Write the balanced oxdiation and reduction half reactions for
the following;
IO3(-) + 8I(-) + 6H(+) ---> 3I3(-) + 3H2O

Answer:

1 no is the correct answer

.ANSWER

STEP-BY-STEP EXPLANATION

From the question given, you were asked to name a compound

Cobalt (II) Bromide Heptahydrate

The heptahydrate in the compound means it has 7 molecules of water

Therefore, the chemical formula can be written below as

Answer:The explanation is true

Directly proportional is like temperature and volume

V=kT  as Temp increases, volume increases

Inversely proportional is like pressure and volume

VP=k  as P increases, V decreases.

since wavelength time frequency is the speed of light,

wavelength and frequency are inversely proportional

lf=c

Explanation:

In electromagnetic waves, the frequency and wavelength are inversely proportional, which means if one gets larger, the other must get smaller. ...

a. The CEC of the soil is 55 cmolc per kg.
To calculate the CEC (cation exchange capacity) of the soil, we need to sum the cation charges of the given elements.

Ca has a charge of 2 (Ca2+), and its concentration is 6 cmolc per kg.
Mg has a charge of 2 (Mg2+), and its concentration is 4 cmolc per kg.
K has a charge of 1 (K+), and its concentration is 3 cmolc per kg.
Na has a charge of 1 (Na+), and its concentration is 2 cmolc per kg.
Al has a charge of 3 (Al3+), and its concentration is 10 cmolc per kg.

Summing these values, the total cation charges are:
(2 x 6) + (2 x 4) + (1 x 3) + (1 x 2) + (3 x 10) = 12 + 8 + 3 + 2 + 30 = 55 cmolc per kg.

Therefore, the CEC of the soil is 55 cmolc per kg.

b. The base saturation of the soil is approximately 45.45%.

To calculate the base saturation, we need to divide the sum of the charges of the base cations (Ca, Mg, K, and Na) by the CEC and multiply by 100.

The sum of the charges of the base cations is:
(2 x 6) + (2 x 4) + (1 x 3) + (1 x 2) = 12 + 8 + 3 + 2 = 25 cmolc per kg.

The base saturation can be calculated as:
(base cations / CEC) x 100 = (25 / 55) x 100 = 45.45%

Therefore, the base saturation of the soil is approximately 45.45%.

c. To raise the base saturation to 60%, approximately 8 grams of CaCO3 needs to be added per kg of soil.

To raise the base saturation, we need to add CaCO3 to the soil.

First, we need to calculate the amount of CaCO3 required. Since the base saturation is currently 45.45%, we want to increase it to the desired value.

Let's assume the desired base saturation is 60%.

To calculate the amount of CaCO3 needed, we can use the formula:
(amount of CaCO3 / CEC) x 100 = (desired base saturation - current base saturation)

(amount of CaCO3 / 55) x 100 = (60 - 45.45)
(amount of CaCO3 / 55) x 100 = 14.55

Cross-multiplying and solving for the amount of CaCO3:
(amount of CaCO3 / 55) = 14.55 / 100
amount of CaCO3 = (14.55 / 100) x 55
amount of CaCO3 = 8 g per kg of soil

Therefore, to raise the base saturation to 60%, approximately 8 grams of CaCO3 needs to be added per kg of soil.

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a) The CEC of the soil is 25 cmolc per kg

b) The base saturation of the soil is 60%.

c) 2.5 cmolc per kg of CaCO3 needs to be added to this soil to raise the base saturation to 70%.

Be;ow-

a. The CEC(Cation Exchange Capacity)  of the soil is 25 cmolc per kg.

To calculate the CEC (Cation Exchange Capacity) of the soil, we need to sum up the exchangeable cations. In this case, the sum of the exchangeable cations is:

Ca + Mg + K + Na + Al3+ = 6 + 4 + 3 + 2 + 10 = 25 cmolc per kg

Therefore, the CEC of the soil is 25 cmolc per kg.

b. The base saturation of the soil is 60%.

To calculate the base saturation, we need to divide the sum of the exchangeable base cations (Ca, Mg, K, Na) by the CEC, and then multiply by 100 to get a percentage. In this case, the calculation is:

(Base Cations / CEC) * 100
(Base Cations = Ca + Mg + K + Na)
(Base Cations / CEC) = (6 + 4 + 3 + 2) / 25 = 0.6
(Base Saturation) = (0.6) * 100 = 60%

Therefore, the base saturation of the soil is 60%.

c. 2.5 cmolc per kg of CaCO3 needs to be added to this soil to raise the base saturation to 70%.

To calculate the amount of CaCO3 needed to raise the base saturation, we need to find the difference between the desired base saturation and the current base saturation. In this case, let's assume we want to raise the base saturation to 70%.

The difference in base saturation is:

Desired Base Saturation - Current Base Saturation = 70% - 60% = 10%

To calculate the amount of CaCO3 needed, we divide the difference in base saturation by the base saturation of CaCO3, which is 100%. Then, we multiply by the CEC of the soil.

Amount of CaCO3 = (Difference in Base Saturation / Base Saturation of CaCO3) * CEC
Amount of CaCO3 = (10% / 100%) * 25 cmolc per kg = 0.1 * 25 cmolc per kg = 2.5 cmolc per kg

Therefore, 2.5 cmolc per kg of CaCO3 needs to be added to this soil to raise the base saturation to 70%.

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Answer:

the answer is B

Explanation:

the ice puts 8ts cold into the water taking it away from the ice

The formula of Hypolaryous acid wold depend on the valency of hydrogen and the valency of Laryine. The formula of  Hypolaryous acid will be HLy.

Hydrogen is an element in found in group 1 while Laryine is a halogen. Halogens are placed in group 17 while hydrogen is placed in group 1 for convenience.

Both hydrogen and Laryine have a valency of + 1. This implies that the compound formed by the two elements (Hypolaryous acid) will have the formula HLy.

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A BCC unit cell with a lattice constant, a, of 2.4 Å. The volume atomic concentration of the unit cell is 0.0722 atoms/ų.

To determine the volume atomic concentration of a Body-Centered Cubic (BCC) unit cell, we need to consider the number of atoms present in the unit cell and the volume occupied by the unit cell.

In a BCC unit cell, there is one atom located at the center of the cube and eight atoms at the corners, but each corner atom is shared among eight adjacent unit cells. Therefore, the total number of atoms present in the unit cell is 1.

The volume of a BCC unit cell can be calculated using the formula:

Volume = a³

where "a" is the lattice constant.

Given that the lattice constant, a, is 2.4 Å, we can calculate the volume of the unit cell as follows:

Volume = (2.4 Å)³

Converting the units to cubic angstroms:

Volume = 13.824 ų

Now, to determine the volume atomic concentration, we need to divide the number of atoms (1) by the volume of the unit cell:

Volume Atomic Concentration = Number of Atoms / Volume

Volume Atomic Concentration = 1 / 13.824 ų

The volume atomic concentration of the BCC unit cell is approximately 0.0722 atoms/ų.

Therefore, the volume atomic concentration of the unit cell in a BCC crystal with a lattice constant of 2.4 Šis approximately 0.0722 atoms/ų.

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The complete question is:

A BCC unit cell with a lattice constant, a, of 2.4 Å. Determine the volume atomic concentration of the unit cell.

475.021, f.s., refers to the Florida Statute (f.s.) for driver's license suspensions and revocations. This particular statute deals with the suspension of licenses for drivers who fail to pay court fines, costs, and fees.

The statute states that failure to pay the required court fees within 30 days will result in the suspension of the driver's license.

After 90 days, the suspension becomes permanent until the fees are paid. In summary, the mysterious glyph is trying to tell you about the legal statute in Florida regarding the suspension of driver's licenses for non-payment of court fees, fines, and costs.

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Answer:

12.47L

Explanation:

This question requires one to apply the ideal gas equation which is useful in questions that involve changes in P,VT and n, thus given any of the three variables we can calculate the fourth one using the equation.

Hope this helps

Answer:

kkkwkisa

Explanation:

wulaoaiq8qiIq8qiaik

We use different concentrations for sulfuric acid and sodium hydroxide because they have different properties and react differently with other substances.

Sulfuric acid is a strong acid and is highly reactive, while sodium hydroxide is a strong base and is also highly reactive. The concentration of a solution determines the amount of solute present in the solvent, and thus, affects the reactivity of the solution. The concentration of 3 M for sulfuric acid is sufficient for most applications, while 6 M concentration of sodium hydroxide is commonly used due to its strong alkaline nature and higher reactivity. Ultimately, the choice of concentration depends on the specific application and the desired outcome.

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Neil Bohr used the fluorescent screen and an alpha particle detector to study the structure of an atom.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

The atom as a whole is neutral and stable due to presence of oppositely charged particles.

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Answer:

kinectic energy of all its molecules

Answer:

just to get points

Explanation:

Answer: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Explanation: Hope this helps

We can reduce the risks and difficulties brought on by using less nonrenewable resources by adopting a comprehensive strategy for doing so.

Environmental Damage: Extraction, transportation, and burning of nonrenewable resources such as coal, oil, and gas can cause environmental damage such as air and water pollution, soil degradation, and climate change.

Price Volatility: The prices of nonrenewable resources can fluctuate greatly, making it difficult for businesses and consumers to plan and budget.

Energy Security: Dependence on nonrenewable resources can create energy security risks, as supplies can be disrupted due to geopolitical tensions or natural disasters.

Depletion: Nonrenewable resources are finite and can eventually be depleted, which can lead to economic and social challenges.

To limit our dependence on nonrenewable resources, we can take several steps, including:

Increasing Energy Efficiency: We can reduce our reliance on nonrenewable resources by improving energy efficiency in buildings, vehicles, and industry.

Developing Renewable Energy Sources: We can invest in renewable energy sources such as solar, wind, and hydro power to replace nonrenewable resources.

Encouraging Sustainable Practices: Governments can encourage sustainable practices such as recycling, reducing waste, and conserving resources.

Promoting Research and Development: We can invest in research and development of new technologies and solutions that reduce our dependence on nonrenewable resources and address associated problems.

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Answer:

15.6 g

Explanation:

Given that;

Mass of original sample = No = 500g

mass of sample remaining at 910 ms = N = ?

time taken to decay= 910 ms

Half life of Ca-37 = 181 milliseconds

From;

N/No = (1/2)^t/t1/2

N/500 = (1/2)^910/181

N/500 = (1/2)^5

N/500 = 1/32

32 N = 500

N = 500/32

N = 15.6 g

Answer:

The correct option is;

A. 0

Explanation:

The ammonia molecule has four pairs of electron whereby being located around the central nitrogen atom is tetrahedral in shape.

Of the four pairs of electrons, three are the bonds between nitrogen and hydrogen, such that there is only one lone pair of electron in the ammonia molecule that is located on the central nitrogen atom

The one electron on each hydrogen atoms and one of the electrons on the nitrogen atom form a bonding pair of electrons, that is the bonding pair of electrons are shared by the two nuclei, hydrogen and nitrogen

Since a lone pair are a pair of electrons attached to only one nucleus, the hydrogen in ammonia has no lone pair of electrons.

Answer:

d

Explanation:

Answer:

D

Explanation:

help me on my work please

In Science, went to atom slam together to form a heavier atom this phenomena is called fusion.

Went two atoms slam together to form a heavier item this process is called nuclear fusion in science.

When they are to unstable atoms they combine with each other in order to form a stable atom that is much more heavier.

In the process of recombination energy is released by the items which can be given by the mass energy equivalence,

E = ∆mc²

Where,

∆m is the change in mass during the recombination and c is the speed of light.

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The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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The spontaneity of a reaction is determined by the Gibbs free energy change (∆G), which is a measure of the system's ability to do work.

The equation that links ∆G, ∆H, and ∆S is: ∆G = ∆H - T∆S, where T is the temperature in Kelvin and ∆H and ∆S are the enthalpy and entropy changes, respectively. The signs of ∆H and ∆S determine whether the reaction is exothermic or endothermic and whether it is entropy-driven or enthalpy-driven, respectively.

If ∆G is negative, the reaction is spontaneous, meaning it occurs without the input of energy.The given reaction has a ∆H of 23.25 kJ and a ∆S of 161.26 J/mol∙K.

First, we need to convert the units of ∆S from J/mol∙K to kJ/mol∙K by dividing by 1000.∆S = 161.26 J/mol∙K ÷ 1000 = 0.16126 kJ/mol∙K Substitute the values into the equation to determine the spontaneity of the reaction:

∆G = ∆H - T∆S∆G = (23.25 kJ) - (298 K) x (0.16126 kJ/mol∙K)∆G = 23.25 kJ - 48.02 kJ∆G = -24.77 kJ Since ∆G is negative, the reaction is spontaneous.

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Answer:

A = 8

B = 8

C = Oxygen (O)

D = 26

E = 30

F = Iron (Fe)

Explanation:

protons    neutrons    atomic number    mass number     element

A               7                 B                           15                        C

D               E                 26                         56                       F

mass number = protons + neutrons

E = 56 - 26 = 30

A = 15 - 7 = 8

protons = atomic number

B = 8

D = 26

From atomic number:

C = Oxygen (O)

F = Iron (Fe)

Answer:

8

8

o

26

30

fe

Explanation:

edge 21

a. Silver coin - Element (Silver is a pure element and is not chemically combined with any other element in a silver coin)

b. Air - Mixture (Air is a mixture of gases, primarily nitrogen and oxygen, with trace amounts of other gases and particles)

c. Coffee - Mixture (Coffee is a mixture of various compounds such as water, caffeine, and organic compounds that give it its flavour and aroma)

d. Soil - Mixture (Soil is a mixture of various substances such as minerals, organic matter, water, and air)

My everyday experiences influenced my response because I have come across these examples in my daily life and have been taught about them in science classes. For example, I know that air is composed of different gases and particles, and that soil is made up of a mixture of substances, including minerals and organic matter. Similarly, I know that a silver coin is made of pure silver and that coffee is made of various compounds.

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They can be joined through a Peptide bond

The amino acids serve as the foundation for proteins. Water is produced when the amino acids are linked to form a lengthy chain of acids via amino and carboxyl. The main protein is made up of these long chain amino acids.

When the carboxyl group of one molecule combines with the amino group of the other molecule, a molecule of water is released, and a peptide bond is created between the two molecules (H2O). This condensation event, sometimes referred to as a dehydration synthesis reaction, typically takes place between amino acids.

The carboxyl group of one amino acid is joined to the amino group of another to produce a peptide bond, also known as a eupeptide bond. In essence, a peptide link is an amide-type covalent chemical bond.

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The chemical formula for aluminum oxide based on ionic bonding from valence electrons is Al₂O₃.

The chemical formula of a compound is a symbolic representation of its chemical composition.

Chemical formulae gives information about the elements that constitute the molecules of a compound and also about the ratio in which the atoms of these elements combine to form such molecules.

In this compound, aluminum (Al) donates three electrons to oxygen (O), resulting in the formation of Al³⁺ cations and O²⁻ anions. The ionic bond is formed between these oppositely charged ions, resulting in the formula Al₂O₃.

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