Find ΔS°rxn for the combustion of ethane (C₂H₆) to carbon dioxide and gaseous water. Is the sign of ΔS°rxn as expected?

Bycatch can negatively affect species consisting of seafood dolphins, sea turtles, protected fish, and whales by way of harming animals, contributing to population declines, and impeding populace recuperation.

Bycatch occurs because modern fishing is very efficient, often covers an extensive area, and can be highly unselective different influences of fisheries on marine mammals may additionally encompass elimination of their favored prey and once in a while habitat harm.

Bycatch is part of most business fishing operations. it's miles created whilst marine life is by chance stuck with the aid of fishing vessels. Fish and other undesirable aquatic animals are then tossed and returned to the ocean. Many are both lifeless or lose of life when they're thrown lower back.

Despite new technologies and the enterprise's reputation the difficulty, of bycatch continues to be a first-rate problem. now not handiest does it cause avoidable deaths and injuries, but the fishing strategies can be dangerous to the marine environments wherein they're employed.

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Answer:

1. Homogenous 2. Heterogenous 3. Element

Explanation:

A mixture that has clearly distinguishable components or stages is said to be heterogeneous.  Homogeneous composition has a consistent appearance and content across its mass.

A mixture is said to be homogeneous if its composition is constant throughout.

Because the dissolved salt is evenly distributed throughout the whole salt water sample, the salt water described above is homogeneous.

A mixture of two or more chemicals is referred to as a heterogeneous mixture. Examples include conglomerate rocks, water and oil, salads, trail mix, and mixes of sand and water or sand with iron filings (not cement).

Any substance that cannot undergo any non-nuclear chemical reaction can be considered an element. The number of protons in an element's atomic nuclei gives it a distinctive identity.

Therefore, A represent homogeneous, B represent heterogeneous and C represent element.

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A 0.260 g sample of NaOH (s) is added to enough water to make 250.0 ml of solution, the pH of this solution will be 12.4.

Mass of NaOH = 0.260 g

Volume of solution = 250.0 ml

Molar mass of NaOH = 40 g/mol

Calculate the molarity of NaOH

Molarity of NaOH = (0.260 g / 40 g/mol) × (1000 / 250)

Molarity of NaOH = 0.026 M

Now calculate the pOH

pOH of solution = -log [OH⁻]

pOH of solution = -log 0.026

pOH of solution = 1.585

Calculate the pH

pH of solution = 14.00 - pOH

pH of solution = 14.00 - 1.585

pH of solution = 12.4

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Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.

Answer:

V2O5 is the empirical formula of vanadium oxide

Explanation:

The molecular mass of Vanadium is  50.949 g/mol

Number of moles of vanadium = 0.3456 g/50.949 g/mol = 0.00696 moles

The molecular mass of Oxygen is 16.0 g/mol

Number of moles of Oxygen = (0.6330 – 0.354) g/16 g/mol = 0.0174 moles

Emperical formula  

V (0.00696 moles/0.00696 moles) O (0.0174 moles /0.00696 moles)

V 1 O2.5

Multiply by two get a whole number  

V2 O5

The result when two substances are mixed together depends on a variety of factors including the chemical properties of the substances involved, the proportions in which they are mixed, and the conditions under which the mixing occurs.

In general, the outcome of mixing two substances can vary widely and may include chemical reactions, physical changes, or a combination of both. The long answer to this question would require a more detailed analysis of the specific substances being mixed and the conditions of their interaction.

When two substances are mixed together, the result can vary depending on the specific substances involved. Generally, they can form a homogeneous mixture, such as when salt is dissolved in water, or a heterogeneous mixture, such as when sand is mixed with water. The properties of the final mixture may differ from the original substances, but the components in the mixture can typically be separated through physical processes.

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Based on LeChatelier's principle, (option a) Release of CO₂ and (option c) Conversion of NADH to NAD+  are favorable reactions in the context described.

According to LeChatelier's principle, a reaction is favorable when it is driven in the direction that helps to counteract an imposed change. Among the given options:

a. Release of CO₂: LeChatelier's principle would favor this reaction if the system is subjected to an increase in pressure, as the equilibrium would shift towards the side with fewer gas molecules to reduce the pressure.

b. Enol to Keto tautomerization: LeChatelier's principle is not directly applicable to this reaction, as it involves a tautomeric shift between different forms of the same molecule rather than a change in equilibrium.

c. Conversion of NADH to NAD+ : LeChatelier's principle would favor this reaction if the system is subjected to an increase in NADH concentration, as the equilibrium would shift towards the conversion of NADH to NAD+ to counteract the increase.

d. Diffusion of protons down the gradient: LeChatelier's principle is not directly applicable to this process, as it involves the movement of particles along a concentration gradient rather than a change in equilibrium.

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Answer:

Yes

Explanation:

Abstract. The negative ion of hydrogen continues to be important in atomic physics and astrophysics. Correlations between the two electrons are strong alieady in the ground state, the only bound state in this three-body system.

Answer:

The liquefaction of air is used to obtain nitrogen, oxygen, and argon and other atmospheric noble gases by separating the air components by fractional distillation in a cryogenic air separation unit.

Explanation:

The direct function of the energy released from the nuclear chain reaction in a nuclear power plant is for heating water to produce steam.

A chain reaction is type of reaction in which neutrons released in fission produce an additional fission in at least one further nucleus.

This type of reaction involves the release of energy. This energy or heat is used to make steam that spins a turbine to create electricity.

Thus, we can conclude that, the direct function of the energy released from the nuclear chain reaction in a nuclear power plant is for heating water to produce steam.

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Explanation:

We can tell if a chemical reaction has taken place when one or more of the following things happen:

1.There has been a colour change inside the reaction flask.

2. A gas has formed. Usually we know a gas has formed when we can see bubbles.

3.A solid has formed.

hope this answer helps!!!

Explanation:

A Chemical Reaction Is Usally Accompaneid by easly observed physical effects such as the emissions of heat and light the information of a precipitate the evaluation of gas,or a color change

A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left. ... A group is a vertical column of the periodic table, based on the organization of the outer shell electrons. There are a total of 18 groups.

Answer:

5.95g

Explanation:

1 \(dm^{3}\) = 1000 mL

∴ 100 mL = 100 ÷ 1000 = 0.1 \(dm^{3}\)

Volume = 0.1 \(dm^{3}\)

Concentration = 0.5 M

Concentration = \(\frac{No. of moles}{volume}\)

0.5 = \(\frac{x}{0.1}\)

No. of moles = 0.5 x 0.1 = 0.05 moles

No. of moles = \(\frac{mass}{mass. in. 1. mole}\)

Mass in 1 mole of KBr = 39 + 80 = 119g (39 is the mass of potassium and 80 is the mass of bromine)

0.05 = \(\frac{x}{119}\)

x = 119 × 0.05 = 5.95g

Reaction stoichiometry is based on chemical equations and law of conservation of mass.

The area of chemistry known as stoichiometry is focused on how much of each reactant and product there is in a given reaction. Whole numbers (coefficients) are used to represent the quantities of the reactants and products (often expressed in moles) for any balanced chemical reaction. When oxygen and hydrogen combine to form water, for instance, one mole of oxygen combines with two moles of hydrogen to create two moles of water.

Stoichiometry can also be used to calculate yield percentages and other quantities like the number of products that can be made from a given amount of reactants. The quantity of goods that can be created given specific information will be calculated in the concepts that follow.

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The given statement " the floor value of a convertible bond is its conversion value " is False.

The floor value of a convertible bond is not necessarily its conversion value. The floor value refers to the minimum value that a convertible bond should have, regardless of the underlying stock's performance. It is typically determined by factors such as the bond's coupon rate, time to maturity, and prevailing interest rates.

The conversion value, on the other hand, is the value that a convertible bond would have if it were immediately converted into shares of the underlying stock. It is calculated by multiplying the conversion ratio (the number of shares received upon conversion) by the market price of the underlying stock.

While the conversion value can serve as a lower bound for the value of a convertible bond, the floor value takes into account additional factors and is not solely based on the conversion value.

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Answer:

b

Explanation:

The given statement “Shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting” is true because shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting. It is becoming more difficult to predict demand, and there is a higher probability of product failure than there was in the past.

There are several factors responsible for this increased demand uncertainty and difficulty in forecasting. One of the most significant factors is the decrease in product life cycle length. Shorter product life cycles imply that new items and designs are being introduced on a more frequent basis.Product life cycles are the stages that a product passes through from conception to eventual obsolescence. It starts with the development of the product and continues until the product is no longer in use. It includes the introduction stage, growth stage, maturity stage, and decline stage.A product's life cycle has an impact on supply chain management since it has a significant impact on demand forecasting. As a result, any adjustments in demand forecasts must be accompanied by adjustments in supply chains. In a nutshell, shorter product life cycles have resulted in increased demand uncertainty and difficulty in forecasting, making it more challenging to manage supply chains effectively.

So, shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting is true.

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To answer this question, we have to divide the amount of heat released by the change in temperature:

It means that the correct answer is the last choice 5.652kJ/°C.

The one statements that describes any acidic aqueous solution at the 40 degrees Celsius is  pH < pOH. The correct option is a.

The pOH scale is same as to the pH scale in that the pOH of 7 is indicate that it is a neutral solution. The basic solution has the pOH less than the 7, and an acidic solution has the pOH that is greater than 7.

The pH scale is ranges from the 0 to 7. The pH less than 7 is for the acidic solution. The pH is greater than the 7 is for the basic solution. Therefore, the option a is correct.

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Answer:

Empirical formula: CH₂

Explanation:

We need to find the empirical formula of a compound that has carbon and hydrogen.

To find the empirical formula of any compound, if we have the mass or mass percent, we should follow 3 steps:

1. Calculate the moles, dividing by the atomic weight.

The atomic weight for carbon and hydrogen are 12 g/mol and 1 g/mol, so, doing the division we have:

C = 85.5 / 12 = 7.125

H = 14.3 / 1 = 14.3

2. Determine the number of atoms of each element in the formula

To do this, we just divide the previous moles by the lowest quantity we obtain. In this case, the carbon:

C = 7,125 / 7,125 = 1

H = 14,3 / 7,125 = 2

This means we have 1 atom of carbon and 2 atoms of hydrogen.

3. Write the empirical formula with the previously obtained atoms

Now that we obtained the atoms of each element, we just write the empirical formula with these numbers:

C₁H₂  but we can neglect the number one so:

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The graph of the function y = 2x + 3 is attached. See below for the characteristics of the Linear function.

The function provided exhibits qualities of a linear function, having a domain and range that encompass all real numbers.

Its slope or rate of change has a value of 2, while the intercepts are 3 for the y-axis and (-1.5,0) for the x-axis.

The absence of an axis of symmetry or vertex is indicative that this is not a quadratic function. Projectile motion is a practical example of a quadratic function.

Exponential functions, on the other hand, exhibit growth at a certain rate and are defined for all real numbers, with their range being positive real numbers. By studying exponential functions, one may observe exponential decay or growth as portrayed in the table.

Compound interest is an excellent real-world application of this kind of function.

Linear functions help model relations between two variables, quadratic functions can map parabolic forms, while exponential functions account for various growth/decay patterns.

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Reduce Vehicle Emissions decrease the amount of CO2 being removed from the atmosphere

Many of us drive cars every day, which are one of the greatest sources of CO2 in our environment. With a share of 31% of all emissions, this is the second-largest source of carbon dioxide produced in the US. However, this is not simply restricted to personal vehicles; anything that has an engine powered by gasoline or diesel contributes to this issue.

Limiting the quantity of CO2 your own car emits is the best personal solution to this problem. To make all of your journeys a little less wasteful, choose a hybrid or gas-efficient car. Additionally, carpool with colleagues or acquaintances, or whenever possible, take public transit to reduce the automobiles moving through the streets.

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automobiles moving through the streets.

Answer:

The second choice and can i have brainiest

Explanation:

The waves have a frequency of 1.43.

How does frequency work?

In physics, frequency refers to the number of waves that travel through a fixed point in one unit of time. also, the number of cycles or vibrations a body goes through on a regular basis in a given time period.The rate at which a periodic wave or signal repeats at a given amplitude is known as its frequency. It can be expressed in various units, including Hz, kilohertz, and megahertz.

The number of vibrations counted per second is known as frequency. An easy example is as follows: If five complete waves are made in a single second, the waves will have a frequency of 5 hertz (Hz), or 5 cycles per second. Higher amplitudes and higher frequencies are associated with more energy.

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Baking powder solution has an effect on a diluted hydrochloric acid solution by causing the release of carbon dioxide from sodium bicarbonate, a component of baking soda.

One molecule of backing soda + one molecule of hydrochloric acid yields one molecule of sodium chloride (table salt) + one molecule of carbon dioxide + one molecule of water.

HCl + NaHCO₃=NaCl+H₂CO₃

However, carbonic acid is quite unstable:

H₂CO₃ = CO₂ + H₂O

HCl + NaHCO₃ = NaCl + H₂O (Water) + CO₂.

Effervescence, which is a fast bubble formation, is how liquid releases CO2.

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The hydrogen bonding between HF and CH₃CH₂CH₂NH₂ is due to the dipole-dipole forces of attraction between the hydrogen atom of one molecule and the nitrogen or oxygen atom of the other molecule.

The hydrogen atom of the HF molecule is positively charged while the nitrogen atom of the CH₃CH₂CH₂NH₂ molecule is negatively charged, thus forming an attractive force between the molecules. The strong intermolecular force allows the molecules to form a hydrogen bond.

In more detail, the hydrogen bond between HF and CH₃CH₂CH₂NH₂ is formed when the hydrogen atom of HF molecule donates a pair of electrons to the lone pair of electrons on the nitrogen atom of CH₃CH₂CH₂NH₂ molecule.

As a result, the hydrogen atom of HF molecule forms a strong covalent bond with the nitrogen atom of CH₃CH₂CH₂NH₂ molecule, resulting in the formation of a hydrogen bond. This hydrogen bond is very strong and can be broken only when exposed to extreme temperature or pressure.

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The initial investment is $300 million, and the project is planned to operate for A0 years with an estimated salvage value of $20 million.

To calculate whether the city can recover the capital cost and other operating costs for the water-desalination plant, you can follow these step-by-step calculations:

Step 1: Calculate the annual revenue from selling water:

First, convert the water production from gallons to acre-feet:

Water production per day = 50 million gallons

Water production per year = 50 million gallons * 365 days = 18.25 billion gallons

Water production in acre-feet = 18.25 billion gallons / 325,851 gallons per acre-foot

Calculate the annual revenue from selling water:

Annual revenue = Water production in acre-feet * Price per acre-foot

Step 2: Calculate the annual operating and maintenance costs (excluding energy cost):

Operating and maintenance costs in the first year = $15 million

Calculate the annual operating and maintenance costs for subsequent years:

Operating and maintenance costs in year n = Operating and maintenance costs in year n-1 * (1 + Growth rate)

Step 3: Calculate the annual energy cost:

Energy cost per 10,000 gallons = $0.90

Calculate the annual energy cost:

Annual energy cost = Water production in gallons / 10,000 gallons * Energy cost per 10,000 gallons

Step 4: Calculate the annual cash flow:

Annual cash flow = Annual revenue - Annual operating and maintenance costs - Annual energy cost

Step 5: Calculate the present value of cash flows:

Use the present value formula to calculate the present value of cash flows over the A0 years:

PV = Annual cash flow / (1 + Interest rate)^Year

Step 6: Calculate the net present value (NPV):

NPV = PV - Initial investment

Step 7: Determine if the project is financially feasible:

If the NPV is greater than or equal to zero, the project is financially feasible and can recover the capital cost and other operating costs. If the NPV is negative, the project may not be able to recover the costs.

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the grams of citric acid added to a 355 ml (12 oz) soda is 3.55e-1 grams

Assuming a concentration of 0.1%, which is a common level, we can estimate the amount of citric acid in a 355 ml (12 oz) soda can as follows:

0.1% = 0.1/100 = 0.001

Mass of citric acid in a 355 ml soda can = 0.001 x 355 = 0.355 grams

Therefore, the estimated mass of citric acid in a 355 ml (12 oz) soda can is 0.355 grams, which can be written in scientific notation as 3.55e-1 grams.

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Answer:

Chlorine has 17 total electrons with electron configuration 1s^2 2s^2 2p^6 3s^2 3p^5.

What are the first two quantum numbers for the six electrons in the 2p subshell?

Explanation:

The principal quantum number represents the shell number in which the electron is present.

It is represented with "n".

The next quantum number is the azimuthal quantum number.

It represents the shape of the orbital.

It has values from 0 to (n-1).

Its value depends on the principal quantum number.

Chlorine has 17 total electrons with electron configuration 1s^2 2s^2 2p^6 3s^2 3p^5.

For the six elecetrons in 2p subshell:

The first two quantum number values are the same and their values are:

n=2 , l=1.

Answer:

the amount of neutrons would be the difference in the three isotopes