B) There are strong repulsive forces between the gas molecules. Strong repelling forces exist between the gas molecules, which do not exist in an ideal gas.
The statement in option (B), "There are significant repulsive interactions between the gas molecules," DOES NOT apply to a perfect gas. There are no substantial intermolecular forces, either attracting or repulsive, between the gas molecules in a ideal gas. Because of this, gas molecules may travel unimpeded and independently of one another, clash with one another and with container walls, and do so only through elastic collisions. Other possibilities include having a minimal molecular volume (C), adhering to the ideal gas equation (D), and having an inverse connection between average kinetic energy and absolute temperature (E).
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if the percentage of oxygen (by mass) in an unknown compound is 35.53% and there are 4 atoms per molecule. what is the molar mass of the unknown compound
Molar mass, which is measured in grammes per mole units, is the mass of one mole of a substance. The unknown compound's molar mass is 226.2 g/mol plus the molar masses of any additional elements it may contain.
We can first calculate the mass of the oxygen in one mole of the chemical to obtain the molar mass of the unknown compound: The chemical has 35.53 g of oxygen per mole. Oxygen has an atomic mass of 16.00 g/mol. As a result, there are 2.2206 moles of oxygen in a mole of the molecule, or 35.53 g / 16.00 g/mol. As there are 4 atoms per molecule, the following formula can be used to determine the molar mass of the unknown compound: Molar mass = (35.53 g + molar mass of other elements) / 2.2206 mol * 4 atoms/molecule. Molar mass = (35.53 g / 2.2206 mol * 4) + molar mass of other elements is the result of solving for the molar mass of the unidentified substance. Molar mass is equal to 226.2 g/mol plus the molar mass of other elements. Therefore, The unknown compound's molar mass is 226.2 g/mol plus the molar masses of any additional elements it may contain.
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what are the ultimate origins of coal, oil, and natural gas? which fuel is in greatest reserve abundance
Answer:
Coal, oil, and natural gas are all fossil fuels that were formed from the remains of plants and animals that lived millions of years ago.
Coal was formed from the remains of plants that grew in vast swamps and bogs during the Carboniferous period, about 300 million years ago. Over time, these plants were buried by sediment and subjected to heat and pressure, which transformed them into coal.
Oil and natural gas were formed from the remains of tiny marine organisms, such as plankton and algae, that lived in the oceans and seas hundreds of millions of years ago. When these organisms died, their remains sank to the bottom of the ocean and were buried by sediment. Over time, heat and pressure transformed the organic material into oil and natural gas.
In terms of reserve abundance, natural gas is currently in the greatest supply. According to the US Energy Information Administration (EIA), global natural gas reserves were estimated at 198 trillion cubic meters as of January 2022. This is followed by oil, with global reserves estimated at 1.73 trillion barrels, and coal, with global reserves estimated at 1.03 trillion short tons. However, it's important to note that the availability and distribution of these resources can vary widely by region, and factors such as extraction costs, market demand, and environmental regulations can all influence their commercial viability.
If 18 grams of carbon react with oxygen to produce carbon dioxide, How many molecules of Carbon molecules of oxygen would be required?
a. 1.5 molecules
c. 9.0 X 102 molecules
d. 3.2 X 10 molecules
b. 48 molecules
The number of molecules of carbon molecules of oxygen that would be required is 9.03 × 10²³ molecules.
How to calculate number of molecules?The number of molecules of a substance can be calculated by multiplying the number of moles by Avogadro's number as follows:
no of molecules = no of moles × 6.02 × 10²³
According to this question, if 18 grams of carbon react with oxygen to produce carbon dioxide. The number of moles of carbon can be calculated as follows:
no of moles of carbon = 18g ÷ 12g/mol = 1.5 moles
no of molecules = 1.5 moles × 6.02 × 10²³
no of molecules = 9.03 × 10²³ molecules
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which response lists all the following pairs that are miscible liquids? i. hexane (c6h14) and water ii. methanol (ch3oh) and water iii. octane (c8h18) and carbon tetrachloride (ccl4) group of answer choices ii and iii iii only i and iii ii only i and ii flag question: question 7
Pairs which are miscible liquids is ii)methanol(CH₃OH) and water and iii)octane(C₈H₁₈) and carbon tetrachloride(CCl₄).So,correct options are ii and iii.
Miscible liquids are liquid substances that can blend in all extents to frame a homogeneous arrangement. All in all, miscible liquid structure when two fluids completely disintegrate in one another at any concentration.The expression miscibility portrays this capacity to blend in with one another, and this term is for the most part utilized with fluids, yet it might have applications seeing solids and gases also.
For instance, miscibility of water and ethanol is normal where water and ethanol go about as miscible liquids by blending in with one another in every conceivable extent. While considering natural mixtures, the weight level of hydrocarbon binds will generally decide the miscibility of the natural compound with water. For example ethanol contains two carbon iotas where 1-butanol contains four carbon molecules (both are alcohols), yet ethanol is miscible with water while 1-butanol isn't.
Frequently, the miscibility of liquids is resolved optically. In the event that the two liquids consolidate and make a reasonable fluid, the two liquids are miscible with one another. On the off chance that the consolidated liquids seem overcast in the wake of blending, those fluids are immiscible with one another.
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(Complete question) is:
Which response lists all the following pairs that are miscible liquids.?
i. hexane (C₆H₁₄) and water ii. methanol (CH₃OH) and water iii. octane (C₈H₁₈) and carbon tetrachloride (CCl₄) iv)all of these
sort these nucleotide building blocks by their name or classification.
Depending on the molecule's chemical composition, they can be purines or pyrimidines.
Nucleotide building blocks are the monomers (single molecules) that make up nucleic acids, such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). They are classified as either purines or pyrimidines, depending on the chemical structure of the molecule.
Purines: Adenine (A), Guanine (G)
Pyrimidines: Cytosine (C), Thymine (T), Uracil (U)
Sorted by name: Adenine (A), Cytosine (C), Guanine (G), Thymine (T), Uracil (U)
Sorted by classification: Purines: Adenine (A), Guanine (G) Pyrimidines: Cytosine (C), Thymine (T), Uracil (U).A nucleotide is the basic structural unit of nucleic acids such as DNA and RNA.
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complete question:sort these nucleotide building blocks by their name or classification. from below image
what gas is formed as a result of the sodium bicarbonate wash? write a balanced equation accounting for the formation of this gas,
The correct answer is Carbon Dioxide is formed as a result of the sodium bicarbonate wash.
Each of the molecules of carbon dioxide, with the chemical formula CO2, has one carbon atom covalently doubly bonded to two oxygen atoms. It occurs in the gas state at room temperature. Carbon dioxide acts as a greenhouse gas in the atmosphere because it absorbs infrared light rays despite being transparent to visible light. From pre-industrial levels of 280 parts per million (ppm) to a trace gas of 421 ppm, or nearly 0.04% by volume, it has grown (as of May 2022). [9] [10] The combustion of fossil fuels is the primary cause of both these high CO2 concentrations and climate change. Dissolved carbon dioxide is present in the ocean, ice caps, lakes, and groundwater.
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If 20mL of glacial acetic acid is diluted with water to a total volume of 80mL, what is the percent by volume of the acetic acid in the solution?
The percent concentration is 25%.
What is percent by volume?Percent by volume (also known as volume percent or percent by volume ) is a measure of the concentration of a solute in a solution expressed as a percentage of the total volume of the solution. It is calculated by dividing the volume of the solute by the total volume of the solution and multiplying by 100.
The percent by volume;
Volume of acetic acid/Total volume * 100
= 20 mL/80 mL * 100/1
= 25%
\It's important to note that percent by mass is not the same as percent by volume.
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Calculate the pH of a solution prepared by mixing 15.0 mL of 0.50 M NaOH and 30.0 mL of 0.50 M benzoic acid solution. (Benzoic acid is monoprotic; its dissociation constant is 6.5 x 10-5.)
Which of the following can be classified as a weak electrolyte?
a. Hydrofluoric acid (HF)
b. Hydrochloric acid (HCl)
c. Bromide (HBr)
d. Hydrogen iodide (HI)
Hydrofluoric acid (HF), and Bromide (Br-) are weak electrolyte, according to the options given. Hence the correct option is (a), and (c) respectively.
A weak electrolyte is a substance that only partially dissociates into ions when dissolved in a solvent. The extent of dissociation depends on the concentration of the electrolyte in the solution and the strength of the bond between the ions.
Based on this definition, the following substances can be classified as weak electrolytes:
a. Hydrofluoric acid (HF) - Hydrofluoric acid is a weak acid that only partially dissociates into ions in aqueous solution.
c. Hydrogen Bromide (HBr) - Hydrogen Bromide is a weak base that dissociates only slightly in water.
On the other hand, the following substances are strong electrolytes and dissociate completely into ions when dissolved in water:
b. Hydrochloric acid (HCl) - Hydrochloric acid is a strong acid that dissociates completely into hydrogen (H+) and chloride (Cl-) ions in water.
d. Hydrogen iodide (HI) - Hydrogen iodide is a strong acid that dissociates completely into hydrogen (H+) and iodide (I-) ions in water.
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f the volume of the reaction vessel in the previous part was 1.25 l , what amount of br2 (in moles) was formed during the first 15.0 s of the reaction?
The amount of the Br₂ in moles was formed during the first 15.0 s of the reaction is 0.0396 mol.
The rection is as :
2HBr ---> H₂ + Br₂
The rate of disappearance of HBr = - (1/2) d[HBr] / dt
The rate of formation of H₂ = + (1/ 2 )d [H₂ ] / dt
The rate of formation of Br₂ = + (1/2) [ Br₂] / dt
Average rate = - (1/2) d[HBr] / dt
= - (1/2) ( 0.512 - 0.600 ) / (25 - 0 )
= 0.00176 M/s
d[ Br₂] / dt = 0.00176 M/s
[ Br₂] = 0.0264 M
The moles of Br₂ = 0.0264 × 1.25
= 0.0396 mol
This question is incomplete, the complete question is :
Consider the reaction. 2 HBr(g) ¡ H2(g) + Br2(g) a. Express the rate of the reaction in terms of the change in concentration of each of the reactants and products. b. In the first 25.0 s of this reaction, the concentration of HBr drops from 0.600 M to 0.512 M. Calculate the average rate of the reaction during this time interval.c. If the volume of the reaction vessel in part b is 1.50 L, what amount of Br2 (in moles) forms during the first 15.0 s of the reaction?
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Which would be an invalid listing within an electron configuration?
As in: a) 2s2 b) 5d9 c) 3p4 d) 1s3
The correct option is d.)1s3 Explanation s- orbital can hold a maximum of 2 electrons.
1s3- There is only one s orbital per energy level, and each orbital can hold a maximum of two electrons, so there can not be 3s electrons at any energy level. The Aufbau principle dictates the manner in which electrons are filled in the atomic orbitals of an atom in its ground state.
It states that electrons are filled into atomic orbitals in the increasing order of orbital energy level. According to the Aufbau principle, the available atomic orbitals with the lowest energy levels are occupied before those with higher energy levels.
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Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar?A) Mg > Na > P > Si > Ar B) Ar > Si > P > Na > Mg C) Si > P > Ar > Na > Mg D) Na > Mg > Si > P > Ar E) Ar > P > Si > Mg > Na
The correct order for atomic radius for Mg, Na, P, Si, and Ar is:
D) Na > Mg > Si > P > Ar.
The atomic radius is the distance from the center of an atom to the outermost shell of electrons. Atomic radius generally increases as you move down a group and from right to left across a period in the periodic table.
Na and Mg are in the same period (row) of the periodic table, but Na has a larger atomic radius than Mg because Na has one more energy level than Mg. Si has a smaller atomic radius than Mg because Si is located to the right of Mg in the same period, and moving from left to right across a period, atomic radius generally decreases. P has a larger atomic radius than Si because P is located one row below Si, and moving down a group, atomic radius generally increases. Finally, Ar has the smallest atomic radius because it is a noble gas and its valence shell is completely filled with electrons, making it difficult to add more electrons.
Therefore, the correct order of atomic radius for these elements is Na > Mg > Si > P > Ar.
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In a dynamic equilibrium between the liquid state and the gas state, what is true about the rate of evaporation?
A. The rate of evaporation cannot be determined.
B. It is greater than the rate of condensation.
C. It is equal to the rate of condensation
D. It is less than the rate of condensation
It is true that the rate of evaporation is equal to the rate of condensation in a dynamic equilibrium between the liquid state and the gas state.
Since the rate of evaporation is not zero, the vapour pressure increases until the evaporation and condensation rates are equal. The partial pressure of vapour in the container equals the equilibrium vapour pressure of the liquid at this time, indicating that the system is in dynamic equilibrium.
At the liquid water-air interface, the opposing processes of evaporation and condensation take place concurrently. The number of water molecules that transform from liquid to gas each second is the rate of evaporation. The temperature of the liquid water has a major role in determining the rate of evaporation. The rate of evaporation increases with the temperature of the liquid water.
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what is the difference between a saturated hydrocarbon and an unsaturated hydrocarbon?
Saturated hydrocarbons and unsaturated hydrocarbons are two types of organic compounds that differ in the number and arrangement of their carbon-carbon bonds.
Saturated hydrocarbons, also known as alkanes, contain only single bonds between the carbon atoms in their molecular structure. They are said to be "saturated" because they contain the maximum number of hydrogen atoms that can be bonded to the carbon atoms. As a result, they have a linear or branched chain structure, and they are solid or semi-solid at room temperature. Examples of saturated hydrocarbons include methane (CH4), ethane (C2H6), and propane (C3H8).Unsaturated hydrocarbons, on the other hand, contain one or more double or triple bonds between their carbon atoms. This means that they have fewer hydrogen atoms bonded to their carbon atoms than is possible in a saturated hydrocarbon.
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Which of the traits present in the plant shown here is entirely passed from one generation to the next?
A. the amount of seeds that survive being eaten by herbivores
B. the number of other plants that compete for water
C. the length of the spines that it produces
D. the amount of sunlight it receives
Answer:
The length of the spines that it produces is the trait that is entirely passed from one generation to the next.
Answer:
C. the length of the spines that it produces
which features make H2O a polar molecule? select all that apply
-the molecule has a bent molecular shape
-the molecule has an uneven distribution of electron density
-the electrons are distributed unevenly within each bond of the molecule
-each H2O molecule has a different shape
-the molecule is electrically charged
The features that make H₂O a polar molecule are:
The molecule has a bent molecular shape.The molecule has an uneven distribution of electron densityThe electrons are distributed unevenly within each bond of the moleculeWhat is a polar covalent bond?It is a bond that occurs when the bonding atoms have a difference in electronegativity causing the generation of an area with higher electron density creating a positive pole and a negative pole.
The oxygen atom in water has a partial negative charge, while the hydrogen atoms have a partial positive charge. This results in an overall dipole moment, with the molecule having a slightly positive end and a slightly negative end.
H₂O is a polar molecule due to its bent molecular shape, an uneven distribution of electron density, and uneven electron distribution within each bond of the molecule. This results in an overall electrical charge for the molecule.
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where are voltage-gated sodium and potassium channels generally found in neurons?
Voltage-gated sodium and potassium channels are generally found in neurons the axon origin of spinal cord.
All cells have an electrical implicit difference, or membrane eventuality, across tube membrane. the electrical implicit difference across tube membrane is a function of ions attention in the intracellular and extracellular results and of the picky permeabilities of ions.
In general, voltage-gated sodium( Nav) and voltage-gated potassium( Kv1 and KCNQ) channels are located in the axon, and Kv2, Kv4, and hyperpolarization- actuated cyclic nucleotide-gated channels( HCNs) are located in the dendrites. There are exceptions; for illustration, different types of voltage-gated calcium( Cav) channels and Kv3 channels are distributed in the axon and dendrites.
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calculate tje umber of ml of hcl reagent (36.0%, specific gravity - 1.18) that are needed to preapre one liter of .1 m hcl solution
The amount of HCl reagent (36.0%, specific gravity - 1.18) required to prepare 1 litre of 0.1M HCl solution is [tex]0.3085 ml[/tex].
To prepare 1 litre of 0.1M HCl solution, we need to calculate the amount of HCl reagent (36.0%, Specific gravity - 1.18) required.
HCl has a molecular weight of 36.46 g/mol..
Now, the equation to calculate the amount of HCl required is:
Amount of HCl = [tex]\frac{ (Molarity of solution * Volume of solution * Molecular Weight of HCl) }{(Percentage purity of HCl * Specific Gravity of HCl)}[/tex]
So, the amount of HCl reagent required to prepare 1 litre of 0.1M HCl solution is:
Amount of HCl = [tex]\frac{(0.1 * 1 *36.46) }{(36.0 x 1.18)}= 0.3085 g[/tex]
Now, 1 g of HCl reagent = 1 ml of HCl reagent
Therefore, the amount of HCl reagent (36.0%, specific gravity - 1.18) required to prepare 1 litre of 0.1M HCl solution is[tex]0.3085 ml[/tex].
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Why do quartz and glass both have very high melting points?
please can someone give an explanation
Covalent bonding is present in Quartz. Covalent bonds result in a high melting point. Covalent solids are insoluble in most solvents.
Why does quartz have such a high melting point?Quartz is very hard to melt because quartz is unsteady above 870 Celsius, and molten silica is wobbling below 1713 Celsius. In the interval between 870 and 1713 degrees, quartz tends to change to tridymite or cristobalite, not melt. It is hard to heat quartz to melt, in the region of 1650 Celsius
Melting point: The melting point of quartz is higher than 1700°C. Curie temperature for alpha and beta quartz: The Curie warmth for quartz is 573°C.
So we can conclude that Crystal quartz has a very particular melting point. Because quartz glass is a single component it doesn't form eutectics
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Chlorine (Cl) has 17 electrons. How many electrons are in the n = 1, n = 2, and n = 3 levels, respectively, of a chlorine atom?
2, 8, 7
2, 6, 9
8, 2, 7
7, 8, 2
Chlorine's electrical configuration will be 2, 8, 7, because its atomic number (Z) is 17. In the L shell, there are eight electrons (second shell).
Chlorine has an atomic mass of 35.45 and an atomic number of 17, which means that each of its atoms contains 17 protons, 17 electrons, and 18 neutrons. As a result, you are already aware that for the element chlorine, the atomic number indicates how many electrons there are. In other words, a chlorine atom contains 17 electrons. This chlorine atom has 17 protons since the atomic number is equal to the number of protons in an atom. Since there are exactly as many electrons as protons in neutral atoms, we can infer that there are 17 electrons total that need to be divided among the electron shells.
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help pls ill mark first person to answer in 20minutes brainlyest
The chemical equations illustrate the law of conservation of mass, because each chemical equation must be balanced so that the number of atoms of each element on the reactant side equals the number of atoms of each element on the product side.
What is the law of conservation of mass ?The law of conservation of mass, also known as the principle of mass conservation, states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time because the mass of the system cannot change.
When you change the coefficients, you are only changing the number of molecules in that substance. However, changing the subscripts changes the substance itself, rendering your chemical equation incorrect.
Thus, The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.
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if the initial concentration of ni(co)4(g) is 1.0 m and x is the equilibrium concentration of co(g), what is the correct equilibrium relation?
For this reaction, the appropriate equilibrium relation is x = (Kc)1/4.
How is the equilibrium concentration determined?Write the reaction's equilibrium constant expression. To find x, substitute the final concentrations and the known K value. Determine each substance's final concentration in the reaction mixture. By adding these values to the expression for the equilibrium constant to get K, you may verify your answers.
Nickel tetracarbonyl, Ni(CO)4, decomposes in an equilibrium reaction that is:
Ni(CO)4(g) ⇌ Ni(s) + 4CO(g)
which is given by the expression:
Kc = [Ni(s)] [CO]4 / [Ni(CO)4(g)]
The initial concentration of nickel tetracarbonyl gas is also given as 1.0 M.
Let x be the equilibrium concentration of CO gas, then the equilibrium expression can be written as:
Kc = (1) (x)4 / (1.0)
Simplifying the expression gives:
Kc = x4
Taking the fourth root of both sides gives the equilibrium relation:
x = (Kc)1/4
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Which of these ions is most likely to be leached from the soil?
a. magnesium ions,
b. chlorine ions,
c. calcium ions,
d. iron ions
e. potassium ions
Each of the following properties as being physical as being physical or chemical iron rusting gasoline burning solid sulfur shaltering and lye feeling slippery
Properties of Iron Rusting is Chemical;Gasoline Burning is Chemical;Solid Sulfur is Physical ;Shattering is Physical ;Lye Feeling Slippery is Physical.
Iron Rusting: Chemical - Iron rusting is a chemical reaction between iron, oxygen and water which results in the formation of hydrated iron oxide (Fe2O3).
Gasoline Burning: Chemical - Gasoline burning is a combustion reaction between gasoline and oxygen which results in the formation of carbon dioxide (CO2) and water (H2O).
Solid Sulfur: Physical - Solid sulfur is a physical property because it is a solid at room temperature and pressure.
Shattering: Physical - Shattering is a physical properties because it is a change in the physical structure of an object.
Lye Feeling Slippery: Physical - Lye feeling slippery is a physical property because it is a tactile sensation caused by the physical properties of lye.
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Complete question:Each of the following properties as being physical as being physical or chemical
iron rusting; gasoline burning ;solid sulfur ;shaltering and lye feeling slippery
What is the mole concept and why is it important in chemistry?
Answer:
Avogadro's number
Explanation:
Answer:
The mole concept is a unit used in chemistry to express amounts of a substance. It is defined as the amount of a substance that contains Avogadro's number of particles. It is important in chemistry because it allows for accurate and consistent measurement of chemical reactions.
Explanation:
how many moles of oxygen are formed when 58.6 g of kno3 decomposes according to the following reaction? the molar mass of kno3 is 101.11 g/mol.
As per balanced reaction 4 moles of potassium nitrate gives 5 moles of oxygen. So Here 0.724 moles of oxygen is formed
The balanced reaction for the decomposition of potassium nitrate is as follows
4KNO₃ -------------> 2K₂0 + 2N₂ + 5O₂
4 moles of potassium nitrate gives 5 moles of oxygen.
Molar mass of KNO₃ = 101.11 g/mol
Mass of KNO₃ decomposed = 58.6 g
Number of moles of KNO₃ = Mass of KNO₃/ molar mass of KNO₃
= 58.6 / 101.11 = 0.579 moles
Ratio of KNO₃ : O₂ = 4:5
4/5 = 0.579/x
x = 0.579 × 5/4 = 0.724 moles
So when 0.579 moles of potassium nitrate decomposes 0.724 moles of oxygen is formed.
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Draw the products formed when the following alkene is treated with O3 followed by Zn, H2O. Be sure to answer all parts.
When an alkene is treated with O3 (ozone), it undergoes an oxidative cleavage reaction, also known as ozonolysis.
The overall reaction can be represented as follows:
Alkene + O3 → Ozonide Intermediate → Carbonyl Compound 1 + Carbonyl Compound 2
When an alkene is treated with zinc (Zn) metal, it undergoes a reduction reaction known as the "reductive coupling" or "dimerization" of alkenes.
The exact mechanism of the reaction can vary depending on the structure of the alkene and the reaction conditions, but the general reaction can be represented as follows:
2 Alkene molecules + Zn → Dimerized product
For example, when ethene (C2H4) is treated with zinc, it undergoes reductive coupling to form but-2-ene (C4H8) as the dimerized product:
2 C2H4 + Zn → C4H8
When an alkene is treated with water (H2O), it can undergo either hydration or hydrolysis, depending on the reaction conditions.
Alkene + H2O → Alcohol
When an alkene is treated with beryllium (Be) metal, it can undergo a reduction reaction known as beryllium-catalyzed reduction. This reaction is also known as the Sabatier- Senderens reaction.
The general reaction can be represented as follows:
Alkene + H2 (as a source of H) + Be → Alkane
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how many kilocalories is provided by 10 grams of pure alcohol? multiple choice question. 50 kilocalories 90 kilocalories 70 kilocalories 40 kilocalories
The answer to the multiple choice question is 70 kilocalories provided by 10 grams of pure alcohol.
Alcohol is a type of macronutrient that provides energy to the body. It is considered the fourth macronutrient, besides carbohydrates, proteins, and fats. Alcohol is broken down into acetaldehyde and then into acetate, which is converted into energy in the body.
One gram of alcohol provides 7 kilocalories of energy, which is almost double the amount provided by carbohydrates and proteins. The energy derived from alcohol is not used as efficiently by the body as energy derived from other macronutrients, such as carbohydrates, proteins, and fats. This is because the energy derived from alcohol is quickly metabolized by the liver, leading to a temporary increase in energy but also making the body more prone to energy crashes.
Therefore, while alcohol does provide energy to the body, it is important to consume it in moderation to avoid negative health effects.
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which of th following are greenhouse gases? carbon dioxide methane nitrous oxide chlorofluorocarbon
Answer: chlorofluorocarbon
Explanation:
chlorofluorocarbon
Answer:
Carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are greenhouse gases. Chlorofluorocarbons (CFCs) are also considered greenhouse gases, but they are now largely banned due to their damaging effects on the ozone layer.
Explanation:
How many moles of Ana are in 42 grams of Na
Answer:
1.83 moles
Explanation:
The question is: how many moles of "Na" are in 42 g of Na, right?
1 mole of Na = 23 g
so # mole = (1 mole / 23 g) x 42g = 1.82 moles
