Selena breaks a piece off the end of a stick she found and notes that’s a physical change has occurred which of the following properties of the remaining piece of the stick has changed

The probability that a person has the disease given that the test indicates the presence of the disease is approximately 0.9968

To calculate the probability that a person has the disease given that the test indicates the presence of the disease, we can use Bayes' theorem.

Let's denote:

A = Event of having the disease

B = Event of the test indicating the presence of the disease

We are given the following probabilities:

P(A) = 0.03 (3% of the population actually has the disease)

P(B|A) = 0.93 (the test indicates the presence of the disease 93% of the time when the disease is actually present)

P(B|not A) = 0.004 (the test indicates the presence of the disease 0.4% of the time when the disease is not present)

We need to find P(A|B), the probability that a person has the disease given that the test indicates the presence of the disease.

Applying Bayes' theorem:

\(P(A|B) = (P(B|A) * P(A)) / P(B)\)

To calculate P(B), we can use the law of total probability:

\(P(B) = P(B|A) * P(A) + P(B|not A) * P(not A)\)

\(P(not A) = 1 - P(A) = 1 - 0.03 = 0.97\)

Substituting the values into the equation:

\(P(B) = (0.93 * 0.03) + (0.004 * 0.97) ≈ 0.0279\)

Now, calculating P(A|B):

\(P(A|B) = (0.93 * 0.03) / 0.0279 ≈ 0.9968\)

Therefore, the probability that a person has the disease given that the test indicates the presence of the disease is approximately 0.9968 (rounded to four decimal places).

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Decane react with 31/2 O₂  to yield 10CO₂ and 11H₂O.

Reaction is given below:-

C₁₀H₂₂ + 31/2 O₂ → 10CO₂ + 11H₂O

Hence, Decane react with 31/2 O₂  to yield 10CO₂ and 11H₂O.

Molecular oxygen, O₂ is a diatomic molecule that is composed of two oxygen atoms held together by a covalent bond. Molecular oxygen is essential for life, as it is used for respiration by many organisms.

Diatomic means that an atom cannot exist by itself. There is no such thing as lone O atoms floating around the atmosphere. Oxygen exists as O₂ .

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Answer: Ionic attractions

Explanation:

Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions.

Answer:

metallic bond

Explanation:

Metallic bonds are the attraction between a positive metal ion and the electrons surrounding them.

This bond is found in metals and their alloys. They are interatomic forces.

Explanation:

1.A physical property is an aspect of matter that can be seen or measured without changing its chemical composition. Examples of physical properties include color, molecular weight, and volume.

A chemical property is observed only by changing the chemical identity of a substance. In other words, the only way to detect a chemical is to perform a chemical reaction.

2.This property measures the ability of chemical change. Examples of chemical properties are reactivity, flammability, and oxidation state.

The physical properties of a substance do not involve any chemical reaction. These include density, color, mass, hardness, freezing points, electrical properties, and the like.

Chemical properties include the reaction of chemicals with other substances. These reactions lead to the disappearance of the raw material and the appearance of new materials that have different physical and chemical properties.

3.Chemical properties can be compared to physical properties; On the contrary, they are recognizable without changing the structure of matter. However, for many properties in the field of physical chemistry and other disciplines at the boundary between chemistry and physics, the distinction can be a matter for the researcher's point of view. The properties of materials, both physical and chemical, can be seen as metaphysical; This means that it is secondary to the principle of tangible reality. Multiple metamorphic layers are also possible.

Answer:

15 grams

Explanation:

Answer:

Explanation:

The reaction you provided is a balanced chemical equation, meaning that for every mole of LiNO3 produced, an equal amount of PbSO4 is produced. However, since you only know the amount of LiNO3 produced (5.5 grams), you can use stoichiometry to find the amount of PbSO4 produced.

First, you need to convert the amount of LiNO3 to moles:

5.5 g LiNO3 / 6.939 g/mol = 0.796 mol LiNO3

Next, using the stoichiometry of the reaction, you can find the number of moles of PbSO4 produced:

0.796 mol LiNO3 * (1 mole PbSO4 / 2 moles LiNO3) = 0.398 moles PbSO4

Finally, you can convert the number of moles of PbSO4 to grams:

0.398 moles PbSO4 * 247.77 g/mol = 98.42 g PbSO4

So, if 5.5 grams of LiNO3 were produced, then 98.42 grams of PbSO4 would be produced.

Answer:

Explanation:

Answer:

A

Explanation:

APEX

The sulfur dichloride has bent shape.

i.e, option A is correct one.

The three dimension (3D) representation of molecule by excluding lone pair of electron is called shape of the molecule.

The geometry and shape of the molecule is determined by using some theories like valence bond theory, hybridization and VSPER theory.

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Dalton's experiments advanced our understanding of the atom without the use of sophisticated scientific tools that are available today.

In the late 18th and early 19th centuries, Dalton carried out a series of experiments that led him to propose the atomic theory, which revolutionized the way scientists thought about matter.

Despite his lack of access to modern instruments, Dalton was able to make several important observations about the behavior of gases, which led him to propose that all matter is composed of small, indivisible particles called atoms. Dalton also suggested that atoms of different elements have different properties and combine in fixed ratios to form compounds.

While Dalton's atomic theory has been modified and refined over the years, his experiments laid the foundation for our understanding of the structure and behavior of matter. Dalton's work demonstrates the importance of careful observation and deduction in scientific inquiry, even in the absence of advanced technology.

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The five correct steps on oxidative decarboxylation of pyruvate are:

These steps are correct in the process of oxidative decarboxylation of pyruvate, because they describe the complete process of pyruvate decarboxylation, from the initial conversion of pyruvate to hydroxyethyl-TPP, to the transfer of the acetyl group to CoA, to the reoxidation of FADH2. This sequence of steps ensures that the energy from the oxidation of pyruvate is captured and stored as energy-rich molecules, such as NADH and acetyl-CoA.

Is a type of metabolic reaction in which a carboxylic acid is converted into an aldehyde, alcohol, or ketone by the addition of an oxidizing agent, such as oxygen or a metal compound.

This reaction involves the removal of a carboxyl group (COOH) and the addition of an oxygen atom (O). The resulting product contains either an aldehyde, alcohol, or ketone group, depending on the starting material.

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The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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(a) When electrons are in their lowest energy state, we say that they are in _________.

(b) Sometimes, when ________ energy such as ________ or electricity is applied to the atom, the electrons absorb energy and transition to an _________ state.

(c) The electrons can not sustain this higher energy state for so long, so eventually ________ occurs.

(d) As a result, the electrons release energy in the form of a ______ and return back to ____.

(e) The jump between the high energy state to a lower energy state is called a _________.

(a) Ground State

(b) higher energy , excited state

(c) unstability

(d) light , ground state

(e) excited state absorption

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The elements that are most likely to have multiple oxidation states are transition metals. This is because they have partially filled d orbitals which allow for a range of oxidation states.

For example, iron can have oxidation states of +2, +3, +4, and +6, while manganese can have oxidation states ranging from -3 to +7. Other elements that can have multiple oxidation states include nonmetals such as sulfur and phosphorus.

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Answer:

The baby's get there traits from their parents and ancestors

When Aaron took Organic Chemistry he discovered that the work was too difficult for him. That is, the level of difficulty was very high for Aaron.

Organic chemistry is the branch of chemistry that deals with the compounds of carbon and hydrogen, known as organic compounds. These compounds are widely found in nature, and can be either naturally occurring or man-made. Organic chemistry is concerned with the structure, properties, and reactions of organic compounds, as well as the preparation and isolation of these compounds from natural sources. It also includes the study of synthetic organic compounds and their application in various fields such as medicine, agriculture, and industry. Organic chemists use a variety of methods and techniques to study the structure of organic compounds and understand their behavior in different environments.

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Explanation:

They have a directly proportional relationship.

i.e.

when one of them varies in magnitude, the others will also vary directly.

Quantities expressed as products of each other are always inversely proportional & those expressed as quotients are directly proportional with each other.

KE = 1/2mv^2

Thus, we know that m & v in KE are inversely related.

Inverse proportionality - when m increases, v decreases. & vice versa.

Direct proportionality - when v increases KE also increases

If Temperature increases then the probability of atoms to randomly collide with each other increases rapidly.

the rapidity of these atoms result from the increase in speed(v). since v & KE have a direct r/n ship, KE also increases. as a result the atoms get a relatively high freedom of movement compared to that of those in solids.

Answer:

It would be Container 3

Explanation:

Each of the containers has the same amount of salt.  Salinity refers to salt level.  Since the question is asking for the container with the greatest salinity, you are looking for the container with the least water (because it will be the saltiest out of all of them).  Container 3 has the least water.

Hope this helps :)

3 has less water so its saltier

17.0 mL of the 2.00 M sodium sulfate solution is required to completely precipitate all of the barium in the 170.0 mL of 0.200 M barium nitrate solution.

To determine the amount of sodium sulfate solution required to completely precipitate all of the barium in the given solution, we need to use the equation:
Ba(NO_{3})_{2} + Na_{2}SO_{4} -> BaSO_{4} + 2NaNO_{3}
This reaction shows that one mole of barium nitrate reacts with one mole of sodium sulfate to form one mole of barium sulfate, which is insoluble and will precipitate out of the solution. Therefore, the amount of sodium sulfate needed can be calculated based on the number of moles of barium nitrate present.
Using the equation C1V1 = C2V2, where C1 and V1 are the concentration and volume of the barium nitrate solution, respectively, and C2 and V2 are the concentration and volume of the sodium sulfate solution, respectively, we can solve for V2:
(0.200 M) (170.0 mL) = (2.00 M) V2
V2 = 17.0 mL
Therefore, 17.0 mL of the 2.00 M sodium sulfate solution is required to completely precipitate all of the barium in the 170.0 mL of 0.200 M barium nitrate solution.

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Milk

Explanation:

because milk is very thick youknow here I go

Answer:

half-life is 3.67s

Explanation:

The general law of the second-order reaction is:

\(\frac{1}{[A]}=\frac{1}{[A]_0}+kt\)

As after 90.0s, the concentration of NO2 decreases from 0.500M to 0.0196M:

\(\frac{1}{[0.0196]}=\frac{1}{[0.500]}+k*90.0s\)

49.02M⁻¹ = K*90.0s

0.5447M⁻¹s⁻¹ = K

Now, half-life, t1/2 is:

\(t_{1/2}=\frac{1}{K[A]_0}\)

Half-life is:

t(1/2) = 1 / (0.5447M⁻¹s⁻¹*0.500M)

The product of photodissociation of molecular oxygen is two separate oxygen atoms. Photodissociation occurs when a molecule absorbs a photon of light with enough energy to break the chemical bond holding the atoms together.

In the case of oxygen, the bond between the two oxygen atoms is broken, resulting in two highly reactive oxygen atoms. These oxygen atoms can react with other molecules in the atmosphere, such as nitrogen, to form various oxides. This process plays an important role in atmospheric chemistry and can lead to the formation of ozone, which is both beneficial and harmful to life on Earth.

Photodissociation of molecular oxygen (O2) refers to the process where O2 molecules absorb energy from sunlight and break apart into individual oxygen atoms. The primary products of this process are two oxygen atoms (O), which can react with other molecules in the atmosphere. For example, these oxygen atoms can combine with other O2 molecules to form ozone (O3), an essential component of Earth's stratosphere. In summary, the products of photodissociation of molecular oxygen are individual oxygen atoms, which play a vital role in various atmospheric reactions and the formation of ozone.

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Answer:

Explanation:

16.7 inches [1 foot / 12 inches] [1 yard / 3 feet] Notice how the units cancel each other out. You do have numbers in the denominator. What you get, looks like this

16.7

------

(12 * 3)

16.7 / 36

0.4639 yrds

Atoms form positive ions by losing electrons or negative ions by gaining electrons through a special type of chemical combination called electrovalent or ionic combination.

It follows that metals are electropositive elements which donates its valence electrons to the nonmetals. The atoms which donates its electrons become positively charged while the species that recieve electrons become negatively charged.

In the formation of sodium chloride, sodium donates its 1 valence electron to chlorine become positively charged; Na+ and chlorine which recieves the electron to add to it's 7 valence electrons become negatively charged; Cl-

Na + Cl ---- Na+Cl-

So therefore, atoms form positive ions by losing electrons or negative ions by gaining electrons through a special type of chemical combination called electrovalent or ionic combination.

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In the Apollo lunar module, the balanced equation for the given reaction is   2 N₂H₄ (g) + N₂O₄ (g) ⇒ 3 N₂ (g) + 4 H₂O (g)

Option 4 is correct.

Balanced equation when N₄H₄ reacts with dinitrogen tetroxide gas to form gaseous nitrogen and water vapor

        2 N₂H₄ (g) + N₂O₄ (g) ⇒ 3 N₂ (g) + 4 H₂O (g)

             reactant side                            product side

A compound condition is fundamental to have the option to foresee the overall measures of substances that are framed and consumed for a specific response. We use the appropriate chemical formulas and stoichiometric coefficients when writing chemical equations. In addition, the chemical equation's equilibrium must be maintained. A decent condition is a synthetic condition where mass is saved and there are equivalent quantities of iotas of every component on the two sides of the situation.

In the event that a synthetic condition isn't adjusted, it will disregard the law of protection of mass. It will suggest that, which is impossible, mass is either created or destroyed.

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Incomplete question , missing part is below :

In the Apollo lunar module, hydra zine gas, N₂H₄, reacts with dinitrogen tetroxide gas to produce gaseous nitrogen and water vapor. Identify the balance chemical equation for this reaction.

1) 2 N₂H₄ (g) + N₂0₄ (g)  à 6 N (g) + 4H₂0 (g)

2) N₂ H₄ (g) + N₂0₄ (g)   à 4 N (g) + 2 H₂0 (g)

3) N₂H₄(g) + N₂0₄ (g)     à  2 N₂ (g) + 2 H₂0 (g)

4) 2 N₂H₄(g) + N₂0₄ (g)   à 3 N₂(g) + 4 H₂O (g)

5) 2 N₂H₄(8) + N₂O₂ (g)   à N₂0₃  + 3 N₂(g) + 4H₂S g

A pitcher of orange juice flow smoothly when you transfer it to another container because of lower viscosity value and large proportion of water in it.

Viscosity is the resistance of a fluid to a change in shape or movement of portions as compared to one another. High viscous moves slowly as compared to less viscous.

So we can conclude that a pitcher of orange juice flow smoothly when you transfer it to another container due to lower viscosity.

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