The citric acid cycle enzyme, fumarase, catalyzes the conversion of fumarate to malate: (15 points) Fumarate+ H2O → Malate The turnover number, kcat, for fumarase is 800/sec. The Km of fumarase for its substrate is 5uM. (a) In an experiment using 2 nM of fumarase, what is Vmax? (b) The cellular concentration of fumarate is 47.5 μM. what is Vo when [fumarate 47.5 μM? (c) What is the catalytic efficiency of fumarase?

Answer:

its a chemical Reaction

Explanation:

Answer:Hydrogen

Explanation:is the most abundant element in the universe (75%by weight or 88% of all of the atoms of the universe)

The height of a ramp does not directly determine the strength of the frictional force between a book and an object.

The strength of the frictional force between a book and an object is not directly influenced by the height of a ramp. The nature of the surfaces in contact, the force forcing the surfaces together (normal force), and the coefficient of friction are some of the variables that affect the frictional force between two surfaces.

The coefficient of friction between the book and the object plays a major role in determining the strength of the frictional force.

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Answer:

Five points of Dalton's atomic theory:

1) all elements are made up of atoms.  

2) atoms are so small that they cannot be divided any further.  

3) an atom can neither be destroyed nor be formed.  

4) atoms of an element are similar, they possess the same mass and same properties.  

5) atoms of different elements combine in a definite ratio to form compounds.  

Due to further experimentation, it was concluded that an atom is made up of small particles identified as protons, neutrons, and electrons. They can be further subdivided.

Another change is the presence of isotopes of atoms of different elements. Hence, atoms of the same element can also have different masses.

Hope this helps, have a nice day/night! :D

As per Dalton's atomic model atoms are the minuscule, distinct building blocks of all stuff.

What is Dalton's atomic model?

Dalton proposed that the concept of atoms may be used to explain the laws of conservation of mass as well as definite proportions. He proposed that atoms, of the kind, that he described as "solid, tightly compacted, hard, impenetrable, moving particle," are the smallest, indivisible units of matter.

Dalton's atomic model is as fellow:

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Answer:

The full spikes and spherical shape of perennial bee balm make it an interesting and attractive plant in the garden—and a magnet for hummingbirds, butterflies, and other pollinators. This flower typically grows two to four feet tall and requires dividing every three to four years.

Explanation:

There are many flowers that can attract hummingbirds, but some are better at enticing these flying jewels than others.

When choosing hummingbird flowers for your garden or landscape, look for blooms with rich, bright colors (red flowers are particular hummingbird favorites), long or tapered shapes that can accommodate the hovering birds' long bills, and plentiful nectar to keep them coming back for more sips.

Native plants are always preferred because hummingbirds will be more familiar with the flowers and the plants will thrive with minimal care. Also, consider plants with a long bloom time or repeat blooming, which will provide a reliable food source for hummingbirds for many weeks.

Hope this helps you !

Answer:

the one that has more power to it

The least reactive metals are found at the bottom of the activity series, while the most reactive metals are found at the top. Option D.

The activity series is a ranking of the reactivity of metals, in which the least reactive metals are placed at the bottom and the most reactive metals are placed at the top. The activity series is based on the tendency of metals to lose electrons, and the reactivity of a metal is inversely proportional to its position in the series.

Therefore, the least reactive metals are found at the bottom of the activity series, where they are least likely to lose electrons, while the most reactive metals are found at the top of the series, where they are most likely to lose electrons.  

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Answer:

2.00

Explanation:

From Graham's law; the rate of effusion is inversely proportional to the square root of the relative molecular mass.

Let the rate of effusion of Helium be R1

Let the rate of effusion of Methane be R2

Let the molecular mass of Helium be M1

Let the molecular mass of Methane be M2

Hence;

R1/R2 = √M2/M1

R1/R2 = √16.0294/4.0026

R1/R2 = 2.00

According to Le Chatelier's principle, if a cation forms an insoluble precipitate with [AgCl], the direction that is favored when added to the system is for the precipitate to form.

When a cation is added to a solution containing Ag+ ions and Cl- ions, it can form an insoluble precipitate with AgCl if it is one of the cations that are capable of doing so. This will cause AgCl to come out of the solution and form a solid precipitate.

This reaction is exothermic, releasing heat, and the formation of the precipitate will consume Ag+ and Cl- ions, which will decrease the concentration of the ions in the solution.

By consuming the reactants, the formation of the precipitate will cause the reaction to shift to the right, in the direction of the formation of the precipitate. This is in agreement with Le Chatelier's principle which states that a system at equilibrium will shift to counteract the changes imposed on it.

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Answer:

As electro-negativity decreases from Florine to downwards in the group and only Florine is above Chlorine, so Florine should react with sodium chloride solution to produce chlorine.  

mark me brinilylist pls

In the motivated sequence, the step where the speaker establishes relevancy, interest, and motivation to listen is called the "Attention" step.

The purpose of the Attention step is to capture the audience's attention, pique their interest, and make them understand why the topic being presented is relevant and important to them. The speaker uses various techniques, such as engaging stories, startling facts, or thought-provoking questions, to grab the audience's attention and create a connection between the topic and their personal interests or concerns.

By establishing relevancy, interest, and motivation to listen in the Attention step, the speaker sets the stage for the rest of the presentation and increases the likelihood of audience engagement and receptiveness to the message.

The given question is incomplete and the completed question is given as,

In the text's persuasive speech example to get the audience to enroll in a CPR course, in what step of the motivated sequence would the speaker establish relevancy, interest, and motivation to listen?

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Answer:

if ur gonna cry then just dont cry its simple logic guyss!!!!!!!!!!!!

Explanation:

Effusion is the process by which a gas escapes through a tiny hole or porous material into a region of lower pressure. The rate of effusion is directly proportional to the average speed of the gas particles, which in turn is related to their molecular weight. The ratio of the rate of effusion of CO₂ to that of He is 0.302.

The rate of effusion is inversely proportional to the square root of the molar mass of a gas. The molar mass of CO₂ is 44.01 g/mol, while the molar mass of He is 4.00 g/mol. Thus, the square root of the molar mass of CO₂ is √44.01 = 6.63 g/mol, and the square root of the molar mass of He is √4.00 = 2.00 g/mol.

Using the equation for the ratio of the rates of effusion, we get:

Rate of CO₂ effusion / Rate of He effusion = √(Molar mass of He) / √(Molar mass of CO₂)

= 2.00 / 6.63 = 0.302

Therefore, the ratio of the rate of effusion of CO₂ to that of He is 0.302.

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Limonene is miscible in alcohol. This means that limonene will dissolve completely in alcohol, forming a homogenous mixture.

Limonene is a hydrophobic molecule and is soluble in a variety of organic solvents, including alcohols such as ethanol and methanol. Organic solvents are substances that contain carbon and are capable of dissolving or dispersing other substances that are also organic in nature. They are widely used in a variety of applications, including in the manufacturing of pharmaceuticals, cosmetics, paints, and coatings, as well as in cleaning and degreasing operations. Organic solvents can be classified into different types based on their chemical properties, such as polarity, boiling point, and reactivity.

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True. The regulation of the glomerular filtration rate is achieved through autoregulation. True. The renal autoregulation mechanism involves smooth muscles in the arterioles acting as stretch receptors, thus dilating or constricting the arteriole in response to changes in blood pressure.

True. The renal autoregulation involves macula denser cells sending signals to the juxtaglomerular cells to either constrict or dilate the arteriole. False. The tubuloglomerular feedback mechanism involves the macula denser cells detecting changes in the NaCl concentration in the filtrate and sending signals to the afferent arteriole to either constrict or dilate. True. The tubuloglomerular mechanism involves macula denser cells sending signals to the juxtaglomerular cells to either constrict or dilate the arteriole. Overall, the regulation of the glomerular filtration rate involves both autoregulation and tubuloglomerular feedback mechanisms. Autoregulation helps maintain a relatively constant glomerular filtration rate despite changes in systemic blood pressure, while tubuloglomerular feedback helps adjust the glomerular filtration rate in response to changes in the filtrate composition.

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We need to add 7.7 g of solid iron(II) nitrate to make a 0.172 M solution in 250 mL volumetric flask.

First, we can use molarity and volume of solution to find the number of moles of iron(II) nitrate needed:

moles of \(Fe(NO_3)_2\)= Molarity × Volume in liters

moles of \(Fe(NO_3)_2\) = 0.172 mol/L × 0.250 L = 0.043 mol

Next, we can use the molar mass of iron(II) nitrate to find the mass of the solid that needs to be added:

mass of \(Fe(NO_3)_2\) = moles of \(Fe(NO_3)_2\) × molar mass of \(Fe(NO_3)_2\)

mass of \(Fe(NO_3)_2\)= 0.043 mol × (55.85 g/mol + 2 × 14.01 g/mol + 6 × 16.00 g/mol)

mass of \(Fe(NO_3)_2\)= 0.043 mol × 179.86 g/mol = 7.7 g

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Answer:

The ionic compound NaCl has a Face Centered Cubic unit cell

The site for atoms are Face, center and Edges corner.

Effective number of atoms

Na+

1centers + 12edges x\(\frac{1}{4}\) = 4 Na+  

Cl-

6face x\(\frac{1}{2}\)  + \(\frac{1}{8}\) x8 corners = 4Cl-

This is just one unit cell effective atom, there are thousand's of such unit cells are combined to form one such structure of NaCl. The real formula of NaCl is Na4Cl4 but for simplicity we use empirical formula that is NaCl.

The term that refers to the attraction of water molecules to one another is "cohesion". The correct answer is option: b. cohesion.

Cohesion is a property of water molecules that arises from their polarity and hydrogen bonding. The oxygen atom in each water molecule is partially negative, while the hydrogen atoms are partially positive, creating a polar molecule. The polar nature of water allows the oxygen atoms in one molecule to form hydrogen bonds with the hydrogen atoms in nearby water molecules, resulting in a strong attraction between them. This cohesive property of water is responsible for many of its physical properties, such as surface tension and capillary action.  Option b is correct.

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Answer:

D: lose an electron

Explanation:

when an atom loses an electron it's positively charged and when it gain an electron it is negatively charged

Answer:

The one on the top,'' As the water cool, it is returned to the boiler where it is heated,''

Explanation:

During an elimination reaction in organic chemistry, a new double bond (π bond) is formed, resulting in the creation of an alkene functional group. This process involves the removal of a leaving group and the adjacent hydrogen atom from a molecule, resulting in the formation of a double bond between the two adjacent carbon atoms.

In elimination reactions, a strong base or acid is often used to abstract the proton from the adjacent carbon atom, generating a carbanion intermediate. The leaving group is then expelled from the molecule, and the carbanion intermediate undergoes a rearrangement to form a more stable carbocation. Finally, the base or another molecule acts as a nucleophile, capturing a proton from the carbocation to form the double bond. This newly formed double bond represents the alkene functional group and is characteristic of elimination reactions in organic chemistry.

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The expected product is (R)-2-bromobutane.

Stereochemistry plays a crucial role in determining the outcome of chemical reactions. In the given question, the stereochemistry of the intermediate I needs to be considered to determine the expected product.

The intermediate I indicates a chiral carbon center, denoted by an asterisk (*), which means it has four different substituents attached to it. This chiral carbon results in two possible stereoisomers: (R)-2-bromobutane and (S)-2-bromobutane.

When a reaction occurs at a chiral carbon, the stereochemistry of the reactant is usually retained in the product, assuming no racemization or inversion takes place during the reaction. In this case, the intermediate I has an (R) configuration, which implies that the product will also have an (R) configuration.

Therefore, the expected product is (R)-2-bromobutane.

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Answer:

because the salt will melt the egg shell because of whats in the salt

i tried i didnt really know the answer LOL

Explanation:

Answer:

0.04 M.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

Ba(OH)₂ + H₂SO₄ —> BaSO₄ + 2H₂O

From the balanced equation above,

The mole ratio of acid, H₂SO₄ (nₐ) = 1

The mole ratio of base, Ba(OH)₂ (n₆) = 1

Finally, we shall determine the molarity of Ba(OH)₂ solution. This can be obtained as follow:

Volume of base, Ba(OH)₂ (V₆) = 93.9 mL

Volume of acid, H₂SO₄ (Vₐ) = 15.3 mL

Molarity of acid, H₂SO₄ (Mₐ) = 0.247 M

Molarity of base, Ba(OH)₂ (M₆) =?

MₐVₐ / M₆V₆ = nₐ / n₆

0.247 × 15.3 / M₆ × 93.9 = 1/1

3.7791 / M₆ × 93.9 = 1

Cross multiply

M₆ × 93.9 = 3.7791

Divide both side by 93.9

M₆ = 3.7791 / 93.9

M₆ = 0.04 M

Therefore, the molarity of the Ba(OH)₂ solution is 0.04 M

In this type of reaction, a better reactive compound displaces the less reactive compound. For instance, zinc exists better reactive than hydrogen, therefore zinc will displace hydrogen.

The reaction, Zn + \(H_2SO_4\) →  \(ZnSO_4 + H_2\), exists an illustration of single replacement reaction. A single replacement reaction exists even comprehended as a displacement reaction.

The general structure of a displacement reaction exists:

A + BC → AC + B

In this type of reaction, a better reactive compound displaces the less reactive compound. For instance, zinc exists better reactive than hydrogen, therefore zinc will displace hydrogen.

This equation indicates the development of a chemical difference. When one molecule of zinc and one molecule of sulphuric acid responds it results in the exhibition of one molecule of zinc sulfate and one molecule of hydrogen.

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The answer can not be calculated because of lack of available information.

What is atomic mass?

The atomic mass of an element is the average mass of an atom of that element, based on the atomic masses of its isotopes and their relative abundances. The atomic mass of an element is typically expressed in atomic mass units (amu), which are defined as one-twelfth the mass of a carbon-12 atom. The atomic mass of an element is not the same as the mass of a single atom of that element. Instead, it is an average value that takes into account the relative abundances of the different isotopes of the element. The atomic mass of an element is important for understanding the properties of that element and for performing chemical calculations. The atomic mass of an element is used to determine the relative masses of atoms and molecules and is a key factor in determining the chemical behavior of an element.

According to the problem:

The relative atomic mass of Pivotium is the average atomic mass of the element, taking into account the relative abundances of its isotopes.

To calculate the relative atomic mass of Pivotium, the atomic mass of each isotope and the percentage of each isotope in the mixture has to be known.

According to the given information, the mixture contains 27% Pivotium-425 and 73% Pivotium-415.

Use the following formula to calculate the relative atomic mass of Pivotium:

Relative atomic mass of Pivotium = (percentage of Pivotium-425 * atomic mass of Pivotium-425) + (percentage of Pivotium-415 * atomic mass of Pivotium-415)

Since the atomic mass of Pivotium-425 and Pivotium-415 are unkown, this formula to calculate the relative atomic mass of Pivotium is of no use. However, this formula shows how the relative atomic mass of an element is calculated based on the atomic masses of its isotopes and their relative abundances.

It's important to note that the relative atomic mass of an element is a weighted average of the atomic masses of its isotopes, taking into account the relative abundances of each isotope in the element. The relative atomic mass is a measure of the average mass of the atoms in an element and is used to determine the atomic mass of an element in chemical calculations.

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Answer:

Option 2 or B

Explanation:

The base is partially dissociating into products.

HAVE A GREAT DAT STAY SAFE!

The correct answer is: The base is not dissociating into any ions.

When the position of equilibrium lies to the left, it means that the equilibrium favors the formation of the reactants rather than the products. In the context of a base being added to water, it implies that the base does not dissociate significantly into ions or dissociates only to a small extent.

When a base is added to water, it can undergo a process called ionization or dissociation, where it breaks apart into ions. In the case of a strong base, such as sodium hydroxide (NaOH), it completely dissociates into its constituent ions (Na+ and OH-) in water. This means that all the base molecules break apart, and a high concentration of ions is present in the solution.

However, if the base is weak or the equilibrium lies to the left, the base molecules do not dissociate significantly into ions. This can be due to factors such as the nature of the base or the conditions of the reaction. In such cases, only a small fraction of the base molecules dissociate into ions, and the concentration of ions in the solution is relatively low.

Therefore, when the position of equilibrium lies to the left, it indicates that the base is not dissociating into any ions or is dissociating only to a small extent. The base remains mostly in its molecular form and is present in the solution in relatively small amounts.

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Answer:

Hope I helped

Explanation:

The main topics in chemistry include acids and bases, atomic structure, the periodic table, chemical bonds, and chemical reactions.

The equation relates the mass of the object, m, and the length of the spring, s is option b  0.3m.

As per the given statement, The length of a spring varies directly with the mass of an object that is attached to it. When a 30-gram object is attached, the spring stretches 9 centimeters.

Therefore, the equation that relates the mass of the object, m, and the length of the spring, s is given as:s = kmHere, k is the constant of variationWe know that when a 30-gram object is attached, the spring stretches 9 centimeters.

Therefore, s = 9 and m = 30We can now write the above equation as follows:9 = k * 30or k = 9/30= 0.3Thus, the equation relating the mass of the object, m, and the length of the spring, s is s = 0.3m.Answer: option b s = 0.3m

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