One name for this compound is O=CH3CH2-C-NH-CH2CH3

The ΔG for this reaction at 298 K is 50.98 kJ/mol. In terms of the spontaneity of the reaction at 298 K, it can be said that C. The system is spontaneous in the reverse direction.

To calculate ΔG for the reaction at 298 K, use the equation for the Gibbs free energy:
ΔG = ΔH - TΔS

In this case,
ΔH = 139.99 kJ/mol
ΔS = 298.7 J/(mol·K)
Temperature (T) = 298 K

First, convert ΔS to kJ/(mol·K) by dividing by 1000:
ΔS = 298.7 J/(mol·K) ÷ 1000 = 0.2987 kJ/(mol·K)

Now, plug in the values into the equation:
ΔG = 139.99 kJ/mol - (298 K × 0.2987 kJ/(mol·K))

ΔG = 139.99 kJ/mol - 89.01 kJ/mol
ΔG = 50.98 kJ/mol

Since ΔG > 0, the reaction is not spontaneous in the forward direction at 298 K. Therefore, the correct answer is:

C. The system is spontaneous in the reverse direction.

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For a gas C) 3 only  two variables are directly proportional to each other.

According to the ideal gas law, PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the gas constant, and T is temperature. Keeping all other conditions constant, the volume (V) and temperature (T) of an ideal gas are directly proportional to each other. This means that as the temperature increases, the volume of the gas will also increase proportionally. This relationship is known as Charles's Law. On the other hand, the number of moles (n) of gas in a container does not affect the volume-temperature relationship. Therefore, options 1 and 2 are incorrect, while option 3 is the correct answer. Answering in more than 100 words, understanding the relationship between variables in an ideal gas is important in many fields such as chemistry, physics, and engineering.
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Answer:

As this sheet of water moves on and off the beach, it can “capture” and transport beach sediment back out to sea. This process, known as “longshore drift,” can cause significant beach erosion.

Radioactive isotopes can be used in studies of metabolic pathways because they allow scientists to track the movement and transformation of molecules within biological systems.

Radioactive isotopes are atoms that contain an unstable nucleus and emit radiation as they decay. These isotopes can be incorporated into molecules involved in metabolic pathways, such as carbohydrates, proteins, or nucleic acids, by replacing a stable atom of the same element within the molecule.

One commonly used radioactive isotope in metabolic studies is carbon-14 (\(^{14}C\)), which is an isotope of carbon with six protons and eight neutrons. By substituting a stable carbon atom with \(^{14}C\) scientists can follow the molecule's journey through different metabolic reactions.

When a radioactive molecule enters a metabolic pathway, its behavior mirrors that of its stable counterpart. It undergoes the same biochemical transformations, reactions, and interactions.
However, because it emits radiation, it becomes detectable and measurable. This allows researchers to determine the location, concentration, and rate of the molecule's movement within the biological system.

Radioactive isotopes can provide detailed information about metabolic pathways. By analyzing the decay of the radioactive atoms, scientists can calculate the rate of specific reactions and the flux of molecules through different metabolic intermediates.
They can identify the points at which metabolic pathways branch or converge, and determine the relative importance of different metabolic routes. This information helps in understanding the regulation and dynamics of metabolic processes.

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The volume of gas when the pressure goes from 1.0 atm to 1.4 atm is 8,571.43 L.

When a car is driven into the river, it will implode due to the change in pressure. We are to calculate the volume of gas when the pressure goes from 1.0 atm to 1.4 atm if the internal volume of the car is 12,000 L.In order to solve the problem, we will use the combined gas law equation. The equation is given as follows;P1V1/T1 = P2V2/T2where P1 is the initial pressure, V1 is the initial volume, T1 is the initial temperature, P2 is the final pressure, V2 is the final volume, and T2 is the final temperature.We will assume that the initial temperature and final temperature are constant, and therefore, we can cancel them from the equation. Thus, the equation becomes;P1V1 = P2V2We can rearrange the equation to solve for V2 as follows;V2 = (P1V1)/P2Substituting the given values, we get;V2 = (1.0 atm * 12,000 L)/1.4 atmV2 = 8,571.43 L.

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Answer:

True

Metals above hydrogen in the reactivity series will displace hydrogen from acids, forming a salt and releasing hydrogen gas. Metals below hydrogen in the reactivity series are not reactive enough to displace hydrogen and will not react with acids to form hydrogen gas.

According to combined gas law:

\(P_{1}V_{1}/T_{1}=P_{2}V_{2}/T_{2}\)

So, given \(P_{1}=95kpa,V_{1}=4l,P_{2}=101kpa,V_{2}=6l,T_{2}=471k\)

After substituting values in the formula,

\(95*4/T_{1}=101*6/471\)

\(T_{1}=295k\)

What is the Combined Gas Law?

        PVT=k (k being the proportionality constant)

Thus, the original temperature is 295k.

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Answer:

Explanation:

Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy.

Answer:

Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy.

Explanation:

Answer:

An intermolecular force is the force of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions). Whereas the covalent bonds are the interatomic linkage that results from the sharing of an electron pair between two atoms.

Intermolecular forces hold molecules together in a liquid or solid. Intermolecular forces are generally much weaker than covalent bonds.

Answer:

Decreasing temperature

Explanation:

Just took the test

If the volume of the sealed balloon is decreased, then it is because of a decrease in the temperature. Thus, option b is correct.

The volume of the gas and the temperature show a direct relationship in accordance with the ideal gas equation. The increase or decrease in volume is directly affected by the temperature.

When the balloon is sealed no new volume of the oxygen or helium gas can be added nor the decrease in pressure will decrease the volume. But a decrease in temperature will decrease in volume as,

V  ∝ T

Therefore, option B. decreases the temperature decreases the volume.

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Answer:

48.018 g/mol

Explanation:

Answer:

The molar mass and molecular weight of CH2O2 is 46.025.

Explanation:

Answer:

Ans:

*Carbohydrates

*Proteins

*Cholesterol

Explanation:

The plasma membrane is a structure that has several distinct roles in the cell

The plasma membrane is mainly composed of the phospholipid Bilayer, which is a layer of two sheets located in the internal and external parts. The Phospholipids are said to be Amphipathic because they have both properties of Hydrophobic and hydrophilic

*The Carbohydrate Molecules attach to the Plasma Membrane such as to the lipids and Proteins:

when They attach to the Proteins, they are known as glycoproteins, and they help in cell recognition, when they attach to the lipids, they are known as Glycolipids

*Protein Molecules play an important role in transport system such as Carrier Proteins

*Cholesterol Molecules help in balancing the Fluidity of the plasma membrane

hope this was of use

Answer:

C

Explanation:

I believe there is more to the question . Bet the answer would be C

The mass number of the missing reactant in the above equation is 210.

A radioactive decay is any of the several processes by which unstable nuclei emit subatomic particles and/or ionizing radiation and disintegrate into one or more smaller nuclei.

According to this question, a radioactive sample undergoes alpha decay to form lead with mass number of 206.

The mass and atomic numbers of elements on both sides of the equation must be equal. Hence, to get the mass number of the reactant, we add 206 with 4 to get 210.

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Answer:

give answer of following questions and get 35 points.

A photon has an energy of 2.88 × 10⁻¹⁸ J. The energy into eV is 17.97 eV.

The energy which is carried by a single photon is called Photon energy.

It is expressed as:

E = hf

where,

E = Photon energy

h = Planck's energy

f = Wave frequency

To convert J into eV

E(eV) = E(J) × 6.241509 × 10¹⁸

         = 2.88 × 10⁻¹⁸ × 6.241509 × 10¹⁸

         = 17.97 eV

Thus from the above conclusion we can say that A photon has an energy of 2.88 × 10⁻¹⁸ J. The energy into eV is 17.97 eV.

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15.13g is the mass of sodium formate, nahco2, must be dissolved in 250.0 ml of 0.100 m formic acid (hco2h) to yield a buffer solution of ph. 3.88

The sodium salt of formic acid, HCOOH, is sodium formate, HCOONa. It typically appears as a fine, white powder. Since formic acid can be produced cheaply and in large quantities by carbonylating methanol and hydrolyzing the ensuing methyl formate, sodium formate is often made by neutralizing formic acid with sodium hydroxide. In the final phase of the production of pentaerythritol and in the crossing Cannizzaro reaction of formaldehyde with the aldol reaction result trimethylol acetaldehyde [3-hydroxy-2,2-bis(hydroxymethyl)propenal], sodium formate is also inevitably produced as a by-product.

pH = pKa + log [base/acid]

3.88 = 3.752 + log (x / 1)  {1 comes from the 1.00 M formic acid}

log x = 0.128

x = -0.89 M (molarity)

MV = g/molar mass

(0.89 mol/L) (0.250 L) = x / 68.0069 g/mol

x =  15.13 g

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Let's see

\(\\ \rm\Rrightarrow C_{12}H_{22}O_{11}\)

\(\\ \rm\Rrightarrow 12(12)+22(1)+11(16)\)

\(\\ \rm\Rrightarrow 144+22+176\)

\(\\ \rm\Rrightarrow 166+176\)

\(\\ \rm\Rrightarrow 342g/mol\)

Answer:

The correct answer is option 4.

Answer:

4 Gradual change of a species to be better suited for the environment

Explanation:

Answer:

C

Explanation:

The solution that will reach dynamic equilibrium is a saturated solution. The correct option is C.

A chemical solution in which the solute concentration is less than its equilibrium solubility is known as an unsaturated solution.

The solvent dissolves the entire solute.

When a solute (typically a solid) is mixed with a solvent (commonly a liquid), two reactions take place at the same time.

Thus, the correct option is C, the saturated solution.

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Replacement  I think, hope this helps ;)

Explanation:

Answer:

Replacement

Explanation:

To estimate the energy required to break all of the bonds in one mole of CH4, we need to consider the type of bond in CH4 and the energy required to break each bond. CH4 is a covalent compound consisting of one carbon atom and four hydrogen atoms.

The bonds between the carbon atom and each hydrogen atom are covalent bonds, which are strong bonds that require a lot of energy to break.
The energy required to break a bond depends on the strength of the bond, which is determined by the electronegativity of the atoms involved and the distance between the nuclei. The bond energy for the CH bond in CH4 is approximately 414 kJ/mol, while the bond energy for the CC bond in CH4 is negligible.
To calculate the energy required to break all of the bonds in one mole of CH4, we need to multiply the bond energy of each bond by the number of that type of bond in the molecule and add up the results. In this case, there are four CH bonds in CH4, so the energy required to break all of the bonds in one mole of CH4 is approximately 4 x 414 kJ/mol = 1656 kJ/mol.
Therefore, the energy required to break all of the bonds in one mole of CH4 is approximately 1656 kJ/mol.

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Answer:

There will be more collisions and so a greater pressure. The number of particles is proportional to pressure, if the volume of the container and the temperature remain constant. ... Volume is inversely proportional to pressure, if the number of particles and the temperature are constant.

Answer:

Isotopes of any given element all contain the same number of protons.

different number of mass

Answer: Protons and Neutrons

Explanation:

Answer:

A. The contraction of the triceps muscle causes the arm to flex

Explanation:

Because, the contraction of the triceps muscle causes the arm to flex and adds to the force of the biceps contracting it provides extra force to the ball for throwing.

Molecules are compounds that make covalent bonds between atom. In a covalent bond, the electrons from each atom invoved are shared between them, sticking the atoms together.

In ionic compounds, the electrons of each atoms are not shared, they are part of either of the ions. The ions sticke together because they are charged with opposite charges, so they attract each other.

So, ionic compounds are not considered individual molecules because they don't make covalent bonds, that is, their atoms don't shared electrons, they attract each other because of their opposite charges.

Answer: Inertia

Explanation:

Answer:

Ethanol

Explanation:

All four of these compounds are organic chemicals that occupy the capacity to withhold different intermolecular forces, commonly known as bonds. There are three main types of intermolecular forces, called London Dispersion, dipole dipole, and hydrogen bonding.

Hydrogen bonds are a different kind of dipole dipole bonding that is relatively strong and involves an electronegative atom (only Nitrogen, Oxygen, and Fluorine) causing a force of attraction with a Hydrogen.

Hydrogen bonds are created when there are partial positive charge on the Hydrogen atom, and a partial negative charge on the electronegative atom.

In other words, we are looking for a Hydrogen attached to a Nitrogen, Oxygen, or Fluorine.

◾ Ethanol's structure:                                                 \(\\~~~~~~~H~~~~H\\~~~~~~~~|~~~~~|\\H-C-C-O-H\\~~~~~~~~|~~~~~|\\~~~~~~~H~~~~H\\\)

      → A clear hydroxyl group (O-H) at the right hand side of the Lewis                     structure is shown, which means it possesses a hydrogen bond.

◾ Ethane's structure:                                                         \(\\~~~~~~~H~~~~H\\~~~~~~~~|~~~~~|\\H-C-C-H\\~~~~~~~~|~~~~~|\\~~~~~~~H~~~~H\\\)

      → Does not have any hydrogens attached to the electronegative atoms listed above. Therefore, this does not possess a hydrogen bond.

◾ Dimethyl ether's structure:                                    \(\\~~~~~~~H~~~~~~~~~~H\\~~~~~~~~|~~~~~~~~~~~~|\\H-C-O-C-H\\~~~~~~~~|~~~~~~~~~~~~|\\~~~~~~~H~~~~~~~~~~H\\\)

      → Has the necessary electronegative atom, which is the oxygen, inside the structure. However, it does not obtain any bonding through hydrogens and instead attaches to the carbons, concluding that dimethyl ether does not contain any hydrogen bonding.

◾ Ethylene's structure:                                                                    \(H~~~~H\\~~|~~~~~|\\~C=C\\~~|~~~~~|\\~H~~~H\\\)
      → Clearly not possessing an electronegative atom bonding with a hydrogen, therefore, does not have any hydrogen bonding.  

In summary, the only organic compound that contains a hydrogen bond is ethanol.

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5 seconds. 5x2=10.






(Don't know why you asked this here, the math is really simple)