what volume of oxygen is produced at stp when 6.58 x 1024 molecules of water is decomposed according to the following reaction?

Answer:

1.BaCO3 2.MgBr2 3.aluminum and oxygen 4.Potassium chloride

Explanation:

Answer:

Ionosphere.

Explanation:

The atmospheric layer that is represented by F is known as IONOSPHERE.

The characteristics of Ionosphere

1. It is considered to be located in the upper layer of the earth's atmosphere due to the location of region F.

2. It is ionized by solar radiation that contains an electrical charge.

3. It functions as a reflector. This can be observed in radio waves broadcasting.

Answer:

the correct answer is B. far left

Explanation:

i just got it right on edge 2020 :p

Answer:

I ........believe it's true

Answer:false

Explanation: no idea

From what we know, we can confirm that the variations in colors are a mechanism intended to protect the plants from predators.

This can be observed throughout nature. Many poisonous organisms have evolved bright colors intended to be noticed. Over time, this has resulted in many predators avoiding prey with bright colors, in order to avoid the possibility of being poisoned.

Therefore, we can confirm that the variations in colors are likely a mechanism intended to protect the plants from predators.

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for some reason it won't let me type the answer, it's the first option

Answer:

2

Explanation:

Given compound:

2MnO₄

This means that the compound contains:

\(\rule[225]{225}{2}\)

Hope this helped!

Answer:

Explanation:

Aliphatic compounds are those hydrocarbons that are the open chain compounds and also closed chains. Aromatic compounds are those who have only a closed chain structure. They can be saturated as well as unsaturated where the system can be open as well as closed chain.

The correct options are:1.

Conditional probability that the selected compound actually has an impurity is 0.74.2.

Conditional probability that the selected compound is actually free of an impurity is 0.0185.3.

Conditional probability that the selected roll is from Process I given that it is defective is 0.64.

Here, we need to find out the probability that a selected compound has an impurity given that the test indicates an impurity is present.

P(A) = probability that a compound has impurity = 0.15

P(B) = probability that the test indicates an impurity is present

= 0.15 x 0.9 + 0.85 x 0.05

= 0.14 + 0.0425

= 0.1825P

(B|A) = probability that the test indicates an impurity is present given that the compound has impurity = 0.9

Therefore, by Bayes' Theorem,

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

         = 0.9 * 0.15 / 0.1825

         = 0.7370

         ≈ 0.74

Conditional probability that the selected compound actually has an impurity is 0.74.10.

Here, we need to find out the probability that a selected compound is actually free of an impurity given that the test indicates an impurity is not present.

P(A) = probability that a compound has impurity = 0.15

P(B) = probability that the test indicates an impurity is not present = 0.85 x 0.95 + 0.15 x 0.1 = 0.8075

P(B|A) = probability that the test indicates an impurity is not present given that the compound has impurity

          = 0.1

Therefore, by Bayes' Theorem,

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

          = 0.1 * 0.15 / 0.8075

          = 0.0185

Conditional probability that the selected compound is actually free of an impurity is 0.0185.11.

Here, we need to find out the probability that the selected roll is from Process I given that it is defective.

Let A denote the event that a roll is from Process I and B denote the event that a roll is defective.

Then, we need to find out P(A|B).

P(A) = probability that a roll is from Process I = 0.6

P(B|A) = probability that a roll is defective given that it is from Process I = 0.03

P(B|A') = probability that a roll is defective given that it is from Process II = 0.01

P(A'|B) = probability that a roll is from Process II given that it is defective

Therefore, by Bayes' Theorem,

P(A|B) = P(B|A) * P(A) / [P(B|A) * P(A) + P(B|A') * P(A')]

= 0.03 * 0.6 / (0.03 * 0.6 + 0.01 * 0.4)

= 0.6429

≈ 0.64

Conditional probability that the selected roll is from Process I given that it is defective is 0.64.

Hence, the correct options are:1.

Conditional probability that the selected compound actually has an impurity is 0.74.2.

Conditional probability that the selected compound is actually free of an impurity is 0.0185.3.

Conditional probability that the selected roll is from Process I given that it is defective is 0.64.

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The correct response is B, as blood spatter can be utilized to determine blood type. Everything but option B is implied by Locard's exchange principle. Blood contains of glucose

Blood is a bodily fluid found in humans and other vertebrates with circulatory systems that carries metabolic waste products away from cells while also delivering essential elements like nutrition and oxygen to the cells. Peripheral blood is another name for blood in the circulatory system. An essential component of forensic science research is Locard's exchange principle. It claims that when committing a violent crime, every criminal leaves a trail. It is the responsibility of the investigator to track down this trace evidence and reenact the crime.

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The concentration of the NaOH solution is 10.00 g/dm³.

To calculate the concentration in g/dm³ of a solution of NaOH containing 0.25 moles in 1 dm³, we need to know the molar mass of NaOH.

The molar mass of NaOH is calculated as follows:

Na (Sodium) = 22.99 g/mol

O (Oxygen) = 16.00 g/mol

H (Hydrogen) = 1.01 g/mol

Molar mass of NaOH = 22.99 g/mol + 16.00 g/mol + 1.01 g/mol = 40.00 g/mol

Now, we can calculate the concentration (C) using the formula:

C = (moles of solute) / (volume of solution in dm³)

C = 0.25 moles / 1 dm³

C = 0.25 mol/dm³

To convert moles to grams, we can multiply the molar mass by the number of moles:

Concentration in g/dm³ = (0.25 mol/dm³) * (40.00 g/mol)

Concentration in g/dm³ = 10.00 g/dm³

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An element can have multiple isotopes. Isotopes correspond to variations of the same element with respect to the number of neutrons in its nucleus. the number they give us, 35 and 37 correspond to the mass number of chlorine. The percentage will be how abundant the element is.

To find the average atomic mass we must multiply the mass of the isotope by its respective percentage of abundance and add these two results.

So, the average atomic mass of Cl will be:

Answer: the average atomic mass of chlorine is 35.454 amu

Approximately 105.02 grams of Rbl would be produced from 1.23 moles of Rb, so the correct answer is 131 grams Rbl which is the last option as to determine the grams of Rbl (rubidium) produced from 1.23 moles of Rb (rubidium), one need to use the stoichiometry of the balanced equation and the molar mass of Rbl.

From the balanced equation:

2 Rb+1 + Znl₂ → Zn + 2 Rbl

one can see that the stoichiometric ratio between Rb and Rbl is 2:2, or simply 1:1. This means that for every 2 moles of Rb, we produce 2 moles of Rbl.

one can have 1.23 moles of Rb. Since the stoichiometry is 1:1, this means that one will also produce 1.23 moles of Rbl.

To calculate the mass calculation of Rbl produced, one need to know the molar mass of Rbl. The molar mass of rubidium (Rb) is approximately 85.47 g/mol.

Using the molar mass of Rbl, the mass of Rbl produced:

Mass of Rbl = moles of Rbl x molar mass of Rbl

Mass of Rbl = 1.23 moles x 85.47 g/mol

Mass of Rbl ≈ 105.02 grams

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At constant temperature, the behavior of a sample of a real gas more closely approximates that of an ideal gas as its volume is increased because the (D) Average distance between molecules becomes greater.

An ideal gas is:

1) made up of molecules which are in constant random motion in straight lines.

2) all collisions are perfectly elastic, there is no loss of kinetic energy during the collision.

3) follows ideal gas law: p·V = n·R·T.

4) the gas particles have negligible volume.

At low temperatures, volume of the gas is not negligible.

Real gases may be expected to deviate from Charles's law at high pressures.

Real gases may be expected to deviate from Charles's law near the liquefaction temperature.

Missing options:

(A) Collisions with the walls of the container become less frequent

(B) Average molecular speed decreases

(C) Molecules have expanded

(D) Average distance between molecules becomes greater

(E) Average molecular kinetic energy decreases

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Answer:

na + B2 = t

Explanation:

Answer:

2NaN3→ 2Na + 3N2 is the balanced equation

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The correct answer is "the same; swap" as a 1,2 alkyl shift involves the movement of an alkyl group from one carbon to an adjacent carbon, resulting in the formation of a new carbocation intermediate.

In this process, the carbon skeleton remains the same, but the position of the alkyl group changes. This type of rearrangement is often observed in reactions involving tertiary carbocations, where the resulting product is usually more stable than the starting material.
                                    A carbocation rearrangement may result in a reaction product whose carbon skeleton is different from that of the starting material. One type of carbocation rearrangement is a 1,2-alkyl shift. This shift occurs when a more stable carbocation can be formed by moving an alkyl group from one carbon to an adjacent carbon, leading to a more stable product. In summary, the correct answer among the multiple-choice options is "different; shift."

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The four main ways that enzymes can bind to and catalyze a reaction: Lock and Key Model, Induced Fit Model, Multi-Substrate Model, Cofactor Model.

Lock and Key Model: In this model, the enzyme has a specific active site that fits the shape of the substrate like a lock fits a key. The substrate fits into the active site, and the enzyme catalyzes the reaction.

Induced Fit Model: In this model, the enzyme's active site is flexible and changes shape slightly to fit the substrate. The substrate and enzyme still fit together specifically, but the active site changes shape slightly to better accommodate the substrate.

Multi-Substrate Model: In this model, the enzyme has multiple active sites and can bind to and catalyze the reaction of multiple substrates simultaneously.

Cofactor Model: In this model, the enzyme requires an additional molecule, called a cofactor, to catalyze the reaction. The cofactor may be a metal ion or a small organic molecule, and it binds to the enzyme to increase its activity.

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The maximum volume of chlorine gas at RTP that can be obtained from 23.4 tonnes of molten sodium chloride is 4.82 x 10^7 dm3.

To calculate the maximum volume of chlorine gas produced from 23.4 tonnes of molten sodium chloride, first, we need to determine the number of moles of sodium chloride (NaCl). Given that 1 tonne of NaCl is equal to 10^6 Mr and the molar mass (Mr) of NaCl is 58.5, we can find the moles of NaCl as follows:

Moles of NaCl = (23.4 tonnes) x (10^6 Mr / 58.5)
Moles of NaCl = 4 x 10^8

The balanced chemical equation for the production of chlorine gas from sodium chloride is:

2 NaCl -> 2 Na + Cl2

From the equation, we can see that 2 moles of NaCl produce 1 mole of Cl2. Therefore, we can find the moles of Cl2 produced:

Moles of Cl2 = (4 x 10^8 moles NaCl) / 2
Moles of Cl2 = 2 x 10^8

Now, we can calculate the volume of chlorine gas produced at RTP, given that the molar volume of chlorine at RTP is 24 dm3:

Volume of Cl2 = (2 x 10^8 moles Cl2) x 24 dm3
Volume of Cl2 = 4.82 x 10^7 dm3

Therefore, the maximum volume of chlorine gas at RTP that can be obtained from 23.4 tonnes of molten sodium chloride is 4.82 x 10^7 dm3

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Answer:

Pollution comes from factories, careless humans, chemicals, non-biodegradable trash.

Explanation:

Ionic bonds are a type of bond formed with the attraction between oppositely charged ions to form a chemical compound, this type of bond will have a transfer of electrons, from the positively charged ion (cation) to the negatively charged ion (anion). Since this type of bonding heavily depend on the electronegativity of the elements, we will have compounds formed with metals, located more to the left in the periodic table, mostly group 1 and 2, and with nonmetals, more to the right in the periodic table, one example of this type of bond is Chlorine (nonmetal anion) and Lithium (metal cation).

Covalent bonds are a type of bond formed with the sharing of electrons between two elements with no big difference in their electronegativity, usually, we will see nonmetals in this type of bond, since their difference in electronegativity is not as relevant as the difference between metals and nonmetals, one example of this type of chemical bond is Nitrogen and Oxygen, 2 nonmetals that can bond together.

Metallic bond, as the name suggest, is a type of bond that will strictly involve metals and not nonmetals, this type of bond has many properties but the low electronegativity in general is one of these properties, one example for this bond is Gold and Gold

Therefore the answers are:

Gold and Gold = metallic

Nitrogen and Oxygen = covalent

Chlorine and Lithium = ionic

Answer:

I think it

C

because you cant view them with a naked eye

Answer: diamond

Explanation:

Diamond is a giant covalent molecule, containing millions of carbon atoms. Because of this, diamond is classified as a macromolecule.

In order to calculate the pH of a salt solution generated from a weak acid and a weak base using a single ice chart, a few things must be true.

Firstly, the weak acid and weak base must react to form a salt and water. This is important because the salt will affect the pH of the solution. Secondly, the acid and base must be of equal strength.

If one is stronger than the other, the resulting solution will either be acidic or basic, depending on which is stronger. Finally, the initial concentrations of the acid and base must be known,

as well as the equilibrium constant of the acid-base reaction. With this information, the single ice chart can be used to determine the concentrations of all species in the solution at equilibrium, which can then be used to calculate the pH of the solution.

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The right answer is (C). Ionic compounds are brittle because the layers are held in place by strong attraction forces.

Ionic bonding would typically be found in compounds where a metals is bound to a non-metal or even a semi-metal. Molecules are those contain just non-metals or semi-metals combined with non-metals and display covalent bonding.

The bond between the two hydrogen atoms in a water molecule, which is ionic in nature but has a covalent bond instead, is formed when they place their positive charges on opposite sides of a oxygen atom, that has a negatively charged.

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Answer

moles = 5.81 mol

Explanation

Given:

Volume = 144 L

AT SATP

1 mole = 24.4651 L

Solution:

1 mole = 24.4651 L

x mole = 144 L

x = 144/24.4651

x = 5.8 mol

Answer

crush the cubes of broth, add warm water and stir the container.

Explanation

The FASTEST way to make the chicken broth with the cubes you have will be to increase the surface area of the cubes broth by crushing and raise the temperature of the cubes broth by adding warm water and by stirring the container.

Hence, the correct answer to your question is:

crush the cubes of broth, add warm water and stir the container.

The best solvent for CH3OH (methanol) would be water (H2O) since methanol is highly soluble in water due to its similar polarity.

Methanol (CH3OH) is a polar molecule with a hydroxyl group (-OH) that can participate in hydrogen bonding. When choosing a solvent for CH3OH, the best option would be a polar solvent that can interact with the hydroxyl group and facilitate solubility. Among the given options, water (H2O) is the most suitable solvent for methanol. Water is a highly polar solvent with a strong ability to form hydrogen bonds, making it an excellent choice for dissolving polar substances like methanol. The other solvents listed, such as carbon tetrachloride (CCl4), hexane (C6H14), and benzene (C6H6), are nonpolar solvents and would not provide the necessary interactions to dissolve methanol effectively. Therefore, the best solvent for CH3OH is water (H2O).

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Following represents the number of Molecules of the type indicated is present as a reactant or product of the chemical reaction shown is the coefficient of the species

The number of atoms, molecules, or formula units of a reactant or product in a balanced chemical equation is the coefficient of that species then the mole ratio of two substances in a chemical reaction is the ratio of their coefficients in the balanced chemical equation and the this numbers are called as coefficient and they tell how many of each molecule are participate in the reaction

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