If 6 mol of hydrogen gas completely reacts with phosphorus at 298 k, the final pressure in a 5.0 l reaction vessel is 20 atm. When a reaction occurs, P4(s) + 6H2(g) => 4PH3 (g).
The force perpendicularly applied to an object's surface divided by the area over which it is dispersed is known as pressure. The gauge pressure, also known as gauge pressure, is the pressure in relation to the surrounding air pressure. To express pressure, a variety of units are employed. The chemical element phosphorus has the atomic number 15 and the letter P in its name. Phosphorus is an element that exists in two main forms, red and white phosphorus, but is never found on Earth as a free element due to its strong reactivity.
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consider the species n2–, n2, and n2+. which of these species will be paramagnetic?
The paramagnetic species in the list are; [tex]N_{2} ^- and N_{2} ^+[/tex]
What is Para magnetism?We know that the term Para magnetism has to do with a situation in which a specie has unpaired electrons. As we fill in the molecular orbitals, we have to look out for the species in which we would have unpaired electrons.
We can see that that the nitrogen molecule cation and the nitrogen molecule anion both have unpaired electrons thus they are paramagnetic. The nitrogen molecule is a diamagnetic specie because it as paired electrons.
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write the chemical formula for the conjugate acid of the aniline, c6h7n. (enter the elements in the order: c, h, n, o.)
The chemical formula for the conjugate acid of the aniline: Phenylammonium ion (C₆H₅NH₃⁺).
What is conjugate acid?Conjugation, also known as a verbal paradigm, derives from the Latin meaning "link together" and relates to the inflection of verbs for the person, number, tense, and mood.
A conjugate acid has one extra H atom and one more (+) ve charge than the base from which it was created. When an acid contributes a proton to a base, conjugate acid is created. A conjugate base has one fewer H atom and one more (-) ve charge than the acid from which it was produced.
Thus, the chemical formula for the conjugate acid of the aniline: Phenylammonium ion (C₆H₅NH₃⁺).
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match the element with its number of valence electrons. group of answer choices nitrogen [ choose ] silicon [ choose ] oxygen [ choose ] magnesium [ choose ]
The electrons in an atom that are in orbits away from the nucleus are called valence electrons. Nitrogen: 5, Silicon: 4, Oxygen: 6, Magnesium: 2.
What exactly is a positive electron and why is it significant?Valence electrons are the electrons that reside in an atom's outermost shell. The role of valence electrons in controlling an atom's reaction makes them crucial. By writing an octet, you'll be enabled see how many protons fill the highest amount of energy.
What is valence defined simply?In chemistry, valence, sometimes called valency, is a characteristic of an element who establishes how many other atoms of the element each atom can interact with. The phrase, which was first used in 1868, is used to represent both the broad capability of pairing of an element and its numerical value.
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why is a temperature of -280 c impossible?
A temperature of -280°C is impossible because it is below absolute zero which is the lowest possible temperature that can be reached.
Absolute zero is defined as -273.15°C or 0 Kelvin.
Why do some bodies in the Solar System maintain countless well-preserved indications of impacts on their surface
even after many millions of years? Give some examples and explain in detail how at least 2 factors contribute to this
Answer:
There are several factors that contribute to the preservation of impact craters on the surface of bodies in the Solar System.
One factor is the lack of erosion or weathering on these bodies. Many of the bodies in the Solar System, such as the Moon and many of the outer planets' moons, do not have atmospheres or hydrospheric systems (like oceans, lakes, or rivers) that can erode or weather the surface over time. This means that the surface of these bodies is not subjected to the same types of processes that can wear away or smooth out surface features on Earth. As a result, impact craters and other surface features can remain well-preserved for millions of years.
Another factor that can contribute to the preservation of impact craters is the presence of a surface layer of material that is resistant to erosion. For example, on the Moon, the surface is covered by a layer of fine-grained dust called regolith, which is made up of small rocks and particles that have been ground up by impact and other processes. This regolith layer is relatively soft and easily disturbed, but it also acts as a protective layer that can preserve the underlying surface features. Similarly, on some of the outer planets' moons, there may be a layer of ice or other materials that can act as a protective layer and preserve impact craters and other surface features.
Examples of bodies in the Solar System that have well-preserved impact craters include the Moon, Mars, and many of the outer planets' moons, such as Europa and Ganymede. The lack of erosion and the presence of protective surface layers on these bodies have allowed them to maintain countless well-preserved indications of impacts on their surfaces even after many millions of years.
Explanation:
To solve this, we must know each and every concept behind solar system. Therefore, impact craters enable scientists to investigate the geological history of a planet.
What is solar system?The Solar System is composed of the Sun and the objects that orbit it. It was created by the gravitational collapse of a massive interstellar molecular cloud 4.6 billion years ago. The Sun contains the vast bulk of the system's mass (99.86%)
Several processes contribute to the preservation of impact craters on the surfaces of Solar System worlds. The absence of erosion or weathering on these bodies is one cause. Another aspect that can aid in the preservation of impact craters is the existence of an erosion-resistant surface layer of material.
Therefore, impact craters enable scientists to investigate the geological history of a planet.
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Question Millikan utilized specific numerical data gathered by: Select the correct answer below:
O JJ. Thomson
O John Dalton
O Ernest Rutherford
O all of the above
SUBMITE FEEDBACK MORE INSTRUCTION
Millikan utilized specific numerical data gathered by JJ. Thomson
The Nobel Prize in Physics was awarded to American experimental physicist Robert Andrews Millikan (March 22, 1868 – December 19, 1953) in 1923 for his work on the photoelectric effect and the measurement of the fundamental electric charge.
To ascertain the amount of electric charge that a single electron can hold, Millikan started a series of experiments in 1909. The first thing he did was chart the movement of charged water droplets in an electric field. The experiment was not precise enough to produce results that were persuasive, but the data did indicate that the charge on the droplets is a multiple of the elementary electric charge. His well-known oil-drop experiment, in which he substituted oil for water, produced more accurate results in 1910.
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determine the net change in nadh , fadh2 , and gtp from the passage of two acetyl-scoa molecules through the citric acid cycle. degradation of one molecule of glucose yields two acetyl-scoa molecules.
The net change in NADH , FADH2 , and GTP is : NADH : 6 molecules, FADH2 : 2 molecules, and GTP : 2 molecules.
The citric acid cycle is the also called as the krebs cycle. it is also called as the TCA cycle. it is the series of the chemical reactions occurs to release the energy that is stored through the oxidation of the acetyl CoA. the net change in NADH , FADH2 , and GTP from the passage of two acetyl-CoA molecules through the citric acid cycle. degradation of one molecule of glucose yields two acetyl-CoA molecules.
The NADH = 6 molecules
The FADH2 = 2molecules
The GTPP = 2 molecules
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Which of the following is CORRECT when considering the tertiary structure of globular proteins?
Which of the following is CORRECT when considering the tertiary structure of globular proteins?
Hydrophobic residues are normally on the inside and hydrophilic residues are on the outside.
The amino acid proline never occurs in a region where the polypeptide chain bends or turns.
All parts of the proteins can be classified as helix, β sheet or turns.
β sheets cannot be twisted or wrapped into barrel structures.
None of the above.
The correct response is C) Hydrophobic residues are normally on the inside and hydrophilic residues are on the outside.
According to Merriam-Webster, the word "hydrophilic" means "of, related to, or having a high affection for water." In essence, this means having the capacity to mix easily, dissolve, or bind to water. The 'hydrophilicity' of a molecule or surface refers to how much or how little it draws water. Sugar, salt, starch, and cellulose are a few of the most typical examples of hydrophilic compounds. Aluminum foil is one example of a hydrophilic metal surface. Lotus leaves are extremely hydrophobic and cause water to bead because of their surface structure. Hydrophobic surfaces tend to reject water, forcing it to form droplets.
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Which of the following is CORRECT when considering the tertiary structure of globular proteins?
A) All parts of the proteins can be classified as helix, β sheet or turns.
B) The amino acid proline never occurs in a region where the polypeptide chain bends or turns.
C) Hydrophobic residues are normally on the inside and hydrophilic residues are on the outside.
D) β sheets cannot be twisted or wrapped into barrel structures.
E) None of the above.
Why noble gases are non-reactive?
Noble gases are non-reactive due to having a valence outermost shell.
In the field of chemistry, noble gases can be described as gases that are present in group 8 of the periodic table of elements.
All noble gases have their outermost shell that is full. This means that the outermost shell has valence electrons in its outermost shells and their valency is complete. Hence, noble gases do not take or lose electrons.
As there is no exchange of electrons for noble gases due to their achieved valency of outermost shells, hence noble gases are non-reactive. No other group of elements in the periodic table has outermost valence electrons and hence shows some kind of reactivity.
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Which of the following transitions have minimum wavelengthA n4→n1
B n2→n1
C n4→n2
D n3→n1
The right answer is B, where n is changed from 3 to 1. A transition's energy release is given by E 36Z2(1n211n22)eV.
What in spectroscopy is a transition?
When an electron is promoted from a full orbital to an empty orbital, transitions take place. In -bonds, sigma electrons are found.
The relationship between electron transitions and wavelength
Planck's equation, E = h, relates the energy change connected to a transition to the wavelength of the electromagnetic wave. The formula c = links the wave's frequency to both its wavelengths and the light's speed.
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fluorine gas and water vapor react to form hydrogen fluoride gas and oxygen. what volume of oxygen would be produced by this reaction if of fluorine were consumed?
Hydrogen fluoride gas & oxygen are produced in the Vo2=1.5m3 fluorine and water vapor reaction. if fluorine were consumed, how much oxygen would be generated by this reaction?
What distinguishes hydrofluoric acid from hydrogen fluoride?
APPEARANCE: Below 67°F (19.4°C), hydrogen fluoride is indeed a colorless seething liquid or a colorless vapor. Hydrofluoric acid, the colorless liquid that is visually indistinguishable to water at low concentrations, is created when hydrogen fluoride and water are mixed.
What components make up hydrogen fluoride?
A hydrogen atom as well as a fluorine atom combine to form the colorless chemical known as hydrogen fluoride. Hydrofluoric acid is the name given to it when dissolved in water. In industrial contexts, hydrogen fluoride is utilized to produce refrigerants in amounts up to 60%.
Briefing:
Vo2=1/2*H2O
Vo2=1/2*3.0
Vo2=1.5m3
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10. Calcium sulfide (CaS) is insoluble in water: Why ? would positive because the ion-C ~dipole interactions are If CaS were to dissolve. 4H very weak compared to the ion-ion interactions being overcome: Salts containing Ca?* are never soluble in water: The covalent bonds in CaS would require a great deal of energy t0 overcome upon dissolving. If CaS were t0 dissolve, 4S would be negative because the possible arrangements for the water molecules would decrease:
Calcium is a exceptionally reactive steel that reacts violently in a much less way with water. When calcium reacts with water, it has a tendency to displace hydrogen from the water.
Along with this, it produces bubbles of hydrogen fueloline in addition to calcium hydroxide. Therefore, an appropriate choice to this query is (D) (iii) and (iv).This is a binary compound and it's far an ionic compound, that is polar ionic compounds which might be polar in nature need to be quite simply soluble in water, however this calcium sulfide is stated to be insoluble in water. So the motives for that is for an ionic compound, that is collar to be soluble.
The calcium carbonate will dissolve withinside the acid generating CO2 fueloline. It will now no longer dissolve in natural water.If CaS had been to dissolve, AH could be high-quality due to the fact the ion-dipole interactions are very vulnerable as compared to the ion-ion interactions being overcome.
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draw the enantiomer of (s)-2-bromo-2-chlorobutane shown below. it may help to use molecular models.
Enantiomers are pairs of compounds with exactly the same connectivity but opposite three-dimensional shapes.
What is a enantiomer?
In chemistry, an enantiomer (also called an optical isomer, enantiomer, or optical antipode) is one of two stereoisomers that are not superimposable on their own mirror image. Enantiomers are similar to the right and left hands and cannot be superimposed when looking at the same face. No amount of reorientation will align the four unique groups (see Chirality (Chemistry)) on the chiral carbons exactly. The number of stereoisomers a molecule has can be determined by the number of chiral carbons it has. Stereoisomers include both enantiomers and diastereomers.
Like enantiomers, diastereomers have the same molecular formula and are not superimposable, but they are not mirror images of each other.
Therefore, Enantiomers are pairs of compounds with exactly the same connectivity but opposite three-dimensional shapes.
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This rock known as balanced rock sits on thin spike of rock in a canyon in Idaho explain the forces that keep the rock balanced on its tiny pedestal
Answer:
Action force and Reaction force
Explanation:
The action force which is the balanced rock pushing down due to gravity and the reaction force pushing the equal amount of force. These two things are stated in Newtons third law, where he states that "Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first." Also, he states that "all forces acts in pairs," meaning that every force exerted, there is an opposite force on the first
ir spectrum of limonene
Infrared radiation light spectrum of limonene - 1 methyl-4-(1 methylethenyl)-cyclohexene.
The study of how electromagnetic radiation is absorbed, emitted, and scattered by atoms and molecules-whether they are in the gaseous, liquid, or solid phase-is known as spectrum spectroscopy. Although the terms light, radiation, and electromagnetic radiation can all be used interchangeably, visible electromagnetic radiation is referred to as light. In Activities 1 and 2, you will learn about various characteristics of electromagnetic radiation. Understanding molecular characteristics and the outcomes of spectroscopic studies requires spectroscopy, which was essential in the development of quantum mechanics. To make the subject more tangible and less abstract and technical, it serves as a "stepping stone" to introduce us to the ideas of quantum mechanics and the quantum mechanical explanation of molecular features. A spectrum is a graph that shows how an atomic or molecular system responds to specific wavelengths of radiation or the intensity of the radiation at those wavelengths. An absorption spectrum shows how much light is absorbed by a material at each wavelength of radiation. The three most popular ways to visualize an absorption spectrum are as a plot with either the transmission (T), absorbance (A), or absorption coefficient on the y-axis and the wavelength on the x-axis. The optical density is another name for the absorbance. If we use the definitions of I0 (amount of light striking a sample), I (amount of light the sample transmits), and d (thickness of the sample).
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Complete question- What is Infrared radiation (IR) spectrum of limestone Draw the graph.
at 46oc and 0.880 atm pressure, a gas occupies a volume of 0.600 l. how many liters will it occupy at 0oc and 0.205 atm?
At 46⁰C and 0.880 atm pressure, a gas occupies a volume of 0.600l, It will occupy 1.643 L at 0°C and 0.205 atm.
What is ideal gas equation?PV = nRT is the equation for an ideal gas. P is the ideal gas's pressure, V is the ideal gas's volume, n is the entire amount of ideal gas, expressed in moles, R is the universal gas constant, and T is the temperature.
Given that,
Pressure (P₁) = 0.88 atm
Volume (V₁) = 0.6 L
Temperature (T₁) = 46⁰C = 319 K
Pressure (P₂) = 0.205 atm
Volume (V₂) = ?
Temperature (T₂) = 0⁰C = 273 K
Using ideal gas equation:
P₁V₁/T₁ = P₂V₂/T₂
or, (0.88) × (0.6) / 319 = (0.275 × V₂) /273
or, V₂ = 1.643 L
Thus, it will occupy 1.643 L at 0°C and 0.205 atm.
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The colour of chromium
Answer:
Chromium appears Silvery grey in color, with a highly polished surface.
When Chromium is heated it forms a green color Chromic oxide.
a _______ is a type of mixture where at least one of the components is a mixture
Answer: Alloys, such as steel which is made from a mixture of iron and carbon.
Why is vinyl carbocation unstable?
vinyl carbocation is unstable due to its hybridization and presence of double bonds.
A carbocation in which the carbon atom having the open octet and positive formal charge is part of a carbon-carbon double bond. Hybridization with a better s-character A better s-character in addition depletes the carbon atom and makes it extra electron poor that makes a carbocation pretty risky. Thus, vinyl carbocation is unstable due to its hybridization and presence of double bonds. A vinyl carbocation has a positive charge on the same carbon because the double bond. This is very risky and ranks below a methyl carbocation in stability. Allylic carbocations are capable of percentage their burden of charge with a close-by institution through resonance.
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atmospheric carbon dioxide levels have been increasing from year to year. however, in locations in the northern hemisphere, carbon dioxide levels may decrease slightly during the summer months. which is the most likely explanation for these slight summertime decreases?
As sediments and dead vegetation slowly filed the pond, the types of plants in the community changed.
With the aid of stopping invasive species and new pests from harming or changing native flowers and animals, the regulations prevent the accumulation of useless leaves, bugs, and animals. just photo how the sector may appear! more significantly, decomposers enable the number one producers of an ecosystem, typically flora and algae, to access essential nutrients.
the first oPioneer species are the first creatures to arise in zones of number one succession (usually lichens or mosses). they may be the unique species inside the area. They ought to be robust and resilient.
The Gulf circulate, which transports heat floor water up from the tropics to North the us and Western Europe, turned into removed via the freshwater.
The freshwater killed off the Gulf move, which brings heat floor water up from the tropics to North the usa and Western Europe.
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a red blood cell is placed into each of the following solutions. indicate whether crenation, hemolysis, or neither will occur. solution a: 2.6 % (m/v) nacl solution b: 3.27 % (m/v) glucose solution c: distilled h2o solution d: 6.03 % (m/v) glucose solution e: 5.0% (m/v) glucose and 0.9% (m/v) nacl
6.03% (m/v) solution of glucose Solution of 2.6% (m/v) nacl 5.0 m/v glucose and 0.9% m/v nacl were present.
What happens when there is hemolysis?In hemolytic anemia, red blood cells are lost more quickly than they are produced. Hemolysis is the term for the breakdown of red blood cells. Oxygen is transported throughout your body by red blood cells. You have anemia if your red blood cell count is below normal.
What is the most typical reason for hemolysis?A blood condition known as hemolytic anemia is when your red blood cells degrade or expire more quickly than your body can produce new blood cells to replace them. People may inherit genetic disorders that lead to anemia, certain illnesses, or they may develop hemolytic anemia.
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Balance the following nuclear equations
There can be emissions of radiations like gamma radiation. There can be emission of particles too like alpha particle. Therefore, the blanks can be filled using ₁H¹ and ₁₅P³⁰ .
What is nuclear decay?Nuclear decay is process in which the radioactive element releases particles or radiations. Alpha particles is ⁴₂He. Alpha particle is nothing but helium particle.
The balanced nuclear equation for the given reaction can be given as
₃Li⁷ + ₁H¹ [tex]\rightarrow[/tex] 2 ₂He⁴
₁₃Al²⁷ + ₂He⁴ [tex]\rightarrow[/tex] ₁₅P³⁰ + ₀n¹
Therefore, the blanks can be filled using ₁H¹ and ₁₅P³⁰
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six test tubes are placed in a rack. to all six tubes you add 1 ml of water. then 1 ml of serum is added to the first tube and mixed well. you then transfer 1 ml of that to the second tube and again mix well. you continue the transfer of 1 ml of mixture from one tube to each subsequent tube, finally discarding 1 ml from tube 6. what is the final dilution of serum contained in tube 6? sketch the process and show your calculations
The final dilution factor of serum contained in tube six is 64.
Dilution is the process of adding solvent to a solution. The concentration of the solution will change according to the equation
V₁ M₁ = V₂ M₂
where
V₁ = the volume before dilutionM₁ = the concentration before dilutionV₂ = the volume after dilutionM₂ = the concentration after dilutionThe dilution factor = M₂ ÷ M₁
The problem didn't give information the concentration of serum. Suppose the initial serum concentration is M.
In tube #1
1 mL serum M1 mL waterV total = 2 mLM₁ = the concentration in tube #11 × M = M₁ × 2In tube #2
1 mL mixture 0.5M1 mL water1 × 0.5M = M₂ × 2In tube #3
1 mL mixture 0.25M1 mL water1 × 0.25M = M₃ × 2In tube #4
1 mL mixture 0.125M1 mL water1 × 0.125M = M₄ × 2In tube #5
1 mL mixture 0.0625M1 mL water1 × 0.0625M = M₅ × 2In tube #6
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a 20.0-ml sample of hydrochloric acid (hcl) is titrated and found to react with 42.6 ml of 0.100 m naoh. what is the molarity of the hydrochloric acid solution?
The molarity of the hydrochloric acid solution in the reaction between NaOH and HCl, 1 mole of NaOH reacts with 1 mole of HCl. 1 NaOH + 1 HCl → 1 NaCl + 1 H2O (Mole ratio of NaOH to HCl is 1:1) • The concentration of the NaOH was 0.1 M, or 0.1 moles/liter.
What is molarity?
Molarity (M) is the quantity of a substance in a given extent of solution. Molarity is described because the quantity of moles of solute consistent with liter of solution. Molarity is likewise known as the molarity of a solution.
Therefore, The molarity of the hydrochloric acid solution in the reaction between NaOH and HCl, 1 mole of NaOH reacts with 1 mole of HCl. 1 NaOH + 1 HCl → 1 NaCl + 1 H2O (Mole ratio of NaOH to HCl is 1:1) • The concentration of the NaOH was 0.1 M, or 0.1 moles/liter.
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determine the nuclide that (a) undergoes electron capture to produce 7li, and (b) undergoes alpha decay to form 238u. (1 pt)
The nuclide that (a) 7 Be undergoes electron capture to produce 7li, and (b) 234 Th undergoes alpha decay to form 238u.
(a) The nuclide that undergoes electron capture to produce 7Li is 7Be. 7Be is a stable nuclide with atomic number 4 and mass number 7. It can undergo electron capture, in which one of its inner-shell electrons is captured by the nucleus, resulting in the formation of a new nuclide with one fewer protons and one fewer neutrons. In this case, 7Be captures an electron to form 7Li, which has atomic number 3 and mass number 7.
The general equation for the electron capture reaction is:
7Be + e- ---> 7Li + ν
where e- is an inner-shell electron, ν is a neutrino, and the arrow indicates the direction of the reaction.
(b) The nuclide that undergoes alpha decay to form 238U is 234Th.
234Th is a radioactive nuclide with atomic number 90 and mass number 234. It can undergo alpha decay, in which it emits an alpha particle (consisting of two protons and two neutrons) to form a new nuclide with two fewer protons and two fewer neutrons. In this case, 234Th undergoes alpha decay to form 238U, which has atomic number 92 and mass number 238.
The general equation for the alpha decay reaction is:
234Th ---> 238U + α
where α is an alpha particle and the arrow indicates the direction of the reaction.
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What are the abbreviations for a femtosecond, a gigaliter, and a decimeter, respectively? Enter the abbreviations, separated by commas.
The abbreviations of femtosecond is fs, gigaliter is GI and decimeter is dm.
In order to make them easier to write, the units for the metric system are frequently written as acronyms. The units listed below are abbreviated as follows:
The femtosecond is represented by the symbol fs, where 1 fs is equal to 1015 1015 of a second. A 1015 factor is denoted by the prefix femto-.
The gigaliter is referred to as Gl, and one Gl is equal to 109 109 liters. The prefix giga- denotes a 109 109 factor.
There are 10 decimeters (abbreviated as dm) for every meter, hence the name. 10 is denoted by the prefix deci-.
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For the gaseous equilibrium represented below, it is observed that greater amounts of PCl3 and Cl2 are produced as the temperature is increased. PCl5(g) ↔ PCl3(g) + Cl2(g) (c) If He gas is added to the original reaction mixture at constant volume and temperature, what will happen to the partial pressure of Cl2? Explain. (d) If the volume of the reaction mixture is decreased at a constant temperature to half the original volume, what will happen to the number of moles of Cl2 in the reaction vessel? Explain. Note: Briefly explain and answer c and d
For the gaseous equilibrium that is given, the following applies:
1. If He gas is added to the original reaction mixture at constant volume and temperature, the partial pressure of Cl₂ will decrease.
This is because the introduction of He gas at constant volume and temperature will result in an increase in pressure, hence equilibrium will shift to the left where there is a decrease in pressure.
2. If the volume of the reaction mixture is decreased at a constant temperature to half the original volume, the number of moles of Cl2 in the reaction vessel will increase.
This is because a decrease in the volume of the reaction mixture is decreased at a constant temperature will result in a shift in equilibrium to the right where there is an increase in volume.
What is an equilibrium reaction?An equilibrium reaction is a reaction in which the rate of the forward and backward reactions are the same.
The principle that guides equilibrium reactions is the L_e Chatelier's principle which states that equilibrium will shift to neutralize any changes imposed on an equilibrium reaction.
For example, a decrease in volume will favor the reaction side which results in an increase in volume.
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predict whether the so2 and so3 are polar or nonpolar molecules.
SO2 is polar and SO3 is non - polar because of substituent differences and especially because of geometry.
What are polar and non polar molecules?When things are different at each end then we call them as polar. Some molecules have both positive and negative ends, then we call them polar. If they don't have then we call them non-polar. Things that are polar attract and repel each other.
As SO2 is bent, therefore the dipoles do not cancel and the molecule is polar. The difference in electronegativity between sulfur and oxygen is enough for dipole moments to form but the geometry of sulfur trioxide cancels their effects, making the molecule a nonpolar.
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some polyprotic acids can form more than one salt depending on the number of h's that react with base. write the balanced net ionic reaction between koh and h2so4 (react both h's).
Some polyprotic acids can form more than one salt depending on the number of h's that react with base.
Hence, the balanced chemical equation is:
[tex]H_2SO_4+2KOH \to K_2SO_4+2H_2O[/tex]
This is an example of a double replacement (double displacement) reaction.
What are polyprotic acids?
Polyprotic Acid is a chemical that can donate more than one proton. Diprotic and Triprotic are two distinct varieties of polyprotic acid that can, respectively, donate two and three protons.Depending on how frequently dissociation takes place, polyprotic acids have a variety of dissociation constants, including Ka1, Ka2, Ka3, and equivalence points.Given its ability to provide an aqueous solution with two hydrogen atoms, sulfuric acid (H2SO4) is a polyprotic acid. In particular, the fact that sulfuric acid has two hydrogen atoms available makes it a diprotic acid.A triprotic acid is orthophosphoric acid (H3PO4).To know more about polyprotic acids, click the link given below:
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Draw lewis structure for C5H12
The Lewis structure for C5H12 looks like this:
H - C - H
| | |
H - C - H
| | |
H - C - H
A Lewis structure is a way of representing the covalent bonds in a molecule. To draw the Lewis structure for C5H12, we first need to determine the number of valence electrons in the molecule. The valence electrons are the electrons in the outermost energy level of an atom, and they are the ones involved in chemical bonds.
In the case of C5H12, carbon has four valence electrons and hydrogen has one. This means that the molecule has a total of 5 x 4 + 12 = 32 valence electrons.
To draw the Lewis structure, we start by placing the five carbon atoms in the center of the structure, forming a pentagon. We then connect each carbon atom to the other four using single bonds, which represent two electrons each. This accounts for 20 of the 32 valence electrons.
Next, we add the remaining 12 valence electrons by placing hydrogen atoms on the outside of the pentagon, one on each side. Each hydrogen atom forms a single bond with a carbon atom, accounting for the remaining 12 valence electrons.
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