Cookware companies have been using a chemical called C-8, which helps to create a nonstick coating to pans. However, the Environmental Protection Agency (EPA) recently claimed that the use of C-8 in the manufacturing of nonstick cookware should be discontinued because studies show it causes cancer.

Who might benefit financially the most from the EPA’s claim?

Answer:

1.

A. 3 significant figures

B. 4 significant figures

C. 3 significant figures

D. 2 significant figures

E. 2 significant figures

F. 2 significant figures

The reactant that must be present for a reaction to be classified as combustion is Option C- O2​.

What is a combustion reaction?

A combustion reaction is a type of exothermic reaction in which a substance reacts quickly with oxygen gas, generating heat and often light in the process. Combustion is the act of burning, and it usually requires heat.

Combustion is a type of chemical reaction that occurs between oxygen and a fuel source when it is heated to its ignition temperature. A typical combustion reaction is one in which a hydrocarbon reacts with oxygen to produce carbon dioxide and water vapor.

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Answer:

A composite material is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual components.

Explanation:

you're welcome

Narrative form or storytelling is used to convey events, experiences, or information. In a narrative form, a single atom of Nitrogen, in the form of Nitrogen gas (N2) travels through different pools. The description of each pool it passes through as a source or a sink is given below:

In the atmosphere:Nitrogen gas is the most abundant gas in the atmosphere, it comprises about 78% of the earth's atmosphere. It is a component of many organic and inorganic compounds in the atmosphere.In the biosphere:Nitrogen-fixing bacteria or lightning can convert nitrogen gas into ammonia. This ammonia can be converted into nitrite and then nitrate through nitrification. This nitrate can be taken up by plants and utilized to make proteins and other molecules that are important for life.

Animals that consume these plants get the nitrogen that they need to build their own proteins. When an organism dies, decomposers like bacteria break down the proteins and return the nitrogen back to the soil in the form of ammonia and other organic compounds.In the atmosphere:Denitrification is the process that converts nitrate to nitrogen gas, which is then released into the atmosphere. This can be done by anaerobic bacteria and other microbes that live in soils and other places where there is little or no oxygen. Human activities that influence the movement of Nitrogen:Humans have a significant impact on the movement of nitrogen in the environment. One of the ways in which they do this is through the use of fertilizers, which contain high levels of nitrogen. These fertilizers can be washed into rivers and streams, where they can cause eutrophication.

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Answer:

Compressional waves travel through a medium.

Explanation:

Based on the Laws of Thermodynamics, when a beaker of isobutyl alcohol is put inside a sealed tank containing isobutyl alcohol gas at 103.

Degree c and 619. torr, the pressure inside the tank will be higher than the pressure in the beaker, causing some of the liquid to evaporate and increase the liquid volume in the beaker. Therefore, after ten minutes, there will be more liquid in the beaker than before.

When a beaker of isobutyl alcohol is put inside a sealed tank containing isobutyl alcohol gas at 103°C and 619 torr, the molecules of isobutyl alcohol gas in the tank will be more energetic due to the increased temperature. As a result, they will move faster and collide with each other more frequently, raising the pressure inside the tank. The higher pressure in the tank will push molecules of isobutyl alcohol gas into the beaker, where they will condense into liquid due to the decrease in pressure.

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Answer:

partly ionic and partly covalent

The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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The kinetic energy of the alpha particle is equal to: B.\(7.47 \times 10^{-13}\;J\)

Given the following data:

Scientific data:

To calculate the kinetic energy of the alpha particle:

Mathematically, kinetic energy is calculated by using this formula;

\(K.E = \frac{1}{2} MV^2\)

Where:

Substituting the given parameters into the formula, we have;

\(K.E = \frac{1}{2} \times 6.642 \times 10^{-27}\times (1.5 \times 10^{7})^2\\\\K.E = \frac{1}{2} \times 6.642 \times 10^{-27}\times 225 \times 10^{14}\\\\K.E =6.642 \times 10^{-27}\times 1.125 \times 10^{14}\\\\K.E =7.47 \times 10^{-13}\;J\)

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Answer:

The correct answer is 1) 257 and 2) 135

Explanation:

Aluminum Alloy, Nickel Alloy, Zinc Alloy, and Titanium Alloy are examples of nonferrous metals.

Nonferrous metals are metals that do not contain iron or have only a small amount of iron in their composition. These metals have a range of properties that make them useful in a variety of applications.

For example, aluminum is a lightweight metal that is used in the construction of aircraft and cars, while copper is an excellent conductor of electricity and is used in electrical wiring and electronics. Zinc is used as a coating to protect steel from corrosion, while nickel is used in the production of stainless steel.

One of the advantages of nonferrous metals is their resistance to corrosion, which makes them suitable for use in environments where moisture and corrosive substances are present.

They also have a high strength-to-weight ratio, which makes them ideal for use in applications where weight is a concern, such as aerospace and automotive industries. Additionally, nonferrous metals are often more ductile and malleable than ferrous metals, which allows for easier processing and shaping.

Overall, nonferrous metals play a critical role in modern society and are essential for many industrial and technological applications.

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CORRECT QUESTION

Aluminum Alloy, Nickel Alloy, Zinc Alloy, and Titanium Alloy are examples of: Nonferrous Metals Ceramics Superalloys Cermets. EXPLAIN

Answer:

6.31x10¹¹s⁻¹ = Frequency

Explanation:

To convert frequency to energy or vice versa we must use the equation:

e = h*f

Where e is energy in joules (4.18x10⁻²²J)

h is Planck's constant (6.626x10⁻³⁴Js)

Replacing:

4.18x10⁻²²J = 6.626x10⁻³⁴Js*f

Answer:

Under the earth's surface, rocks melt, metamorphize, and crystalize.

Explanation:

Metamorphic and Igneous rocks are basically dependant on the heat/pressure of the environment under the surface :) Melting, metamorphosing and crystallization all occur under earth's surface.

The specific processes in the rock cycle that occur beneath the Earth surface are :

Under the Earth surface the specific rock cycle processes that leads to the formation of the different types of rocks includes;  Melting, metamorphization and rock crystallization.

Metamorphic rocks are formed from other rocks ( sedimentary and igneous rocks)  due to the change in temperature and this process is metamorphization. while igneous rocks are formed from molten rocks caused by the melting process. Sedimentary rocks are formed by the deposition of sediments from weathering of existing rocks this is the  crystallization process.

Hence the specific process in the rock cycle that occur beneath the Earth's surface are : Melting, metamorphosing and crystallization.

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In general, the formation of a chemical bond lowers the potential energy of a chemical system, leading to a more stable arrangement.

Stored energy depends upon the relative position of various parts of a system.

In bond formation, atoms lose their potential energy to attain stability and heat is evolved. The bond formation is an exothermic reaction.

Atoms bond together to form compounds to attain lower energies than they possess as individual atoms.

A quantity of energy is equal to the difference between the energies of the bonded atoms and the energies of the broken atoms.

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Answer:

The answer is 10

Explanation:

The statement that correctly identifies the type of mixture is that homogeneous mixtures have parts that are distributed evenly. The correct option is c.

A homogeneous mixture is sole in which the composition is consistent throughout the solution.

Since the dissolved salt is evenly distributed throughout the salt water sample, the salt water described as an illustration is homogeneous.

The statement that accurately defines the type of mixture is that homogeneous mixtures have evenly distributed parts.

Thus, the correct option is c.

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Answer:

144 N

Explanation:

Newton's 3rd Law: "For every action, there is an equal and opposite reaction."

Answer

The theoretical Van't Hoff factor i for C12H22O11 is 1

Explanation

The Van't Hoff factor, i, is the number of particles formed in a solution from one formula unit of solute.

The Van't Hoff factor, i, is a property of the solute. In an ideal solution, i does not depend on the concentration of the solution.

For a nonelectrolyte, like (C12H22O11), which does not separate into ions in solution, Van''t Hoff factor, i = 1 because 1 molecule of sucrose (C12H22O11) forms only one particle in solution.f

Answer:

1+

Explanation:

The bonding in NaCl occurs by a sodium ion and a chloride ion while the bonding in sodium metal occurs by sodium ions and a sea of electrons.

The bonding of NaCl involves sodium and ion and chloride ion which are held together by an ionic bond. The sodium atom transfers an electron to chlorine atom in order to yield the chloride ion. This ion pair exists in the compound is known as sodium chloride.

In sodium metal, the sodium cations interact electrostatically with a sea of electrons forming a metallic bond. Hence, we can conclude that while the bonding in sodium chloride involves an ion pair, the bonding in sodium metal involves sodium ions and a sea of electrons.

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Therefore, the pH value of the solutions with [H+] values of 0.01, 1.0 x 10 –8, and 4.67 x 10 –4 are 2.0, 8.0, and 3.33 respectively.

pH is a measure of acidity or alkalinity of a solution and ranges from 0 to 14.

The value of pH is defined as the negative logarithm of hydrogen ion concentration. The hydrogen ion concentration in a solution is a measure of its acidity or basicity. The higher the hydrogen ion concentration, the lower the pH value, and the solution is more acidic. Similarly, the lower the hydrogen ion concentration, the higher the pH value, and the solution is more alkaline.

Hence, the pH value of the solutions with the given [H+] values can be calculated as follows:

a) [H+] = 0.01pH

= -log[H+]

= -log(0.01)

= 2.0

b) [H+] = 1.0 x 10 –8 pH

= -log[H+]

= -log(1.0 x 10 –8)

= 8.0

c) [H+] = 4.67 x 10 –4 pH

= -log[H+]

= -log(4.67 x 10 –4)

= 3.33

It is important to remember that the hydrogen ion concentration [H+] is measured in moles per liter (mol/L), and the pH value of a solution can be calculated using the formula: pH = -log[H+].

Also, the negative sign in the formula indicates that the pH value is inversely proportional to the hydrogen ion concentration.

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Answer:

Explanation:

The answer is clay brick

Explanation: the clay brick keeps it cooler also it keeps it firm.

Hope this helps :)

Explanation:

The claim that hydrogen chloride (HCl) would be much stronger than nitric acid (HNO3) due to opposing dipole forces is incorrect.

Both HCl and HNO3 are strong acids, meaning that they dissociate completely in water to produce H+ ions. The strength of an acid is determined by the degree to which it dissociates in water. In other words, the stronger the acid, the more H+ ions it produces in water.

The dissociation of HCl and HNO3 in water can be represented as follows:

HCl + H2O → H+ + Cl-

HNO3 + H2O → H+ + NO3-

As we can see, both HCl and HNO3 produce H+ ions in water. Therefore, the strength of an acid cannot be solely determined by its dipole forces.

In addition, it's important to note that HCl is a much more volatile and corrosive acid than HNO3. It can cause severe respiratory and skin irritation when it is inhaled or comes into contact with skin. Therefore, switching HNO3 for HCl could be dangerous and should not be done without proper precautions and expert knowledge

Answer:

dangerous and heavy

Explanation:

just did it!

Answer:

d

Explanation:

cuz

Answer:

TYPES OF HEATING: There are three types of heat transfer: conduction, convection, and radiation.

OCEAN ANSWER: Ocean currents are driven by a range of sources: the wind, tides, changes in water density, and the rotation of the Earth. The topography of the ocean floor and the shoreline modifies those motions, causing currents to speed up, slow down, or change direction.

Explanation:

the answer is basicly the person who answered above me

Explanation:

The fact that platinum is found in its native state indicates that it is relatively unreactive. Native state refers to an element occurring in nature in its pure, uncombined form.

This suggests that platinum has low reactivity towards common environmental conditions and does not readily react with other elements or compounds.

One use of platinum that depends on its low reactivity is in catalytic converters. Catalytic converters are devices used in vehicles to reduce harmful emissions from the exhaust gases. Platinum acts as a catalyst in this process, facilitating the conversion of toxic pollutants, such as carbon monoxide, nitrogen oxides, and unburned hydrocarbons, into less harmful substances through chemical reactions. The low reactivity of platinum allows it to withstand the harsh conditions of exhaust gases without undergoing significant chemical changes itself, making it an effective catalyst for pollution control.

Additionally, platinum is used in various other applications where its unreactive nature is beneficial, such as in jewelry, electrical contacts, and laboratory equipment. Its resistance to corrosion and oxidation makes it suitable for these purposes, ensuring its longevity and maintaining its appearance and functionality over time.

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