The pressure gauge on a compressed air tank reads 43.2 mmHg. What is the pressure in atm? atm

80 points

The four ionic compounds formed are FeSO₄ (Iron (II) sulfate), MnSO₄ (Manganese (IV) sulfate), PbSO₄ (Lead (IV) sulfate), Pb(MnO₄)₂ (Lead (IV) permanganate).

FeSO₄, also known as iron (II) sulfate, is an ionic compound that is formed from the combination of the iron (II) cation (Fe²⁺) and the sulfate anion (SO₄²⁻). This compound is often used as a source of iron in fertilizers and as a coagulant in water treatment. SO₄²- + Fe²+ = FeSO₄ (Iron (II) sulfate)

MnSO₄, also known as manganese (IV) sulfate, is an ionic compound that is formed from the combination of the manganese (IV) cation (MnO₄⁻) and the sulfate anion (SO4²⁻). This compound is often used in the production of fertilizers, ceramics and other industrial applications. SO₄²⁻ + MnO₄⁻ = MnSO₄ (Manganese (IV) sulfate)

PbSO₄, also known as lead (IV) sulfate, is an ionic compound that is formed from the combination of the lead (IV) cation (Pb⁴⁺) and the sulfate anion (SO₄²⁻). This compound is often used in the production of paint and ceramic glazes. Pb⁴⁺ + SO₄²⁻ = PbSO₄ (Lead (IV) sulfate)

Pb(MnO₄)₂, also known as lead (IV) permanganate, is an ionic compound that is formed from the combination of the lead (IV) cation (Pb⁴⁺) and the permanganate anion (MnO₄⁻). This compound is used as an oxidizing agent in laboratory and industrial settings. Pb⁴⁺ + MnO⁴⁻ = Pb(MnO₄)₂ (Lead (IV) permanganate)

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The density of the iron placed in the water is 7.87g/mL.

Density is the measure of the mass of matter contained by a unit volume. The density of a substance can be calculated by dividing the mass of a substance by its volume as follows:

Density = mass ÷ volume

According to this question, one adds 9.6 g of iron to 23.60 mL of water and observe that the volume of iron and water together is 24.82 mL.

Volume of iron = 24.82mL - 23.60mL = 1.22mL

Density of iron = 9.6g ÷ 1.22mL

Density of iron = 7.87g/mL

Therefore, 7.87g/mL is the density of the iron.

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The 0.594 moles of the air were collected from plane flying at the altitude of the height 30,000 feet and is at the temperature of - 35 °C.

The total moles of the air in the container = 45.0 L × (1.00 mol/22.4 L)

                                                                      = 2.01 mol.

The sample contains the  75.56% nitrogen, 23.15% oxygen, and 1.29% argon, the moles of each are:

Moles of Nitrogen = 0.7556 × 2.01 mol

                               = 1.52 mol

Moles of Oxygen = 0.2315 × 2.01 mol

                             = 0.46 mol

Moles of Argon = 0.0129 × 2.01 mol

                         = 0.03 mol

The difference between the total number moles and the number moles of the nitrogen, the oxygen, and the argon:

Air = 2.01 mol - 1.52 mol - 0.46 mol - 0.03 mol

     = 0.594 mol

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Taking into account the reaction stoichiometry, 1.83 moles of Fe₂O₃ will react with 99.0 g of Al

In first place, the balanced reaction is:

2 Al + Fe₂O₃ → Al₂O₃ + 2 Fe

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

It is possible to use a simple rule of three as follows: If by reaction stoichiometry 54 grams of Al react with 1 mole of Fe₂O₃, 99 grams of Al react with how many moles of Fe₂O₃?

moles of Fe₂O₃= (99 grams of Al ×1 mole of Fe₂O₃)÷54 grams of Al

moles of Fe₂O₃= 1.83 moles

Finally, 1.83 moles of Fe₂O₃ is needed.

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The mass of zinc is made from the single replacement reaction of calcium and zinc carbonate in order to produce calcium carbonate and zinc is 198 g.

The mass of zinc is made from the single replacement reaction of calcium and zinc carbonate in order to produce calcium carbonate and zinc is calculated from the equation of reaction given as follows:

Ca (s) + ZnCO₃ (s) ----> CaCO₃ (s)  + Zn (s)

The molar mass of Calciym = 40 g/mol

The molar mass of Calcium carbonate = 100 g/mol

The molar mass of Zinc = 65 g/mol

The molar mass of Zinc carbonate = 125 g/mol

Moles of calcium carbonate produced = 304/100

Moles of calcium carbonate produced = 3.04

Mass of Zinc produced = 3.04 * 65

Mass of Zinc produced = 198 g

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The percent by mass of barium in BaCl₂ is 34.09%.

The percentage by mass of an element in a compound can be calculated by dividing the mass of the element in 1 mole of the compound by the compound's molar mass and multiply the result by 100.

Percentage by mass = mass of element/mass of compound × 100

According to this question, a compound with the chemical formula BaCl₂ can be calculated as follows:

Molar mass of barium chloride = 208.23 g/mol

Percent by mass of Cl = 71/208.23 × 100

Percent by mass of chlorine = 34.09%

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Option C: carboxylic group is the functional group in the penicillin antibiotic that saves countless lives in World War II.

The study of penicillin's bacteria-killing properties, discovered by Alexander Fleming in 1928, continued. Penicillin, when isolated as a liquid, could be injected into the human bloodstream, where it would attack harmful bacteria while leaving healthy human cells alone. The fused beta-lactam structure, a free carboxyl acid group, and one or more substituted amino acid side chains are the three fundamental structural requirements for penicillin. By 1941, the more potent drug was available in injectable form to soldiers. Thus, option C is the relevant answer.

Gerhard Domagk, a German scientist, announced the development of Prontosil, the first sulfonamide drug, in 1932. Sulfonamides are chemicals that have antibacterial properties. Soldiers could carry these antibiotics, known as "sulfa drugs," in powdered and tablet form, in their medical kits, where they could treat bacterial infections such as streptococcal pneumonia, meningitis, and sepsis.

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A glycosidic bond is necessarily characterized by a non-covalent linkage

A glycosidic bond or glycosidic linkage is a type of covalent bond that joins a carbohydrate (sugar) molecule to another group, which may or may not be another carbohydrate. Glycosidic bond is formed normally between carbon atoms, 1 and 4, of neighbouring monosaccharide units.

Peptide bond

The carboxyl group of one amino acid is joined to the amino group of another to produce a peptide bond, also known as a eupeptide bond. In essence, a peptide link is an amide-type covalent chemical bond. This bond connects two adjacent alpha-amino acids starting at carbon number one (C1) of one and nitrogen number two (N2) of another. This linkage can be discovered along a protein or peptide chain.

Ionic bond

Ionic compounds are substances held together by ionic bonds, which are the attraction between positive and negative ions in a crystal. When two atoms share one or more electron pairs, a covalent bond is created.

Glucosylated bond

The term "glycosidic bond" refers to the link created between the first carbon atom of one monosaccharide and the four carbon atoms of the adjoining monosaccharide unit, which results in the development of a polysaccharide.

As a byproduct, a water molecule is liberated.

Phosphate-diester bond

A phosphodiester is a phosphate-hydroxyl linkage between two nucleotides where the phosphate is joined to the hydroxyl group at the pentose sugar's 5' carbon and is then linked to the hydroxyl group at the pentose sugar's 3' carbon of the following nucleotide.

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B: "Enabling communication between network clients and network services and D: "integration of network functionality with the host operating system" are the functions of the Application Layer in the OSI Model.

The Application Layer is the seventh and highest layer of the OSI (Open Systems Interconnection) Model. It is responsible for providing the interface between the application software and the network. The application layer provides the services that support the use of the network by the application programs. It is the layer at which the user interacts with the network and is the point at which the network becomes application-specific.

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The IUPAC name is isobutyl propanate .Isobutyl propionate is widely used in food and beverage industries as a rum flavor.

Obtain the 1H NMR spectrum below?

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Answer:

N = M / mW = 4850 / (3.05 * 10-22) = 1.59 * 1025 atoms of tungsten.

To find the number of tungsten atoms in 37.9 milligrams of tungsten, we first need to convert the mass from milligrams to grams. 1 milligram is equal to 10^-3 grams.

37.9 milligrams = 37.9 x 10^-3 grams = 0.03709 grams

Now we have the mass of tungsten in grams. Next, we need to find the number of atoms by dividing the mass of tungsten by the mass of a single tungsten atom.

0.03709 grams / (3.05 x 10^-22 grams/atom) = 12.16 x 10^21 atoms

Therefore, there would be 12.16 x 10^21 atoms of tungsten in 37.9 milligrams of tungsten.

Note: This is a very large number, it is more commonly expressed in scientific notation.

c) At constant temperature and pressure, in a cellular environment, a biochemical reaction is at equilibrium when the absolute temperature is equal to -RT log Keq.

A biochemical reaction at equilibrium is a state in which the rate of the forward reaction is equal to the rate of the reverse reaction. At this point, the concentrations of the reactants and products remain constant.

The equilibrium constant, Keq, is a measure of the relative concentrations of reactants and products at equilibrium. It is given by the equation:

Keq = [products]^c / [reactants]^a

The negative natural logarithm of the equilibrium constant, -ln(Keq) is known as the Gibbs free energy change, ΔG.

At constant temperature and pressure, the Gibbs free energy change is related to the enthalpy change, ΔH, and entropy change, ΔS, by the following equation: ΔG = ΔH - TΔS

The above equation can be further simplified by using the ideal gas law and the universal gas constant R.

ΔG = -RT ln(Keq)

So, at constant temperature and pressure, in a cellular environment, a biochemical reaction is at equilibrium when the absolute temperature is equal to -RT log Keq.

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If the reaction occurs in the single elementary step that is the three-body molecular collision, then the equation for the elementary step is :

2NO + O₂ -----> 2NO₂

The rate law of the reaction is given as :

Rate law = k [NO]² [O₂]

The rate law shows that how the rate of the chemical reaction depends on the concentration reactant. The Rate laws shows the mathematical description that  how the changes in the amount of the substance affect the rate of the chemical reaction.

Therefore, The equation for the elementary step is given as below :

2NO + O₂ -----> 2NO₂

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[tex]\huge\underline{\red{A}\green{n}\blue{s}\purple{w}\pink{e}\orange{r} →}[/tex]

Exponential

Explanation:

Growth that increases at a constant percentage per unit time is known as Exponential growth.

Due to the fact that hydrogen only has one electron in its outermost shell, it can only create one covalent connection with an atoms. Although hydrogen configuration of hydrogen is 1s1, and the 1s orbital's

The fundamental building components of matter are atoms. They have an electron-surrounded nucleus made up of protons and neutrons. The element to which an atom belongs is determined by the quantity of protons in the nucleus. For instance, all hydrogen atoms contain a single proton but all carbon atoms have six protons in their nucleus. Atoms may combine to create molecules, which are the building blocks of everything around us. Atoms may also join together to create compounds, which differ from the sum of their component atoms in terms of their chemical and physical characteristics. Atomic science or atomic physics is the study of atoms and how they behave.

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The acidity of HCN is very low. As a result, the conjugate base formed by it is the strongest.

In the framework of the Bronsted–Lowry acid–base theory, a conjugate acid is a chemical compound that is produced when an acid transfers a proton (H⁺) to a base. To put it another way, a conjugate acid is a base that has an additional hydrogen ion attached to it, whereas, in the opposite reaction, a base would lose a hydrogen ion.

On the other hand, a conjugate base is the byproduct of a chemical reaction that occurs after an acid has given up a proton in order to complete the reaction. Therefore, a conjugate base is a species that is created when a proton is removed from an acid. This is because the conjugate base is capable of gaining a hydrogen ion in the reverse process. Because some acids are able to release numerous protons, the conjugate base of acid may itself be acidic. This is due to the fact that some acids have this ability.

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Answer: 313,632 seconds

Explanation:

Plant cells contain two elements: a cell wall and a cell membrane. In plants, the cell wall covers the cell membrane. This gives the plant cell its distinct rectangular shape.

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Answer:

E. More people from African American ethnic group is affected by AIDS than other groups.

Explanation:

because it is supported by the data provided in the circle graph. The graph shows that 48% of new AIDS cases in 2000 were in the African American population, while only 31% were in the white population and 20% were in the Hispanic population. This indicates that a disproportionate number of African Americans were affected by the AIDS epidemic in 2000. While option D "Many people are still misinformed about the severity of AIDS" is a possible conclusion, but it is not directly stated or implied by the data provided in the graph.

The equation for this reaction is

MnO4-(aq)+5Fe2+ (aq) +8H+ → Mn2+(aq)+5Fe3+(aq)+4H20

Concentration of Fe2+ in sample is 98 * 10 - 3 mole/L.

Concentration of Fe3+ in sample is 36.4×10-3 mole/L

Volume of sample = 50.0 mL

Volume of KMnO4 = 35.0 mL

Molarity of KMnO4 = 0.0280M

2MnO4-(aq) +8H+(aq) + 5Fe * 2 + (aq) Mn2+ (aq) + 5Fe * 3 + (aq) +4H20

2Fe3+(aq)+Zn(s) → 2Fe2+(aq)+Zn2+(aq)

The resulting solution titrated witH:

Volume of KMnO4 = 48.0 mL

Molarity of KMnO4 = 0.0280 M

The given reaction is:

2Mn) 4 - (aq) + 8H +(aq) + 5Fe * 2 + (aq) Mn2+ (aq) + 5Fe * 3 + (aq) +4H20

Divide the above redox reaction into two half reactions that is oxidation half reaction and reduction

Oxidation Half reaction:

Fe2+(aq) → Fe3+(aq)

Reduction half reaction:

MnO4-(aq) → Mn2+(aq) -

Assign oxidation states to each element in the above reactions.

Oxidation Half reaction:

Fe2+(aq) → Fe3+(aq)

Reduction half reaction: Mn+704--2(aq) → Mn2++2(aq) Balance the elements except oxygen.

Oxidation Half reaction:

Fe2+(aq) → Fe3+(aq)

Reduction half reaction:

Mn+704--2(aq) → Mn2++2(aq)

Now, add number of electrons (required) to that side of reaction where

reduction occurs.

Oxidation Half reaction:

Fe2+(aq) → Fe3+(aq)+e-

Reduction half reaction:

Mn+704--2(aq)+5e- +8H+ → Mn2++2(aq)

Balance the hydrogen and oxygen atoms by adding water molecules.

Oxidation Half reaction:

Fe2+(aq) → Fe3+(aq)+e-

Reduction half reaction:

Mn+704--2(aq)+5e- +8H+ → Mn2++2(aq)+4H20

Multiply the oxidation half reaction with 5 to balance the number of electrons in both reactions.

Oxidation Half reaction:

5Fe2+(aq) → 5Fe3+(aq)+5e- -

Reduction half reaction: Mn+704--2(aq)+5e- Now, add both reactions.

+8H+ → Mn2++2(aq)+4H20

Mn+704--2(aq)+5e- +8H+ → Mn2++2(aq)+4H20 5Fe2+(aq) → 5Fe3+(aq)+5e-

MnO4-(aq)+5Fe2+ (aq) +8H+ → Mn2+(aq)+5Fe3+(aq)+4H20

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On the basis of the information above, the binary compounds in order of increasing bond polarity are CH4 < SiCl4 < SF4.

Binary compounds are forms of compounds that are processed from two elemental components. The elements that can form binary compounds can be metal elements and non-metallic elements. In addition, the constituent elements can also come from both.

The elements of a binary compound are:

Non-Metal Elements: C,H,O,N,S,P,F,Cl,Br,I,At,B,Be etc.

Elements Metals Similar oxidation numbers : IA : Li, Na, K, Rb, Cs, Fr and IIA : Be, Mg, Ca, Sr, Ba, Ra and Al, Zn, Ag and so on.

Metal elements with more than one oxidation number: Fe, Cu, Cr, Co, Ni, Pb, Sn, V, Mn, Hg, Pt, Au, Sc, Ti, and so on.

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The wavelength of the radiation produced by a microwave oven that operates at 2.80 GHz is  0.107 m or 107 mm.

This refers to the distance between two crests. It is measured in length units like nanometers, centimeters, or meters. Wavelength is represented by the Greek lowercase letter lambda, λ.

Solving for the wavelength of the radiation:

The wavelength of the radiation produced by a microwave oven that operates at 2.80 GHzcan be calculated using the formula

wavelength, λ = speed of light (c) / frequency (f).

c = 3 x 10⁸ m/s

f = 2.8 x 10⁹ Hz

In this case, the wavelength would be approximately:

wavelength = ( 3 x 10⁸ m/s)

                        (2.8 x 10⁹ Hz)

                     = (3/2.8) x 10⁻¹ m

                    = 1.07 x 10⁻¹ m

wavelength = 0.107 m or 107 mm.

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Beryllium as well as its salts are soluble in a variety of solutions in water, including chloride, phosphate, & sulfate. Other substances, including beryl and beryllium oxide, are either insoluble or merely marginally soluble.

The following industries employ end products1 that contain beryllium and beryllium compounds: brakes, engines, satellites, and space telescopes for aerospace vehicles systems and ignitions for automobiles rocket cover and semiconductor chip fabrication ceramic

Salts can be classified as acidic, basic, neutral, or double salts, among others. "Acidic Salt" is the name given to a salt which is created when a strong acid and a weak base react.

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Yes, according to E.F. Codd, the relational model's founder, the values in a relational database must be atomic, which means indivisible and indestructible. This means that each attribute value,

must represent a single, indivisible unit of data and cannot be subdivided. This guarantees that each attribute value may be viewed as a distinct object and edited and processed as such. Along with domain independence and normalization, the idea of atomicity is one of the basic concepts of the relational model.This means that each attribute value must represent a single, indivisible unit of data and cannot be subdivided. This guarantees that each attribute value may be viewed as a distinct object and edited and processed as such. ccording to e.f. codd, who theorized the concept of the relational model, the actual value for the combination of attribute name and type must be atomic.

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Answer:

CoS

Explanation:

Both have valenciés of 2

NaCl + BaCl2 --> NaBaCl4 ;NO3- + OH- + Al --> Al(OH)3 + NO3- ;CO32- + OH- + Al --> Al(OH)3+ CO32- ;K + Cl- --> KCl; Ag+ + Cl- --> AgCl(s).

NaCl (aq) + BaCl2(aq) --> NaBaCl4(aq) (This is a neutralization reaction between a strong acid and a strong base) ;NO3-(aq) + OH-(aq) + Al(s) --> Al(OH)3(s) + NO3-(aq) (This is a precipitation reaction between aluminum and hydroxide ions); CO32-(aq) + OH-(aq) + Al(s) --> Al(OH)3(s) + CO32-(aq) (This is a precipitation reaction between aluminum and hydroxide ions) ;K+(aq) + Cl-(aq) --> KCl(aq) (This is a combination reaction between a metal cation and a nonmetal anion) ;Ag+(aq) + Cl-(aq) --> AgCl(s) (This is a precipitation reaction between silver and chloride ions).

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The complete question is :

Only one of each of the following pairs of reactants undergoes a reaction. Complete and balance the equation for the reaction that occurs :NaCl(aq)+BaCl2(aq)==>Na2SO4(aq)+BaCl2(aq)==>NO−3(aq)+OH(aq)+Al(s)==>?CO2−3(aq)+OH−(aq)+Al(s)==>?K+(aq)+Cl−(aq)==>?Ag+(aq)+Cl−(aq)==>?

The correct answer for the question is there are gains from the trade.

Your question seems incomplete, it might be:

You are better at performing lab experiments, and your lab partner is better at writing lab reports. So, the two of you agree that you will do all the experiments, and she will write up all the reports. What term in individual principle is this?

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As resonance decreases the energy gap, 1 has the lowest homo lumo energy. By replacing electron-donating groups, homo energy level rises.

A molecule is produced when several atoms join together and bind with one another. When a bond forms between two atoms, each shares one electron. A covalent bond results in the formation of a molecule.

Sometimes you just have to make stuff yourself if you want it done well. That most definitely could be the case when employing molecules to build minuscule gadgets like drug-delivering nano-robots.

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The complete question is -

Which of the following molecules would you expect to have the smallest HOMO LUMO energy gap?

The BRET technology is the bioluminescence resonance energy transfer. It describes the energy that transfers in between the light emitting molecule and the light sensitive molecule. This statement is true.

The BRET technology describes the energy that transfers in between the light emitting molecule and the light sensitive molecule. It is the biophysical technique that is used to monitor proximity in the living cells. The fluorescence-based technologies based on the measurement of emission photons by molecules that is activated by absorption of the quantum of the electro magnetic radiation.

Thus, The BRET technology  limit its applications in the certain fields such as single-molecule detection.

This question is incomplete, the complete question is :

Bret technology is still not as sensitive as fluorescence-based technologies, which can limit its applications in certain fields such as single-molecule detection. The given as :

a) True

b) False

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The remaining percentage of the original radioactive atoms is 321100=3. 125%.

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