4. What is the frequency of light with a wavelength of 1.87 x 10-14 m?
a. Known values:
b. Equation:
c. Work:
d. Answer:

The process by which the ions are attracted to water and separate from each other when dissolved in water is called dissociation.

What is dissociation of ions in water?

The ionic salts when added to water dissolve in water by dissociation. The ions in the ionic compound break the bond between them and get dissolved in water. Water molecules reduce the electrostatic force between the ions and solvate them by surrounding them.

The positive ions of the ionic compound gets attracted to hydroxide ion of water which is negatively charged. The positive ion of the ionic compound gets attracted to protons in water which are positively charged. the ions in ionic compound dissolve by dissociation.

Therefore, due to dissociation the ionic compound dissolves in water and get attracted to opposite charges in water.

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The time taken to deposits one mole of silver if a current of 6 ampere is passed through the silver trioxonitrate solution is 16083 seconds or 283 minutes.

Electrolysis is the process of converting electrical energy into chemical energy.  If current is passed between two electrodes which are immerse in an electrolyte solution, the metal which is reduced will deposited at the cathode.

The weight of the deposited metal w related with its equivalent weight z, current I and time t is :

w = zIt /96500.

One mole of silver is 108 g. Its equivalent weight also be 108 g Thus the time t is calculated as follows:

108 g = 108 × 6 × t /96500

      t = 96500/6

        = 160835 seconds or 268 minutes.

Hence, the time taken to deposits one mole of silver in this electrolysis is 268 minutes.

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It appears that your answer contains either a link or inappropriate words. Please correct and submit again!

This is what it keeps saying when I want to answer so I have commented my answer below:

The relationship between the colors that we see with our eyes and the colors of light that the dye molecules absorb most strongly is because of its wavelength

When a molecule interact with light and energy is absorbed and the molecule is said to be excited and the transition occurs which take the molecule from an initial state to a higher energy state and if wavelength of light from a certain region of the spectrum are absorbed by a material then the material will appear to be the complementary color and if violet light with wavelength of 400nm is absorbed then the material will look yellow and if the material absorbs blue then the orange color are seen

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We can say that When K3PO4 is dissolved in water , the number of potassium ions present in the solution is three times the number of phosphate ions in the solution .

What are Ionic compounds ?

Ionic compounds can be defined as ionic bonds or chemical bonds formed by oppositely charged ions held together by electrostatic forces.

These are usually formed between metals and non-metals. Atoms always tend to acquire stable electronic configurations when atoms lose electrons to form cations, and anions are formed when atoms gain electrons. These two oppositely charged atoms together form an ionic bond, which is called an ionic bond.

Ionic compounds, also called ionic compounds, are held together by electrostatic forces. Ionic compounds are also formed when the electronegativity difference between two atoms is large. This causes one atom to attract more electrons than the other, resulting in electron loss and electron gain within the atom.

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Reaction Ni²⁺(aq) + 6NH₃(aq) ⇌ [Ni(NH₃)₆]²⁺ will experience a shift towards the products in equilibrium position when the concentration of Ni²⁺ is increased.

According to Le Chatelier's Principle: When the equilibrium is stressed, the response changes to relieve the stress. This means that adding a reactant moves the equilibrium away from the reactant to the right. Adding a product moves the equilibrium away from the product and to the left.

Equilibrium type:

As the concentration of Ni²⁺(aq) increases, the system attempts to reach equilibrium by reducing the increased coefficient according to Le Chatelier's principle. To do this, the concentration of Ni²⁺(aq) must be lowered. Therefore, it is necessary to lower the Ni²+(aq) concentration by promoting forward reaction.

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The given question was incomplete so the complete question is as follows:

Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of Ni2+ is increased? View Available Hint(s) Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of is increased?

Ni(OH)₂(s)⇌Ni²⁺(aq)+2OH⁻(aq)

[Ni(H2O)₆]²⁺(aq)+3En(aq)⇌[Ni(En)₃]²⁺(aq)+6NH₃(aq)

Ni²⁺(aq)+6NH₃(aq)⇌[Ni(NH₃)₆]²⁺

NiS(s)⇌Ni²⁺(aq)+S²⁻(aq)

Answer:  The alkali metals will lose an electron to resemble the next lowest noble gas; thus, all the alkali metals form +1 ions. K loses an electron so that it will have the same electron configuration as Ne.

1A or group 1

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The electron configuration of alkali metals would then resemble those of group 17 of the periodic table in the compounds they form.

Periodic table is defined as a tabular approach of showing the items so that they appear in the same vertical column or group when their attributes are similar. Phosphorus is the oldest chemical element, and hassium is the newest. Please take note that, unlike in the Periodic system, the elements do not exhibit their natural relationships with one another.

The elements that make up group 17 of the periodic table are the halogens. They are nonmetals that are reactive, such as iodine, bromine, chlorine, and fluorine. Halogens are non-metals that are very reactive. These substances share a lot of characteristics with one another.

Thus, the electron configuration of alkali metals would then resemble those of group 17 of the periodic table in the compounds they form.

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The sum of the coefficients involved in the equilibrium reaction equation is 5.

the equilibrium reaction equation is A chemical reaction is said to be balanced when the number of atoms of an element on the reactant side is equal to the number of atoms on the product side. You can check this by doing an atomic count.

When trying to solve this problem, the first step that must be taken is to obtain a balanced reaction equation. Because that's the key to what we're trying to get here. Now you can see the balanced reaction equation for the reaction and then get the total.

[tex]Pb(NO3)_2 + H_2S = > 2 HNO_3 + PbS[/tex]

The sum of the coefficients of the equilibrium reaction equation is 1+1+2+1=5.

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Atom pairs that are most likely to form an ionic bond is sodium and oxygen.

Thus, the correct option is C.

А pаir of elements will most likely form аn ionic bond if one is а metаl аnd one is а nonmetаl. These types of ionic compounds аre composed of monаtomic cаtions аnd аnions. We cаn check the periodic tаble to see thаt the cаtions аre monаtomic ions formed from metаls, аnd the аnions аre monаtomic ions formed from nonmetаls.

Sodium is a metal, and oxygen is a nonmetal; therefore, [tex]N_{2} O[/tex] is expected to be ionic.

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Explanation:

permutit is an artificial zeolite chemically it is

hydrated sodium aluminum orthosilicate with the formula

Na2AI2Si208. XH20

Mo Iron's polarity is calculated. Hydroxide. Thus, we must translate this into moles. One additional F b o H 30 H will get you to Surrey. Over 2.80 L, the molar mass was 5.8 grams.

Working out at 1.40 times 10 to the minus 52.80 times 10 to the minus five. I'll get either 1.1 or 1.1.10 multiplied by 10 to the negative 14. Put the KSP value into action.

A diatomic anion with the chemical formula OH is hydrogen oxide. It has a negative electric charge and is made up of two atoms of oxygen and hydrogen that are bound together by a single covalent bond. It is a crucial yet typically insignificant component of water. It serves as a base, ligand, nucleophile, catalyst, and nucleophile.

If the pOH of the solution is known, it is possible to determine the hydroxide ion concentration in an aqueous solution, [OH-], in mol L-1. The amount of hydroxide ions in the solution decreases as the pOH rises. The amount of hydroxide ions in the solution rises as the pOH drops.

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a) the Dutch process at the molecular level Pyrol and benzyl alcohol do not react with NaOH.

b) The molecules are ranked from those that are least likely to be present after the Dutch process to those that are most likely to be present after the Dutch procedure Pyrrol is more likely to be present than butyric acid, which has a lower likelihood of being there.

c) Butyric acid's carboxylic acid is removed using NaOH.

The acidic chemicals with a bitter taste are washed in the Dutch procedure using a strong base like NaOH. Basic substances are not cleansed and only very acidic substances are washed thoroughly. However, vanillin is only somewhat acidic, thiophenol is less acidic, butyric acid is acidic, benzyl alcohol is neutral, and pyrrol is basic.

a) Benzyl alcohol and pyrrol do not react with NaOH. However, butyric acid combines with it to produce sodium butyrate (CH₃CH₂CH₂COONa), vanillin creates its sodium salt ((2-OCH₃,4-CHO)C₆H₃ONa), and thiophenol creates sodium benzenethiolate (C₆H₅SNa).

b) Butyric acid is least likely to be present and pyrrol is most likely to be present. Butyric acid is followed in increasing order of presence by vanillin, thiophenol, benzyl alcohol, and pyrrole.

c). NaOH is used to wash away the carboxylic acid in butyric acid. Due to the aromatic ring, vanillin and thiophenol are acidic and combine with NaOH to generate a sodium salt that is water soluble. Because it is neutral and pyrrole is basic, neither benzyl alcohol nor pyrrole will react with NaOH.

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The SN2 reaction proceeds most quickly for primary carbons and there's less steric congestion for all of this backside assault.

Secondary as well as tertiary alkyl halides undergo the SN2 reaction more slowly than primary alkyl halides. Since there were only three little hydrogen atoms present, methyl halides interact in SN2 reactions the fastest among the simple alkyl halides.

Due to the fact that tertiary carbocations comprise three alkyl groups and secondary carbocations only have two, the former is more stable. Based on the inductive effect, tertiary carbocation is therefore more stable that secondary carbocation.

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Bases that are useful for deprotonating compounds are:

NaHCO₃ or NaOH.

metal alkoxide

Sodium hydroxide

Benzene rings with carboxylic acids that are weak acids can be prepared using NaOH or NaHCO 3 due to the weakness of the carboxylic acid. deprotonated.

Metal alkoxides such as potassium tert-butoxide can be used to deprotonate benzene rings with three carbon chains attached to one carbon. Also, metal alkoxides are used because the benzene ring containing the hydroxyl group is a very weak acid.

A benzene ring with a hydroxyl group is a weak acid like a benzene ring with a carboxyl group, so it can be deprotonated with NaOH.

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If the relative molecular mass of CH₂O is 60, the molecular formula of the compound would be  [tex]C_3 H_6O_3[/tex].

The empirical formula of a compound is the formula based on the simplest whole number ratio of the component atoms. The molecular formula could be in multiples of the empirical formula.

The empirical and the molecular formulas of a compound are related by the following equation:

[empirical formula]n = molecular formula

Where n = molecular formula mass/empirical formula mass

In this case, the relative molecular mass is 60. The empirical formula mass can be calculated as:

CH₂O = (12) + (2x1) + (16)

          = 40 g/mol

Thus:

n = 60/40

 = 1.5

Therefore, the molecular formula would be: [CH₂O]1.5 which is equivalent to [tex]C_3 H_6O_3[/tex]. This is because atoms combine in simple whole number ratios.

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Considering the Dalton's partial pressure, the the total pressure of the Heliox mixture is 1.1 atm.

Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

[tex]P_{T}[/tex]= P₁ +P₂ + ... + Pₙ

where n is the amount of gases present in the mixture.

This relationship is due to the assumption that there are no attractive forces between the gases.

In this case, the total pressure of the Heliox mixture is calculated as:

[tex]P_{T} =P_{He} +P_{O_{2} }[/tex]

Being:

the total pressure of the Heliox mixture is

[tex]P_{T}[/tex]= 0.75 atm + 0.35 atm

[tex]P_{T}[/tex]= 1.1 atm

Finally, the total pressure is 1.1 atm.

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The number of moles of beryllium oxide BeO are 2.228 moles.

The chemical formula for beryllium oxide is given to be BeO.

The mass of the amount of beryllium oxide formed is 555.7 grams.

we are asked to find the number of moles,

The moles are given by the mass of the substance divided by the molar mass of the substance.

Mass = Mass formed/molar mass

Mass of BeO formed = 55.7 grams.

Molar mass of BeO = 25g/mol.

Putting values,

Moles of BeO = 55.7/25

Moles of BeO = 2.228 moles.

So, the number of moles of beryllium oxide formed are 2.228 moles.

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Complete question - the chemical formula for beryllium oxide is BeO. A chemist measured the amount of beryllium oxide produced during an experiment. she finds that 55.7 grams of beryllium oxide is produced. calculate the number of moles of beryllium oxide produced. be sure your answer has the correct number of significant digits.

The amount of Si needed to react with an excess of nitrogen gas to prepare 125g of silicon nitride if the percent yield of the reaction is 95% is 88.20 g.

We know that,

Percentage (%) yield = ( actual yield /theoretical yield ) × 100

Using this we can derive that,

Theoretical yield = (Actual yield / Percentage(%) yield) × 100

= (125 / 85) × 100 = 147.06g Si₃N₄

The mole ratio of Si: Si₃N₄ = 3 :1

Grams of Si required to produce 147.06 g  Si₃N₄,

= ( 3 mole Si /1 mol Si₃N₄) ( 28.05 g Si /1 mole Si) * (1 mole Si₃N₄, /140.3 g Si₃N₄,) *147.06 g Si₃N₄

=  88.20 g Si

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You take in that you need to make a decision. Try to notice and define the nature of the decision you must make. This first step is very important.

Decision-making requires the identification and selection of alternatives on the basis of values, linking, requirements, and beliefs. To begin the procedure objectives must be defined, classified, and ordered in the order of their importance. Decision-making involves the recognition and selection of alternatives on the basis of values, preferences, concerns, and beliefs.  Decision-making means selecting a course of action from two or more alternative strategic decision-making (SOM) is of great and growing importance.

So we can conclude that attribute of Decision Making · It is a process of selecting a course of action from among the alternative courses of action.

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The type of protein molecules that is been used to digest food in  the organism are:  

The organelle where energy from nutrients is released is the Mitochondria.

One  inference that can be made concerning a cell that has many of these organelles is that te utilization of the energy is balanced.

The  organelle where energy from nutrients is released is the Mitochondria , this organelles can be described as the one that look tiny  inside cells  and this is very essential in the cell because it helps in the p[roces of releasing energy from food.

It should be noted that this process is been refferd to as process of cellular respiration and this is the reason why the biologist do referred to  mitochondria as the powerhouses of the cell because it involves the use of energy.

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7.133 is the rate constant increase if the temperature is raised to 37c.

factor=rate(T2)/rate(T1) .

The proportionality constant (k) that links the pace of the reaction to the concentrations of reactants is known as the specific rate constant. For any chemical reaction, the rate law and the particular rate constant must be ascertained through experimentation. Temperature affects the rate constant's value.a chemical reaction in which two or more substances interact and change into new ones, or where one substance transforms into another.

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In an ecosystem, the effect of the chemical industry  which is a positive one is advancements in medicine.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Salts get dissolved in water because it has partial positive and negative charges. So option (c) is correct.

The water molecules pull the Na and Cl ions apart while breaking the ionic bond which held them together. After the salt ions are pulled apart, they get surrounded by water molecules. The salt dissolves to form a homogeneous solution.

Salts are ionic and are expected to dissolve in water because water itself is polar. Therefore, ionic salts are expected to dissolve in polar solvents.

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Cr is the limiting reagent & the amount of Cr2N3 produced depends on the limiting reagent.

2 mol of Cr produces 146g of Cr2N3

1 mol ———————- 146/2g of Cr2N3

4.5 mol ——————- 146 x 4.5/2g of Cr2N3

=328.5g of Cr2N3

What is a Limiting Reagent?

Thus, 328.5 g of cr2n3 can be formed.

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Chemicals that change behavior or mood by directly affecting activity of the postsynaptic cell are referred to as neurotransmitter

In a chemical synapse the postsynaptic membrane is the membrane that receives a signal from the presynaptic cell and respond via depolarization or hyperpolarization and neurotransmitter play an important role in neural communication and they are chemical messengers that carry massages between nerve cell and other cell in your body and influencing everything from mood to involuntary movements and monoamine neurotransmitter such as dopamine are the most important neurotransmitter in the pathophysiology of mood disorders

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The picture shows the balancing of chemical equations. The balanced chemical equation of the reaction is:

Balanced chemical equations are equations in which the number of moles of atoms of elements that are reacting is equal to the number of moles of atoms of the elements that are produced.

The balancing of chemical reactions follows the law of conservation of mass which states that matter cannot be created nor destroyed but can change from one form to another.

Hence, in a balanced chemical equation, the mass of the reactants is equal to the sum of the mass of the products.

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This cycle is known as Glycolysis

Glycolysis is the 10 step process, which occurs in cytoplasm of cell and  is conversion of glucose to pyruvate.

There are several steps and enzymes that is required in glycolysis pathway.

STEP 1: PHOSPHORYLATION

This is irreversible reaction.

Here glucose is phosphorylated to glucose 6 phosphate with the help of enzyme hexokinase and 1 ATP is utilized.

STEP 2 : ISOMERISATION

The isomerization of Glucose-6-phosphate to Fructose-6-phosphate, done with the help of enzyme phosphoglucoisomerase.

STEP 3 : SECOND PHOSPHORYLATION

Fructose-1,6-bisphosphate is phosphorylated to Fructose 1,6 bisphosphate  which is catalyzed by  phosphofructokinase and cost another ATP.

STEP 4: BREAKDOWN

The fructose-1,6 bisphosphate  is breaken down too produce two 3carbon molecules -  Glyceraldehyde-3-phosphate, or GADP, and a molecule of Dihydroxyacetone phosphate or DHAP.

The reaction is catalyzed by aldolase.

STEP 5 : CONVERSION OF DHAP INTO GADP

DHAP is oxidized to form GADP.

The reaction is catalyzed by triose phosphate isomerase enzyme.

STEP 6: OXIDATION

Here 2 mol. of GADP are oxidized.The GDAP is converted to 1,3 bisphosphoglycerate with the help of  glyceraldehyde phosphate dehydrogenase. This requires NAD+ and a free phosphate.

STEP 7: DEPHOSPHORYLATION

First substrate level phosphorylation ( addition of phosphate to ADP to give ATP )

1,3 bisphosphoglycerate with the help of Phosphoglycerate kinase become 3-phosphoglycerate and will produce 1 ATP.

STEP 8: PHOSPHATE TRANSFER

The phosphate ester linkage in 3 phosphoglycerate is moved from 3 C to 2 , because of low free energy to form 2 phosphoglycerate  with the help of phosphoglycerate mutase .

STEP 9: DEHYDRATION

2 phopshoglycerate is dehydrated by enolase to form Phosphoenolpyruvate ( PEP)

This is reversible reaction.

STEP 10: SECOND DEPHOSPHORYLATION

2 substrate level phosphorylation which gives out ATP.

Non - oxidative phosphorylation.

Here Phosphoenolpyruvate ( PEP) is converted to last product of glycolysis pyruvate releasing ATP by pyruvate kinase.

The first five step is production of GADP, And usage of ATP and the next five steps are the formation of ATP and pyruvate. The net formation of ATP is 2 mol. of ATP and 2 mol. of NADH.  This pyruvate then move to the TCA cycle.

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Answer: True

Explanation: The value of the equilibrium constant indicates whether or not a reaction is favorable. Reactions for which Keq is greater than one are favorable, meaning that the reactants are higher in energy than the products and signifying that energy is released as the reaction proceeds.