Listed in the Item Bank are some important labels for sections of the image below. Match each label to the corresponding area it identifies in the image.

Silicon, Arsenic and Antimony

Can exchange electrons with each other to form ionic compounds

May have no luster

Tin, Calcium and Potassium

Hydrogen, Oxygen and Chlorine

Can be electrical conductors

Comprised of atoms

Answer:

What property of the wave is addressed by the letter B?

Picture result for The letter "B" is marking which part of the wave? B Frequency Pressure Rarefaction Plentifulness

What property of the wave is addressed by the letter "B"? Abundancy.

Explanation:

1,Wavelength,

Definition: Frequency can be characterized as the distance between two progressive peaks or box of a wave. It is estimated toward the wave.

2,Compression,

pressure thing [U] (Go ahead)

the demonstration of squeezing something into a more modest space or coming down on it from various sides until it gets more modest: Structural powers caused pressure in the world's outside layer.

3,Rarefaction,

At the point when rarefaction happens, the particles in a gas become more fanned out. You might run over this word with regards to sound waves. A sound wave traveling through air is comprised of exchanging areas of higher and lower thickness. The areas of lower thickness are called rarefactions

4,Amplitude,

At the point when rarefaction happens, the particles in a gas become more fanned out. You might go over this word with regards to sound waves. A sound wave traveling through air is comprised of substituting areas of higher and lower thickness. The areas of lower thickness are called rarefactions

Sample X is best classified as a heterogeneous mixture

Homogenous mixture has the same uniform composition and appearance through out the reaction and it is difficult to separate the substrates present in it.

A heterogeneous mixture contains of visibly  different phases or substances. Here separating the mixture becomes easy.

In the given question When sample X is passed through the filter paper we see that a white residue is remaining which is Y. This itself suggests that the the mixture is heterogeneous mixture.

As we initially got the residue it suggests that the solution is a homogenous mixture as we can now differentiate two substances

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Using the ideal gas equation, the volume of the gas is  0.84 L.

We know that an antacid does react with the acid in the stomach and that one of the products of the reaction is the carbon dioxide gas as we can see from the reaction equation; CaCO₃ (s) + 2 HCl (aq) → CaCl₂ (aq) + H₂O (l) + CO₂ (g).

If 1 mole antacid molecule produces one mole of carbon dioxide;

Number of moles of antacid = 3.32 g/100 g/mol = 0.0332 moles

Volume of the gas = ?

Number of moles of the gas =  0.0332 moles

Temperature of the gas = 37.0 °C + 273 = 310 K

Pressure of the gas =  1.00 atm

Given that;

PV = nRT

P = pressure

V = volume

n = Number of moles

R = gas constant

T = temperature

V= nRT/P

V =  0.0332  * 0.082 * 310/1.00 atm

V = 0.84/1

V =  0.84 L

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Answer:

4834.20 ml or 4.8342 L

Explanation:

Gold has density of 19.30 g/ml

so according to d = m/V

V = m/d = 93,300/19.30 = 4834.19689119 = 4834.20 ml or 4.8342 L

The volume of nuggets of gold that has a mass of 93,300g is 4834.20 ml or 4.8342 L.

Volume is the space occupied by a three-dimensional object.

Density is the mass per unit volume. Density is a scalar quantity. It is denoted by d and the symbol for density is given as rho, a Greek symbol. Density is calculated as mass divided by volume.

Density is directly proportional to mass and inversely proportional to volume. Thus, with an increase in density, mass increases and volume decreases, and vice-versa

Gold has a density of 19.30 g/ml

so according to density = mass/ volume

V = m/d = 93,300 / 19.30 = 4834.19

4834.20 ml or 4.8342 L

Therefore, the volume of nuggets of gold that has a mass of 93,300g is 4834.20 ml or 4.8342 L.

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The molarity of the dilution is 0.01 M.

Parameter

When we fill the flask with the first solution and water until its full, we make a dilution.

The concentration changed when we added water, but the number of moles stay the same.

[tex]M = \frac{n}{V}[/tex]

n₁=n₂

V₁×M₁ = V₂×M₂

5.00×0,100=50×M₂

0.500=50×M₂

[tex]M_2 = \frac{0.500}{50}[/tex]

M₂ = 0,01 M

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Stirring a solute into a solution increases the net dissolving rate because stirring affects how quickly a solute dissolves in a solvent but does not affect how much solute will dissolve.

The sum of solute that will break up is influenced by temperature - more will break down at higher temperatures. Typically called the solubility of the solute.

Charts of the solvency at distinctive temperatures can be utilized to decide how much will break down, or at which temperature a given arrangement will be gotten to be saturated.

Stirring moves the dissolvable particles around, permitting them to connect with the strong pieces of undissolved solute and transporting the broken-up solute absent into the bulk of the solution.

In the nonappearance of blending, the concentration of solute will be most noteworthy near the pieces of solute, so more solute won't break down into the arrangement until the broken-up solute has been transported absent by dissemination.

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The method can be used to visualize lipids that have been separated by thin-layer chromatography by reversibly reacting with double bonds in fatty acids in iodine fumes.

Chromatography on silica-impregnated paper is a very useful and versatile analytical method. Thin-layer chromatography is considered one of the most effective and versatile techniques for separating intact complex lipids and their lipid moieties as well as neutral lipids.

Solvents play an important role in both pathways as lipids are extracted using solvent-based techniques. In some cases the solvent is incorporated directly into the cell pellet, in others, the solvent is used during cell disruption. The separation and identification of unsaturated fatty acids are commonly performed by bromination or hydroxylation processes that convert unsaturated acids to the corresponding Bromo- or hydroxy-derivatives of saturated fatty acids.

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Chemical reaction - 0.823 grams O2 could be produced from 2.45 g of ko2 and 4.48 g of CO_2

What is Chemical reaction?

Chemical reactions happen absolutely everywhere. While we sometimes associate chemical reactions with the sterile environment of test tubes and laboratories, nothing is farther from the truth. In fact, a vast number of transformations are creating a dizzying and almost incomprehensible series of new matter and energy changes in our world every second of every day. In nature, chemical reactions can be much more difficult to control and in some cases much more complex than in the laboratory, and generally occur whether you want it or not!In the woods A raging fire, the slow rusting process of iron over the years in the presence of oxygen and water, or the delicate ripening of fruit on a tree, the transformation of various chemicals, etc... (reactants ) into another group of substances (products) is a so-called chemical reaction.

Moles KO2 = 2.44g/(71.1g/mole) = 0.034 moles

Moles CO2 = 4.45g/(44g/mole) = 0.10 moles

4KO2 + 2CO2 —> 2K2CO3 + 3O2

The reaction requires twice as many moles of KO2 than moles of CO2.  That means 0.10 mole of CO2 would consume 0.20 moles of KO2.  But we only have 0.034 moles of KO2, so the limiting reagent is KO2.  

There are 3 moles of O2 produced for every 2 moles of CO2 consumed.  In this case we'll assume all of the KO2 reacts, so that should result in (3/4) * (0.034moles) = 0.025 moles of O2 .

To get the mass, 0.025 mole * (32g/mole) = 0.823 grams O2

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An amino acid with a carboxylic acid group is glutamic acid. This sends forth a bad vibe. Additionally carrying a negative charge are the phosphate groups that are added to a protein during phosphorylation.

An iron binder called nitrous acids is used to treat potentially fatal acute cyanide poisoning. To treat arsenic poisoning, silver nitrate solution is combined intravenously with hydrazine hydrate (as sodium nitrite).

Nitrous acid is an unstable, barely acidic substance. It is a nitrogen oxoacid. It is made by treating nitrite salt and mineral acid to make it acidic. Oxidant and nitrous gas are combined to create nitrous acid, which contains less oxygen than nitric acid.

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The ability of sim agar to test for hydrogen sulfide production is based on the addition of which of the following substrates - Peptones, Sodium Thiosulphate, Ferrous Sulfate.

An example of a multi-test medium is SIM (sulfide, indole, motility) media, which examines multiple aspects of the bacterium's metabolism simultaneously. In this instance, motility, indole synthesis, and hydrogen sulfide generation.

Motility, indole, and sulfur. This media is differential. It examines an organism's capacity to reduce sulfur, make indole, and move through the agar (be motile). SIM is frequently used to distinguish between Enterobacteriaceae species.

Pancreatic digest of casein, peptic digest of animal tissue, ferrous ammonium sulfate Fe(NH4)2(SO4), sodium thiosulfate Na2S2O3, agar (3.5 g/L), and distilled water are all ingredients in SIM Medium.

The colorless gas hydrogen sulfide (H2S) has a pungent smell of rotting eggs. The eyes and respiratory system may get irritated after being exposed to hydrogen sulfide.

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Copper(i) iodide added to table salt as a dietary source of iodine. 0.238mm of CuI are contained in 1.00 lb (454 g) of table salt containing 0.0100% CuI.

Mass per mole is a definition of molar mass. Molar mass is the total mass of all atoms in substance that makes up a mole. It is measured in gram-per-mole units.

In the case of single elements or individual atoms, the molar mass is just the element's mass given in atomic mass units. Atom's atomic mass and molar mass are exactly equal.

Given,

Mass of table salt is 1.00 lb = 454 g

Copper(I) Iodine (CuI) present in the table is 0.0100% by mass or

CuI present in the 1 pound of salt = 0.01% of 454 g = 0.0454 grams

Now,

Molar mass of CuI = 63.54 grams + 126.90 grams

Molar mass of CuI = 190.44 grams

∴ number of moles of CuI present in 1 pound salt = Mass / Molar mass

Moles of CuI= 0.0454 / 190.44

Moles of CuI = 2.38 × 10⁻⁴ moles

Moles of CuI = 0.238 millimoles

∴ Moles of CuI present is 0.238mm.

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The hydrogen atoms would show a signal with a chemical shift between 4.5 and 6.5 is the methyl group

A small molecule consists of one carbon atom and three hydrogen atoms. Methyl groups are attached to or extracted from proteins or nucleic acids and can change the way these molecules function in the body. Stable. Functional groups generally do not react except in the presence of very strong acids or bases.

Despite this stable structure, methyl groups can become trapped in a process known as 'methylation' where the entire functional group is transferred to another molecule. Epigenetics, gene expression, liver detoxification, and neurotransmitter synthesis all rely on this enzyme-mediated response.

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The amount of oxygen formed when 6.54 grams ammonium perchlorate reacted is 0.89 grams.

The balanced chemical equation of the reaction of ammonium perchlorate is,

2NH₄ClO₄ → N₂ + Cl₂ + 2O₂ + 4H₂O

From the reaction it is clear that,

2 moles of ammonium perchlorate = 2 moles of oxygen

Moles of ammonium perchlorate = Moles of oxygen

Moles = Formed/reacted mass/molar mass.

Molar mass of Ammonium perchlorate is 117 g/mol.

Molar of oxygen is 16 g/mol.

Mass of NH₄ClO₄ is 6.54 grams.

Putting values,

6.54/117 = formed mass of oxygen/16

Formed mass of oxygen = 0.89 grams.

So, the mass of oxygen formed is 0.89 grams.

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Answer:

Explanation:

This practical can be used to introduce the idea that the relative amounts of a fuel and oxygen (from air) are important in combustion, and that there will be an optimum ratio in which the two substances react. This leads on to the idea of chemical equations.

In the case of a class experiment, where students generate the hydrogen themselves under strict supervision, all the hydrogen generators must be collected once the test tubes have been filled and before any flames are lit, to prevent the possibility of accidental or deliberate ignition of the hydrogen in the generator. This has caused a number of accidents in the past. Alternatively the test tubes could be filled with hydrogen beforehand, or by students under supervision, from a steady cylinder supply.

The average atomic mass of iron Isotopes is 55.90 amu.

We know that because there is a phenomenon that we call isotopy, the average atomic mass of the elements is often not a whole number. The atoms of the elements tend to differ in the number of the neutrons that they posses. Thus isotopes are the atoms of the same elements that do not have the same number of neutrons.

We now have to obtain the relative atomic mass of the iron atom while taking note of the different isotopes that we gave in the atom as we can see.

We thus have;

(54 * 5.80/100) + (56 * 91.72/100) + (57 * 2.20/100) + (58 * 0.28​/100)

= 3.13 + 51.36 + 1.25 + 0.16

= 55.90 amu

The average atomic mass of the iron as we can see from the calculation that is based on the table is obtained as 55.90 amu.

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The correct formula of the compound can now be written as [tex]NiCl_{2} .9H_{2} O[/tex]

We know that when we talk about a hydrate, we are talking about a compound that has some molecules of the water of crystallization in it. Thus we have that in this case, the compound that we are considering is nickel chloride.

Given that;

Number of moles of anhydrous salt = Number of moles of hydrated salt

Number of moles of hydrated salt = 25/130 + 18x

Number of moles of anhydrous salt = 11.37 g/130 g/mol

= 0.087 moles

When we now apply the formula, we have;

25/130 + 18x = 0.087 moles

0.087 (130 + 18x) = 25

11.31 + 1.566x = 25

x = 25 - 11.31 /1.566

x = 9

We now get;

[tex]NiCl_{2} .9H_{2} O[/tex]

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Option C. Choice describes a couple of movement-reaction forces for the duration of the frenzy: The force of gravity on her body and the force of the wall on her feet.

Newton's laws of motion are 3 fundamental laws of classical mechanics that describe the connection between the motion of an object and the forces acting on it. those legal guidelines may be paraphrased as follows: A body stays at relaxation, or in movement at a steady speed in a straight line, unless acted upon through pressure.

Within the first regulation, an object will not alternate its motion unless pressure acts on it. inside the 2nd law, the force on an item is equal to its mass times its acceleration. inside the third law, when two objects interact, they practice forces on each other of identical value and opposite routes. Newton's 2nd regulation is one of the most important in all of physics. For a frame whose mass m is regular, it is able to be written inside the shape F = ma, in which F (pressure) and an (acceleration) are both vector quantities. If a body has a net force acting on it, its miles are multiplied in accordance with the equation.

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Answer:

By collecting the rainwater carefully without allowing for any contamination one can then determine by an instrument known as a pH meter the acidity of the solution.

Explanation:

According to the given statement potassium  minerals participates in antioxidant reactions.

Redox control of signaling pathways is important in defining the expression of genes and cells in response to peroxidation because natural antioxidants play a vital role in lowering ROS/RNS levels.

By neutralizing free radicals, complexing prooxidative ions, quenching molecular oxygen and phototherapy, and inactivating lipoxygenase, antioxidants prevent food from oxidizing. An antioxidant is a substance that has the power to prevent another molecule from oxidizing; in other words, an antioxidant is a limiting reagent stable enough to give an atom to a free radical in motion, neutralizing it.

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The (m/m%) concentration of ethanol is the solution is 5.55%.

The density of the solution is given to be 1.20 g/ml. The volume of the solution is 750 ml.

We know,

Density = mass/volume

Mass of solution = Density of solution x Volume of solution

Mass of solution = 1.2 x 750

Mass of solution = 900 grams.

The mass of solute, ethanol is 50 grams.

So, (m/m%) of ethanol is,

(m/m%) of ethanol = Mass of ethanol/mass of solution x 100

(m/m%) of ethanol = 50/900 x 100

(m/m%) of ethanol = 5.55%.

So, the (m/m%) of ethanol is 5.55%.

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Helium(He) will have the highest electrical conductivity.

Magnesium (Mg) is a metal, so it is electrically conductive in nature, though not as much as hydrogen and helium.

Above certain temperatures, hydrogen(H) is also electrically conductive.

Helium(He) The ease with which an electric charge or heat can pass through a material is measured as conductivity. A conductor is a material that resists the flow of an electric current or thermal energy very little. Metals are generally good conductors of electricity.

Because chlorine(Cl) is a nonmetal, it has the lowest electrical conductivity.

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The excess reactant in the preparation of pizza from the given materials is tomato sauce; option B

In a chemical reaction, the excess reactant is the reactant that is left over at the end of the reaction.

The excess reactant is present in a quantity greater than the mole ratio of the reactant to form a product.

Considering the given reaction and the mole ratio of the reaction:

Recipe for  1 pizza =  1 crust, 1 scoop of tomato sauce, 0.5 cups of shredded mozzarella cheese, and 9 slices of pepperoni.

Amount present =  2 crusts, 4 scoops of tomato sauce, 1 cup of cheese, and 9 slices of pepperoni.

Excess reactant = tomato sauce.

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Answer:

Cheese

Explanation:

Did the lab

A pedigree chart shows Inherited traits in a family; the correct option is C

A pedigree chart is a chart that shows how traits are passed on from parents to offspring.

A pedigree chart is used in the study of inheritance or genetics.

A pedigree chart can for example be used to study the inheritance pattern of traits such as sickle cell anemia. In such a pedigree chart, the genotype of the parents is used to study how the trait is being transferred and can also predict the likelihood of the offspring of the parents inheriting that trait.

A pedigree chart can also be used to backtrace how a particular trait came into a particular family.

In conclusion, a pedigree chart is a chart that shows how traits are passed on from the parents and offspring of a family.

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Answer:

The chemical formula for the ionic compound is

Na3N3

The concentration of the cu2+ in the braker will be 0.068 molar.

Concentration is known as the measure of the relative proportions of two or more quantities in a mixture of solution. Concentration determines the number of molecules are present in the solution. Concentration also determines the acidity and basicity of the solution.

       In the given condition we have 0.068 molar of copper in the solution.

Therefore,

[Cu2+] = 1 molCu(NH3)/ l x 1 mol Cu2+/ 1 moleCu(NH3)

1 molCu(NH3) gets cancelled on both the sides.

as we know, from the given condition [Cu2+] = 0.068 molar

Therefore, 0.068 = 1 mol Cu2+ / l

   Therefore, the concentration in the beaker of the copper will be 0.068molar.

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The kind of light absorbed by greenhouse gases that causes the warming of the atmosphere is infrared light.

Global warming refers to the increase in the average global temperature as a result of an increased amount of absorbed infrared light by greenhouse gases.

Greenhouse gases are gases that form a blanket layer in the atmosphere and prevent reflected low-energy infrared light from the sun from returning back to space. By absorbing this light, greenhouse gases are able to keep the earth warm.

However, as the concentration of greenhouse gases keeps increasing in the atmosphere, so is the amount of infrared light absorbed. Consequently, the atmosphere keeps getting warmer. The more the concentration of the gases increases, the more the temperature.

This is what is currently causing global warming.

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Answer:

universal in nature while applied research is limited in nature.

Explanation:

We interrogate the equilibrium,

S=2.32×10−4⋅mol⋅L−1

what is solubility?

Solubility in chemistry refers to the capacity of one material, the solute, to create a solution with another substance, the solvent. Insolubility is the solute's inability to create such a solution.

The extent of a substance's solubility in a certain solvent is commonly assessed as the concentration of the solute in a saturated solution, one in which no more solute can be dissolved.

At this stage, the two compounds are considered to be in solubility equilibrium. Some solutes and solvents may have no such limit, in which case the two substances are said to be "miscible in any amounts."

We interrogate the equilibrium

Mg(OH)2⇌Mg+2  +2HO−

And Ksp=[Mg2+][−OH]2

And now if we call the solubility of Mg(OH)2 S, then by definition, S=[Mg2+], and 2S=−OH.

And thus Ksp=S×(2S)2=4S3

And so (finally!), S=3√Ksp4

S=3√5.0×10−114=2.32×10−4⋅mol⋅L−1

so therefore the solubility was found to be 2.32×10-4.mol.L-1

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The correct answer is A. A pH of 7 say about a solution is The solution is neutral.

A pH of 7 indicates a neutral solution. The pH scale is a logarithmic scale that measures the acidity or alkalinity (basicity) of a solution. A pH value of 7 is considered neutral, which means the concentration of hydrogen ions (H+) is equal to the concentration of hydroxide ions (OH-) in the solution. In other words, the solution is neither acidic nor basic.

Acidic solutions have a higher concentration of hydrogen ions (H+), which makes them more acidic. The lower the pH value, the higher the concentration of H+ ions and the stronger the acid.

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