draw the major organic product(s) you would expect from the reaction of the alkyl halide below with na -sch3.

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Answer 1

The product you would expect from the reaction of the given alkyl halide with (1) Na+− SCH3 is given as: (2) Na+− OH (green = Cl).

Describe alkyl halides with an example.

In essence, an alkyl halide has a halogen atom linked to a carbon atom that has undergone sp3 hybridization. Ethyl chloride CH3CH2Cl, propyl bromide CH3CH2CH2Br, etc. are examples of alkyl halides. Alkyl halides, which are found in your blood and react to injury or disease, can be divided into three main groups: primary (1), secondary (2), and tertiary (3).

How is an alkyl halide defined?

Haloalkanes are another name for alkyl halides. Alkyl halides are substances in which halogen atoms have taken the place of one or more hydrogen atoms in an alkane (fluorine, chlorine, bromine or iodine).

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Related Questions

Problem 5: In the figure, the point charges are located at the corners of an equilateral triangle 29 cm on a side. Ia Ic Otheexpertta.com u ψ 25% Part (a) Find the magnitude of the electric field in NC at the location of qa, given that qb-11.5 pC and qe--5.8 μ

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Calculating the vector sum of the electric fields generated by distinct point charges allows one to determine the strength of the electric field at a specific location in space.

The force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them, according to Coulomb's Law, which can be utilised to accomplish this. The total electric field at qa can be computed using Coulomb's Law by first calculating the electric field at qa caused by qb and qc, and then adding those fields vectorially.

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Name the following covalent compound: CCl3



monocarbon trichloride



carbon chloride



carbon trichloride



tricarbon monochloride

Answers

Answer:

The name for CCl3 is carbon tetrachloride.

What causes jet streams to form?

Answers

Answer:

Jet streams form when warm air masses meet cold air masses in the atmosphere. The Sun doesn't heat the whole Earth evenly. That's why areas near the equator are hot and areas near the poles are cold

Carbon monoxide (CO) emissions for a certain kind of car vary with mean 2,9g/mi and standard deviation 0.4g/m. A company has 80 of these cars in its fleet. Let -y (the - is supposed to be over y) represent the mean CO level for the company's fleet.a) What's the approximate model for the distribution of -y (the - is supposed to be over the y)? Explain.b) Estimate the probability that -y (he - is supposed to be over the y) is between 3.0 and 3.1g/mi.c) There is only a 5% chance that the fleet's mean CO level is greater what value?

Answers

By the help of , standard deviation  in first part option c is correct, in second part ,  [tex]P(1.3125 < \bar{y} < 2.5625)=0.0895[/tex],  in third part  [tex]\bar{y}=3.9266[/tex]

The standard deviation, a statistic that describes how evenly distributed a dataset is in regard to its mean, is determined by taking the square root of the variance. The standard deviation can be calculated as the square root of variance by computing the deviation of each data point from the mean. The bigger the deviation within the data collection, the further the data points deviate from the mean; hence, the higher the standard deviation, the more dispersed the data.

we have [tex]\mu=3.795[/tex]and [tex]\sigma=0.6.[/tex]

1.) Approximate of y-bar will be normal distribution with mean [tex]\mu_{\bar{y}}=\mu=3.795[/tex].) and standard deviation equal to[tex]\sigma_{\bar{y}}=\sigma/\sqrt{n}=\frac{0.6}{\sqrt{60}}=0.0775[/tex]So option c is correct with fill in blanks equal to 3.795 g/mi and 0.08 g/mi respectively.

2.) Let us find z-score for 3.9 so

[tex]z=\frac{\bar{y}-\mu_{\bar{y}}}{\sigma_{\bar{y}}}=\frac{3.9-3.795}{0.08}=1.3125[/tex]

and z-score for 4 will be

[tex]z=\frac{\bar{y}-\mu_{\bar{y}}}{\sigma_{\bar{y}}}=\frac{4-3.795}{0.08}=2.5625[/tex]

So [tex]P(1.3125 < \bar{y} < 2.5625)=0.0895[/tex]

3.) From z-table, area right to z-score 1.645 is 0.05.So

[tex]1.645=\frac{\bar{y}-3.795}{0.08} \\\\:\bar{y}=3.9266[/tex]

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how are atomic radii and ionization energy related

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Ionization energy is a function of atomic radius; the larger the radius, the smaller the amount of energy required to remove the electron from the outermost orbital.

How are the atomic radius and ionization energy related?

As shielding increases going over the PT, atomic radii will increase because the shielding effect is acquired stronger which causes the valence electrons to be less attracted to the nucleus, as the atomic radii increases, ionization energy will decrease because it will not grip as much energy to remove valence.

Ionization energy and atomic number. active from left to right across the periodic table, the ionization energy for an atom increases. We can explain this by the whole nuclear charge of the atom. The more protons in the nucleus, the stronger the appeal of the nucleus to electrons.

So we can conclude that The smaller the radius, the higher the ionization energy. This is because the electrons are being held closer to the protons,

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On a cold day the atmosphere temperature is reported as 12. 9F what is the temperature in kelvin ? ( please note that the constant 273. 15 is an exact number

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On a cold day the atmosphere temperature is reported as 12. 9F. The temperature in kelvin is 262.54 °K.

The thermal energy of a substance or system is measured by its temperature. Temperature measurements are most frequently expressed in Celsius (°C), Fahrenheit (°F), and Kelvin (°K) (K).

A straightforward formula is used to convert between degrees Fahrenheit and Kelvin: K = (y °F - 32) x 5/9 + 273.15. The two most widely used and recognized temperature scales are in degrees Fahrenheit and degrees Kelvin.

°K= (Temperature- 32) x 5/9 + 273.15

°K= (12.9°F − 32) × 5/9 + 273.15 = 262.54 °K.

Therefore, the reported temperature of the atmosphere on a cold day is 12. 9F.The temperature in kelvin is 262.54 °K.

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Synaptic potentials are due to the opening of:

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Both excitatory and inhibitory potentials undergo the same initial phase of synaptic potential production. The membrane depolarization brought on by the passage of an action potential opens voltage-gated calcium channels in the presynaptic neuron.

What are the cause of opening of Synaptic potentials?

When all the excitatory and inhibitory inputs combine to bring the neuron's membrane potential to about -50 mV (see diagram), which is referred to as the action potential threshold, action potentials—the basic units of communication between neurons—occur.

Therefore, Variations in the conductance of ion channels in the postsynaptic membrane are also responsible for evoking synaptic potentials, which are the main input signals to which a neuron reacts.

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Both excitatory and inhibitory potentials undergo the same initial phase of synaptic potential production. The membrane depolarization brought on by the passage of an action potential opens voltage-gated calcium channels in the presynaptic neuron.

What are the cause of opening of Synaptic potentials?

When all the excitatory and inhibitory inputs combine to bring the neuron's membrane potential to about -50 mV (see diagram), which is referred to as the action potential threshold, action potentials—the basic units of communication between neurons—occur.

Therefore, Variations in the conductance of ion channels in the postsynaptic membrane are also responsible for evoking synaptic potentials, which are the main input signals to which a neuron reacts.

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a sample of a gas occupies 250. ml at 1.00 atm of pressure. if the pressure increases to 2.00 atm while the temperature stays the same, what is the new volume?

Answers

The new volume is 500. ml.

The relationship between pressure, volume and temperature for a gas at a constant number of moles is given by the Ideal Gas Law, which states:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant and T is the temperature in Kelvin.

Since the number of moles is constant, we can rearrange the Ideal Gas Law to isolate the volume:

V = nRT / P

Plugging in the known values:

V = nRT / P

V = nRT / 2.00 atm

V = (nRT) / (2.00 atm)

V = 250. ml * 2.00 atm / 1.00 atm

The new volume is 500. ml.

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An isentropic process is also: (select all that apply) A.an adiabatic process B.a reversible process C.a process where the change in entropy is zero D.a process where there is no heat added to the system E.a process than can be undone

Answers

Additionally, an isentropic process is one that isn't necessarily adiabatic or reversible.

By adiabatic, what do you mean?

A process that doesn't contain any temperature distribution is known as an asynchronous machine. This does not imply that the temperature is constant; rather, it indicates that no heat is being introduced into or removed from the system.

What are adiabatic and isothermal processes?

When a body is changing its thermodynamic state, an adiabatic process is taking place without any heat being supplied to it. Therefore, the body is adiabatically isolated. An inertial process is a mechanical change in which the body's temperature remains constant.

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Whats the answer for this question

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[tex]Ca(OH)_2[/tex] - 1 Ca atom, 2 O atoms, and 2 H atoms[tex]2BaCl_2[/tex] - 2 Ba atoms and 4 Cl atoms[tex]4H_2SO_4[/tex] - 8 H atoms, 4 S atoms, and 16 O atoms[tex]KNO_3[/tex] - 1 K atom, 1 N atom, and 3 O atoms[tex]3 Al_2(SO_4)_3[/tex] - 6 Al atoms, 9 S atoms, and 36 O atoms

Number of atoms in compounds[tex]Ca(OH)_2[/tex] contains 1 calcium atom, 2 oxygen atoms, and 2 hydrogen atoms.[tex]2BaCl_2[/tex] contains 2 barium atoms and 4 (2x2) chlorine atoms[tex]4H_2SO_4[/tex] contains 8 (4x2) H atoms, 4 S atoms, and 16 (4x4) O atoms[tex]KNO_3[/tex] contains 1 potassium atom, one nitrogen atom, and 3 oxygen atoms[tex]3 Al_2(SO_4)_3[/tex] contains 6 (3x2) aluminum atoms, 3 sulfur atoms, and 36 (3x4x3) oxygen atoms

In other words, the total number of a particular atom is the product of its subscript (s) and the coefficient of the chemical formula of the compound.

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why does nh3 displace h20

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Cu(NH3)4synthesis  2+ Compared to H2O, NH3 has more lone electron pairs. H2O is a weaker Lewis base than NH3. More quickly than H2O, NH3 may give a single pair of electrons.

Describe three electron-related facts.

The outside of the nucleus is surrounded by electrons, which are negatively charged particles. Scientists may have trouble observing them since they rotate so quickly.

What does an electron example actually mean?

The electron is the tiniest atom-forming particle or a carrier of the a negative charge. Protons and electrons are both present in equal numbers in a neutral atom. For example, the hydrogen atom only has one proton and one electron. The uranium atom was unique due to its 92 protons & 92 electrons.

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The following cation has a total of how many resonance structures?A.4. B.2 C.5 D.3

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The following cation chlorobenzene having a 5 resonating structures.

Resonance structure: These are the group of the two or more Lewis structures which collectively represent a single polyatomic species ' electronic bonding including fractional bonds as well as fractional charges.

Chlorobenzene is an aromatic organic compound having chemical formula C6H5Cl. This colorless, flammable liquid is a common solvent and it is widely used as an intermediate in the manufacture of other chemicals.

In chlorobenzene, the lone pair present in the chlorine atom shows the resonance with the benzene ring which gives result in an increase in the electron density on the benzene ring which is followed by an increase in its reactivity towards the electrophiles.

--The given question is incomplete, the complete question is

"How many resonance structures are possible in chlorobenzene?A.4. B.2 C.5 D.3"--

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What is the Index Value for an exposure of low?

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The concept is to provide diagnostic images using the optimal amount of radiation. If the index is too low, it may indicate poor image quality. If the dose index is too high, it may mean using more radiation than is needed for imaging.

Various Kinds of Index Numbers

There are three kinds of index numbers, namely:

a. Price index figures, namely comparative figures to measure price changes from one period to another.

b. Number index (quantity), which is a comparison number to measure changes in the amount from one period to another.

c. Value index number, which is a comparison number to measure changes in value from one period to another. Value is calculated by multiplying the price by the amount (quantity).

Your question is incomplete but most probably your full question was:

Explain. What is the Index Value for an exposure of low?

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Classify these substances as molecular or ionic. glucose C6H12O6, water H2O, calcium oxide CaO , chlorine Cl2 , silver nitrate AgNO3, potassium chloride, KCI methane CH4, barium sulfate, Baso4, ammonia, NH3 sodium hydroxide, NaOH copper sulfide, Cus

Answers

Molecular substances are substances composed of molecules, which are formed by the combination of atoms through covalent bonds.

The classification of the substances as molecular or ionic is as follows:

Molecular: Glucose, Water, Chlorine, Methane, Ammonia, Copper sulfide

Ionic: Calcium oxide, Silver nitrate, Potassium chloride, Barium sulfate, Sodium hydroxide.

In a molecular substance, atoms share electrons to form stable molecular structures. Unlike ionic compounds, where ions are held together by electrostatic forces, molecular substances have atoms held together within a molecule by covalent bonding.

These substances tend to have lower melting and boiling points compared to ionic compounds. This is because the intermolecular forces between molecules, such as van der Waals forces or hydrogen bonding, are weaker than the strong electrostatic forces between ions. Consequently, molecular substances often exist as gases, liquids, or solids with relatively low melting points.

Molecular substances consist of covalently bonded atoms, whereas ionic substances contain ions held together by electrostatic forces.

Therefore, the classification of the substances as molecular or ionic is as follows:

Molecular: Glucose, Water, Chlorine, Methane, Ammonia, Copper sulfide

Ionic: Calcium oxide, Silver nitrate, Potassium chloride, Barium sulfate, Sodium hydroxide.

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Methylamine (CH3NH2) is a weak base with a Kb = 4.38 x 10-4. What is the pH of a 0.037 M solution of methylamine?

Answers

The pH of a 0.037 M solution of methylamine is 4.97.

The Kb value and the amount of methylamine present in the solution can be used to calculate the pH of a methylamine solution. As a weak base, methylamine interacts with water to produce the ions methylammonium (CH3NH3+) and hydroxide (OH) (OH-). The concentration of the hydroxide ion in solution can be determined using the equilibrium constant for this reaction, Kb:

Kb = [CH3NH3+] × [OH-] / [CH3NH2]

Since the concentration of methylamine is known, the concentration of the hydroxide ion can be calculated:

Kb = [OH-[tex]]^{2}[/tex] / [CH3NH2]

[OH-] = sqrt(Kb × [CH3NH2]) = sqrt(4.38 x [tex]10^{-4}[/tex] × 0.037) = 1.07 x [tex]10^{-5}[/tex] M

The pH of the solution can be calculated using the concentration of the hydroxide ion:

pH = -log([OH-]) = -log(1.07 x [tex]10^{-5}[/tex]) = 4.97

So, the pH of a 0.037 M solution of methylamine is 4.97.

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What is Barium Hydroxide?

Answers

Barium hydroxide is a chemical compound with the chemical formula Ba(OH)2

What are compounds ?

A  compound is a substance consisting of two or more elements chemically combined in a fixed ratio. They differ from mixtures consisting of  two or more substances physically mixed without chemical bonding. Compounds have their own physical and chemical properties that differ from those of individual elements. For example, the compound water (H2O) has different properties (boiling point, density, solubility, etc.) than its components hydrogen (H2) and oxygen (O2).

Compounds are formed by chemical reactions in which atoms of different elements combine to form new substances. The formation of a compound can be represented by a chemical formula that indicates the type and number of atoms in the compound.

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A student studying the decomposition of hydrogen peroxide noticed that the rate at which oxygen gas collected was noticably slower after the reaction had been running for several minutes than it was when the reaction was first started. Select the best answer from the list of statements.

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The best answer from the list of statements is: The student noticed that the rate at which oxygen gas collected was noticeably slower after the reaction had been running for several minutes than it was when the reaction was first started.

A chemical reaction is a process in which atoms or molecules interact to form new substances with different chemical properties. During a chemical reaction, bonds between atoms are broken and new bonds are formed to create different molecules. Chemical reactions involve the rearrangement of atoms to form new compounds and release energy in the form of heat, light, or sound. Chemical reactions usually involve the exchange of electrons between atoms, resulting in the formation of new compounds. Chemical reactions are also affected by external factors such as temperature, pressure, and the presence of a catalyst.

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why are elements in group 4-a not undergo ionic bonding? do they even form bonds?

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The elements in group 4-a not undergo ionic bonding as the do not forms the ion. Yes they do forms bond , they form covalent bonds.

The elements in group 4 (a) do not undergo the ionic bonding as the do not forms the ion. Yes they do forms bond , they form covalent bonds. The ionic bond forms between the positively charged ion and the negatively charged ion. The 4 (a) element do not form the ions.

They forms the covalent bond. The covalent bond forms between the atoms by the sharing of the electrons. The compounds formed by the covalent bond is called as the covalent compound.

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what is the charge of the common ion formed by each of these atoms?

Answers

Sulfur (S): -2, Bromine (Br): -1, Iodine (I): -1, Lithium (Li): +1, Strontium (Sr): +2, Magnesium (Mg): +2, Sodium (Na): +1, Cesium (Cs): +1, Barium (Ba): +2, Fluorine (F): -1, Oxygen (O): -2.

Charges are based on gaining or losing electrons to achieve stable electron configurations.

We have,

To determine the charge of the common ion formed by each of these atoms, you need to consider their position on the periodic table and their tendency to gain or lose electrons to achieve a stable electron configuration.

Sulfur (S): -2 (gains 2 electrons to form S²⁻)

Bromine (Br): -1 (gains 1 electron to form Br⁻)

Iodine (I): -1 (gains 1 electron to form I⁻)

Lithium (Li): +1 (loses 1 electron to form Li⁺)

Strontium (Sr): +2 (loses 2 electrons to form Sr²⁺)

Magnesium (Mg): +2 (loses 2 electrons to form Mg²⁺)

Sodium (Na): +1 (loses 1 electron to form Na⁺)

Cesium (Cs): +1 (loses 1 electron to form Cs⁺)

Barium (Ba): +2 (loses 2 electrons to form Ba²⁺)

Fluorine (F): -1 (gains 1 electron to form F⁻)

Oxygen (O): -2 (gains 2 electrons to form O²⁻)

Charges are determined based on the number of valence electrons and the tendency to gain or lose electrons to achieve a full valence electron shell. Metals tend to lose electrons to form positive ions (cations), while non-metals tend to gain electrons to form negative ions (anions).

Thus,

Sulfur (S): -2, Bromine (Br): -1, Iodine (I): -1, Lithium (Li): +1, Strontium (Sr): +2, Magnesium (Mg): +2, Sodium (Na): +1, Cesium (Cs): +1, Barium (Ba): +2, Fluorine (F): -1, Oxygen (O): -2.

Charges are based on gaining or losing electrons to achieve stable electron configurations.

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The complete question:

What is the charge of the common ion formed by each of these atoms? Either -2,-1,+1, or +2.

S, Br, I, Li, Sr, Mg, Na, Cs, Ba, F, and O

How are these changes found?

why does temperature affect voltage in a galvanic cell

Answers

It was predicted based on the Nernst equation experiment that the temperature would rise while the voltage generated by the electrolytic cell would drop.

What can you infer from the Nernst equation?

The relationship between the ion concentrations on each side of a membrane that is completely selective for just that ion and the dc voltage (voltage) that will be recorded across that membranes under adaptation options is defined by this equation.

Simply put, what does the Nernst equation mean?

The reduction potential of an atom or ion, as measured at any circumstances, may be equated with the reduction potential as measured under realistic conditions of 298K but one molar or one air pressure using the Nernst equation.

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what is the total volume of the CO2(g) and H2O(g) at 600 degree Celsius and 0.888 atm produced by the combustion of 1.00L of C2H6(g) measured at STP.

Answers

The total volume of CO2(g) and H2O(g) produced by the combustion of 1.00L of C2H6(g) at 600 degree Celsius and 0.888 atm is approximately 2.86 L measured at STP.

The combustion of C2H6(g) is a chemical reaction in which the hydrocarbon (C2H6) reacts with oxygen to produce CO2(g) and H2O(g) as the main products. The balanced equation for this reaction is:

C2H6(g) + 7/2 O2(g) -> 2 CO2(g) + 3 H2O(g)

According to the ideal gas law (PV = nRT), the volume of a gas is proportional to its temperature and pressure. Therefore, to find the total volume of CO2(g) and H2O(g) produced at 600 degree Celsius and 0.888 atm, we need to convert these conditions to the standard temperature and pressure (STP), which is defined as 0 degree Celsius and 1 atm.

First, we calculate the number of moles of C2H6(g) consumed in the reaction by using the Ideal Gas Law:

PV = nRT

Where:

P = 0.888 atm

V = 1.00 L

R = 8.31 J/mol*K

T = (600 + 273) K

n = (PV)/(RT) = (0.888 * 1.00)/(8.31 * (600 + 273)) = 0.0257 moles

Next, we use the mole ratios from the balanced chemical equation to find the number of moles of CO2(g) and H2O(g) produced:

n(CO2) = 2 * 0.0257 = 0.0514 moles

n(H2O) = 3 * 0.0257 = 0.0771 moles

Finally, we use the Ideal Gas Law to find the volume of CO2(g) and H2O(g) at STP:

V = nRT/P

Where:

P = 1 atm

T = 273 K

V(CO2) = n(CO2) * R * T/P = 0.0514 * 8.31 * 273/1 = 12.06 L

V(H2O) = n(H2O) * R * T/P = 0.0771 * 8.31 * 273/1 = 17.80 L

The total volume of CO2(g) and H2O(g) is the sum of their individual volumes, which is approximately 2.86 L.

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Why do you extract the styrene with NaOH?

Answers

To get rid of any impurities and inhibitors of polymerization.

Describe styrene?

The petroleum products that are used to generate these items are the main source of Styrene after fractional distillation to remove the olefins and aromatics necessary for the chemical components to produce Styrene, which is a translucent organic liquid hydrocarbon. Styrene, likewise referred to as High Impact Expandable plastic polystyrene is a cheap, lightweight, and convenient material to transport. Plastics, polyesters, latex paints and coatings, synthetic rubber, and styrene-alkyd coatings are the main applications for styrene. These materials have several uses in the construction, packaging, automotive, and home goods industries.High levels of styrene in the air can disrupt your ability to see colour, make you feel fatigued or inebriated, slow down your reaction time, make you lose focus, and affect your balance. Extremely high styrene concentrations resulted in animals exhibiting hearing loss. Workers who are exposed to styrene risk health problems. Prior to usage, styrene was purified using extractions with a 5 weight percent aqueous solution of sodium hydroxide (NaOH) to get rid of any impurities and polymerization inhibitors, and then with distilled water to get rid of any NaOH that was still present. Drying with anhydrous Na2SO4 was then done.

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Sodium hydroxide (NaOH) is used to extract styrene from aqueous solutions because it acts as a base, which reacts with the acidic styrene molecules to form sodium styrenate, which is soluble in water. This allows for the styrene to be easily separated and removed from the solution.

What is styrene?

The petroleum products that are used to generate these items are the main source of Styrene after fractional distillation to remove the olefins and aromatics necessary for the chemical components to produce Styrene, which is a translucent organic liquid hydrocarbon. Styrene, likewise referred to as High Impact Expandable plastic polystyrene is a cheap, lightweight, and convenient material to transport. Plastics, polyesters, latex paints and coatings, synthetic rubber, and styrene-alkyd coatings are the main applications for styrene.

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how much larger is a uranium nucleus compared to an iron nucleus

Answers

The larger is a uranium nucleus as compared to an iron nucleus is the radius of the uranium is  7.4  × 10⁻¹⁵ m and the iron is 4.59 × 10⁻¹⁵ m .

The average radius of the nucleus with A nucleons is R = R0 A1^/3,

where ,

R0 = 1.2 × 10⁻¹⁵ m.

A = number of protons + number of nucleons

The Radius = R = R0 A1^/3

The radius of Iron = 56

The Radius = R = 1.2 × 10⁻¹⁵ m (56)¹/³

The Radius = 4.59 × 10⁻¹⁵ m

The Radius of the Uranium = 235

The Radius = R = 1.2 × 10⁻¹⁵ m (235)¹/³

The radius = 7.4  × 10⁻¹⁵ m

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a student uses a graduated cylinder and a balance to determine the density of ethanol in three trials. the data from this process are shown below. the actual density of ethanol is 0.789 g/ml.

Answers

The average of the three trials is 0.791 g/ml, which is close to the actual density of ethanol (0.789 g/ml).

What is the ethanol ?

Ethanol is an organic chemical compound, also known as ethyl alcohol, that is found in alcoholic beverages and has many uses in industry. It is produced by the fermentation of sugar and starches, such as corn and wheat, and is often used as an additive in gasoline. Ethanol has a variety of practical applications, including being used as a solvent, a fuel, an antiseptic and a preservative. It is also used in the manufacture of perfumes, paints, solvents, plastics and pharmaceuticals.

Trial 1: Mass = 42.3 g, Volume = 53.5 ml

Density: 42.3 g / 53.5 ml = 0.791 g/ml

Trial 2: Mass = 42.1 g, Volume = 53.4 ml

Density: 42.1 g / 53.4 ml = 0.790 g/ml

Trial 3: Mass = 42.2 g, Volume = 53.3 ml

Density: 42.2 g / 53.3 ml = 0.792 g/ml

The average of the three trials is 0.791 g/ml, which is close to the actual density of ethanol (0.789 g/ml).

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why is a crystal of pure calcium carbonate made in a lab not a sample of the mineral's calcite?

Answers

Explanation:

It didn't form naturally and the carbonate calcium was found in caves.

Enthalpy of solution for MgSO4(s) and MgSO47H2O (s) are -20.3kcal and 4.8kcal. Calculate hydration enthalpy of MgSO4

Answers

[tex]$$\mathrm{MgSO}_{4(\mathrm{~s})} \stackrel{\Delta \mathrm{H}_{\mathrm{s}_1}}{\longrightarrow} \mathrm{MgSO}_4 \cdot 7 \mathrm{MH}_2^{+2} \mathrm{O}+\mathrm{SO}_{4(\mathrm{aq})}^{2-}$$$\\\therefore \quad \Delta \mathrm{H}_{\mathrm{s}_1}=\Delta\\\mathrm{H}_{\mathrm{Hyd}}+\Delta\mathrm{H}_{\mathrm{s}_2}$$\\\therefore \quad-20.3=\Delta \mathrm{H}_{\mathrm{Hyd}}+4.8$$\\\therefore \quad \Delta \mathrm{H}_{\mathrm{Hyd}}=-25.1 \mathrm{kcal} / \mathrm{mole}$[/tex]

The change in enthalpy that occurs when one mole of a gaseous ion dissolves in enough water to generate an infinitely diluted solution under a typical environment of 1 bar pressure is known as the hydration enthalpy (HHyd) (infinite dilution means a further addition of solute will not cause any heat change).

Enthalpy of hydration can be defined as the quantity of energy released upon dilution of one mole of gaseous ions in simple terms. With water acting as the solvent, it can be compared to the enthalpy of solvation. Also known as hydration energy, enthalpy of hydration has a constant negative value.

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based on the brønsted-lowry theory of acids and bases, which of the following species can act as both a conjugate acid and a conjugate base?

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Since water is amphoteric, it can function as both a Brnsted-Lowry acid and a base. In aqueous solution, strong acids and bases totally ionize, whereas weak acids and bases only partially do so.

What is the brønsted-lowry theory of acids and bases?

The acid-base theory of Bronsted-Lowry. The base is a substance that takes a H + ion or a proton to generate its conjugate acid, and the acid is The Bronsted-Lowry theory states that a chemical transfers a proton or a H + ion to create its conjugate base.

The species created after an acid donates a proton is known as the conjugate base of a Brnsted-Lowry acid.

Therefore, A material known as the Brønsted-Lowry base is one that may take up a proton or H+ ion from other substances. A base reforms when a conjugated acid donates a proton.

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Since water is amphoteric, it can function as both a Brnsted-Lowry acid and a base. In aqueous solution, strong acids and bases totally ionize, whereas weak acids and bases only partially do so.

What is the brønsted-lowry theory of acids and bases?

The acid-base theory of Bronsted-Lowry. The base is a substance that takes a H + ion or a proton to generate its conjugate acid, and the acid is The Bronsted-Lowry theory states that a chemical transfers a proton or a H + ion to create its conjugate base.

The species created after an acid donates a proton is known as the conjugate base of a Brnsted-Lowry acid.

Therefore, A material known as the Brønsted-Lowry base is one that may take up a proton or H+ ion from other substances. A base reforms when a conjugated acid donates a proton.

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isonitriles (a) are an important clss of compounds

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The family of compounds known as isonitriles, or cyanamides, is distinguished by the presence of a nitrogen atom bound to a carbon atom and a cyano group (-CN) on the nitrogen.

They contain the chemical formula R-NC and are regarded as a significant class of compounds because of their distinctive characteristics and diverse range of uses. Isonitriles are helpful in the synthesis of several chemicals because of their great thermal stability, low reactivity, and insoluble nature in the majority of solvents. Additionally, they serve as ligands in coordination chemistry and as intermediates in the production of organic compounds. Isonitriles are employed in the production of several medications, therefore they have a significant impact on the pharmaceutical sector as well. Due to their distinct characteristics and wide range of uses in industries including chemistry, pharmacology, and materials research, isonitriles are a significant family of substances.

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in the structure shown below, how many lone pairs of electrons does the nitrogen atom bear? (enter an.swer as a number.)

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The nitrogen atom in the diagram has three lone pairs of electrons. The nitrogen atom in the structure has three lone pairs, or non-bonding electrons. Lone pairs are electron pairs.

in a molecule that do not form bonds with other atoms. Nitrogen, for example, contains five valence electrons and may create up to three covalent bonds. The nitrogen atom in the diagram has three lone pairs of electrons. The nitrogen atom in the structure has three lone pairs, or non-bonding electrons. Lone pairs are electron pairs. When nitrogen makes three bonds, the leftover electrons become non-bonding pairs, resulting in three lone pairs. The amount of lone pairs on an atom is critical for influencing its molecular geometry and reactivity.

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__________ is formed when hydrogen is oxidised during combustion. What one word completes the sentence?

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When hydrogen atoms are present in a fuel, they are oxidised to water.

The combustion reactions are commonly exothermic redox reactions between an oxidant and a fuel. When hydrogen is oxidized during combustion it forms water.

What is combustion?

A chemical reaction in which a fuel undergoes oxidation by reacting with an oxidizing agent which results in the release of energy generally in the form of heat is called the combustion. The product formed as a result of the combustion is usually an oxidized fuel.

It is not unfamiliar that the combustion reactions are accompanied by the flames. It is very important to note that not all combustion reactions result in fires. The complete combustion reactions can sometimes referred to as clean combustion reactions.

The combustion reaction of hydrogen is given as:

2H₂ + O₂ → 2H₂O

When hydrogen is oxidized, it results in the formation of water. When hydrogen atoms are present in a fuel, they are oxidized to water.

Thus water is formed when hydrogen is oxidized.

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