i have the most potential energy if i am​

Explanation:

1) 3,4-dimethyl hex-1,5-diyne

2) 3,3-diethyl pent-4-yn-1-ene

3) 5-(1'-ethyl-2',3'-dimethyl propane) dec-1,3-diyne

The standard free energy of formation is S(g) + O₂(g) → SO₂(g) and the correct option is option 1.

The standard free energy of formation (ΔG°f) is defined as the change in free energy when one mole of a substance is formed from its elements under standard conditions (usually at 25°C and 1 atm).

To calculate the standard free energy of formation, we need the standard enthalpy of formation and the entropy change at STP.

Enthalpy is the measurement of energy in a thermodynamic system. The quantity of enthalpy equals to the total content of heat of a system, equivalent to the system’s internal energy plus the product of volume and pressure.

Thus, the ideal selection is option 1.

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Answer:

OF2 + H2O ---> 2HF + O2

Explanation:

^_^

Answer:

C) Lighting a matchstick

Explanation:

Mixing an acid and base will cause a neutralization reaction, a type of double displacement.

Photosynthesis is just a series of chemical reactions, but don't deal with the use of O2, but rather it's creation.

Reacting sodium and chlorine would make NaCl in a synthesis reaction.

Answer:

C) Lighting a matchstick

Explanation:

The first step we have to follow is to find the molar mass of FeCl2 using the atomic masses of each element:

It means that each mole of FeCl2 has a mass of 126.745g/mol.

Use the molar mass to find the mass of the given amount of moles:

It means that there are 110,141.405 grams of FeCl2.

In scientific notation it would be 1.10x10^5g.

there are 110,141.405 grams of FeCl2

Answer:

Pitch:it refers to the highest and lowness of a sound.

Wavelength: It is the distance measured from one crest to another, or from one trough to another.

Refraction of Light: The light bends as it travels from one medium to another.

Reflection of Light: It happens when light bounces back after hitting a well-polished surface.

Crest: The highest point of the wave from the center.

I hope this helps! :)

Answer:

Density: if you take alcohol and look at its density and divide the alcohol into two containers the density will be the same.

Temperature: if you take an ice cream and split it, the temperature will be the same in the two pieces.

Explanation:

Explanation:

Sucrose is a polar molecule. The polar water molecules attract the negative and positive areas on the polar sucrose molecules which makes sucrose dissolve in water.

The proton transfer reaction between Cyanide and water can be written as; X^- + H2O -----> HX + OH^-

A proton transfer reaction is one in which a proton is moved from one chemical specie to another.It is in fact and acid - base reaction in the Brownstead - Lowry sense.

The proton transfer reaction between Cyanide and water can be written as(Let the cyanide ion be shown as X);

X^- + H2O -----> HX + OH^-

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The proton transfer reaction to form hydrogen cyanide and hydroxide is

X⁻ + H₂O → HX + OH⁻

A reaction in which a proton H⁻ is removed from one species and accepted by another species.

An example of a proton transfer is Brønsted acid reacting with a Brønsted base.

Thus, the proton transfer reaction to form hydrogen cyanide and hydroxide is X⁻ + H₂O → HX + OH⁻

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Be has the lowest electronegativity. This is because electronegativity generally increases as you move down a group and to the right of a period, and Be is located at the top left of the periodic table.

Li has the least metallic character. This is because metallic character generally decreases as you move down a group and to the right of a period, and Li is located at the top left of the periodic table.

Mg has the largest atom. This is because atomic radius generally increases as you move down a group and to the left of a period, and Mg is located in the middle of the second period.

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Fertilizer from suburban lawns and wastewater from a water treatment plant.

What is fertilizer?

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Answer:

Of the options below, which is an example of a point source of water pollution?

Litter and pet waste are left on a city’s beaches.

Landscapers' fertilizers and pesticides are sprayed on the lawns of a neighborhood.

Acidic runoff from abandoned mines contains lead and mercury that saturate the soil.

A factory’s wastewater pipe opens directly over a nearby river.

CONCEPT

Explanation:

Correct Answer:

A factory’s wastewater pipe opens directly over a nearby river.

The cell potential at 25.8°C if the copper electrode is placed in a solution of 0. 10 m NaOH that is saturated with Cu(OH)₂ is -0.342 V.

When the copper electrode is placed in a solution of 0.10 M NaOH that is saturated with Cu(OH)₂, the cell potential at 25.8°C can be calculated by using the Nernst equation. Let's first write the balanced half-reactions and overall equation for the cell:

The cell potential, Ecell can be calculated by subtracting the reduction potential from the oxidation potential.

Ecell = E°ox + E°red = -0.34 V + 0 V = -0.34 V

Now, using the Nernst equation:

Ecell = E°cell - (0.0592/n) log(Q)

where

Q = [Cu²⁺][H₂]/[Cu][H⁺]

n = number of electrons transferred = 2

We are given:

Since the solution is saturated with Cu(OH)₂, [Cu²⁺] can be calculated from Ksp of Cu(OH)₂:

Ksp = [Cu²⁺][OH⁻]²

= 1.63 × 10⁻¹⁹mol²/L³ => [Cu²⁺]

= 3.21 × 10⁻¹⁰ M

Now, [H⁺] can be calculated from the given 0.10 M NaOH solution which completely dissociates into OH⁻:

OH⁻ + H₂O ⇌ H⁺ + OH⁻

Kw = [H⁺][OH⁻] = 1 × 10⁻¹⁴M² => [H⁺] = 1 × 10⁻¹⁴/0.10 M = 1 × 10⁻¹³ M

Q = [(3.21 × 10⁻¹⁰)/1] (1) / (1 × 10⁻¹³)³= 3.21 × 10⁻¹⁰

Ecell = E°cell - (0.0592/2) log(Q) = -0.34 V - (0.0296) log(3.21 × 10⁻¹⁰)

≈ -0.342 V

Therefore, the cell potential at 25.8°C is -0.342 V.

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Answer:

its A

Explanation:

Answer:

C. Ions combine in only one ratio

Explanation:

Just took the quiz

Rhizobium bacteria were soil microbes that have the ability to convert dissolved nitrogen from the atmosphere. These root nodules on woody plants contain rhizobium bacteria.

The nitrogen cycle is finished by denitrification, which turns nitrate (NO3-) back into gaseous nitrogen (N2). The driving force behind this procedure is denitrifying microorganisms. These bacteria generate energy from nitrate rather than oxygen, which results in the release of nitrogen gas into the environment.

Azotobacter, Bacillus, Clostridium, or Klebsiella species are a few instances that belong to this category of nitrogen-fixing bacteria. These organisms must acquire their own energy source, as was previously said. Typically, they do this by oxidising organic molecules generated by the other organisms or as a result of decomposition.

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Answer:

"Hydrogen is still available outside the core, so hydrogen fusion continues in a shell surrounding the core. The increasingly hot core also pushes the outer layers of the star outward, causing them to expand and cool, transforming the star into a red giant."

Answer:

D: lose an electron

Explanation:

when an atom loses an electron it's positively charged and when it gain an electron it is negatively charged

The standard cell potential for the given redox reaction is +1.878 V  when standard reduction potentials for \(Ni^{2+\) and Ag+ are given.

The standard cell potential for the redox reaction Ni(s) + \(2Ag^+\)(aq) → \(Ni^{2+\)(aq) + 2Ag(s) can be calculated using the standard reduction potentials given:
\(Ni^{2+\)(aq) + 2e- → Ni(s) E°red = -0.280 V
\(Ag^+\)(aq) + e- → Ag(s) E°red = +0.799 V
First, reverse the equation for nickel to represent the oxidation half-reaction:
Ni(s) → \(Ni^{2+\)(aq) + 2e- E°ox = +0.280 V
Next, multiply the silver reduction half-reaction by 2 to balance the electrons:
\(2Ag^+\)(aq) + 2e- → 2Ag(s) E°red = 2(+0.799 V) = +1.598 V
Now, add the two half-reactions:
Ni(s) + \(2Ag^+\)(aq) → \(Ni^{2+\)(aq) + 2Ag(s)
Calculate the standard cell potential (E°cell) by adding the standard oxidation potential (E°ox) and standard reduction potential (E°red):
E°cell = E°ox + E°red = +0.280 V + (+1.598 V) = +1.878 V
So, the standard cell potential for the given redox reaction is +1.878 V.

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Answer:it’s 12.8cm^2 and I saw that last anwser and he’s not wrong but yeah I had trouble figuring it out but it’s just force divided by area for both tires multiply that by 2

Explanation:

A bicycle weighs 780. pounds. If the pressure exerted by its tires on the ground is 30.5 pounds per square centimeter, the area of one of the two tires that's in contact with the road is 12.8cm².it’s just force divided by area for both tires multiply that by 2.

Pressure is defined as the force applied perpendicular to an object's surface per unit area over which that force is distributed. Gauge pressure is the pressure in relation to the surrounding atmosphere. Pressure is expressed using a variety of units.

Pressure is defined as force per unit area of surface; the SI unit of pressure is the pascal (Pa), which is defined as one newton per square metre (N/m2). An object's pressure is proportional to the force it exerts and inversely proportional to the area over which the force is exerted.

The physical force exerted on an object is defined as pressure. The force applied per unit area is perpendicular to the surface of the objects. F/A is the basic pressure formula (Force per unit area).

Thus, the area of one of the two tires that's in contact with the road is 12.8cm².

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Answer:

wait so dose it acid burn your body I would say hydrogen but I'm probably wrong tell me if I am

B

Hope this helped you, have a good day bro cya)

Answer: Although metamorphic rocks typically form deep in the planet's crust, they are often exposed on the surface of the Earth.

Explanation:

Answer:

C

Explanation:

it demonstrated that scientific understanding was always changing

In double replacement reactions, two metals not combine with each other when products are formed because, metals form negative ions and like charges attract. Therefore, option A is correct.

A metal is a substance that exhibits a shiny appearance when freshly processed, polished, or shattered, and conducts electricity and heat rather well. Generally speaking, metals are malleable and ductile.

We use the (s) symbol for solid because salt is an insoluble substance that will not dissolve in water. The silver, fluoride, potassium, and chloride ions would have effectively moved to a new location if there had been no precipitate formation, but they would still be floating around as ions. In this instance, nothing happens.

When two ionic compounds exchange ions and create two new ionic compounds, this is known as a double replacement reaction.

Thus, option A is correct.

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Answer:

Explained below

Explanation:

In a decomposition reaction, a substance (commonly a molecule) descomposes in the elements that originally formed it.

The standard formula is:

AB > A + B

In fact, is the opposite of a synthesis reaction.

An example of decomposition reaction is:

H2O > 2H + O

Answer:

It reaches a certain temperature that freezes the substance completely

The freezing point of a substance is the temperature at which it transitions from a liquid phase to a solid phase at a given pressure. It is the temperature at which the liquid and solid phases of a substance coexist in equilibrium. At the freezing point, the temperature of a substance remains constant until all of the liquid has been converted to a solid. Different substances have different freezing points, which can be used to identify the substance or to monitor its purity...

Bromine is a better leaving group than chlorine because it is larger and less electronegative than chlorine. This means that the bond between bromine and the carbon in an organic molecule is weaker and more easily broken than the bond between chlorine and carbon.

In addition, bromine is polarizable due to its larger size, which means that it can more easily accommodate an unfavorable charge distribution during bond formation. This reduces the energy required for the bond to break and the leaving group to depart.

Therefore, organic reactions that involve bromine as a leaving group tend to proceed more easily and quickly than those involving chlorine as a leaving group.

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An ionic compound contains only a metal, m, and bromine. if analysis indicates that a 3.66 g sample of the compound contains 2.14 g of m then mass of br in g is contained in 468 g of the mineral is 273.63g

Ionic compound means a chemical compound composed of ions held together by electrostatic forces termed ionic bonding

Here given data is 3.66 g sample and in that 2.14 g of m and 468 g  have to find mass of br = ?

So,  m₁/m₂ = 3.66 g/2.14 g,  w₁/w₂ = 468 g/w₂

Cross multiply this equation then

w₂×3.66 g/2.14 g×468 g

w₂ = 2.14 g×468 g/3.66 g =273.63g

w₂ = 273.63g

Mass of br in g is contained in 468 g of the mineral is  273.63g

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The noble gas with an atomic mass less than gold, but more than silver, is platinum. Noble gases are found in small amount in earth atmosphere.

The noble gases are a group of chemical elements that share several characteristics. They are all monatomic, odorless, and colorless gases with relatively little chemical reactivity under normal conditions. Helium, neon, argon, krypton, xenon, and radioactive radon are the six types of noble gases that are found in nature.

These gases don't receive, lose, or share electrons, making them inert or unreactive. They are also referred to as noble gases due to their rarity in the atmosphere of the earth.

Thus, The noble gas with an atomic mass less than gold, but more than silver, is platinum.

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