The acid in the reaction would donate a proton and that would be HNO2.
How do you know an acid in a reaction?An acid in a chemical reaction can be identified by the presence of hydrogen ions (H+): Acids are compounds that produce hydrogen ions when dissolved in water. In a chemical reaction, an acid may donate a hydrogen ion to another compound or accept a pair of electrons from a base.
When we look at the reaction, we can see that the specie that has given out the replaceable hydrogen ion is HNO2 thus it is the acid in the reaction.
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use the trendline equation in fig6.2 to determine the kelvin temperature at which the pressure equals .72 atm
When the pressure is 0.72 atm, the temperature in Kelvin is 156 K.
To determine the Kelvin temperature when the pressure is 0.72 atm, you will need to use the trendline equation given in Fig 6.2. First, find the equation of the trendline by using the graph's two points, (300 K, 1 atm) and (500 K, 2 atm).
The equation for the trendline is:
y = mx + b
Where y is pressure, x is the temperature in Kelvin, m is the slope, and b is the y-intercept. We can find the slope of the trendline by using the two points provided in the graph:
Slope (m) = (y2 - y1) / (x2 - x1)
Slope = (2 atm - 1 atm) / (500 K - 300 K)
Slope = 0.005 atm/K
The equation for the trendline can now be written: y = 0.005x + b. To find the y-intercept, b, we can use one of the two points: Solving for b:
1 atm = 0.005(300 K) + bb = 1.5 atm
Now we can use the equation for the trendline to find the temperature (x) at which the pressure (y) equals 0.72 atm:
0.72 atm = 0.005x + 1.5 atm
0.72 atm - 1.5 atm = 0.005x
-0.78 atm = 0.005xx
= -0.78 atm / 0.005x
= 156K
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match each substance correctly to the principal type(s) of intermolecular force(s) present, other than covalent bonding.
Substance intermolecular force
CH2OH ---> Hydrogen bonding
CH3F --> Dipole-dipole forces
C3H8 --> Dispersion forces
CaCL2 --> Ionic bonding
The intermolecular force present in CH2OH is hydrogen bonding. The intermolecular force present in CH3F is Dipole-dipole forces. Ionic bonding is defined as a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions or between two atoms with sharply different electronegativities. It is the primary interaction occurring in ionic compounds. Hydrogen bonding results from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as a N, O, or F atom and another very electronegative atom.
Dipole-dipole forces are defined as a attractive forces between the positive end of one polar molecule and the negative end of another polar molecule. Dispersion force is defined as a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles.
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The complete question is,
Match each substance correctly to the principal type(s) of intermolecular force(s) present, other than covalent bonding.
CH2OH Ionic bonding
CH3F Hydrogen bonding
C3H8 Dispersion forces
CaCL2 Dipole-dipole forces
Using C2H4 + 3 O2 -> 2 CO2 + 2 H2O. If 20 moles of fuel are combusted in the above equation, how many moles of CO2 are produced?
what does 2NaOH equal
AsH3, HBr, KH, H2Se arrange in increasing order of acid strength
Answer:
Transcribed Image Text: Rank the following substances in order of increasing acid strength. (1 as least and 4 as most in acid strength) ✓ H₂Se ✓ HBr HI ✓ AsH3 Expert Solution
Explanation:
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For the partially completed Lewis structures, pick the correct Lewis structure.
How many Valence Electrons total overall?
The correct Lewis structures of the compounds that we have in the question have been shown in the images attached.
What is the Lewis structure?A Lewis structure is a diagram that shows the bonding between atoms in a molecule and the arrangement of electrons around the atoms. It is also known as a Lewis dot structure, Lewis dot diagram, or electron dot structure.
Lewis structures are useful in predicting the geometry of molecules and determining the polarity of molecules. They are also helpful in understanding the reactivity of molecules and how they interact with other molecules.
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structural change from a myoglobin tertiary structure to the inclusion of quaternary structure for hemoglobin
The quaternary structure of hemoglobin is responsible for the increased oxygen-carrying capacity and stability of the molecule. This structure allows hemoglobin to better transport oxygen throughout the body and is essential to life.
The structural change from myoglobin to hemoglobin includes an additional quaternary structure, which is the arrangement of two or more myoglobin subunits into a single, functional entity. This structural change allows for the cooperative binding of oxygen, meaning that the hemoglobin molecule can carry more oxygen than a single myoglobin molecule can. This is due to the increased surface area of the hemoglobin molecule, which provides more oxygen-binding sites. Additionally, the quaternary structure of hemoglobin increases the stability of the molecule, meaning it can better resist changes in pH or temperature. This is important because it allows hemoglobin to function in the wide range of temperatures and environments that are found within the human body.
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How many calories are required to raise the temperature of a 35.0 g sample from 35 °C to 85 °C? The sample has a specific heat of 0.108 cal/g °C.
Answer:
First, we need to calculate the change in temperature:
ΔT = final temperature - initial temperature
ΔT = 85 °C - 35 °C
ΔT = 50 °C
Next, we can use the following formula to calculate the heat energy required:
Q = m·C·ΔT
where Q is the heat energy in calories, m is the mass of the sample in grams, C is the specific heat in cal/g °C, and ΔT is the change in temperature in °C.
Plugging in the given values, we get:
Q = 35.0 g · 0.108 cal/g °C · 50 °C
Q = 189.0 calories
Therefore, 189.0 calories are required to raise the temperature of the sample from 35 °C to 85 °C
When a mineral breaks along a weekly bonded plane it is called
Answer: Cleavage
Explanation:
When a mineral breaks along a weekly bonded plane it is called cleavage
which the following optically active alcohol is treated with hbr, a racemic mixture of alkyl bromides is obtained
(S)-2-butanol will undergo an SN2 reaction with HBr to produce a racemic mixture of alkyl bromides. Here option B is the correct answer.
When optically active alcohol is treated with HBr, the reaction follows an SN1 or SN2 mechanism. In the case of SN1, a carbocation intermediate is formed, and in SN2, a backside attack by the nucleophile occurs. The stereochemistry of the product depends on the configuration of the intermediate and the direction of attack.
In the case of (S)-2-butanol, the hydroxyl group is attached to the second carbon atom, which makes it a primary alcohol. When treated with HBr, it undergoes an SN2 reaction, where the hydroxyl group is replaced by the bromine atom. The nucleophile attacks from the backside of the molecule, leading to an inversion of configuration.
This results in the formation of a racemic mixture of alkyl bromides, as both enantiomers have an equal chance of being attacked from either side. On the other hand, (R)-2-butanol, being the enantiomer of (S)-2-butanol, will also undergo the same reaction and produce the same racemic mixture of alkyl bromides.
In the case of (R)-1-phenyl ethanol and (S)-1-phenyl ethanol, they are secondary alcohols and can undergo either SN1 or SN2 reactions depending on the reaction conditions. However, the reaction mechanism will lead to the formation of a mixture of diastereomers, rather than a racemic mixture of enantiomers.
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Complete question:
Which of the following optically active alcohols, when treated with HBr, results in a racemic mixture of alkyl bromides?
a) (R)-2-butanol
b) (S)-2-butanol
c) (R)-1-phenyl ethanol
d) (S)-1-phenyl ethanol
Please help me Look at the picture below
The first two statements are false, whereas the last statement, which says that pressure and volume of a gas are inversely related, is true.
How are pressure and volume related to one another?Statement 1: This claim was incorrect because, according to the ideal gas law, PV=nRT, pressure (P) and volume (V) are inversely proportional to each other at a constant temperature (T) and amount of gas (n). This means that as pressure increases, volume decreases. This relationship is known as Boyle's law. Therefore, the statement that pressure has no effect on volume of a gas is false.
Statement 2: This claim was incorrect because, pressure and volume of a gas are inversely related according to Boyle's law, which states that at a constant temperature, the pressure of a gas is inversely proportional to its volume. This means that if the pressure of a gas increases, its volume will decrease, and if the pressure decreases, the volume will increase, as long as the temperature remains constant.
Statement 3: This claim was correct because, According to Boyle's law, the pressure and volume of a gas are inversely proportional to each other, which means that when the pressure of a gas increases, its volume will decrease and vice versa, as long as the temperature and the number of particles in the gas are kept constant. This relationship is expressed mathematically as P₁V₁ = P₂V₂, where P₁ and V₁ are the initial pressure and volume, and P₂ and V₂ are the final pressure and volume.
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THEORY 1. illustrate the formation of the Compound AIC 13 Electron dot representation.
The electron representation shows the electrons in the atoms as dots as in the image attached.
What is electron dot representation?An electron dot representation, also known as a Lewis dot structure or electron dot diagram, is a way of representing the valence electrons of an atom using dots around the symbol of the element.
Valence electrons are the outermost electrons of an atom, and they play an important role in chemical bonding. The electron dot representation shows the valence electrons as dots around the symbol of the element, with each dot representing one valence electron.
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Blood is an example of a basic buffer system. Which of the following could be used to mimic the buffering abilities of blood?
Select the correct answer below:
HF and NaF
CH3NH2 and CH3NH3Cl
KOH and H2O
none of the above
Using CH3NH2 and CH3NH3Cl, one may simulate the blood's buffering properties. A weak acid and its conjugate base, or a weak base and its conjugate acid, make up a buffer system.
Which of the following best describes the blood's buffer system?Carbonic acid and sodium bicarbonate. Hint: Human blood has a buffer of bicarbonate anion (HCO3) and carbonic acid (H2CO3) to keep the blood's pH between 7.35 and 7.45. Blood pH values higher or lower than 7.8 or 6.8 can be fatal.
Is blood an illustration of a fundamental buffer system?Bicarbonate anion and hydronium are in equilibrium with carbonic acid in this buffer. A weak acid and its conjugate base, or a weak base and its conjugate acid, make up a buffer.
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Answer:
CH3NH2 and CH3NH3Cl
Explanation:
Methylamine (CH3NH2) is an organic base. In order to produce a basic buffer solution similar to blood, we can combine this base with a soluble salt of its conjugate acid, such as CH3NH3Cl. The solution of KOH and H2O would not be a good buffer because KOH is a strong base. The solution of HF and NaF is a buffer, but the pKa of HF is about 3.2, which is far from the pH of blood, 7.4.
write a balanced equation for the redox reaction between calcium metal and oxygen gas
a balanced equation for the redox reaction: 2 Ca(s) + O2(g) → 2 CaO(s)
What is a redox reaction?A redox reaction is a type of chemical reaction that involves the transfer of electrons between species. One species undergoes oxidation (loses electrons) while another species undergoes reduction (gains electrons).
Which species is being oxidized and which species is being reduced in the reaction between calcium metal and oxygen gas?In the reaction between calcium metal and oxygen gas, the calcium metal is being oxidized (loses electrons) and the oxygen gas is being reduced (gains electrons). This can be seen in the balanced equation where the calcium atoms go from having an oxidation state of 0 to +2, while the oxygen atoms go from having an oxidation state of 0 to -2.
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Which of the following molecules is drawn in a conformation that has a proton and a leaving group anti-periplanar? H₂C, Br Ph. H CH3 Br H H₂C Br H₂C Ph H₂C CH3 H Ph H₂C, Br H Ph Save for Later CH3 CH3 CH3 CH3 CH3 Sul
The molecule that is drawn in a conformation that has a proton and a leaving group anti-periplanar is H₂C, Br.
The A, B, C, and D bond angles of a molecule are referred to as anti-periplanar, or antiperiplanar, in organic chemistry. The dihedral angles of the A–B and C–D bonds in this conformer are larger than +150° or less than 150°. In textbooks, the term "anti-periplanar" is frequently used to refer to a strictly anti-coplanar structure with a 180° AB CD dihedral angle. The anti-periplanar functional groups will be 180° apart from one another and in a staggered configuration in a Newman projection of the molecule.
Conformation is an essential factor in predicting reactivity in organic molecules. The anti-periplanar conformation of a molecule is one that occurs when two atoms in a molecule are in the same plane and are separated by 180 degrees. In this case, the proton and leaving group are placed in a perpendicular plane to the atoms directly in between them. This is the most stable conformer of the molecule. A significant factor in predicting reactivity in organic molecules is conformation. In this case, the molecule H₂C, Br is drawn in a conformation that has a proton and a leaving group anti-periplanar.
Therefore, the correct option is H₂C, Br.
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Identify each of the following orbitals, and determine the n and quantum numbers. Explain your answers.
(a) one radial node the Number of radial nodes = n - l - 1
And number of angular nodes = l
n = 3 and l = 1
Orbital is 3p.
(b) It has zero angular node hence s-orbital and there is 1 radial node . 1 = n - 0 - 1 ; n = 2 and l = 0
The orbital is 2s.
(c) the shape of the orbital is that of dz². There is two angular nodes and there is no radial node.
n = 3 and l = 2
Hence the orbital is 3dz².
What is radial node?In atomic physics, a radial node is a point in space where the probability density of finding an electron in an atom is zero. It is a type of nodal plane that occurs in atomic orbitals, which are regions of space where electrons are most likely to be found.
Radial nodes occur in the radial distribution function of an atomic orbital, which describes the probability density of finding an electron at a given distance from the nucleus. The number of radial nodes in an atomic orbital is equal to n - l - 1, where n is the principal quantum number and l is the azimuthal quantum number.
Radial nodes represent regions of space where the radial wave function of the electron changes sign.
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The SI unit of pressure is the _______.
The boiling point of water is _______ on Mount McKinley than the boiling point of water in NYC.
At lower elevations, atmospheric pressure _______ compared to higher elevations.
Standard atmosphere or standard atmospheric pressure is equal to _______ Pa.
The SI unit of pressure is the Pascal (Pa).
The boiling point of water is lower on Mount McKinley than the boiling point of water in NYC.
What is Pressure?
Pressure is defined as the amount of force applied perpendicular to the surface of an object per unit area over which that force is distributed. In other words, it is the force per unit area that an object exerts on another object. Pressure can be measured in various units such as pascal (Pa), bar, pounds per square inch (psi), and atmospheres (atm), among others. It is an important concept in physics and is used to describe many phenomena, including fluid dynamics, weather patterns, and even the behavior of gases in space.
At lower elevations, atmospheric pressure is higher compared to higher elevations.
Standard atmosphere or standard atmospheric pressure is equal to 101325 Pa.
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Predict the principal organic product of the following reaction. Specify stereochemistry where appropriate.
The major organic product of an SN2 substitution reaction is an alkene, which may be either in retention or inversion of configuration relative to the original substrate.
The reaction you are asking about is an SN2 substitution reaction, in which a nucleophile (Nu) displaces a leaving group (LG) from a molecule with an alkyl halide substrate. The major organic product of this reaction will be an alkene, which has the same carbon chain as the alkyl halide substrate. Depending on the relative configuration of the substrate, the alkene product may be the same as the original substrate (retention) or have its configuration inverted (inversion). If stereochemistry is relevant to the question, then it should be specified in the answer.
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FILL IN THE BLANK. Use the Gizmo to find the freezing, melting, and boiling points of water at 5,000 meters (16,404 feet). Write these values below. Freezing point: _______ Melting point: _______ Boiling point: _______
If we use the Gizmo to find the freezing, melting, and boiling points of water at 5,000 meters (16,404 feet) then,
Freezing point: 32 ºF (0ºC)
Melting point: 32 ºF (0ºC)
Boiling point: 203°F (95°C)
The freezing point is defined as the temperature at which a liquid becomes a solid. Increased pressure usually raises the freezing point with the melting point of the solid. The boiling point of a pure substance is defined as the temperature at which the substance transitions from a liquid to the gaseous phase. At the boiling point the vapor pressure of the liquid is equal to the applied pressure on the liquid. The melting point of a substance is defined as the temperature at which the substance changes from a solid to a liquid.
Melting occurs at a single temperature for the pure substances. The normal and average melting point and boiling point of water at 1 atmospheric pressure are 0°C and 100°C respectively. Decreasing the pressure under 1 atm. will lower the boiling point since the external pressure will be lower so it will become equal with the vapor pressure at a lower temperature.
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Consider the reaction between aqueous solutions of potassium hydroxide and chromium (III) chloride. Based on your balanced equation for this reaction, answer the following questions: 1) What are the spectator ions in this reaction? and 2) What is the formula for the precipitate formed in this reaction? 3) What is the sum of all the coefficients in the net ionic equation for this reaction? Net lonic Equati....pdf Hydrocarbon C....pdf
The net ionic equation for the given reaction is: 1 Cr3+(aq) + 3OH-(aq) → Cr(OH)3(s)
2. The formula for the precipitate formed in this reaction is Cr(OH)3.
3. The sum of all coefficients in the net ionic equation is 4.
Consider the reaction between aqueous solutions of potassium hydroxide and chromium (III) chloride. The balanced chemical equation for the given reaction is:KOH(aq) + CrCl3(aq) → KCl(aq) + Cr(OH)3(s)1) Spectator ionsThe ions that do not take part in the reaction are known as spectator ions.
These ions are present on both sides of the equation without undergoing any chemical changes.The ionic equation for the given reaction is:3K+(aq) + 3OH-(aq) + Cr3+(aq) + 3Cl-(aq) → 3K+(aq) + 3Cl-(aq) + Cr(OH)3(s)The spectator ions are K+ and Cl-.2)
PrecipitateThe precipitate is formed when the two reactants are combined together, and it can be identified from the ionic equation. In this reaction, the precipitate is formed when KOH is added to the aqueous solution of chromium(III) chloride.The formula for the precipitate formed in this reaction is Cr(OH)3.3) Sum of all coefficientsThe net ionic equation represents the actual chemical change occurring in the reaction.
The spectator ions are removed, and only the ions that participate in the reaction are shown. The net ionic equation for the given reaction is:Cr3+(aq) + 3OH-(aq) → Cr(OH)3(s)The sum of all coefficients in the net ionic equation is 4.
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draw a mechanism showing the penta-coordinate intermediate and the formation of the phosphorylated intermediate (which is an anhydride)
The formation of the phosphorylated intermediate (an anhydride) involves the formation of a penta-coordinate intermediate. This intermediate is formed by a nucleophilic attack of the sulfur on the phosphorus atom of the phosphate group.
In this mechanism, the sulfur atom of the sulfate group nucleophilically attacks the phosphorus atom of the phosphate group to form a penta-coordinate intermediate. This intermediate then rearranges to form a phosphorylated intermediate, which is an anhydride.
Mechanism showing the penta-coordinate intermediate and the formation of the phosphorylated intermediate are given as follows:
Step 1: Alkyl Phosphate Formation : The first step of the mechanism includes the formation of an alkyl phosphate. A proton is abstracted by OH− from the phosphate group to create the alkyl phosphate. The base catalyzes this step.
Step 2: Binding to Mg2+After the alkyl phosphate is created, the magnesium ion binds to it.
Step 3: Nucleophilic attack: Following that, the nucleophilic attack happens, with the nucleophile being the water molecule. It is coordinated with the magnesium ion. It occurs at phosphorus, causing it to be phosphorylated. It results in the creation of a pentacoordinate intermediate.
Step 4: Release of Orthophosphate: Orthophosphate is released as a result of the reaction between pentacoordinate intermediate and water. It results in the creation of a diester intermediate.
Step 5: Subsequent Hydrolysis: In the final step, the intermediate diester is hydrolyzed to form orthophosphate and the final product. This is accomplished via nucleophilic substitution.
The end result is a free phosphate group that is bound to the alcohol's oxygen. A phosphate anhydride is formed in the process.
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1. What volume of hydrogen gas at STP is produced from the
reaction of 50.0g of Mg and 75.0 grams of HCl? How much
of the excess reagent is left over (in grams)?
Answer:
1.03 mol of dihydrogen gas will evolve, with a volume slightly over 22.4 dm3 at ST P. Explanation: Moles of magnesium: 50.0 ⋅ g 24.31 ⋅ g ⋅ mol−1 = 2.06 mol Moles of hydrogen chloride gas: 75.0 ⋅ g 36.2⋅ g ⋅ mol−1 = 2.07 mol
Explanation:
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or the substituted cyclohexane compound shown, identify the atoms that are cis to the hydroxyl (oh) substituent.
The atoms that are cis to the hydroxyl (OH) substituent are the two carbon atoms in the ring that are directly adjacent to the OH group.
Cis-trans isomerism is a word used in chemistry that refers to the spatial arrangement of atoms within molecules. It is also known as geometric isomerism or configurational isomerism. The Latin prefixes "cis" and "trans" mean, respectively, "this side of" and "the other side of." Trans conveys that the functional groups (substituents) are on the opposite (transverse) sides of some plane, whereas cis implies that they are on the same side of some plane in the context of chemistry.
Cis-trans isomers are examples of stereoisomers, which are pairs of molecules with the same formula but distinct functional groups oriented in three dimensions. The absolute stereochemical explanation of E-Z isomerism does not necessarily equate to cis-trans notation.
The hydroxyl group (-OH) is attached to carbon number 1. The cis atoms are those that are attached to the same side of the ring. There are two atoms that are cis to the hydroxyl (OH) substituent, and these are atoms number 2 and 3. Therefore, the atoms that are cis to the hydroxyl (OH) substituent are atoms number 2 and 3 .
Thus, the cis to the hydroxyl (OH) is (B) 2 and 3.
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What kind of scientist would study the effects of acid rain on marble statues? A. A physicist B. A biologist C. A chemist D. An economist
Scientists would research the impacts of marble monuments and acid rain. A chemist. Hoping this is useful.
The correct answer is :C.
What are the substances that change the earth's surface?Surface sediments are transported and large stones are broken up through wind, water, and ice. Years are often needed for weathering, erosion, and deposition to cause noticeable changes. Nonetheless, certain things change the Planet's surface far more quickly than others. Extreme events, earthquakes, and volcanic eruptions are a few of them.
What adjustments to the Planet's surface may rain makes?Weathering and erosion caused by water movement change the properties of the terrain. Regional wind patterns and climate are defined by several interactions, including the role of the ocean. The unique physical and chemical properties of water have a profound effect on the planet's dynamics.
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Write the electronic configuration and draw the orbital diagram for the element: lead (Z=82) State if it is diamagnetic/paramagnetic. Please decide the diamagnetic/paramagnetic property based on the orbital diagram only! (It is okay to use the noble gas in square brackets here)
Answer:
See below.
Explanation:
The atomic number of lead (Pb) is 82, which means it has 82 electrons. The electronic configuration of lead is
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p²
The orbital diagram for the valence electrons of lead (Pb) is
↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓
s s p p p p d d
2 1 6 2 6 2 10 10
|||||||||
1 2 3 4 5 6 7 8
The notation ↑↓ represents a pair of electrons with opposite spins.
To determine if lead (Pb) is diamagnetic or paramagnetic, we need to look at whether there are any unpaired electrons. Based on the orbital diagram, we can see that all the electrons in the valence shell are paired, meaning that lead (Pb) is diamagnetic.
We know that Paz is trying to produce ammonia (NH3) from thin air. From looking at the experimental set-up, what are the reactants? a) NO2 and H20 b) N2 and H2 c) NO2 and H2 d) N2 and H20
To produce ammonia (NH₃) from thin air, the reactants required are N₂ and H₂. So the correct option is b).
Give a brief account on production of ammonia.Ammonia is one of the most abundantly produced inorganic chemicals. In 2016, there are a number of large ammonia plants around the world that produced a total of 144 million tons of nitrogen (equivalent to 175 million tons of ammonia). That number will rise to 235 million tonnes of ammonia in 2021. China produced 31.9% of its global production, followed by Russia at 8.7%, India at 7.5% and the United States at 7.1%. More than 80% of the ammonia produced is used as fertilizer for agricultural crops.
Today, most ammonia is produced on a large scale using the Haber process, with capacities of up to 3,300 tons per day. Gases N₂ and H₂ are reacted at a pressure of 200 bar. A typical modern ammonia production plant first converts natural gas, LPG, or petroleum gas into gaseous hydrogen. The process of producing hydrogen from hydrocarbons is known as steam reforming. Hydrogen then combines with nitrogen to produce ammonia by the Haber-Bosch process.
One way to produce green ammonia is to use hydrogen from the electrolysis of water and nitrogen separated from air. These are fed into the Haber Process (aka Haber-Bosch), all of which produce sustainable power.
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