one resonance structure of the nitrate ion is − o n oo the bond angles in this ion are 120°. is this observation consistent with the preceding discussion of the effect of multiple bonds on bond angles?
Answers
Yes, the observation of a bond angle of 120° in the nitrate ion (NO3-) is consistent with the effect of multiple bonds on bond angles.
In the nitrate ion, there are three oxygen atoms bonded to a central nitrogen atom. The bonding pattern can be represented by the resonance structure − O-N=O-O. This resonance structure indicates that the nitrogen atom forms a double bond with one oxygen atom and single bonds with the other two oxygen atoms.
The presence of the double bond in the nitrate ion affects the bond angles in the molecule. Double bonds have a stronger electron density than single bonds due to the sharing of more electrons. This increased electron density leads to greater electron repulsion, which causes the surrounding atoms to move apart from each other to minimize repulsive forces.
The repulsion between electron pairs results in a distortion of the bond angles in the nitrate ion. In this case, the bond angles around the central nitrogen atom are approximately 120°, deviating from the ideal tetrahedral angle of 109.5°. This is because the presence of the double bond pushes the adjacent oxygen atoms closer together, causing an increase in repulsion and resulting in a larger bond angle.
Therefore, the observation of a bond angle of 120° in the nitrate ion is consistent with the preceding discussion of the effect of multiple bonds on bond angles, where the presence of double bonds can cause deviations from the expected bond angles based on simple geometric considerations.
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Related Questions
Which statement describes a mixture of salt and water? Chose Correct answer
Homogeneous mixture: the parts are uniformly mixed
Heterogeneous mixture: the parts are uniformly mixed
Homogenous mixture: the parts are not uniformly mixes
Answers
Answer:
Homogeneous mixture is the answer for this
Cause and Effect: How did the motion of the puck change as the result of being hit?
Answers
Answer:
Describe Newton's first law of motion; Recognize friction as an external force ... as a hockey stick changes its state of rest; (b) a hockey puck is shown in motion; ... Newton's first law says that there must be a cause for any change in velocity (a ... The idea of cause and effect is crucial in accurately describing what happens in
Explanation:
Answer:
Describe Newton's first law of motion; Recognize friction as an external force ... as a hockey stick changes its state of rest; (b) a hockey puck is shown in motion; ... Newton's first law says that there must be a cause for any change in velocity (a ... The idea of cause and effect is crucial in accurately describing what happens in
Explanation:
How many hydrogen atoms are present in an alkene with 7 carbon atoms.
Answers
PLEASE HELP NEED ANSWER ASAP!!!!
Use 3 H2(g) + N2(g) <--> 2 NH3 (g) + 92.4 kJ
At equilibrium, if the hydrogen (H2) concentration is increased, the ammonia(NH3) concentration will
Select one:
a. decrease
b. shifts back and forth
c. increase
d. remain the same
Answers
Answer:
the correct answer is option A. decrease
The essential oil found in cloves, eugenol (shown below), can be isolated by steam distillation because it is insoluble in water and has a measurable vapor pressure at 100 degree C even though it has a much higher boiling point than water. Use data from the table to calculate the mass percent of eugenol in the distillate. mass percent of eugenol will be present in the distillate? Number 90 % Incorrect.The mass percent is the mass of eugenol divided by the combined masses of all components, expressed as a percentage. The number entered was calculated using molar masses instead of masses. The mass of any component can be found by multiplying its mole fraction by its molar mass.
Answers
The essential oil found in cloves, eugenol, can be isolated by steam distillation because it is insoluble in water and has a measurable vapor pressure at 100 degrees Celsius even though it has a much higher boiling point than water. In order to calculate the mass percent of eugenol in the distillate, the data from the table is required.
The given data is:
Component: Mass (g), Boiling Point (°C)Eugenol: 0.20, 248Water: 99.80, 100The mass percent of eugenol present in the distillate can be calculated as follows:
Calculate the mole fraction of eugenol:
mole fraction of eugenol = moles of eugenol / total moles moles of eugenol can be calculated by using the mass and molar mass of eugenol. moles of eugenol = mass of eugenol / molar mass of eugenol
the molar mass of eugenol = 164.2 g/mol
moles of eugenol = 0.20 g / 164.2 g/mol = 0.00122 molecules of water can be calculated using the mass and molar mass of water. moles of water = mass of water / molar mass of water
molar mass of water = 18.0 g/mol
moles of water = 99.80 g / 18.0 g/mol = 5.54 mol
total moles = 0.00122 mol + 5.54 mol = 5.54 mol
Calculate the mole fraction of eugenol: mole fraction of eugenol = 0.00122 mol / 5.54 mol = 0.00022Calculate the mass percent of eugenol: mass percent of eugenol = (mass of eugenol / total mass) x 100mass of eugenol = 0.20 g
total mass = 99.80 g mass percent of eugenol = (0.20 g / 99.80 g) x 100 = 0.20 %Therefore, the mass percent of eugenol in the distillate is 0.20%.
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Why can water birds drown if they still have detergent on their feathers?
Answers
A small, positively charged ball is moved close to a large, positively charged ball. Which describes how the small ball likely responds when it is released?
Answers
Answer:
It is repelled ( pushed away from the larger ball)
Explanation:
Like charges repel.
Opposites attract.
what are the major sources of crude oil
Answers
Explanation:
Crude oil is a naturally occurring fossil fuel - meaning it comes from the remains of dead organisms.
Crude oil is made up of a mixture of hydrocarbons - hydrogen and carbon atoms.
It exists in liquid form in underground reservoirs in the tiny spaces within sedimentary rocks. Or it can be found near the surface in oil sands.
It is often found alongside natural gas and saline water.
Crude oil is often interchangeably referred to as petroleum. This is because petroleum includes both the unrefined crude oil as well as refined petroleum products.
It is non-renewable - once it’s gone it’s gone and cannot be easily replaced.
I need help with this
Answers
71 milliliters if you are using milliliters. In chemistry, you measure from the bottom of the miniscus.
ethyl chloride (c2h5cl) can be used as a topical anesthetic, for example prior to giving a painful injection. when liquid ethyl chloride is sprayed on the skin, energy absorbed from the skin causes the liquid to evaporate. this numbs the injection site by quickly decreasing the skin temperature to near 0oc. how much heat (in kj) is required to evaporate 3.06 ml of ethyl chloride at 25oc?
Answers
the amount of heat required to evaporate 3.06 ml of ethyl chloride at 25°C is 1.30 kJ.
The first step in solving this problem is to calculate the amount of energy required to evaporate 3.06 ml of ethyl chloride. To do this, we need to know the heat of vaporization of ethyl chloride, which is 27.5 kJ/mol.
We can use the molar mass of ethyl chloride (64.5 g/mol) to convert 3.06 ml to moles, which is 0.0474 mol.
Next, we can use the heat of vaporization and the number of moles to calculate the energy required:
Energy = heat of vaporization x number of moles
Energy = 27.5 kJ/mol x 0.0474 mol
Energy = 1.30 kJ
Therefore, the amount of heat required to evaporate 3.06 ml of ethyl chloride at 25°C is 1.30 kJ.
Ethyl chloride (C2H5Cl) is a topical anesthetic, which can numb the skin when sprayed as a liquid. The energy absorbed during the evaporation process cools the skin, making it an effective anesthetic. To determine the heat (in kJ) required to evaporate 3.06 mL of ethyl chloride at 25°C, we need to consider the specific heat of vaporization, which is 26.4 kJ/mol for ethyl chloride.
First, convert 3.06 mL to moles by dividing the volume by the molar volume of ethyl chloride (62.5 g/mol and a density of 0.92 g/mL):
3.06 mL * 0.92 g/mL = 2.8152 g
2.8152 g / 62.5 g/mol = 0.04504 mol
Next, multiply the moles by the heat of vaporization:
0.04504 mol * 26.4 kJ/mol = 1.1891 kJ
So, 1.1891 kJ of heat is required to evaporate 3.06 mL of ethyl chloride at 25°C.
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If force = mass x acceleration, then what is the force of an object with a mass of 30 kg and an acceleration of 2.2 m/s2?
Answers
Answer:
66 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 30 × 2.2
We have the final answer as
66 NHope this helps you
Please Help!!!!!
7. If I initially have 4.0 L of a gas at a pressure of 1.1 atm, what will the volume be if I increase the pressure to 3.4 atm?
8. A toy balloon has an internal pressure of 1.05 atm and a volume of 5.0 L. If the temperature where the balloon is released is 200 C, what will happen to the volume when the balloon rises to an altitude where the pressure is 0.65 atm and the temperature is –150 C?
9. A small research submarine with a volume of 1.2 x 105 L has an internal pressure of 1.0 atm and an internal temperature of 150 C. If the submarine descends to a depth where the pressure is 150 atm and the temperature is 30 C, what will the volume of the gas inside be if the hull of the submarine breaks?
10. People who are angry sometimes say that they feel as if they’ll explode. If a calm person with a lung capacity of 3.5 liters and a body temperature of 360 C gets angry, what will the volume of the person’s lungs be if their temperature rises to 390 C. Based on this, do you think it’s likely they will explode?
Answers
Answer:
7. 1.29L
8. 4.29L
9. 855L
10. 3.53L
Explanation:
Magnesium ribbon reacts with an aqueous solution of copper(ll) chloride in a single-replacement reaction. Which are the products of the balanced net ionic equation for the reaction?
Answers
The reaction between magnesium metal and copper chloride produce magnesium chloride precipitate and copper. The net ionic equation of the reaction is given below:
\(\rm Mg(s) + 2Cl (aq) \rightarrow MgCl_{2} (s)\)
What is ionic equation?The ionic equation of a reaction shows all the ions participate in the reaction and their states specified in brackets. The net ionic equation represents the balanced charges in both side of ionic equation.
The balanced equation of the given reaction is written as follows:
\(\rm Mg(s) + CuCl_{2} (aq) \rightarrow MgCl_{2} (s) + Cu(aq)\)
Here, the copper ions are in aqueous state in both side of the reaction and they get cancelled in the net ionic equation.
Therefore, the net ionic equation represents the formation of the solid precipitate MgCl₂ as written in the reaction above.
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what is the molecular equation to AgNO3 (aq) + H2S(aq)?
Answers
There are two forms of chemical equations
Ion equation: written in ion form (as separated ions) which forms the net ionic equation after removing an ion spectator
Molecular equation: written in molecular form
2AgNO₃(aq) + H₂S(aq) ⇒ Ag₂S(s) + 2HNO₃(aq)
The above reaction can be included in a double replacement reaction⇒ an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product
It can be shown the existence of the precipitation reaction, which is the formation of insoluble Ag₂S (not dissolve)
can you add different elements in a chemical equation
Answers
Answer:
No.
Explanation: You cannot change the formulas of individual substances because the chemical formula for a given substance is characteristic of that substance.
Which statement best explains how the solution should be made? Add 49. 6 mL of 0. 250 M sucrose to 400. 0 mL of water to get 400. 0 mL of 0. 0310 M sucrose. Add 49. 6 mL of 0. 0310 M sucrose to 350. 4 mL of water to get 400. 0 mL of 0. 250 M sucrose. Add 49. 6 mL of 0. 250 M sucrose to 350. 4 mL of water to get 400. 0 mL of 0. 0310 M sucrose.
Answers
A mixture of 90.0grams of CH4 and 10.0grams of argon gas a pressure of 250torr under conditions of constant temperature and volume. The partial pressure of CH4 in torr is?
Answers
Answer:
The partial pressure of methane CH₄ is 239.4 torr.
14. The noble gases in Group 18 are very reactive. *
O True
O False
Answers
Answer: the answer is True
Explanation:
Which describes a way to speed up the collisions between calcium hydroxide and carbon dioxide molecules to produce calcium carbonate faster
Answers
Grinding the calcium hydroxide to a finer powder would speed up the collisions.
How can the collisions be accelerated?The reaction between calcium hydroxide and carbon dioxide to produce calcium carbonate is a slow process that requires the collision of calcium hydroxide and carbon dioxide molecules. In order to speed up the reaction rate, one approach is to increase the surface area of calcium hydroxide by using it in a powdered form, which increases the number of collisions with carbon dioxide molecules. Another way is to increase the concentration of carbon dioxide by pumping it into the reaction chamber at a higher pressure, which increases the number of collisions with calcium hydroxide molecules. Additionally, raising the temperature of the reaction can increase the kinetic energy of the molecules and promote collisions, leading to a faster reaction rate. Using a catalyst, such as a small amount of sodium chloride, can also enhance the reaction by lowering the activation energy needed for the reaction to occur. These approaches can help speed up the production of calcium carbonate from the reaction between calcium hydroxide and carbon dioxide.
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How is our modern understanding of atomic structure different from thomson plum pudding model?
Answers
The negatively charged electron in the plum pudding model, however, is smaller than an atom and is negatively charged.
How does the nuclear model of the Rutherford scattering experiment compare to the plum pudding model?Electrons with a negative charge were encased in a positive charge, or "soup," in Thomson's plum pudding atom model. Rutherford's experiment with gold foil demonstrated that the majority of an atom is made up of empty space, with a small, compact, positively-charged nucleus. Rutherford put forth the nuclear model of the atom in response to these findings.The atom is the lowest unit of matter according to the hard-sphere atom model, which is why the plum pudding atom model is distinct. The negatively charged electron in the plum pudding model, however, is smaller than an atom and is negatively charged.To learn more about plum pudding model refer to:
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Observations lead to questions. Good scientific questions need to be ___________.
straightforward
testable
inferred
spontaneous
Answers
Answer:
I think the answer would be 'testable'.
Draw the major product (or products) that would be obtained when these reacts with Cl2 and FeCl3. If two structures exist, draw them both. A. ethylbenzene b. anisole (methoxybenzene c. fluorobenzene d.benzoic acid e. nitrobenzene f. chlorobenzene g. ethyl phenyl ether is subjected to ring chlorination
Answers
Fluorobenzene the major product (or products) that would be obtained when these reacts with Cl2 and FeCl3 .
Electrophilic Aromatic Substitution:
The electrophilic aromatic substitution reactions involve displacement of a hydrogen atom from the aromatic ring by another electrophilic reagent.
These reactions can be halogenation, sulfonation, nitration, Friedel-Crafts alkylation, or Friedel-Crafts acylation.
Halogenation involves generation of a halonium ion which acts as an electrophile from a mixture of halogen molecule and the corresponding Lewis acid catalyst like FeX3 or AlX3.
Fluorobenzene has a fluorine substituent which is ring-deactivating and ortho and para-directing.
Thus, two products will be formed in the more vigorous conditions;
o-chloro, fluorobenzene and p-chloro, fluorobenzene.
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A gravel can be broken down into different kinds of substances by physical processes. No chemical reactions are needed to separate different parts of gravel into pure substances. This is because gravel is a(n)
compound
element
homogeneous mixture
heterogeneous mixture
Answers
answer:
heterogenous mixture
Explanation:
Gravels can be broken down into different kinds of substances by physical processes because they are heterogeneous mixtures.
Gravels are generally made from different rock fragments including sandstone, limestone, and basalt. The rock fragments can be sorted out by physical means.
In other words, gravels are mixtures of different rocks but the individual rocks still maintain their identities in the mixture. Such mixtures are known as heterogeneous mixtures.
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why should the concentration fo water be the same inside the cell and in the extracellular flid, at equillibrium
Answers
The concentration of water should be the same inside the cell and in the extracellular fluid at equilibrium because the water molecules move from a region of high concentration to a region of low concentration. This process is called osmosis. It is essential to maintain the same concentration of water inside and outside the cell.
In a living cell, water is the most abundant molecule, accounting for about 70% to 90% of the total cell volume. It is important to maintain the water balance inside the cell because a concentration gradient is necessary to support various cellular processes, such as the transport of nutrients, elimination of waste, and metabolism of energy.The maintenance of the concentration of water in the extracellular fluid is also essential because it ensures that the cells in the body are bathed in a fluid that is isotonic to their cytoplasm. If the extracellular fluid is hypotonic or hypertonic to the intracellular environment, it can cause osmotic imbalances, which can result in cell damage or death.A difference in the concentration of water inside and outside the cell can lead to the movement of water across the cell membrane. If there is a high concentration of water outside the cell, it will diffuse inside the cell, causing it to swell and eventually burst. Similarly, if the concentration of water inside the cell is higher, it will move outside, causing the cell to shrink and eventually die. Therefore, it is essential to maintain the same concentration of water inside and outside the cell.
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How many moles of LiCl do you need to make 0. 250 L of 0. 50 M solution?
Answers
We need 0.125 moles of LiCl to make a 0.50 M solution in 0.250 L of solution.
The volume of solution = 0. 250 L
Molarity of solution = 0. 50 M
A mole is described as the quantity of a substance that includes as many particles that are bonded together in a compound as there are atoms in exactly 12 g of carbon 12 isotope.
To find the number of moles of LiCl, we can use the formula:
moles of solute = concentration of solute * volume of solution
moles of LiCl = 0.50 mol/L x 0.250 L
moles of LiCl = 0.125 mol
Therefore, we can conclude that we need 0.125 moles of LiCl to make a 0.50 M solution in 0.250 L of solution.
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which mass wasting process has the slowest rate of movement?
Answers
The slowest mass wasting process is creep.
What is creep?Creep, a gradual and unhurried movement of soil or rock down an incline, ensues due to the relentless pull of gravity and the ceaseless cycle of freezing and thawing of water. This insidious process may transpire at such a languid pace that it eludes physical eye's scrutiny, yet over time, it can inflict significant harm upon structures and infrastructure.
Mass wasting, a natural phenomenon, can be further compounded by human activities. Alterations in land usage, such as deforestation and construction, have the potential to amplify the vulnerability to mass wasting. It is imperative to remain cognizant of the perils associated with mass wasting and adopt appropriate measures to mitigate these risks.
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Name the salts formed:
1. Magnesium + Nitric Acid
2. Calciuni + Hydrochloric acid
3. Zinc + Sulfuric acid
4. Iron + Sulfuric acid
5. Copper + Nitric Acid
Answers
Answer:
1)magnesium nitrate +hydrogen
2)calcium chlorine+hydrogen
3)zinc sulfate +hydrogen
Explanation:
hope it helps
please help!!!
Select the correct answer.
According to the valence bond theory, what kind of bond forms when valence atomic orbitals overlap with an unpaired electron?
A. covalent bond
B. sigma bond
C. pl bond
D. no bond
Answers
Answer:
A. covalent bond
Explanation:
Hope this helps out!
____ NaF + ____ Br2 à ____ NaBr + ____ F2
A. ---, 2, 2, ---
B. 2, ---, ---, 2
C. 2, ---, 2, ---
Answers
Answer:
2 NaF + Br2 --> 2NaBr + F2
Explanation:
Well first I notice that there are two flourines on the products side so we need to put a 2 of NaF. Now there are 2 sodiums on the products side so we have to put another two in front of NaBr.
2 NaF + Br2 --> 2NaBr + F2
2. What is an example of a molecule
with different types of atoms?
Answers
Answer:
a compound
Explanation:
A molecule with multiple atoms is compound like water it's made up of 1 oxygen and two hydrogen.
Water (H2O) and carbon dioxide are the example of a molecule
with different types of atoms.
What do you mean by atom and molecule ?Atoms are the tiny and basic units of matter which is composed of three subatomic particles such as positively charged protons, neutral Neutrons form nucleus at the the center of the atom.
A negatively charged electron which surround the nucleus of the atom, During chemical reaction the nucleus does not get affected except the nuclear reactions can change the nucleus.
In nucleus equal number of protons and neutron are present and atomic number is defined as the number of protons and atomic mass is the sum of protons and neutrons.
A molecule is formed by bonding of two or more atoms by different bonds like ionic, covalent, electrostatic, coordinate bonds, the atoms may be same or different types. Examples of molecules includes carbon dioxide, water, ammonia, glucose etc.
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