Identify a problem of human impact on the environment that could be solved through designing a device or process. A. Define the problem. B. Identify who would be helped by solving this problem. C. List the criteria and constraints of the problem. D. Brainstorm at least two possible solutions to the problem

Answer:

FDA

Explanation:

Answer:

FDA

Explanation: it right ;)

The number of carbon atoms hydrogen atoms and fluorine atoms in a molecule of hcfc-22 is one.

HCFC-22 has one carbon atom, two hydrogen atoms, one fluorine atom, and three chlorine atoms in a single molecule. It has a molecular formula of CHClF2. It is an organohalogen compound that is used as a refrigerant and is also known as chlorodifluoromethane.The molecular formula of HCFC-22 is CHClF2.

It has one carbon atom, two hydrogen atoms, one fluorine atom, and three chlorine atoms. Therefore, the number of carbon atoms in a molecule of HCFC-22 is 1, the number of hydrogen atoms is 2, and the number of fluorine atoms is 1.

HCFC-22 has one carbon atom, two hydrogen atoms, one fluorine atom, and three chlorine atoms in a single molecule with the molecular formula CHClF2.

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The compound that would have the highest boiling point is 1-butanol.

Boiling point:

The boiling point is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid, resulting in the conversion of the liquid into its vapor.   The chemical formula for a compound is determined by the number of atoms of each element that have been chemically bonded together. The highest boiling point of the compounds listed is 1-butanol.

One reason is because of the presence of a hydroxyl group, which is polar and can create hydrogen bonding, which increases the intermolecular forces between molecules, which in turn leads to a higher boiling point. Diethyl ether and 1-perfluorobutane have lower boiling points than 1-butanol because they lack a polar hydroxyl group, which is important for hydrogen bonding.

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The cultures of prehistoric humans are primarily known through the excavation of stone tools and other durable artifacts, such as the Oldowan and Acheulian tool traditions.

Stone tools and imperishable artifacts serve as key archaeological evidence for understanding prehistoric cultures. Through meticulous excavation and analysis, archaeologists have been able to piece together the lifestyles, technological advancements, and social behaviors of early human societies. The term "paleolithic" refers to the Old Stone Age, a time when humans relied on stone tools as their primary implements.

The Oldowan tool tradition is considered the earliest stone tool industry, dating back around 2.6 million years ago. It is characterized by simple tools, such as choppers and scrapers, which were crafted by flaking off pieces from larger stones. These tools were primarily used for basic activities like butchering and processing animal carcasses.

Later, the Acheulian tool tradition emerged around 1.76 million years ago, representing an advancement in stone tool technology. Acheulian tools, such as handaxes and cleavers, were more refined and standardized, showcasing an increased level of sophistication in tool-making techniques. These tools served a wide range of purposes, including hunting, woodworking, and shaping raw materials.

By studying the Oldowan and Acheulian tool traditions, researchers gain valuable insights into the cognitive abilities, cultural development, and technological progress of early humans. The examination of these artifacts provides evidence of their adaptability, problem-solving skills, and the gradual refinement of their tool-making techniques over time.

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Answer:

Explanation:

Isopropyl alcohol has three intermolecular forces: London dispersion forces from its hydrocarbon chain. dipole-dipole forces from the difference in polarities due to the presence of oxygen atom. hydrogen bonding due to the presence of hydrogen bonded to an oxygen atom.

Answer:

The emptiest one.

Explanation:

The more water, the more heat molucules have to turn to boil.

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Answer:

Explanation:

The most prominent function of mitochondria is to produce the energy currency of the cell, ATP (i.e., phosphorylation of ADP), through respiration and using sugar as fuel, and to regulate cellular metabolism .

The potential of the cell will change if the concentration of CrNO33 is changed to 3.00 molar. This is because the potential of the cell is dependent on the concentration of the ions present in the solution. The higher the concentration of CrNO33, the higher the potential of the cell. Conversely, if the concentration of CrNO33 is decreased, the potential of the cell will also decrease. Therefore, the potential of the cell will increase if the concentration of CrNO33 is changed to 3.00 molar.
If the concentration of Cr(NO3)3 is changed to 3.00 M, the potential of the cell will be affected according to the Nernst equation. The Nernst equation relates the cell potential to the concentrations of the reactants and products in the electrochemical cell. As the concentration of Cr(NO3)3 increases, the potential of the cell will either increase or decrease, depending on the reaction and the role of Cr(NO3)3 in it.The Nernst equation is a mathematical formula that relates the potential difference (voltage) of an electrochemical cell to the concentration of the reactants and products involved. It is named after the German chemist Walther Nernst who first derived it in 1889. The equation is as follows:

E = E° - (RT/nF) ln(Q)

where:

E is the cell potential (voltage)

E° is the standard cell potential (voltage) at standard conditions

R is the gas constant (8.314 J/mol*K)

T is the temperature in Kelvin

n is the number of electrons transferred in the redox reaction

F is the Faraday constant (96,485 C/mol)

ln(Q) is the natural logarithm of the reaction quotient, which is the ratio of the concentrations of the products to the concentrations of the reactants, each raised to the power of their stoichiometric coefficients.

The Nernst equation is used to calculate the potential of an electrochemical cell under non-standard conditions, where the concentrations of the reactants and products are not at their standard states. It is commonly used in analytical chemistry and electrochemistry to determine the concentration of an unknown species in a solution or to calculate the equilibrium potential of a redox reaction.

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The pressure of the gas inside the cylinder is 52.90 atm

Given is the number of moles of gas, the temperature and the volume of the gas and we need to find the pressure of the gas inside the cylinder, for this we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure of the gas (in units of pressure, such as atm)

V = Volume of the gas (in liters)

n = Number of moles of the gas

R = Ideal gas constant (0.0821 L·atm/(mol·K))

T = Temperature of the gas (in Kelvin)

First, let's convert the temperature from Celsius to Kelvin:

T = 25.0 °C + 273.15 = 298.15 K

Now we can substitute the values into the ideal gas law equation:

P × 12.5 L = 27.0 moles × 0.0821 L·atm/(mol·K) × 298.15 K

Simplifying the equation:

P × 12.5 L = 661.2587 L·atm

Dividing both sides by 12.5 L:

P = 661.2587 L·atm / 12.5 L

P ≈ 52.90 atm

Therefore, the pressure of the gas inside the cylinder is approximately 52.90 atm.

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We can use the ideal gas law equation to determine the pressure of a gas within a cylinder:

PV = nRT

Where:

P is the pressure of the gas (in units of pressure, such as atm)

V is the volume of the gas (in units of volume, such as liters)

n is the number of moles of the gas

R is the ideal gas constant (0.0821 L·atm/(mol·K))

T is the temperature of the gas (in units of temperature, such as Kelvin)

we need to convert the temperature from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 25.0 °C + 273.15

T(K) = 298.15 K

Now we can plug the data into the ideal gas law equation as follows:

P * 12.5 L = 27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K

Simplifying the equation:

P = (27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K) / 12.5 L

Calculating the pressure:

P ≈ 5.046 atm

As a result, the gas inside the cylinder is under a pressure of about 5.046 atm.

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An argumentative, plausible view of the literary work being evaluated is the claim in a literary analysis.

The claim in a literary analysis, which is an interpretation of a literary work, is the author's argument or viewpoint regarding the relevance or meaning of the work.

The assertion needs to be clear, debatable and backed up by textual evidence.

The claim in literary analysis is the main viewpoint or argument that the author is advancing regarding the relevance or meaning of the literary work under consideration.

The assertion should be a reasonable, disputed opinion that can be backed up by textual evidence, and it should be sufficiently detailed to be convincing and understandable to the reader.

For instance, in an interpretation of William Shakespeare's play "Hamlet," a writer can contend that, rather than a lack of courage, Hamlet's hesitation to exact revenge on his father's murderer stems from his desire for justice and his battle with indecision.

This assertion is both plausible and problematic because different readers or critics may interpret Hamlet's actions differently.

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Answer:

C. newton's third law of motion

Explanation:

as newton's third law of motion states that every action has a reaction that is equal in size, opposite in direction, and acts simultaneously.

First, we write down our reaction:

N2 + 3H2 → 2NH3

Don't forget to balance it.

We only use moles as units.

Procedure:

3 x 1 mole H2 ------------ 2 x 1 mole NH3

3.1 moles H2 ------------- x

x = 2.1 moles NH3 are produced

Answer: 2.1 moles NH3

The energy added during a phase change is used to overcome intermolecular forces and transform the substance from one phase to another, without causing a change in temperature.

During a phase change, such as melting, vaporization, or sublimation, the energy added is used to break or weaken the intermolecular forces between the particles of a substance. This energy is not used to increase the temperature of the substance but rather to change its state from solid to liquid or from liquid to gas.

When a solid is heated and undergoes melting, the added energy is used to break the intermolecular forces holding the particles in a fixed position, allowing them to move more freely in the liquid phase. Similarly, when a liquid is heated and undergoes vaporization, the added energy overcomes the intermolecular forces between the liquid particles, allowing them to escape and enter the gas phase.

During these phase changes, the temperature of the substance remains constant until the phase change is complete. This is because the added energy is absorbed as latent heat and is used to transform the substance rather than increase its temperature. Once the phase change is finished, further energy input will cause the substance to heat up.

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Answer:

lewis from stardew valley or who?

Explanation:

1.8 moles of magnesium iodide is equivalent to \(1.08516 * 10^{24}\) formula units. This answer can also be written in scientific notation as 1.08516e+24 formula units.

To determine the number of formula units in 1.8 moles of magnesium iodide, we need to use Avogadro's number, which is \(6.022 * 10^{23}\) formula units per mole.

First, we need to find the molar mass of magnesium iodide, which is 278.113 g/mol.

Given that 1.8 moles of magnesium iodide is present that needs to be converted into formula units..

Next, we can use the following calculation:
1.8 moles x \(6.022 * 10^{23}\) formula units/mole = \(1.08516 * 10^{24}\) formula units

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Secondary consumers are organisms that primarily feed on herbivores or other primary consumers.

They occupy the next trophic level above the primary consumers in a food web. They obtain energy by consuming the primary consumers and play an important role in regulating the population of herbivores.

Examples of commonly observed secondary consumers include:

Carnivorous mammals: Animals such as wolves, lions, and tigers that feed on herbivores like deer, zebras, or gazelles.

Birds of prey: Species like eagles, hawks, and owls that consume small mammals, reptiles, or other birds.

Carnivorous fish: Fish like pike, barracuda, or bass that prey on smaller fish or aquatic invertebrates.

Predatory insects: Insects such as spiders, mantises, or dragonflies that feed on other insects, including herbivorous insects.

In a specific food web, the identification of secondary consumers would depend on the specific organisms present and their feeding interactions. It would be necessary to analyze the trophic relationships among the organisms in the food web to determine the secondary consumers accurately.

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\(CH_{3}COO\) -     It is a weak base It is the conjugate base of the acid \(CH_{3}COOH\).

\(CH_{3}COOH\)  ethanoic acid, acetic acid. It partially ionises in water hence it is a weak acid It has a very low dissociation constant alpha hence equilibrium is set up in the aqueous solution. It is a reversible process

\(CH_{3}COO-\) can accept H+ to form back \(CH_{3}COOH\).

Ethanoic acid dissociates to form ethanoate ions and hydronium ions.

Here ethanoate ion acts as a conjugate base. It will be having a PH above 7  hence it can be considered a weak base

\(CH_{3}COOH\)  +  \(H_{2} O\) →  \(CH_{3}COO-\)   +   \(H+\)  \(H_{3} O\)

alpha  <<< 1

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The different chemicals emit different colors of light because it will depends on the energy of the photons emitted.

The color of the light emitted will depends on the energy of the photons that is emitted. The emission of the photons take place when the electron jump from the higher energy state to the lower energy state. When the electrons comes to the lower energy state it will emits photons in form of the light.

The light emitted by the photons are different for the different chemicals because no two elements will have the same set of the energy levels.

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Answer:

Potassium ions, sodium ions, and calcium ions?

Explanation:

Answer:

glucose and/or protein

Explanation:

Explanation:

hope it make sense to u :)

ur best try is to copy and paste and change some words.

When a pi bond is formed, one hydrogen is lost from each of the atoms involved in the bond formation. This is because a pi bond is formed when two parallel p orbitals overlap sideways, and each p orbital contains one electron.

Therefore, in order for the electrons to form a bond, one electron from each atom must be involved, leading to the loss of one hydrogen atom from each atom.

When a pi bond is formed, two hydrogen atoms are lost. This occurs because the pi bond involves the sharing of two additional electrons between two atoms, typically carbon, which results in the need to release two hydrogen atoms to maintain proper valence.

Valence is a term used in chemistry and physics to describe the number of electrons that an atom can gain, lose, or share in order to form a chemical bond with another atom. The valence of an atom is determined by the number of electrons in its outermost shell, or valence shell.

The valence of an atom is important because it determines its ability to form chemical bonds with other atoms. Atoms with a low valence (i.e. only a few electrons in their outermost shell) tend to lose those electrons and become positively charged ions, while atoms with a high valence (i.e. many electrons in their outermost shell) tend to gain electrons and become negatively charged ions.

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a) The sphere emits thermal radiation at a rate of 139.75 Watts.

b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.

c) The sphere's net rate of energy exchange is 102.09 Watts.

To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.

a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:

Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))

Plugging in the given values:

Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)

Emitting Rate ≈ 139.75 Watts

b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:

Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))

Plugging in the given values:

Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)

Absorbing Rate ≈ 37.66 Watts

c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:

Net Rate = Emitting Rate - Absorbing Rate

Net Rate = 139.75 Watts - 37.66 Watts

Net Rate ≈ 102.09 Watts

Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.

Note: The units for all the rates are Watts.

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Answer:

2.14g of oxygen

Explanation:

10g x 1mol/55.85mol x 3mol (o)/ 4mol (Fe) x 16g = 2.14g

Answer:

C. the motion of gas particles.

Explanation:

The kinetic molecular theory is a simple but very effective model that effectively explains ideal gas behavior. The theory assumes that gases consist of widely separated molecules of negligible volume that are in constant motion, colliding elastically with one another and the walls of their container with average velocities determined by their absolute temperatures.

Answer:

The answer is thermal energy

Explanation:

A glacier moving a boulder is an example of  erosion.

There are two basic ways that glaciers generate erosion: pulling and abrasion. A glacier picks up boulders and other sediments through the process of plucking. They sink to the glacier's base and are swept away by the moving ice. A glacier scrapes the underlying rock through the process of abrasion.

The process of a glacier scraping underlying rock is called abrasion. A glacier's sides and bottom include silt and boulders that have been frozen in the ice and function as sandpaper. They destroy the rock. They might also leave dings and grooves that indicate the glacier's motion.

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When an oceanic plate is subducted beneath another plate during a convergent boundary, the rock that can likely result is metamorphic rock.

Explanation:

This occurs because as the oceanic plate is subducted, it is forced deep into the Earth's mantle where it is subject to extreme heat and pressure. This heat and pressure cause the minerals and rocks in the oceanic plate to recrystallize, creating metamorphic rocks.

Examples of metamorphic rocks that can be formed from subducted oceanic plates include blueschist, eclogite, and amphibolite. These rocks can then be brought to the surface through a process called uplift and can be studied to understand the geological history of the area.

~ Zeph