A metal which is expensive and used to make ornaments.​

No, isn't. NADH (nicotinamide adenine dinucleotide) is not the final electron acceptor in cellular respiration.

In the final stage of cellular respiration, the electron transport chain uses a series of electron carriers to transfer electrons from NADH and FADH2 to the final electron acceptor, which is oxygen (O2). The energy from these electrons is used to pump protons across a membrane, creating a proton gradient that drives the production of ATP through ATP synthase.

If you want to obtain the final electron acceptor in cellular respiration, you would need to provide an alternative electron acceptor in the electron transport chain. The most common final electron acceptors used in cellular respiration are oxygen (O2) in aerobes and non-oxygen compounds such as nitrate (NO3-), sulfur (S), or carbon dioxide (CO2) in anaerobes.

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Calcium phosphate can be converted into phosphorus using the following reaction: 6CaSiO3-(aq) + 2Ca3(PO4)2(s) = 6SiO2(s) + 10C(s).

Thus, the amount of moles for phosphorus is equal to the quantity of phosphorous divided by its molar mass. Now divide the molarity of phosphorus, which is 31 g each mole and weighs 114.95 g. Graham and this crime should cancel each other out. And after solving, 3.71 malls result.

You need to know the product's mass and its molarity (h t), which corresponds to the mass with one mole of the product, in order to determine the moles of the a substance.

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The mass of carbondioxide that will be produced from the reaction of 37.5g of C₂H₆ is 110 grams.

Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, ethane reacts with oxygen to produce carbondioxide and water as follows:

2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

Based on the above reaction, 2 moles of ethane produces 4 moles of carbondioxide

37.5g of ethane = 1.25moles of ethane

moles of carbondioxide = (1.25 × 4) ÷ 2 = 2.5 moles

mass of carbondioxide = 2.5mol × 44g/mol = 110grams of carbondioxide.

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NO and NO₂ are the free radicals.

The species which is having unpaired as well as odd number of electrons will be considered as a free radical. If the number comes out to be odd, the concerned species will be considered as a free radical. In case of NO₂, the total number of electrons is 23 (7 from nitrogen and 16 from two oxygen atoms) and in case of NO the total  number of electrons is 15 (7 from nitrogen and 8 from oxygen).  Hence, the species are free radical.

Whereas, in case of [tex]ClO3^{-}[/tex], the  total  number of electrons is 42 (17 from chlorine and 24 from three oxygen and +1 for negative charge) and in case of [tex]NO2^{-}[/tex]the total number of electrons is 24 (7 from nitrogen and 16 from oxygen and +1 for negative charge) There are even no.  of electrons. Hence the [tex]ClO3^{-}[/tex] and [tex]NO2^{-}[/tex] are not a free radical.

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The half-life of sodium-25 is 237 seconds.

The half-life of a radioactive substance is the amount of time it takes for half of the initial amount of the substance to decay. In this case, 1.00 gram of a 16.00-gram sample of sodium-25 remains unchanged after 237 seconds, which means that half of the initial sample has decayed in that amount of time.

Therefore, the half-life of sodium-25 is 237 seconds. It's worth mentioning that the half-life of radioactive isotopes can vary depending on the element and the specific isotope. Also, the half-life of a radioactive element is an important factor in the safe handling and disposal of nuclear waste, because it determines how long the radioactive material remains dangerous.

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The correct IUPAC name for the given compound is C. 4-t-isopropyl-5-isobutylnonanedioic acid.

A compound is a material that results from the chemical bonding of two or more elements. The elements contained in mixes are not chemically linked to one another.

Ionic and covalent bonds are the two most frequent forms of bonding that hold components together in compounds.

It is important to note that IUPAC nomenclature is a systematic method for naming organic compounds and it has a set of rules and guidelines to follow.

It is best to use a software or an online tool to get the IUPAC name of a compound as it can be complex and time-consuming task to do by hand.

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Answer:

The pressure of the gas when the temperature drops to 65°C is 133 Torr.

Explanation:

Please let me know if this helped!!!

Pair of each atom that has a greater electronegativity a) Ga, b) O, c) Cl, d) Br, e) Sr.

On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group. As a result, the most electronegative elements are found on the top right of the periodic table, while the least electronegative elements are found on the bottom left.

The electrons with negative charges are drawn to the positive charge protons in the nucleus.The electronegativity / attraction will rise with the amount of protons present in the nucleus.

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The coefficient that would be in the front of NaCl will be 2.

The normal balanced equation of reaction between sodium (Na) and chlorine molecule (Cl2) is as follows:

[tex]2Na + Cl_2 --- > 2NaCl[/tex]

Thus 2 moles of Na is required to completely react with 1 mole of [tex]Cl_2[/tex] to produce 1 mole of NaCl.

In the reaction depicted reaction 4 moles of Na and 12 moles of [tex]Cl_2[/tex] were made available for the production of NaCl. However, the mole ratio for a complete reaction is 2 moles of Na to 1 mole of NaCl.

2 moles Na = 1 mole NaCl

4 moles Na = 4x1/2 = 2 moles NaCl

This means that the coefficient of NaCl in the equation should be 2.

However, there is a catch. The [tex]Cl_2[/tex] seems to be in excess.

2 moles Na = 1 mole of [tex]Cl_2[/tex]

4 moles Na = 4x1/2

                   = 2 moles of [tex]Cl_2[/tex]

This means about 6 moles of [tex]Cl_2[/tex] will be in excess.

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4Na + 8Cl2 ---------> ? NaCl

What is the coefficient that belongs in front of NaCl?

To find partial pressure from mole fraction, we have to multiply mole fraction with total pressure in the event.

Partial pressure is a result of multiplying of mole fraction and total pressure or in formula it is written as Pfraction = molefraction x Ptotal. To make it easief for you to understand, let's see the example below:

Let say we have a room with 24.2 g of He and 4.32 g of O2 at 2.611 atm pressure. In this case, before we calculate the partial pressure we have to calculate the mole fraction

24.2 g Neon x 1 mol Neon / 20.18 g Neon = 1.199 mol Neon

4.32 g Oxygen x 1 mol Oxygen / 31.998 g O2 = 0.135 mol Oxygen.

Total moles =  1.199 x 0.135 = 1.334 mol gas

Mole fraction Ne = 1.199 mol/1.334 mol = 0.899

Mole fraction O₂ = Oxygen: 0.135/1.334 = .101

Then find the partial pressure

PNe = mole fraction Ne x Ptot = 0.899 x 2.611 atm = 2.35 atm

PO2 = mole fraction O ₂ x Ptot = 0.101 x 2.611 atm = 0.264 atm

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Answer: 1. Double replacement. 2. Combustion. 3. Single replacement. 4. Synthesis. 5. Decomposition

Explanation:

1. One of the parts of each of the reactants is swapped 2. Carbon dioxide and water are always produced in combustion. 3. One is swapped. 4. Two different things combine to make a single thing. 5. One single thing decomposes to make two different things.

the best Lewis structure for CH3CH(CH3)CH2C(CH2CH3)2CHO, a neutral molecule has been shown in the image

A Lewis Structure is a very simple example of a molecule's valence shell electrons. It is used to depict how electrons in a molecule are set up around individual atoms. Gilbert N. Lewis, who introduced the Lewis structure in his 1916 article The Atom and the Molecule, was decided to name after it. Lewis structures broaden on the electron dot diagram notion by trying to add routes among atoms to portray shared pairs in a chemical bond. The Lewis Symbol is generated by putting dots chosen to represent electrons in the external energy around the element symbol.

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The net ionic equation of the reaction of AgNO₃ and CaCl₂:

Ag⁺ (aq)  + Cl⁻ (aq)  →  AgCl (s)

The net ionic equation can be described as an equation that represents only those elements, ions, that directly contributed to that chemical reaction.

We can write a chemical equation for the formation of AgCl:

2 AgNO₃ + CaCl₂ → 2 AgCl (s) + Ca(NO₃)₂

The complete ionic equation can be written for the above reaction is:

2 Ag⁺ (aq) + 2 NO₃⁻ (aq)  + Ca²⁺ (aq) + 2 Cl⁻  → 2 AgCl (s) + Ca²⁺ (aq) + 2NO₃⁻ (aq)

In the ionic equation, the calcium and nitrate ions appear unchanged on both sides of the equation. When we mix the two solutions, neither the calcium nor nitrate ions participate in the reaction. So calcium and nitrate ions can be eliminated from the ionic equation.

Ag⁺ (aq)  + Cl⁻ (aq)  →  AgCl (s)

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The process in which a solution of known concentration is used to determine the concentration of an unknown solution is called titration

Titration is a method used to determine the concentration of an unknown solution by measuring the volume of a solution of known concentration that is needed to react with a specific amount of the unknown solution.

There are different types of titrations, each with its own specific endpoint, depending on the type of reaction taking place. For example, acid-base titrations use an indicator to signal the endpoint, while redox titrations use an electrode or a color change to signal the endpoint.

Therefore, Titrations are commonly used in laboratories to determine the concentration of a wide variety of substances, such as acids, bases, and electrolytes in a solution. They are also used in industries such as food, pharmaceuticals and environmental analysis.

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The section of the periodic table in Figure 1 that is most likely to contain element R is section A.

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The number of molecules or the number of atoms that the oxygen has has is 9.6 * 10^22 molecules/ atoms.

We have to note that the number of the molecules of the oxygen that we have can be obtained by the use of the hypothesis that have been put forward by Avogadro.

We know that;

22.4 L of oxygen is contained in one mole of oxygen

3.5 L of oxygen would contain 3.5 * 1/22.4

= 0.16 moles of oxygen

If 1 mole of oxygen contains 6.02 * 10^23 molecules /atoms

0.16 moles of oxygen would contain 0.16 *  6.02 * 10^23/1

=9.6 * 10^22 molecules/ atoms

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Missing parts;

How many molecules of O2 are in a 3.5-liter container? How many atoms?

The type of the soil that can retain the greatest amount of the water is the one that has high prosperity. The clay soil has retain the mor amount of the water.

The porosity means the space in between the soil particles, that will filled with air or the water. The clay soil has the large pore space , that means it can retain the greatest amount of the water. The clay soil has the greatest water holding capacity. The clay soil has the high porosity and least permeable.

Thus, the soil which can retain the greatest amount of the water is the soil with the high porosity.

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Answer:

Convection 

is the movement of heat by a fluid such as water or air. The fluid (liquid or gas) moves from one location to another, transferring heat along with it. This movement of a mass of heated water or air is called a current. Radiation is the transfer of heat by electromagnetic waves.

The textbook has a stronger attraction to Earth.

OPtion B is correct

As objects fall to the ground, gravity accelerates their descent. Acceleration is a change in velocity, while velocity is a measurement of the speed and direction of motion. Due to gravity, objects fall, and the further they fall, the faster they fall.

The pencil has a momentum greater than zero, whereas the textbook has zero momentum because it has no velocity.

Not having zero gravity

Contrary to common belief, there is no such thing as zero gravity. Weightlessness and zero gravity are two different ideas. The earth's gravity maintains the moon's orbit.

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The gas will occupy 0.2624 L at 34.0 [tex]^oC[/tex] and 0.922 atm pressure.

For an ideal gas:

PV = nRT

Where P is the pressure of the gas, V is the volume of the gas, R is the ideal gas constant, and T is the temperature in kelvin.

In this case:

P = 0.922 atm

V is what we are looking for

n = 0.00961 mol

R = 0.082 L atm.mol−1⋅K−1

T = 34 + 273 = 307 kelvin

Making V the subject of the formula:

V = nRT/P

  = 0.00961 x 0.082 x 307/0.922

  = 0.2624 L

In other words, the volume that the oxygen will occupy would be 0.2624 L.

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Potential Energy stored in bond of molecules is called chemical energy.

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A sea breeze occurs at the coast of oceans and other large water bodies during sunny days.

The term sea breeze defined as it describes a wind that blows from the ocean inland towards land. In daytime, the land surface heats up faster than the water surface.

The sea breeze occurs mostly in the spring and summer months because of the higher temperature differences between the ocean and nearby land, mostly in the afternoon when the land is at more heating from the sun.

Thus, A sea breeze occurs at the coast of oceans and other large water bodies during sunny days.

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Complete this table for the H₂O :

a. T=143.61 °C , saturated mixture

b. p = 2319.6 kpa . u, kJ/kg = 2601.30

c. u, kJ/kg = 806.00, compressed liquid

d. T = 450 °C , superheated vapor

The complete table for the H₂O is as :

T [°C]      p [kpa]          u [kJ/kg]             phase description

143.61      400               1450                     Saturated mixture

220          2319.6           2601.30               Saturated vapor

190           2500             806.00               Compressed liquid

450          4000             3040                  Superheated vapor

The compressed liquid is also called as a sub cool liquid, that means the substance that not about to vaporized. The super heated vapor is. the steam at the temperature higher than the vaporization point at absolute pressure.

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According to the claim, one benefit of food processing is its capacity to lessen the growth of dangerous germs, which in turn prolongs the shelf life of food.

Thus, Extended Shelf Life: Perishable goods can have their shelf lives extended by using food processing procedures like canning, freezing, or adding preservatives. Customers may now preserve and enjoy these items for longer periods of time without worrying about them going bad.

Improved Food Safety: Food processing aids in lowering the risk of foodborne illnesses by employing chemicals and processing techniques that stop the growth of dangerous germs.

Thus, According to the claim, one benefit of food processing is its capacity to lessen the growth of dangerous germs, which in turn prolongs the shelf life of food.

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The digestive tract lining is made up of a variety of different cell types.

These cells include absorptive cells, which absorb nutrients from the food we eat, goblet cells, which secrete mucus to protect the digestive tract, enteroendocrine cells, which produce hormones to regulate digestion, and brush border cells, which help break down food particles.

All of these cell types work together to ensure that the digestive process runs smoothly and efficiently.

The digestive tract is lined with a type of cell known as epithelial cells. These cells are responsible for protecting the internal organs in the digestive system, absorbing nutrients, and secreting digestive enzymes. Epithelial cells also help to regulate the passage of fluids and electrolytes in and out of the body.

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Option C ; At any of an infinite number of distances, depending on its energy .

Bohr described the Hydrogen atoms in terms of an electron moving in a circular route about a nexus. He supposed that the electron was confined to certain pathways characterized by separate powers.It explains the emigration and absorption spreads of atomic hydrogen and hydrogen- suchlike ions with low atomic numbers. It was the first model to introduce the generality of a quantum number to describe atomic countries and to postulate quantization of electron pathways in the tittles. Bohr’s model is an important step in the development of quantum mechanics, which deals with multitudinous- electron particles. It was the first model to introduce the conception of a amount number to describe infinitesimal countries and to hypothecate quantization of electron routeways in the snippet. Bohr’s model is an important step in the development of amount mechanics, which deals with numerous- electron tittles.

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According to question the pressure of the gas is 4.45 atm.

Pressure is a physical force exerted on a surface by an object or a liquid. It is measured in units of force per unit area, such as pounds per square inch (psi) or pascals (Pa). Pressure is created when a force is applied to an object, causing it to compress or expand.

The pressure of the gas can be calculated using the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

To calculate the pressure, we first need to calculate the number of moles of CO₂ gas in the container. We can do this by using the molar mass of CO₂, which is 44.01 g/mol.
n = (78.1 g CO₂) / (44.01 g/mol) = 1.77 mol
Now that we have the number of moles, we can calculate the pressure using the ideal gas law.
P = (1.77 mol)(0.0821 L·atm/K·mol)(273 K) / (48.0 L)
P = 4.45 atm

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C. nonpolar covalent is the nature of C-Cl bond in the compound CCl4 having (Electronegativity: C-2.5, C-3,0).

A covalent bond is a chemical bond formed by the sharing of electrons between two atoms. The bond between C and Cl in CCl4 is a covalent bond. The electronegativity difference between C and Cl is small (EN C = 2.5 and EN Cl = 3.0), indicating that the bond is nonpolar covalent. In a nonpolar covalent bond, the electrons are shared equally between the atoms, and there is no separation of charge. The atoms have the same pull on the electrons, meaning that the electrons are shared equally between the atoms. In this case, the bond between C and Cl is nonpolar covalent because the electronegativity of C and Cl are similar, and the electrons are shared equally. Therefore, the bond is not polarized and there is no separation of charge. To sum up, C-Cl bond in CCl4 is not ionic and not polar covalent, it is a nonpolar covalent bond.

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% yield if 4 moles of hydrogen react with 3 moles of oxygen to form 3 moles of water (H2 + 1/2 O2 -> H2O). a. 25%.

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