The difference in charge between hydrogen ions that are slightly positive and other hydrogen ions that are slightly negative results in hydrogen bonds, which are electrostatic forces that attract.
Why do polar molecules make hydrogen bonds?The partial positive charge of the hydrogen atoms in some polar molecules that contain hydrogen atoms is drawn to the partial negative charge of an atom in another molecule close by. It is known as a hydrogen bond to describe this attraction.
What results in the forces between molecules called hydrogen bonds?Bonding of hydrogen. Not a covalent link to a hydrogen atom, hydrogen bonding is a unique kind of dipole-dipole interaction between molecules. It comes about as a result of the attraction between two extremely electronegative atoms, such as N, O, or F, and a hydrogen atom that is covalently bound to one of them.
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true or false: in this experiment, freezing point depression should be positive when the freezing point of the solution is lower than the freezing point of the pure solvent: group of answer choices true false
The stament is True, because, When the freezing point of the solution is lower than the freezing point of the pure solvent , it indicates that freezing point depression has occurred, and it is considered to be a positive result.
When a solution is composed of two or more components, the freezing point of the solution is usually lower than the freezing point of the pure solvent. This phenomenon is known as freezing point depression. Freezing point depression occurs because the addition of solutes to the solvent increases the energy required for the molecules to form the solid lattice structure associated with freezing. As a result, the temperature has to be lowered to the point where it can provide enough energy to form the lattice, and this is the freezing point of the solution.
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if 50 ml of 0.50 m nacl solution is diluted with water to a volume of 500 ml the new concentration of solution is: select one: a. 0.16 m b. 0.04 m c. 0.08 m d. 0.05 m
If 50 ml of 0.50 m nacl solution is diluted with water to a volume of 500 ml, The new concentration of the solution is 0.05 M (0.05 moles per liter).
To find the new concentration, you can use the equation for dilution:
C1V1 = C2V2
where,
C1 = the initial concentration,
V1 = the initial volume,
C2 = the final concentration,
V2 = the final volume.
Plug in the known values:
C1 = 0.5 M, V1 = 50 ml, V2 = 500 ml.
C2 = ... ? [M]
Rearranging the equation:
C2 = C1 x V1 / V2
C2 = 0.5 x 50 / 500
C2 = 0.05
So, the new concentration is 0.05 M, which is equivalent to option "d. 0.05 M".
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In the kinetics of an iodine clock reaction procedure, the initial rate is calculated by multiplying the initial concentration of ______________ by half, and dividing by the elapsed time as measured with a ____________
In the kinetics of an iodine clock reaction procedure, the initial rate is calculated by multiplying the initial concentration of thiosulfate by half, and dividing by the elapsed time as measured with a stop watch.
Chemistry classes frequently employ the "clock reaction" to examine the rate at which reactions occur because of its striking color change from colorless to blue. When I2 and starch interact, a dark blue iodine/starch complex is created, which causes the color to change. With the aid of a stopwatch, the pace of reaction can be precisely calculated by noting the moment the blue complex first emerges.
The method of beginning rates is used in this experiment to establish the rate law for a reaction.
The primary reaction to be investigated is the oxidation of I- by S2O82-(persulfate) in aqueous solution, or the "iodine clock reaction":
Slow, rate-determining step in equation 1: 2I- (aq) + S2O82- (aq) I2 (aq) + 2SO42- (aq).
Equation 2's fast step: I2 (aq) + 2S2O32- 2I- (aq) + S4O62-
When the primary reaction produces a particular quantity of I2, the "clock" reaction will signal. Equation 2's molar ratio can be used to compute the amount of I2 produced prior to the color change from the known addition of S2O32-. The rate at which the concentration of I2 changes over time is calculated using Equation 1.
Thiosulfate and Stop Watch are the proper choices. As a result, the complete statement will read as follows: "In the kinetics of an Iodine Clock Reaction process, the Initial rate is computed by multiplying the initial concentration of the thiosulfate by half, and dividing by the elapsed time monitored using a stop watch."
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If we quadruple the energy in a vessel of gas, what happens to the velocity of the gas particles?A) The velocity quadruples.B) The velocity doubles.C) The velocity halves.D) The velocity stays the same
As stated in the preceding statement The velocity doubles if we triple the fuel in a gas vessel.
Which four types of gases are there?By evaluating the four major gases you're searching for—oxygen (O2), methane gas (CO), sulfur compounds (H2S), and methane (CH4)—a 4 gas sensor can help you protect your employees in any setting.
What is the temperature of gas?The average rotational kinetic energy of both the molecules in a gas is measured by its temperature. The molecule in some kind of a hot gas move more quickly than those in a cold gas; while the mass of the gas doesn't change, the kinetic energy does, which raises the temperature.
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explain how modern synthesis techniques can improve medicines, both in qualitative and quantitative aspects, obtained from natural sources
Over the past century, advances in synthetic chemistry have made it possible to find numerous ground-breaking treatments that have benefited human health. To find the next generation of medications in the face of growing hurdles in the pharmaceutical industry, chemistry innovation must continue.
Generally speaking, there are two forms of modern drug synthesis:
1) Chemical synthesis - Through the use of chemical reactions. There is always a large-scale manufacture of medicines as a result of the chemical reaction. For medicinal synthesis, careful attention to detail at each stage is important.
2) Bioprocessing synthesis: In this method, bacteria are employed to create medicines. The ability of microbe cell walls to make beneficial products from them is the basic foundation of it.
Drug manufacture is an expensive and time-consuming process because of the moral dilemmas surrounding in vivo models and the scanty outcomes. The pharmaceutical industry is now making efforts that have been successful in developing and refining novel drug-delivery systems.
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under saturating agonist conditions, which functional state describes the nmdar conformation that has the lowest gibbs free energy? a. bound to agonists and impermeant to ions b. bound to agonists and permeant to ions c. unbound to agonists and permeant to ions d. unbound to agonists and impermeant to ions
Under saturating agonist conditions, the functional state that describes the NMDA receptor conformation with the lowest Gibbs free energy is Option B. bound to agonists and permeant to ions.
This is because in this state, the receptor is bound to agonists and is open, allowing the flow of ions, leading to the lowest Gibbs free energy. The other states, such as unbound to agonists and impermeant to ions, or unbound to agonists and permeant to ions, would have higher Gibbs free energy due to different conformations of the receptor. The N-methyl-D-aspartate receptor (NMDA receptor) is a type of glutamate receptor that plays a key role in synaptic plasticity and memory. The conformation of the NMDA receptor can be described in terms of its binding to agonists (activating molecules) and permeability to ions. Under saturating agonist conditions, the conformation with the lowest Gibbs free energy is likely to be the one that is bound to agonists and permeant to ions. This conformation has the highest affinity for agonists and the greatest ability to allow ions to pass through, which will result in maximal activation of the receptor. On the other hand, a conformation that is unbound to agonists and impermeant to ions will have a higher Gibbs free energy and will therefore be less likely to be the dominant form under these conditions.
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How do you think the -OH on the end of the pentanol molecule will affect the surface tension? Will pentanol have greater surface tension, less surface tension, or about the same surface tension as pentane or hexane? Write a prediction in the space below, and then submit your answer to move to the next section.
The -OH on the end of the pentanol molecule will affect the surface tension as it will be higher as that of as pentane or hexane.
What is Surface tension?This is referred to as the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid.
It minimizes the surface area and the higher strength of the intermolecular force is present in the pentanol therefore the surface tension of the pentanol is more than surface tension of the pentane and hexane.
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magnifying the bronze piece 100,000,000 times to see an individual atom is the same amount of magnification as beginning by looking at the whole u.s. from a satellite and zooming until you see:
Answer: A bug in the
Explanation:
Magnifying a bronze piece 100,000,000 times to see an individual atom is not the same amount of magnification as looking at the whole United States from a satellite and zooming in until you see a specific object.
Magnifying a bronze piece to see an individual atom, the magnification factor is extremely large, on the order of [tex]10^{8}[/tex] or 100,000,000 times. However, when looking at the whole United States from a satellite, even with significant zoom, the magnification factor would not be anywhere near this large. The level of magnification would depend on the altitude of the satellite and the size of the object being viewed, but even with the highest resolution satellite imagery, the magnification would still be orders of magnitude smaller than 100,000,000 times.
So, the comparison between these two scenarios is not equivalent and the level of magnification is vastly different.
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a 25.0 ml sample of concentrated h3po4 (14.7 m) is diluted to a final volume of 750.0 ml. what is the molarity of the final solution? group of answer choices
The molarity of the final solution is 0.368 M.
Phosphoric acid, also known as orthophosphoric acid, monophosphoric acid, or phosphoric(V) acid, is an inorganic solid with the chemical formula H3PO4 that contains phosphorus.
This can be calculated using the equation [tex]M1V1 = M2V2,[/tex]
where [tex]M1[/tex] is the molarity of the concentrated [tex]H3PO4 (14.7 M)[/tex]
[tex]V1[/tex] is the volume of the concentrated [tex]H3PO4 (25.0 mL)[/tex]
[tex]M2[/tex] is the molarity of the diluted solution (unknown)
and [tex]V2[/tex] is the volume of the diluted solution, may be used to determine this [tex](750.0 mL)[/tex]
When the given numbers are plugged in, the result is
[tex](14.7 M)(25.0 mL) = M2(750.0 mL),[/tex]
[tex]M2 = 0.368 M.[/tex]
The Molarity of final solution is 0.368M
It is frequently found as an 85% aqueous solution, which is a syrupy liquid that is colourless, odourless, and non-volatile. It is a significant industrial chemical that is used in several fertilisers.
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complete question:
A 25.0 mL sample of concentrated H3PO4 (14.7 M) is diluted to a final volume of 750.0 mL. What is the molarity of the final solution?
Group of answer choices
0.368
0.750
0.490
0.980
true or false. orbitals are a delocalized cloud of electron density
According to It is accurate to say because orbitals are just a delocalized clouds of electron density, as stated .
What are orbitals and instances of them?Orbital is a mathematical equation, also known as a plane wave, that represents the characteristics of a group of nuclei, such as a molecule, or an atomic nucleus, when enough than two electrons are present.
Do orbitals go by SPDF?Spdf or SPDF may refer to the names of the subshells or orbitals, as well as the octet, for which there is old obsolete method of classifying spectral lines as "sharp," "primary," "diffuse," and "fundamental."
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A polar molecule with the two electrically charged regions on either end is called a _____
A dipole is indeed a polar molecule featuring two electrically charged areas from either end.
A polar molecule is what?Both negative and positive charge areas are present in polar compounds. An illustration of a polar substance is water. Given its form and type of bonds, the molecule has a net positive charge for one end (the gas end) and a gradually decreasing charge on the other side (the oxygen end).
What determines a molecule's polarity?All covalent bonds that are polar and hydrophilic should be depicted by sending arrows towards an more charged object in order to identify whether the molecule stands polar or non-polar. The relative polarity can be depicted by altering the arrows' lengths.
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what molecule is the final acceptor of the electrons
Oxygen (O2), and Oxygen serves as the ultimate electron acceptor (O2). Since oxygen has a strong affinity for electrons and a high electronegativity, it is the perfect acceptor for low-energy electrons.
In the last electron acceptor, how many molecules are there?If one "molecule of isocitrate" serves as a substrate during "aerobic respiration," four molecules of "the last electron acceptor" in ETS are needed. The creation of three and two ATP molecules, respectively, arises from the electron transport system, which is the last stage in the process of releasing ATP from FADH2 and NADPH.
Is NADH an acceptor of electrons?NADH performs the same role as the food molecule as an electron donor. The oxidoreductases, which transfer electrons from NADH to molecular oxygen, another electron acceptor, are the electron transporters anchored in the mitochondrial membrane.
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what level of protein structure is associated with the sequence of amino acids?
The primary structure of a protein is only the arrangement of the amino acids within a polypeptide chain.
The definition of primary structure.A chain of such amino acids arranged in a linear fashion makes up the main structure. Areas of amino acid chains which are stabilized via hydrogen bonds from of the polypeptide backbone are found in the secondary structure. The secondary structure is produced by these hydrogen bonds as alpha-helixes and beta-pleated sheets.
What purpose does the primary structure serve?Protein's primary structure. The precise arrangement of amino acids in the chains that make up proteins' primary structures. As the final fold and hence the function of a protein are determined by the precise sequence of the proteins, it is crucial.
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a pure titanium cube has an edge length of 2.78 in . how many titanium atoms does it contain? titanium has a density of 4.50g/cm3 . express your answer in atoms to three significant figures.
The amount of Titanium atoms that has a density of 4.50 g/cm³ and edge length of 2.78 in would be 1.99 × 10²⁵atoms
The density of a substance can be defined as the mass of the substance divided by its volume. To calculate the density of a cube, we can use this following formula:
Density of a cube = Mass of cube ÷ Volume of cube
Edge length of cube = 2.78 inches = 7.0612 cm
Volume of cube = (Edge length)³
Volume of cube = (7.0612)³
Volume of cube = 352,075283 cm³
Mass of cube = Density of cube × Volume of cube
Mass of cube = 4.5 g/cm³ × 352,075283 cm³
Mass of cube = 1584.33877 g
The formula to calculate the moles of Titanium is as follows:
Moles of Ti = Given mass of Ti ÷ Molar mass of Ti
Moles of Ti = 1584.33877 g ÷ 47.867 g/mol
Moles of Ti = 33.099 mol
Atoms of Ti = 33.099 mol × 6.022×10²³ atoms/mol
Atoms of Ti = 1.99 × 10²⁵ atoms
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concentrated hydrochloric acid has a density of 1.19 g/ml and a concentration of 38% by mass. what is the molarity of acid in the solution?
The molarity of the hydrochloric acid in the solution can be calculated by dividing the mass of the acid (38 g) by its molar mass (36.5 g/mol) and then dividing that number by the volume of the solution (1000 mL). This gives a molarity of 0.104 mol/L.
Concentrated hydrochloric acid is a solution of hydrogen chloride (HCl) in water. It is a highly corrosive, strong mineral acid with many industrial uses. It is used in the production of chlorides, fertilizers, and dyes, in electroplating, and in the photographic, textile, and rubber industries.
It is also used to clean metals and as a laboratory reagent. Concentrated hydrochloric acid is a corrosive liquid and contact with the skin and eyes should be avoided. Inhalation of the fumes of the acid should also be avoided.
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an electron in an orbital that penetrates close to the nucleus will tend to experience a higher effective nuclear charge than one that does not. True or False ?
True. There is a tendency for an electron in an orbital that enters the nucleus to have a larger effective nuclear charge than an electron in an orbital that does not.
What is electrons?Outside of an atom's nucleus, electrons are negatively charged particles that make up the atom. They are in charge of an atom's chemical and physical properties and inhabit the electron shells or orbitals of an atom.
This is due to the higher attraction between an electron and the positive charge of the nucleus the closer the electron is to the nucleus. The actual nuclear charge less the shielding provided by the electrons in the inner shells is the effective nuclear charge that an electron experiences. Due to the shielding effect of the inner electrons, electrons that are further from the nucleus suffer a decreased effective nuclear charge. Because of this, electrons in orbitals that enter the nucleus closely will have a larger effective nuclear charge and be more tightly bonded to the nucleus, compared to electrons in orbitals that enter the nucleus more distantly.
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what features about the following lewis structure make this structure very unlikely to contribute much to the bonding in nco?
CN- And O+ be applied features about the following lewis structure make this structure very unlikely to contribute much to the bonding in nco.
Lewis structures, additionally known as Lewis dot formulas, Lewis dot systems, electron dot systems, or Lewis electron dot systems (LEDS), are diagrams that show the bonding among atoms of a molecule, in addition to the lone pairs of electrons that can exist in the molecule. A Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds. The Lewis structure turned into named after Lewis structures extend the concept of the electron dot diagram by adding traces among atoms to symbolize shared pairs in a chemical bond.
Lewis systems display every atom and its role in the structure of the molecule through the use of its chemical symbol. lines are drawn among atoms that can be bonded to each other (pairs of dots may be used in preference to strains). extra electrons that form lone pairs are represented as pairs of dots and are placed subsequent to the atoms.
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of the bonds c-c, cc, and cc, the c-c bond is . a. strongest/shortest b. strongest/longest c. weakest/longest d. weakest/shortest e. intermediate in both strength and length
Of the bonds C-C, C=C, and C≡C, the C-C bond is the weakeast and longest. The correct answer is C.
A covalent link between two carbon atoms is known as a carbon-carbon bond. The single bond, which consists of two electrons—one from each of the two atoms—is the most prevalent type. One hybridized orbital from each of the carbon atoms contributes to the formation of the carbon-carbon single bond, which is known as a sigma bond.
A triple bond made of carbon atoms has the highest bond energy since it is the strongest bond. A carbon-carbon single bond has the lowest bond energy since it is the weakest bond.
C≡C > C=C > C−C. is the proper order for the bond energies of C≡C, C=C, and C−C bonds.
Your question is incomplete but most probably your full question was
Of the bonds C-C, C=C, and C≡C, the C-C bond is
a. strongest/shortest
b. strongest/longest
c. weakest/longest
d. weakest/shortest
e. intermediate in both strength and length
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if you have 1.0 mol of each of the following compounds, which will have the greatest mass?
The molar mass of N₂O₅ is greatest mass. The oxide of nitrogen, or N2O5, is a nonmetal that is also in its highest oxidation state, making it (very) acidic.
What do a mole and a molar mass mean?Avogadro's number of molecules (molecular compound) or formula units are found in one mole of a chemical (6.022 x 1023) (ionic compound). You may determine the mass of 1 mole of a compound by looking at its molar mass. In other words, it provides the number of grams in a substance per mole.
Do molar masses correspond to moles?Making use of the Mole. The molar mass of a substance is the weight of a mole of that substance. In chemistry, the molar mass is frequently employed to convert grammes of a chemical to moles. The periodic table lists an element's molar mass, which is its atomic weight in grammes per mole (g/mol).
Number of moles = mass/molar mass
Molar mass of N₂O₅ = (14×2+16×5) g/mol = 108 g/mol
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consider what you observed by tracking molecules in the sim. compared to molecules in other phases, what is different about the way molecules move in solids?
The difference between the way molecules move in solids compared to other phases is the limited movement and vibrational motion of molecules in solids, compared to the more fluid and unrestricted movement of molecules in liquids and gases.
In solids, molecules are tightly packed and have limited movement due to the strong bonds between them. This results in a fixed arrangement of molecules in the solid phase, with only small vibrational movements occurring.
Compared to molecules in liquids and gases, molecules in solids move differently because they are restricted to small vibrational movements rather than freely flowing and colliding with one another. In liquids, molecules have more freedom to move and flow past one another, while in gases, molecules have the most freedom to move and collide with one another, resulting in the most rapid movement of all the phases.
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Why does the size of an atom decrease as you move across a period?
A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius.
Moving left to right across a period reduces the atomic radius because the nuclear charge increases as the atomic number increases, making the atom more compact.
Atomic radius decreases as you move from left to right across a period (due to increasing nuclear charge) and increases as you move down a group on the periodic table (due to the increasing number of electron shells).
because the valence electrons in periods are in the same outermost shell. Moving from left to right, the atomic number increases over the same time period, increasing the effective nuclear charge. The atomic radius of elements decreases as attractive forces increase.
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analyze the spectra, assigning all of the major peaks. what are the expected impurities in these reactions? do you see them in the spectra?
Spectra analysis is the process of interpreting the information contained in a spectrum, such as a mass, IR, NMR or Raman spectra. The peaks in a spectrum represent specific molecular species or functional groups, and the assignment of these peaks to specific compounds or functional groups is an important part of spectra analysis.
About SpectraThe emission spectra or emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.
In chemical reactions, impurities are often produced as byproducts and can interfere with the desired outcome. Some common impurities include unreacted starting materials, side products, contaminants, and degradation products. Whether or not these impurities are visible in a spectrum depends on the sensitivity of the instrument and the specific spectra being analyzed.
If you provide me with more specific information about the spectra you're analyzing, I would be happy to provide more information.
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Polylysine and polyglutamate are two examples of synthetic polypeptides which can assume an ?-helical structure under appropriate conditions.
Identify which of these two synthetic polypeptides can form an ?-helix at the indicated pH values.
a. Polylysine at pH 13
b. Polyglutamate at pH 7
c. Polyglutamate at pH 2
d. Polylysine at pH2
e. Polylysine at pH 7
f. Polyglutamate at pH 13
Therefore option a and e is correct.
The synthetic polypeptides polylysine and polyglutamate are two examples of under the right circumstances, polylysine and polyglutamate may both create alpha-helical structures.
In polypeptides, such as polylysine and polyglutamate, the development of the alpha-helix is impacted by a number of variables, including pH, temperature, and solvent conditions. One of the most crucial elements influencing the creation of an alpha-helix is the pH level. Generally speaking, neutral to slightly basic pH levels support alpha-helix development (around 7 to 9). However, depending on the particular circumstances and the sequence of the polypeptide, the precise pH range for alpha-helix formation in polylysine and polyglutamate may change.
The NH2 groups on the side chains of lysine become charged when the pH decreases, making it impossible for helices to form due to charge repulsion between these groups.
If more than 50% of the lysine residues need to be charged in order to "break" the helix, this might happen below the lysine pKa. A different pKa for lysine residues in polylysine compared to the monomer (free amino acid) in solution is another option.
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how many significant digits would be the most appropriate to use when estimating vo2max using ml/kg/min?
When estimating VO2max using ml/kg/min , the most appropriate number of significant digits to use is 4-5.
This is because the values for VO2max typically range from 15-50 ml/kg/min, and the accuracy of the value can vary depending on the individual. Therefore, it's important to use the most appropriate number of significant digits when measuring VO2max to ensure accuracy.
When measuring VO2max, it is important to use the most accurate values to ensure accuracy. This involves taking into account factors such as the individual's age, sex, body composition, and fitness level. Additionally, the duration and intensity of the exercise being measured should also be taken into consideration.
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which particle determines how reactive the atom will be?
An atom's reactivity is determined by the amount of electrons in its outermost shell.
An atom is just what?A chemical element is uniquely determined by its atoms, which are tiny pieces of matter. An atom is made up of a core core and one or perhaps more electrons with negative charges that orbit it. The positive charges, comparatively hefty atomic nuclei that make up the nucleus may be present.
What elements that constitute atoms?Quarks and protons are the two categories of fundamental components that comprise an atom. An atom's nucleus is encircled by an area of electrons. The electrical charge of the every electron is negative one. The neutrons and protons which together help compensate an atom's nucleus, are formed of quarks.
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Which type of subatomic particle most directly determines the chemical reactivity of an atom? Protons Neutrons Electrons None of the above Answers b and Question 2 How many covalent bonds does carbon (atomic number 6, atomic mass 12) usually make in organic molecules?
1) Option 3. Electrons. The type of subatomic particle that most directly determines the chemical reactivity of an atom is electrons.
Electrons are negatively charged particles that occupy the outermost energy level, or valence shell, of an atom. The number of electrons in this valence shell, as well as the arrangement of these electrons, determines the chemical properties of an atom and its reactivity. For example, an atom that has a full valence shell, with 8 electrons in its outer energy level, is considered to be unreactive and unlikely to form chemical bonds. On the other hand, an atom with a partially filled valence shell, such as carbon, nitrogen, or oxygen, is likely to participate in chemical reactions and form bonds with other atoms.
2) carbon (atomic number 6, atomic mass 12) usually makes 4 covalent bonds in organic molecules
Carbon, with atomic number 6 and atomic mass 12, usually forms 4 covalent bonds in organic molecules. This is due to the presence of 4 valence electrons in the outermost shell of the carbon atom. In covalent bonding, atoms share electrons to form a bond and complete their outermost electron shell. Carbon can bond with other elements such as hydrogen, oxygen, nitrogen, etc. to form complex organic molecules such as carbohydrates, lipids, proteins, etc. The ability of carbon to form multiple covalent bonds with other atoms is what makes it the backbone of all living organisms and the central component of organic chemistry. The number of covalent bonds an atom can form is directly related to the number of valence electrons it has, which in turn determines its chemical reactivity.
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how many milligrams of iron(iii) chloride result when 13.1 mg of iron is reacted with an excess of chlorine gas?
Answer: 38.1 mg
Explanation:
Step 1: Write the equation for the reaction.
Fe (s) + Cl₂ (g) ⇒ FeCl₃ (s)
Step 2: Balance the equation.
2 Fe (s) + 3 Cl₂ (g) ⇒ 2 FeCl₃ (s)
Step 3: Convert 13.2 mg iron into moles iron.
13.1 mg x (1 g/1000 mg) x (1 mol/55.8 g) = .000235 mol Fe
Step 4: Use the balanced equation from step 2, the moles of Fe from step 3, and the molar mass of FeCl₃ to find the moles FeCl₃.
1 mole FeCl₃ = 162.2 g/mol
.000235 mol Fe x (2 mol FeCl₃/2 mol Fe) x (162.2 g FeCl₃/1 mol FeCl₃) = 0.0381 g FeCl₃
Step 5: Convert grams FeCl₃ to milligrams FeCl₃.
1 g = 1000 mg
0.0381 g FeCl₃ x 1000 mg/1 g = 38.1 mg
5. the reaction between ethyl bromide (c2hbr) and hydroxide ion in ethyl alcohol at 330k: c2h5br (aq) oh-1 (aq) c2h2oh (l) br-1 (aq) is first order each in ethyl bromide and hydroxide ion. when [c2h5br] is 0.0477 m and [oh-1] is 0.100 m, the rate of disappearance of ethyl bromide is 1.7 x 10-7 m/s. (c) how would the rate of disappearance of ethyl bromide change if the solution were diluted by adding an equal volume of pure ethyl alcohol to the solution?
The value of the rate constant is 3.6×[tex]10^{-5} m^{-1} s^{-1}[/tex].
The rate law is:
Rate = k[C2H5Br][OH-]
Substituting values given :
1.7× [tex]10^{-7[/tex] = k × 0.0477×0.100
Rate constant k= 3.56×[tex]10^{-5} m^{-1} s^{-1}[/tex]≈ 3.6×[tex]10^{-5} m^{-1} s^{-1}[/tex]
A chemical response is a manner that leads to the chemical transformation of 1 set of chemical substances to any other. Classically, chemical reactions embody modifications that handiest involve the positions of electrons inside the forming and breaking of chemical bonds among atoms, without exchange to the nuclei (no change to the factors gift), and may regularly be described with the aid of a chemical equation. Nuclear chemistry is a sub-area of chemistry that involves the chemical reactions of risky and radioactive elements where both electronic and nuclear modifications can arise.
The substance (or materials) initially worried in a chemical reaction are called reactants or reagents. Chemical reactions are commonly characterized by using a chemical trade, and they yield one or greater merchandise, which usually have residences exclusive from the reactants. Reactions often encompass a sequence of man or woman sub-steps, so-referred to as fundamental reactions, and the statistics on the correct path of movement are part of the response mechanism.
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Complete Question:
The reaction between ethyl bromide (C2H5Br) and hydroxide ion in ethyl alcohol at 330 K, C2H5BR(alc) + OH-(alc) --> C2H5OH(l) + Br-(alc), is first order each in ethyl bromide and hydroxide ion. When [C2H5Br] is 0.0477 M and [OH-] is 0.100 M, the rate of disappearance of ethyl bromide is 1.7 x 10^-7 M/s.What is the value of the rate constant?
millie mole combines 0.8 moles of a and 0.5 moles of b. how many moles of c will form in the reaction, assuming that all available reagents will be converted to product?
The amount of C that will develop is 0.5 moles since B is limiting. As a result, some A will remain after the reaction and all of the B will be consumed.
The mole ratios of the reactants and products are shown by the balanced chemical equation. We know that one mole of A interacts with one mole of B to generate one mole of C since the equation is balanced. As a result, the reaction will produce an identical amount of moles of C. Given that Millie Mole contains 0.8 moles of A and 0.5 moles of B, the quantity of C that may be generated depends on the amount of B, which acts as the limiting reactant. Since B is restricting, only 0.5 moles of C will grow. As a result, following the reaction, some A will be left behind and no B will be present.
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describe a situation (in 2-3 sentences) in which you would need to neutralize a chemical before discarding it down a drain.
A situation where it is necessary to neutralize a chemical before disposing of it because the chemical contains a compound that can affect nearby objects. For example, acid laboratory waste that needs to be neutralized before being discharged into the sewer. This is because acid solutions are corrosive so they can cause corrosion in water pipes.
What are the chemicals?A chemical substance or chemical, also known as a pure substance is a form of matter that has a constant chemical composition and characteristic properties.
The following are examples of some chemicals:
Carbon monoxide.Ammonia.Chlorine.Hydrochloric acid.Sulfuric acid.The disposal of chemicals is also not arbitrary because these chemicals can affect objects around them
As acid laboratory waste needs to be neutralized before being discharged into the sewer. This is because acid solutions are corrosive so they can cause corrosion in water pipes.
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