If I start with 5 grams of C3H8, what is my theoretical yield of water?

They describe different forms of matter, solid and liquid. As well as both being entirely differently structured forms of matter.

They distinguish between solid and liquid matter. In addition to being completely different types of matter.

Matter is defined as everything that takes up space other words, the "material" that makes up the universe.

All matter is composed of substances known as elements, each of which has unique chemical and physical properties and cannot be decomposed into other materials through ordinary chemical reactions.

Atoms and molecules make up some of the material in the category of solids, liquids, and gases.

The matter that makes up wood have characteristics of any solid, i.e., high intermolecular force of attraction that holds it shape.

The matter that is making water will have liquid characteristics, which do not have a particular shape and will have weak intermolecular forces of attraction.

Thus, this is the chief difference between the "matter that makes up wood" and the "matter that makes up water".

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The forward acceleration of the bicycle if you apply a forward force of

125 N is 1.52 m/s² option A.

A force is an action that modifies the velocity of an object with mass. It can be a push or a pull and always has magnitude and direction, making it a vector quantity. The unit of force used to quantify it is newtons (N), which is represented by the symbol F.

In its original form, Newton's second law states that the net force acting on an object is equal to the rate of change of its momentum over time. According to this rule, the acceleration of an object is inversely proportional to its mass if the mass of the object is constant, directly proportional to the net force acting on the object, and in the direction of the net force.

Force  = 125N

Mass combined  = 82kg

Acceleration of the bicycle  = x

From Newton second law of motion suggests that:

  Force = mass x acceleration

 Acceleration = force/mass

= 125/82

= 1.52 m/s²

Therefore, acceleration of the bicycle is 1.52 m/s².

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Suppose 5.0 mol of antimony (III) fluoride is added to 10.0 mol of carbon tetrachloride, and from the 100% reaction there are the equivalents of 0 moles of SbF₃, 5.0 moles of SbCl₃, 0 moles of CCl₄, and 15.0 moles of CClF₂.

A balanced reaction is one where the reactants and products are present in equal amounts, and if the 100% reaction takes place, then the reactant sides have 1 mol of SbF₃ and 3 mol of CCl₄ that make the product of 1 mol of SbCl₃ and 3 mol of CClF₂. After the 100% reaction, all the reactants get converted into the product. The complete reaction is the below.

SbF₃ + 3CCl₄ → SbCl₃ + 3CClF₂

Hence, suppose  5.0 mol of antimony (III) fluoride is added to 10.0 mol of carbon tetrachloride, and from the 100% reaction there are the equivalents of 0 moles of SbF₃, 5.0 moles of SbCl₃, 0 moles of CCl₄, and 15.0 moles of CClF₂.

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Answer: 20.16cm³ of CO₂ produced

Explanation: the equation for the reaction between carbon monoxide (CO) and oxygen (O2) is:

2CO (g) + O₂ (g) → 2CO₂ (g)

Given that 20 cm³ of carbon monoxide is reacted with 10 cm³ of oxygen. From the equation,

we can see that two molecules of CO react with one molecule of O₂to produce two molecules of CO₂

Since we have 20 cm³ of CO and 10 cm³ of O₂, we can calculate the number of moles of CO and O₂ as follows:

CO: 20 cm³ x (1 mole / 22.4 cm³) = 0.89 moles

O₂: 10 cm³ x (1 mole / 22.4 cm³) = 0.45 moles

Since two molecules of CO react with one molecule of O₂, the number of moles of O₂ is half the number of moles of CO. Since we have 0.45 moles of O₂, we can calculate the number of moles of CO₂ produced as follows:

0.45 moles x 2 = 0.9 moles

Finally, to find the volume of CO₂ produced, we can multiply the number of moles of CO₂ by the volume occupied by one mole of CO₂:

0.9 moles x 22.4 cm³/mole = 20.16 cm³

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Answer:

Ar

Explanation:

the last one

The diagram that shows a pure substance which is composed of only individual atoms and not molecules will be: argon gas. Option D is correct.

A pure substance composed of only individual atoms is called an element. In the periodic table, each element is represented by a unique symbol, and its atoms cannot be further broken down into simpler substances by chemical means.

Liquid water: Water (H₂O) is a compound composed of two hydrogen atoms bonded to one oxygen atom. It consists of molecules, not individual atoms.

Hydrogen gas: Hydrogen gas (H₂) is composed of two hydrogen atoms bonded together to form a diatomic molecule. It is not composed of individual atoms.

Carbon dioxide GAS: Carbon dioxide (CO₂) is a compound consisting of one carbon atom bonded to two oxygen atoms, forming a molecule of CO₂.

Argon gas: Argon (Ar) is an element, and in its pure form as a gas, it exists as individual argon atoms (Ar). It is not bonded to any other atoms, and there are no molecules involved. Therefore, argon gas is composed of individual atoms and represents a pure substance.

Hence, D. is the correct option.

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The Solar weather affects the Earth's magnetosphere which is a threat to our magnetic protection and can cause turbulence.

The effect is like widening a hole—suddenly more energy and particles enter the magnetosphere. Auroras intensify, and geomagnetic storms become likely. For this reason, scientists pay careful attention to not only the strength but also the orientation of incoming magnetic fields from the sun. As the wind blows from the galaxy towards the earth it carries with it the Sun's magnetic field. It moves very fast, then smacks right into the Earth's magnetic field. The blow causes a shock to our magnetic protection, which can result in turbulence.

So we can conclude that: The Solar weather affects the Earth's magnetosphere which is a threat to our magnetic protection and can cause turbulence.

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Answer:

3 × 10¯¹⁰

Explanation:

9×10² ÷ 3×10¹²

The above expression can be evaluated as follow:

9×10² ÷ 3×10¹²

Recall:

3² = 9

3¹ = 3

Therefore,

9×10² ÷ 3×10¹² = 3²×10² ÷ 3¹×10¹²

Recall:

y^m ÷ y^n = y^(m – n)

Therefore,

3²×10² ÷ 3×10¹² = 3²¯¹ × 10²¯¹²

= 3¹ × 10¯¹⁰

Recall:

y¹ = y

Therefore,

3¹ × 10¯¹⁰ = 3 × 10¯¹⁰

Therefore,

9×10² ÷ 3×10¹² = 3 × 10¯¹⁰

The downside of this is that the longer lasting material is more difficult to break down.

Both natural fibers and synthetic fibers are polymer materials. Polymer materials are materials that are made by the agglomeration of small molecules called monomers.

The natural fibers are less long lasting than the synthetic fibers. The downside of this is that the longer lasting material is more difficult to break down. As a result of these, synthetic fibers lead to environmental pollution problems.

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Answer:

the longer lasting material is more difficult to break down.

Explanation:

Answer:

Radiology departments in hospitals use x-rays, MRIs, CT scans, etc. on a daily basis, meaning they are heavily exposed to radiation without protective equipment, and said exposure can cause cancer down the line and shorten their life significantly. To prevent this from happening, they give the radiologist (and the patient) with equipment with lead (and other materials) which reflects or absorbs the radiation from these scans, including shoes with special soles. These shoes are most likely worn due to the radiation left in the scanning room floors after scans. Radiologists also go to a special room with heavy radiation protection where they can activate and monitor the scan.

In an electrolytic cell, commonly made of platinum, electrolysis takes place between a positively charged anode and a negatively charged cathode.

Thus, Two half-reactions that take place at the cathode and anode make up the chemical reaction for water electrolysis.  At the cathode, a reduction reaction takes place as hydrogen ions pick up electrons and change into hydrogen gas.

The separation of hydrogen and oxygen from water is demonstrated by the water electrolysis reaction.

Two moles of water are converted into two moles of hydrogen and one mole of oxygen. The amount of hydrogen produced is twice that of oxygen in moles. Between the electrodes and the electrolyte, charges are also exchanged.

Thus, In an electrolytic cell, commonly made of platinum, electrolysis takes place between a positively charged anode and a negatively charged cathode.

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Explanation:

\(element \: with \: 2 \: atomic \: number \\ \\ is \: stable \: because \: it \: has \: already \: \\ \\ completed \: its \: orbit \: \\ \\ but \: atomic \: number \: with \: 3 \: and \: 9 \\ \\ will \: have \: to \: become \: stable \: \\ \\ after \: giving \: one \: electron \\ \\ so \: \: element \: with \: 3 \: and \: 9 \: atomic \: number \\ \\ is \: most \: reactive\)

Answer:

The answer to this is A. One kind of atom

Explanation:

The other options make no sense whatsoever. But enjoy.

I hope this helped.

Answer:

A. One kind of atom

Explanation:

When a ground state hydrogen atom absorbs a photon of light having a wavelength of 92.6 nm, the final state of the hydrogen atom is the excited state.

The hydrogen atom has only one electron, which is located in the ground state or the first energy level. When a photon of light of 92.6 nm wavelength is absorbed, the electron gains energy and jumps to the higher energy level, which is the second energy level (n = 2).

Thus, the final state of the hydrogen atom is the excited state or the second energy level. The energy absorbed by the electron is equal to the energy of the photon. The energy of a photon is given by the formula: Energy of a photon = hc/λwhere,h = Planck's constant = 6.626 x 10⁻³⁴ J.s

c = speed of light = 3 x 10⁸ m/s λ = wavelength of the photon

Substituting the given values, we get

Energy of a photon = (6.626 x 10⁻³⁴ J.s x 3 x 10⁸ m/s) / (92.6 x 10⁻⁹ m)

Energy of a photon = 2.14 x 10⁻¹⁸ J. The energy absorbed by the electron is equal to the energy difference between the two energy levels.

The energy of an electron in the nth energy level of the hydrogen atom is given by the formula: E_n = (-2.18 x 10⁻¹⁸ J) / n² where, E_n = energy of electron in nth energy level

Substituting n = 1 (ground state), we get: E₁ = (-2.18 x 10⁻¹⁸ J) / (1)²   E₁= -2.18 x 10⁻¹⁸ J

Substituting n = 2 (excited state), we get: E₂ = (-2.18 x 10⁻¹⁸ J) / (2)²  E₂ = -0.545 x 10⁻¹⁸ J

The energy absorbed by the electron is the difference between the energy of the electron in the excited state and the energy of the electron in the ground state.

ΔE = E₂ - E₁

ΔE = (-0.545 x 10⁻¹⁸ J) - (-2.18 x 10⁻¹⁸ J)ΔE = 1.64 x 10⁻¹⁸ J

Since the electron gains energy, the energy absorbed by the electron is positive. Therefore, the final state of the hydrogen atom is the excited state.

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The cell reaction is Ag(aq) + Cr3+(aq) → Ag(s) + Cr2+(aq). The standard cell potential is 0.742 V.

A voltaic cell is a device that utilizes a spontaneous chemical reaction to generate electricity. A half-cell is a component of the voltaic cell that contains either an oxidizing or reducing agent.

The salt bridge is used to connect the two half-cells and prevent mixing of the solutions.The given cell reaction is Ag(aq) + Cr3+(aq) → Ag(s) + Cr2+(aq).

This reaction takes place in two half-cells.

In one half-cell, Ag is oxidized to Ag+.

In the other half-cell, Cr3+ is reduced to Cr2+.

The cell potential, Ecell, can be calculated using the Nernst equation:

Ecell = E°cell - (RT/nF)

lnQwhere E°cell is the standard cell potential,

R is the gas constant,

T is temperature in kelvin,

n is the number of electrons transferred in the reaction,

F is the Faraday constant, and

Q is the reaction quotient.

The standard cell potential for the given cell reaction is 0.742 V.

Therefore, the cell generates 0.742 volts of electrical potential difference.

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Answer:

The answer is false.

If this answer was helpful please consider giving brainliest!

Answer:

False

Explanation:

I think it's a chemical change when the composition of a substance changes and forms a new substance

The pH value of the solution which have a count of hydrogen ion [H⁺] of 0.57 is 0.244.

The pH ("potential of hydrogen" or "power of hydrogen") of a solution is essentially a measure of the concentration of hydrogen ions in a solution. In other terms, pH is a scale used to define the acidity or basicity of an aqueous solution. Acidic solutions with larger quantities of H+ ions have lower pH values than basic or alkaline solutions.

In the provided solution, the strong bases are totally ionised. As a result, the concentration of the hydroxide ion is the same as the concentration of the base. The hydroxide ion concentration in the mixture is equal to the sum of the base concentration divided by the entire volume.

we have value of [H⁺] is  0.57

so pH of the solution is

pH = -log [H⁺]

= - log(0.57)

= - (-0.244)

= 0.244

pH of the solution is 0.244.

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Answer:

solute and solvent

Explanation:

Answer:

110.21 g/mol

............................

Answer:

110.22 g in 2.75 moles of calcium

Explanation:

to convert moles to grams

moles (g/mol)

2.75 mol Ca (40.08 (atomic weight) g Ca/1 mol Ca)= 110.22

Answer:

nucleus

Explanation:

the nucleus is made of protons and neutrons that make up the mass of the atoms, electrons have negligible masses

Answer:

the nucleus

Explanation:

The protons and neutrons in the center of the atom are about 2,000 times heavier than the electrons orbiting around it. Because the electrons are so light by comparison, they represent only a tiny fraction of a percent of the atom's total weight.

The two px atomic orbitals were used to form sigma bonding MO(figure, lower energy) and sigma antibonding MO (figure I, higher energy). The bonding MO doesn't have a node separating two halves of the orbital.

In atomic principle and quantum mechanics, an atomic orbital is a function describing the location and wave-like behavior of an electron in an atom. This function may be used to calculate the possibility of finding any electron of an atom in any precise vicinity around the atom's nucleus.

The positions surrounding an atom's nucleus where the electrons are most possibly to be at any given second are atomic orbitals. it is a mathematical characteristic that defines both one electron and a couple of electrons' wave-like behavior in an atom.

There are 4 kinds of atomic orbitals; specifically s(sharp), p(principle), d(diffuse), and f(fundamental).

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The table shows that as the atomic radius grows, the boiling points of the halogens rise. This implies that the intensity of the intermolecular interactions between the atoms and the size of the halogen atom are related.

Because astatine has a bigger atomic radius than iodine, we can infer from this pattern that it will have a higher boiling point.

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(a) here no is the initial amount and no = 8 we are told that the culture doubles every 1.5 hours. we can use the model given to us in part a to find the variable a.

16-8.2 1.5/a

16 2

8 21 1.5/a = 2

1 = 1.5

a = 1.5

so our exponential model is now (n(t) = 8.2 ±/1.5

(b) Number of bacteria after 26 hours:

n(t) = 8.2/1.5

put t = 26

26/1.5

n(t) = 8.2

n(t) = 8(165140-37) n(t) ≈ 1321123.

Calculate the number of bacteria per milliliter or gram of sample by multiplying the number of colonies by the dilution factor times the amount of sample added to the liquefied agar. The easiest way to measure bacterial growth is to place the sample on a clear glass plate under a microscope and count the number of bacterial cells.

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Adding buffering compounds to neutralize acids is used to address acid mine drainage.

Therefore, the correct option is C.

Adding lime or other alkaline materials to neutralize the acidity of the soil, as well as adding uncontaminated topsoil, planting vegetation, and modifying slopes to stabilize the soil and reduce surface water infiltration into the underlying contaminated material, are some of the common methods for cleaning up contaminated land. The most commonly used technique for treating AMD contamination is the use of alkaline reagents like lime, limestone, sodium carbonate, or sodium hydroxide. The purpose of this process is to neutralize acidic water and prevent the precipitation of heavy metals.

Acid mine drainage (AMD) is a global problem that has negative effects on the ecosystem. Because of its high acidity and high concentration of heavy metals and metalloids, AMD is harmful to both plants and animals as well as to people. Traditional AMD therapies have been in use for a very long time.

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Therefore, the correct option is (d) (CH3)3N. The Bronsted-Lowry theory defines an acid as a proton (H+) donor and a base as a proton acceptor. In the given options.

HF is an acid as it donates a proton, and CH3COOH and HNO2 are also acids as they can donate a proton from their -COOH and -NO2 groups, respectively. On the other hand, (CH3)3N is a Bronsted-Lowry base as it can accept a proton from an acid. It is important to note that a substance can act as an acid or base depending on the context of the reaction. In this case, the options given are being considered as potential bases or acids in a chemical reaction.
According to the Brønsted-Lowry definition, a base is a substance that can accept a proton (H+ ion). Out of the given options:

a. HF: Hydrofluoric acid, which is an acid, not a base.
b. CH3COOH: Acetic acid, which is also an acid, not a base.
c. HNO2: Nitrous acid, which is another acid, not a base.
d. (CH3)3N: Trimethylamine, which is a base, as it can accept a proton.

Therefore, the correct answer is option d. (CH3)3N, as it is the only Brønsted-Lowry base among the given options. It can accept a proton due to the presence of a lone pair of electrons on the nitrogen atom, which forms a bond with a proton, acting as a base.

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Answer:

it's volume also decrease

During osmosis, water molecules move through a semipermeable membrane from an area of high concentration to an area of low concentration,

which occurs to equalize the concentration of solutes on both sides of the membrane. This process is important in maintaining the water balance in living cells. Water is the only molecule that is small enough to pass through the semipermeable membrane during osmosis, while larger molecules like proteins and glucose are generally not able to pass through. Similarly, ions, such as sodium and chloride, have an electrical charge and require specialized channels or transporters to pass through the membrane. Therefore, water is the primary molecule that is able to pass through the semipermeable membrane during osmosis.

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Hydrogenated compounds, particularly hydrogen gas (H2), are often considered as potential fuels for spark ignition engines.

Hydrogenated compounds are considered the most suitable fuels for spark ignition engines because hydrogen is a highly flammable gas with a low ignition energy and a wide flammability range. When compared to gasoline or diesel, hydrogen has a higher energy content by weight, which makes it an attractive fuel choice.

Due to increasing temperature, the chemical reaction rate also increases as the element moves from a solid to a liquid to a gas.Physical state transitions are dependent on temperature, and the rate of chemical reactions that occur as a result of these state transitions is also influenced by temperature.

At higher temperatures, the chemical reaction rate typically rises as molecules have more kinetic energy and collide with one another more frequently.

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Answer:

A

Explanation:

Did the quiz

The statement from the lab report best represents a conclusion, based on our results, students who do 1 hour of chores per night have grades that are on average 0.2 points higher than students who do no chores. The correct option is A.

A scientific investigation is an investigation that is done by experimenting or solving things by scientific methods. These methods include variables, and controlled calculation and time.

Here, the lab investigation is saying the relationship between the number of times students are spending the time doing chores every night

Thus, the correct option is A. According to our findings, pupils who perform one hour of chores each night earn, on average, 0.2 points more than those who do not.

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Answer:

B)  40 individuals emigrate, 0 individuals die, 10 individuals are born, 28 individuals immigrate

Explanation:

its right on edg2020 :)

The Ka : 1.671 x 10⁻⁷

Given

Reaction

HA (aq) + H2O (l) ←→ A- (aq) + H3O+ (aq).

0.3 M HA

pH = 3.65

Required

Ka

Solution

pH = - log [H3O+]

\(\tt [H_3O^+]=10^{-3.65}=2.239\times 10^{-4}\)

ICE method :

HA (aq)        ←→   A- (aq)    +    H3O+ (aq).

0.3                           0                 0

2.239.10⁻⁴           2.239.10⁻⁴   2.239.10⁻⁴

0.3-2.239.10⁻⁴    2.239.10⁻⁴    2.239.10⁻⁴

\(\tt Ka=\dfrac{[H_3O^+][A^-]}{[HA]}\\\\Ka=\dfrac{(2.239.10^{-4}){^2}}{0.3-2.239.10^{-4}}\\\\Ka=1.671\times 10^{-7}\)