A sample of gas has an initial volume of 4.3 L at a pressure of 759 mmHg .If the volume of the gas is increased to 9.0 L , what will the pressure be

The law that demonstrates this observation is the law of definite proportions.

Law of definite proportion states that a given chemical compound continually incorporates its element factors in constant ratio (with the aid of using mass) and does now no longer rely on its supply and technique of preparation. Law of Definite Proportions states that during a given kind of chemical substance, the factors are continually blended withinside the identical proportions with the aid of using mass. The Law of Definite Proportions applies while factors are reacted collectively to shape the identical product. Such as , a sample of an unknown substance contains 24. 0 grams of carbon and 2. 0 grams of hydrogen.

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Answer: This bond is created between the nitrogen (N) of one amino acid's amino group and the carbon (C) of another amino acid's carboxyl group.

The peptide bond, also known as the amide bond, joins two amino acids together. This bond is created by a condensation reaction that results in the removal of a molecule of water.

When two amino acids combine, a peptide bond is formed between the α-amino group of one amino acid and the α-carboxyl group of the other. Hence, this bond joins the α-carboxyl group of one amino acid to the α-amino group of another amino acid. To form a dipeptide, two amino acids are covalently bonded by a peptide bond.

This bond is created between the nitrogen (N) of one amino acid's amino group and the carbon (C) of another amino acid's carboxyl group. A carboxyl group is a functional group made up of a carbon atom, two oxygen atoms, and a hydrogen atom.

Amino acids have an amino group (NH2) and a carboxyl group (COOH) in their molecular structure. As a result, when two amino acids combine, one molecule of water is eliminated and a peptide bond is formed.

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Answer: The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces. The more particles that hit the walls, the higher the pressure. If a gas is heated up, its particles move around more quickly. They hit the walls of their container harder and more often. This increases the pressure. Sometimes the pressure gets so great that the container bursts.

Explanation:

Answer:

When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces. 

Explanation:

The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces. The more particles that hit the walls, the higher the pressure.

Answer:

3.91 on Acellus

Explanation:

1.88 g potassium would be have been used to produce 10.32 g K2S, meaning that 6.41 g S would be left over.

The chemical element with the atomic number 19 and the letter K is potassium. Potassium is a silvery-white metal that may be easily and gently sliced with a knife. Within seconds of exposure, potassium metal quickly combines with air oxygen to produce flaky, white potassium peroxide.

Potassium can be obtained as a dietary supplement and naturally in many foods. Its primary function in the body is to support the maintenance of regular fluid levels inside our cells. It's opposite, sodium, keeps fluid levels within cells normal. Additionally, potassium supports proper blood pressure and aids in the contraction of muscles.

2K + S → K₂S

two moles K react with one mol S

6.41 g S react with K to formed 10.32g of K₂S

stoichiometric ratio of K:S is 2.44

reaction conditions your supplied ratio of K:S is 1.28

Therefore, sulfur is in excess and potassium is the limiting reagent.

The reaction of 6.41 g S would produce 10.32g K2S

The reaction of  6.41 g S would produce  6.41 (10.32/78.2) = 6.47 g K2S

Thus, 1.88 g K would be have been used to produce 10.32   g K2S, meaning that 6.41 g S would be left over.

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The compound in which the octet is expanded to include 12 electrons is SF6 (sulphur hexafluoride). In SF6, the sulphur atom has six fluorine atoms surrounding it, and in order to bond with all six fluorine atoms, the sulphur atom must have an expanded octet, meaning it has 12 electrons in its outermost energy level.

The octet is expanded to include 12 electrons in compounds where the central atom can accommodate more than eight electrons. Such compounds typically involve elements from the 3rd period or below. A common example is sulfur hexafluoride (SF6), where sulfur has an expanded octet of 12 electrons.

The inorganic compound sulphur hexafluoride is a colourless, odourless, nonflammable, and nontoxic gas. With six fluorine atoms joined to a central sulphur atom, SF6 has an octahedral structure. As might be expected for a non-polar gas, SF6 dissolves poorly in water but readily in non-polar organic solvents. At sea level, it has a density of 6.12 g/L, which is significantly higher than the density of air (1.225 g/L). It is often carried as a compressed gas that has been liquefied.

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Explanation:

glucose -> carbon + water

iron + water + oxygen -> iron oxide

carbonic acid -> carbon dioxide + water

The procedure which is based on the half-life of a radioisotope is to date the determined age of fossils. Thus, the correct option for this question is D.

Radioisotopes may be defined as an unstable form of a chemical element that significantly liberates radiation as it breaks down and becomes more stable.

According to the context of this question, radioisotopes are unstable due to the presence of extra neutrons in their nuclei and emit various types of radiation.

Therefore, the procedure which is based on the half-life of a radioisotope is to date the determined age of fossils. Thus, the correct option for this question is D.

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The oxidation reduction reaction are given below.

Oxidation half reaction:

Zn° →Zn² + 2e-

Reduction half reaction:

2Mn^5 +4e^- → 2Mn^2+

Belo w are the oxidation and reduction reaction of the common alkaline batteries to produce electricity.

Oxidation half reaction:

Zn° →Zn² + 2e-

Reduction half reaction:

2Mn^5 +4e^- → 2Mn^2+

To balance the overall reaction, we need to multiply each half reaction by appropriate coefficients to ensure that the electrons cancel out.

Here is the balance overall reaction.
2Zn° + 2Mn^5 → 2Zn² + 2Mn²+

The balanced equation shows that in alkaline batteries, zinc metal is oxidized to form zinc ion, while manganese ions are reduced to manganese(II) ions. The oxidation reduction reaction    generate an electric current as a result of the flow of electrons.

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Answer:

3 sometimes 4

Explanation: there are usualy

3 layers of paint but sometime manufacterers add paint protection film to bring the total up to 4

All of the following are involved in eukaryotic transcription EXCEPT a rho factor. The correct answer is 2.

Eukaryotic transcription is the process by which genetic information in DNA is transcribed into RNA. This process is carried out by a large complex of proteins and enzymes, including general transcription factors, transcription activators, and a transcription initiation complex.

These proteins and enzymes work together to unwind the DNA double helix, recruit the RNA polymerase enzyme to the promoter region of the gene, and begin the process of synthesizing RNA. The rho factor is not typically involved in this process, as it is specific to prokaryotic cells and is involved in the termination of transcription.

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Answer:

Taxonomy

Explanation:

Taxonomy is the science of naming, describing and classifying organisms

When the enolate of acetone reacts with ethyl bromide through alkylation, the resulting product is ethyl isopropyl ketone. This product is formed through the substitution of the bromine atom in ethyl bromide.

with the enolate ion of acetone, leading to the incorporation of an ethyl group and an isopropyl group on the carbonyl carbon of acetone. The reaction is a type of nucleophilic substitution and occurs under basic conditions.

The reaction between the enolate of acetone and ethyl bromide involves nucleophilic substitution. The enolate ion, which is formed by deprotonating the α-carbon adjacent to the carbonyl group in acetone, acts as the nucleophile.

The ethyl bromide serves as the electrophile, as the carbon atom bonded to the bromine is partially positive due to the presence of the electronegative bromine atom.

The nucleophilic enolate attacks the electrophilic carbon of the ethyl bromide, leading to the substitution of the bromine atom. The resulting product is ethyl isopropyl ketone, where the ethyl group (-C₂H₅) and the isopropyl group (-C(CH₃)₃) are attached to the carbonyl carbon of acetone.

The presence of the alkyl groups alters the properties of the ketone, affecting its reactivity and potential applications.

Overall, the reaction between the enolate of acetone and ethyl bromide results in the formation of ethyl isopropyl ketone. This type of alkylation reaction is commonly employed in organic synthesis to introduce alkyl groups onto carbonyl compounds, providing a means to modify the properties and functionality of the resulting product.

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Answer:

Internal Cue

Explanation:

Answer:

an internal cue

Explanation:

just think

According to the balanced equation, the reaction of 13.46 g of MgBr2 with 6.9 g of KOH will produce 6.9 g of Mg(OH)2 and 13.46 g of KBr.

The number of moles of MgBr2 and KOH can be calculated using the molar mass of each compound. 13.46g MgBr2 has a molar mass of 184.11 g/mol, so the number of moles of MgBr2 is 0.073 moles. 6.9g KOH has a molar mass of 56.1 g/mol, so the number of moles of KOH is 0.123 moles.

A chemical reaction is a process that involves the rearrangement of atoms or molecules to form new substances. Chemical reactions involve breaking and forming chemical bonds, which leads to the formation of new substances. Chemical reactions typically involve the transfer of electrons between molecules, or the breaking and forming of chemical bonds between atoms. This process usually results in the formation of new substances, as well as the release of energy in the form of heat and light.

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Answer:

In solid state, melting point of Argon is -189 degrees Celcius.

The hydrocarbon can be cis or trans since it contains a double bond.

The term hydrocarbon has to do with is a compound that is made up of only hydrogen and carbon. The structure of the hydrocarbon often has a lot to do with its properties.

The question is incomplete as the hydrocarbon is not shown. However, the hydrocarbon can be cis or trans since it contains a double bond.

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Answer:

nbfuhbcuwcbevbeufvhev

Explanation:

jejfihfirhugv

Answer:

Hope this helps you

Answer:

90 mL

0.09 Liters

Explanation:

Givens

1 cc of solution = 1 mL

0.75 cc / min needed to go in intravenously.

2 hours needed.

? Liters

Solution

1 hour = 60 minutes

1 hours = 2 * 60 = 120 minutes

rate = 0.75 cc/minute

Liters = rate * time

Liters = 0.75 cc * 120 minutes

Liters = 90 cc

That's not the answer.

1 Liter has 1000 mL or ccs

x Liter has 90 mL          

Equation

1/x = 1000 / 90

Solution

Cross multiply

1000x = 90*1           Divide by 1000

x = 90/1000

x = 0.09 Liters.

The percent by mass : 6.3%

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

mass of potassium nitrate = 8.4 g⇒solute

mass of potassium nitrate + mass of water = 8.4 g + 125 g =133.4 g

Percent by mass of the solute :

\(\tt =\dfrac{mass~solute}{mass~solution}\times 100\%\\\\=\dfrac{8.4}{133.4}\times 100\%\\\\=6.3\%\)

Answer:

The answer is 3.87 J/g°C

Explanation:

Here is the equation we are going to use:

\(C=\frac{q}{mT}\)

C= specfic heat in J/g°C

q = heat in joules (J)

m = mass in grams (g)

T = change in temperature

Here is what is given:

q = 849 J

m = 95.4 g

T = 48.0 - 25.0 = 23°C

Find:

Specific heat capacity in J/g

The first thing we are going to do is plug everything into the equation:

\(C = \frac{849J}{(9.54g)(23degreesC)}\)

Then we are going to solve for C

\(C = \frac{849J}{219.42gC} = 3.87 J/gCelsius\)

Hope this helps!

Answer:

The answer is 3.87 J/gC

The term mole concept is used here to determine the theoretical yield of H₂. The theoretical yield of H₂ is 1.75 g and the moles of Fe is 10.8. The correct options are D and C.

One mole of a substance is defined as that amount of it which contains as many particles or entities as there are atoms in exactly 12 g of Carbon - 12. The equation used to calculate the number of moles is:

Number of moles (n) = Given mass / Molar mass

The theoretical yield of H₂ is:

1. 3.5 × 1/2 = 1.75 g

2. The moles of Fe needed to react with 8.1 mole of O₂ is:

8.1 × 4 / 3 = 10.8 mole

Thus the correct options are D and C.

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Answer:

Explanation: The pyramid model of four level in an organization is based on and is depends on the various levels of the hierarchy systems or management in the organization. These four level is of different types of the Information System in the organization.

Explanation:

Answer:

The conjugate acid is CH3COOH

Answer:

compound is CuO.

Explanation:

rxn:

CuO + 2HCl = CuCl2 (Blue green color) + H2O

Answer:

Your next meal, you, and your computer.

Answer:

your next meal, you and your computer.

When observing an organic compound's melting point with the Mel-Temp device, you should note the following temperature for your lab.

report: b. the temperature at which you see the final amount of solid turn into a liquid.

A substance's melting point is the temperature at which it transitions from a solid to a liquid condition. It's crucial to wait until the entire solid sample has melted when using the Mel-Temp equipment before taking the temperature. In contrast to a partially melted sample that can have a variable temperature due to residual heat, this assures that the temperature measured properly represents the substance's true melting point. The amount of solid that eventually turns into a liquid can be determined by watching it.

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Answer:

d. compounds and elements

Explanation:

a pure substance is when something is made up of one type of thing, whether it be elements, where they are made up of one type of atom or a compound, where its atoms are chemically bonded and cannot be broken down by physical means

False.

12 grams of carbon-12 constitutes 1 mole of carbon. 1 mole of any substance contains Avogadro number of particles.

A mole is a unit of measurement in chemistry.

one mole of something is equal to as many of that something as there are atoms in 12 grams of the isotope carbon-12.

Avogadro’s wide variety, the wide variety of gadgets in a single mole of any substance (described as its molecular weight in grams), is the same as 6.02214076 × 1023. The gadgets can be electrons, atoms, ions, or molecules, relying on the character of the substance and the individual of the reaction.

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Answer: False

Explanation: Did the exam