How many phosphorus atoms are there in phosphorus pentafluoride?.

Answer:

the average weight of a frog is 0.8 ounces, so your answer would be 4

Answer:

one hundred and one

Explanation:

Answer:

A physical property is any property that is measurable, whose value describes a state of a physical system.

Explanation:

-color

-density

-volume

The missing part of the equation is the conversion factor, which is 1 m^3/0.060 cm^3. Therefore, the equation should be (0.060 cm^3)•(1 m^3/0.060 cm^3) = ? m^3.

An equation is a mathematical statement expressing the equality or inequality of two expressions. It is typically represented by a mathematical symbol (such as an equals sign or inequality sign) and two numerical expressions separated by the symbol. An equation is used to describe a relationship between two or more unknowns, and to provide a way to solve for one of the unknowns in terms of the others. Equations are essential tools in mathematics, science, and engineering and are used to solve a variety of problems. They are also used to describe the behavior of physical systems, such as electrical circuits, chemical reactions, and the motion of objects.

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Answer:  = 0.01

Explanation:1 centiliters = 0.01 liters using the online calculator for metric conversions.

Answer:

C) Aging

Explanation:

You can't stop that or change the rate that you age at. its inevetable :D

Answer :

A.) Kinetic energy

Explanation:

When work is either added to or taken away from a system, it forces the kinetic energy to change.

The work-energy theorem states : change in kinetic energy of an object is equal to the work done on the object

[ I took the quiz already on Edgenuity and received 100% ]

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Answer:

Kinetic energy

Explanation:

Edge 2020

Answer:

helium

Explanation:

By losing an electron, they look like the noble gas that immediately precedes them on the periodic table.

Answer: argon

Explanation:

using the last clue “avg atomic mass of 3.33x greater than carbon-12” we can deduce the atomic mass of the element is 12x3.33=40(2sf) hence its argon. we can further confirm from third clue that it is a noble gas hence unreactive

Answer:

The oxygen will occupied 84.7 L.

Explanation:

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P*V = n*R*T

where P is the gas pressure, V is the volume that occupies, T is its temperature, R is the ideal gas constant, and n is the number of moles of the gas. The universal constant of ideal gases R has the same value for all gaseous substances.

In this case:

Replacing:

768 mmHg* V= 3.5 mol* 62.36 \(\frac{mmHg*L}{mol*K}\) *298 K

Solving:

\(V=\frac{3.5 mol*62.36\frac{mmHg*L}{mol*K}*298 K }{768 mmHg}\)

V= 84.7 L

The oxygen will occupied 84.7 L.

All possible types of intermolecular forces that can form between particles of :

(a) CS2: London dispersion forces

(b) CH2Br2: Dipole-dipole interaction and H-bonding

What are intermolecular forces?

Intermolecular forces, frequently abbreviated to IMF, are the appealing and repulsive forces that stand up among the molecules of a substance. These forces mediate the interactions among man or woman molecules of a substance. Forces additionally exist among the molecules themselves and those are together called intermolecular forces. Intermolecular forces are specifically answerable for the bodily traits of the substance. There are 5 varieties of intermolecular forces. They are as follows-

Thus, al the types of intermolecular forces possible between particles of :

(a) CS2: London dispersion forces

(b) CH2Br2: Dipole-dipole interaction and H-bonding

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The approximate resistance value at 45 degrees Celsius is around 5.8 ohms.

To calculate the value of the resistance temperature coefficient at 45 degrees Celsius using linear approximation, we can use the formula:

R(T) = R0 + α(T - T0),

where R(T) is the resistance at temperature T, R0 is the resistance at a reference temperature T0, α is the resistance temperature coefficient, and (T - T0) is the temperature difference.

Given that the resistance at 25 degrees Celsius is 5 ohms (R0 = 5) and the resistance at 50 degrees Celsius is 6 ohms (R(T) = 6), we can calculate the value of α.

6 = 5 + α(50 - 25),

Simplifying the equation:

1 = 25α,

Therefore, α = 1/25 = 0.04 ohm/degree Celsius.

Using the linear approximation, we can approximate the value of the resistance at 45 degrees Celsius:

R(45) = 5 + 0.04(45 - 25) = 5 + 0.04(20) = 5 + 0.8 = 5.8 ohms.

Therefore, the value of the resistance at 45 degrees Celsius is approximately 5.8 ohms.

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Corrosion is the process of chemical or electrochemical attack of materials by their external environment.

The tendency/resistance of different metals to corrosion largely depends on the composition of the metal. Iron and steel corrode in the presence of oxygen due to oxidation, while some metals such as chromium, nickel and molybdenum provide a protective layer of oxide film on the surface of the metal which is then resistant to corrosion. Other metals such as aluminum and zinc form sacrificial oxide layers which corrode and protect the metal from becoming completely damaged.

To "fix" hydrogen means to convert it from its gaseous form (H₂) into a chemically usable form or compound.

Fritz Haber's method for fixing hydrogen, known as the Haber-Bosch process, involves combining hydrogen (H₂) with nitrogen (N₂) from the air to produce ammonia (NH₃) through a catalytic reaction. This ammonia can then be used to produce fertilizers, explosives, and other important chemicals.

Fritz Haber's method is considered the most important invention of the twentieth century because it revolutionized agriculture and food production. The production of ammonia-based fertilizers made it possible to significantly increase crop yields, addressing global food shortages and supporting a growing population.

This process had a profound impact on global agriculture and played a crucial role in the Green Revolution, which helped alleviate hunger and improved living standards worldwide.

Additionally, the Haber-Bosch process also enabled the production of synthetic materials, such as plastics and fibers, that have transformed various industries and contributed to technological advancements.

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Answer:

Any polar substance

Explanation:

We know that non polar substances wont dissolve in water because they do not react properly with water molecules, any polar substance would dissolve in water and float in oil.

An unknown substance dissolves in water but separates and floats in oil is any polar substance.

Polar substance are defined as those whose bonding with atoms like nitrogen, oxygen, or sulfur has resulted in discrete positive and negative charge areas.

It can also be defined as an electrical pole is typically created when a molecule has more positive charges on one end than negative charges on the other, forming an electrical pole.

Non polar substances are defined as a molecule that lacks charges at the ends because its electrons are evenly distributed and those that cancel one another out symmetrically.

It is can also be defined as in covalent compounds, there is no change in electronegativity.

Thus, an unknown substance dissolves in water but separates and floats in oil is any polar substance.

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Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

The primary problem described by this ABG information is metabolic acidosis.This is due to the low HCO3 levels and the resulting low pH.

Metabolic acidosis is a condition in which there is an abnormal accumulation of acid in the body. This occurs when the body produces too much acid or does not eliminate it quickly enough. It can also occur when the kidneys are not able to adequately eliminate acid from the body. Symptoms of metabolic acidosis include fatigue, confusion, nausea, vomiting, and rapid breathing. In severe cases, it can lead to coma and even death. Treatment of metabolic acidosis involves correcting the underlying cause and treating the symptoms. Dietary changes, medications, and lifestyle changes can all help to reduce the accumulation of acid in the body. It is important to speak to a doctor if you think you may be suffering from metabolic acidosis.

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The system must be structured to draw more energy to work.

Moreover, From second law of thermodynamics, The entropy is a thermodynamic property which represents unavailability of the internal energy of the system for conversion into mechanical energy. So, lower entropy is desirable to extract more internal energy as work done.

Entropy is parameter of orderliness. High entropy represents more chaos and low entropy represents more ordered state. So, ​​​​​​The system is orderly.

Structured system is more ordered than uniform system. Thus, structured system has lower entropy than uniform system. So, The system must be structured to draw more energy to work.

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​​​​​

28% of oxygen concentration is the client receiving via nasal cannula

A nasal cannula is a medical device to provide supplemental oxygen therapy to people who have lower oxygen levels. There are two types of nasal cannulas: low flow and high flow.

The device has two prongs and sits below the nose. The two prongs deliver oxygen directly into your nostrils.

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Try 35% ethyl acetate to see the substance present in it is more polar ,which on increasing the concentration of ethyl acetate to give a second spot.

The acetate ester produced when acetic acid and ethanol react is termed as ethyl acetate. It functions as an EC 3.4.19.3 (pyro glutamyl-peptidase I) regulator, a metabolite, and a Saccharomyces cerevisiae metabolite in addition to being a polar aprotic solvent. It is a volatile organic chemical, an ethyl ester, and an acetate ester.

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The complete question is :

You use 25% ethyl acetate (an ester) in hexane to run a tlc and obtain a single round spot with an Rf of 0.9 for the main compound. What would you do?

Answer:

the 3rd option. negative feedback loops are initiated during childbirth.

Solid lead nitrate is heated and forms solid lead oxide, gaseous nitrogen dioxide, and oxygen then it form of decomposition reaction

Lead nitrate is a white color inorganic powder with the chemical formula Pb ( NO₃)₂ when Lead nitrate decomposes it produces Lead oxide a yellow colored oxide of  brown colored Nitrogen dioxide gas, and colorless Oxygen gas and also it gives yellow colors

When lead nitrate is heated it decomposes to form lead oxide, nitrogen dioxide and oxygen from the reaction, we can see that lead nitrate decomposes on heating and forms lead oxide, nitrogen dioxide and oxygen thus, lead nitrate on decomposition gives lead oxide, nitrogen dioxide and oxygen and the lead nitrate and when solid lead nitrate heated it decomposes to produce light yellow solid lead monoxide, reddish-brown nitrogen dioxide gas and colourless oxygen gas

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Sulfur has a lower ionization energy than phosphorus because of its larger atomic radius.

The ionization energy is the amount of energy needed to remove an electron from an atom or ion. The ionization energy increases as you move across a period from left to right. It decreases as you move down a group from top to bottom.The atomic radius of an atom is the distance between the center of the atom's nucleus and the outermost shell of its electrons. The atomic radius decreases as you move across a period from left to right. It increases as you move down a group from top to bottom.Sulfur and phosphorus are located in the same group of the periodic table, but sulfur has a larger atomic radius than phosphorus. This means that sulfur's outermost electrons are farther from its nucleus than phosphorus's outermost electrons. Because the outermost electrons of sulfur are farther away from the nucleus, it takes less energy to remove them than it does to remove phosphorus's outermost electrons. As a result, sulfur has a lower ionization energy than phosphorus.

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Answer:

B - To increase the rate of the reaction

Explanation:

Catalysts speed up the reaction without being reactants or products, so aren't used up in the reaction.

Answer:

atmosphere, break up

Explanation:

Answer:

Atmosphere, break up

Explanation:

In order to determine the activation energy, that is for a chemical reaction, the kinetic parameters that must be plotted are the reaction rate, k, versus the reciprocal of the absolute temperature, 1/T.

To determine the activation energy, ea, for a chemical reaction, the following kinetic parameters must be plotted:

1) The rate of the reaction as a function of temperature. This plot will allow for the determination of the Arrhenius activation energy, which is defined as the energy required to overcome the activation energy barrier.

2) The rate of the reaction as a function of the concentration of the reactants. This plot will allow for the determination of the activation energy of the reaction, which is defined as the energy required to break the bonds of the reactants.

3) The rate of the reaction as a function of the concentration of the products. This plot will allow for the determination of the activation energy of the reaction, which is defined as the energy required to form the bonds of the products.

Thus, the kinetic parameters that must be plotted are Reaction rate vs. temperature , Reaction rate vs. concentration and Reaction rate vs. time

From these plots, the activation energy can be determined by looking at the slope of the reaction rate vs. temperature plot. The higher the activation energy, the steeper the slope will be.

The activation energy is the slope of the line that results from this plot.Activation energy (Ea) is the minimum amount of energy that is required to initiate a chemical reaction. The activation energy is provided by the motion of the reactant molecules. When the reactant molecules collide, they must have enough energy to overcome the energy barrier that is created by the reaction's activation energy.

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Answer:

Regular, non-fluorescent colors appear to our eyes when objects absorb some wavelengths of light, and reflect others. For example, a yellow pencil looks yellow because its paint reflects the wavelength of yellow light, and absorbs the other wavelengths.Mar

347.69 grams of Fe are produced from 12.57 grams of\(H_2.\)

The chemical reaction between Fe and H2 is\(:Fe + H_2 -> FeH_2\)

To find out how many grams of Fe are produced from 12.57 grams of H2, we need to use stoichiometry. To do this, we need to first balance the equation. It's already balanced:\(Fe + H_2 -> FeH_2\) .Now, we need to convert 12.57 grams of H2 to moles.

To do this, we need to use the molar mass of \(H_2\), which is 2.02 g/mol:12.57 g.

\(H_2 * (1 mol H_2/2.02 g H_2) = 6.22 mol H_2\)

Now that we know we have 6.22 moles of \(H_2\), we need to figure out how many moles of Fe are needed to react with this amount of \(H_2\).

We can see from the balanced equation that 1 mole of Fe reacts with 1 mole of H2, so we need 6.22 moles of Fe:6.22 mol FeNow that we know how many moles of Fe we need, we can convert that to grams of Fe using the molar mass of Fe, which is 55.85 g/mol:

6.22 mol Fe × (55.85 g Fe/1 mol Fe)

= 347.69 g Fe.

Therefore, 347.69 grams of Fe are produced from 12.57 grams of \(H_2.\)

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Answer: B

Explanation:

There is an atom of one type of element and then two atoms of another type of element.

It takes energy to dissolve connections. Energy is released as a result of the creation of bonds.

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