Roco being chemist preparing compounds, and ionic bonds. The answer of the questions are the given below:
1. Rocco is making bonds when he prepares the compounds.
Evidence:
Heat is being applied, which is a common way to provide energy to form chemical bonds.The products of the reactions, LiCl and MgBr2, are both compounds, indicating that new bonds have been formed.2. The bonds in these compounds are ionic bonds.
Evidence:
Lithium and chlorine, as well as magnesium and bromine, are both pairs of elements with large differences in electronegativity, indicating the formation of ionic bonds.The products of the reactions, LiCl and MgBr2, have a crystal lattice structure, which is characteristic of ionic compounds.3. Rocco may only be getting half as much magnesium compound because magnesium has a higher electronegativity than lithium, meaning that magnesium attracts electrons more strongly than lithium does. This means that the magnesium-bromine bond is stronger and therefore requires more energy to form. To increase his yield, Rocco could try to add more energy to the reaction, for example by using a higher temperature or longer reaction time.
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Determine the mass in grams of each of the following:
a. 3.00 mol Al
b. 2.56 × 10^24 atoms Li
c. 1.38 mol N
d. 4.86 × 10^24 atoms Au
e. 6.50 mol Cu
f. 2.57 × 10^8 mol S
g. 1.05 × 10^18 atoms Hg
Answer:
a. 3.00 mol Al = 3.00 x 27.0 g/mol = 81.0 g
b. 2.56 × 10^24 atoms Li = 2.56 × 10^24 x 6.939 g/mol = 17.75 g
c. 1.38 mol N = 1.38 x 28.0 g/mol = 38.64 g
d. 4.86 × 10^24 atoms Au = 4.86 × 10^24 x 197.0 g/mol = 961.3 g
e. 6.50 mol Cu = 6.50 x 63.5 g/mol = 410.75 g
f. 2.57 × 10^8 mol S = 2.57 × 10^8 x 32.1 g/mol = 82,567,600 g
g. 1.05 × 10^18 atoms Hg = 1.05 × 10^18 x 200.6 g/mol = 210,000 g
arrange the following elements in order of increasing electronegativity, with 1 being the smallest and 4 being the largest: aluminum, thallium, indium, gallium
The electronegativity of 4 given elements aluminum, thallium, indium, and gallium arranged in increasing order are:
1. Aluminum
2. Gallium
3. Indium
4. Thallium
The ability of an atom to draw electrons into a chemical connection is known as electronegativity. It is a relative scale, with values ranging from 0 to 4.0. The higher the electronegativity, the greater the ability of an atom to attract electrons.
In the list of elements provided, aluminum has the lowest electronegativity, while thallium has the highest. This means that aluminum is less likely to attract electrons towards itself in a chemical bond, while thallium is more likely to do so. The other two elements, gallium and indium, have intermediate electronegativities and lie in between aluminum and thallium on the scale. Electronegativity generally increases as you move from left to right within a row (period) of the periodic table and increases as you move up a column (group). This is because the valence electrons of an element, which are involved in chemical bonding, are located farther away from the positively charged nucleus as the atomic number of the element increases. As a result, elements with a higher atomic number have a stronger ability to attract electrons towards themselves. Aluminum is located in the 13th column (group III) of the periodic table and has an electronegativity of 1.61. Gallium, indium, and thallium are located in the same column and have electronegativities of 1.81, 1.78, and 1.62, respectively. As you move from aluminum to thallium, the electronegativity increases, reflecting the increased ability of these elements to attract electrons towards themselves.
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what happens when soluble ionic compounds dissolve in water and reaches saturation point?
When the soluble ionic compounds dissolve in the water and it reaches saturation point it means that there is no more of the solute will be dissolve.
When the ionic compound will dissolve in the water then the water molecule acts like the tiny magnet that will creates the force of attraction on the ions of the solute. When all the molecules of the water have attached to ions of the solute and there will be no more are available, then the solution is said to be the saturated solution, and there is no more of the solute will dissolve.
Thus, the when the solution reaches to the saturation point, there will no more solute available.
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Balloons for a New Year's Eve party in Fargo, ND, are filled to a volume of 2.1 L at a temperature of 22 degree C and then hung outside where the temperature is -26 degree C What ts the volume ot the balloons after they have cooled to the outside temperature? Assume that atmospheric pressure inside and outside the house is the same.
The volume of the balloons after they have the cooled to the outside the temperature is 1.7 L.
The initial volume , V₁ = 2.1 L
The initial temperature, T₁ = 22 °C = 295 K
The final temperature , T₂ = -26 °C = 247 K
The final volume, V₂ = ?
The charles' law is expressed as :
V₁ / T₁ = V₂ / T₂
V₂ = (2.1 × 247 ) / 295
V₂ = 518.7 / 295
V₂ = 1.7 L
The final volume of the balloon, V₂ = 1.7 L.
Thus, the final volume of the balloons is 1.7 L.
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name polymers whose intermolecular forces are principally (a) london forces, (b) dipole- dipole forces, and (c) hydrogen bonding.
Polymers are large molecules made up of many smaller molecules, known as monomers, linked together in a chain. The intermolecular forces between the molecules in a polymer can have a significant impact on its properties. The most commonly encountered intermolecular forces in polymers are London dispersion forces, dipole-dipole interactions, and hydrogen bonding.
London dispersion forces are the weakest of the three, but are still important for many polymers. Dipole-dipole interactions occur when the partial charges of the molecules line up and create a dipole. Hydrogen bonding occurs when hydrogen atoms form a strong bond with another atom, usually oxygen, nitrogen, or fluorine. These forces are responsible for the strength and flexibility of the polymer and play a role in how the polymer behaves in different situations.
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if liquid x has a higher vapor pressure than liquid z, which sample should have the higher boiling point?
If the liquid X has a higher vapor pressure than to the liquid Z. So the sample of Liquid ‘Z’ will have higher boiling point.
Vapor pressure: Vapor pressure is a measure of the tendency of material to change into the gaseous or the vapor state, and it increases with temperature. The temperature at which the vapor pressure at the surface of a liquid will becomes equal to the pressure exerted by the surroundings is called as the boiling point of the liquid.
Boiling point: boiling point is the temperature in which the vapor pressure of a liquid will becomes equal to the atmospheric pressure.
Now, if the vapor pressure of a liquid will be high, it means intermolecular force between the molecules are small. The little amount of heat energy will be enough to separate the molecules, so the boiling point will be low.
Here liquid X has higher vapor pressure than to the liquid Z so, liquid Z will have higher boiling point.
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which diffused father, the copper or the bromophenol blue? use the average distance traveled. how is atomic mass related to the diffusion rate?
The diffusion rate of a substance is influenced by its molecular mass, with lighter molecules diffusing faster than heavier ones.
The diffusion rate of a substance is determined by the temperature and the molecular mass of the substance. In general, lighter molecules diffuse faster than heavier ones. Therefore, if copper and bromophenol blue were placed in a solution, bromophenol blue, which has a smaller molecular mass, would diffuse farther in a given amount of time compared to copper.
The atomic mass of a substance is not directly related to its diffusion rate, but rather its molecular mass which is a combination of the atomic masses of its constituent atoms. To summarize, the diffusion rate of a substance is influenced by its molecular mass, with lighter molecules diffusing faster than heavier ones, but atomic mass by itself is not a direct predictor of the diffusion rate.
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which trp residue of carbonic anhydrase can be selectively modified with chcl3 at 20°c?
W4 trp residue of carbonic anhydrase can be selectively modified with CHCl₃ at 20°c
carbonic anhydrase, enzyme are found in red blood cells, gastric mucosa, pancreatic cells, as well as renal tubules which catalyzes the interconversion of carbon dioxide (CO₂) and carbonic acid (H₂CO₃). Carbonic anhydrase plays very important role in respiration by influencing CO₂ transport in the blood.
The aromatic side chain of Trp residues in proteins as well as peptides can be chemically modified by the two photochemical reactions using ultraviolet light (hv) at 20°C.
Photochemical reactions of Trp side chain with CHCl₃ and CCI₂CO₂H O A. Imidazole Each substitution on Trp will replaces one hydrogen atom attached to a carbon somewhere on the indole ring. Photochemical modification percentages of various Trp residues in carbonic anhydrase at 20°C.
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Cooking an egg is one type of process, while the formation of snow is another. In three to five sentences, identify each as exothermic or endothermic and explain how you know. (4 points)
An omelet is endothermic because it absorbs heat from its surroundings when it is being baked. Since water dissipates hot air while forming snow, snow creation is exothermic. Egg frying is exothermic.
How to explain endothermic?Chemical processes known as endothermic reactions use heat from the surroundings to produce products. These occurrences have the effect of chilling their immediate surroundings, which results in a cooling effect.
Endothermic heat: what is it?If the heat is absorbed either by system from the environment, the reaction or states of matter is endothermic. As a result of the system absorbing heat from its surroundings during an endothermic cycle, the environment cools.
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All of the transition metals have at least how many energy levels?
Answer:
4
Explanation:
4, because they start at period 4
All of the transition metals have at least 3 energy levels.
What are transition metals?Transition elements are elements with partly filled d orbitals (sometimes known as transition metals). Transition elements are defined by IUPAC as elements with a partly full d subshell or elements capable of forming stable cations with an incompletely filled d orbital. Transition metals are utilized as catalysts in a variety of applications. This is the most cost-effective method of producing ammonia, which is widely used in fertilizers. The metal surface may absorb elements and chemicals. Early transition metals are found on the periodic table's left side, from group 3 to group 7. Late transition metals range from group 8 to 11 on the right side of the d-block (12 if it is counted as transition metals).
Here,
All transition metals have at least three energy levels.
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a student accidentally left the chromatpgraphy paper in the baw solution for 4 hours instead of 1 hour, and the solvent front reached the top of the paper. briefly describe what you will observe when you develop (stain) the amino acid spots.
We observe that capillary action and the solvent front will continue rise. Once the solvent front reaches the top, then it will evaporate off of the top as well as more solvent will continue to rise, causing these spots to move up.
Thin layer chromatography, we're going to take the TLC plate and we'll place it into a beaker or TLC development chamber and it will contain some solution and then over time we'll get the solvent front reaching close to the top of the container and the TLC plates. So let's say that is one hour. For some of the reason we left it in there for four hours, then we'll continue to have capillary action and the solvent front will continue to rise. It will reach the top.
When the solvent front reaches the top, then it will evaporate off at the top and the more solvent will rise, and causing these spots to move up. And when it is occurred then we might even get if it takes longer than these spots will continue move up and we might end up with almost all spots at the top of TLC plate. And so this will be might after four hours.
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Sodium is an element in the periodic table which is a metal as it has a net positive charge. The valency of this element is +1. It can donate an electron to achieve the octet and hence stability. What are chemical elements? Chemical elements are the substances which cannot be decomposed into further simpler substances by any ordinary chemical process. These are presented in the periodic table on the basis of their atomic number. Sodium is an element which belongs to the alkali metals family. Sodium element can be denoted by the symbol Na. The element is a metal as it has a net positive charge. It can donate one electron from its valency shell to achieve the octet which gives it stability. Therefore, the valency of the element is 1. The element has 11 protons, 11 neutrons and 11 electrons. This can be represented as: ¹¹Na₂₂ where, Na is the symbol of sodium 11 is the atomic number = number of protons in the element 22 is the atomic mass = number of protons+ number of neutrons in the element.
Answer:
That is correct. Chemical elements are the fundamental building blocks of matter and cannot be broken down into simpler substances by ordinary chemical means. They are arranged in the periodic table based on their atomic number, which is the number of protons in the nucleus of an atom of that element. Sodium is an element with the symbol Na, and it is a metal belonging to the alkali metal group. It has a valency of +1, which means it can donate one electron from its outermost shell to achieve stability and form chemical compounds. The atomic number of sodium is 11, and the atomic mass is 22, which is the sum of the number of protons and neutrons in the atom.
which calculation or value provides you with an indication of the precision of the glassware? which piece(s) of glassware has/ have the greatest precision for measuring volume: the 10.00- ml graduated cylinder, 50.0-ml graduated cylinder, 50.00-ml buret or 10.00-ml pipet? provide an example for the calculation or value and explain using your quantitative results.
The precision of glassware can be indicated by its tolerance or the acceptable limit of error in volume measurement. The tolerance for a piece of glassware can be expressed as a percentage of its total volume. For example, a 10 mL graduated cylinder may have a tolerance of ±0.05 mL, meaning the measurement can vary by up to 0.05 mL and still be considered accurate.
Explanation :
In general, the piece of glassware with the greatest precision for measuring volume is the buret, as it typically has the smallest tolerance among the four options listed. For example, a 50 mL buret may have a tolerance of ±0.02 mL.
To demonstrate the precision of glassware, you can perform multiple measurements of the same volume and calculate the average. If the measurements are consistently close to the true value, this indicates high precision. For example, if you measure 10.0 mL of water five times with a 10 mL graduated cylinder and get the following readings: 9.97 mL, 9.98 mL, 9.96 mL, 9.99 mL, and 10.00 mL, the average would be 9.98 mL. The variability of the measurements is small, which indicates high precision.
What the Meanning of Measurements?The measurement in the answer above is a measurement that is useful for measuring the fraction of the glassmen, namely regarding the volume or factor that makes the glass break
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CaF₂ Express your answer as signed integers separated by a comma. the oxidation states of Ca F =
In the given compound the oxidation state of Ca is+2 and that of F2 is -1.
Using the following 2 rules we can find the oxidation of each atom in the compound in CaF2-
Halogens (group 17 elements) are given an oxidation number of -1 in compounds composed of two elements. Here Fluorine is an halogen and thus showing -1 oxidation stateIn their compounds, all alkaline earth metals (group 2 elements) show an oxidation state of +2. Here Calcium being the alkali earth metal displays +2 oxidation state.Some additional rules for calculating oxidation state are -
Any element that is free has an oxidation number of zero.The oxidation state of the hydrogen atom (H) is 1. However, it displays an oxidation number of -1 when coupled with an element that has a lower electronegativity than it.Most of the compounds made up of oxygen have an oxidation of -2. The oxidation number corresponding to oxygen in peroxides, on the other hand, is -1.In their compounds, all alkali metals (group 1 elements) have an oxidation state of 1.The total of all the constituent atoms' oxidation numbers is 0 for neutral substances.The net charge of a polyatomic ion is equal to the total sum of all the oxidation numbers of the atoms that make up the ion.These procedures can be used to determine an atom's oxidation number in a specific chemical.To learn more about oxidation state click here:
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The above question is incomplete. Check below the complete question-
In the molecule CaF₂ determine the oxidation state of each atom. Express your answer as signed integers separated by a comma. the oxidation states of Ca and F.
in the element neon, each atom contains eight electrons in its valence shell. the atoms of neon will be
In the element neon, each atom contains eight electrons in its valence shell. The atoms of neon will be inert (non-reactive) because they have a full valence shell.
Atoms of an element are characterized by the number of electrons in their outermost shell, known as the valence shell. When an atom has a full valence shell, it is considered to be stable, and therefore less likely to react with other elements or compounds. In the case of neon, each atom has eight electrons in its valence shell, which is the maximum number that the shell can hold.
As a result, neon atoms are considered to be chemically inert, meaning that they do not react with other elements or compounds. This is because they have a full valence shell and there is no reason for them to gain or lose electrons in a chemical reaction. The non-reactivity of neon makes it useful for a variety of applications, such as in lighting and cryogenics.
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Plaster of Paris Gypsum is the common name of calcium sulfate dihydrate (CaSO4 2 H2O). When gypsum is heated to 150 C, it loses most of the water in its formula and forms plaster of Paris (CaSO4 0.5 H2O): 2 (CaSO4 2 H2O)G 2 (CaSO 0.5 H2O6) + 3 H2O(g) What is the sign of AH for making plaster of Paris from gypsum?
The sign of the enthalpy change (ΔH) for the reaction of converting gypsum to plaster of Paris can be determined from the equation: 2 (CaSO4 2 H2O) -> 2 (CaSO4 0.5 H2O) + 3 H2O(g)
The products have more total bonds (in the solid phase) and less total bonds (in the gas phase) than the reactants, so the reaction is exothermic (ΔH is negative). Therefore, the sign of ΔH for making plaster of Paris from gypsum is negative.
The conversion of gypsum to plaster of Paris is a thermochemical reaction that involves the release of water as steam. The equation for this reaction is: 2 (CaSO4 2 H2O) -> 2 (CaSO4 0.5 H2O) + 3 H2O(g). The products of the reaction have a lower total bond energy than the reactants, which means that energy is released during the reaction. This release of energy is evidenced by the formation of steam, and it corresponds to a decrease in the enthalpy (ΔH) of the system. In other words, the reaction is exothermic, which means that ΔH is negative. This negative ΔH means that the reaction releases heat, which can be seen enthalpy as an increase in the temperature of the surrounding environment.
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if 6.0 moles al2(so4)3 of are produced in this reaction, how many moles of h2 will also be produced?
Answer:
The balanced chemical equation for the reaction is: 2 Al(OH)3 + 3 H2SO4 -> Al2(SO4)3 + 6 H2O
From the balanced equation, we can see that for every 2 moles of Al(OH)3 and 3 moles of H2SO4 that are consumed, 1 mole of Al2(SO4)3 and 6 moles of H2O are produced. Therefore, the ratio of moles of Al2(SO4)3 to moles of H2O is 1:6.
Given that 6.0 moles of Al2(SO4)3 are produced, we can use the ratio of moles to find the number of moles of H2 that are also produced:
6.0 moles Al2(SO4)3 / 1:6 ratio = 1.0 moles H2
Therefore, 1.0 moles of H2 will also be produced in this reaction if 6.0 moles of Al2(SO4)3 are produced.
if 75.0% of the isotopes of an element have a mass of 35.0 amu and 25.0% of the isotopes have a mass of 37.0 amu, what is the atomic mass of the element? * (1) 35.0 amu (2) 36.0 amu
The atomic mass of an element whose isotopes having mass 35 amu and 37 amu will be 35.5 amu. the correct answer is C.
When an element has the same number of protons but a different number of neutrons, that element is said to be an isotope.
Calculating the average atomic mass of an element involves multiplying each isotope by its mass and adding the results. You can figure out an element's mass by using:
atomic mass element = (mass isotopes₁ x abundance₁) + (mass isotopes₂ x abundance₂)
atomic mass element = (35 x 75%) + (37 x25%)
atomic mass element = 26.25 +9.25
atomic mass element = 35.5 amu
your question is incomplete but most probably your full question was
If 75.0% of the isotopes of an element have a mass of 35.0 amu and 25.0% of the isotopes have a mass of 37.0amu what is the atomic mass of the element
A) 35.0amu
B)36.0amu
C)35.5amu
D)37.0amu
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What information can Lewis structures convey?
The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms. Electrons are shown as "dots" or, in the case of a bond, as a line connecting the two atoms.
What purpose does the Lewis structure serve?The significance of Lewis's structure is the second. For forecasting the geometry, polarity, and reactivity of (in)organic compounds, Lewis structures are crucial. Lastly, how to depict the Lewis structure. For each available valence electron, a dot is placed around an atom to represent that electron in the Lewis structure for that particular element.
What is the Lewis structure's conclusion?Conclusion. A Lewis structure is created using the octet rule, which states that atoms must share electrons in order for each to have eight electrons in its outer shell. Typically, a symbol on the side of an element symbol designates a single electron.
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Given the pk, of each acid, determine whether it is strong or weak. a. citric acid, pka=3.1 _________ b. acetic acid, pka=4.7 _________c. sulfuric acid, pKq=-5 __________ d. nitric acid, pkg=-2 __________-
From the pK we can determine that citric acid is a weak acid, acetic acid is weak acid, sulfuric acid is a strong acid, nitric acid is a strong acid.
In layman's terms, pKa is a measurement of an acid's strength. A strong acid will have a pKa value that is lower than 0. To be more specific, pKa is the Ka value's negative log base ten value (acid dissociation constant). How tightly a proton is retained by a Bronsted acid is how the strength of an acid is measured. The strength of the acid and its capacity to donate protons increase with decreasing pKa values.
Therefore, Citric acid is a weak acid, acetic acid is a weak acid, sulfuric acid is a strong acid, and nitric acid is a strong acid, according to the pK.
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(iii) The filtrate was an alkaline solution of potassium carbonate. This was titrated
against a standard hydrochloric acid solution to find the concentration of the
potassium carbonate.
K₂CO3
+
2HC1
2KCI+ CO₂ + H₂O
Methyl orange was used as an indicator; this turns from yellow in the potassium
carbonate solution to pink when the potassium carbonate is neutralised by the
hydrochloric acid. The following results were obtained using 25.00 cm³ samples of
the potassium carbonate solution.
Burette finish/cm³
Burette start/cm³
24.80
0.00
26.20
1.60
26.55
2.00
I Calculate the mean volume of hydrochloric acid added, using all three sets
of results.
[1]
Explanation:
The mean volume of hydrochloric acid added can be calculated by summing the volume of acid added in each titration and dividing by the number of titrations.
1st titration: 24.80cm³ - 0.00cm³ = 24.80cm³
2nd titration: 26.20cm³ - 1.60cm³ = 24.60cm³
3rd titration: 26.55cm³ - 2.00cm³ = 24.55cm³
Sum of volumes: 24.80cm³ + 24.60cm³ + 24.55cm³ = 74.95cm³
Mean volume: 74.95cm³ / 3 = 24.98cm³
So the mean volume of hydrochloric acid added is 24.98cm³.
What phase is carbon dioxide in at 5 atm pressure and –20°C? (1 point)
Answer:
When a solid turns directly to a gas this is called sublimation. From the graph it can be seen if the pressure is raised to ~5 atm as the CO2 warms up, it will pass through its triple point.
Explanation:
if 4.55 g of naoh is typically produced by a chemical reaction, what would be the percent yield if 5.00 g could theoretically be produced from the reaction?
91% would be the percent yield if 5.00 g could theoretically be produced from the reaction.
In chemistry, yield, also known as reaction yield, is a percentage measure of the number of moles of a product created in proportion to the reactant consumed in a chemical process. One of the most important elements that scientists must address in organic and inorganic chemical synthesis processes is yield.
The words "yield," "conversion," and "selectivity" are used in chemical reaction engineering to indicate ratios of how much of a reactant was consumed (conversion), how much desirable product was generated (yield), and how much unwanted product was formed (selectivity), denoted as X, Y, and S.
A chemical reaction equation can be used to calculate the ideal connection between products and reactants in a chemical process. Stoichiometry is used to calculate chemical processes, such as the stoichiometric mole ratio of reactants and products.
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consider the two similar alkyl halides which compound will undergo e2 elimination at a faster rate and why?
CH3 CH2 Br will undergo E2 elimination at a faster rate as compared to CD CDBr.
The E₂ mechanism involves the breaking of the C-H or C-D bonds in the transition states of the reaction and the cleavage of C-D bond is known to be slower. That is why, The Compound CH3 CH₂ Br undergo E2 elimination at a faster rate. Alkyl halide undergo such E2 elimination reaction to forma alkenes. This type of reaction is known as E2 elimination reaction as it is considered bimolecular reaction. also this is an one step reaction and bond breaking and formation of new bonds seems to be occurring simultaneously.
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The above question is incomplete. Check the complete question below:
Which compound will undergo E2 elimination at a faster rate and why?
CD CD Br vs CH CH₂Br
Answer: The compound reacts faster because C-H Bonds are easier to break
Explanation:
C-H bond is easier to break thus making the compound eliminate at a faster rate
does 2,2-dimethylpropane react with chlorine
Yes, 2,2-dimethylpropane can react with chlorine.
When 2,2-dimethylpropane reacts with chlorine gas (Cl2), it forms a chlorinated derivative, usually 2-chloro-2-methylpropane, via an addition reaction. The exact mechanism of the reaction depends on the conditions and may vary, but the general outcome is the formation of a chlorinated product.
It's important to note that the reaction between 2,2-dimethylpropane and chlorine is not a simple or straightforward process and can produce a range of different chlorinated derivatives depending on the reaction conditions.
This type of reaction is known as an addition reaction and is characterized by the addition of atoms or functional groups to a molecule.
The reaction can be initiated by heat, light or a catalyst, such as ultraviolet light or free radicals. The reaction conditions and the presence of a catalyst will influence the exact mechanism of the reaction and the formation of different chlorinated derivatives.
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How do protein, nucleic acid, and polysaccharide molecules polymerize (grow in length)?
A.) by hydrolysis reactions
B.) by oxidation reactions
C.) by condensation reactions
D.) none of these
Protein, nucleic acid, and polysaccharide molecules will polymerize by the condensation reactions.
condensation reaction, are the reactions in which two molecules will combine, usually in the presence of a catalyst, with the elimination of water or some other simple molecules. The combination of the two identical molecules is called as self-condensation. Aldehydes, ketones, esters, alkynes (acetylenes), as well as amines are the several organic compounds that will combine with each other and, except for amines, among themselves to form a larger molecules, many of which are useful intermediate compounds in an organic synthesis. Catalysts commonly used in condensation reactions include acids, bases, the cyanide ion, as well as the complex metal ions.
The shapes of the most biological macromolecules are held in a place largely by the strong covalent bonds that will form between the different parts of the molecule.
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what is the total energy, in kj, of 1.00 mole of photons of orange light whose frequency is 6.75×1014 hz?
One mole of orange light's total energy, measured in kJ, is 2.82 x 10^(-5) J.
The formula E = hf, where h is the Planck constant (6.626 x 10^(-34) J.s), and f is the photon's frequency, gives the energy of a photon. The energy of each photon in orange light with a frequency of 6.75 x 10^ 14 Hz is given by :
E = hf = (6.626 x 10^(-34) * (6.75 x 10^14 Hz)
= 4.48 x 10^-19 J.
Since there are 6.022 x 10^23 photons in a mole of photons (Avogadro's number), the total energy of a mole of orange light photons can be calculated as follows:
1 mole of total energy Energy per photon :
= 1 * 6.022 x 10^23 * 4.48 x 10(^-19) J
= 2.82 x 10^-5 J, where *
The total energy must be divided by 1000 to be converted to kilojoules:
Total energy expressed in kJ is equal to total energy / 1000, or 2.82 x 10^(-5) J / 1000, or 2.82 x 10^(-8) kJ.
A fundamental physics constant known as Planck's constant (h) connects the energy and frequency of a photon. It was first mentioned by Max Planck in 1900 as part of his justification for the way energy is distributed in a blackbody radiator. The Planck constant has a value of roughly 6.626 x 10^-34 J.s, which is a very small amount. Despite the low worth of it.
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4 use the chemical equation and table to answer
4
HCI (aq) + NaOH (aq) -->
NaCl (s) + H₂O (1)
Mass of
HCI
NaOH
NaCl
H₂O
Grams (g)
36.5
40.0
58.5
?
following question.
Which mass of water is expected to be produced in the reaction?
Answer:
the mass of water expected to be produced in the reaction is 18.0g
BeCO3 is soluble or insoluble in water
Answer: Barium carbonate is a white powder. It is insoluble in water and soluble in most acids, with the exception of sulfuric acid.
How much work is required to push a 29-N object
over a distance of 6 meters?
Explanation:
W= F×d
W=29×6
W=174J or 174Nm
