During aerobic respiration electrons travel downhill in which sequence?.

The acid that will react with strontium hydroxide to produce strontium chloride in a neutralization reaction is hydrochloric acid (HCl).

When strontium hydroxide reacts with hydrochloric acid, the products formed are strontium chloride (SrCl2) and water (H2O). The chemical equation for the neutralization reaction is as follows:

Sr(OH)2 + 2HCl → SrCl2 + 2H2O

Here, Sr(OH)2 is the base (strontium hydroxide) and HCl is the acid that undergoes a neutralization reaction. The products formed are a salt (strontium chloride) and water.

Neutralization reactions are a type of chemical reaction that occurs when an acid reacts with a base to form a salt and water.

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0.00486 g of magnesium will react with an excess of hydrochloric acid to produce 500 mL of H2 (g) at STP.

The ideal gas is the virtual gas that chemists and students dream of because it would be much simpler if there weren't some kind of intermolecular force that would complicate the simple law of the ideal gas. An ideal gas is essentially a point cloud moving with constant random linear motion. Its behavior is described by the assumptions described in the kinetic molecular theory of gases. This ideal gas definition contrasts with the non-ideal gas definition. This is because this equation describes how gases actually behave.

The ideal gas law states that the product of pressure and volume in a gram molecule of an ideal gas is equal to the product of the gas's absolute temperature and the universal gas constant.

PV = nRT

Where, n = number of moles.

P = Pressure (1 atm)

T = Temperature (273 K)

V = Volume (0.5 L)

R = Ideal gas constant (8.314J/K⋅mol)

Now, substitute the values:

1 × 0.5 = n × 8.314 × 273

n = 0.00022 moles

Mg + 2HCl → MgCl₂ + H₂

The mole ratio of Mg and H₂ is 1:1 for the given reaction

Hence the number of moles for Mg will be same as H₂, which is 0.00022 moles.

For the mass of Mg:

m = n × Mm

Where, m = mass

n = number of moles (0.00022 moles)

Mm = molar mass (24.3 g/moles)

m = 0.00486 g

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Answer:

weathering and erosion

Explanation:

Sand forms when rocks break down from weathering and eroding over thousands and even millions of years. Rocks take time to decompose, especially quartz (silica) and feldspar. Often starting thousands of miles from the ocean, rocks slowly travel down rivers and streams, constantly breaking down along the way.

Answer:

weathering and erosion

Answer:

Oil spills

Explanation:

I've done it before

The structure of 3-ethyl-2 fluroheptane is attached. The chemical formula of the compound is C9H19F.

It is an organic compound which has one pair of hydrogen and acceptor and zero hydrogen bond donor.

The chemical formula of the compound is \(C_9H_1_9_F.\)

Thus, the structure of 3-ethyl-2 fluroheptane is attached. The chemical formula of the compound is C9H19F.

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option c.The wax vapors are what catch fire in a candle flame.

A candle flame is a visible light-emitting element that appears when a candle burns. A wick of the candle draws the melted wax upward, and the heat from the wick vaporizes the wax to generate a visible flame.

When a candle burns, the heat of the flame vaporizes the wax close to the wick. This vaporized wax, which is made up of a variety of hydrocarbons, then responds with oxygen from the air to produce heat, light, water vapor, and carbon dioxide.

Candle flames have a cone shape that is divided into three zones: the dark zone, the luminous zone, and the outer zone. In the dark zone, there is no combustion since there is insufficient oxygen.

Hydrocarbons such as vaporized wax rise into the luminous zone, where they react with oxygen to generate light and heat. The outermost zone is where the hydrocarbons and oxygen meet, causing a blueish-white light to be emitted.The correct answer is option c.

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The net ionic equation for the behavior of ethylamine (C₂H₅NH₂) as a Bronsted-Lowry base in water is:

C₂H₅NH₂ + H₂O → C₂H₅NH₃⁺ + OH⁻

The net ionic equation for the behavior of benzoic acid (C₆H₅COOH) as a Bronsted-Lowry acid in water is:

C₆H₅COOH + H₂O → C₆H₅COO⁻ + H₃O⁺

In water, ethylamine (C₂H₅NH₂) can act as a Bronsted-Lowry base by accepting a proton (H⁺) from water. The reaction can be represented by the net ionic equation: C₂H₅NH₂ + H₂O → C₂H₅NH₃⁺ + OH⁻. In this equation, ethylamine (C₂H₅NH₂) accepts a proton from water (H₂O) to form the ethylammonium ion (C₂H₅NH₃⁺) and hydroxide ion (OH⁻). This shows the base behavior of ethylamine as it accepts a proton.

On the other hand, benzoic acid (C₆H₅COOH) can act as a Bronsted-Lowry acid in water by donating a proton (H⁺) to water. The reaction can be represented by the net ionic equation: C₆H₅COOH + H₂O → C₆H₅COO⁻ + H₃O⁺.

In this equation, benzoic acid (C₆H₅COOH) donates a proton to water (H₂O) to form the benzoate ion (C₆H₅COO⁻) and hydronium ion (H₃O⁺). This demonstrates the acid behavior of benzoic acid as it donates a proton.

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Answer:

The 3p electron in M has jumped down to a lower energy state  

Explanation:

L  - 1s² 2s²2p⁶ 3s²

M - 1s² 2s²2p⁶ 3s3p

L and M have the same number of electrons, so they are atoms of the same element.

Atom M is an excited state of atom L.

Either atom L has been excited to atom M or atom M has dropped to the ground state to form atom L.

A is wrong. Both atoms have two 2p electrons.

B is wrong. Atom L has no 3p electrons.

C is wrong. The 3s electron of atom L is already in its lowest energy state.

A) All of the following enforce municipal securities industry rules EXCEPT Office of the Comptroller of the Currency.

The Office of the Comptroller of the Currency (OCC) primarily regulates and supervises national banks and federal savings associations. While it plays a crucial role in overseeing the banking system, it is not directly responsible for enforcing municipal securities industry rules. On the other hand, the other options listed—MSRB (Municipal Securities Rulemaking Board), FINRA (Financial Industry Regulatory Authority), and SEC (Securities and Exchange Commission)—are all involved in regulating and enforcing rules related to municipal securities.  The MSRB is a self-regulatory organization that creates rules and regulations for broker-dealers and banks engaged in the municipal securities market. FINRA is another self-regulatory organization that oversees brokerage firms and their registered representatives, including those involved in municipal securities transactions. The SEC, as the primary regulatory body for the securities industry, has the authority to enforce rules and regulations related to municipal securities to protect investors and ensure fair and transparent markets.

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The correct name for P4Br7 is Tetraphosphorus heptabromide, which results from using prefixes to indicate the numbers of each type of atom present.

The correct name for the compound P4Br7 is D. Tetraphosphorus heptabromide. In chemical naming, the prefix 'tetra-' is used for four of an atom, in this case, phosphorus. Similarly, 'hepta-' is the prefix for seven, referring to the seven bromide atoms present. Therefore the name becomes Tetraphosphorus heptabromide.

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The solution concentration is approximately 0.008525, or 0.8525% (assuming the concentration is expressed as a percentage).

To determine the solution concentration using the given best fit line equation and %T value, we can rearrange the equation to solve for x, which represents the solution concentration.

The equation given is: y = 7978x - 0.006

Let's substitute %T = 68.0 for y in the equation:

68.0 = 7978x - 0.006

Now, solve for x by isolating it

7978x = 68.0 + 0.006

7978x = 68.006

x = 68.006 / 7978

x ≈ 0.008525

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Answer:

chemical, is the answer your looking for

The number of electrons in the valence shell of a cation depends on the specific element and its charge. Unpaired electron spins in a cation can vary based on the electron configuration and the presence of unpaired electrons.

The valence shell of a cation, which is a positively charged ion, contains fewer electrons compared to its neutral atom. The number of electrons in the valence shell of a cation is determined by the element and its charge. For example, if we consider a sodium (Na) atom, which has 11 electrons and loses one electron to form the Na+ cation, the valence shell of the cation would have 10 electrons.

The presence of unpaired electron spins in a cation depends on the electron configuration of the neutral atom and the way electrons are lost to form the cation. If the neutral atom has unpaired electrons in its valence shell, these unpaired electrons may still be present in the valence shell of the cation. However, if all the valence electrons of the neutral atom are paired, the resulting cation would not have any unpaired electron spins.

To determine the specific number of unpaired electron spins in a cation, one would need to consider the electron configuration and the specific element. For example, in the case of an iron (Fe) cation, if the neutral Fe atom has an electron configuration of [Ar] 3d^6 4s^2, the Fe2+ cation would have an electron configuration of [Ar] 3d^6. In this case, there are four unpaired electron spins in the valence shell of the Fe2+ cation.

In summary, the number of electrons in the valence shell of a cation depends on the specific element and its charge, while the presence of unpaired electron spins in a cation is determined by the electron configuration and the way electrons are lost during the formation of the cation.

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Answer:

The answer is HSO4- is a weak acid which will be C

The acid dissociation constant, ka, of HSO4- indicates that it is a strong acid. Details about acid dissociation constant can be found below.

The acid dissociation constant denoted by Ka is the measure of the strength of an acid.

The dissociation constant of an acid is used to identify strong acids from their weak counterparts. Strong acids have high Ka values while weak acids have low Ka values.

According to this question, the Ka of HSO4- is 1.2 × 10-², which is quite high.

Therefore, the dissociation constant, ka, of HSO4- suggests that it is a strong acid.

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Buffer maintained for all additions, capacity not exceeded

The addition of 1.30 g of HI and 240 mg of NaOH to the 480 mL buffer solution (0.100 M HNO2 and 0.140 M KNO2) will not exceed the capacity of the buffer to neutralize them. Both HI and NaOH are not components of the original buffer, so their addition will not disrupt the buffer's ability to maintain its pH. Similarly, the addition of 1.30 g HBO (assuming it's water) and 320 mg KOH will not exceed the buffer's capacity. Water does not contribute to changes in pH, and KOH is not part of the buffer system. Therefore, in all cases, the buffer will remain maintained without its capacity being exceeded.

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A 480 mL buffer solution is capable of neutralizing the addition of 1.30 g of HI, 240 mg of NaOH, and 320 mg of KOH.

buffer solutions and their capacity to neutralize added substances. Buffer solutions are designed to resist changes in pH when small amounts of acid or base are added. They consist of a weak acid and its conjugate base (or vice versa) and work by neutralizing the added acid or base through the equilibrium reactions of the acid-base pair.

In this case, the buffer solution contains HNO2 and KNO2. HNO2 is a weak acid, and KNO2 is its conjugate base. The concentration of HNO2 is 0.100 M, and the concentration of KNO2 is 0.140 M in the 480 mL buffer solution.

To determine if the buffer can neutralize the additions without exceeding its capacity, we need to consider the equilibrium reactions involved. When an acid or base is added to the buffer, it reacts with the weak acid or its conjugate base to form the corresponding conjugate base or acid.

In conclusion, the buffer solution is capable of neutralizing the additions of 1.30 g of HI, 240 mg of NaOH, and 320 mg of KOH without exceeding its capacity, provided the volume change is insignificant.

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Answer:

Polarity

Explanation : Water's polarity allows it to dissolve other polar substances very easily. When a polar substance is put in water, the positive ends of its molecules are attracted to the negative ends of the water molecules, and vice versa. Because of Capillary action occurs because water is sticky, thanks to the forces of cohesion (water molecules like to stay close together). Since they are close together, they can't move because they ain't enough space to move they like a liquid or solid. Adhesion of water to the walls of a vessel will cause an upward force on the liquid at the edges and result in a meniscus which turns upward. The surface tension acts to hold the surface intact. They both are holding the momentum in place and nothing really happening because it trapping the momentum from moving. Both just hold the structure but, nothing is happening with capillary action and Adhesion.

The molar mass of the gas, given that 3.25 g of the gas occupied 2.56 L is 30.66g/mol

To obtain the molar mass of the gas, we shall first obtain the number of mole of the gas. This can be obtained as follow:

PV = nRT

0.95 × 2.56 = n × 0.0821 × 280

Divide both sides by (0.0821 × 280)

n = (0.95 × 2.56) / (0.0821 × 280)

n = 0.106 mole

Haven obtain the mole of the gas, we shall determine the molar mass of the gas as follow:

Molar mass = mass / mole

Molar mass of gas = 3.25 / 0.106

Molar mass of gas = 30.66g/mol

Thus, the molar mass of the gas is 30.66g/mol

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Answer: 63.26%

Explanation:

If we let the abundance of the first isotope be x, then:

\(69.66=(68.9255)(x)+(70.9247)(1-x)\\69.66=68.9255x+70.9247-70.9247x\\-1.2647=-1.9992x\\x=\frac{-1.2647}{-1.9992} \approx 0.6326\)

Which is equal to 63.26%

Answer:

See note under explanation

Explanation:

That the particles have mostly non-polar structures or, have a very low degree of electronegativity (i.e. very low or no attractive interactions) so that particle - particle interaction favors the gas phase when not in an equilibrium based environment. That is, a closed container of liquid were liquid phase is in equilibrium with gas phase. However, when not in a closed container; i.e., spilled, particles evaporate rapidly moving into the gas phase from liquid phase.

Hope this helps. :-)

The molecule of the liquid which quickly evaporates means that it has a non

polar structure.

Polar substances have the presence of regions of positive and negative

charges in them which makes them more stable. Non polar compounds on

other hand have charges distributed in a spherically symmetric manner.

Non polar substances are less stable and have very low boiling points and

is the reason  the liquid quickly evaporated when it was spilled.

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The answer  is "Law of Conservation of Mass".

The Law of Conservation of Mass is a fundamental principle in physics and chemistry that states that the mass of a closed system will remain constant over time, regardless of any changes that may occur within the system. This means that the properties of an object or substance remain the same, even if its appearance is altered in some superficial way.

The Law of Conservation of Mass was first proposed by Antoine Lavoisier in the late 18th century, and it has since become one of the cornerstones of modern science. The law states that the total mass of any closed system will remain constant over time, regardless of any changes that may occur within the system. This means that if you were to take a block of wood and burn it, the mass of the ash and smoke produced would be equal to the mass of the original block of wood. Similarly, if you were to dissolve a spoonful of salt in a glass of water, the total mass of the saltwater solution would be equal to the mass of the salt and water before they were mixed together.

The Law of Conservation of Mass is important because it helps scientists understand how matter behaves in different situations. For example, if you were to mix two chemicals together in a beaker and observe a chemical reaction taking place, you could use the Law of Conservation of Mass to determine whether the total mass of the system had changed during the reaction. If the total mass remained constant, it would indicate that no matter had been lost or gained during the reaction, which could help scientists understand the underlying chemistry of the reaction.

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Answer:

natural gas

Explanation:

natural gas is formed deep beneath Earth's surface which primarily consist of methane.

methane is considered cleanest burning fuel.

Answer:

According to the current knowledge, static EF can cause effects on the body via changes in the distribution of electric charges on the surface of the body. A sufficiently large surface charge density may be perceived through its interaction with body hair and by other effects such as spark discharges (micro-shocks).

Explanation:

Answer:

I am going to say B

Explanation:

According to the given statement The molarity of the iron(II) solution is 0.648 M.

The amount of the sample in a specific solution volume is defined as its molarity (M). The molarity of a solute per litre of a solution is known as molarity. The molar concentration is yet another name for molarity.

Iron(II) solution volume (V₁) = 25.0 mL/0.025 L

Dichromate solution (V₂) has a volume of 18.0 mL, or 0.018 L.

Dichromate solution molarity (M₂) = 0.150 M

Molarity of dichromate solution is :

M₂ = n₂/V₂

(n₂  = M₂* V₂ = 0.150  * 0.018 = 2.7 * 10⁻³ mol

Complete balanced equation is given below.

\(6 \mathrm{Fe}^{2+}(a q)+\mathrm{Cr}_2 \mathrm{O}_7^{2-}(a q)+14 \mathrm{H}^{+}(a q) \rightarrow 6 \mathrm{Fe}^{3+}(a q)+2 \mathrm{Cr}^{3+}(a q)+7 \mathrm{H}_2 \mathrm{O}\)

It is obvious from the equation that 1 mole of dichromate is needed to make 6 moles of iron(II) solution.

Therefore, we calculate the number of moles of iron(II) solution using the unitary technique.

1 mole of dichromate is equal to 6 moles of iron (II)

6n₂ moles of iron are equal to n₂ moles of dichromate (II)

=6 * 2.7 * 10⁻³ = 0.0162 mol Fe²⁺

So, 0.0162 moles of iron(II) is needed. Therefore,

Now, molarity of iron(II) solution is given as: n\(_1\) = 0.0162

Molarity = Moles ÷ Volume

M₁ = n\(_1\)/V₁

M₁ = 0.0162mol/0.025 L = 0.648 M

The molarity of the iron(II) solution is 0.648 M.

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The complete question is -

The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.150M solution of dichromate to reach the equivalence point. What is the molarity of the iron(II) solution?

Answor

c                                              

Explanation: