The van der waals equation is a modification of the ideal gas equation. What two factors does this equation account for?.

Answer: 4 ATP molecules is produced in the glycolysis of 2 glucose molecules

The first stage of most carbohydrate catabolism, which is described as the breakdown of larger molecules into smaller ones, is glycolysis, which is a part of cellular respiration. Two Greek words that mean "to break down anything sweet" are the source of the word glycolysis. Two molecules of ATP are created during the breakdown of glucose and formation of pyruvate during glycolysis.

Explanation:

2 ATP are produced.

For every glucose molecule, meaning that for every 2 glucose molecules, 4 ATP will be created.

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Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 25 \times {2.5}^{2} \\ = 12.5 \times 6.25 \\ = 78.125 \: \: \: \: \: \: \: \: \)

We have the final answer as

Hope this helps you

Answer:

Mechanical

Explanation:

Since, this mechanical energy gets converted into thermal energy due to which hairs get dry. Thus, we can conclude that the energy transformation that occurs when a hair dryer is plugged in and turned on is that electrical energy transforms into mechanical and thermal energy.

The phase particles are directly dependent on all of these EXCEPT

Viscosity.

A phase is a discrete and uniform state of a system without a clearly defined boundary dividing it into constituent components. Whatever the ratios you employ, water and alcohol are completely miscible when combined. There is only one phase in the resulting combination (a solution). The boundary between water and oil, which ordinarily are immiscible and form a two-phase system, is apparent. Sometimes it is difficult to "see" the border, and you must use scientific reasoning to determine the system's number of phases. Phase and viscosity have no connection. It's connected to the other three. The resistance of a fluid (liquid or gas) to a change in shape or motion of adjacent sections relative to one another is known as viscosity. Viscosity is a sign of disagreement.

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The exponential decay rate for healthy human body is 0.1155 and the time taken  by 94% of the chemical consumed by the body to leave is 11.5 hours.

a) The exponential decay rate, often denoted as λ (lambda), can be calculated using the formula:

\(\lambda = \dfrac{ ln(2)} {t^{\frac{1}{2}}}\)

where ln represents the natural logarithm and \(t^\frac{1}{2}\) is the half-life of the chemical.

Substituting the given half-life value:

λ = ln(2) / 6

Using a calculator, we find:

λ ≈ 0.1155

So, the exponential decay rate is approximately 0.1155.

b) To calculate the time it takes for 94% of the chemical to leave the body, we can use the formula for exponential decay:

\(N(t) = N_{o} \times e^{-\lambda t}\)

where N(t) is the amount of chemical remaining at time t, N₀ is the initial amount of chemical, λ is the decay rate, and t is the time elapsed.

We want to find the time at which N(t) is 94% of N₀, which means:

0.94N₀ = N₀ \(\times e^{-\lambda t}\)

Cancelling out N₀:

0.94 = \(e^{-\lambda t}\)

Taking the natural logarithm of both sides:

ln(0.94) = -λt

Substituting the value of λ we found earlier:

ln(0.94) = -0.1155t

Now, solving for t:

t = ln(0.94) / -0.1155

solving the above equation, we get:

t ≈ 11.46

Therefore, the exponential decay rate for healthy human body is 0.1155 and it will take approximately 11.5 hours for 94% of the chemical consumed to leave the body.

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Complete question: The half-life of a certain chemical in the human body for a healthy adult is approximately 6 hr. a)What is the exponential decay rate b How long will it take 94% of the chemical consumed to leave the body?

Answer: D. 7.71 x 10^24

Explanation:

12.8 moles CO2 (6.02 * 10^23 molecules / 1 mol) = 7.7 * 10^24 molecules :)

Answer:

See attached.

Explanation:

The distance and the displacement are the measurements of the object that traveled. The distance traveled by the rolling car is 5 m and the displacement is 5 m downwards.

Distance has been the area covered by the object from the initial to the final point it has no directions. It estimates the points from where the object moved to reach the destination. The distance traveled is calculated as:

Distance = 20 m  - 15 m

D = 5 m

The displacement is the overall movement and change in the position of the object irrespective of the area covered. It is a vector quantity and is measured as:

D = Δx

D = X₂ - X₁

D = 20 m - 15 m

D = 5 m downwards

Therefore, the displacement of the car is 5 meters downwards and the distance is 5 meters.

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Approximately 3.844 grams of N2 are produced from the reaction of 9.35 g of H2O2 and 5.19 g of N2H4.

We need to first write the balanced chemical equation for the reaction:
2 H2O2 + N2H4 -> 3 H2O + N2
From the balanced equation, we can see that 2 moles of H2O2 react with 1 mole of N2H4 to produce 1 mole of N2.
Now, let's calculate the number of moles of H2O2 and N2H4 given their respective masses:
Molar mass of H2O2 = 34.0147 g/mol
Molar mass of N2H4 = 32.0468 g/mol

Number of moles of H2O2 = 9.35 g / 34.0147 g/mol
Number of moles of N2H4 = 5.19 g / 32.0468 g/mol

Now, using the mole ratio from the balanced equation, we can calculate the number of moles of N2 produced:
Number of moles of N2 = (Number of moles of H2O2) * (1 mole of N2 / 2 moles of H2O2)
                     = (Number of moles of H2O2) / 2

Number of moles of N2 = 9.35 g / 34.0147 g/mol / 2
                    = 0.1372 mol

Finally, to determine the number of grams of N2 produced, we multiply the number of moles by the molar mass of N2:

Number of grams of N2 = (Number of moles of N2) * (molar mass of N2)
                    = 0.1372 mol * 28.0134 g/mol
                    = 3.844 g

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Answer: Li2O would produce a basic solution.

Explanation:

Li makes LiOH and is a strong base which means it does not hydrolyze and creates a neutral ion. O2 is then shown as the weak acid, making it a conjugate base. Neutral + Basic = Basic soltuion

Therefore, 3.37 grams of oxygen reacted over time to produce 10.2 grams of rust from 5.9 grams of iron.

A reaction is a process in which one or more substances (reactants) are transformed into one or more different substances (products), with the breaking and formation of chemical bonds. During a reaction, atoms are rearranged, but no atoms are created or destroyed, in accordance with the law of conservation of mass. Reactions can occur through a variety of mechanisms, such as through the transfer of electrons (redox reactions), the exchange of ions (acid-base reactions), or the rearrangement of molecules (isomerization reactions). Reactions can be initiated by many factors, including changes in temperature, pressure, concentration, or the presence of a catalyst. Chemical reactions are essential for life, as they are involved in a wide range of processes such as digestion, respiration, and photosynthesis. In addition, reactions play a crucial role in the production of many materials and products, from medicines to electronics.

Here,

We can use stoichiometry to determine how much oxygen reacted to produce 10.2 grams of rust (Fe2O3) from 5.9 grams of iron (Fe).

From the balanced chemical equation:

1 mole of Fe reacts with 1 mole of O2 to produce 1 mole of Fe2O3

Molar mass of Fe = 55.85 g/mol

Molar mass of Fe2O3 = 159.69 g/mol

First, we need to calculate the number of moles of Fe that reacted:

5.9 g Fe x (1 mol Fe / 55.85 g Fe) = 0.1054 mol Fe

Since 1 mole of Fe2O3 is produced from 1 mole of O2, the number of moles of O2 that reacted is also 0.1054 mol.

Next, we can calculate the mass of oxygen that reacted:

0.1054 mol O2 x (32.00 g O2 / 1 mol O2) = 3.37 g O2

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Answer:

Gold Iron Titanium Lithium

Explanation:

Answer:

Cm2 Is not a unit of volume.

Explanation:

Hope this helps!

Please mark as brainliest if correct!

Answer:

it would be immiscible

Explanation:

They would not mix similar to oil and water

The answer is true

hope this helps :)

Answer:

One joule of work is defined as the amount of energy required to move an object one meter in the direction of the applied force. Work is a measure of the energy transfer that occurs when a force acts on an object and moves it over a distance.

A rotating fan and stretched rubber both contain kinetic energy and potential energy.

rotating fan has kinetic energy

Stretched rubber, on the other hand, has potential energy due to its elasticity.

The volume of the coin is 0.3 cm³ (rounded).

Generally every three-dimensional object occupies some amount of space. This space is always measured in terms of its volume. Volume is basically defined as the space that is occupied within the boundaries of an object present in three-dimensional space. Volume is also commonly known as the capacity of the object or the amount of the substance that it can hold.

d = 1.9 cm

t = 0.1

Volume of the coin = 1/4 πd²t

Substituting the values,

Volume of the coin = 1/4 × 3.14 × (1.9)² × 0.1

Volume of the coin = 0.283 = 0.3 cm³

Hence, the volume of the coin is 0.3 cm³ (rounded).

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The bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5

Bond order is defined as the number of electrons in bonding molecular orbitals minus the number of electrons in antibonding molecular orbitals divided by two. As a result, we may determine the bond order of this diatomic particle by the formula: Bond order = (number of bonding electrons - number of antibonding electrons) / 2

Bond order = (8 - 5) / 2

Bond order = 1.5.

This diatomic molecule, according to the bond order, is a stable molecule since the bond order is greater than 1, indicating that it is a double bond. The molecule has an overall bond strength that is greater than a single bond, but not as strong as a triple bond. So therefore he bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5

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The number of electrons, protons, and neutrons in argon is 18, 18 , and 22 respectively, the number of electrons , protons and neutrons in sulphur-32 is 16, 16, 16 respectively. The number of protons, neutrons, and electrons are 6 , 8 and 6. And for uranium-238 , 92 protons , 92 electrons and 146 neutrons.

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Give a handwritten explanation and response. Estimate the expected melting temperature of cadmium (Cd), vanadium, and other elements based on the patterns you have found.

What does melting point mean?

The temperature at which a pure substance's solid and liquid states can coexist in equilibrium is known as the melting point. A solid's temperature will rise when heat is added to it until its melting point is reached.

How do melting and boiling points differ?

The melting point

The temperature that a quality of output into a liquid under normal air pressure is known as the melting point. The temperature at which a liquid's vapor pressure equals the pressure around it, turning the liquid into vapor (and vice versa).

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An element cannot be converted together into simpler substance since it is a pure material made up of just one type of atom.

Matter is everything that occupies space and appears to have mass; in other words, substance is really the "stuff" that now the cosmos is made of. They don't change into other elements through normal chemical processes and have distinct chemical and physical properties.

A material that is frequently referred to this as matter and that has a specific mass and volume distributed throughout space. Matters include things like pens, notebooks, toothbrushes, glasses, and milk, to name a few.

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Answer:

10

Explanation:

the volume of C2H2 reacted with 25 moles of O2

9.85L of ethyne is needed to react with 25 L of oxygen for the reaction at STP.

The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter.

A mole is defined as the amount of substance containing the same number of atoms, molecules, ions, etc. as the number of atoms in a sample of pure 12C weighing exactly 12 g.

Given,

Volume of oxygen = 25 L

We know that 1 mole of a gas occupies 22.4 L of volume

So, 25L is occupied by 1.11 moles of oxygen.

From the reaction, 5 moles of oxygen needs 2 moles of ethyne.

1 mole of oxygen would need 2/5 moles of ethyne

Thus, moles of ethyne needed = ( 2 / 5) × 1.11

= 0.44 moles

Volume of ethyne needed = 0.44 × 22.4 = 9.85 L

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usually referring to chemical elements that are solid

pononium ,and silver

Explanation:

hope it helped

Answer:

It's a Sodium Atom

If a material is ohmic, the resistance is expected to be constant. An ohmic material is a material that follows Ohm's law. In other words, the electric current flowing through the material is proportional to the potential difference or voltage applied across the material at a constant temperature and pressure.

The resistance of the ohmic material is defined by the ratio of the potential difference applied to the current flowing through the material. If a material follows Ohm's law, it is considered to be an Ohmic material. In ohmic materials, the resistance is constant, meaning it doesn't vary as the voltage and current change. If the current through an ohmic material is doubled, the voltage across the material is also doubled.

Hence, the resistance of the material remains constant. In contrast, the resistance of non-ohmic materials varies with voltage and current. Resistance is the degree to which an object opposes the flow of electrical current. The resistance of a material depends on its physical properties such as length, cross-sectional area, and temperature. The resistance of a conductor is defined by the ratio of the voltage applied across it to the current that flows through it. The unit of resistance is ohms (Ω).

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In the face-centered cubic (FCC) crystal structure, the close-packed direction refers to the direction along which the atoms are densely packed. In the FCC structure, the close-packed direction is represented by the Miller indices <110>. This means that the atoms are arranged densely along the <110> direction in the crystal lattice.

Plastically deforming a metal specimen at low temperatures, specifically below 0.3 times the melting temperature (Tmelt), has certain effects on its mechanical properties. At low temperatures, the movement of dislocations within the crystal lattice is hindered, making it difficult for the metal to undergo plastic deformation. As a result, the metal tends to exhibit brittle behavior.

During plastic deformation at low temperatures, the tensile strength of the metal specimen generally decreases. This is because the limited dislocation movement restricts the ability of the metal to withstand external forces, leading to a decrease in its strength. However, despite the decrease in tensile strength, the metal specimen experiences an increase in ductility.

The increase in ductility can be attributed to the reduced dislocation movement. With limited dislocation motion, there is a lower likelihood of dislocation pile-ups and subsequent fracture initiation. This allows the metal to deform more plastically before failure, resulting in an increase in ductility.

To summarize, plastically deforming a metal specimen at low temperatures (below 0.3 Tmelt) generally leads to a decrease in tensile strength and an increase in ductility.

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Answer:

The more optically dense that a material is, the slower that a wave will move through the material. ... So as the index of refraction value increases, the optical density increases, and the speed of light in that material decreases.

The type of moon that Chelsea was seeing is full moon (option A).

The moon is any natural satellite of a planet. It is defined to be a celestial body that makes an orbit around a planet, including the eight major planets, dwarf planets, and minor planets.

The eight phases of the moon are as follows;

According to this question, Chelsea went camping for one week. Each night she saw the moon and noticed that the moon seemed to be getting larger.

It can be said that Chelsea is seeing the full moon.

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Answer:

C is correct

Explanation:love ya all

Answer:

B

Explanation:

because protons have a +1 charge and electrons have a -1 charge, so if an atom is neutral it must have the same amount of protons and neutrons

Answer:

A pressure cooker works based on Bernoulli's Principle.

Explanation:

trust me u will get what I am saying

A pressure cooker is primarily based on the precept that with the growth in stress, the boiling factor of water increases. it really works by means of capturing the steam which will increase the pressure inside the vessel. due to a boom in pressure, the boiling point of water rises up.

Pressure cooking is the method of cooking meals beneath excessive stress steam, using water or a water-primarily based cooking liquid, in a sealed vessel known as a pressure cooker. Excessive pressure limits boiling, and creates higher cooking temperatures which cook meals far greater quickly.

A pressure cooker is based on the principle that boiling point of water will increase with the growth in pressure. It really works through shooting the steam that, as it builds up, will increase the strain within the vessel.

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