what happens to the rate of an e1 reaction when the volume of the solvent is decreased from 200 ml to 100 ml? hint: how is concentration affected by volume?

The enthalpy of reaction for the combustion of 1 mole of butane can be calculated using the balanced chemical equation for the reaction and the standard enthalpies of formation for each of the reactants and products.

The balanced chemical equation for the combustion of butane is:
C4H10 (g) + 6.5 O2 (g) → 4 CO2 (g) + 5 H2O (l)
The standard enthalpies of formation for each of the reactants and products are:
ΔHf° (C4H10) = -125.6 kJ/mol
ΔHf° (O2) = 0 kJ/mol
ΔHf° (CO2) = -393.5 kJ/mol
ΔHf° (H2O) = -285.8 kJ/mol
The enthalpy of reaction can be calculated using the following equation:
ΔHrxn = Σ ΔHf° (products) - Σ ΔHf° (reactants)
ΔHrxn = [(4)(-393.5) + (5)(-285.8)] - [(-125.6) + (6.5)(0)]
ΔHrxn = -2877.6 kJ/mol - (-125.6 kJ/mol)
ΔHrxn = -2752 kJ/mol

Therefore, the enthalpy of reaction for the combustion of 1 mole of butane is -2752 kJ/mol.

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The correct option from the given statements concerning mixtures is (d) more than one correct response.

The statement (a) "The composition of a homogeneous mixture cannot vary" is incorrect as the composition of a homogeneous mixture can vary. For example, a mixture of salt and water is homogeneous and its composition can vary depending on the amount of salt and water mixed in it.

The statement (b) "A homogeneous mixture can have components present in two physical states" is correct. Homogeneous mixtures are mixtures that are uniform throughout their composition, meaning that there is no visible difference between the components of the mixture. For example, a mixture of ethanol and water is homogeneous and its components are present in two physical states (liquid and liquid).

The statement (c) "A heterogeneous mixture containing only one phase is an impossibility" is incorrect. A heterogeneous mixture is a mixture where the components are not evenly distributed and the mixture has different visible regions or phases. However, it is possible for a heterogeneous mixture to contain only one phase. For example, a mixture of oil and water is heterogeneous but can have only one phase.

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Answer:

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we're finding the new pressure

\(P_2 = \frac{P_1V_1}{V_2} \\\)

We have

\(P_2 = \frac{105 \times 11.5}{65} = \frac{1207.5}{65} \\ = 18.5769\)

We have the final answer as

Hope this helps you

Answer:

it's broken down into  carbon dioxide and water

Explanation:

The answer is A. It gets broken down.

Answer: 373 mL

Explanation:

Since there is no change in pressure, the formula: V / T = V / T can be used.

However, you must first convert the temperatures to Kelvin by adding 273 to them:

(19 + 273) = 292K and (90 + 273) = 363K.

Now, plug in: V / 292 = 464 / 363 → V = 373 mL :)

The solid that has the lowest solubility at 10°C is substance D

A solubility curve is a graphic representation of a solute's solubility in a particular solvent at different pressures and temperatures. A material's solubility, which is often expressed in grams per 100 milliliters (g/100 mL) of solvent, is the maximum quantity of the substance that can dissolve in a given amount of solvent at a particular temperature and pressure.

This is because, the solubility of the substance D as we can see from the curve is closest to zero around 10°C .

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Answer:

Substance D

Explanation:

its right on acellus

The statement provided in the question regarding Oxidative phosphorylation is True.

Oxidative phosphorylation is a process that involves the flow of electrons through the electron transport chain, a series of proteins and electron carriers within the mitochondrial membrane. The flow of electrons allows the electron transport chain to pump protons to one side of the mitochondrial membrane, creating a proton-motive force, a type of electrochemical pressure. This pressure is then relieved through specialized protein complexes, which capture the energy of the protons as they flow back to the other side of the membrane. This energy is used to produce ATP, the primary energy currency of cells. The process of oxidative phosphorylation is an essential step in cellular respiration, and it occurs in the mitochondria of eukaryotic cells and the plasma membrane of prokaryotic cells.

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The alanine molecule has a net negative charge at pH 11, where the amine exists as a neutral base and the carboxyl serves as its conjugate base.

The amino acid alanine is necessary for the synthesis of proteins. Vitamin B-6 and tryptophan are broken down using it. It provides the central nervous system and muscles with energy. It helps the body use glucose and boosts the immune system.

The alanine chemical structure reveals that the backbone is made up of two functional groups: the carboxyl group (COOH C O O H) and the amino group (NH2 N H 2), as well as a carbon atom attached to the side chain, CH3 C H 3.

The majority of proteins contain a large amount of the glycogenic amino acid alanine. Alanine can also be produced from other amino acids, particularly branched chain amino acids (BCAA) like valine, leucine, and isoleucine.

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Pattern: Volcanoes and earthquake zones are often found in close proximity to each other, with earthquake zones appearing as long lines on the globe.

The pattern can be attributed to the tectonic plate boundaries. Volcanoes are typically located along plate boundaries where there is subduction or collision of tectonic plates. These areas experience intense geological activity, leading to volcanic eruptions. Earthquake zones, represented by long lines on the globe, coincide with plate boundaries as well. The lines correspond to the locations where plates interact, resulting in significant stress and release of energy, leading to seismic activity. The long lines represent the interconnectedness of multiple earthquake-prone areas along the plate boundaries, forming seismic belts or zones. Therefore, the close proximity of volcanoes and earthquake zones can be explained by their shared association with tectonic plate boundaries and the geologically active regions that result from plate interactions.

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Answer:

magnesium iodide MgI2

Explanation:

The wooden tool is approximately 17,161 years old. This is calculated based on the fact that carbon-14 (C-14) has a half-life of 5730 years and the wooden tool contains 12.5% of the original C-14 content.

Carbon-14 (C-14) is a radioactive isotope of carbon that is present in the Earth's atmosphere. When living organisms, such as trees, take in carbon dioxide from the atmosphere, they incorporate a certain amount of C-14 into their tissues.

After the organism dies, the C-14 starts to decay, and its concentration decreases over time.

The half-life of C-14 is 5730 years, which means that after 5730 years, half of the initial C-14 content will have decayed.

Using this information, we can calculate the age of the wooden tool.

Since the wooden tool has 12.5% of the original C-14 present, it means that it has gone through approximately three half-lives (50% -> 25% -> 12.5%).

To find the number of years, we multiply the half-life by the number of half-lives:

5730 years/half-life × 3 half-lives = 17,190 years

Therefore, the wooden tool is approximately 17,161 years old, assuming a constant decay rate of C-14 and that the initial C-14 concentration was at the same level as in the atmosphere.

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Answer:

Ammonia

Explanation:

I believe that ammonia is the correct answer to this question.

Answer:

The proportion of carbon and oxygen is different in different samples of the gas.

Answer: A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. And a heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture.

3 similarities between homogeneous and heterogeneous mixture areas:-

i. They both are mixtures.

ii. They both contain multiple components.

iii. ( I only know 2 )

Answer:

Although the terms mass percent and percent composition are used interchangeably, they are different terms. The mass percent refers to the percentage of a component in a mixture, while the percent composition refers to the percentage of a particular chemical element in a mixture.

Explanation:

Hope this helps...

Explanation:

By rubbing the balloon on a sweater, you can transfer negative charges onto the surface of the balloon

Answer:

Convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number. This is the mole ratio of the elements and is represented by subscripts in the empirical formula.

Explanation:

The result is the molecular formula

Answer:

Sry man wish I knew trust me tho you should go over it with your parents just let them know that your struggling and maybe they will go over it and help you get a better understanding of it also try asking an older sibling but yeah good luck with that have a good night!

Explanation:

The molarity of the H₂SO₄ solution is 0.101 M. The enthalpy of formation of SO₃(g) is 396 kJ/mol.

To determine the molarity of the H₂SO₄ solution, we can use the concept of stoichiometry and the volume and concentration of the NaOH solution used in the titration.

Given:

Volume of H₂SO₄ solution = 22.5 mL

Volume of NaOH solution used = 43.2 mL

Concentration of NaOH solution = 0.105 M

First, we need to determine the moles of NaOH used in the titration. We can do this by multiplying the volume of NaOH solution used by its concentration:

Moles of NaOH = (43.2 mL) x (0.105 mol/L) = 4.536 mol

According to the balanced equation for the reaction between H₂SO₄ and NaOH, the stoichiometric ratio is 1:2. This means that 1 mole of H₂SO₄ reacts with 2 moles of NaOH.

Therefore, the moles of H₂SO₄ in the solution would be half of the moles of NaOH used:

Moles of H₂SO₄ = (1/2) x (4.536 mol) = 2.268 mol

Now, we can calculate the molarity of the H₂SO₄ solution by dividing the moles of H₂SO₄ by the volume of the solution in liters:

Molarity of H₂SO₄ = (2.268 mol) / (22.5 mL / 1000 mL/L) = 0.101 M

Therefore, the molarity of the H₂SO₄ solution is 0.101 M.

Regarding the enthalpy of formation of SO₃(g), the given enthalpy of reaction (ΔH°rxn) for the reaction 2 SO₂(g) + O₂(g) → 2 SO₃(g) is -198 kJ.

The enthalpy of formation (ΔH°f) of a compound is the enthalpy change when one mole of the compound is formed from its constituent elements in their standard states.

Given:

ΔH°f, kJ/mol SO₂(g) = -297 kJ/mol

To determine the enthalpy of formation of SO₃(g), we can use the following equation:

ΔH°rxn = ΣΔH°f (products) - ΣΔH°f (reactants)

Since we have the ΔH°rxn and the enthalpy of formation of SO₂(g), we can rearrange the equation and solve for ΔH°f of SO₃(g):

ΔH°f (SO₃) = ΣΔH°f (products) - ΣΔH°f (reactants) + ΔH°rxn

ΔH°f (SO₃) = 0 kJ/mol (since it is a product) - 2 x (-297 kJ/mol) + (-198 kJ/mol)

ΔH°f (SO₃) = 594 kJ/mol + (-198 kJ/mol) = 396 kJ/mol

Therefore, the enthalpy of formation is 396 kJ/mol.

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Specialized periodicals in which scientists publish the results of their works are called scientific journals.

In educational publishing, a scientific journal is a periodical book intended to similarly the progress of technology, typically by way of reporting new studies.

Journal articles may include original research, re-analyses of studies, opinions of literature in a selected place, proposals of new but untested theories, or opinion pieces.

These scientific journals include the following.

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Answer:

If 700 g of water at 90 °C loses 27 kJ of heat, its final temperature is 106.125 °C

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

In this way, between heat and temperature there is a direct proportional relationship (Two magnitudes are directly proportional when there is a constant so that when one of the magnitudes increases, the other also increases; and the same happens when either of the two decreases .). The constant of proportionality depends on the substance that constitutes the body and its mass, and is the product of the specific heat and the mass of the body. So, the equation that allows to calculate heat exchanges is:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature, ΔT= Tfinal - Tinitial

In this case:

Replacing:

\(27,000 J=4.186 \frac{J}{g* C}*400 g* (Tfinal - 90C)\\\)

Solving:

\(27,000 J=1,674.4 \frac{J}{C}* (Tfinal - 90C)\)

\(\frac{27,000 J}{1,674.4 \frac{J}{C}} =(Tfinal - 90C)\)

16.125 °C= Tfinal - 90 °C

Tfinal= 16.125 °C + 90 °C

Tfinal= 106.125 °C

If 700 g of water at 90 °C loses 27 kJ of heat, its final temperature is 106.125 °C

The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.

The electrochemical cell is the cell that is capable of generating the electrical energy from the chemical reactions or by the use of the electrical energy to cause the chemical reaction. The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.  

There are the two types of the electrochemical cells is as follows : the galvanic called the electrolytic cells. the galvanic cell is also called as the voltaic cell.

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2.1 moles of \(H_2O\) will have a mass of 37.8 grams.

The number of moles a substance contains and the mass of the substance are related by the following equation:

Mole = mass/molar mass

In other words, the mole of a substance is the ratio of the mass of the substance and its molar mass.

Rearranging the equation:

Mass = mole x molar mass.

In this case, we want to find the mass of 2.1 moles of water. The molar mass of water can be calculated as follows:

\(H_2O\) = (1 x 2) + 16

       = 18 g/mol

Mass of 2.1 moles of water = 2.1 x 18

                                            = 37.8 grams

In other words, 2.1 moles of water will have a mass of 37.8 grams.

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i’m pretty sure it all of them!

ALL options above described can impact the wind patterns.

In conclusion, ALL options above described can impact the wind patterns.

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Explanation:

Mass=176g

Volume of cube= length ^3

=4 x 4 x 4

=64cm^3

Density = mass/volume

=176/64

=2.75g/cm^3

When a gas is collected over water, the gas is not pure because it is mixed with vapor from the evaporation process of the water.

Partial pressure is the pressure that a gas would have if it took up the entire volume that the mixture of gases currently occupies.

Gas is not pure when it is collected over water because it contains water molecules. Dalton's Law of Partial Pressures can be used to calculate the partial pressure of the collected gas.

Following the determination of the total pressure, the pressure of the water vapor is calculated by consulting a reference table for that particular temperature. By deducting the pressure of the water vapor from the total pressure, one can calculate the partial pressure of the collected gas.

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