write the balanced molecular chemical equation for the reaction in aqueous solution for sodium hydroxide and tin(iv) acetate. if no reaction occurs, simply write only nr. be sure to include the proper phases for all species within the reaction.

For the reaction of H₃PO₄(aq) Ca(OH)₂(aq), the formula for the salt formed is Ca(HPO₄).

When a reaction occurs between acid and a base, neutralization reaction takes place to form salt. In such reaction sometimes the replacement of the hydrogens in the acid by the cation of the base is complete, and sometimes there is a partial replacement ,as in the above case. In this reaction, the cation of the base is Ca²⁺ and it will react with the anion  HPO⁴⁻ of the acid.

H₃PO₄ + Ca(OH)₂ → Ca(HPO₄) + 2H₂O

As you can see, water is also formed as a product of the reaction.

From the formula the salt formed is Ca(HPO₄).

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Ans1. The left electrode will be positive because electrons in a concentration cell travel from lower to higher concentration. As a result, the right electrode will operate as an anode and will be negative.

The left one will serve as the cathode and will be positive.

Ans2: For the Concentration Cell,

Ecell = frac-0.05911, log frac0.22. (Because it only involves one electron)

= +0.059 V

~ 60 mV.

An electrode is a conductor that makes electrical contact with the nonmetallic components of a circuit. Electrodes are commonly used in electrochemical cells, semiconductors such as diodes, and medical devices (see Figure 1). Electrons are transferred at the electrode.

Percentage of concentration: This is the amount of solute that dissolves in 100 g of solvent. If the concentration of a solution is 20%, we know that there are 20 g of solute in it.

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We can see that 2 moles of The no react with 1 mole of O2 using this equation. 4.8 L NO x 1 L O2 / 2 L NO = 2.4 L of O2 are needed at constant pressure and temperature.

What is an example of pressure?

One can see a simple illustration of pressure by using a knife against a few fruit. If you press the flat side of the knife against the fruit, the top won't be cut. The force is spread more than a wide area (low pressure).

What are different types of pressure?

The physical pressure exerted to an object is referred to as pressure. Per unit area, a parallel force is applied to the surface of the objects. F/A (Force per Area) is the basic formula for pressure.

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The answer is

1. Glycolysis produces pyruvate.

2. Pyruvate dehydrogenase catalyzes the oxidation of pyruvate kinase

3. Decarboxylation of pyruvate to yield carbon dioxide and acetyl CoA.

4. Acetyl CoA is the main form in which carbon compounds enter the

citric acid cycle.

What is Glycolysis?

Glycolysis is the process in which glucose is broken down to produce energy. It produces two molecules of pyruvate, ATP, NADH, and water. The process takes place in the cytoplasm of a cell and does not require oxygen. It occurs in both aerobic and anaerobic organisms.

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Answer:

1.84x10^-4 moles of cyanocobalamin

Explanation:

The challenge here is to find the molar mass of cyanocobalamin.  The molecule has the chemical formula of:

C63H88CoN14O14P

Molar mass is calculated by adding the atomic masses of each atom in the compound.  (e.g., 63 carbons at 12 each, etc.).  The molar mass is found to be 1355.4 g/mole.

1355.4 grams of cyanocobalamin will contain 1 mole, or 6.02x10^23 molecules of cyanocobalamin.  But we only have 250 mg, or 0.250 grams of the compound.  Use the molar mass as a conversion factor by dividing the mass by the molar mass:

(0.250 g)/(1355.4 g/mole) = 1.84x10^-4 moles

The grams cancel and the moles moves to the top, leaving only moles cyanocobalamin.  While 1.84x10^-4 moles of cyanocobalamin doesn't sound like much, it represents:

(1.84x10^-4 moles)*(6.02x10^23 molecules/mole) = 1.11x10^20 molecules of cyanocobalamin

In this experiment, both the substrate concentration and varying the enzyme concentration would have an impact on the enzyme activity, although at different rates.

Concentration of the enzyme: If there is a substrate available for the enzyme to bind to, then increasing the enzyme concentration will speed up the reaction. When all of the substrate has been incorporated, the reaction will no longer accelerate because there won't be any more substrate for new enzymes to attach to. Specifically, enzymes. Normally, just one or a few substrates can trigger an enzyme's reaction. Only one type of substrate will be accepted by some enzymes, which are more selective than others. Other enzymes can interact with a variety of molecules as long as they possess the chemical group or type of bond that the enzyme is looking for.

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Answer:

4) Neon and Argon

Explanation:

Sodium has 11 electrons, Chlorine has 17.

For both of them to complete their shells Sodium will give one electron to chlorine.

Sodium will become 2,8 in the reaction.

Chlorine will become 2,8,8 in the reaction.

2,8 is the electron configuration of Neon.

2,8,8 is the electron configuration of Argon

we designed an electrochemically addressable system, based on a conducting terpolymers [P(EDOT-co-EDOTSAc-co-EDOTEG)] coated onto a carbon cloth substrate, to selectively capture and release biological entities using a simple electrochemical redox process.

Terpolymers are utilized to create porous scaffolds with biodegradable shape memory and to cover wires and cables. Terpolymers may undergo electron beam cross-linking to increase their strength while lowering their softening temperature.

Redox reactions are those in which both oxidation and reduction happen. Redox reactions include displacement processes where one species is oxidized (loses electrons) while the other is reduced (gaining electrons).

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The activation energy of a reaction is 180 kJ/mol. Which of the following rates would you expect if the reaction was completed at 100, 200, 300, or 400 oc...

How do you calculate a reaction's activation energy?

Activation energy calculation:

Using the Arrhenius Equation to calculate the rate constant k at various temperatures.

A reaction's activation energy can be calculated.

The activation energy can be calculated using the equation: ln (k 2 / k 1) = E a / R (1 / T 1 - 1 / T 2).

How do you calculate kJ mol activation energy?

Problem with Activation Energy

Convert temperatures from degrees Celsius to Kelvin in Step 1. T = 273.15 + degrees Celsius T1 = 3 + 273.15. ...

Step 2 - Locate

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276K is the temperature in Kelvin of an 11.2-L sample of carbon monoxide, CO, at 744 torrs if it occupies 13.3 L at 55 ⁰C and 744 torrs

It is given that the volume of Carbon monoxide is 1.2L and its pressure is 744torr.

We need to find its temperature if it occupies 13.3L at 55⁰C or (55+273 = 328K) at 744torrs.

For this, we need to use Charle's law which is given by,

V₁/V₂ = T₁/T₂

On rearranging the formula we get,

T₂ = T₁V₂/V₁

On substituting the values to the formula we get,

T₂ = 328x13.3/11.2

T₂ = 24.661/11.2

T₂ = 276K          

Therefore, the temperature in Kelvin is 276K.

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The oxidation state of an element is an indicator of the total number of electrons that have been removed from the atom. The oxidation state of a)HIO₂ is +3, meaning that three electrons have been removed from the atom.

The oxidation state of an atom is determined by the oxidation number of its constituent elements. In the case of HIO₂, the oxidation number of each atom is determined by the sum of the number of valence electrons and the charge of the ion. The oxidation number of hydrogen is +1, the oxidation number of oxygen is -2 and the oxidation number of iodine is +7. When these values are added together, the oxidation number of HIO₂ is +3.

Oxidation states can be useful in predicting the stability of a compound and the reactivity of the atoms within it. In this case, the oxidation state of HIO₂ indicates that it is relatively stable, as the total oxidation number for the molecule is positive. The positive oxidation state also indicates that HIO₂ is likely to be fairly unreactive, as the electrons in the molecule are already well-bonded and not likely to be easily transferred.

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Do not add or delete any bonds or atoms. H3C - O - O - CH -HCOCH2.

The electron is a subatomic particle with a poor primary electric-powered fee. Electrons belong to the first generation of the lepton particle family and are generally conceived to be simple debris due to the fact they haven't any acknowledged additives or substructure.

Electrons are negatively charged particles that orbit across the outside of the nucleus. They spin so rapidly that it could be difficult for scientists to examine them. they're drawn to the fine rate of the protons and are the smallest debris in an atom - you could match 2000 of them into a proton.

Electrons are the smallest of the debris that makes up an atom, and they create a bad charge. The number of protons and electrons is the same in a neutral atom. The hydrogen atom, for example, has simply one electron and one proton.

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If your titration results in a magenta color, what is the limiting reactant is the acid and the excess reactant at that point is the base.

Assuming that the titration is between an acid and a base, the color change from the indicator will occur when the pH changes from acidic to neutral. At this point, the reaction is said to have reached its endpoint.

The limiting reactant is the reactant that is consumed first and is in the lowest concentration relative to the other reactant. In this case, it is the acid. Since the acid has been completely consumed, the other reactant (base) is the excess reactant.

In simple terms, the limiting reactant is the one that runs out first and the excess reactant is the one that is left over after the reaction has ended. When the endpoint of the titration is reached, the magenta color indicates that the acid has been completely consumed and the base is the excess reactant.

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1. Electricity gain. The energy released when an atom accepts an electron is measured by enthalpy.

Thus, the first one is false as stated. The amount of energy released when an atom receives an electron is measured as electronegativity.

2. The ability of a boned atom to attract other atoms is known as electronegativity.

Because it mentioned an attractive force between two electrons in the same orbital, the second one is equally wrong.

3. Ionization. The energy needed to extract an electron from an atom is measured by enthalpy.

As a result, the third one is also inaccurate. The amount of energy needed to remove an electron from an atom is measured as electronegativity.

4. Electronegativity is a measurement of the strength of the attraction of electrons in a covalent bond to an atom.

It is accurate because covalent bonds can have polar or nonpolar atoms and still exhibit electronegativity.

5. Electronegativity is a characteristic that indicates whether a bond is polar or non-polar.

Since electronegativities between atoms can be used to predict whether a bond between them is polar or nonpolar, the fifth option is true.

6. Electronegativity falls from top to bottom as atom size increases and bonding electrons move farther from the nucleus. Electronegativity increases when travelling from left to right as well, but given this, it should be decreasing to the right side, which is erroneous.

Because electronegativity rises from left to right and falls from top to bottom, this is false.

So, The statement 1, 2, 3, 6 are incorrect and statement 4 &4 are correct.

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Answer:

0.17 J/g*C

Explanation:

Specific heat capacity will have units of heat per unit mass, per degree temperature.  Using the units provided here, we would expect to find a specific heat expressed as J/(g*C).  This can be read as the energy required to raise 1 gram of the material 1 degree C.  Or it can be read as the amount of energy that needs to be removed to reduce the temperature of 1 gram of material by 1 degree C.

We are given the three values needed to determine specific heat capacity.  Just piut them together in a manner that will result in the correct unit:  J/(g*C).

160 J released

5.0 g metal

A temperature change of (225-35) or 190C.

We want J/(g*C)

  160J/(5.0g*190C) = 0.1684 J/g*C or 0.17 J/g*C for 2 sig figs

The order of increasing strength of intermolecular forces of the following compounds is F2 < CO2 < NH2CH3.

Describe intermolecular forces.

The term “Intermolecular forces” is utilized to describe the forces of attraction between atoms, molecules, and ions when they are placed close to one another.

Explanation:

Strongest due to the hydrogen bonds is NH2CH3 (other bonds are present but the Hydrogen bonds are key as it has the strongest attraction)

Due to Dipole-Dipole attraction and London dispersion, CO2 is the second-strongest gas.

Only dispersion forces seem to be at effect because F2 is the weakest and nonpolar.

Therefore, the order of increasing strength of intermolecular forces of the following compounds is F2 < CO2 < NH2CH3.

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Well here I can't draw the diagram of the neutral form of the nitrogen-containing molecule formed upon the acid-catalyzed hydrolysis of acetanilide in 6 M hydrochloric acid at reflux.

The odorless solid chemical of leaf or flake-like appearance is known as acetanilide and it is also called as  N-phenyl acetamide or acetanil.

A hydrolysis process in which the cleavage of a chemical bond is  catalyzed by protic acid  via a nucleophilic substitution reaction is referred to Acid-catalyzed hydrolysis.

It is usually used in the conversion of starch or cellulose → glucose.

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4.84 grams of NaCl must be combined with water to prepare 510 ml of a 0.95% (m/v) physiological saline solution.                                                                    

The ratio of the mass of the solute present in a solution to the volume of the solution as a whole is known as the mass/volume percent.

The given proportion must be multiplied by 100 because this sort of concentration is expressed as a percentage.

Let number of grams of NaCl  combined with water to prepare 510 ml be x grams.

The mass/ volume percent of this solution ⇒ x/510 *100 = 0.95

⇒ x= 0.95*510 / 100

⇒ x= 4.84 grams

Therefore, 4.84 grams of NaCl must be combined with water to prepare 510 ml of a 0.95% (m/v) physiological saline solution.

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True. The outer orbitals of a halogen are further from the nucleus and are thereby more polarizable.

What is a Halogen?

A halogen is a type of element found on the periodic table that belongs to the halogen group (Group 17). Halogens are nonmetallic elements that have seven valence electrons and react with other elements to form compounds. They are highly reactive and can combine with other elements to form compounds, such as salts, acids, and oxides. Halogens are important in industry and are used to make a wide variety of products, including plastics, pharmaceuticals, and insecticides.

A halogen's outer orbitals are further away from the nucleus, making them more polarizable due to their greater distance from the positively charged nucleus. Because of the greater distance, the orbitals are more susceptible to being pulled by the opposite charges of other molecules, allowing for greater polarizability.

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Primary alcohols react using the SN2 mechanism, whereas secondary and tertiary alcohols react using the elementary SN1 process, where no carbocation is produced.

The carbon atoms attached to OH can be used to identify the kind of alcohol.According on how many other carbons are linked to that carbon, the alcohol is categorized as primary, secondary, or tertiary.

Tertiary alcohols' alkyl groups provide electron density to the alcohol's oxygen, which reduces the alcohol's acidity.When a result, the acidity of alcohol reduces as more alkyl groups are connected to an alcohol functional group on carbon.

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The missing component = H₂O

Given reactions are;

First reaction => displacement reaction

Second reaction => production of MgO and hydrogen gas.

1. The missing component is Cl₂.

2. The missing component is H₂O.

Reasons:

1. The given reaction can be represented as follows;

? + 2NaBr  2NaCl + Br₂

The above reaction has both 2 Na and 2 Br on the side of the reactants, and 2 Na, 2 Br, and 2 Cl on the side of the products.  Here the missing component is Cl₂

2. The possible given reaction is presented as follows;

    Mg + ? HBr  MgO + H₂

The elements in the reactant side of the reaction are 1 Mg and unknown element (?)The elements in the product side are one Mg one O and  two H .Therefore the the missing elements in the reactants are, 2 H and 1 O, which gives the missing component = H₂O.

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We need to add 400 ml of the 40% solution.

What is concentration?

Being focused in some way. attention being focused on a single thing, in particular. I can't concentrate with all that noise around me. a concentration or major within an academic discipline.

What is volume?

A three-dimensional space's actual size when a closed surface encloses it. Take the area or shape that a substance, such as a solid, liquid, gas, or plasma, occupies as an example. The cubic meter, a S.I.-derived unit, is also frequently used to represent volume numerically.

We take the amount times the percent concentration and add what we mix to get the final concentration

We need the final mixture to be 30% and we have 200 +x milliliter added together so that will be the amount in the container

200 * 10 % + x* 40 % = (200+x) *30%

Change the percent to decimal form

200 * .10  + x* .40  = (200+x) *.30

Distribute the .30

20 + .4x = 60+.3x

Subtract .3x from each side

20 + .4x-.3x = 60+.3x-.3x

20 +.1x = 60

Subtract 20 from each side

20-20 +.1x = 60-20

.1x = 40

Divide by .1

.1x/.1 = 40/.1

x=400

Therefore, We need to add 400 ml of the 40% solution

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As a result, 7.93 moles of C5H12 will react with extra oxygen to become 39.65 moles (7.93*5).

Chemical elements, like oxygen, are compounds that only have one type of atom. An oxygen atom has eight protons in its nucleus since it has an atomic number of eight and is represented by the chemical symbol O.

95% or more oxygen is considered to be a normal level. 90% of patients with sleep apnea or chronic lung illness may have normal levels. The "SpO2" value on a pulse oximeter displays the blood's oxygen content as a percentage. Call your healthcare practitioner if the SpO2 level you take at home is less than 95%.

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These amino acids make it possible for an enzyme's active site to specifically bind to its substrate or substrates and facilitate chemical reactions.

A protein is made up of a lengthy chain of amino acids that are connected by peptide bonds. A water molecule is removed during a biological process that links the carboxyl group of one amino acid to the amino group of a nearby amino acid to generate peptide bonds.

Substances (such as ions, glucose, and amino acids) move across a membrane during active transport from an area of lower concentration to a region of higher concentration. They travel in the opposite direction of their concentration gradient as a result.

With the aid of symporter proteins found in the plasma membrane, amino acids are diffused across the membrane by facilitated diffusion. Sodium-dependent amino acid transporters is another name for them.

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The heat capacity, in calories per degree, of 28.4 g of lead is 3.67  j/g °c.

Heat capacity or thermal capability is a physical property relying on, described as the amount of heat to be provided to an object to produce a unit trade in its temperature. The SI unit of heat ability is joule in line with kelvin. warmth capability is an extensive belonging.

Calculation:-

Heat capacity = m × specific heat capacity

                        =  28.4 g × 0.129 j/g °c

                        = 3.67  j/g °c

Heat capacity or specific warmth is the quantity of warmth in step with unit mass that is required to raise the temperature through 1°C. particular heat is helpful in determining the processing temperatures and quantity of warmth necessary for processing and can be useful in differentiating among polymeric composites.

The Specific heat ability of a substance is usually determined consistent with the definition; namely, by means of measuring the heating capacity of a sample of the substance, generally with a calorimeter, and dividing via the pattern's mass .

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A chemical bond is an attraction between atoms and ions that holds them to form new molecules or crystals. The bond between one species and another differs in strength and length.

In NO bonds, the more oxygens it contains the more spread out their electron density. The more oxygen atoms cause the bond order to decrease, resulting in this conclusion: the higher the bond order, the stronger and the shorter the bond. NO₃⁻ contains more oxygen, thus it has the longest and the weakest N-O bond.

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The temperature of N2 will be -217.6 C.

Define molar mass:

A chemical compound's mass M is equal to its amount of substance, expressed in moles, multiplied by its mass.

By definition:

Vrms = sqrt ( 3RT/M)

Here R is the gas constant

Given:

N2 and SF6 have the same root mean square velocity

so

Tn2 / Mn2 = Tsf6 / Msf6

Given:

Tsf6 = 16 C = 22 + 273 K = 289 K

Msf6 = 146.06 g/mol

Mn2 = 28 g/mol

Tn2 = ??

Now,

Tn2 / 28 = 289 K / 146.06

Tn2 = 55.40 K

Tn2 = 55.40 - 273 C

Tn2 = -217.6 C

Therefore, the temperature of N2 will be -217.6 C.

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The unbalanced oxidation half-reaction is represented below:

[tex]Mn^{2+}(aq)-- > MnO2(s)[/tex]

Balancing O in the aqueous medium, we get:

[tex]Mn^{2+}(aq)+2H_{2}O(l)-- > MnO_{2}(s)[/tex]

Balancing H in an acidic medium, we get:

[tex]Mn^{2+}(aq)+2H_{2}O(l)-- > MnO_{2}(s)+4H^{+}(aq)[/tex]

Balancing charge, we get:

[tex]Mn^{2+}(aq)+2H_{2}O(l)-- > MnO_{2}(s)+4H^{+}(aq)+2^{e-}[/tex]

So, the balanced oxidation half-reaction is represented below:

[tex]Mn^{2+}(aq)+2H_{2}O(l)-- > MnO_{2}(s)+4H^{+}(aq)+2^{e-}[/tex]

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There is huge difference in ionisation energy between IE4 and IE5. This means, lots of energy are required to remove 5th electron. So, after 4 electrons are removed, the element has acquired noble gas configuration,. So, ether are 4 valence electrons in the element.

The element in period 2 with 4 valence electrons is Carbon

Answer: C

Chemically, carbon is an element with the symbol C and atomic number 6. Carbon, which is categorized as a nonmetal, is a solid at ambient temperature. Unattached or attached to an atom, an electron is a negatively charged subatomic particle (not bound). One of the three main types of particles inside an atom, along with protons and neutrons, is an electron that is linked to the atom.

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The correct sequence of steps for the preparation of a pure sample of copper(II) sulfate crystals from copper(II) oxide and sulfuric acid is dissolving → evaporation filtration → crystallization.

what is crystallization?

When atoms or molecules are tightly ordered into a structure known as a crystal, a solid is said to have crystallized.

Explanation:

The crystalline form is the most pure form of any material, hence any extraction that yields the component in this form is a pure sample.

The following methods will result in copper(II) sulfate crystals from copper(II) oxide and sulfuric acid:

First, we warm in a water bath after adding sulfuric acid to a beaker.

Then, we add some copper(II) oxide powder to the beaker, and we keep adding until there is an excess.

Then we filter the combination, add the copper(II) sulfate filtrate to an evaporating basin, and heat the solution to make the water in it evaporate by half.

Finally, copper(II) sulfate crystals are obtained by pouring the aforementioned solution into an evaporating basin and letting it sit there until all the water has evaporated.

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