A gas mixture of xe and ar has a total pressure of 12.20 atm. what is the mole fraction of xe, if the partial pressure of ar is 4.50atm?

In the given atomic model, the strong nuclear force occurs inside the nucleus. Option D is correct.

The strong nuclear force is one of the fundamental forces of nature and it acts on particles called quarks, which are the building blocks of protons and neutrons. This force is responsible for holding the nucleus of an atom together.

Inside the nucleus, protons and neutrons are tightly bound to each other by the strong nuclear force. It overcomes the electrostatic repulsion between the positively charged protons, preventing the nucleus from disintegrating. The strong nuclear force is extremely powerful but short-ranged, meaning it acts only at very short distances within the nucleus.

Outside the nucleus, in the electron cloud, other forces such as electromagnetic forces and gravitational forces dominate the interactions. However, within the nucleus, the strong nuclear force is responsible for binding the protons and neutrons together, maintaining the stability of the atomic nucleus.

Hence, D. is the correct option.

To know more about atomic model here

https://brainly.com/question/1100068

#SPJ4

--The given question is incomplete, the complete question is

"In the following atomic model, where does the strong nuclear force happen? A) outside a B) between a and b C) between b and c D) inside c."--

Answer: its D

Explanation: i just got the question right

In scientific notation, often known as power-of-10 notation, extremely big and small numbers are written. Scientists write very large numbers by express the numbers using scientific notation.

Numbers that are either too large or too little to be readily stated in decimal form can be expressed using scientific notation. It is also known as standard form in the UK and scientific form, standard index form, and standard form.

The main goal of scientific notation is to simplify computations using numbers that are abnormally big or tiny. The following examples demonstrate how all the digits in a number in scientific notation are relevant, since zeros are no longer utilized to set the decimal point.

When working with very big or very small numbers, scientists, mathematicians, and engineers employ scientific notation. Large and tiny numbers can be represented in a form that is simpler to read using exponential notation.

Thus, option D is correct.

To learn more about scientific notation, follow the link;

https://brainly.com/question/18073768

#SPJ5

The main answer to the question is: The test statistic is 51.20 and the critical values are 9.591 and 34.170.

To explain the main answer, we are conducting a hypothesis test to determine if the population standard deviation of the pH of rain is indeed 0.5, as suggested by the theory. The null hypothesis (H0) is that the population standard deviation is 0.5, while the alternative hypothesis (H1) is that the population standard deviation is not 0.5.

In this case, we are given a random sample of 21 rainy days, and the sample standard deviation is 0.8. To test the hypothesis, we need to calculate the test statistic, which is given by the formula: test statistic = [(sample standard deviation) - (hypothesized standard deviation)] / (sample standard deviation / sqrt(sample size)).

Plugging in the values, we get: test statistic = [(0.8 - 0.5) / (0.8 / sqrt(21))] = 51.20.

To determine the critical values, we need to look at the critical region associated with the given significance level (alpha) of 0.05. Since this is a two-tailed test, we divide the significance level by 2, resulting in an alpha of 0.025 for each tail. Using the degrees of freedom (n-1), which is 20 in this case, we can consult the t-distribution table or use a statistical software to find the critical t-values. For an alpha of 0.025 and 20 degrees of freedom, the critical t-values are approximately ±2.093.

Converting the t-values to critical values using the formula: critical value = (hypothesized standard deviation) + (t-value * (sample standard deviation / sqrt(sample size))), we get: critical values = 0.5 + (2.093 * (0.8 / sqrt(21))) = 9.591 and 0.5 - (2.093 * (0.8 / sqrt(21))) = 34.170.

Therefore, the correct answer is: The test statistic is 51.20 and the critical values are 9.591 and 34.170.

Learn more about: Standard deviation

brainly.com/question/13498201

#SPJ11

The reaction involved is the reaction of PbO with sodium carbonate (Na2CO3) to produce lead(II) carbonate (PbCO3) and sodium oxide (Na2O).

To prepare a solid sample of lead(II) carbonate, we can start with lead(II) oxide (PbO) as the starting material. The chemical equation for the reaction is:

PbO + Na2CO3 → PbCO3 + Na2O

To carry out the reaction, we first need to weigh out the required amount of PbO and Na2CO3 based on the stoichiometry of the reaction. The PbO and Na2CO3 are then mixed thoroughly and placed in a crucible. The mixture is heated in a furnace at a temperature of around 600-700°C for a few hours until the reaction is complete and the mixture has turned into a solid mass.

Once the reaction is complete, the crucible is removed from the furnace and allowed to cool to room temperature. The solid mass of PbCO3 is then carefully removed from the crucible, crushed to a fine powder, and stored in an airtight container for further use. This method is a simple and efficient way to prepare a solid sample of lead(II) carbonate from lead(II) oxide.

For more such questions on reaction

https://brainly.com/question/29470602

#SPJ11

Answer:

The atomic combinations can be matched to the appropriate functional groups as follows:

- A. C-O-C: C. Ester

- B. O=C-O-H: B. Carboxylic acid

- C. O=C-O-C: C. Ester

- D. C-O-H: A. Alcohol

Explanation:

The average atomic weight of silicon to be approximately 28.0855 amu, rounded to four significant figures.

To calculate the average atomic weight of silicon, we consider the natural abundance of each isotope and its corresponding atomic weight. By multiplying the abundance of each isotope by its atomic weight and summing up the values, we can obtain the average atomic weight of silicon.

We have three isotopes of silicon with their respective abundances and atomic weights:

Si-28 with 92.23% abundance and an atomic weight of 27.9769 amu.

Si-29 with 4.68% abundance and an atomic weight of 28.9765 amu.

Si-30 with 3.09% abundance and an atomic weight of 29.9738 amu.

To calculate the average atomic weight, we multiply the abundance of each isotope by its atomic weight and sum up the values:

Average atomic weight = (abundance of Si-28 * atomic weight of Si-28) + (abundance of Si-29 * atomic weight of Si-29) + (abundance of Si-30 * atomic weight of Si-30)

= (0.9223 * 27.9769) + (0.0468 * 28.9765) + (0.0309 * 29.9738)

Calculating this expression, we find the average atomic weight of silicon to be approximately 28.0855 amu, rounded to four significant figures.

To learn more about atomic weight click here:

brainly.com/question/31832331

#SPJ11

Answer:

matter should be the answer

Explanation:

Hope this helps!

Answer:

matter because matter makes up everything in the world EVERYTHING like this computer ri am typing on? matter. what ever device you are using to view this? matter. everything is made of matter. matter is starting to sound weird now so I'm gonna stop saying it and this is the end of the answer remember THAT ANSWER IS MATTERR!!!!!

The mass of potassium chlorate is 0.3439 to generate 114.0 L  \(O_{2}\) at 0.720 atm and 291K

The decomposition of potassium chlorate is represented as

\(2KClO_{3} (s) - > 2KCl(s) + 3O_{2} (g)\)

Given, Volume = 114.0 L

pressure = 0.720 atm

temperature = 291 K

According to the Ideal gas Equation

Pv = nRT

\(n=\frac{Pv}{RT}\)

\(n=\frac{0.720*114.0}{0.82*291}\)

n= 0.3439

To know more about Ideal Gas visit:

https://brainly.com/question/25290815

#SPJ4

Answer:

I think the answer could be 13 i hope this helps

O D. (6 + 4)÷2-1×3

the cacuclator gives u the answer to this

Explanation:

mass number= atomic number + no of neutrons

35= 17 + no of neutrons

no of neutrons = 18

A scientific hypothesis is a theory that offers a speculative explanation for a phenomenon or a specific group of related events that have been observed in the natural world.

A hypothesis is a speculative response to an issue in science. A testable hypothesis is one that can be confirmed or refuted through experimentation, data gathering, or experience. The scientific method can only be used to design and carry out experiments based on testable hypotheses. A hypothesis is a provisional assertion that suggests one or more potential explanations for a phenomena or event. An effective hypothesis is a verifiable claim that might also contain a prediction. A theory is not the same as a hypothesis. Theories are broad explanations built on a lot of evidence.

Learn more about Hypothesis here-

https://brainly.com/question/13025783

#SPJ9

Answer:

quartz (SiO2)n

Explanation:

Melting point is defined as the temperature or point at which the substances change its state from solid to liquid.

Quartz (SiO2)n has high melting point than O2 because Quartz (SiO2)n is found in the form of hard, crystalline mineral that is made up of silicon and oxygen atoms having strong covalent bonds between all the atoms. So, a lot of energy is required to break the bond between the atoms and it has a high melting point.

Hence, the correct answer is quartz (SiO2)n.

From the samples on the slide made up of tiny cells, Terry can conclude that the cells were produced by other cells.

Cell production occurs often in a human protein, such as yeast, bacteria, or mammalian cells in culture, which then start producing the protein in large quantities. A new organism is created during the process of splicing a gene into a production cell.

Cells are often produced from other cells by the process of replication. All living things, from microorganisms to humans, rely on cells for structure and function. Scientists regard them as the tiniest form of life. Cells contain the biological machinery that produces the proteins, chemicals, and signals that are responsible for everything that occurs within our bodies.

Learn more on cell production here: https://brainly.com/question/23117462

#SPJ1

Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

For more such questions on hydrocarbon visit:

https://brainly.com/question/21281906

#SPJ8

Myosin drives muscle contraction, insulin regulates blood sugar, hemoglobin transports oxygen, and collagen supports tissues. These proteins are vital for physiological functions in the body.

Of the molecules listed, three are proteins, while one is a fibrous structural protein:

1. Myosin: Myosin is a motor protein that plays a crucial role in muscle contraction and movement. It is responsible for the sliding of muscle fibers and the generation of force in muscle cells.

2. Insulin: Insulin is a peptide hormone that regulates blood sugar levels. It is produced by the pancreas and helps to control glucose uptake by cells, promoting its storage as glycogen in the liver and muscles, and regulating protein and fat metabolism.

3. Hemoglobin: Hemoglobin is a protein found in red blood cells that is responsible for transporting oxygen from the lungs to the tissues throughout the body. It binds to oxygen in the lungs and releases it in areas with lower oxygen concentrations.

4. Collagen: Collagen is a fibrous protein that provides structural support to various tissues, including the skin, tendons, ligaments, and bones. It contributes to the strength, elasticity, and integrity of these tissues.

These proteins play important roles in various physiological processes, contributing to muscle function, metabolic regulation, oxygen transport, and tissue structure.

To know more about proteins refer here :    

https://brainly.com/question/28503702#

#SPJ11  

Complete question :

Identify the proteins in the following list of molecules.

1. Myosin

2. Insulin

3. Hemoglobin

4. Collagen

Proteins are biological molecules made of chains of amino acids. They perform many functions in organisms as determined by their amino acid composition. There are various types of proteins with diverse roles, and methods such as proteomic analysis are used to study them.

Proteins are large biological molecules comprised of long chains of smaller molecules known as amino acids. These proteins perform a plethora of functions within organisms, from transporting molecules across cell membranes to replicating DNA and catalyzing metabolic reactions. The specific functionality and properties of proteins are determined by the combination of amino acids that compose them.

There are several types of proteins which include but are not limited to structural proteins, regulatory proteins, contractile proteins, protective proteins, transport proteins, storage proteins and enzymes. Some integral proteins also serve dual roles as both a receptor and an ion channel. For example, on nerve cells, there are receptors that bind neurotransmitters like dopamine which leads to a chemical reaction within the cell.

Proteomic analysis techniques like  mass spectrometry and X-ray crystallography are often used to study, identify, and analyze the characteristics and structure of a protein.

https://brainly.com/question/36537530

#SPJ11

The statement is true, because, The Balmer series of lines for the hydrogen atom are found only in the visible region of the spectrum.

This is because the energy of the photons emitted during the transitions from the higher energy levels to the lower energy levels of the hydrogen atom is in the visible range of the electromagnetic spectrum.

The Balmer series of lines is a set of spectral lines in the visible region of the electromagnetic spectrum emitted by hydrogen atoms. The Balmer series is named after Johann Balmer, who first identified the spectral lines in 1885.

Learn more about The balmer series of lines:

https://brainly.com/question/15700855

#SPJ4

The reagent that would not react with stearic acid is Lithium Aluminium Hydride (LAH).

Stearic acid is a saturated fatty acid consisting of eighteen carbon atoms. In organic chemistry, stearic acid is a common reagent that reacts with other reagents to create a range of useful compounds. In this question, we will discuss which of the following reagents would not react with stearic acid.The four reagents given are: H2, Ni; SOCl2; CH3MgI; NH3/H2O; and LAH.LAH (Lithium Aluminium Hydride) is the reagent that would not react with stearic acid. Lithium Aluminium Hydride (LAH) is a strong reducing agent that reduces carboxylic acids into alcohols. However, stearic acid, being a saturated fatty acid, does not contain any double bonds that can be reduced by the strong reducing agent LAH. Therefore, it does not react with stearic acid.The other reagents mentioned such as H2, Ni, SOCl2, CH3MgI, NH3/H2O all react with stearic acid, and would give different products depending on the reaction conditions and reagents used. Hence, the reagent that would not react with stearic acid is Lithium Aluminium Hydride (LAH).

Learn more about reagent here,

https://brainly.com/question/31848964

#SPJ11

Answer:

accurate

Explanation:

Answer:

Closed-toe shoes, long pants, a lab coat, safety glasses with side shields or splash goggles, and gloves.

Explanation:

Answer:

A heterogeneous mixture is simply any mixture that is not uniform in composition - it's a non-uniform mixture of smaller constituent parts. By contrast, a mixture that is uniform in composition is a homogeneous mixture.

Answer:

Delocalized electrons also exist in the structure of solid metals. Metallic structure consists of aligned positive ions (cations) in a "sea" of delocalized electrons. This means that the electrons are free to move throughout the structure, and gives rise to properties such as conductivity.

Answer:

bu bir kimya sorusu sanırim

Answer:

1.37dm³

Explanation:

To solve this problem, let us write the reaction expression:

               2KClO₃  →   2KCl  + 3O₂

Now, mass of KClO₃ is 5g, let us find the number of moles;

  Number of moles  = \(\frac{mass}{molar mass}\)  

  Molar mass of KClO₃  = 39 + 35.5 + 3(16) = 122.5g/mol

 Now;

 Number of moles  = \(\frac{5}{122.5}\)   = 0.04mole

  So;

       2 moles of KClO₃  will produce 3 moles of oxygen gas

       0.04 mole of KClO₃  will produce \(\frac{3 x 0.04} {2}\)   = 0.06moles

At STP;

        1 mole of gas has  a volume of 22.4dm³

       0.06 mole of oxygen gas will have a volume of 22.4 x 0.06 = 1.37dm³

Answer:

El Niño refers to the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific. It represents the warm phase of the ENSO cycle. La Niña refers to the periodic cooling of sea-surface temperatures across the east-central equatorial Pacific.

The total number of joules of heat energy needed to raise the temperature of 10 grams of water from 20°C to 30°C is 418.4 J. The specific heat capacity of water is 4.184 J/g·°C.

To find the total heat energy needed, we can use the formula:

Q = m·c·ΔT

where:

Q = heat energy (in Joules)

m = mass of the water (in grams)

c = specific heat capacity of water (4.184 J/g·°C)

ΔT = change in temperature (in °C)

Substituting the values given, we get:

Q = 10 g × 4.184 J/g·°C × (30°C - 20°C)

Q = 418.4 J

Therefore, the total number of joules of heat energy needed to raise the temperature of 10 grams of water from 20°C to 30°C is 418.4 J.

Learn more about heat energy

https://brainly.com/question/29210982

#SPJ4

The function of a power source in an electric circuit is to  provide a steady flow of electrons.

An electric circuit comprises of individual electronic components like resistors, diodes,transistors , capacitors,etc. which are connected to each other by means of wires through which electric current flows.It can also be referred to as an electronic circuit.

It usually comprises of at least one active component . The combination of wires and simple and complex components allows operations to be performed, amplification of signals, displacement of data and performing of computations.

Learn more about electric circuit,here:

https://brainly.com/question/29032441

#SPJ1

Answer:  a steady flow of electrons

Explanation:

Answer:

Molar mass and Mass

Explanation:

The relationship between mass and number of moles is given as;

Number of moles = Mass / Molar mass

Mass = 1.6 g

Molar mass of HCl = ( 1 + 35.5 ) = 36.5 g/mol

Number of moles = 1.6 g / 36.5 g/mol

Number of moles = 0.0438 mol

Answer:

The answer to your question is D. During anaerobic respiration, the formation of lactic acid results in the release of two ATP molecules. This is in contrast to aerobic respiration, which produces 38 ATP molecules.

give me brainiest

Answer:

Is 40.10 ml

Explanation:

i've dome it before

According to molar concentration, 1.6 grams of solid NaOH is required to achieve this solution.

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.

On substitution of values,mass= 0.10×40×0.4=1.6 g.

Thus,1.6 grams of solid NaOH is required to achieve this solution.

Learn more about molar concentration,here:

https://brainly.com/question/21841645

#SPJ2