Pt | Cr3+(0.40 M), Cr2O72-(0.30 M), H+(0.010M) || MnO4-(0.10 M), Mn2+(0.20 M), H+(0.010M) | Pt

The standard reduction potentials are as follows:

MnO4- + 8H+ + 5e- ----> Mn2+ + 4H2O; Eo = +1.51 V

Cr2O72- + 5e- -----> 2Cr3+ + 7H2O; Eo = +1.33 V

When current is allowed to flow, which species is reduced?

folic Acid

Folic acid, often known as folate, is a water-soluble B vitamin that is necessary for the generation of healthy red blood cells and the regular functioning of the brain system. Folate is present in numerous foods, including leafy green vegetables, legumes, nuts, and grains. Numerous processed goods, including breakfast cereals, breads, and rice, contain it as well. Folic acid is essential for pregnant women because it prevents birth abnormalities. It is also crucial for people of all ages since it helps maintain the health and normal operation of the body's cells. Folic acid is also essential for the production and repair of DNA, as well as the breakdown of specific proteins. Without appropriate folic acid, the body cannot produce red blood cells effectively, which can result in anemia. It is essential to consume adequate amounts of folic acid through diet or supplementation.

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The net charge of the predominant form of Arginine at pH 1.0 = +1; at pH 5.0 = 0; at pH 10.5 = 0; at pH 13.5 = -1.

Arginine (Arg) is an amino acid that is acidic in nature. It has a net charge that varies with pH. At different pH values, the net charge of Arginine varies.

The net charge of the predominant form of Arginine at pH 1.0, pH 5.0, pH 10.5, and pH 13.5 is explained below:

pH 1.0 - At pH 1.0, the net charge on Arginine can be calculated as follows:

Arginine (pKa1 = 2.17, pKa2 = 9.04, pKa3 = 12.48) has three dissociable protons.

At pH 1.0, the charge of carboxyl group (pKa1 = 2.17) = -1

At pH 1.0, the charge of amino group (pKa3 = 12.48) = +1

At pH 1.0, the charge of the guanidine group (pKa2 = 9.04) = +1

Therefore, the net charge of the predominant form of Arginine at pH 1.0 = (-1) + (+1) + (+1) = +1

pH 5.0 - At pH 5.0, the net charge on Arginine can be calculated as follows:

Arginine (pKa1 = 2.17, pKa2 = 9.04, pKa3 = 12.48) has three dissociable protons.

At pH 5.0, the charge of carboxyl group (pKa1 = 2.17) = -1

At pH 5.0, the charge of amino group (pKa3 = 12.48) = +1

At pH 5.0, the charge of the guanidine group (pKa2 = 9.04) = 0

Therefore, the net charge of the predominant form of Arginine at pH 5.0 = (-1) + (+1) + (0) = 0

pH 10.5 - At pH 10.5, the net charge on Arginine can be calculated as follows:

Arginine (pKa1 = 2.17, pKa2 = 9.04, pKa3 = 12.48) has three dissociable protons.

At pH 10.5, the charge of carboxyl group (pKa1 = 2.17) = -1

At pH 10.5, the charge of amino group (pKa3 = 12.48) = 0

At pH 10.5, the charge of the guanidine group (pKa2 = 9.04) = +1

Therefore, the net charge of the predominant form of Arginine at pH 10.5 = (-1) + (0) + (+1) = 0

pH 13.5 - At pH 13.5, the net charge on Arginine can be calculated as follows:

Arginine (pKa1 = 2.17, pKa2 = 9.04, pKa3 = 12.48) has three dissociable protons.

At pH 13.5, the charge of carboxyl group (pKa1 = 2.17) = -1

At pH 13.5, the charge of amino group (pKa3 = 12.48) = 0

At pH 13.5, the charge of the guanidine group (pKa2 = 9.04) = 0

Therefore, The net charge of the predominant form of Arginine at pH 13.5 = (-1) + (0) + (0) = -1

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Valence bond theory describes a single covalent bond as the overlap of orbitals from two atoms to form a shared space, which is occupied by two electron(s).

What is valence bond?

It is a chemical bonding hypothesis. According to VBT, the creation of a chemical bond between two atoms is caused by the overlap of incompletely filled atomic orbitals. Unpaired electrons are shared, resulting in the formation of a hybrid orbital.

What is covalent bond ?

Covalent bonds are formed by atoms exchanging electron pairs. Electron pairs shared by atoms with equal or very comparable electronegativity form a nonpolar covalent link (e.g., H-H or C-H), whereas electron pairs shared by atoms with uneven electronegativity form a polar covalent bond (e.g., H-H or C-H) (e.g., H–O).

Therefore, Valence bond theory describes a single covalent bond as the overlap of orbitals from two atoms to form a shared space, which is occupied by two electron(s).

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Action and reaction forces are Newton's law of motion. The action force on the hot air balloon makes them rise.

Newton's third law or the law of action and reaction is present that allows describes the force applied to the object in opposite and equal in magnitude when the two objects interact mutually.

The action force is the force applied with a magnitude and in a direction opposite to the reaction force of the object. In the case of hot air balloon action, force is applied from down to the upper direction that allows the balloon to rise.

Therefore, the action force option D. allows the hot air balloon to rise.

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Amino acids are the monomeric units of the macromolecule, protein. The amino acid sequence of a polypeptide is referred to as the primary sequence of the polypeptide. Thus, option A is correct.

The polypeptide chain has been constituted of the amino acids bonded together with the help of the peptide bonds. Many amino acids link to form the proteins that result in a macromolecule.

Amino acids are said to be a primary and fundamental unit that structurally makes polypeptides that bond in various ways to produce proteins.

Therefore, option A. amino acids are the primary structure of the polypeptide sequence.

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Your question is incomplete, but most probably your full question was, The amino acid sequence of a polypeptide is referred to as the _____ sequence of the polypeptide. A) primary. B) secondary. C) tertiary. D) quaternary.

Answer:

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

Explanation:

Answer:

Q

Explanation:

The temperature at which the reaction would go twice as fast is 67.2°C when the activation energy of a certain reaction is 48.4 kJ/mol kJ/mol.

The rate constant of a reaction is related to its activation energy through the Arrhenius equation, which states that k = \(Ae^{(-Ea/RT)}\), where k is the rate constant, Ea is the activation energy, R is the gas constant, and T is the temperature in Kelvin.
To find the temperature at which the reaction would go twice as fast, we can use the fact that the rate constant is proportional to the reaction rate, so if we want the reaction to go twice as fast, we need to double the rate constant.
Using the Arrhenius equation, we can write:
\(k1 = Ae^{(-Ea/RT1)}\)
\(k2 = Ae^{(-Ea/RT2)}\)
where k1 is the rate constant at 26°C, k2 is the rate constant at the unknown temperature, T1 is 26°C converted to Kelvin (299 K), and T2 is the unknown temperature converted to Kelvin.
We know that we want k2 to be twice k1, so:
2k1 = k2
\(2Ae^{(-Ea/RT1)} = Ae^{(-Ea/RT2)}\)
Simplifying:
\(2 = e^{(Ea/R * (1/T2 - 1/T1))}\)
Taking the natural logarithm of both sides: \(k2 = Ae^{(-Ea/RT2)}\)
ln(2) = Ea/R * (1/T2 - 1/T1)
Rearranging:
T2 = 1/(1/T1 + (R/Ea)*ln(2))
Plugging in the values we have:
T2 = 1/(1/299 + (8.314/48.4)*ln(2))
T2 = 340.3 K
Converting back to Celsius:
T2 = 67.2°C

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Decanting the sample onto the center of a filter paper after assembling the filtering device for an organic combination to start the separation process.

To transfer (a water, like wine) from one container into another by drawing out the liquid without upsetting the sediment or perhaps the lower layers before the meal, the wine was decanted. to move, unload, or pour out something.

Oil and Water: On water, oil floats. After allowing an oil / water mixture to settle for a while, the oil can be poured off of the water. A separatory funnel can be used to separate the water and oil. Cleansing murky water with decantation is one method.

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The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration

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Answer:

a....................

Answer:

Mg(OH)₂ ​+  2HCI → MgCI₂ ​+ 2 H₂ ​O

Explanation:

The rate of appearance of Br2 is 0.202 M / 2 = 0.101 M. The rate of disappearance of HBr is 0.202 M. This means that the concentration of HBr is decreasing at a rate of 0.202 M per unit time.

The rate of disappearance is the rate of that particular chemical concentration going down. This means the chemical reactant is getting consumed in the reaction. One can use any reaction to prove the rate of disappearance of ammonia.. The rate of appearance of Br2 is the rate at which the concentration of Br2 is increasing. Since the reaction is 2 HBr(g) → Br2(g) + H2(g).

The rate of appearance of Br2 is half the rate of disappearance of HBr. Therefore, the rate of appearance of Br2 is 0.202 M / 2 = 0.101 M.

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52.66 grams of acetylene are in the tank.

PV=nRT is the formula for ideal gases, where P is the pressure and R is the constant and T is the temperature (P is 1.39 atm in this case)

Volume = 35.0 L

Gas constant = 0.08206 L.atm/K.mole

Temperature = 20.0 °C  = 293 °C

We also know that we can apply the formula ;

Number of mole(n) = \(\frac{MmPV}{RT}\)

m = ( 26.04 × 1.39 × 35 )/ (0.08206 × 293.15)

m = 52.66 g

Thus, the mass is 52.66 grams.

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Explanation:

The elements arranged in order of increasing electronegativity are: tin, tellurium, antimony, iodine.

Electronegativity is a measure of an atom's ability to attract electrons towards itself in a chemical bond. In general, electronegativity tends to increase as you move across a period from left to right on the periodic table and decrease as you move down a group.

Among the given elements, tin (Sn) has the lowest electronegativity. It is a metal and tends to have lower electronegativity values compared to nonmetals. Tellurium (Te) has a slightly higher electronegativity than tin but lower than the remaining two elements.

Antimony (Sb) has a higher electronegativity than tellurium. It is a metalloid and has intermediate electronegativity values. Finally, iodine (I) has the highest electronegativity among the given elements. It is a nonmetal and tends to have higher electronegativity values compared to metals and metalloids.

Therefore, the elements arranged in order of increasing electronegativity are: tin, tellurium, antimony, iodine.

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Answer:

The cell membrane is, The thin membrane that forms the outer surface of the protoplasm of a cell

In an equilibrium reaction, the forward and reverse reactions are proceeding at the same rate. option (d) is correct.

A Chemical equilibrium in a system is defined as a system in which the concentration of reactant and the concentration of  products do not change with time, also the system does not display kind of change in its properties.

When the rate of forward and backward reaction is same, the system is said to have reached a dynamic equilibrium. Here, the concentrations of reactants and products become equal.

There are two types of equilibrium: homogenous equilibrium, heterogeneous equilibrium.

In homogeneous equilibrium the reactants and products are in the same phase. Whereas, in heterogeneous equilibrium the reactants and products are in different phases.

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Answer:

1. positive

2. no relationship

3. negative

Explanation:

1. increasing would mean x and y are becoming greater

2. straight across would not be increasing x or y

3. decreasing would mean y (probably not x) is getting smaller

i hope that's what you're looking for

Answer:

B

Explanation:

Because when you go to the doctors they say, "You need to get your x-rays done" not microwave

Answer:Sexual reproduction can be described as the method of reproduction in which the offsprings produced will have half the chromosomes as compared to the parent cell. The other half of the chromosomes to make a complete set would arise from the other parent. In this way, the offspring produced will carry half of the chromosomes from the female parent and half from the male parent.

Crossing over and independent assortment are two phenomenons of meiosis due to which genetic diversity occurs and the offsprings born are not exactly similar to the parent cell.

Explanation:

The sum of all the coefficients of the reaction MnO⁴⁻ + SO₃²⁻ → MnO₂ + SO₄²⁻ after balancing is found to be 16.

Here, is the unbalanced equation ('skeleton equation') of the chemical reaction. All reactants and products must be known. For a better result write the reaction in ionic form.

MnO⁴⁻ + SO₃²⁻ → MnO₂ + SO₄²⁻

Firstly, we balanced the not oxygen and hydrogen compounds by adding the required coefficient in from the the respective element of the reaction in the acidic medium.

Now, then we balance the oxygen atom by adding the water molecules on the opposite side of the required side of the reaction.

It is to be noted that we are using H₂O molecule and OH⁻ for balancing hydrogen molecules because it is in the acidic medium.

Now, the final reaction is,

2MnO₄⁻ + 3Mn²⁺ + 4OH⁻ → 5MnO₂ + 2H₂O

Now, the sum of all coefficients is 16.

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Complete question - when the balancing of the equation for the reaction,

MnO⁴⁻ + SO₃²⁻ → MnO₂ + SO₄²⁻ taking place in acidic media is properly completed, what is the sum of all the coefficients in the equation?

The equilibrium constant has been the ratio of the product and the reactant concentration raised to the stoichiometric coefficient. The equilibrium concentration of methane is 0.059 M.

The equilibrium can be defined as the condition in which the rate of formation of product and the rate of breakdown of product is equal.

The given reaction has been:

\(\rm CO+3\;H_2\;\leftrightharpoons\;CH_4+H_2O\)

The equilibrium constant (kc) for the reaction has been given as :

\(k_c=\rm \dfrac{[CH_4][H_2O]}{[CO][H_2]^3}\)

Substituting the values of the equilibrium concentration in the equation as:

\(k_c=\dfrac{[\text C\text H_4][0.020]}{[0.30][0.10]^3} \\\\3.90=\dfrac{[\text C\text H_4]\;\times\;0.020}{0.0003} \\\\\rm CH_4=0.059\;M\)

The equilibrium concentration of methane is 0.059 M. Thus, option C is correct.

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Answer:

Explanation:

__________________________________________________________

According to Answers,

There is one covalent bond in a chlorine molecule. The formula for a chlorine molecule is Cl2, which means that there are two chlorine atoms bonded together per molecule. The structural formula for a molecule of chlorine is Cl-Cl, in which the line in between the symbols for the two atoms represents a single covalent bond.

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Hope this helps! <3

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A formula for the sensitivity dR/dM  represents the sensitivity of the body's reaction to the medication. It shows how the reaction changes with respect to the dose of the medication, M. The term M*C represents the contribution of the constant C to the sensitivity, while the term \((2M^2)/3\) represents the contribution of the dose M itself.

To find a formula for the sensitivity, dR/dM, let's differentiate the given function R(M) with respect to M.

Step 1: Start with the function \(R(M) = M^2(C/2 - M/3).\)

Step 2: Apply the power rule of differentiation to differentiate M^2. The power rule states that if

\(f(x) = x^n, then f'(x) = n*x^(n-1). \\\)

n this case, n = 2.

\(dR/dM = 2M^(2-1)*(C/2 - M/3).\)

Simplifying, we have:

\(dR/dM = 2M*(C/2 - M/3).\)

Step 3: Distribute the 2M to each term inside the parentheses:

\(dR/dM = M*C - (2M^2)/3.\)

This formula represents the sensitivity of the body's reaction to the medication, dR/dM. It shows how the reaction changes with respect to the dose of the medication, M. The term M*C represents the contribution of the constant C to the sensitivity, while the term \((2M^2)/3\) represents the contribution of the dose M itself.

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the formula for the sensitivity, or the rate of change of the reaction R with respect to the dose M, is

dR/dM = MC - M\(^2^/^3\)

We calculate the derivative of the reaction function R(M) with respect to M.

the reaction function: R(M) = M²(C/2 - M/3)

We will apply  the power rule and the constant multiple rule of differentiation,

dR/dM = d/dM [M²(C/2 - M/3)]

= 2M(C/2 - M/3) + M²(0 - (-1/3))

= 2M(C/2 - M/3) + M\(^2^/^3\)

dR/dM =\(MC - 2M^2^/^3 + M^2^/^3\)

= \(MC - M^2^/^3\)

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