which bonds often bind fifferent parts of a moleule into a specific three-dimensional shape, hydrogne, amino acid, oxyeng, or carbon?

The correct answer is a) Volume is directly proportional to the number of moles.

The Volume is directly proportional to the number of moles according to the Ideal Gas Equation.

Ideal Gas Equation is given as:

PV = nRT

where, P is the Pressure of the gas

V is the Volume of the gas

n is the number of moles of gas

R is the Universal Gas Constant

T is the Temperature

Since, it can be seen from the Ideal Gas Equation that the Volume is directly proportional to the number of moles, Universal Gas Constant and Temperature.

Similarly, Pressure is directly proportional to the number of moles, Universal Gas Constant and Temperature.

Also, the Pressure is inversely proportional to the volume of the gas.

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The major organic product obtained  is

The right response is (D) (CH3)2CH2CH2CH2OH.

Alcohols react with PBr3 and become bromides.

​When bromides and magnesium combine, Grignard reagent is created.

What is a major product?

The main product of a reaction would be the one that is more stable and hence most likely to form. Propene added electrophilically to HBr would be one instance.

The right response is (D) (CH3)2CH2CH2CH2OH.

Alcohols react with PBr3 and become bromides.

​When bromides and magnesium combine, Grignard reagent is created.

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A snow is basically made up of individual ice crystals which grow during suspended in the atmosphere, usually within the cloud. The snow fall is an example of precipitation.

For the formation of snow, the temperature required at the level of air at which it form must be below or at freezing 32° F or 0°C. Snow falls with the warmer air and it ends up on the ground in the form of rain. Rain also falls in colder layers and end up in the form of sleet. We also have the freezing rain which starts off in a warmer layer and freezes when the surface layer of air is below or at freezing.

Precipitation is a type of water phase which dorm in the atmosphere and falls on the earth surface.

Thus, we concluded that the snow falls ln a cold afternoon is an example of precipitation.

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The molecule in this pizza is a "protein" because it is already mentioned and cleared from the question that it is a polymer, hydrophilic, and it's made up of oxygen, hydrogen, and sulfur atoms.

Explanation :

Amino acid is a simple term defined as an organic chemical compound that comprises of an acidic carboxyl group (COOH), a basic amino group (NH_2NH2).

It is unique chain group.

Protein : The hydrophilic, macromolecule (polymer) that is made as a result of the unison of the chain of the many amino acids is known as Protein.

Protein normally comprises of various elements such as Oxygen (O2), Hydrogen (H2), Sulphur atoms.

Hence, it is pretty much clear from the above explanation that molecule in a pizza that is a polymer, has O2, H2 and Sulphur atoms and that is also hydrophilic is a molecule of "Protein".

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Suppose you discover a chemical which will block leak potassium channels. Potassium  would subsided permeable as a result of this blockage

What is the function of the potassium channel?

Potassium (K+) channels locate in cell membranes and control transportation of K+ ions efflux from and influx into cells. They play crucial roles in both excitable and non-excitable cells and may be found in virtually all species, apart from some parasites

What are the kinds of potassium channels?

There are four main sorts of potassium channels which are as followed: calcium activated, inwardly rectifying, tandem pore domain, and voltage-gated. The differences between these types are mainly with how the gate receives its signal, whereas the structure of those channels is similar.

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Diamond has the highest melting point, which is close to five thousand.

covalent network solid

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The famous miller–urey experiment was conducted in 1953. this experiment tested the hypothesis that primitive earth conditions were favorable for creating complex organic compounds from simple compounds. classify the compounds according to whether they were inputs or outputs in this experiment.

Scientists were able to demonstrate that Miller's initial tests produced well over 20 different amino acids after Miller's death in 2007 by looking at sealed vials that had been maintained from the original trials. That is significantly more than the 20 naturally occurring mutations in the genetic code as well as what Miller originally claimed.

What is the Miller-Urey experiment?

The Miller-Urey experiment, often known as the Miller experiment, was a chemical experiment that explored the chemical origin of life under conditions that were supposed to have existed on the early, primordial Earth in 1952. Alexander Oparin and J.'s theory was confirmed by the experiment at the time. According to B. S. Haldane's theory, the environment on the early Earth was favourable for chemical reactions that produced more complex organic chemicals from simpler inorganic ones. It was carried out by Stanley Miller in 1952 under the direction of Harold Urey at the University of Chicago, and the results were published the following year. This experiment is regarded as the standard investigation of abiogenesis.

Scientists were able to demonstrate that Miller's initial tests produced well over 20 different amino acids after Miller's death in 2007 by looking at sealed vials that had been maintained from the original trials. That is significantly more than the 20 naturally occurring mutations in the genetic code as well as what Miller originally claimed. Although more recent research indicates that the gas used in the Miller experiment may not have been representative of the Earth's original atmosphere, prebiotic experiments continue to yield racemic combinations of simple to complex chemicals, including cyanide, under various settings.

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French scientist Antoine Lavoisier was one of the first to use an analytical to monitor chemical reactions is an option A.  balance.

Antoine Laurent Lavoisier changed into considered the founding father of cutting-edge chemistry. Lavoisier discovered that mass is conserved in a chemical reaction. He also did experiments on combustion and helped devise a chemical nomenclature. Lavoisier, Antoine was a French chemist who proved the law of conservation of mass.

Antoine Lavoisier determined that oxygen changed into a key substance in combustion, and he gave the element its call. He evolved the contemporary machine of naming chemical substances and has been known as the “father of current chemistry” for his emphasis on careful experimentation.

Lavoisier described an element as a chemical substance that can't be decomposed with the usage of present-day analytical methods. Mendeleev noticed a detail as a substance composed of atoms of the identical atomic weight

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Separation techniques supercritical fluid and ionic liquid extraction techniques for nuclear fuel reprocessing and radioactive waste treatment are used to for minimizing the liquid waste

Supercritical fluid is the process of separating one component from another using supercritical fluids as the extracting solvent and ionic-liquid-based extraction separation method, which applies ILs as diluents and/or extractants for solvent extraction. advanced separations technology is key to closing the nuclear fuel cycle and relieving future generations from the burden of radioactive waste produced by the nuclear power industry separation technique utilizing green solvents carbon dioxide and for dissolution and extraction of uranium dioxide and fission product relevant to nuclear waste management that's why this two techniques for nuclear fuel reprocessing and radioactive waste treatment

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Answer: four…Hydrogen

Explanation:

a water molecule is joined to 4 other water molecules by hydrogen bonds. (I also had this question)

An aqueous solution of 0.783 m silver nitrate, has density of 1.11 g/ml. the mass percentage in the solution is 40.1%.

Water serves as solvent in an aqueous solution. It is mostly shown in the chemical equations by appending (aq) to relevant chemical formula.

Reactions in aqueous solutions are usually the metathesis reactions. Metathesis reactions are the another term for double-displacement; that is, when a cation displaces to form an ionic bond with the other anion. The cation bonded with latter anion will dissociate and bond with the other anion.

A common metathesis reaction in the aqueous solutions is a precipitation reaction. This reaction occurs when the two aqueous strong electrolyte solutions mix and produce an insoluble solid, also known as a precipitate. The ability of a substance to dissolve in the water is determined by whether the substance can match or exceed the strong attractive forces that water molecules generate between themselves. If the substance lacks the ability to dissolve in the water, the molecules form a precipitate.

let's take 1.00-L sample of this solution. Use given density to determine its mass

1.00L*1000mL/1L*1.47 g/1mL=1470 g

Now, this 1.00-L solution will contain

c=n V⇒ n=c*V

n=3.47moles/L*1.00L=3.47 moles

Use the molar mass of silver nitrate to help us how to determine grams of silver nitrate would contain this many moles 3.47

moles AgNO3

169.87 g*1mole AgNO3=589.4 g AgNO3

Now, solution's percent concentration by mass is defined as the mass of the solute, in your case silver nitrate, divided by the mass of the solution, and multiplied by 100

%w/w=mass of solute/mass of solution×100

Plug in your values to get

%w/w=589.4g1470g×100=40.1%

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2H+(aq)  +  2e-   --------> H₂(g)

In most cases, individual atoms initially balance the half-reactions. The half-reactions contain electrons. These are then balanced to ensure that the number of electrons acquired and lost is equal. The two half-reactions are then combined once more.

A half-reaction is the portion of a larger reaction that corresponds to either an individual oxidation or reduction. A redox reaction can only be accurately represented by two half-reactions, one oxidation and one reduction.

addition of electron is called reduction

2H+(aq)  +  2e-    ----------------> H₂(g)

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Answer:This is a Flint lighter, It's usually used to make sparks to light things like burners in chemistry.

Explanation:

In molecules fluoresce, the emitted photon has lower energy when compared to the absorbed photon.

The most extreme fluorescence is found in compounds having aromatic levels with low-energy π→π∗ transitions. A few aliphatic, alicyclic carbonyl, and positively conjugated double-bond structures also show fluorescence. Most unsubstituted aromatic hydrocarbons fluoresce in the solution again.

If a molecule soaks the light of one wavelength and emits it in another i.e., fluoresces, we reach that molecule as a fluorophore.

Some molecules are capable of being eager, via absorption of light energy, to a higher energy state, also named an excited state.

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Patterns of the moon in nature repeat themselves at a specific time of the month.

The physical world was observed, and patterns were found. The search for rules began with an attempt to comprehend these patterns. And when these rules were ultimately understood, the physical world's functioning was revealed.

In nature, patterns include anything that repeatedly occurs. A pattern might recur at a particular hour of the day, day of the week, or season. The term "fractal" refers to patterns in nature that could appear similar at a certain point in time. A full moon, for instance, happens once every 28 days.

The only natural satellite that the Earth has is the moon. It normally circles the planet every day. When the moon is in its full phase, it is facing the sun and remains between the Sun and the Earth. This makes the moon illuminate fully.

The moon is known to follow a pattern of lunar phase every 28 days.

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Those substances which do not have a fixed geometrical shape are called irregular objects an irregular object with a mass of 17g displaces 4.7 L of water and the density is 3.61gmL⁻¹

Here given data is irregular object are given and mass of this irregular object are =  17g and it displaces of water = 4.7 L

Then we have to calculate density = ?

Density is the substance's mass per unit of volume

Then Density = mass/volume

We assume that is displaces 4.7 L means this is volume

Thus, Density = mass/volume

Density = 17g / 4.7 L

Density = 3.61gmL⁻¹

An irregular object density is  3.61gmL⁻¹

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Phosphorus-32 has a half-life of 14.0 days. starting with 2.00 g of 32p

What is half life of an element?

A substance's half-life is the amount of time it takes for half of it to decompose. When referring to radioactive elements, where the number of atoms gradually decreases over time, the term "half-life" was originally employed. Today, it is employed in numerous more circumstances where something falls rapidly.

50% of the initial mass remains after the first half life.

25% of the initial mass remains after the second half life.

12.5% of the initial mass remains after the third half-life.

6.25 percent of the initial mass is still present after the fourth half-life.

3.125% of the initial mass remains after the fifth half-life.

1.5625% of the initial mass is still present after the sixth half-life.

7th half life: 0.78125 percent of starting mass remains

8th half life: 0.390625% of starting mass is still present.

Here, we must first determine the number of half lives for phosphorus-32. Number of half lives=Totaltime/Timeforonehalflife is the formula.

One half life takes 14 days out of the whole time of 112 days. Therefore, the number of half lives is equal to 112/14, which equals 8.

The mass of P-32 that remains after 8 half lives must now be calculated.

As of the fifth half-life, 0.390625 percent of the starting mass was still present.

⇒ P-32 left mass is equal to 0.390625 of 2.00 g, or 0.0078125 g.

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Colony forming units/ml (CFU/ml) of the original sample are 2.1 * 10^8 CFU/mL according to the total plate count test.

The number of colonies created per given mL of the final diluted sample of the cultivated bacteria is measured by the colony forming units/ml (CFU/ml) of a given sample of cultured bacteria.

CFU = number of colony-forming units on the countable plate*1/FDF

where

FDF = final dilution factor

The sum of all dilution factors from the initial sample to the countable plate results in the final dilution factor.

As per the given data:

FDF = 1*10^-6

Number of the colony-forming units on the countable plate = 210

The colony forming units/ml (CFU/ml) of the original sample = 210*1/1*10^-6

The colony forming unit/ml(CFU/ml) of the original sample is 2.1*10^8 CFU/ml

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The answer should be d) A and B are compounds and C is an element

Pure chemical elements and compounds can be found in nature. An element is a substance made of the same type of atoms as a compound, whereas a compound is made of various elements mixed together in a specific ratio.

The elements iron, copper, hydrogen, and oxygen are a few examples.

Color, density, hardness, and melting and boiling points are examples of physical qualities. The capacity of a substance to go through a particular chemical transition is described by its chemical property. We search for a chemical change to locate a chemical attribute. Mixture

The simplest substance that cannot be broken down chemically is an element. A compound is created by chemically combining two or more components. A mixture is created by physically combining two or more substances.

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The simplification the expression log₄ (6ab) is log₄ 6 + log₄ a + log₄ b.

To generate a given number, a base must be raised to a particular exponent, power, or logarithm. If aˣ = n, then x is the logarithm of n to the base a, which is expressed mathematically as x = logₐ n.

Some properties of logarithm are:

Product rule: logₐ (mn) = logₐ m + logₐ n

Quotient rule: logₐ (m/n) = logₐ m – logₐ n

Power rule: logₐ mⁿ = n logₐ m

Consider the logarithm expression,

log₄ (6ab).

Using the properties of logarithms,

logₐ (mn) = logₐ m + logₐ n

Therefore,

log₄ (6ab) = log₄ ( 6 × a × b )

log₄ (6ab) = log₄ 6 + log₄ a + log₄ b

The correct option is (b).

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(IR) spectroscopy analyses a sample using infrared radiation. nuclear magnetic resonance (NMR) spectroscopy makes use of the spin states of protons and, to a lesser degree, other nuclei.

what is spectroscopy-infrared (ir) spectroscopy and nuclear magnetic resonance (nmr) spectroscopy?

As the name suggests, infrared (IR) spectroscopy analyses a sample using infrared radiation, which is a range of frequencies below the visible spectrum. However, IR spectroscopy works with wavenumbers as opposed to describing the light in terms of frequencies (the reciprocal of wavelength).

In order to identify a molecule, nuclear magnetic resonance (NMR) spectroscopy makes use of the spin states of protons and, to a lesser degree, other nuclei. The two spin quantum states that we identified as +1/2 and -1/2 for electrons are possible.

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The elements in group IA are called alkali metals. The elements in group IIA are called alkaline earth metals. The elements in group VIIA are called the halogens and the elements in group VIIA are called the noble gases or inert gases.

Because, like all other group 1A elements, it has eight valence electrons. Like all other Group 1A elements, it has only one valence electron. The reason why hydrogen can be classified in both Group 1 and Group 17 is that hydrogen can easily form cations, making some of its properties similar to alkali metals.

Although it can be placed in Group 1 of the periodic table, its properties differ from those of halogens because hydrogen is a non-metal and forms H2, which is the true property of halogens, being placed above the group of the periodic table. is also similar. The ns1 electrons are arranged like alkali metals. However, it differs significantly from alkali metals in that it is less likely to form cations H+ than other alkali metals.

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The lower value of the calculated amount of water is the theoretical yield and the reactant that is used to calculate the theoretical yield is the limiting reactant. By looking at the calculations, we can say that the theoretical yield of the reaction is ≈1.9 g while the limiting reactant is NaOH.

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The volume of the wood is 4.167 mL.

All three-dimensional objects have a certain amount of volume. It's the area that a particular object takes up.

Mass is the total amount of matter of an object or a particle. This term is also used to measure inertia, which is the body's resistance to acceleration when a net force is applied. A body's mass has an impact on how strongly it attracts other bodies through gravity.

The density of the wooden block is 30 g/mL.

The mass of the wooden block is 125 g.

So, m = 125 g

ρ = 30 g/mL

The density of an object is given as the mass of the object per unit volume.

Therefore,

density = mass / volume

ρ = m / V

V = m / ρ

V = 125 g / 30 g/mL

V = 4.167 mL

Hence, the volume of the block of wood is 4.167 mL.

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The molecular formula for both cis-2-butene and trans-2-butene is C₄H₈. compounds that have the same molecular formula but have different structures are called isomers.

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In the correct significant figures, the solutions to the given problems are;

The term significant figures refers to the number of important single digits in the coefficient of an expression in scientific notation.

61.2 m + 9.35 m + 8.6 m = 79.15 m

9.44 m – 2.11 m = 7.33  m

1.36 m + 10.17 m = 11.53 m

34.61 m – 17.3 m = 17.31 m

Thus, in the correct significant figures, the solutions to the given problems are;

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Answer:

Mass of medicinal agent taken = 1.2 gthe volume is 60 mL Specific gravity = 1.20 So the mass of solution = specific gravity X volume = 1.20 * 60 = 72gNow if we have increased the volume by 0.2 so the new volume = 60.2 New mass = 72 + 1.2 = 73.2  Specific gravity = mass /  volume = 73.2 / 60.2 = 1.22 g/mL.

The helicopter's velocity is 12.8 m/s

We can determine how quickly or slowly an object is traveling by using the phrases velocity and speed. We frequently encounter circumstances when we must determine which of two or more things is traveling quicker. If the two are traveling in the same direction on the same road, it is simple to determine which is quicker. It is challenging to identify who is moving the fastest when their motion is in the opposite direction. The idea of velocity is useful in these circumstances. Learn more about velocity in this article, including its definition, how it is measured, examples, and the distinction it makes from speed.

distance =352 meters

Time = 27.5 seconds

velocity =?

v= d/t

where;

V= velocity

D= distance

T=time

applying formula:-

v=352 /27.5

 =12.8 m/s

The helicopter's velocity is 12.8 m/s

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Answer:

pharynx

Explanation:

The pharynx, usually called the throat, is part of the respiratory system and digestive system. It carries air, food and fluid down from the nose and mouth. The pharynx is the site of common illnesses, including sore throat and tonsillitis.

Explanation:

Pharynx (Throat) The pharynx, usually called the throat, is part of the respiratory system and digestive system. It carries air, food and fluid down from the nose and mouth. The pharynx is the site of common illnesses, including sore throat and tonsillitis.

(A) By far the most common isotope of carbon is carbon- 12( 12C), which contains six neutrons in addition to its six protons.

Also there are more Carbon- 12 in atmosphere than Carbon-13 because  matter is amended in carbon- 12, because its lighter weight is used in stormy emigrations are amended in carbon- 13. The rate of carbon- 13 to carbon- 12 in the atmosphere and the ocean are roughly the same.

(B) Boron- 11 is more abundant. Boron is linked as titles containing five protons in the nexus. This means that boron- 10 would have five neutrons in the nexus and boron- 11 would have six protons.

(C) Given that isotope of Bromine with the at. mass, 79u has 49.7 composition. And also the isotope of Bromine with the at. mass, 81u hasv50.3 composition.

Since, donation of Bromine- 79 towards the at. mass is

Mass = ( 79 *49.7)/ 100 = 39.263

donation of Bromine- 81 towards the at. mass is

Mass = ( 81 *50.3)/ 100 = 40.743

Average at. mass = 39.2640.74 = 80.0068 amu

(D) The average atomic mass of an element is the sum of the millions of its isotopes, each multiplied by its natural cornucopia( the numeric associated with percent of tittles of that element that are of a given isotope).

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