Why does sucrose only exist as a disaccharide?

The purpose of the preparatory reaction is to break down pyruvate (C₃H₃O₃) into acetyl CoA (C₂H₃OCoA) so it can enter the citric acid cycle.

During cellular respiration, the preparatory reaction, also known as pyruvate decarboxylation, occurs in the mitochondria. Its purpose is to convert the three-carbon pyruvate molecule (C₃H₃O₃) produced during glycolysis into a two-carbon acetyl CoA (C₂H₃OCoA) molecule.

The preparatory reaction involves the removal of one carbon dioxide molecule (CO₂) from pyruvate, which results in the formation of acetyl CoA. Additionally, a high-energy electron carrier molecule called NADH is produced during this process.

The resulting acetyl CoA molecule serves as the entry point for the citric acid cycle, also known as the Krebs cycle or TCA cycle. In the citric acid cycle, acetyl CoA combines with a four-carbon molecule to form a six-carbon compound, initiating a series of enzymatic reactions that ultimately lead to the production of ATP, high-energy electron carriers (NADH and FADH₂), and carbon dioxide (CO₂).

Thus, the preparatory reaction is a crucial step in cellular respiration, allowing the efficient utilization of pyruvate and the subsequent production of energy through the citric acid cycle.

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The mass of magnesium cyanide needed to prepare the solution is 1.57 g

We'll begin by calculating the number of mole of Mg(CN)₂. This can be obtained as follow:

Volume = 275 mL = 275 / 1000 = 0.275 L

Molarity of Mg(CN)₂ = 0.075 M

Mole = Molarity x Volume

Mole of Mg(CN)₂ = 0.075 × 0.275

Mole of Mg(CN)₂ = 0.020625 mole

Mole of Mg(CN)₂ = 0.020625 mole

Molar mass of Mg(CN)₂ = 24 + 2(12 + 14) = 76 g/mol

Mass = mole × molar mass

Mass of Mg(CN)₂ = 0.020625 × 76

Mass of Mg(CN)₂ = 1.57 g

Therefore, 1.57 g of Mg(CN)₂ is needed to prepare the solution

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Answer:

it's A) or E)

others are not suitable cuz their melting point is weak.

Answer:

Gallium

Explanation:

Because the melting point is low and the drinks are usually around 60-70 degrees Celsius so it wil melt

The chemical reaction through which a molecule of sucrose is broken down into its monomers (glucose and fructose) is an example of:

\(Sucrose + H_{2} O -- > glucose + fructose\)

What is chemical reaction?

However, A chemical change occurs while the candle burns in the demonstration.

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Answer:

Chemical energy.

Explanation:

This is biology btw, not chemistry

Answer:

classification enables scientists to explain the relationships between organisms, which is helpful in trying to reconstruct the evolutionary roots of a particular species. Finally, taxonomic names provide unique descriptive names for organisms. This is sometimes an issue with common names of animals.

Explanation:

Found in the Internet

Answer:

A. Some of the broken tablet was not added to the water.

B. The tablet was not crushed enough to make a substantial difference.

D. The tablets were not uniform in their mass.

(Photo for proof below.)

Explanation:

All of these things affect the reaction rate of the tablet. Not adding all of the broken tablet will likely slow down the reaction rate. Not crushing the tablet enough may also affect the reaction rate because of surface area. Crushing the tablet more will increase its surface area, since more surface of the tablet is created. This will increase the reaction rate because more exposed area will react with the combined substance. Tablets not being having the same mass may speed up or slow down the reaction rate, depending on whether the tablet is bigger or smaller, since there is more or less of the tablet to dissolve.

Incase you're doubtful of my answers. Here's proof it's on Edge.

The possible sources of the error obtained in the results of different students are ; Some of the broken tablet was not added to the water, The tablet was not crushed enough to make a substantial difference, The tablets were not uniform in their mass.Hence The correct options are (A), (B) and (D)

(Image for correct answer is attached with the answer for reference)

Experimental error is the difference between a measured value and its true value. In other words, it is the inaccuracy or inaccuracies that stop us from seeing an absolutely correct measurement.

Experimental error is very common and is to some degree inherent in every measurement.

Therefore, The possible sources of the error obtained in the results of different students are ; Some of the broken tablet was not added to the water, The tablet was not crushed enough to make a substantial difference, The tablets were not uniform in their mass.Hence The correct options are (A), (B) and (D)

(Image for correct answer is attached with the answer for reference)

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The Rutherford's model lacks an atom's electrical structure and electromagnetic radiation.

According to the idea, an atom has a tiny, compact, positively charged center called a nucleus, where almost all of the mass is concentrated, while light, negatively charged particles called Like planets circle the Sun, electrons also travel a great distance around it. Rutherford discovered that an atom's interior is mostly empty.

Rutherford's alpha scattering experiment did not come to any conclusions on how quickly positively charged particles travel. The nucleus, or core, of the atom contains the positively charged particles.

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Answer:

32.1

Explanation:

The number below the element Sulfur is 32.06, which if rounded to the nearest 10th is 32.1.

The volume in liters of a 1.0 mol/L aluminum chloride solution that contains 175. g of aluminum chloride (AICI3). is 0.93 L.

calculation:-

mass of AlCl3 = 175 g

moles of AlCl3 = mass / molar mass

= 175 g / 133.34 g/mol

= 0.938 mol

and we have a concentration of the solution

molarity = moles/volume (liter)

volume = 0.938 mol / 1.0 mol/L

= 0.93 L

Aluminum chloride is widely used in the production of rubber lubricants wood preservatives and paints. Used in pesticides and pharmaceuticals. As a flux when melting aluminum. Used as an antiperspirant. Aluminum chloride is corrosive and irritating to eyes skin and mucous membranes. May be harmful if swallowed.

Consuming large amounts can lead to phosphate deficiency. In human skin irritation studies, intermittent exposure of 6 days or more was given a mild rating. Aluminum chloride hexahydrate is an antiperspirant that acts on sweat cells. Topical aluminum chloride hexahydrate is used to treat excessive sweating also called hyperhidrosis.

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The time taken for the same volume of methane gas to diffuse is 7.1 s.

The rate at which a given mass of diffuses is inversely proportional to the molar mass of the gas.

\(\frac{t_2}{t_1} = \sqrt{\frac{M_2}{M_1} }\)

where;

\(\frac{t_2}{t_1} = \sqrt{\frac{M_2}{M_1} }\\\\\frac{t_2}{20} = \sqrt{\frac{2}{16} }\\\\\frac{t_2}{20} = \frac{\sqrt{2} }{4} \\\\t_2 = \frac{20\sqrt{2} }{4} \\\\t_2 = 5\sqrt{2} \\\\t_2 = 7.1 \ s\)

Thus, the time taken for the same volume of methane gas to diffuse is 7.1 s.

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The time it takes for hydrogen to diffuse is 7.07 seconds

To calculate the time it will take hydrogen gas to diffuse, we use the formula from Graham's law of diffusion.

Formula:

Where:

Make T the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The time it takes for hydrogen to diffuse is 7.07 seconds.

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The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.

The electrochemical cell is the cell that is capable of generating the electrical energy from the chemical reactions or by the use of the electrical energy to cause the chemical reaction. The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.  

There are the two types of the electrochemical cells is as follows : the galvanic called the electrolytic cells. the galvanic cell is also called as the voltaic cell.

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Explanation:

The given molecule is

H3C - C ≡ C - CH3

The numbering order is shown below:

H3C - C ≡ C - CH3

    1     2     3     4

So, the alkyne group is in the second position.

The carbon chain has four carbons.

Hence, the IUPAC name of the given compound is:

2-butyne.

The volume that is needed is 173 mL of KOH solution is needed to prepare this buffer.

The reaction between acetic acid (CH₃COOH) and KOH can be written as follows.

CH₃COOH +  KOH ------------->  CH₃COOK +  H₂O

CH3COOH is a weak acid and CH₃COOK is its strong salt, therefore together they make a buffer system.

Let's say we add "x" moles of base KOH . Let's draw ICE table to find out moles at equilibrium

Initial moles of CH₃COOH are 0.654 mol/L * 625 mL * 1 L / 1000 mL = 0.40875 mol

 CH3COOH KOH CH3COOK H2O

I 0.40875 x 0 -

C -x -x +x -

E 0.40875 - x  0 x  

At equilibrium, we have 0.40875 - x moles of acid and x moles of its conjugate base.

Let's use Henderson Hasselbalch equation to solve for x.

pH = pKa +  log  ( base/ acid)

the required pH is 5.87 and pKa is given as 4.76

5.87 = 4.76 + log ( x / 0.40875 - x )

5.87 - 4.76 = log ( x / 0.40875 - x )

1.11 = log ( x / 0.40875 - x )

10¹°¹¹ =  ( x / 0.40875 - x )

12.88 = x / 0.40875 - x

12.88 ( 0.40875 - x ) =  x

5.266 - 12.88 x =  x

5.266 = 13.88 x

x = 5.266 / 13.88

x = 0.379

From ICE table, we know that x is moles of KOH

Molarity of KOH is given as 2.19M

Molarity = moles of KOH / liters

2.19 = 0.379 / Liters

Liters of KOH = 0.379 / 2.19

Liters of KOH = 0.173 L

173 mL of KOH solution is needed to prepare this buffer.

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40 Ne has 10 electrons which consist of 10 protons and 10 neutrons

Neon is a chemical element which is rare gas or noble gas as it has a stable octet electronic configuration, meaning it has 8 valence electrons in its outermost shell.

Neon belongs to group 0/VIII and period 1 of the periodic table.

An element is a substance which takes part in a chemical reaction. There are different classes of elements which includes the metals, nonmetals and the metalloids.

So therefore, 40 Ne has 10 electrons which consist of 10 protons and 10 neutrons.

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Answer:

Here is my answer. check it out

Answer:

B.) 1s²2s²2p⁶3s²3p³

Explanation:

The highest energy orbital that elements in the third period occupy is either 3s or 3p. Because there are 5 electrons, the 3s orbital is completely filled (with 2 electrons) and the 3p orbital is half-filled (with 3 electrons).

Water has a density of 1.0 g/mL. A plastic cup floats when it is placed into a container of water as it is less denser than water.

Density is a key notion in physics and material science that quantifies how tightly packed a substance's particles or molecules are within a certain volume. It is a measure of the mass contained in a certain amount of space that gives useful information about the properties of various materials.

It is vital to highlight that density is a material attribute that remains constant regardless of sample size. A little piece of iron, for example, has the same density as a huge iron block, despite the larger block having more mass.

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The correct chemical formula for diphosphorous pentoxide is P4O10. This compound consists of four phosphorus atoms (P) and ten oxygen atoms (O), resulting in the mentioned formula. It is a white solid substance with a strong affinity for water, and is commonly used as a desiccant and in chemical reactions.

The correct chemical formula for diphosphorus pentoxide is P2O5. This compound is formed by the combination of two atoms of phosphorus and five atoms of oxygen, giving it the molecular formula of P2O5. It is commonly used in the chemical industry as a dehydrating agent and as a raw material for the production of phosphoric acid. Diphosphorus pentoxide is a white, crystalline solid that is highly reactive with water and acids. When it comes into contact with water, it releases a large amount of heat, making it a useful desiccant in chemical reactions that require the removal of water.
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answer. Well I have no idea what the picture is but I would guess the answer is 5 Celsius because 5 Celsius equals 41 Fahrenheit which is about 10 degrees warmer than freezing lvl which is 32 degrees Fahrenheit.

The pH of a 0.0000001 Molar HCl solution is 7.

Since HCl is a strong acid, it dissociates completely in water to form H+ and Cl- ions.

The concentration of H+ ions in the solution will be equal to the concentration of the HCl, which is 0.0000001 Molar.

Using the pH scale, we can calculate the pH of this solution as follows:pH = -log [H+]pH = -log 0.0000001pH = 7

The pH of the solution is 7, which is neutral.

The pH of a 0.0450 Molar Ba(OH)2 solution is 12.

Since Ba(OH)2 is a strong base, it dissociates completely in water to form Ba2+ and OH- ions.

The concentration of OH- ions in the solution will be twice the concentration of Ba(OH)2, which is 0.0450 Molar.

Using the pH scale, we can calculate the pH of this solution as follows:pOH = -log [OH-]pOH = -log (2 x 0.0450)pOH = 1.34pH + pOH = 14pH = 14 - 1.34pH = 12.66

The pH of the solution is 12.66, which is basic.

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Answer:

See explanation

Explanation:

In considering the sustainability of the two processes, we must remember that fermentation involves the use of sugars as raw materials. These sugars are grown naturally as plants from which sugars are extracted for the fermentation process. This is a sustainable process because sugar is a renewable resource.

On the other hand, ethene is produced from the cracking of fractions obtained from distillation of natural gas and oil. Natural gas and oil are not renewable resources hence the process is not sustainable. The cracking of ethene requires a lot of energy compared to the fermentation of sugar.

As regards atom economy, the cracking of ethene, C2H4(g) + H2O(g) ------> C2H5OH(g) has a better atom economy compared to the fermentation of sugar; C6H12O6(aq) -------> 2C2H5OH(aq) + 2CO2(g).

Atom economy has to do with the process of designing reactions in such a way that atoms which are in the starting materials end up in the final product and not as waste materials.

Fermentation produces a waste material which is CO2 while the cracking of ethene produces no waste material. All atoms of the reactants are converted into atoms of products.

Hence, the cracking of ethene displays 100% atom economy. This implies that all reactant atoms are found in the desired product.

Answer:

97.9

Explanation:

m= n*M

M CaCl2= 40+ 35.5*2= 110

m= 0.89*110= 97.9

The mass of the given mole of \(CaCl_2\) is required.

The mass of the given compound is 98.78 g.

Molar mass of \(CaCl_2\)

\(M=40.078+35.453\times 2=110.984\ \text{g/mol}\)

n = Number of moles = 0.89 mol

Mass is given by

\(m=Mn\\\Rightarrow m=110.984\times 0.89\\\Rightarrow m=98.78\ \text{g}\)

The mass of the given compound is 98.78 g.

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Answer:

False

Explanation:

ok?

1)

methyl

CH3 (mol)

CH3- (struc)

2)

ethyl

C2H5

CH3-CH2-

3)

propyl

C3H7

CH3-CH2-CH2-

4)

butyl

C4H9

CH3-CH2-CH2-CH2-

5)

pentyl

C5H11

CH3-CH2-CH2-CH2-CH2-

6)

hexyl

C6H13

CH3-CH2-CH2-CH2-CH2-CH2-

7)

heptyl

C7H15

CH3-CH2-CH2-CH2-CH2-CH2-CH2-

8)

octyl

C8H17

i will stop writing the condensed formula ust add another CH2

9)

nonyl

C9H19

10)

decyl

C10H21

11)

Undecyl

C11H23

12)

dodecyl

C12H25

Particles in a gas are well separated with no regular arrangement; liquid are close together with no regular arrangement and solid are tightly packed, usually in a regular pattern.

The arrangement of atoms  inside a particle is known as the sub-atomic construction. The sub-atomic design fluctuates relying on which iotas are in the particle and how the various molecules have fortified together.

Solids, have firmly pressed particles. The firmly pressed course of action makes solids have characterized shapes. The strong condition of issue has the most minimal energy contrasted with similar substance in the other two states. To soften a strong, you need to add heat.

The between sub-atomic powers between particles in fluid decide properties like thickness and surface strain. Particles in a fluid are higher in energy than the strong state.

Gases have particles that are extremely far away from one another. The game plan of particles in a gas is the reason gases will grow to occupy anything that space they possess. Contrasted with solids and fluids, gases have the most active energy and the most fragile entomb sub-atomic cooperations. On the off chance that you keep adding heat, the particles will ionize.

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Answer:

4,768.57

Explanation:

If you are asking us to calculate, your answer is above. Easiest and fastest way is to plug it into the calc.