when a(n) 870-kg compact car accelerates from rest to 29 m/s , it consumes 0.0726 l of gasoline, and 1.0 l of gasoline contains approximately 3.2×107 j of energy.

Answer:

Synthetic polymers are human-made polymers, and they are commonly found in a variety of consumer products. Various main chains and side chains are used to make different synthetic organic polymers.

Answer:

A scientific theory is a widely accepted belief on why something happens in the natural world while a scientific law is proven to a fact that shows what happens.

Explanation:

311 L is the volume that is  occupied by 500 g of fluorine gas at 5.00oC at a pressure of 735 Torr. Therefore, the correct option is option A.

The area that any three-dimensional solid occupies is known as its volume. These solids can take the form of a cube, cuboid, cone, cylinder, or sphere. Various forms have various volumes. We have studied the several solids and forms that are specified in three dimensions, such as cubes, cuboids, cylinders, cones, etc., in 3D geometry. We will discover how to find the volume for each of these shapes.

5.00°C + 273.15 = 278.15 K

735 Torr ÷ 760 Torr/atm = 0.967 atm

V = (nRT)/P

2 x 18.9984 g/mol = 37.9968 g/mol of \(F_2\)

n = (500 g) / (37.9968 g/mol)

 = 13.158 mol

V = (13.158 x 0.0821 x 278.15 ) / 0.967

V = 311 L

Therefore, the correct option is option A.

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Answer:

1

Explanation:

Because The Kinetic Energy Is Very similar to Potential Energy

Answer:

C

Explanation:

Fresh water fish need freshwater.

I uploaded the answer to a file hosting. Here's link:

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Answer:

I think its C

Explanation:

c

(a) The wavelength of the electron is 202.25885 nm

(b) The minimum energy required to remove the electron is 1.6565 × 10⁻¹⁷ J

(c) The wavelength of the causing radiation is approximately 8.84 nm

(d) X-ray

The question parameters are;

The given parameters of the electron are;

The velocity of the electron, v = 3.6 × 10³ km/s

(a) de Broglie wavelength is given as follows;

λ = h/(m·v)

Where;

λ = The wavelength of the wave

h = Planck's constant = 6.626 × 10⁻³⁴ J·s

m = The mass of the electron = 9.1 × 10⁻³¹ kg

Therefore, we get;

λ = 6.626 × 10⁻³⁴/(9.1 × 10⁻³¹ × 3.6 × 10⁶) = 202.25885 × 10⁻⁶

The wavelength, λ, of the electron is 202.25885 × 10⁻⁶ m = 202.25885 nm

(b) The energy required to remove the electron from the metal surface is known as the work function, W₀, which is given by the following formula

W₀ = h·f₀

Where;

f₀ = The threshold frequency

Given that the threshold frequency, f₀ = 2.50 × 10¹⁶ Hz, we have;

W₀ = 6.626 × 10⁻³⁴ J·s × 2.50 × 10¹⁶ Hz = 1.6565 × 10⁻¹⁷ J

The energy required to remove the electron from the metal surface, W₀ = 1.6565 × 10⁻¹⁷ J

(c) The wavelength of the radiation that caused the photoejection of the electron is given as follows;

The energy of the incoming photon, E = W₀ + (1/2)·m·v²

Where;

v = The velocity of the electron, and m = The mass of the electron

Therefore;

E = 1.6565 × 10⁻¹⁷ + (1/2) × 9.1 × 10⁻³¹ kg × (3.6 × 10⁶ m/s)² = 2.24618 × 10⁻¹⁷ J

We have;

E = h·f

∴ f = (2.24618 × 10⁻¹⁷ J)/(6.626 × 10⁻³⁴ J·s) = 3.38994869 × 10¹⁶ Hz

The speed of light, c = 299,792,458 m/s

From the equation for the speed of light, we have;

λ = c/f

∴ λ = (299,792,458 m/s)/(3.38994869 × 10¹⁶ Hz) = 8.84356919 nm ≈ 8.84 nm

The wavelength of the radiation that caused photoejection of the electron, λ\(_{causing \ radiation}\) ≈ 8.84 nm

(d) The kind of electromagnetic radiation used which has a wavelength of 8.84 nm is the X-Ray which are electromagnetic radiation having wavelengths that extend from 10 picometers to 10 nanometers.

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Answer:

ans is that

Explanation:

2hgo+cl2->2hgcl+o2

a. Due to the non-polar nature of CO2 molecules, London dispersion forces are the only intermolecular forces that may interact with them.

b. Due to the presence of a nitrogen atom with a single pair of electrons, NH3 molecules are polar and are capable of both hydrogen bonding and dipole-dipole interactions.

c. Due to their polar nature, HCl molecules are capable of both hydrogen bonding and dipole-dipole interactions.

d. Since C6H6 (benzene) molecules are non-polar, London dispersion forces are the only intermolecular forces that can act between them.

Answer:

\(\huge\bf\underline{\underline{\pink{A}\orange{N}\red{S}\green{W}\purple{E}\blue{R}}}\)

ONLY 20.95% IN THE AIR

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The three smaller components that make up atoms are neutrons, electrons and protons.

What is an atom?

An atom is the smallest particle of an element that still retains its chemical properties. Atoms consist of a small, dense nucleus surrounded by a cloud of negatively charged electrons. The nucleus is made up of protons and neutrons, and contains nearly all of the mass of the atom. The number of protons in an atom's nucleus determines the element it is.

The three smaller components that make up atoms are protons, neutrons, and electrons. Protons carry a positive charge and are found in the nucleus of an atom. Neutrons carry a neutral charge and are also found in the nucleus. Electrons carry a negative charge and are found in the electron cloud that surrounds the nucleus.

Therefore, neutrons, electrons and protons are the answers.

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Answer: Id answer it but i think your copy and paste got corrupted!

Explanation:

Answer:

Electrons are discharged by the positive ions on the skin surface.

Answer:

3.1 moles of ammonia

18.67× 10²³ molecules

Mass = 52.7 g

Explanation:

Given data:

Number of atoms of hydrogen = 5.68×10²⁴ atoms

A) Number of molecules of ammonia = ?

Solution:

First of all we will calculate the number of moles of hydrogen.

1 mole = 6.022× 10²³ atoms

5.68×10²⁴ atoms × 1 mol / 6.022× 10²³ atoms

0.94×10¹ mol

9.4 moles of hydrogen

Moles of ammonia:

3 moles of hydrogen are present in one mole of ammonia.

9.4 moles of hydrogen = 1/3×9.4 =

3.1 moles of ammonia

Number of molecules of ammonia:

1 mole contain 6.022× 10²³ molecules.

3.1 mol × 6.022× 10²³ molecules / 1 mol

18.67× 10²³ molecules

c) Mass of sample = ?

Mass = number of moles × molar mass

Mass = 3.1 moles × 17 g/mol

Mass = 52.7 g

Actuating mechanism is the dry-chemical fixed application method which

introduces a concentration of agent into a closed area.

The actuating mechanism is commonly used in piping systems and

involves the transport of a control member in automatic or remote control

systems.

The closed system makes manual navigation very difficult which is why the

actuating mechanism in automatic systems are usually used to make it less

tedious and accurate.

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Answer:

It causes no pollution.

It is less durable and very expensive.

Explanation:

Fuel Cell Vehicles are the vehicles which moves by using hydrogen gas to power an electric motor as compared to conventional vehicles that moves by burning of fossil fuels. There is no bad effect on the environment because Fuel Cell Vehicles cause no pollution like conventional vehicles. Due to less durable and very expensive, Fuel Cell Vehicles can't take the place of conventional vehicles because its higher price which is not affordable for the people.

Answer:

fuel cost and availability

vehicle cost and availability

domestic fuel sources

pollution

onboard fuel storage

fuel cell performance

Answer:

Look in explanation.

Explanation:

Mendeleev has ordered the elements based on increasing atomic mass, he has skipped some elements but assumed that they existed and managed to find the atomic mass of the "unknown" elements.

Mendeleev corrected some elements' known atomic masses and used the patterns in his table to anticipate the properties of elements he thought must exist but had yet to be discovered. To depict those unknown elements, he left blank spaces in his chart.

The periodic table is a tabular array of chemical elements organized by atomic number, beginning with hydrogen and progressing to oganesson, which has the highest atomic number.

An element's atomic number is the number of protons in the nucleus of an atom of that element.

Mendeleev adjusted the recognized atomic masses of certain elements and utilized the patterns in his chart to predict the composition of the sample he assumed must reside but that had yet to be unearthed.

He left blank spaces in his chart to represent those unknown elements.

Thus, this way, he predicted their atomic weights and chemical properties.

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Answer:

Percent composition = mass of element in the compound/mass of compound × 100

In this case, the mass of the compound is its molar mass.

Percent Composition of N in CO(NH2)2 (urea)

Molar mass CO(NH2)2 = 60.056 g/mol

Mass of N = 2×14.007 g/mol = 28.014 g/mol

%N: 28.014 g/mol/60.056 g/mol × 100 = 46.646%

Percent Composition of N in NH4NO3 (ammonium nitrate)

Molar mass of NH4NO3 = 80.044g/mol

Mass of N = 2×14.007 = 28.014 g/mol

%N: 28.014 g/mol/80.044 g/mol × 100 = 34.998%

Hope this helps, please let me know If I'm wrong.

We can estimate the probabilities of forming certain elements based on fission product yield distributions while it is not possible to precisely predict the elements that will form from a specific U-235 fission reaction with one neutron.

When a Uranium-235 atom (U-235) absorbs a neutron, it undergoes nuclear fission, which is a process where the nucleus splits into smaller nuclei, releasing energy and additional neutrons. The resulting elements formed from this reaction are called fission products.

Predicting the exact elements that will be formed from a specific fission reaction involving U-235 and one neutron is not straightforward. This is because the fission process is probabilistic, meaning the formation of specific elements is based on probabilities, not certainties.

However, scientists have identified certain fission product yield distributions, which give an idea of the likelihood of forming specific elements from the fission of U-235. These yield distributions are obtained through experimental data and theoretical models.

In summary, while it is not possible to precisely predict the elements that will form from a specific U-235 fission reaction with one neutron, we can estimate the probabilities of forming certain elements based on fission product yield distributions.

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The cause of the difference in energy between the two conformations of trans-1,4-dimethylcyclohexane is due to steric strain. Steric strain is the repulsion between atoms or groups of atoms that are in close proximity to one another.

In the case of trans-1,4-dimethylcyclohexane, the two methyl groups are located on opposite sides of the ring and are in close proximity to one another, causing steric strain and a higher energy conformation. This is twice the difference in methylcyclohexane because there are two methyl groups causing steric strain instead of just one.

The lower energy conformation of trans-1,4-dimethylcyclohexane has the two methyl groups further apart from each other, reducing the steric strain and resulting in a lower energy conformation.

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Motivation generally arises inside people as a consequence of their desire for a particular outcome or goal.

It can be influenced by a variety of factors, including personal values, beliefs, experiences, and external incentives. The consequences of achieving or failing to achieve a goal can also impact a person's motivation, as they may experience a sense of reward or disappointment depending on the outcome. Additionally, the support and encouragement of other people can play a significant role in boosting motivation and helping individuals stay on track towards their desired outcome.

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To solve this problem, we'll use the Beer-Lambert Law and the information given.

(a) According to the Beer-Lambert Law, the absorbance (A) is directly proportional to the concentration (c) of the absorbing species:

A = εlc

where A is the absorbance, ε is the molar absorptivity constant, l is the path length (in cm), and c is the concentration (in M).

Given:

Slope of the Beer's Law plot (εl) = 3.5 × \(10^3\)

Absorbance (A) = 0.700

Since we have a 1 cm path length, the slope (εl) is equal to the molar absorptivity constant (ε).

Substituting the values into the equation, we can calculate the equilibrium concentrations:

ε = \(3.5*10^3 M^{(-1)} cm^{(-1)}\)

A = 0.700

Using the Beer-Lambert Law equation, we can rearrange it to solve for the concentration (c):

c = A / (εl)

For Fe3+:

c(Fe3+) = A / (εl) = 0.700 / (3.5 × \(10^3\)) = 2 ×\(10^{(-4)}\) M

For SCN-:

c(SCN-) = A / (εl) = 0.700 / (3.5 × \(10^3\)) = 2 × 1\(0^{(-4)}\) M

For FeSCN2+:

Since FeSCN2+ is the product of the reaction between Fe3+ and SCN-, the concentration of FeSCN2+ at equilibrium will be zero until the reaction reaches equilibrium.

Therefore, the equilibrium concentrations are:

[Fe3+] = 2 × \(10^{(-4)}\) M

[SCN-] = 2 × \(10^{(-4)}\) M

[FeSCN2+] = 0 M

(b) To calculate the equilibrium constant (Keq), we'll use the equation:

Keq = ([FeSCN2+]) / ([Fe3+][SCN-])

Substituting the given values:

Keq = (0) / (\((2 * 10^{(-4)})^2\)) = 0

Therefore, Keq is equal to 0.

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Boiling water should be used to pre-warm both the stemless funnel and the filter paper because crystallization can occur at the funnel's opening and clog the lowest opening, preventing the filtrate's flow throughout the whole filtration process.

In the presence of concentrated hydrochloric acid, aniline can also be acetylated using acetic anhydride to produce acetanilide. Add acetic anhydride after dissolving aniline in hydrochloric acid, and mix thoroughly. Add water to the sodium acetate mixture.

Acetanilide is an artificial organic chemical that was first used in medicine in 1886 to treat fever. Soon after, its potency in reducing pain was established, and for decades, it was used instead of aspirin to treat common problems like headaches, menstrual cramps, and rheumatism.

Acetanilide is an artificial organic chemical that was first used in medicine in 1886 to treat fever. Soon after, its potency in reducing pain was established, and for decades, it was used instead of aspirin to treat common problems like headaches, menstrual cramps, and rheumatism. Because of the resonance systems that acetanilide suggests, it is a weak base. The substance serves as the basis for many medicinal capsules, including sulfanilamide, a topical antibacterial and antifungal drug.

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Answer:

alpha: atomic mass = 4

beta: mass of electron; positive charge

gamma: 100 percent energy; zero mass

positron: mass <1; unstable charge (+)

beta: electron emitted from the nucleus

Note: Mesons are particles composed of a quark and an antiquark and do not fit the descriptions provided.

According to the information of the graph we can infer that if the water were cooled to 5°C the reaction time would be close to 30 seconds.

To establish what would the reaction time be if the water were cooled to 5°C we have to analyze the information of the graph specially the trend. In this case, we have to take into account where are located the point that relate time and temperature.

In this case, the trend is more time with less temperature. So if the water were colled to 5°C, the time would be close to 30 seconds.

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The rate constant (k) of a second-order reaction is given by the formula k = 1/(concentration of reactant * time). In the given reaction 2NOBr → 2NO + Br2, the rate constant (k).

To find the concentration of NOBr at a specific time (t), we need to know the initial concentration of NOBr (usually denoted as [NOBr]0). The concentration of NOBr at time (t) can be calculated using the integrated rate law for a second-order reaction, which is given by the equation

[NOBr]t is the concentration of NOBr at time (t) and [NOBr]0 is the initial concentration of NOBr To calculate [NOBr]t, we need the values of [NOBr]0 and k. Unfortunately, the concentration of NOBr at time (t) is not provided in the question, so we cannot calculate it.

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Nitrogen returns to the atmosphere through a process called denitrification.

This process is a vital component of the nitrogen cycle, which consists of several stages that ensure the circulation and transformation of nitrogen between the atmosphere, living organisms, and the environment. Here's a step-by-step explanation of how denitrification occurs:

1. Nitrogen fixation: Atmospheric nitrogen (N2) is converted into ammonia (NH3) by nitrogen-fixing bacteria or during natural processes like lightning. This makes nitrogen available for plants to use.

2. Nitrification: Ammonia is then converted into nitrites (NO2-) and nitrates (NO3-) by nitrifying bacteria. These are more accessible forms of nitrogen for plant absorption.

3. Assimilation: Plants absorb the nitrites and nitrates through their roots, incorporating the nitrogen into their cells for the production of proteins, DNA, and other essential molecules.

4. Ammonification: When plants and animals die, decomposer organisms break down their organic matter, releasing nitrogen in the form of ammonia back into the soil.

5. Denitrification: Finally, denitrifying bacteria convert nitrates and nitrites in the soil back into nitrogen gas (N2), which is released into the atmosphere, completing the nitrogen cycle.

Denitrification is an essential process that helps maintain the balance of nitrogen in the environment and ensures that it is available to support the growth and reproduction of plants and other living organisms.

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Answer:

not goin to be rude but I don't even get the question??

Answer:

nitric acid + iron=iron+[nitric acid ] 2 hydrogen

The net ionic equation will be Fe → \(Fe^{2+}\).

The net ionic equation would be a chemical equation which only indicates the elements, compounds, as well as ions instantly involved in a chemical reaction.

The given chemical equation is:

HNO3+Fe → Fe(HNO3)2 +H2​

It can be written in term of ionic equation.

\(H^{+}\) + \(NO_{3}^{-}\)+Fe → \(Fe^{2+}\) + \(H^{+}\) + \(NO_{3}^{-}\)

Hydrogen ion and nitrate ion will be canceled each other.

Hence, the net ionic equation will be

Fe → \(Fe^{2+}\)

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Any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron is known as an oxidation-reduction reaction. The basic processes of life, such as photosynthesis, respiration, combustion, and corrosion or rusting, all depend on redox reactions.

What are examples of oxidation and reduction reactions?

An oxidation reaction is a process in which oxygen is acquired or hydrogen is destroyed. for instance, 2Cu+O2heats 2CuO Reduction reaction. Reduction reactions occur when either hydrogen or oxygen is acquired. CuO+H2heats Cu+H2O, for instance.

What kind of reaction is an oxidation example?

Initially, the word "oxidation" was used to refer to chemical processes in which an element reacts with oxygen. An illustration of this is the oxidation of magnesium in the formation of magnesium oxide when magnesium metal and oxygen react.

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In isomerization reaction, there is only structural rearrangement of all the bonds and atoms.

In group transfer reaction one atom from one substrate is transfer to other substrate point in the group transfer reaction given above, phosphate from ATP is transferred to substrate to convert it into product.

In oxidation reduction reaction, the gain and loss of electrons occur simultaneously. In the reaction given above NADH is Losing electrons which are gained by the substrate to form product.

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