Human liver enzymes catalyze the degradation of ingested toxins. By what factor is the rate of a detoxification changed if an enzyme lowers the Ea by 5 kJ/mol at 37°C?

Phenol red is a pH indicator that changes color depending on the acidity of the solution. it is the Acid-Base reaction. When you breathe into a solution containing phenol red, the carbon dioxide in your breath reacts with the water in the solution to form carbonic acid, which is an acid. This increases the acidity of the solution, which causes the phenol red to turn yellow.

Phenol red is a pH indicator that turns yellow when you breathe into a solution. This reaction explains why the solution turned acidic, which can be explained by the following reaction process:

CO2 + H2O → H2CO3 → H+ + HCO3-

The carbon dioxide you exhale into the solution is soluble in water and reacts with it to form carbonic acid (H2CO3).Carbonic acid is a weak acid that dissociates into bicarbonate ions (HCO3-) and hydrogen ions (H+).The hydrogen ions then combine with the indicator phenol red and make the solution acidic, turning it yellow. Hence, the color change of the phenol red to yellow is an indicator that the solution is acidic. Phenol red is a pH indicator that is used to determine whether a solution is acidic or basic. It is widely used in microbiology as an indicator of carbohydrate fermentation. The indicator changes from red to yellow as the pH of the solution decreases. A yellow color indicates that the solution is acidic, while a red color indicates that the solution is alkaline. Phenol red is widely used to detect pH changes in laboratory and clinical settings. It is commonly used in biology labs to determine the pH of bacterial cultures and media. In clinical settings, it is used to measure pH changes in blood and urine samples.

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From the following list of Sc, N, Nd, Mt

1) Transition metal in the fourth period Sc

2) A metalloid __

3)a non-metal N

4)a lanthanide Nd.

5)a metal in group 3a or 4a __

What are metalloids?

A metalloid is a particular kind of chemical element with a majority of properties that fall between those of metals and nonmetals, or that are a combination of both. There is no agreed-upon definition of a metalloid and no consensus on which elements qualify as metalloids.

A chemical component that results in a straightforward substance with properties that fall somewhere between those of a conventional metal and a typical nonmetal.

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To produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta. To determine the amount of pasta required to produce 1000 kg of fishmeal, we need to consider the mass balance of the process. Let's break down the steps involved:

A. Extraction of fish oil:

The pasta obtained from the extraction stage contains 20% flour and 80% water. To calculate the amount of pasta, we need to determine the mass of flour and water in the pasta. Let's assume the total mass of the pasta is P kg.

Mass of flour = 20% of P = 0.2P kg

Mass of water = 80% of P = 0.8P kg

b. Drying of pasta:

During the drying stage, the pasta is dried in a rotary drum, resulting in fishmeal with 40% humidity. This means that the final fishmeal will contain 60% dry matter.

Let's assume the mass of the dried fishmeal is M kg.

Mass of dry matter = 60% of M = 0.6M kg

Since the dry matter in the fishmeal comes from the flour in the pasta, we can equate the mass of dry matter to the mass of flour:

0.6M kg = 0.2P kg

To produce 1000 kg of fishmeal, we want to find the corresponding value of P:

0.6M = 0.2P

P = (0.6M) / 0.2

P = 3M

Therefore, to produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta.

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His distance and displacement are the same, which was 400 m

Given

Distance = 400 m

time = 2 min

Required

Distance and displacement

Solution

Distance is a scalar quantity that indicates the length of the trajectory that is traveled by an object within a certain interval. Distance has no direction, only has magnitude  

Can be simplified distance = totals traveled  

Displacement is a vector quantity that shows changes in the position of objects in a certain interval of time. Displacement has magnitude and direction  

Can be simplified displacement = distanced traveled from starting point to ending point  

From the definition above shows that the displacement and the distance that he traveled have the same value (magnitude), which is equal to 400 m

The value of the two will be different if he starts and finishes at the same point, then the displacement value is zero while the distance he has traveled is still 0

Answer:

oxygen

Explanation:

plants use oxygen

The enthalpy of the reaction as written is approximately 239,306 J/mol.

To calculate the enthalpy of the reaction, we need to use the heat released (2330 J) and the amount of sodium reacted (0.224 g) to determine the heat released per mole of sodium reacted.

The molar mass of sodium (Na) is 22.99 g/mol.

First, we need to calculate the number of moles of sodium reacted:

Number of moles of Na = Mass of Na / Molar mass of Na

Number of moles of Na = 0.224 g / 22.99 g/mol ≈ 0.00974 mol

Next, we can calculate the enthalpy change (ΔH) per mole of sodium reacted:

ΔH = Heat released / Number of moles of Na

ΔH = 2330 J / 0.00974 mol ≈ 239306 J/mol

Enthalpy (H) is a thermodynamic property that represents the total heat content of a system at constant pressure. It includes the internal energy of the system plus the product of pressure and volume. Enthalpy is often used to describe heat changes in chemical reactions, where the difference in enthalpy between the reactants and products determines whether a reaction is exothermic (releases heat) or endothermic (absorbs heat). Enthalpy is typically measured in joules (J) or kilojoules (kJ).

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Main Answer:

The mass of HgBr2 that can be produced from the reaction of 5.08 mL of mercury and 5.08 mL of bromine can be calculated by first determining the masses of mercury and bromine used, and then using the balanced chemical equation for the reaction.

Supporting Answer:

Given that the density of mercury is 13.6 g/mL, the mass of mercury used can be calculated as follows:

Mass of mercury = Volume of mercury × Density of mercury = 5.08 mL × 13.6 g/mL

Similarly, the mass of bromine used can be calculated using the density of bromine, which is 3.10 g/mL:

Mass of bromine = Volume of bromine × Density of bromine = 5.08 mL × 3.10 g/mL

Next, we need to use the balanced chemical equation to determine the molar ratio between mercury and mercury(II) bromide (HgBr2). Let's assume the balanced equation is:

Hg + Br2 → HgBr2

Based on the balanced equation, the molar ratio between Hg and HgBr2 is 1:1. Therefore, the mass of HgBr2 can be calculated as:

Mass of HgBr2 = Mass of mercury × Molar mass of HgBr2 / Molar mass of Hg

where the molar masses can be obtained from the periodic table.

By plugging in the values and performing the calculations, you can determine the mass of HgBr2 produced.

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Answer:

The change in smell

Explanation:

chemical reactions ccan lead to change in temperature, change in color and also change in smell

Answer:the element contain only one type of atomic while the cpd contain more than two types of atoms

Explanation:

Answer:

Potential energy.

Explanation:

Potential energy is the energy in a body due to its position.

Answer:

Explanation:

C3H8= C3H6 +H2

To produce 180 millilitres of a saline solution of the same concentration, we need 1.2 milligrams of salt.

It is given that a ratio of 0.5 milligrams of salt is present in 75 millilitres of solution. Let us assign a variable x to the amount of salt present in 180 millilitres of saline solution.

To maintain the same concentration we can use the method of cross-multiplication:

The following equation can be used to determine the value of x:

0.5 mg / 75 ml = x mg / 180 ml

( 0.5 × 180) / 75 = x mg

x mg = 90 / 75

Hence x is approximately equal to 1.2 mg.

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Answer:

B

A

C

Explanation:

LiClO4=  B) Lithium perchlorate

LiCl=         A) Lithium chloride

LiClO2=    C) Lithium chlorite

Hope this helps

The correct match of the formula to its name is LiClO₄ is Lithium perchlorate , LiCl is Lithium Chloride and LiClO₂ is Lithium Chlorite.

A common name is defined by the IUPAC as a name that unambiguously defines a chemical, yet does not follow the current systematic naming convention.

Therefore, The correct match of the formula to its name is LiClO₄ is Lithium perchlorate , LiCl is Lithium Chloride and LiClO₂ is Lithium Chlorite.

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The half life of a certain radioactive sample is 1 hr. if the mass of the sample is 1 gram at noon, what will be the mass of the sample at 3pm?

The half-life is the time it takes for one-half of the radioactive element to decay. The value of the half-life given here is one hour.

After one hour (1 PM) there would only be

(1/2)*(1 g)= 0.5 g of the element remaining.

After three hours (3 PM) there would only be

(1/2)*(1/2)*(1/2)*(1 g) = (1/8)g remaining.

Half-life is the time required for a quantity to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive. The term is also used more generally to characterize any type of exponential decay.

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Answer:  An element is a single atom.

Explanation:

An element cannot be divided into smaller parts (that was true before the physicists built atomic weapons and the Large Hadron Collider).  But the definition of an atom was establish before Einstein, Oppenheimer, and Rutherford.  An element is an atom.  A compound is two or more atoms bonded together.   Carbon is an element, and one carbon all by itself is an atom.  A carbon that has some hydrogens attached (e.g, methane, CH4) are compounds.  An oxygen atom is just sa single O.  We write O2 since that is the form it takes in nature.  O is an atom, O2 is a molecule.

To make 1300 mL of a 0.280 M NH3 solution, you should dilute approximately 56.61 mL of the stock solution of 14.6 M NH3.

The diluted solution can be prepared using the equation:

M1V1 = M2V2

where

M1 = initial concentration

V1= stock solution volume

M2 = desired concentration

V2 = diluted solution volume

Given:

M1 = 14.6 M (concentration of the stock solution)

V1 = ?

M2 = 0.280 M (desired concentration of the diluted solution)

V2 = 1300 mL (desired volume of the diluted solution)

Rearranging the equation, we have:

V1 = (M2 * V2) / M1

Substituting the given values:

V1 = (0.280 M * 1300 mL) / 14.6 M

V1 ≈ 56.61 mL

Therefore, you should dilute approximately 56.61 mL of the stock solution of 14.6 M NH3 to make 1300 mL of a 0.280 M NH3 solution.

To prepare 1300 mL of a 0.280 M NH3 solution, you need to dilute approximately 56.61 mL of the stock solution of 14.6 M NH3. Dilution calculations involve using the equation M1V1 = M2V2, where the initial concentration, volume, and desired concentration and volume are taken into account. Dilution is a common technique in the laboratory to adjust the concentration of a solution to a desired level.

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Based on the given options, the following statements are true of carbon: It can form a maximum of four covalent bonds with other elements and It can form both polar and nonpolar bonds.

Carbon is an element with atomic number 6, meaning it has six protons in its nucleus. It has four valence electrons, which are the electrons involved in bonding with other atoms.

Carbon's electron configuration allows it to form four covalent bonds by sharing its valence electrons with other atoms. This property is known as tetravalency and is a fundamental characteristic of carbon.

Additionally, carbon can form both polar and nonpolar bonds depending on the atoms it is bonded to and the electronegativity difference between them.

When carbon bonds with atoms of similar electronegativity, such as hydrogen, the bond is nonpolar because the electrons are shared equally. However, if carbon bonds with atoms of higher electronegativity, such as oxygen or nitrogen, the bond becomes polar due to the unequal sharing of electrons.

In summary, carbon can form a maximum of four covalent bonds with other elements due to its tetravalent nature. It is not highly electronegative itself but can form both polar and nonpolar bonds depending on the atoms it is bonded to. Therefore, the correct statements are:

It can form a maximum of four covalent bonds with other elements.

It can form both polar and nonpolar bonds.

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The formula \(S = k ln(W)\) relates the disorder or randomness of a system to its temperature

Entropy is a measure of the disorder or randomness of a system. It can be defined using Boltzmann's constant \((k),\) which relates the energy of a system to its temperature.

The formula for entropy \((S)\) using Boltzmann's constant is:

\(S = k ln(W)\)

where W is the number of microstates that correspond to a given macrostate. In other words, W is the number of ways that a system can be arranged while still maintaining the same macroscopic properties, such as temperature, volume, and pressure.

Boltzmann's constant is a fundamental physical constant that relates the average kinetic energy of particles in a system to its temperature. It is defined as \(k = R/N_A,\) where R is the gas constant and \(N_A\) is Avogadro's number.

The natural logarithm of W \((ln(W))\) is a measure of the multiplicity of a system, or the number of possible arrangements of its particles. The higher the multiplicity, the more ways the system can be arranged, and the more disorder or randomness it has.

Therefore, through Boltzmann's constant and the number of possible arrangements of the system.

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Answer:

hey mate your answer is

D ALL OF THESE

HOPE IT HELPS YOU

To make sedimentary rock, broken bits of sedimentary, igneous, and metamorphic rocks get deposited in layers and bonded together.

So, option d. is correct.

Sedimentary rocks are created by the accumulation and deposition of mineral and organic particles just at earth's surface, followed by cementation. The processes that enable these particles that settle in place are referred to as sedimentation.

To make sedimentary rock, broken bits of sedimentary, igneous, and metamorphic rocks get deposited in layers and bonded together.

So, option d. is correct.

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The correct answer is option C.  if you are looking for a non-dairy alternative to get the same amount of calcium as 8 oz of nonfat milk, canned sardines can be an excellent option.

which is 1.5 oz of canned sardines. Nonfat milk contains approximately 300 milligrams of calcium per 8-ounce serving. Sardines are an excellent source of calcium and a 1.5-ounce serving of canned sardines contains around 325 milligrams of calcium, which is equivalent to the calcium content in 8 ounces of nonfat milk.

Option A, 4.9 oz plain, nonfat yogurt, contains around 150 milligrams of calcium, which is less than half the amount present in 8 oz of nonfat milk. Option B, 4.9 oz Swiss cheese, contains around 270 milligrams of calcium, which is slightly less than the amount present in 8 oz of nonfat milk. Option D, 1 cup of lima beans, contains around 32 milligrams of calcium, which is a significantly lower amount than what is present in 8 oz of nonfat milk.

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Answer:

Most human traits have complex modes of inheritance. They may be controlled by onegene with multiple alleles or by multiple genes. More complexity may be introduced by pleiotropy (one gene, multiple effect) and epistasis (gene-gene interactions). Many genetic disorders are caused by mutations in one or a few genes.

The coefficient for OH- (aq) in the balanced equation in basic aqueous solution is 12.

To balance this equation in basic aqueous solution, we first balance the atoms that are not hydrogen or oxygen. We start by balancing the Fe atoms on both sides, which requires multiplying Fe2+ on the reactant side by 3 to get 3Fe2+. Next, we balance the Mn atoms on both sides, which requires multiplying MnO4- on the reactant side by 2 to get 2MnO4-.
The balanced equation in basic solution is:
2MnO4- + 6Fe2+ + 8OH- → 2Mn2+ + 6Fe3+ + 4H2O
To find the coefficient for OH- (aq), we look at the number of OH- ions on both sides of the equation. On the reactant side, there are 8 OH- ions. On the product side, there are 4 H2O molecules, each of which contains 2 H+ ions and 1 OH- ion, so there are a total of 8 H+ ions and 4 OH- ions.
To balance the OH- ions, we add 4 OH- ions to the reactant side to get a total of 12 OH- ions, and the balanced equation in basic solution is:
2MnO4- + 6Fe2+ + 12OH- → 2Mn2+ + 6Fe3+ + 4H2O
Therefore, the coefficient for OH- (aq) in the balanced equation in basic aqueous solution is 12.

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The molar concentration of the barium hydroxide solution is 0.1379 M.

To find the molar concentration of the barium hydroxide solution, we can use the equation:

Molarity of acid x Volume of acid = Molarity of base x Volume of base

We are given the volume and molarity of the acid solution, which is 38.65 mL and 0.0895 M, respectively. We are also given the volume of the base solution, which is 25.00 mL.

Let x be the molarity of the barium hydroxide solution. Substituting the given values into the equation, we get:

0.0895 M x 38.65 mL = x (25.00 mL)

Solving for x, we get:

x = (0.0895 M x 38.65 mL) / 25.00 mL = 0.1379 M

Therefore,0.1379 M is the molar concentration of the barium hydroxide solution.

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At the At the equivalence point of a strong acid/weak base titration, the pH is greater than 7 but less than 14.

This is because the strong acid is completely neutralized by the weak base, leading to the formation of a salt and water. The salt produced may have an acidic, basic, or neutral pH depending on the nature of the anion and cation. However, since the weak base is not completely neutralized, some of it remains in the solution, leading to the formation of a basic solution with a pH greater than 7. The exact pH at the equivalence point can be determined by looking at the dissociation constant (Ka) of the weak base and the concentration of the salt and water content loaded. The pH at the equivalence point of a strong acid/weak base titration will be less than 7. This is because the resulting solution will contain a weak acid, which contributes to a slightly acidic pH. The exact pH value depends on the specific acid and base involved in the reaction.

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Answer:

Carbon carbon | C2H8 - PubChem.

Explanation:

Brainliest plz :)

Answer:

Carbon carbon | C2H8

Explanation:

happy to help

Answer:

choose a. 30 parts alcohol

The mass of Fe2S3 formed would be 12.0 g

The limiting reactant is iron (Fe)

The percent yield of iron (III) sulfide would be 108.4%

Fe + S -> FeS

From the equation, we see that one mole of Fe reacts with one mole of S to produce one mole of FeS. To determine the mass of FeS that can be formed, we need to determine which reactant is limiting and which is in excess.

Number of moles of Fe = mass / molar mass = 7.62 g / 55.845 g/mol = 0.136 moles

Number of moles of S = mass / molar mass = 8.67 g / 32.06 g/mol = 0.27 moles

We see that Fe is limiting because there are fewer moles of Fe than S. The stoichiometry of the reaction tells us that one mole of Fe produces one mole of FeS.

The mass of FeS that can be formed is:

mass = number of moles × molar mass

mass = 0.136 moles × 87.91 g/mol (molar mass of FeS)

mass = 12.0 g

percent yield = actual yield / theoretical yield × 100%

percent yield = 13.01 g / 12.0 g × 100%

percent yield = 108.4%

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