The density of methane gas at a pressure of 910 torrs and a temperature of 255K is equal to 0.92 g/L.
What is the ideal gas equation?The situation of quantity of gas is determined by its volume, pressure, and temperature. The ideal gas law can be demonstrated as the product of the volume and pressure is equal to the product of the gas constant and absolute temperature.
The mathematical representation for an ideal gas can be written as follows:
PV = nRT
PV = (m/M)× RT
(PM)/RT = m/V
D = PM/RT
Where n is the moles, T is the temperature, V is the volume, and R is the gas constant.
Given, the temperature of the gas, T = 255 K
The pressure of the argon gas, P = 910 torr = 1.19 atm
The molar mass of the methane gas, M = 16 g/mol
Substitute R, P, M, and T in the ideal gas equation, and we get:
The density of methane gas, D = PM/RT
D = 1.19 ×16/(0.082 × 255)
D = 0.92 g/L
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A bar of gold has a temperature of 31°C, and a bar of aluminum has a
temperature of 27°C. Which statement explains why the bar of aluminum has
a lower temperature?
Due to the faster-moving aluminum bar's component particles, its temperature is higher than a gold bar's. The metal bar's constituent particles are traveling more slowly.
What is temperature ?The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature. Thermometers are calibrated using a variety of temperature scales, which historically defined distinct reference points and thermometric substances.
Each of us has to understand what heat and temperature mean on a daily basis. The temperature of the day affects how we dress in the morning, and the majority of what we do takes energy, which ultimately comes from the Sun. Thermodynamics is a branch of physics that studies heat and temperature.
Thus, a bar gold has higher temperature than a bar aluminum.
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the reaction between c6 h12o6 and o2 is represented by the balanced equation above. in an experiment, 0.30 mol of co2 was produced from the reaction of 0.05 mol of c6 h12o6 with excess o2 . the reaction was repeated at the same temperature and in the same container, but this time 0.60 mol of co2 was produced. which of the following must be true? a the initial amount of c6 h12o6 in the container must have been 0.10 mol b exactly 0.30 mol of c6 h12o6 must have reacted because c atoms were conserved. c exactly 0.40 mol of o2 must have reacted because the temperature and container volume are the same. d more than 0.60 mol of o2 must have reacted because it was present in excess
There had to have been 0.10 mol of C₆H₁₂O₆ in the container.
The above reaction clearly indicates that when 1 mol of C₆H₁₂O₆ and 2 mol of CO₂ are combined and O₂ is given in excess, this combination alone determines the development of a product. Therefore, C₆H₁₂O₆ is a limiting reactant and O₂ is an excess reactant in this reaction.
To make 1 mol of CO₂ from 0.05 mol of C₆H₁₂O₆, it takes 6 times as much C₆H₁₂O₆.
Now, 0.60 moles of CO₂ must be produced from 0.6 divided by 6 mol of reactant, which equals to
moles of C₆H₁₂O₆ = 0.6/6 = 0.1 mol
Therefore, the initial amount of C₆H₁₂O₆ in the container must have been 0.10 mol.
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What is the relationship between the following two compounds?
A. constitutional isomers
B. stereoisomers
C. identical
CCC(C)O
CCOCC
D. not isomers; different compounds entirely
Answer:
A) Constructional isomers
specifically functional group isomers
The given compounds are constitutional isomers. This is because their parent chain is the same but the position of the alkyl group in the two compounds is different. So option A is correct.
The molecular formula of the constitutional isomers is the same as that of the other isomers, but the connectivities are different. For example, n-butane is a constitutional isomer, as are the functional groups of ethanol, dimethyl ether, etc.
The simplest way to determine whether a molecule is a constitutional isomer is to count the number of carbon atoms and the degree to which hydrogen has been unsaturated. If all of the atoms are identical and the molecules have the same hydrogen deficiency index, then the molecules are constitutional.
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What are we allowed to do with the hot water from the tap in the lab for the contest?.
The hot water from the tap can be used in labs for various purposes.
The hot water from the tap can be used for dilution purposes. It can be used in reactions that require water as a reactant.
The hot water that is present in taps can be used to make dilute solutions. As without water, some reactions won't proceed, water can be used as the reactant.
Also, hot water is excellent for acting as a mixture as their water that is warm can serve as an excellent source for mixing compounds.
Hot water can also be used in a lab for washing of equipments.
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what is the potential of the cell when it is prepared using 0.5 m zn(no3)2 solution, hydrogen gas at 1.2 bar and a ph of 5.5?
The potential of the cell when it is prepared using 0.5 m zn(no3)2 solution, hydrogen gas at 1.2 bar and a ph of 5.5 is 0.4416V
Ecell=E°cell-0.0591/nlog([Zn]*Ph2/[H⁺]²)
=0.76-0.0591/2log(0.5*1.184/3.162*10⁻⁶)²)
=0.4416V
ΔG=-nFE°
n=2,E°=0.76V
=-2*96485*.76
=-146.657 kj
The lightest substance is hydrogen. Hydrogen is a gas of diatomic molecules with the formula H 2 when conditions are normal. It burns easily and is non-toxic, tasteless, colorless, odorless, and odorless. With approximately 75% of all normal matter made up of hydrogen, it is the most prevalent chemical in the universe. Having the atomic number 1 and the letter H, hydrogen is the first chemical element. The lightest substance is hydrogen. Hydrogen has the formula H2 and exists as a gas under normal conditions. It burns easily and is non-toxic, tasteless, colorless, odorless, and odorless.
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Is melting conduction convection or radiation?.
Melting is an example of convection.
Conduction can be understood as the process, which generally enables direct transfer of heat through the matter, this happens due to the difference in temperature, between adjacent parts of the object. It happens when the temperature of the molecules present in a substance increase, that is usually resulting in vigorous vibration.
Convection implies the form of heat transfer, by the real movement of matter, that usually occurs only in fluids. Fluid represents to any substance, whose molecules move freely from one place to another, such as liquid and also gases. It happens naturally or even forcefully.
The heat transfer mechanism in which there is no medium is required is called radiation. It refers to the movement of heat in waves, as it does not need any molecules to travel through.
Convection is a method of heat transfer that involves molecules within liquids such as gases and also liquid, It is best depicted by the melting ice, where snow melts as heat moves from the air to the ice. If we leave ice on the table, it will melt after sometime. The reason for this is that the surrounding area has become cold. Thus, cold transfer refers to the exchange of heat or also thermal energy between physical systems. When there is a difference in temperature between the two bodies, the ice is transferred from the colder body to the warmer body.
Hence, ice melting is an example of convection.
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in the following diagram, identify and label two conjugate acid-base pairs. identify the acid and the base in each pair.
In the following diagram, identify and label two conjugate acid-base pairs. Identify the acid and the base in each pair.
What is the importance of acid?
Acids play significant roles within the human body. The presence of hydrochloric acid in the stomach helps digestion by breaking down large and complex food molecules. Amino acids are required for protein synthesis which helps to grow and repair body tissues
How do you identify acids and bases?
To decide whether a substance is an acid or base, count the hydrogens on each substance before and after the reaction. If the number has decreased that substance is the acid (which donates hydrogen ions) . If the number of hydrogens has increased that substance is the base (accepts hydrogen ions)
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The ease with which a liquid evaporates depends on the strength of its intermolecular forces. A liquid with stronger intermolecular forces will have a _____ vapor pressure at a given temperature and thus a _____ boiling pointlower; higher
A liquid with stronger intermolecular forces will have a lower vapor pressure at a given temperature and thus a higher boiling point.
Intermolecular forces can be described as the forces that are present between the atoms of a molecule.
When the intermolecular forces are strong, it will not be easy to break these forces between atoms such that they begin to vaporize. As there will be lesser molecules breaking the bonds and vaporizing, the vapor pressure will be lower for molecules that have strong intermolecular forces.
As it will take high energy or heat to break the bonds in a molecule that has strong intermolecular forces, hence the boiling point in these liquids will be higher.
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given the standard enthalpy changes for the following two reactions: what is the standard enthalpy change for the following reaction? standard enthalpy change
the typical values for the enthalpy of formation: H fo[A] = 433 KJ/mol. H fo[B] equals -256 KJ/mol.
What is the typical cost equation?You must multiply the rate of each by the quantity to get these costs (in units or hours).For instance, if the unit size is 20 pounds and the cost of direct supplies is $10, $10 would be multiplied by 20 to equal $200. For just the direct materials, this would be the standard price.
What does the typical free energy change, G, mean?The change in Gibbs free energy that occurs when 1 mole of a compound is created from its component parts is known as the standard Gibbs free energy of compound formation. in their standard states, which are the element's most stable configuration at 25 °C and 100 kPa. fG is its symbol.
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enter a balanced chemical equation for the fermentation of glucose (c6h12o6) by clostridium pasteurianum in which the aqueous sugar reacts with water to form aqueous acetic acid (ch3co2h) , carbonic acid (h2co3) , and hydrogen gas. express your answer as a chemical equation including phases.
The balanced chemical equation for the fermentation of glucose, we can see that methanol and carbon dioxide are formed.
Fermentation, is generally a chemical process by which molecules such as glucose are broken down anaerobically or in the absence of water. More broadly we can understand that fermentation is the foaming that occurs during the manufacture of wine and beer, a process at least 10,000 years old.
Fermentation occurs in yeast cells, and a form of fermentation takes place in bacteria and in the muscle cells of the animals. In yeast cells these are those yeast used for baking bread and also that are producing alcoholic beverages, glucose can be metabolized through cellular respiration as in other cells too.
The balanced chemical equation for the fermentation of glucose is as follows;
[tex]C_{12}H_{22}O_{11}[/tex] + [tex]H_{2}O[/tex] → [tex]4C_{2}H_{5}OH[/tex] + [tex]4CO_{2}[/tex]
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What is the electronegativity difference of of k and cl?
Answer:
[tex] \huge\fbox{2.34}[/tex]
Explanation:
Potassium (K): It is an alkali metal that lies in Group 1 of the periodic table, with an atomic number and electronegativity 19 and 0.82, respectively. There is only one electron in the outermost shell of potassium, so it prefers donating one electron to gain stability, and hence the tendency to pull or accept an electron is less in potassium.
Chlorine (Cl): It is an halogen that lies in group 17 of the periodic table, with an atomic number and electronegativity of 17 and 3.16, respectively. There is only one electron required to fulfil the outermost shell of chlorine, so it prefers accepting one electron, and hence the tendency to attract the electron is high for chlorine.
Electronegativity Difference of K and Cl = En of Cl- En of K
[tex]ED = 3.16 - 0.82[/tex]
[tex]ED = 2.34[/tex]
The electronegativity difference explains whether a compound is ionic or covalent.
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[tex]\Large\bold{SOLUTION}[/tex]
The electronegativity difference between potassium (K) and chlorine (Cl) can be calculated by subtracting the electronegativity value of K from the electronegativity value of Cl.
The electronegativity of potassium is 0.82 and the electronegativity of chlorine is 3.16 (on the Pauling scale).
[tex]\sf Difference_{(Electronegativity)} = CI_{(Electronegativity)} - K_{(Electronegativity)}[/tex]
[tex]\sf Difference_{(Electronegativity)} = 3.16 - 0.82[/tex]
[tex]\sf Difference_{(Electronegativity)} = 2.34[/tex]
Therefore, the electronegativity difference between K and Cl is 2.34.
[tex]\rule{200pt}{5pt}[/tex]
What are 4 examples of radicals?.
Typical Free Radicals Radicals such as superoxide anion, hydrogen peroxide, hypochlorite, nitric oxide, and peroxyntrite
What is the purpose of hypochlorite?Most usually, bleach, also known as sodium hypochlorite, is used as a disinfectant. It works well to kill viruses, germs, fungi, and mycobacterium. It is a broad-spectrum disinfectant.
What effects does hypochlorite have on water?Similar to chlorine, sodium hypochlorite creates hypochlorous acid when it is discharged into water. The pathogens in the water, such as bacteria, viruses, and protozoa, then react with this acid and become inactive, making them unable to multiply or constitute a threat to human health.
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cobalt-60 has a half-life of 5.26 years. how much 60co will remain from an initial sample of 6.40 grams after 10.0 years?
Amount of 60co will remain from an initial sample of 6.40 grams after 10.0 years is 0.0009765625g.
The 1/2-life of a response is the time required for the reactant awareness to decrease to at least one-half of its preliminary fee. The 1/2-life of a first-order response is a consistent this is associated with the charge constant for the reaction: t1/2 = 0.693/k. Radioactive decay reactions are first-order reactions.
Amount left after 1 half-life = (original amount)(1/2)
Amount left after 2 half-lives = (amount left after one half-life)(1/2) = (original amount)(1/2)(1/2)
Amount left after 3 half-lives = (amount left after two half-lives)(1/2) = (original amount)(1/2)(1/2)(1/2)
As you can see, the amount left after n half-lives will be the original amount times 1/2 n times, or
Amount left after n half-lives = (original amount)(1/2)^n
For 4 half-lives and 1g original amount, we therefore have:
Amount = (1g)(1/2)^4
= 1/16
= .0625g
For 10 half-lives, we have:
Amount = (1g)(1/2)^10
= 1/1024
= 0.0009765625g.
(A) .5g
(B) .25g
(C) .0625g
(D) 0.0009765625g
A 1/2-life is the time taken for something to halve its quantity. The time period is most customarily used inside the context of radioactive decay, which occurs while unstable atomic debris lose electricity. Twenty-nine factors are regarded to be able to present process this manner.
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Disclaimer:- your question is incomplete, please see below for the comlete question.
Cobalt-60 has a half-life of 5.26 years. If 1.00 g of 60Co were allowed to decay, how many grams would be left after
a. one half-life?
b. two half-lives?
c. four half-lives?
d. ten half-lives?
Identify the NMR term that corresponds to each description.
The area of a signal that corresponds to the number of nuclei at that frequency
The frequency at which a nucleus absorbs and resonates with a magnetic field
The appearance of multiple peaks for a single nucleus due to neighboring nuclei
The end of the NMR spectrum close to the reference signa
The end of the NMR spectrum far from the reference signal
The area of a signal that corresponds to the number of nuclei at that frequency = Integration
The frequency at which a nucleus absorbs and resonates with a magnetic field = Chemical shift
The appearance of multiple peaks for a single nucleus due to neighboring nuclei = Splitting
The end of the NMR spectrum close to the reference signal = Upfield
The end of the NMR spectrum far from the reference signal = Downfield
Identify the NMR term that corresponds to each description :
integrationchemical shiftsplittingupfielddownfieldThe are of signal which is corresponds to the nuclei at that frequency is known as the integration. The chemical shift is the difference between the resonance frequency and the tetramethylsilane in terms of part per million.
The splitting of the peaks causes in the presence of the proton to the magnitude of n+1 , n is the number if neighboring proton. splitting is known as the appearance of the multiple peaks. If the end of the NMR spectrum signals are far from the reference then its is down field. when the signals appear close to the reference signal then it is up field.
Thus, Identify the NMR term that corresponds to each description :
The area of a signal that corresponds to the number of nuclei at that frequency = Integration
The frequency at which a nucleus absorbs and resonates with a magnetic field = Chemical shift
The appearance of multiple peaks for a single nucleus due to neighboring nuclei = Splitting
The end of the NMR spectrum close to the reference signal = Upfield
The end of the NMR spectrum far from the reference signal = Downfield
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The value of the formation constant for [Cu(NH3)4]2+ is 5.03x1013. Write the equilibrium reaction that shows the formation of this complex ion from copper (II) ion and aqueous ammonia. Remeber to write the formula for the complex ion in brackets, [ ], and to include states of matter
The equilibrium reaction that shows the formation of this complex ion from copper (II) ion and aqueous ammonia is Cu²⁺(aq) + 4NH₃(aq) ⇄ [Cu(NH₃)₄]²⁺(aq) Konstanta Formation 5.03x10¹³
When Cu²+ ions are in the presence of ammonia molecules in aqueous solution, a tetrahydrate complex is formed.
K f = K f = [[Cu(NH3)₄]²⁺]/[Cu²⁺][NH3]⁴
Cu²⁺(aq) + NH₃(aq) ⇄ [Cu(NH₃)]²⁺(aq)
[Cu(NH₃)]²⁺ + NH₃(aq)⇄ [Cu(NH₃)₂]²⁺(aq)
[Cu(NH₃)₂]²⁺ + NH₃ (aq) ⇄ [Cu(NH₃)₃]²⁺ (aq)
[Cu(NH₃)₃]²⁺ + NH₃(aq) ⇄ [Cu(NH₃)₄]²⁺(aq)
Equilibrium reaction:
Cu²⁺(aq) + 4NH₃(aq) ⇄ [Cu(NH₃)₄]²⁺(aq)
Also, Kf is defined as:
K f = [[Cu(NH3)4]2+]/[Cu2+][NH3]4
K f = 5.03x10¹³
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What is a radical in math?.
the square root of nth root symbol, which is used in mathematics. Square-root-containing expressions are known as radical expressions. Radicand: A number or statement contained within the radical symbol.
What does the term "radical expression" mean?Square root and nth roots are represented by the symbol "radical," which. a square root is a component of a radical expression, which is an expression. Radicand: The value or expression contained on the inside of the radical symbol. An equation that uses radical expressions as radicands and contains variables is referred to as a radical equation.
Describe a radical expression with an example.Among some examples of radicals expressions are 2, 3 72, 2 x + 7, and 4 1 p. We will examine radical expressions in-depth today, including how to create and analyze them as well as how to use their characteristics to our advantage.
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In an experiment, light of a particular wavelength is incident on a metal surface, and electrons are emitted from the surface as a result. To produce electrons with higher kinetic energy per electron, the experimenter should do which of the following? 1. Increase the intensity and the wavelength of the light 2. Decrease the wavelength of the light 3. Decrease the intensity and increase the wavelength of the light 4. None of these would produce the desired result. 5. Increase the wavelength of the light
To produce electrons with higher kinetic energy per electron, the experimenter should increase the intensity and the wavelength of the light. In order to decrease the energy of each photon we need less frequency (ν) which means increased wavelength (λ) for the incoming light. The intensity has to be increased since it is directly proportional to the number of photoelectrons emitted.
What is Planck's equation?The energy of a particular photon can be calculated using Planck's equation:
E = hν
Here, E = Energy of a photon in joules (J)
h = Planck's constant (6.626×10⁻³⁴J⋅s)
ν = Frequency of light (Hz)
What is photoelectric effect?The photoelectric effect is a phenomena whereby electrons can be released from the surface of a metal when light strikes upon it. The electrons that are released from the metal are known as photoelectrons, and this process is also frequently called photoemission. The Kinetic energy (KE) of each photoelectron is given by KE = hν – Φ.
E (i.e, the total energy of the incoming photon) must be equal to the KE (i.e, the kinetic energy of the ejected electron) plus the energy required to eject the electron from the metal which is also called the work function (Φ).
E = KE + Φ
The value of Φ also changes depending on the metal. Writing the energy of the photon in terms of Planck's equation we get:
E = hν = KE + Φ
By rearranging this equation in terms of the kinetic energy of electrons, we get:
KE = hν – Φ
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What are the 4 key stages of fire?.
The four stages of fire are ignition, growth, fully developed, and decay.
Combustion is the chemical process of “burning” while fire is a reaction that is usually involving the bonding of oxygen with carbon or other fuel, with the production of heat and the presence of flame. The original substance is called the fuel, and the source of oxygen is called the oxidizer.
There are four stages of fire development: ignition, growth, fully developed, and decay.
The ignition stage is when all the four elements of the fire tetrahedron coalesce, the fuels reach their ignition temperature, and then the fire begins. During the growth stage, the fire increases fuel consumption and creates more and more heat and smoke. The fully developed stage occurs when the maximum amount of fuel and oxidizers are consumed, and the highest heat released and is produced. Then the temperature decreases and intensity is reduced during the decay stage, which happens when the available fuel has been consumed.
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which one of these is likely to be soluble in hexane (C6H14)? select all that apply. a. NH3 b. CH3OH
c. benzene d. KCL e. decane (C10H22)
f. oil
The hexane(C₆H₁₄) is an alkane which has general molecular formula C_nH_2n+2 and it is soluble in benzene and decane(C₁₀H₂₂).
Non-polar compounds are the compounds which do not show the polarity and they cannot form any ions in a solution. In a given options, formula of benzene is C₆H₁₂, oil contains hydroxyl groups in it which are polar. Methanol is also polar in nature due to the hydrogen bond. KCl is a polar compound which forms K⁺ and Cl⁻ ions. According to the principle of like dissolves like, if any substance is polar it should be soluble in polar substance. If any substance is non-polar, then it should be soluble in non-polar. Hence, the compound hexane(C₆H₁₄) is soluble in only benzene and decane(C₁₀H₂₂).
Therefore, hexane(C₆H₁₄) is soluble in benzene and decane(C₁₀H₂₂). Hence, option c and e is correct.
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a modern penny weighs 2.7150 g but contains only 0.0600 g of copper (cu). how many copper atoms are present in a modern penny?
5.83 x 10^20 Cu atoms
calculate the theoretical total number of atp molecules, per one molecule of glucose, obtained from complete oxidation in the presence of oxygen.
The theoretical total number of ATP molecules, per one molecule of glucose, obtained from complete oxidation in the presence of oxyge is 38
Determining the exact yield of ATP for aerobic respiration is difficult due to number of reasons. In addition to generating ATP by oxidative phosphorylation in prokaryotic cells, proton motive force is also used for functions such as transporting materials across membranes and also rotating flagella.
Furthermore, the number of ATP generated per reduced NADH or FADH2 is not always a whole number. For every pair of electrons transported to the electron transport chain by a molecule of NADH, between 2 and 3 ATP are generated. For each pair of electrons transferred by FADH2, between 1 and 2 ATP are generated.
In eukaryotic cells, unlike in that of prokaryotes, NADH generated in the cytoplasm during glycolysis must be transported across the mitochondrial membrane before it can transfer electrons to the electron transport chain and this requires energy. As a result, between 1 and 2 ATP are generated from these NADH as well
In eukaryotic cells, the theoretical maximum yield of ATP generated per glucose is 36 to 38, depending on how the 2 NADH generated in the cytoplasm during the process of glycolysis enter the mitochondria and whether the resulting yield is 2 or 3 ATP per NADH..
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How did Miller and Urey test this hypothesis?.
The Miller-Urey experiment provides evidence that the nucleotide base adenine can be created by combining hydrogen cyanide and ammonia in water.
What hypothesis were Miller and Urey testing?Joan Oro discovered in 1961 that mixing ammonia and hydrogen cyanide in water might produce the nucleotide base adenine. His work resulted in a significant amount of adenine, whose molecules were created from 5 molecules of HCN. Additionally, under these circumstances, a large number of ammonia atoms is produced from HCN and ammonia.The chemical compound hydrogen cyanide, often known as prussic acid, has the formula HCN. It boils just a little bit over room temperature and is a colourless, incredibly deadly, combustible liquid.Miller-Urey supported the Primordial Soup Hypothesis because it concluded that organic molecules could beProduced in the presence of certain inorganic best explain the relationship between Miller-Urey and Primordial soup.The Miller Urey experiment refer to a form of chemical experiment that simulated the conditions present on the early Earth and tested the chemical origin of life using those conditions . The experiment performed at the time supported Alexander Oparin's and J. B. S. Haldane's hypothesis that putative conditions on the primitive Earth is important for chemical reactions to produce more complex organic compounds from simpler inorganic precursors.The first was the “primordial soup” which was a conclusion that when Earth was young, the oceans were filled with simple chemicals important for life and this assemble into living cells.To learn more about the Hypothesis refer to;
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the only mineral that is required to be added to enriched grain products in the united states is multiple choice potassium. zinc. iodine. iron.
In the US, only iron is required to be added to products made from enhanced grains. Iron and B vitamins are among these replenished nutrients (folic acid, riboflavin, niacin, and thiamine).
Additional calcium may be taken. mineral must be included in enhanced grain products. When a grain product has the word "enriched," it must have specific levels of the vitamins niacin, iron, thiamine, riboflavin, and folic acid.
Products that are useful for the manufacturing of ethanol and animal feed, respectively, include increased fiber-enriched grain products or vitamins and enhanced fiber-reduced grain products or materials, boosted in fat content, protein content, or both.
The chemical element iron has the atomic number 26 and the letter Fe, which comes from the Latin word forum. It is a metal that is a member of group 8 and the first transition series of the periodic table is called iron.
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what is the electron configuration for a silver atom? express your answer in condensed form as a string without blank space between orbitals. for example, [ar]4s23d104p4 should be entered as [ar]4s^23d^104p^4.
The electronic configuration of Silver is [Kr][tex]4d^{10}5s^{1}[/tex]
The electron configuration of an element generally describes how electrons are distributed in its atomic orbitals. Electron configurations of atoms follow a standardized rules in which all electron-containing atomic subshells along with the number of electrons they hold written in superscript form and they are placed in a sequence
However, the standard notation often yields lengthy electron configurations especially for elements having a relatively large atomic number . In such cases, an abbreviated or condensed notation may be used instead of the standard notation. In the abbreviated notation, the sequence of completely filled subshells that are corresponding to the electronic configuration of a noble gas is replaced with the symbol of that noble gas in square the brackets.
Atomic number of silver is 47, and the condensed electronic configuration can be written as [Kr][tex]4d^{10}5s^{1}[/tex]
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What are the four properties of mixtures?.
Four properties of mixture are- it's constitution is present in any ratio, energy is neither produced or evolved, no fixed melting or boiling point, components can be seperated.
A mixture is composed of two or more simpler substances. These can be compounds or chemical elements. There are 2 types of mixtures- homogeneous and heterogeneous. Four properties of a mixture-
1. The constituents of mixture can be present in any ratio and has no fixed composition.
2. Energy is neither produced nor evolved to form mixture.
3. The mixture has no fixed boiling points and melting points.
4. Components of mixtures can be separated by physical methods simply.
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What is the chemical equation for lactic acid?.
An organic acid is lactic acid. Its chemical formula is CH3CH(OH)COOH.
What results from the fermentation of lactic acid?Lactic acid (lactate) and NAD+ are produced during lactic acid fermentation. To enable glycolysis to continue and produce additional ATP, NAD+ cycles back.
Most sour milk products, including kumis, laban, yoghurt, kefir, and some cottage cheeses, contain lactic acid. Lactic acid causes the casein in fermented milk to coagulate, or "curdle." Additionally, lactic acid is in charge of giving sourdough bread its distinctive taste.
One of the organic acids is lactic acid. Lactic acid has the chemical formula C3H6O3. It is a chiral molecule as it contains two optical isomers, Levo and Dextro.
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How does hydrogen get a full valence shell?.
By donating or sharing one electron with another atom or a molecule such as water.
By exchanging electrons, atoms form chemical bonds. This is determined by how many electrons make up an element's electron clouds. The valence number is equivalent to the number of accessible electrons in the outermost electron cloud. The electrons that are most suitable for forming chemical bonds are called valence electrons. These valence electrons can be shared with another atom to fill open energy levels in a covalent bond. In spite of the fact that this outermost level possesses eight potential electrons, the resulting chemical is an inert noble gas when all eight electrons are present. Atoms that don't have eight electrons in their outermost shells will join forces with other atoms to share the extra pair of electrons until they have eight.
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select the correct answer to fill in both blanks: the substrate below is and undergo an sn2 reaction when treated with a strong nucleophile.
The substrate is primary and it would undergo SN2 reaction.
What is SN2 reaction?We know that a nucleophilic substitution reaction is said to occur when a leaving group in a compound is attacked by a nucleophilic substitution. The attack of the nucleophile would cause the cause a positive charge to begin to develop on the carbon atom that is bearing the leaving group.
This nucleophilic reaction could occur in two ways;
Unimolecular mechanism SN1
Bimolecular mechanism SN2
In the bimolecular mechanism, the leaving groups attacks and begins to attach itself to the nucleophile even before the leaving group is finally off the substrate. This is common when we have a primary carbon atom or a secondary carbon atom and a strong nucleophile.
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Question 11 Which of the following correctly lists species in order of increasing bond order? Be2 < C2 < N2
Be2 < C2 < N2 is correct order of bond order.
To verify the accuracy of any chemical structure, we use the octet rule, which stipulates that all atoms in a compound are expected to abide by. In the model of carbon IV oxide, every atom precisely satisfies the octet rule. Each atom in the molecule has eight electrons surrounding its valence shell. Given the overall number of bonds and electrons, as well as the fact that CO2 contains sixteen valence electrons, we can thus conclude that this structure is correct.
It has a negative charge that is comparable to its negative charge, which is 1.602176634 coulombs, the fundamental unit of electric charge. Only 1/1,836 the mass of a proton, or 9.1093837015 10-31 kg, makes up the rest mass of an electron.
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Part A Consider the following neutral electron configurations in which n has a constant value. Which configuration would belong to the element with the most negative electron affinity, E? View Available Hintís) O 5s2 5s25p O 5s25ps O5s25p Submit Request Answer Part B Arrange the following elements from greatest to least tendency to accept an electron Rank from greatest to least tendency to accept an electron. To rank items as equivalent, overlap them. h View Available Hint(s) 9:18 PM
As stated in the preceding statement. Due to the stability of noble gases, incandescents have the highest EA.
Who or what is an electron?A opposite charges subatomic particle known as an electron can either be free or attached to an atom (not bound). One of three principal types of atoms within about an atom is an ion that is bonded to it; an other two are neutrons and neutrons.
What is an example of an electron?The smallest elemental component of an atom, the electron has a negative charge. In a neutral atom, there are an adequate amounts of protons and electrons. One atom or one proton are all that the hydrogen atom has. Contrarily, the nucleus of an atom possesses 92 protons and
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