The boiling point of a substance is also called the saturation temperature. It is the temperature at which a substance shows transition from liquid to gaseous state.
What is boiling point?The boiling point of a liquid is defined as the temperature at which its vapour pressure becomes equal to the atmospheric pressure. It is at this temperature a liquid starts to boil.
The boiling point is highly dependent on the intermolecular forces of a compound. The compounds with stronger intermolecular forces, higher masses and less branching have high boiling points.
Thus the boiling point of a compound is affected by many factors.
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How many different codons (triplets) code for the amino acid Proline (Pro)?A. 1B. 2C. 3D. 4
The number of the different codons (triplets) code for the amino acid Proline (Pro) is the correct option is D. 4.
A codon is the sequence of the three consecutive nucleotides that present in the mRNA that is the messenger ribonucleic acid strand. The four nucleotides in the mRNA, are as : A U G C in which the A represents the adenine, the U represents uracil, the G represents guanine, and the C represents cytosine. The most of the amino acids is encoded with the multiple of the codons.
Thus, the amino acid proline (Pro) is encoded by the four codons, named as the CCU, CCG, CCC, and CCA.
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What would be the effect of ACh binding to its receptor on the postsynaptic muscle cell?A.) Ca2+ would leak out of the cell as Na+ flowed into the cell.B.) Ca2+ would flow into the cell as Na+ flowed out of the cell.C.) Na+ would flow into the cell and K+ would flow out of the cell.D.) Only Na+ would flow into the cell.
Na+ would enter the cell while K+ would exit. In the postsynaptic or postjunctional membrane, ACh diffuses and binds to certain receptors.
What happens in the postsynaptic cell when acetylcholine binds to the receptor?In the postsynaptic or postjunctional membrane, ACh diffuses across the synaptic cleft and binds to specific receptors. An altered conformation of a membrane channel that is selectively permeable to both Na+ and K+ results from the binding of ACh to its receptors.
When ACh binds to its receptors, it modifies the structure of a membrane circuit that is selectively permeable to both Na+ and K+. When cholinergic receptors on skeletal muscle fibres interact with each other, ligand-gated sodium channels inside the cell membrane are opened.
The muscle fibre is then exposed to sodium ions, which causes the muscle to contract. By stimulating nonpostsynaptic AChRs, ACh specifically inhibits presynaptic nerve terminal specialisation and postnatal AChR cluster (synaptic differentiation), and by inhibiting postsynaptic AChRs, it inhibits motor short tapered bandwidth or engine axon splitting (synaptic growth).
Ion channels in the muscle fibre membrane are opened by the neurotransmitter acetylcholine (ACh) attaching to postsynaptic receptors.
The complete question is;
What would be the effect of ACh binding to its receptor on the postsynaptic muscle cell?
A.) Ca2+ would leak out of the cell as Na+ flowed into the cell.
B.) Ca2+ would flow into the cell as Na+ flowed out of the cell.
C.) Na+ would flow into the cell and K+ would flow out of the cell.
D.) Only Na+ would flow into the cell.
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0. 75 moles of sodium chloride is dissolved to make 0. 05 liters of solution
The molarity of 0.75 moles of sodium chloride is dissolved to make 0. 05 liters of the solution is 15 M.
To find the molarity of the solution, we need to use the formula:
Molarity (M) = moles of solute / liters of solution
We are given the moles of solute (0.75 moles of sodium chloride) and the liters of solution (0.05 liters). Plugging these values into the formula, we get:
Molarity (M) = 0.75 moles / 0.05 liters
Molarity (M) = 15 M
Therefore, the molarity of the solution is 15 M. This means that there are 15 moles of sodium chloride dissolved in 1 liter of solution.
Your question is incomplete, but most probably your full question was
Find the molarity of the following solutions: 0.75 moles of sodium chloride is dissolved to make 0. 05 liters of solution
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For breakfast, joni drank a cup of orange juice fortified with calcium. One cup of orange juice contains 100 kcal and has 250 mg of calcium. What is the nutrient density of this orange juice per kcalorie?.
Answer:
1 to 2.5mg of calcium
Explanation:
100 cals ÷ 100 =1
250mg ÷ 100 = 2.5
a collection of amino acids could be used to build a
A protein could be created from a set of amino acids. A naturally occurring, incredibly complex compound known as a protein is made up of amino acid residues connected by peptide bonds.
What is an amino acids?Proteins are made of substances called amino acids. The components of life are amino acids and proteins. Amino acids are what remain after proteins have been digested or broken down. Proteins are composed of amino acids. You require 20 of these for your body to function properly. They are the molecules that all living things require to build protein. 11 of the essential amino acids are produced by your body. Body protein as well as other crucial nitrogen-containing substances including creatine, peptide hormones, and some neurotransmitters cannot be produced without amino acids. Although allowances are expressed in terms of protein, a biological requirement is for amino acids.The substances known as amino acids are those whose molecules include both carboxylic acid (COOH) groups and the amino (NH2) group.To learn more about amino acids refer to:
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Calculate the solubility (in m) of o2 in the blood of a scuba diver at a depth of 100 feet, where patm = ~3 atm.
The solubility of O₂ in blood at a depth of 100 feet (3 atm) is 2.32 × [tex]10^{-3[/tex] mol. This can be calculated using Henry's law.
The solubility of O₂ in blood at a partial pressure of 3 atm can be calculated as follows:
solubility (m) = kH * patmwhere kH is the Henry's law constant for O₂ in blood, and patm is the partial pressure of O₂ in atmospheres. The value of kH can be found from experimental data or from tables of Henry's law constants.
It is known that the solubility of O₂ in blood increases with increasing partial pressure, so the solubility of O₂ in blood at a depth of 100 feet (3 atm) is likely to be higher than it would be at the surface (1 atm).
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Radiometric dating is possible because the rates of decay of radioactive isotopes _____.answer choicesa.change over timeb.change from place to placec.are constantd.vary widely
The Radiometric dating is the possible because the rates of the decay of radioactive isotopes are constant. The correct option is c. are constant.
The Radiometric dating is possible because of the rates of the decay of the radioactive isotopes. They use the absolute radiometric dating that requires the extremely long-lived parent nucleus. The Radiometric dating helps to calculates the age in the years for the geologic materials by the measuring of the presence of the short-life radioactive element. The radioactive dating or the radioisotope dating is the technique that is used to date the materials such as the rocks or the carbon.
Thus, the rates of the decay of radioactive isotopes are constant in the in the Radiometric dating .
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Which is the correct order of the steps in a generalized signal transduction pathway?A. Signal molecule binds to receptorB. molecules within cell transduce signalC. cell responds
The correct order of the steps in a generalized signal transduction pathway is:
A. Signal molecule binds to receptor B. molecules within cell transduce signal C. cell responds
The binding of a signal molecule, also known as a ligand, to a particular receptor protein on the cell surface or inside the cell is the initial step in signal transduction. The interaction of the signal molecule changes the shape of the receptor protein, activating downstream signalling pathways.
The signal is then transduced by molecules within the cell in the second stage, which entails the signal being sent from the active receptor to the intracellular signalling molecules. Second messengers, protein kinases, and other signalling proteins are examples of these molecules.
The process concludes with the cell's reaction to the signal, which might include changes in gene expression, protein synthesis, cell division, differentiation, or death. The kind of cell, the nature of the signal, and the environment in which the signal is received all influence the nature of the response.
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Constants Four electrons are located at the corners of a square 10.0 nm on a side, with an alpha particle at its midpoint. Consider the alpha particle as your system.
The work is needed to move the alpha particle to the midpoint of one of the sides of the square is - 7* 10⁻²² J
At the intersection of a square, four electrons are placed. Therefore, we will start by determining the electrostatic potential at the square's center.
So, it is shown here as
V = 4 kQ/r
Where.
r= distance of corner of the square from it center
r = a/√2
r = 10 nm/ √2 = 7.07 nm
Q= e = -1.6 x 10⁻¹⁹ C
The net potential is given by;
V = 4 x 9 x10⁹ x (-1.6 x 10⁻⁹)
7.07 x 10⁻⁹
V= 0.815 V
at this time, the alpha particle's potential energy
Ui = qV
Ui = 2 x 1.6 x 10⁻¹⁹ x - 0.815 = -2.6 x 10⁻¹⁹J
Then, one of the sides' midpoints Provided that's the electrostatic potential as
V = 2 kQ + 2 kQ
r₁ r₂
So,
r₁ = a/2 = 5nm
r₂ = √(a/2)²+a² = √5 a /2
r₂ = 11.2 nm
now potential is given as
V = 2 9x 10⁹ * (-1.6 x 10⁻¹⁹) + 2 9x 10⁹ * (-1.6 x 10⁻¹⁹)
5x 10⁻⁹ 11.2 x 10⁻⁹
V = - 0.576 - 0.257 = - 0.833V
Final potential energy is now presented as
Uf = q * V = 2 * 1.6 * 10⁻¹⁹ -0.833 = -2.67 x 10⁻¹⁹ J
Now work done in this process is given as
W = Uf - Ui
W = (- 0.267 * 10⁻¹⁹) - (-0.26 * 10⁻¹⁹)
W = - 7* 10⁻²² J
Your question is incomplete but most probably your full question was
Four electrons are located at the corners of a square 10.0 nm on a side, with an alpha particle at its midpoint. Consider the alpha particle as your system. How much work is needed to move the alpha particle to the midpoint of one of the sides of the square
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What is the systematic name of HNO2?
Nitrous acid is the chemical name for HNO₂ and it is its systematic name.
Nitric acid has the chemical formula HNO₃. Compared to nitrous acid, it is more potent and stable. This is due to the fact that its conjugate base is more stable than that of nitrous acid. H₂N₂O₂ is the chemical formula for hyponitrous acid. HNO₂ is a wobbly, unstable, and mildly acidic substance. It is sometimes referred to as a nitrogen oxoacid. Its molecular weight is 47 g/mol. HNO₂ has a boiling point of 158°C.
Nitrous acid is commonly produced by acidifying nitrite salt with mineral acid. As a result, nitrous acid is the chemical term or the systematic name for HNO₂.
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The Cyclohexane Ring Is Essentially Free Of Ring Strain Because Check All That Apply. There Are Neither Eclipsed Nor Gauche Interactions In ____
The cyclohexane ring is essentially free of ring strain because:
What is cyclohexane?
Cyclohexane is a cyclic hydrocarbon with the molecular formula C6H12. It is a colorless, flammable liquid that is commonly used as a nonpolar solvent in chemical reactions and as a starting material for the synthesis of other compounds. Cyclohexane is a cycloalkane, which means it contains a closed ring of carbon atoms.
There are no eclipsed interactions in the chair conformation of cyclohexane.There are no gauche interactions in the chair conformation of cyclohexane.The bond angles in the chair conformation of cyclohexane are close to the ideal tetrahedral angle of 109.5 degrees, which minimizes the angle strain in the molecule.The chair conformation of cyclohexane allows for maximum separation of the substituents on the ring, which minimizes the torsional strain in the molecule.All of these factors contribute to the stability of the chair conformation of cyclohexane and the absence of ring strain in the molecule.
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If you add chromate, an oxidizing agent, to each of the following, would a green Cr+3 solution be formed?
3-pentanol
2-methyl-2-butanol
1-propanol
No, adding chromate, an oxidizing agent, to 3-pentanol, 2-methyl-2-butanol, or 1-propanol would not result in a green Cr⁺³ solution.
What is an oxidizing agent?This refers to a chemical species that tends to oxidize other substances, i.e. cause an increase in the oxidation state of the substance by making it lose electrons. An oxidizing agent is often referred to as an oxidizer or an oxidant.
The oxidation of primary alcohols (such as 1-propanol) with chromate typically results in the formation of carboxylic acids, while secondary alcohols (such as 2-methyl-2-butanol) are typically oxidized to ketones. Tertiary alcohols (such as 3-pentanol) are generally resistant to oxidation. The green color in a Cr⁺³solution is due to the presence of the chromium ion, which is typically formed by the oxidation of a Cr⁺²ion, rather than the oxidation of an alcohol.
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The Bohr effect describes the tendency for hemoglobin to more readily unload oxygen under which conditions?increased pH and decreased PCO2decreased pH and decreased temperatureincreased pH and PCO2decreased pH and increased temperature
The Bohr effect refers to the phenomenon where hemoglobin has a decreased affinity for oxygen in conditions of decreased pH and increased levels of carbon dioxide (PCO2). In other words, hemoglobin more readily unloads oxygen in these conditions.
When carbon dioxide is produced by metabolizing tissues, it combines with water to form carbonic acid, which lowers the pH of the blood. As pH decreases, hemoglobin's affinity for oxygen decreases, causing it to more easily release oxygen to the tissues that need it. This allows for efficient oxygen delivery to active tissues and organs during exercise or other metabolic activities.
In contrast, increased pH and decreased PCO2, as would be found in the lungs during gas exchange, increase hemoglobin's affinity for oxygen, enabling it to more efficiently pick up oxygen for transport to the tissues. Decreased pH and increased temperature can also cause a decrease in hemoglobin's affinity for oxygen, facilitating the release of oxygen to the tissues.
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this is a tiny unit of an element that retains the properties of the element.
The tiny unit of an element that retains the properties of the element is called an atom.
Atoms are the basic building blocks of matter and are composed of a nucleus, which contains positively charged protons and neutral neutrons, surrounded by negatively charged electrons that orbit the nucleus. The unique arrangement of protons, neutrons, and electrons in an atom determines its chemical and physical properties, such as its atomic number, mass, and reactivity.Atoms are incredibly small and are typically measured in units of picometers or angstroms.
Each element is defined by the number of protons in its atomic nucleus, which is known as its atomic number. For example, carbon atoms have six protons in their nucleus, while oxygen atoms have eight protons. The number of neutrons in an atom's nucleus can vary, resulting in isotopes of the same element with different atomic masses.
Atoms can combine with other atoms to form molecules and compounds through chemical bonds, including covalent bonds, ionic bonds, and metallic bonds.
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Can a chemical name be used as a chemical identifier?
The harmful substance is recognized by its product identity. The chemical name, code number, or batch number are a few examples of possible values.
What is code number?a recognized practice wherein characters from one character set are assigned to characters from another.The elements are listed in the current periodic table from higher atomic number to lower. The number of protons that make up an atom's nucleus is known as the atomic number. An element can be identified by proton count (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).The word "atomic number," which is typically represented by the letter Z, refers to the quantity of protons that make up an atom's nucleus. This quantity is equivalent to the quantity of electrons that make up an uncharged atom. These include bar codes, ISBNs, ASCII codes, postal codes, and bank account numbers. Many of these modern codes use a checking mechanism, also known as a check digit.To learn more about code number refer to:
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is chcl3 polar or nonpolar
[tex]CHCl_{3}[/tex] is polar
Polar - A polar covalent link is created when atoms with different electronegativities share electrons to form a covalent bond. Polar bonding have a high melting point, low vapor pressure, high surface tension, and low boiling point. Polar chemicals interact with one another. On opposite ends of these molecules, there are positive and negative charges. They have electrical charge as a result. Examples include alcohol and Sulphur.
Chloroform has a tetrahedral molecular geometry, with the carbon atom at the center and the three chlorine atoms and one hydrogen atom located at the corners of the tetrahedron. The molecule has a dipole moment due to the unequal sharing of electrons between the carbon and chlorine atoms.
The chlorine atoms are more electronegative than the carbon atom, causing the electrons to be pulled closer to the chlorine atoms, which creates a partial negative charge. This results in the carbon atom having a partial positive charge. The polarity of the molecule makes it useful as a solvent for polar and nonpolar compounds.
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What is the equation for the creation of carbonic acid found in rainwater?
The equation for the creation of carbonic acid found in rainwater is:
CO₂ + H₂O → H₂CO₃
In this equation, carbon dioxide (CO₂) reacts with water (H₂O) to form carbonic acid ( H₂CO₃).
Carbonic acid is a weak acid that is formed when carbon dioxide dissolves in water. This process occurs naturally in the atmosphere when carbon dioxide in the air dissolves in rainwater, creating carbonic acid. Carbonic acid is also produced when carbon dioxide dissolves in seawater, which can have significant effects on the ocean's pH balance and the growth and survival of marine organisms.
The creation of carbonic acid in rainwater is important to understand as it can contribute to the acidification of soils and bodies of water, which can have negative impacts on plants, animals, and ecosystems.
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How can you predict the hybridization of the central atom?
Keep in mind that this is a simplified approach, and there may be exceptions or complications depending on the specific molecule and its geometry.
What is Hybridization?
In chemistry, hybridization is the process of combining atomic orbitals to form new hybrid orbitals with different properties than the original atomic orbitals. This concept is used to explain the geometry and bonding properties of molecules.
In hybridization, the valence electrons of an atom are rearranged to form hybrid orbitals that can participate in covalent bonding. The new hybrid orbitals are formed by mixing together atomic orbitals of similar energy, such as s, p, and d orbitals.
The hybridization of the central atom in a molecule can be predicted using the following steps:
Count the number of electron pairs around the central atom, including both bonding and lone pairs.
Use the electron pair geometry to determine the hybridization of the central atom, based on the following guidelines:
For two electron pairs, the hybridization is sp.
For three electron pairs, the hybridization is sp2.
For four electron pairs, the hybridization is sp3.
For five electron pairs, the hybridization is sp3d.
For six electron pairs, the hybridization is sp3d2.
Keep in mind that this is a simplified approach, and there may be exceptions or complications depending on the specific molecule and its geometry.
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This criminal justice model describes the expectation of an efficient criminal justice system.a. war-on-crime modelb. crime control modelc. justice modeld. due process model
This criminal justice model outlines what a successful criminal justice system should look like a crime control model.
What is a criminal justice system?The presence of any chemical at the incident or crime scene is determined using forensic chemistry. Investigating recovered materials using forensic chemical techniques helps identify both civil and criminal liabilities.Crime-related behavior can be explained by chemistry utilizing criminology. An investigation of the chemistry of criminals' brains to discover a correlation that might be connected to their motivations is an example of chemistry in criminology. Using chemistry to solve specific crimes is called forensic chemistry.Forensic science has an important place in the criminal justice system. Forensic scientists collect and analyze data from crime scenes and other sites to get fair judgments that may aid in the investigation and punishment of criminals or exonerate an innocent person.To learn more about criminal justice system refer to:
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What is the type of polyester that gets formed in the reaction between ethylene glycol and phthalic anhydride?
The type of polyester that is formed in the reaction between ethylene glycol and phthalic anhydride is known as polyethylene terephthalate, or PET for short.
PET is a condensation polymer that is formed by the reaction of two monomers: ethylene glycol and terephthalic acid (or its derivative, phthalic anhydride). The reaction involves the formation of ester bonds between the monomers, which leads to the formation of a long chain of repeating units. The resulting polymer has high tensile strength, good dimensional stability, and excellent resistance to moisture and most chemicals.
PET is widely used in the manufacturing of bottles, fibers, films, and other products due to its desirable properties, such as being lightweight, transparent, and durable.
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Of these gases, which has the fastest-moving molecules (on average) at a given temperature?A. HBrB. NO2C. C2H6D. They all have the same average speed
The fastest-moving molecules on average at a given temperature is C₂H₆.
Molar mass (M) is defined as the mass of a chemical compound divided by its amount of the substance measured in moles. The formula of the molar mass is given as, MB = m/nB, where m is the total mass of a sample of pure substance and nB is the amount of substance B given in moles. The definition of molar mass is applied to pure substance.
Molar mass of HBr = 80.9119
Molar mass of NO₂ = 46.005
Molar mass of C₂H₆ = 30.0694
Generally, the speed of the molecule is inversely proportional to its molar mass. Therefore, the lighter the molecule is the faster it moves.
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during respiration, does glucose become more oxidized or more reduced?
During respiration, glucose becomes more oxidized.
What is oxidation?
This is because glucose is broken down into smaller molecules, and in the process, electrons are removed from glucose and transferred to other molecules such as oxygen, resulting in the formation of carbon dioxide and water.
Oxidation is defined as the loss of electrons, and reduction is defined as the gain of electrons. Therefore, when glucose loses electrons during respiration, it is undergoing oxidation, and when other molecules such as oxygen gain electrons, they are undergoing reduction. The overall process of respiration is therefore an oxidation-reduction reaction, where glucose serves as the reducing agent and oxygen serves as the oxidizing agent.
Hence, During respiration, glucose becomes more oxidized.
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how to find bond order
To find the bond order of a molecule, subtract the number of bonding electrons from the number of anti-bonding electrons, and divide by 2.
The bond order is a measure of the strength and stability of a bond between two atoms in a molecule. It is calculated by determining the difference between the number of bonding electrons (those involved in forming a covalent bond) and anti-bonding electrons (those that weaken the bond) and dividing by 2.
The resulting number can range from zero to three, where higher bond orders indicate stronger and more stable bonds. A bond order of 0 indicates that the atoms do not form a bond, while a bond order of 1, 2, or 3 indicates a single, double, or triple bond, respectively. Bond order is an important concept in chemistry, as it helps predict the reactivity and behavior of molecules.
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What is the difference between precise and accurate in chemistry
Answer:
Precise means getting the same result (e.g., number) each time in a series of replicating experiments. Accurate means that the result is very close to the actual number. One can have a precise, but inaccurate result. Precision does not preclude systemic errors. On the other hand, accurate data may look sloppy, but it produced a correct result.
Explanation:
Let's image an experiment in which the actual value is know to be 5.
Precise:
Now say you and your lab-mate got the following results after 6 measurements of the same experiment.
Precise Accurate
4.5 6.5
4.4 4.1
4.6 5.1
4.5 5.1
4.5 5.8
4.6 3.5
Total 27.1 30.1
Avg. 4.52 5.02
The precise readings are closer together than the accurate readings, but they are not as accurate (4.52) as the sloppier, but more accurate measurements on the right, which show an average value of 5.02, very close to the actual value of 5. Thus, one can have results that are very precise (the numbers are all close to each other), but still wind up with an inaccurate number. This is often due to some constant error, perhaps a mis-calibrated instrument or improperly made solution. The series of measurements under Accurate, show greater deviation from each other, but the average, 5.02, is very close to the actual value, 5.0.
how an eruption of a volcano
What is the name of this unsaturated compound
Answer:
allylcyclopentane.
it may have other names but this is the most oniwn for this compound
Does NO2 have resonance structures?
Answer:
yes it has two
double bond and n-o-bond the n atom has a unpaired electron and a positive charge
there are two major resonance contributors to no2.
What is the basic structure of an Amino acid?
a.basic group, aliphatic group, hydrogen and a R side chain
b.acidic group, amino group, hydrogen and a R side chain
c.positively charged group, acidic group, hydrogen and an aromatic group
d.negatively charged group, basic group, hydrogen and an aliphatic group
The basic structure of an Amino acid is made up of acidic group, amino group, hydrogen, and a R side chain. The correct answer is option b.
The basic structure of an Amino acid is made up of four components:
1. An acidic group (-COOH)
2. An amino group (-NH2)
3. A hydrogen atom (-H)
4. A side chain (R group)
The R group is what differentiates one Amino acid from another and gives each Amino acid its unique properties. There are 20 different R groups that can be attached to the basic structure of an Amino acid, resulting in 20 different Amino acids.
Proteins are made up of substances called amino acids bound with peptide bonds and these proteins and amino acids are the components of life.
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What type of compound is KBr?
KBr is an ionic compound . It is made up of an ionic link between a metal (potassium, K) and a nonmetal (bromine, Br).
As the bromine atom in KBr receives an electron to become a negatively charged ion, the potassium atom loses an electron to become a positively charged ion (K+) (Br-). The ionic bond in KBr is produced by the resultant attraction between the positive and negative ions.
An ionic compound is a chemical compound composed of positively charged ions (cations) and negatively charged ions (anions) that are held together by electrostatic forces of attraction. These compounds are formed when one or more electrons are transferred from a metal atom to a nonmetal atom, resulting in the formation of ions with opposite charges.
Ionic compounds typically have high melting and boiling points, are brittle, and are good conductors of electricity in the molten or aqueous state.
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A reaction in which a compound breakdown into two or,more simpler substances is
A. Displacement reaction.
B. Neutralisation reaction.
C. Decomposition reaction.
D. Endothermic reaction.
A reaction in which a compound breakdown into two or more simpler substances is called decomposition reaction (C)
A decomposition reaction is a chemical process in which a single compound is broken down into two or more constituent parts that are more straightforward. In most cases, the decomposition reaction can be expressed as:
AB ⇒ A + B
The majority of decomposition reactions require an energy input in the form of heat, light, or electricity. Several typical instances of decomposition reactions include the chemical transformation of hydrogen peroxide into water and oxygen as well as the transformation of water into hydrogen and oxygen. Consequently, a decomposition reaction is a chemical reaction that may be simply defined as a reaction in which one reactant decomposes into two or more products.
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