Microbial Fuel Cell Overall Oxidation-Reduction Reaction

Answer:

d took the test

Explanation:

By removing the need to build additional transmission lines and equipment, energy storage may reduce costs for utilities and their customers.

By removing the need to build additional transmission lines and equipment, energy storage may reduce costs for utilities and their customers. Energy storage's inherent ability to offer backup power in the event of grid failure is a feature that both residential consumers and commercial owners find highly desirable.

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Answer: arrangement of constituent particles makes glass diff. from quartz. Glass-short range order of particles.
Quartz-Long range of particles.

If quartz is heated and cooled rapidly it can be converted to glass.

The pressure of the environment affects the liquid's boiling point. The boiling point of the liquid is higher when it is under high pressure than when it is under normal atmospheric pressure. For a given pressure, various liquids have different boiling points.

The temperature at which a liquid's vapour pressure equals the surrounding atmosphere is known as the boiling point of the liquid. This temperature causes the liquid to become a vapour.

The temperature of the liquid, the pressure of the atmosphere, and the pressure of the vapour all affect its boiling point.

We know that change in temperature of a system is given by the following formula:

Initial boiling point (T₁) = 80.1 °C

ΔT = T₂ - T₁

2.25 = T₂ - 80.1

T₂ = 82.35  °C

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Answer:

82.35

Explanation:

acellus

Answer:

There are no units with electro negativity. Linus Pauling designed a scale of electro negativity that ranks elements with respect to each other. So, for example, fluorine is a 4.0 in comparison to 0.7 for francium.

Explanation:

It is the simplest whole number ratio of elements in a compound. Molecular formula is n times the empirical formula where n is integers 1,2,... The empirical formula is BH2N.

Empirical formula gives the proportion of the element that is present in a compound. It does not give information about the actual number or the arrangements of the atoms.

n= molecular formula÷ empirical formula

Molecular formula =B\(_3\)H\(_6\)N\(_3\)

Molecular formula = 3×BH2N

Molecular formula =3×empirical formula

Empirical formula = BH2N

Therefore, the empirical formula for this compound B\(_3\)H\(_6\)N\(_3\) is BH2N.

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Yes, it is critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer.

This is because the tap water is the water coming from the nearest lake so it should also be a good buffer just like the nearest lake so we can conclude that it is critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer.

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Answer:potassium is more reactive than Mg because both lie in the same group and the element potassium has more electropositivity than magnesium

Explanation:

I hope it will help you

Answer: B. Potassium(K)

Explanation:

Answer: metal turn orange and weaker as it gets oxidised

Explanation:

Answer:

It has its elements with mass numbers phrased in many decimal places, it requires one to round off to get the actual value.

The atomic numbers of some elements such as Protonium were just guessed.

Answer:

C. Determine the density of the object and compare the known density of pure silver.

Explanation:

A pure silver is a chemical substance that comprises of 0.1% of trace elements and 99.9% of silver. It is also known as fine silver in chemistry.

Due to the fact that pure silver has a very high level of purity, it is usually too soft for jewelry making and as such it's mixed with other metals such as copper, nickel, zinc, palladium etc. so as to make it hard.

In Chemistry, the best way to determine if an object is made of pure silver is to determine the density of the object and compare the known density of pure silver. This can be done by properly weighing the object to determine its mass and then determining its volume by checking how much water is displaced when completely immersed. The respective values for mass and volume of the object is then used to calculate its density.

Density can be defined as mass all over the volume of an object. Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the formula;

\(Density = \frac{mass}{volume}\)

After determining the density of the object, it is then compared with the density of pure silver which is ideally 10.5g/cm³.

Answer:

It would be 151.832775 because one mole is 44.0095*3.45 i hope this helps!

Explanation:

Answer:

the volume of a object will go down but the density stays the same

A pH of 4 is ten times more acidic than a pH of 5.

Yes, pH can have decimal values. In fact, pH values can range from 0 to 14 and can have any value between them including decimals. pH is a measure of the acidity or alkalinity of a solution, and it is determined by the concentration of hydrogen ions (H+) in the solution.A solution with a pH of 7 is neutral, which means that it has an equal concentration of hydrogen ions (H+) and hydroxide ions (OH-). An acidic solution has a pH below 7 and a high concentration of H+ ions. On the other hand, an alkaline solution has a pH above 7 and a low concentration of H+ ions.A pH that is less than 7.0 indicates acidity. pH less than 7.0 is acidic while pH greater than 7.0 is alkaline. Each number on the pH scale represents a ten-fold change in the acidity/alkalinity of the solution. For example, a pH of 5 is 10 times more acidic than a pH of 6, and 100 times more acidic than a pH of 7.A pH of 0 indicates a very strong acidic solution while a pH of 14 indicates a very strong alkaline solution. It's worth noting that pH is a logarithmic scale, meaning that a change of one pH unit corresponds to a ten-fold change in hydrogen ion concentration.

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If the temperature of the sample of gas changes from 25°C to 45°C, the volume of the gas will increase.

Charles's law is the gas law stating that the density of an ideal gas is inversely proportional to its temperature at constant pressure.

In other words, the law states the volume of a gas is directly proportional to the temperature of the gas. The equation is given as follows:

V₁/T₁ = V₂/T₂

Where;

According to this question, a sample of a gas at constant pressure increases in temperature from 25°C to 45°C. This means that as the temperature increases, the volume also increases.

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Answer:

A student is testing a solid material to determine whether it is a pure substance or a mixture. Which observation would MOST likely indicate that the material is a mixture? The material has crystals of two different colors. atom.

A mutation is a change that takes place in the sequence of our DNA as a result of errors made during DNA replication or environmental influences like UV light and cigarette smoke.

Base substitutions, deletions, and insertions are the three different forms of DNA mutations. Base Substitutions, first. Point mutations are single nucleotide substitutions; consider the point mutation Glu ——-> Val is the culprit of sickle cell anemia. There are two types of point mutations, the most prevalent of which are.

Your cells' ability to create proteins and respond to changes in your environment can occasionally be improved by changes in the way that cells function. A genetic mutation that can prevent heart disease or diabetes in spite of a history of smoking or being overweight is an example of a favorable genetic change.

Thus, A mutation is a change that takes place in the sequence of our DNA as a result of errors made during DNA replication or environmental influences like UV light and cigarette smoke.

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Answer:

5

Explanation:

Arsenic is in row 4 which means it has 4 electron energy levels. The bottom number in the box on the PT is the energy level with the MOST energy.

Answer:

Phosphorus 1 and Oxygen 4:

Electron dot structure:

.. .

: P :: O :

.. .

Molecular formula: P4O10

Structural formula:

O

//

O=P-O-P=O

�

O

Nitrogen 1 and Oxygen 1:

Electron dot structure:

: N :

. .

:O:

. .

Molecular formula: NO

Structural formula:

O

//

N=O

Ammonia NH3 and Hydrogen ION H+:

Molecular formula: NH4+

Structural formula:

H

|

H - N - H

|

H

Boron 1 and Nitrogen 1:

Electron dot structure:

: B :

. .

: N :

. .

Molecular formula: BN

Structural formula:

N

/

B=N

Explanation:

Answer:

thete are 672 seeds in 14 kg

125 is the minimum number of ice cubes at 0°C, each holding one mole of water, required to chill 500 g of liquid water.

The equation q = msΔt may be used to compute the specific amount of heat acquired or lost by a sample (q), where m is the mass of the sample, c is the specific heat, and Δt is the temperature change.

We know that,

q = msΔt

q = 500(75.4)(20)

  = 754000 J

  = 754 kJ

Number of moles of water(ice) that will melt to absorb 754 kJ                              =  754/6.02

=  125

Thus, 125 ice cubes at 0°C, each holding one mole of water, are required to freeze 500 g of liquid water.

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Answer:

12 moles H

2

O

Explanation:

Your tools of choice for stoichiometry problems will always be the mole ratios that exist between the chemical species that take part in the reaction.

As you know, the stoichiometric coefficients attributed to each compound in the balanced chemical equation can be thought of as moles of reactants needed or moles of products formed in the reaction.

In your case, the balanced chemical equation for this synthesis reaction looks like this

2

H

2(g]

+

O

2(g]

→

2

H

2

O

(l]]

Notice that the reaction requires  

2

moles of hydrogen gas and  

1

mole of oxygen gas to produce  

2

moles of water.

This tells you that the reaction produces twice as many moles of water as you have moles of oxygen gas that take part in the reaction.

You know that your reaction uses  

6.0

moles of oxygen. Assuming that hydrogen gas is not a limiting reagent, you can say that the reaction will produce

6.0

moles O

2

⋅

2

moles H

2

O

1

moles O

2

=

12 moles H

2

O

Explanation:

Answer:

“Magma” is exclusively found and formed beneath the earth’s surface. Once magma is on or above the surface of the earth it is referred to as “lava.” Magma is typically formed by extreme temperature melting solid rock within the earth. Pressure and rock composition can also affect magma formation. High pressure can help magma be “squeezed” from partially molten rock. Likewise, as rocks are usually composed of different minerals with different melting points, magma formation from rocks is usually only partial and uneven.

Explanation:

Answer:

lungs

Explanation:

Answer:

the highest is "A" and the lower is "C"

Answer:

The person at the top said the right answer I checked

Answer:

The waters' temp increased

Explanation:

The temperature of the water in the swimming pool has increased due to the heat from the Sun. As a result, the particles in the water are moving faster and have a higher kinetic energy than in the morning.

Answer:

Sucrose is a disaccharide; each molecule consists of two "simple" sugars (a glucose and a fructose), called monosaccharides.

Because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. 2.88 is the  pH of a 0.01 M acetic acid.

Any hydrogen that comprises a material capable of giving a proton (a hydrogen ion) to another chemical is defined as acid. A base is indeed a molecule or ion that can receive a hydronium ion from just an acid.

1)Because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. The pH value of stronger acid is lower.

2)CH\(_3\)COOH + H\(_2\)O  ⇄ CH\(_3\)COO⁻+  H\(_3\)O⁺

 0.01             0               0

 -x              +x                +x

 0.01-x           +x        +x

Ka=[ CH\(_3\)COO⁻][H\(_3\)O⁺]/[CH\(_3\)COOH]

1.8×10⁻⁵ = [x][x ]/[  0.01-x ]

x=1.34×10⁻³

pH = -log[H⁺]

     =  -log[1.34×10⁻³]

     =2.88

Therefore, because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. 2.88 is the   pH of a 0.01 M acetic acid.

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