Kreb's cycle or citric acid cycle is the process in which CO₂ is released as a by-product of oxidation-reduction reactions.
We all know that the by-product of respiration is CO₂. The CO₂ is actually a by-product of an oxidation-reduction reaction that occurs in the mitochondria of all eukaryotic cells called the Kreb's cycle.
The Kreb's cycle is also called the citric acid cycle because the first product is usually citric acid. It is the second stage in cellular respiration, and is also called the aerobic stage, as it requires oxygen to occur. Since it requires oxygen, anaerobic organisms do not engage in the Kreb's cycle.
During glycolysis, one glucose molecule is broken down to give two pyruvate molecules, which concludes the first stage of cellular respiration. The pyruvate molecule is then taken to the matrix of the mitochondria, where the Kreb's cycle occurs and is decarboxylated to give CoA. Certain enzymes then break down the CoA to give two molecules of CO₂ as a by-product and one molecule of H₂O.
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For the following electronic configuration of neutral atoms, [ne]3s23p5 , what is the element and the number of unpaired electrons in its ground state?
The number of unpaired electrons is 7.
What is unpaired electrons?When an electron resides in the orbital of an atom in chemistry, it is said to be unpaired if it is not a part of an electron pair. Each of an atom's atomic orbitals is large enough to accommodate two electrons with opposite spins.
This electron configuration is known as the noble gas configuration because the core electrons in it are represented by the noble gases that have the appropriate number of electrons.
According to the electron configuration, the atom has 7 more electrons than neon. As a result, the atom is chlorine.
Unpaired electrons are the ones that appear in an orbital alone, whereas paired electrons are the ones that appear in an orbital as pairs in an atom.
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The number of unpaired electrons is 7. The element is Chlorine.
What is unpaired electrons?An unpaired electron is an electron that doesn't form part of an electron pair when it occupies an atom's orbital in chemistry.
Two electrons with opposing spins can fit into each of an atom's atomic orbitals.Because the noble gases that match to the right amount of electrons represent the core electrons in this electron configuration, it is known as the noble gas configuration.
The atom possesses 7 more electrons than neon, according to the electron configuration. The atom is chlorine as a result.
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Which electron configuration is correct for a ca 2 ion?
a. 1s22s22p63s23p1
b. 1s22s22p63s23p64s24p6
c. 1s22s22p63s23p64s2
d. 1s22s22p63s2
e. 1s22s22p63s23p6
The correct answer for electron configuration of a Ca2+ ion is e. 1s22s22p63s23p6 which is isoelectronic with the noble gas argon.
Isoelectronicity is a phenomenon determined whilst or greater molecules have equal structure (positions and connectivities amongst atoms) and equal digital configurations, however, range through what particular factors are at positive places withinside the structure.
This definition is on occasion termed valence isoelectronic. Definitions can on occasion be now no longer as strict, on occasion requiring identification of the full electron matter and with it the whole digital configuration.[2] More usually, definitions are broader and can enlarge to permit one-of-a-kind numbers of atoms withinside the species being compared.[3]
The significance of the idea lies in figuring out considerably associated species, as pairs or series. Isoelectronic species may be anticipated to reveal beneficial consistency and predictability of their houses, so figuring out a compound as isoelectronic with one already characterized gives clues to feasible houses and reactions (Differences in houses which includes electronegativity of the atoms in isoelectronic species can have an effect on reactivity.)
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Hydrophilic molecules that are to be released by cells are stored in membrane-bound structures called:_____
Hydrophilic molecules that are to be released by cells are stored in membrane-bound structures called Secretory vesicles.
The secretory vesicle is a vesicle that mediates the vesicular delivery of cargo - e.g. hormones or neurotransmitters - from an organelle to particular web websites on the molecular membrane, in which it docks and fuses to launch its content.
Secretory vesicles shape from the trans-Golgi network, and they launch their contents to the molecular outside with the aid of using exocytosis in reaction to extracellular signals. The secreted product may be both a small molecule (together with histamine) or a protein (together with a hormone or digestive enzyme).
Vesicles are small systems inside a molecule, together with fluid enclosed with the aid of using a lipid bilayer worried in delivery, buoyancy control, and enzyme storage.
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What metal wil not react with hydrochloride acid? Please help
Anything detected with the five senses is considered an
Answer:
sight, taste, touch, hearing and smell
Explanation:
Anything detected with the five senses is considered a sensory perception or sensory experience
Our five senses are sight (vision), hearing (audition), taste (gustation), touch (tactile perception), and smell (olfaction). These senses allow us to perceive and interpret information from the external environment.
When stated as "detected with the five senses," which means gather information about the world around us through these sensory experiences.
For example:
1. Sight (Vision): We perceive visual information through our eyes, allowing us to see colors, shapes, and movements.
2. Hearing (Audition): We perceive auditory information through our ears, allowing us to hear sounds and distinguish between different tones and pitches.
3. Taste (Gustation): We perceive taste sensations through our taste buds on the tongue, allowing us to distinguish between sweet, sour, salty, bitter, and umami flavors.
4. Touch (Tactile Perception): We perceive tactile sensations through our skin, allowing us to feel textures, pressure, temperature, and pain.
5. Smell (Olfaction): We perceive smells through our olfactory system, located in our nose, allowing us to detect and identify various scents and odors.
All the sensory experiences , whether through sight, hearing, taste, touch, or smell, contribute to our understanding of the world and our surroundings.
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A molecule has an empirical formula of ch, and its molar mass is known to be 26 g/mol. What is its molecular formula?.
Molecular formula of a molecule is C₂H₂.
Empirical formula gives the proportion of the elements present in a compound.
The proportion od carbon and hydrogen is 1 : 1.
n(C) : n(Cl) = 1 : 1
n(C) = n(H) = n; amount of substance of carbon and hydrogen is the same in a molecule
M(molecule) = 26 g/mol; molar mass of a molecule
M(C) = 12 g/mol; molar mass of carbon
M(H) = 1 g/mol; molar mass of hydrogen
M(molecule) = n × M(C) + n × M(H)
M(molecule) = n × 12 g/mol + n × 1 g/mol
26 g/mol = n × 13 g/mol
n = n(C) = n(H) = 2
There are 2 atoms of carbon and two atoms of hydrogen in a molecule, so molecular formula is C₂H₂.
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ASAP!!! SCIENCE ITS DUE TOMZ
Answer:
1.
Groups - Verticle columns in the periodic table, signifies the number of valence electrons in the element.
vs.
Periods - Horizontal rows in the periodic table, signifies the number of shells in the element.
2. Because the group number corresponds to the number of valence electrons in an atom an element in group 5 (like Phosphorus) has 5 valence electrons.
Added information: a Valence electron is an electron in the outermost shell of an atom.
which component of the following reaction is the enzyme? sucrose sucrase water → sucrase glucose fructose
Sucrase is the enzyme in the given reaction.
Enzymes help proceed with chemical reactions faster in the body. They play a key role in digesting food, respiration, and other chemical processes happening in the body.
Sucrase is an enzyme that helps with digestion by the hydrolysis of sucrose into glucose and fructose. They are localized in the brush holder for the absorption of food. The body won't absorb sucrose in the absence of sucrase.
Sucrase is also known as invertase and it also occurs in plants for the hydrolysis of sucrose.
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4. Which of the following careers requires the study of chemistry? (Choose all that apply)
1. Pharmacist
2. Doctor
3. Nurse
4. Science teacher
5 examples of ionic bonding
Answer:
NaCl: sodium chloride.
NaBr: sodium bromide.
NaF: sodium fluoride.
NaI: sodium iodide.
KF: potassium fluoride.
Explanation:
Hope this helps!
You decide you want to find out how temperature affects the rate of dissolving sugar. you put the same amount of sugar into two identical beakers each with the same amount of water but at different temperatures. what is the variable? what is an independent variable? what is the dependent variable? explain your answers.
The experiment is performed to determine the solution and the observations. Variables are the data that are present in the experiment. Temperature is the independent and solubility is the dependent variable.
What are independent and dependent variables?Independent variables are defined by the variables that vary in the experiment and are the temperature in this case as the dissolution capability of the sugar is studied in the experiment.
The solubility of the sugar is a dependent variable as it varies based on the temperature of the beaker which affects the solubility factor. It gets altered by the temperature.
Therefore, the temperature is the independent variable.
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A lead ball is added to a graduated cylinder containing 30.8 ml of water, causing the level of the water to increase to 89.9 ml. what is the volume in milliliters of the lead ball, lead?
A lead ball added to a graduated cylinder containing 30.8 ml of water, causing the level of the water to increase to 89.9 ml, has a volume of 59.1 ml.
Volume is defined as the amount of space that matter occupies. There are three different ways to find the volume:
1) Volume by Space - by measuring its physical dimensions
2) Volume by Density and Mass - by dividing its weight by its density
3) Volume by Displacement - by measuring the volume displaced when immersed in a liquid or gas
To solve for the volume of the lead ball, we can use the displacement method by subtracting the initial volume from the final volume.
If the level of the water increased from 30.8 ml to 89.9 ml upon adding the lead ball, the displaced volume is:
volume = final volume - initial volume
volume = 89.9 - 30.8
volume = 59.1 ml
Hence, the volume of the lead ball, using displacement method, is 59.1 ml.
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Answer: 59.1 mL
Explanation: In order to find the volume of the lead ball, you will simply take the difference between the volume of the water before and after the ball was submerged.
In a combination circuit, to identify series and parallel elements, you should _____.
The most common ions for silver, zinc, and scandium are ag , zn2 , and sc3 . which of these ions have the same number of electrons as a noble-gas element?
Sc3+ ion has the same number of electrons as a noble-gas element.
For example, scandium (Sc) is an element with atomic number 21.
Electron configuration of scandium atom: ₂₁Sc 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹.
Electron configuration of scandium ion 3+: 1s² 2s² 2p⁶ 3s² 3p⁶
Scandium ion Sc³⁺ has the same number of electrons as noble gas argon (Ar).
Silver (Ag) is an element with atomic number 47.
Electron configuration of silver metal: [Kr] 4d¹⁰ 5s¹
Electron configuration of silver ion 1+: [Kr] 4d¹⁰
It does not have same configuration as noble gas.
Zinc a chemical element (the group 12 of the periodic table) with symbol Zn and atomic number 30, which means it has 30 protons and 30 electrons, because atom has neutral charge.
Electronic configuration of zinc atom: ₃₀Zn 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s².
Electronic configuration of zinc ion Zn²⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰
It does not have same configuration as noble gas.
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an electrical conductor is in a strong magnetic field. how is the conductor affected if it is connected to a battery so that current flows through the conductor?
When placed in a magnetic field, a current-carrying conductor experiences a mechanical force that can cause the conductor to move.
How does the magnetic field impact current?
Current and magnetic force are directly inversely connected in a homogeneous magnetic field for a straight current-carrying wire. As a result, the force is inversely related to the size of the current. This translates to: If the current is doubled, the force on the conductor will also double.
How do the fields of electricity and magnetism interact?Electric fields are created by differential voltages; the stronger the voltage, the stronger the resulting field. Magnetic fields are produced by electric current, and the stronger the current, the stronger the magnetic field. There will always be an electric field present even when there is no current flowing.
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Would you expect Ibuprofen to be soluble or insoluble in 1.0 M NaOH? Explain.
Answer:soluble
Explanation: bc its less then NaOh
During the synthesis of which type of molecule is a carboxyl group lost from a fatty acid, and water produced as an end product?
During the synthesis of lipids, a carboxyl group is lost from a fatty acid, and water is produced as an end product. The correct option is A.
What are lipids?Lipids are fatty acids that have two types of ends, a hydrophilic end, and a hydrophobic end. Lipids format the cell membrane structure and functions. They are greasy substances.
When there is a synthesis of lipids, water is produced as the end product and the carboxyl group will lose to form a molecule of fatty acid.
Thus, the correct option is A) lipids, regarding the molecule in which water is lost.
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The question is incomplete. Your most probably complete question is given below:
A) lipids
B) proteins
C) nucleic acids
D) carbohydrates
What is the atomic number of Gold
Which is true about UVA and UVB rays?
A. Both rays can be blocked 100% by sunscreen
B. UVA protects the surface, UVB protects beneath the surface
C UVB rays cause burning, UVA rays cause premature aging
D. UVA rays cause burning, UVB rays cause premature aging
Answer: C. UVA rays cause premature aging and UVB rays cause burning
Explanation: Ultraviolet radiation causes DNA changes in the skin, leading to premature aging and skin cancer. There are three kinds of UV light: UVA light. This form of solar radiation damages skin at all levels—from the surface layer (epidermis) down deep into the dermis.
Sand particles have density equal to 0.70 g/mL. A teacher ordered a 22 kg bag of sand from the scientific supply company. Sand plus air (as ordered) takes up 1.3 times as much volume as the sand particles alone. What is the volume in cubic feet (ft3) of sand plus air that the teacher ordered?
I need so much help with Dimensional Analysis aaaa
The volume of sand plus air that the teacher order is 14.4 x 10^4 ft3.
What is volume?
Volume is defined as the space occupied within the boundaries of an object in three dimensional space. It is also known as capacity of the object.
The SI unit of volume is liter.
To calculate the volume of sand :
Density = mass / volume
As density is given 0.70g/ml and mass of sand is 22kg then,
Volume = mass/ density
= 22 / 0.7g/ml = 31.43 g/ml or cm3
As sand plus air is 1.3 time much as volume of sand alone,
Then 31.43g/ml = 31.43 x 1.3 = 40.86 g/ml or cm3
40.86 cm3 is equal to 14.4 x 10^4 ft3
Thus, the volume of sand plus air that the teacher order is 14.4 x 10^4 ft3.
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An atom has 13 protons, 12 neutrons and 13 electrons in an atom. it loses 2 electrons to form an ion. find the number of protons, and electrons in the ion. also, find the charge of the ion.
(Tell as soon as possible) *Thank you *
Answer:
If there are 13 protons (positive charges), how many electrons are there in a neutral atom? Expert Answer 1)) given total number of protons =13 and electron =12 . For atom to be neutral total number of protons should be equal to total number of electrons.
Explanation:
What is the electrophile in the friedel-crafts alkylation reaction with tert-butyl chloride?
The tert-butyl cation is the electrophile in the friedel-crafts alkylation reaction with tert-butyl chloride.
What is tert-butyl chloride?
The organochloride with formula (CH3)3CCl is tert-butyl chloride. It is a flammable, colorless liquid. It has a limited water solubility and a propensity to hydrolyze into the equivalent tert-butyl alcohol. As an industrial precursor to various organic molecules, it is created.
In order to create alcohol and alkoxide salts, tert-butyl chloride is a crucial starting material in nucleophilic substitution processes. It is employed in Friedel-Crafts processes and as an alkylating agent for the introduction of the tert-butyl group. It serves as an intermediary in the synthesis of both medicines and agrochemicals.
Originally, this Alfa Aesar product was sold under the Thermo Scientific name. The legacy brand may be mentioned in some documents and label information.
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The density of lead is 11.4g/cm^3. the mass of a lead ball with a radius of .50mm is:_________
The density of lead is 11.4 g/cm³. The mass of a lead ball with a radius of 0.50mm is 5.9714226 x 10⁻² g.
The density of a substance is defined as the mass of substance per unit of its volume. Density is represented by the symbol, ρ.
The formula for density is -
Density (ρ) = mass (m)
volume (v)
Given :
Density of lead = 11.4 g/cm³
Radius of lead ball = 0.50 mm = 0.05 cm
Since,
Vsphere = 4/3 π r³
v = 4 × 3.14 × (0.05)³
3
v = 4.18 x (1.25 x 10⁻³)
v = 5.225 x 10⁻³
Since,
Density = mass
volume
11.4 g/cm³ = mass
5.225 x 10⁻³
mass = 11.4 x (5.225 x 10⁻³)
mass = 5.9565 x 10⁻² or 0.05955 g
So, the mass of a lead ball with a radius of 0.50mm is 5.9565 x 10⁻² g
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A glass of orange juice contains 3.1 dl of juice. how many milliliters of orange juice are in the glass?
Answer:
310
Explanation:
What is the approximate concentration of reaction product in a solution that has an absorbance of 0.7 at ph 6.0?
The approximate concentration of reaction product in a solution that has an absorbance of 0.7 at ph 6.0 is based on the equation A = εbc given in the passage, the concentration c is the absorbance A divided by the absorptivity ε in a 1 cm path length cell. 0.7 divided by approximately 1400 gives 500 μM.
A = εbc
0.7 = 1400 x c
7/14000 = 1/2000 = 0.0005 = 5x10^-4 = 500 μM
1 μM = 1 x10 ^-6
The concentration of a substance is the amount of solute present in a given volume of solution. Concentration is usually expressed in molarity, defined as the number of solutes in 1 L of solution. Solution concentration is a measure of the amount of solute dissolved in a given amount of solvent or solution.
Concentrated solutions are solutions that contain relatively large amounts of solutes. Dilute solutions are solutions that contain relatively small amounts of solutes. The definition of concentration means the amount of an ingredient or part relative to other ingredients or parts. An example of concentration is the amount of salt to water in a brine solution.
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In the first 85.0 s of this reaction, the concentration of no dropped from 1.12 m to 0.520 m . calculate the average rate of the reaction in this time interval.
In the first 85.0 s of this reaction, the concentration of no dropped from 1.12 m to 0.520 m .
What is rate of a reaction?
The speed at which a chemical reaction takes place is the rate of the reaction. It is the concentration change per unit time of a reactant in a reaction.
Since the concentration of NO reduces to half its initial concentration in 85 seconds that is from 1.12m to 0.520m, it can be said that 85 seconds is the half life interval for the reaction, Hence on average, half reaction is completed in the time interval of 85 seconds.
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If you had equal masses of each of the following substances, which would occupy the greatest volume?
Cocoa butter occupies the greatest volume.
What is cocoa butter good for?
Vitamin E has several health advantages for the body, and cocoa butter is a good source of this vitamin. The health of your blood, brain, skin, and reproductive system are all supported by vitamin E. Due to its high fatty acid content, cocoa butter is an excellent choice as the main component of skin creams.
Cocoa butter is 9/0 it's close to ICL but cocoa butter is the smallest end this one will take off the most volume because it is divided by the smaller density.It is important not to overheat the Baker when drying the sodium chloride because by these comments won't be loss and Baker was properly heat.
Complete question -
If you had equal masses of each of the following substances, which would occupy the greatest volume?a. ice (d = 0.917 g/mL)d. cocoa butter (d = 0.910 g/mL)b. water (d = 0.997 g/mL)e. aluminum (d = 2.70 g/mL)c. beeswax (d = 0.960 g/mL)
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In biochemistry, where reactants are normally dissolved in water, which bonds or interactions are strongest?
In the biochemistry, Where reactants are normally dissolved in water, The strongest bond or interaction in the water is polar covalent bonds.
Water is a good solvent for polar and ionic compounds. the polarity and hydrogen bonding capability of water makes excellent solvent for polar molecules.In water ionic bonds come apart much more than covalent bonds.
The polarity of water molecules is what makes a widely good solvent . The positive part of the water molecules attract negative part of solute and negative part of water attract positive part of solute.
Water greatly weaken the electrostatic forces and hydrogen bonding between ionic and polar molecules by competing for their attraction.
Hydrogen bonds are weaker than ionic bond and covalent bonds but stronger than dipole dipole interaction.
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Identify the oxidizing agent and the reducing agent for: ba (s) cl2 (g) --> bacl2 (s)
CL2 is the oxidizing agent and Ba is the reducing agent for :
ba (s) cl2 (g) --> bacl2 (s)
Oxidation agents are those which oxidize another substance by taking up their electrons. The other substance gets oxidized and loses electrons. The oxidation agents themselves go through reduction.
The tendency of oxidizing agents to accept electrons is due to their high oxidation states. Halogen is an example of an oxidizing agent.
Reducing agents on the other hand reduces the other substance by giving them electrons. they themselves go through oxidation. Hydrogen is an example of a reducing agent.
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When heat moves through an object in an assembly that is more conductive than materials around it, that is described as ________
When heat moves through an object in an assembly that is more conductive than the materials around it, that is described as Conduction.
The substance or material from which things are made or constructed: Stone is a durable material. Raw materials or serving as raw materials for use or development: Pulp is the raw material of paper. each component. Textile fabric: dress fabric.
In our culture, the material is probably more important than we think. Materials affect transportation, housing, clothing, communications, reactions, food production, and nearly every area of daily life. Useful materials have physical, chemical, or biological properties that are useful even after they have served their intended purpose or function, and when removed from solids and separated from waste, are materials suitable for the same or different purposes. Purpose.
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