how many signals will be expected in the 1H NMR spectrum of the following compound?

15g of CO2 will be produced from 15g of O2  as 2 moles of O2 produces 2 moles of CO2

What is moles ?
In chemistry, a mole, sometimes spelled mol, is a common scientific measurement unit for significant amounts of very small objects like atoms, molecules, or other predetermined particles.

The mole designates 6.02214076 1023 units, which is a very large number. For the International System of Units (SI), the mole is defined as this number as of May 20, 2019, according the General Conference on Weights and Measures. The number of atoms discovered through experimentation to be present in 12 grams of carbon-12 was originally used to define the mole.

C2H4O2 + 2 O2 --> 2 CO2 + 2 H2O

2 unit of O2 produces 2 unit of CO2

15g of O2 produces 15g of CO2

15g of CO2 will be produced from 15g of O2  as 2 moles of O2 produces 2 moles of CO2

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A compound is formed by the combination of two or more different atoms. The white dot and black dot in the image are two different elements which combines together to form the compound AB.

Atoms are the basic units of every substances. Atoms combines to form molecules and molecules combines to form compounds. Thus compounds are chemical substances formed by the combination of different atoms.

For instance two oxygen atoms combines to form O₂ molecule similarly H₂, N₂ etc. can be formed from their respective atoms. When atoms of two different elements combines together they form compounds such as H₂O CO₂ etc.

These compounds can be formed through a specific type of chemical bonding such as ionic bonding, covalent bonding etc. The bond type depends on the nature of bonding atoms.

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Gas chromatography-mass spectrometry (GC-MS) is an analytical method that combines both the mass spectrometer and the gas chromatograph to separate the chemical components of a sample mixture to detect the presence and then identify the compound.

Gas chromatography-mass spectrometry (GC-MS) can be described as an analytical method that combines the characteristics of gas chromatography and mass spectrometry to identify various substances within a test sample.

Applications of GC-MS include fire investigation, drug detection, environmental analysis, and identification of unknown samples, including that material samples.

The GC-MS is made of two major blocks: the gas chromatograph and the mass spectrometer. The gas chromatograph uses a capillary column whose features regarding molecule separation depend on the column's dimensions as well as the phase properties.

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Volume should you dilute 35 mL of a 12 M stock HCl solution to obtain a 0.500 M is 840 mL,

Given that :

Molarity of the solution M1 = 12 M

volume of the solution V1 = 35 mL

Molarity of the solution after the dilution M2 = 0.500 M

volume of the solution after the dilution V2 = ?

the dilution law states that :

M1 V1 = M2 V2

12 × 35 = 0.500 × V2

V2 = 840 mL

Thus, Volume should you dilute 35 mL of a 12 M stock HCl solution to obtain a 0.500 M is 840 mL.

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In the combustion of methane the are reactants are CH₄(g) and O₂(g). The products are CO₂(g) and H₂O(g) .

Combustion is process in which the substance react with the oxygen to produce heat. In the combustion of , the methane , CH₄ is burnt in the presence of oxygen, O₂ produce carbon dioxide, CO₂ and water H₂O. it is very useful as fuel source. the chemical reaction is given as follows :

CH₄(g)   +     2O₂(g)   ---->   CO₂(g)   +     2H₂O(g) . + heat + light

Thus, In the combustion of methane the are reactants are CH₄(g) and O₂(g). The products are CO₂(g) and H₂O(g).

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Answer:

Na,Ba,Ti on the same base placement on the periodic table.

Answer:

O,S,Se

Explanation:

Because they lose electrons and become an anion to become ionicly bonded and they are in the same period

The specific heat of a 95.01 g piece of an unknown metal that exhibits a 45.2°C temperature change upon absorbing 1870 J of heat is 0.44J/g°C.

The specific heat capacity of a metal can be calculated using the following:

Q = mc∆T

Where;

According to this question, a 95.01 g piece of an unknown metal exhibits a 45.2°C temperature change upon absorbing 1870 J of heat. The specific heat capacity can be calculated as follows:

1870 = 95.01 × c × 45.2

1870 = 4294.452c

c = 0.44J/g°C

Therefore, 0.44J/g°C is the specific heat capacity of the metal.

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X-rays and gamma rays have frequencies higher than microwaves but lower than UV radiation.

X-rays and gamma rays are both types of electromagnetic radiation. They are similar in that they are both invisible, travel at the speed of light, and can penetrate human tissue. They differ in their wavelength and energy. X-rays have a shorter wavelength and higher energy than gamma rays

Gamma rays are a type of electromagnetic radiation. They are the most energetic form of electromagnetic radiation. Gamma rays are produced by the most energetic events in the universe, such as supernova explosions and the merging of neutron stars.

X-rays are used in medicine and dentistry because they can penetrate the human body, which Gamma rays cannot.

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The electrons that are being lost gained or shared by each atom are Shared electrons.

Atoms and chemical species lose and gain electrons as they react to gain stability. Therefore, metals usually donate electrons to nonmetals to form cations. The number of electrons depends on their position on the periodic table. When an atom gains an electron, its overall charge becomes negative.

When an atom loses an electron its overall charge becomes positive. When an atom gains or loses electrons, its mass does not change. The number of electrons an atom can lose and gain share during a chemical reaction is called its valence. An atom that loses an electron gains a positive charge because it has fewer negatively charged electrons to balance the positive charge of the protons in the nucleus.

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The empirical formula of compound is C₃H₇O₃. The molecular formula is 1, 2, 3, tri hydroxyl propane.

What is molecular formula ?

The molecular formula is an equation that specifies how many atoms of each element there are in a single compound's molecule. It displays the precise amount of atoms present in a molecule.

Propane, for instance, has the chemical formula C4H10. The given compound has a formula of 4 carbon atoms and 10 hydrogen atoms.

The empirical  formula of compound is C₃H₇O₃.

Then, ( 12 × 3 ) + ( 1 × 7 ) + ( 16 × 3 )

= 36 + 7 + 48

= 91

( 39.6 ) + ( 7.75 ) = 47.35

91 - 47.35

= 43.65

Thus, molecular formula of given compound is 1, 2, 3, tri hydroxyl propane.

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Each Hydrogen atom has 1 valence electron. Since Hydrogen can only fit a max of 2 valence electrons in its orbital, each Hydrogen atom only needs 1 electron. Each atom has 1 valence electron, so they can just share, giving each atom two electrons each.

The most likely way in which an atom of magnesium (Mg) will satisfy the octet rule when it forms bonds is by losing two electrons.

The octet rule is described as a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.

The octet rule is held responsible for the relative inertness of the noble gases and the chemical behavior of certain other elements.

Magnesium (Mg) will satisfy the octet rule when it forms bonds is by losing two electrons.

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Answer:

by losing two electrons

Explanation:

I got it right on edge 2023

good luck

The organic nomenclature of the condensed structural compound is 1. Octane.

1. Octane

2. But - 2- ene

3. ethylene

4. Penatne

5. But - 2 - yne

6. hept 1 - yne

7. Hexx-2 - ene

8. But -1 - yne

In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a method of naming natural chemical compounds as recommended by using the global Union of natural and applied Chemistry. it is posted inside the Nomenclature of Organic Chemistry.

The name of the organic compound is written out with the substituents in alphabetical order observed via the bottom call (derived from the wide variety of carbons in the discern chain). Commas are used among numbers and dashes are used between letters and numbers. There are no spaces inside the call.

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For the grape juice, we get that the hydroxyl ion concentration is  1.4 ×10-10M.

Hence, pOH will be = -log[1.4*10⁻¹⁰] which is approximately 9.6.

Now the value of pH will be = 14-pOH = 14 - 9.6 = 4.4.

For the orange juice, we know that the H+ or hydronium ion concentration is  1.8 × 10-4 M.

Then, the value of the pH will be= -log[1.8*10⁻⁴]=3.7.

Thus from the above result, it is clear that the range juice has lower pH, hence it will be more acidic. While the grape juice will be less acidic.  

The pH can either go up or down depending on the change in hydronium concentration. If the hydronium concentration increases, the pH decreases, causing the solution to become more acidic. This happens when an acid is introduced. As H+ ions dissociate from the acid and bond with water, they form hydronium ions, thus increasing the hydronium concentration of the solution. If the hydronium concentration decreases, the pH increases, resulting in a solution that is less acidic and more basic. This is caused by the OH^- ions that dissociate from bases

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Answer:

Third choice

Explanation

Because reactivity of the elements decrease across the periodic table and it depends on the number of protons it has. Hence low number of protons more reactive.

The balanced NET ionic equation is

Al(OH)3 ----> Al3+(aq) + 3OH(aq) (s)

When AICI and NaOH are combined in an aqueous solution, the following balanced NET ionic equation describes the reaction:

Al(OH)3 -----> Al3+(aq) + 3OH(aq) (s)

An exchange reaction occurs when AICI and NaOH are combined.

Al(OH)3(s) + 3NaCl(aq) -----> AlCl3(aq) + 3NaOH(aq) (1)

In this reaction, the ions Al+3 and Na+ exchange Cl- and OH- ions.

The total ionic equation must first be written in order to create the NET ionic equation:

AI(OH)3(s) + 3Na+(aq) + 3Cl(aq) + Al3+(aq) + 3Cl(aq) + 3Na+(aq) + 3OH (aq) (2)

Since the Al(OH), precipitates, we are unable to describe it as an ion because the aqueous solution does not allow for its dissociation.

The following is the net ionic equation for reaction

Al3+(aq) plus 3OH-(aq) leads to Al(OH)3(s)

The net ionic equation excludes all repeating ions from reactants and products. We eliminated the Na+ and Cl- ions from the net ionic equation because of this

The balanced net ionic equation is as follows:

Al(OH)3 ----> Al3+(aq) + 3OH(aq) (s)

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Based on the given frequency of the wave, the wavelength of the wave is 3.75 * 10⁻⁷ m.

The frequency of a wave is the number of complete oscillations performed by the wave per second.

The wavelength is the distance between successive points on the wave.

The relationship between the wavelength and frequency of a wave is given below:

Wavelength = velocity / frequency

Assuming the given wave is an electromagnetic wave, the velocity of the wave is 3.0 * 10⁸ m/s

Wavelength = 3.0 * 10⁸ m/s / 8.50 * 10¹⁴ s⁻¹

Wavelength = 3.75 * 10⁻⁷ m

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The vapor-pressure lowering, AP, of an aqueous solution is 2.44Torr.

Mole = [tex]\frac{weight}{molecular weight}[/tex]

In a 1.80m (molal) solution, 1 kilogram of the solvent contains 1.80 moles of the solute (which is water in this case).

Water's molar mass is equal to 2(atomic mass of H) + [2(1)+16] (atomic mass of O).

=18g/mol

The mole of water in 1 kilogram (equivalent to 1000 grams)::

[tex]n_{H_{2} O}[/tex]= [tex]\frac{1000}{18g/mol}[/tex] = 55.56mol

The solute's mole fraction in the 1.80 m solution is as follows::

[tex]x_{solute}[/tex] = [tex]\frac{n_{solute} }{n_{H_{2}O }}[/tex]

   ⇒[tex]x_{solute} =[/tex] [tex]\frac{1.80}{55.56}[/tex] = 0.032

a. Sucrose is a non-electrolyte, i.e., it does not undergo dissociation in the aqueous solution.

As a result, the Van't Hoff factor for sucrose is = i = 1

The lowering in vapor pressure of the solution, which is 1.80m in sucrose:

=[tex]ix_{solute}p^{0}[/tex]

=(1)(0.032)(17.54)Torr

=(0.56)Torr

b. Aluminum chloride dissociate in water as follows:

[tex]AlCl_{3}[/tex] →[tex]Al^{3+}+ 3Cl^{-}[/tex]

As a result, an aqueous solution containing one aluminum chloride particle yields four more particles.

Thus, i=4

The lowering in vapor pressure is thus:

=[tex]ix_{solute}p^{0}[/tex]

=(4)(0.032)(17.54)Torr

=(2.24)Torr

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Explanation:

as the number of shell increased the size of the atom increase but the same shell with different number of valence electron, as electron number increase the attraction between nucleus and valance electron increased then the atom becomes shrinks and so the size of it decreased.

0.506 moles  of  aluminum are required to remove 0.253 mol of silver sulfide from a silver bowl.

3Ag2S(s) + 2Al(s) --> 6Ag(s) + Al2S3(s)

2 moles of Al required to make 1 mole  Al2S3

1 moles Al2S3= 2 moles Al

0.253 moles Al2S3 = 0.506 moles  Al

The mole idea facilitates the measurement of a material's amount. When interacting with particles at the atomic (or molecular) level, it is acknowledged that even a single gram of a pure element has a significant number of atoms. The mole theory is widely used in this context. The most often used unit of measurement is the "mole," which is a count of many particles.

The number 6.02214076*1023, also known as the Avogadro constant, is frequently denoted by the letter "NA". One of the most fundamental entities that may be represented in moles are atoms, molecules, monoatomic and polyatomic ions, as well as other particles (such as electrons).

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The most likely will happen to smoke in the atmosphere is over time, the solid particles will settle on whatever is outside (Option C).

Smoke can be defined as any group or mixture of small particles that may be present in different states of matter in the air (i.e., in the solid state, liquid state and or gas state), generally composed of burning fossil fuels or carbon.

Therefore, with this data, we can see that smoke is generally composed of carbon but it is also represented by other types of particles in suspension in the atmosphere.

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Answer:

N, P, As, Bi, Mc

Explanation:

Similar chemical properties are usually found within the same column of the periodic table.

Antimony is Sb, which is in column 15.

Therefore all the elements in column 15, including N, P, As, Bi, Mc, should have similar chemical properties

3.2 moles of NaOH will neutralize 1.6 moles of H₂SO₄

A molar ratio is a ratio between the amounts (moles) of any two compounds that participate in a chemical reaction. It is the conversion factor between compounds in a chemical reaction and is derived from the compound's coefficients of the balanced equation. Therefore, molar ratios are used to convert the amounts of compounds in a chemical reaction.

For the given reaction:

H₂SO₄ + 2NaOH = Na₂SO₄ + 2H₂O

The above reaction is a balanced reaction and indicates that two molecules of NaOH are involved with one molecule of H₂SO₄ for neutralization. So, this gives the mole fraction of 1: 2.

Now, considering the mole ratio of H₂SO₄ to NaOH, which is 1: 2. For every mole of the sulphuric acid the reaction requires twice the moles of the sodium hydroxide.

Since the given moles of H₂SO₄ = 1.6 moles

Moles of  NaOH = 2 × 1.6

= 3.2 moles

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The wavelength that is associated with the transition is  2145 nm.

We know that the wavelength can be obtained from the use of the Rydberg equation and we know that the Bohr's mode lets us know that an electron can move from from a higher to a lower energy level.

Let us write;

1/λ = RH(1/[tex]n_{2} ^2[/tex] - 1/[tex]n_{1} ^2[/tex])

λ = wavelength

RH = Rydberg constant

[tex]n_{1}[/tex] = initial level

[tex]n_{2}[/tex] = final level

Then;

1/λ = 1.097 * 10^7 (1/4^2 - 1/7^2)

1/λ = 1.097 * 10^7 ( 0.0625 - 0.020)

λ =  2145 nm

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Considering the definition of percentage by mass, 448 grams of a 12.5 % sugar solution contain 56.0 g of sugar

The percentage by mass expresses the concentration and is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.

The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage:

percent by mass= (mass of solute÷ mass of solution)×100%

In this case, you know:

Replacing in the definition of percent by mass:

12.5%= (56 g÷ mass of solution)×100%

Solving:

12.5%÷ 100%= 56 g÷ mass of solution

12.5%÷ 100%= 56 g÷ mass of solution

0.125= 56 g÷ mass of solution

0.125× mass of solution= 56 g

mass of solution= 56 g÷ 0.125

mass of solution= 448 g

Finally, the mass of solution is 448 grams.

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According to research, the ear is a complex organ that meets hearing, being of great importance to humans.

Hearing is a physiological process where sound waves, which are vibrations, enter through the outer ear and reach the middle ear, causing the eardrum to vibrate.

In this sense, the vibrations, in turn, cause the movement of small bones called stirrup, anvil and malleus, where they reach the organ of Corti, stimulating the auditory nerve and finally become nerve impulses that reach the brain.

Therefore, we can conclude that according to research, hearing is a process that implies that sound waves first impact the eardrum until finally reaching the auditory centers of our brain.

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Answer:

Make Li-Ion batteries.

Produce commercial electric vehicles.

Create underwater subsea electrification.

Power telecommunication devices.

Explanation:

Minerals are essential raw materials in our daily lives, and are vital for economic, social and technological development. For example, in the following:

Agriculture: Phosphate rock, potash and lime are used in agricultural fertilisers and other mineral products are used to improve soil. The water you drink uses minerals to make it clean.

Construction: About 60 tonnes of aggregate are used to build an average house in the UK. If we include the associated infrastructure, this can be as high as 400 tonnes.

Minerals are used in building houses, schools, libraries, hospitals, offices and shops. Buildings use a wide range of minerals:

iron (as steel) in the framework of large building,

clay in bricks and roofing tiles,

slate for roofing tiles,

limestone, clay, shale and gypsum in cement,

gypsum in plaster,

silica sand in window glass,

sand and gravel and crushed rock as aggregates for fill and in concrete,

copper for plumbing and wiring,

clays for bathroom fixtures and fittings and tiles,

paint may include pigments, extenders and fillers from mineral sources.

Answer: toothpaste

Explanation:

The bond enthalpy of F2(g) is 156.9 kJ/mole. The ΔH o f for F(g) is 78.5 kJ/ mole.

Bond enthalpy is defined as the amount of energy needed to dissolve one mole of a certain type of bond between two gaseous atoms.  In general, the amount of energy acquired or lost during a reaction is comparable to the process's change in enthalpy.

Given the bond enthalpy of F2 = 156.9 kJ/ mole

The ΔH can be calculated as

ΔH = bond enthalpy of F2 / 2

ΔH = 156.9 kJ/mole / 2

ΔH = 78.5 kJ/mole

Thus, the bond enthalpy of F2(g) is 156.9 kJ/mole. The ΔH o f for F(g) is 78.5 kJ/ mole.

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The concentration of the unknown [tex]H_3PO_4[/tex] solution would be 0.0368 M

The equation of the reaction is as follows:

[tex]H3PO_4(aq)+3NaOH(aq)--- > 3H_2O(l)+Na_3PO_4(aq)[/tex]

The mole ratio of the  [tex]H_3PO_4[/tex] solution to the NaOH solution is 1:3.

But 0.140 M, 25.24 mL of NaOH was used.

Recall that: mole = molarity x volume (in Liters)

Mole of 0.140 M, 25.24 mL of NaOH = 0.140 x 25.24/1000

                                                             = 0.0035336 mol

Following the mole ratio, the equivalent mole of [tex]H_3PO_4[/tex] would be:

0.0035336 /3 = 0.00117786666

Recall that: molarity = mol/volume (in Liters)

Molarity of 0.00117786666 mol, 32.00 mL [tex]H_3PO_4[/tex] = 0.00117786666/0.032

                                                                                  = 0.0368 M

In other words, the molarity of the [tex]H_3PO_4[/tex] solution to 3 significant figures is 0.0368 M.

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