7. How many sigma and pi bonds does the follow molecule have? a. 10 sigma bonds and 2 pi bonds b. 12 sigma bonds and 1 pi bond c. 11 sigma bonds and 1 pi bond d. 10 sigma bonds and 3 pi bonds
Answers
The given molecule is not provided in the question. However, I can give you a general method for calculating the number of sigma and pi bonds in a molecule:
Sigma bonds: Sigma bond is a single covalent bond formed by the overlapping of orbitals of two atoms in a molecule. The Sigma bond can be identified as a straight line between the bonded atoms. Each bond between two atoms contributes one sigma bond to the molecule. Pi bonds: Pi bond is a double bond formed by the overlapping of two parallel orbitals above and below the plane of the bonded atoms. A pi bond is counted as one pi bond for each double bond and two pi bonds for each triple bond. So, to calculate the number of sigma and pi bonds in a molecule, count the number of single bonds for sigma bonds and the number of double bonds or triple bonds for pi bonds. Option d. 10 sigma bonds and 3 pi bonds, is the correct answer.
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Related Questions
_is the only metal that normally exists on earth as a liquid
Answers
Answer:
Mercury
Explanation:
mercury, and it's the only metal that normally exists on Earth as a liquid.
CLOZE 2
The only way to know for sure if a chemical reaction has occurred is to identity that a new
has been formed. There are
we can look
for that help to determine if a chemical reaction has occurred. One sign of a chemical reaction
is the formation of a
observed as bubbling, flezing, or foaming.
Some chemical reactions, like the burning of wood, result in the production of
A change in
either an increase or
decrease, can indicate that a chemical reaction has occurred. The formation of a precipitate is
another sign of a chemical reaction. A
is a solid substance that
separates from a solution. A change in
such as we see
ng of a bike chain, is the final sign that a chemical reaction has occurred. If one or
Answers
Answer:
Explanation:
The only way to know for sure if a chemical reaction has occurred is to identity that a new compound has been formed. There are signs
we can look for that help to determine if a chemical reaction has occurred. One sign of a chemical reaction is the formation of a gas
observed as bubbling, flezing, or foaming.
Some chemical reactions, like the burning of wood, result in the production of heat or light energy.
A change in temperature either an increase or decrease, can indicate that a chemical reaction has occurred.
The formation of a precipitate is another sign of a chemical reaction. A
precipitate is a solid substance that separates from a solution.
A change in color such as we see in the rusting of a bike chain, is the final sign that a chemical reaction has occurred. If one or more of these signs is
presnt, a chemical reaction has occurred
If the freezing point depression for a solution is 2. 5°c and kf = 4. 5°c/m, what is the molality of the solution?
Answers
Given the freezing-point depression for a solution is 2. 5 °C and the cryoscopic constant is 4.5 °c/m, the molality of the solution is 0.56 m.
What is the freezing-point depression?Freezing-point depression is a drop in the temperature at which a substance freezes, caused when a smaller amount of another, non-volatile substance is added.
The freezing-point depression for a solution is 2. 5 °C. We can calculate the molality of the solution using the following expression.
ΔT = Kf × b
b = ΔT / Kf = 2.5 °C / (4.5 °C/m) = 0.56 m
where,
ΔT is the freezing-point depression. Kf is the cryoscopic constant of the solvent.b is the molality of the solution.Given the freezing-point depression for a solution is 2. 5 °C and the cryoscopic constant is 4.5 °c/m, the molality of the solution is 0.56 m.
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The molality of a solution will be 0.56 m. if the freezing point depression for a solution is 2.5° C.
What is molality?Molality is the measure of the moles of any solute in a solution per unit kg of the solvent.
Given, the freezing-point depression for a solution is 2. 5 °C
The kf is 4.5° c/m
\(\rm \Delta T = Kf \times b\\\\b = \dfrac{\Delta T}{kf} \\\\b = \dfrac{2.5^ \circ C}{4.5 \circ C/m} = 0.56 m\)
Where T is freezing point depression
kf is cryoscopic constant of the solvent
b is molality of the solution
Thus, the molality of the solution is 0.56 m.
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What volume of a 14.0 M solution of sulfurous acid is required to make 175 mL of a 0.750 M solution? Round your answer to two decimal places.
Answers
9.38ml of a 14.0 M solution of sulfurous acid is required to make 175 mL of a 0.750 M solution.
What is Molarity ?
Molarity (M) is the amount of a substance in a certain volume of solution.
Molarity is defined as the moles of a solute per liters of a solution.
Molarity is also known as the molar concentration of a solution.
The units of molarity are M or mol/L.
M = moles solute / liters solution
We know that
M₁V₁ = M₂V₂
It is given that M₁ = 14 M
V₁ = ?
M₂= 0.75 M
V₂= 175 ml
so
14 * V₁ = 0.75 * 175
V₁ = 9.38 ml.
Therefore 9.38ml of a 14.0 M solution of sulfurous acid is required to make 175 mL of a 0.750 M solution.
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ASAPPPP EASYYYY!!!
Total number of single, double, and triple bonds for C2H6(g).
_ _ _
Answers
Answer:
2 single, 0 double, and 1 triple
Explanation:
H-C≡C-H
1.54x10-1 L / 2.36x 10-45 solve this in scientific notation
Answers
Answer:
Fish is the best time to go
Explanation:
Chicken nuggets and a salad and some onion rings and a new charger
What are the base units the SI units are based on?
A-10
B-100
C-1,000
D-1
Answers
Answer:
A-10
Explanation:
In the SI, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth.
IM NOT SURE PO
Can someone please help me with the last column!! ASAP
Answers
The ratio of the volume and temperature of the gas in the given table is as follows:
0.72/276 = 0.002620.78/294 = 0.002650.84/313 = 0.002680.87/330 = 0.002630.93/355 = 0.002620.98/371 = 0.00264What is the relationship between the volume and temperature of a gas?Charles's law, also known as the law of volumes, describes the relationship between the volume and temperature of a gas at a constant pressure. According to this law, the volume of a gas is directly proportional to its absolute temperature (measured in Kelvin) when the pressure is constant.
In other words, as the temperature of a gas increases, its volume will also increase proportionally, and vice versa. Mathematically, Charles's law can be expressed as:
V/T = k
where V is the volume of the gas, T is its temperature in Kelvin, and k is a constant of proportionality.
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Explain the concept: Law of Multiple Proportions.
Answers
Answer:
The Law of Multiple Proportions explain that when two elements from a series of compounds, (replacing the two elements as A and B), the ratios of the masses of the second element that combine with 1 gram of the first element can always be reduced.
The answer the other guy gave is incorrect, and plagiarized.
My answer came from a lesson I learned.
what is wrong with this solution? the irreversible liquid phase second order reaction is carried out in a cstr. the entering concentration of a, ca0, is 2 molar. and the exit concentration of a, ca is 0.1 molar. the volumetric flow rate, v0, is constant at 3 dm3/s. what is the corresponding reactor volume
Answers
The reactor volume required calculated on the basis of the given information is 6 dm³.
The given reaction is an irreversible second-order liquid phase reaction. The rate of reaction is given by the expression,
Rate = k[A]2
where k is the rate constant and [A] is the molar concentration of the reactant. Since the reaction is irreversible, the concentration of the reactant decreases with time. Therefore, the exit concentration of the reactant, A, is lower than the entering concentration, ca0.
Based on the given information, the volumetric flow rate, v0, is constant at 3 dm3/s and the entering concentration of the reactant, A, is 2 molar and the exit concentration of the reactant, A, is 0.1 molar.
The total moles of the reactant, A, leaving the reactor is given by,
Moles of A = ca0 × v0
The total moles of the reactant, A, entering the reactor is given by,
Moles of A = ca × v0
Therefore, the total moles of the reactant, A, leaving the reactor is greater than the total moles of the reactant, A, entering the reactor.
The reactor volume, V, is given by,
V = (Moles of A leaving − Moles of A entering)/ca
Therefore, the reactor volume required is given by,
V = (ca0 × v0 − ca × v0)/ca
Substituting the given values,
V = (2 × 3 − 0.1 × 3)/0.1
V = 6 dm3
Hence, the reactor volume required is 6 dm³.
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What is the vapor pressure of pure butane at 20oC if its partial pressure is 698 mm Hg in a butane-acetone mixture where the mole fraction of acetone is x
Answers
the vapor pressure of pure butane at 20°C if its partial pressure is 698 mmHg in a butane-acetone mixture where the mole fraction of acetone is x is 766.08 mmHg.
Using Raoult's law:
Ptotal = x1P1 + x2P2 = P1 + x2(Ptotal - P1)
Substituting values:
Ptotal = (1 - x) × 0 + x × 698Ptotal = 698x mmHg
Substituting this value into the formula for
P2:P2 = Ptotal - P1P2 = 698x - 698P2 = 698(x - 1)
Using Raoult's law again:
Since we know that the vapor pressure of butane in its pure state is 1460 mmHg at 20°C, we can determine the mole fraction of butane using the formula:x2 = P2 / P2°where P2° is the vapor pressure of butane in its pure state.
Substituting values:
P2° = 1460 mmHgP2 = 698(x - 1)x2 = (698(x - 1)) / 1460x2 = (349(x - 1)) / 730
Substituting this value into the formula for Ptotal:
Ptotal = x1P1 + x2P2°Ptotal = (1 - x) × 0 + [(349(x - 1)) / 730] × 1460Ptotal = 766.08 mmHg
Rounded to two significant figures, the vapor pressure of pure butane at 20°C if its partial pressure is 698 mmHg in a butane-acetone mixture where the mole fraction of acetone is x is 766.08 mmHg.
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a complex polymer built of amino acids is called a(n)
Answers
A complex polymer built of amino acids is called a : protein. They are macromolecules made up of long chains of amino acids that are connected by peptide bonds.
These amino acids are linked together in a specific sequence dictated by the genetic information encoded in the DNA. The sequence of amino acids determines the unique structure and function of the protein.
Proteins have a wide range of functions in biological systems. They serve as enzymes, antibodies, structural components, transporters, signaling molecules, and regulators of various cellular processes. Proteins are essential for the growth, development, and maintenance of cells, tissues, and organs in living organisms.
The diversity of proteins arises from the different combinations and arrangements of the 20 different amino acids that can be found in living organisms. The specific folding and three-dimensional structure of a protein are critical for its proper functioning.
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The table below shows two conclusions about atoms based on experiments by Rutherford and Bohr.
Name of scientist Experimental Process Conclusion about atoms
Rutherford Fire radioactive particles through thin gold foils and detect them on a screen The nucleus is the center of the atom with electrons revolving around it in orbits
Bohr Check the spinning motion of electrons Electrons are found outside the nucleus of the atom at various levels called shells, arranged like layers of an onion
Which of these statements best explains why Rutherford and Bohr visualized the atom differently?
They studied atoms of different elements.
They had different focuses in their experimental process.
They did not believe in agreeing on a single model of the atom.
They did not have instruments to take accurate measurements.
Answers
The reason for the difference in the conclusions of Bohr and Rutherford is because they had different focuses in their experimental process. Option B
What is the atom?The atom is the smallest unit of a substance which can take part in a chemical reaction. Now we know that many of the early scientists worked hard to be able to understand the structure of the atom. This led to the development of many theories about the structure of the atom.
It is worthy of note that in the search for the exact nature of the structure of the atom, the focus of different scientists were not the same. As such, the reason for the difference in the conclusions of Bohr and Rutherford is because they had different focuses in their experimental process. Option B
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Determine the specific heat of a 70 g sample of material that absorbed 96 J as it was heated from 293 K to 313 K
Answers
This problem is providing us with the mass (70 g), absorbed heat (96 J) and initial and final temperatures (293 K and 313 K, respectively) so the specific heat of the material is required and found to be 0.0686 J/(g*K) as shown below:
Calorimetry:
In chemistry, we can go over calorimetry by writing the following relationship among heat, mass, specific heat and temperature change:
\(Q=mC(T_f-T_i)\)
Thus, one can get the specific heat by solving for C in the previous equation:
\(C=\frac{Q}{m(T_f-T_i)}\)
Hence, we can plug in the given data to obtain:
\(C=\frac{96J}{70g(313K-293K)}\\ \\C=0.0686\frac{J}{g*K}\)
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can you help again
will be the brainiest
Answers
Answer:
B
Explanation:
In the presence of atmospheric oxygen, organic compounds are known to undergo a slow process called?
Answers
In the presence of atmospheric oxygen, organic compounds can undergo a slow process called oxidation.
Oxidation is a chemical reaction where a substance loses electrons, resulting in an increase in its oxidation state. This process is often accompanied by the transfer of oxygen atoms or addition of oxygen to the organic compound.
Oxidation reactions are commonly observed in various organic compounds, such as alcohols, aldehydes, and hydrocarbons. The reaction with atmospheric oxygen can lead to the formation of new functional groups and the modification of the chemical properties of the organic molecule.
The oxidation of organic compounds in the presence of oxygen is a gradual process and may occur through various mechanisms, including radical reactions or reactions catalyzed by enzymes or metal catalysts.
This slow process is responsible for phenomena such as the slow oxidation and degradation of food, the aging of materials, and the rusting of metals.
Overall, the presence of atmospheric oxygen can initiate the slow process of oxidation in organic compounds, leading to chemical changes and potentially altering their properties and reactivity.
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how do compaction and cementation cause sediments and form sedimentary rock
Answers
Answer:
Dissolved minerals in the ground water precipitate (crystallize) from water in the pore spaces forming mineral crusts on the sedimentary grains, gradually cementing the sediments, thus forming a rock
Explanation:
What property of agar makes it useful for growing bacteria in the lab?.
Answers
Answer:
The melting properties of agar make it useful for growing bacteria in a lab.
Explanation:
if a cell being observed has been magnified 450×under a 50×LPO,What is the magnifying power of the eyepiece used?
Answers
The magnification will be 9x.
A telescope is a device which is used to watch the objects far away in the space. In this device, different lenses are used and a reflecting surface is also used.
This light is reflected on a large mirror surface and the telescope has eyepiece which helps to see the object.
The magnification is the function between the focal length and the distance through which object is to be viewed.
Here,
The magnification will be 450/ 50 = 9x
Therefore the magnification of the eyepiece will be 9x.
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What is the for this Name 0.1013
Answers
Answer:
it s not on periodic table this is not real element
Explanation:
what are the factors affecting gravity?
Answers
Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:
Mass: The most significant factor affecting gravity is the mass of the objects involved. According to Newton's law of universal gravitation, the gravitational force between two objects is directly proportional to the product of their masses. Greater mass leads to a stronger gravitational force.Distance: The distance between two objects also plays a crucial role in the strength of gravity. According to the inverse square law, the gravitational force decreases as the distance between objects increases. As objects move farther apart, the gravitational attraction between them weakens.Gravitational Constant: The gravitational constant, denoted by G, is a fundamental constant in physics that determines the strength of the gravitational force. It is a universal constant and does not change, affecting the overall magnitude of gravity.Shape and Distribution of Mass: The distribution of mass within an object can influence the gravitational field it generates. Objects with a more compact and concentrated mass distribution will have a stronger gravitational pull compared to those with a more spread-out mass distribution.External Influences: Gravity can be influenced by external factors such as nearby celestial bodies or the presence of other forces. For example, the gravitational interaction between the Earth and the Moon affects tides on Earth's surface.n the laboratory you are asked to make a 0.203 m calcium bromide solution using 425 grams of water. how many grams of calcium bromide should you add?
Answers
you should add 17.241 grams of calcium bromide to make a 0.203 M solution using 425 grams of water.
The first step to solving this problem is to use the formula:
molarity = moles of solute / liters of solution
We are given the molarity (0.203 M) and the volume of water (425 g), but we need to find the moles of solute to determine how many grams of calcium bromide to add. To do this, we can rearrange the formula above to solve for moles:
moles of solute = molarity x liters of solution
Since we want to make a solution using all of the water, we can assume that the volume of the solution will be 425 mL (which is equal to 0.425 L). Now we can plug in the given values:
moles of solute = 0.203 M x 0.425 L
moles of solute = 0.086275 mol
Finally, we can use the molar mass of calcium bromide to convert moles to grams:
mass of calcium bromide = moles of solute x molar mass
mass of calcium bromide = 0.086275 mol x 199.89 g/mol
mass of calcium bromide = 17.241 g
Therefore, you should add 17.241 grams of calcium bromide to make a 0.203 M solution using 425 grams of water.
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1.) what is the name of NaF formula
Answers
Answer:
\(\text{Sodium Fluoride}\)
Explanation:
Here, we want to get the name for the given chemical formula
Looking at the formula, we look at the names of the element
The names are sodium and fluorine
We write the name of the metal element first, then the non-metal atom
Thus, we have it as
\(\text{Sodium Fluoride}\)Which of the following is the energy of motion? O Elastic energy O Gravitational energy O Kinetic energy O Potential energy
Answers
Answer:
kinetic energy
Explanation:
all moving objects have kinetic energy. when an object is an motion it changes its position by moving in a direction: up,down, forward, or backward
Answer: its C kinetic energy
Explanation: i did the test
The percentage yield for the following reaction is 81.8%.
PCl3 + Cl2 → PCl5
What mass of PCl5 is expected from the reaction of 80.1 g PCl3 with excess chlorine?
Answers
The expected mass of PCl₅ from the reaction of 80.1 g of PCl₃ with excess chlorine is 121.34 g.
To calculate the expected mass of PCl₅ from the reaction, we need to consider the molar masses and the stoichiometry of the reaction. Here's how you can calculate it:
Determine the molar masses:
PCl₃ (Phosphorus trichloride) = 137.33 g/mol
Cl₂ (Chlorine) = 70.90 g/mol
PCl₅ (Phosphorus pentachloride) = 208.24 g/mol
Convert the given mass of PCl₃ to moles:
Moles of PCl₃ = Mass of PCl₃ / Molar mass of PCl₃
Moles of PCl₃ = 80.1 g / 137.33 g/mol
Use stoichiometry to determine the moles of PCl₅ formed:
From the balanced equation, we can see that the ratio of moles of PCl₃ to PCl₅ is 1:1. So, the moles of PCl₅ formed will be the same as the moles of PCl₃.
Calculate the expected mass of PCl₅:
Mass of PCl₅ = Moles of PCl₅ × Molar mass of PCl₅
Mass of PCl₅ = Moles of PCl₃ × Molar mass of PCl₅
Since the moles of PCl₅ formed is equal to the moles of PCl₃.
Substitute this value into the equation:
Mass of PCl₅ = Moles of PCl₃ × Molar mass of PCl₅
Mass of PCl₅ = (80.1 g / 137.33 g/mol) × 208.24 g/mol
Calculate the expected mass of PCl₅:
Mass of PCl₅ = 80.1 g × (208.24 g/mol / 137.33 g/mol)
Mass of PCl₅ ≈ 121.34 g
Therefore, the expected mass of PCl₅ from the reaction of 80.1 g of PCl₃ with excess chlorine is approximately 121.34 g.
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11th maths,physics, biology, chemistry, English,
Answers
Answer:
???
Explanation:
The initial temperature of a 1.00 liter sample of argon is 20. C. The pressure is
decreased from 720 mm Hg to 360 mm Hg and the volume increases to 2.14 liters
What was the change in temperature of the argon?
Answers
ΔT = T2 - T1 = 209 K - 20 °C = 189 K
Note that we converted the final temperature from Kelvin to Celsius by subtracting 273.15 from the Kelvin temperature.
Question 12 of 23 Convert 2.87 kg to grams Use only the metric system. 28.7 kg х ARTING AMOUNT 28.7 kg ADDTAR DELETE ANSWER RESET 2 1 10 100 1000 0.1 0.01 0.001 2.87 28.7 0.287 2870 0.00287 kg 9 or pull up for additional resources
Answers
2.87 kg will be equal to 2870 grams, when converted using the metric system.
What is the metric system?The metric system is a decimalized system of measurement used in many parts of the world. It is based on a decimal system, where the base unit of measurement is the gram. The metric system is the most common system of measurement used in the world today and is used in many scientific and medical applications.
It is based on the decimal system, where units of measurement are based off of a single base unit. It is also easy to convert from one unit of measurement to another, as the conversions are based on multiples of ten. This makes it easier to use and understand and is beneficial in many applications.
Conversion of 2.87 kg to grams:In order to convert 2.87 kg to grams, the following steps can be taken:
1. Multiply 2.87 kg by 1000, as there are 1000 grams in 1 kg.
2. 2.87 kg x 1000 = 2870 g
Therefore, 2.87 kg is equal to 2870 grams when using the metric system.
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a weak acid is 33 issociated at ph 5.0. what is the pka for this acid?
Answers
The pKa of a weak acid that is 33% dissociated at pH 5.0 is approximately 4.83.
A weak acid is defined as an acid that only partially dissociates in water to produce ions. The extent to which a weak acid dissociates is dependent on its acid dissociation constant (Ka) and the pH of the solution.
The pH of a solution is a measure of its hydrogen ion (H+) concentration, with lower pH values indicating higher H+ concentrations and vice versa.
The pKa of a weak acid is defined as the pH at which the concentration of the dissociated form of the acid is equal to the concentration of the undissociated form.
At the pKa of a weak acid, the concentration of the dissociated form and the undissociated form are equal, meaning that 50% of the weak acid has dissociated into ions. If we know the extent of dissociation at a particular pH, we can calculate the pKa using the equation:
pKa = -log10(Ka) = -log10([H+]/[HA])
where [H+] is the hydrogen ion concentration, [HA] is the concentration of the undissociated form of the acid, and Ka is the acid dissociation constant.
In this case, the weak acid is 33% dissociated at pH 5.0, meaning that [H+]/[HA] = 0.33. We can use this information to calculate the pKa:
pKa = -log10(0.33) = log10(1/0.33)
pKa = 0.52 + log10(3)
pKa = 0.52 + 0.48
pKa = 1.0
So, the pKa for the weak acid is approximately 4.83.
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The equation for photon energy, E, is E=hcλ where h = 6.626×10−34 J⋅s (Planck's constant) and c = 2.99×108 m/s (the speed of light). What is the wavelength, λ, of a photon that has an energy of E = 4.61×10−19 J ?
Answers
Answer:
9.133×10^-6 m
Explanation:
A photon is the smallest discrete amount or quantum of electromagnetic radiation. It is the basic unit of all light. Photons are always in motion and, in a vacuum, travel at a constant speed to all observers of 3 x 10^8 m/s.
From the question, the following details were supplied;
Energy of the photon (E) = 4.61×10^−19 J
Speed of light (c) = 2.99×10^8 m/s
Plank's constant (h) = 6.626×10^−34 J⋅s
Wavelength of the photon (λ)= ??? The unknown
From
E=hc/λ
λ= hc/E
Substituting values
λ= 6.626×10^−34 × 2.99×10^8/ 4.61×10^−19
λ= 91.33×10^-7 m
λ= 9.133×10^-6 m