A to the first beaker, and 50 g of Substance B to the second beaker. After stirring both beakers, there is a small pile of Substance B at the bottom of the second beaker. None of Substance A is visible in the first beaker. Which of the following statements is true?
Select one:
a. Substance B is not soluble in water
b. Substance A is not soluble in water
c. Substance A is less soluble in water than Substance B.
d. Substance A is more soluble in water than Substance B.
Answers
Which shows an isomer of the molecule below?
Answers
Answer: C
Explanation:
Don’t trust the other person it’s not A
*view photo for answer*
pay attention! the answer choices aren't always in the same order!
