Does anyone know the name of this measuring tool​

The quotient of the given mathematical problem is equal to 2. Therefore, option A is correct.

In arithmetic, a quotient can be described as a quantity produced by the division of two numbers. The quotient has used throughout mathematics and is referred to as the integer part of a division or as a fraction or a ratio.

A rational number is the quotient of two integers when the denominator is non-zero.

A real number r is rational, it can be expressed as a quotient of two integers with a non-zero denominator.

Given a real number r, r is rational if and only if there exist integers a and b such that[tex]{\displaystyle r={\tfrac {a}{b}}}, {\displaystyle b\neq 0}[/tex]

Given, the division of √100/√25

We can write the [tex]\sqrt{100} =\sqrt{25\times 4} =\sqrt{25} \sqrt{4}[/tex]

Now, [tex]\displaystyle \frac{\sqrt{100}}{\sqrt{25}}= \frac {\sqrt{25}\times \sqrt{4} }{ \sqrt{25}} =\sqrt{4} =2[/tex]

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B. the volume of the gas to increase.

Thermal energy is the energy associated with the random motion of the particles in a substance, such as a gas. When thermal energy is added to a gas at constant pressure, the increased kinetic energy of the gas particles causes them to move apart, increasing the volume of the gas. This relationship is described by Gay-Lussac's Law, which states that at a constant pressure, the volume of a gas is directly proportional to its temperature.

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A useful scientific name must have two characteristics and these include the following:

In Science, a scientific name is sometimes referred to as binomial nomenclature, binominal nomenclature, or binary nomenclature and it can be defined as a formal system that is typically used for naming species of living organisms, especially by giving each a name that is composed of two (2) main parts i.e Genus and Species.

In Science, a species simply refers to a biological classification of related organisms that look alike or have the same (similar) characteristics and they are capable of mating (breeding) with one another in a cycle (different seasons).

In this context, we can reasonably infer and logically deduce that both Genus and Species are the two (2) main characteristics which all useful scientific names must have.

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Answer:

H2O

Explanation:

H2O melts at 0 Celsius while everything else melts at a lower degree temp

Since acids are substance that can be found to have a low pH, it then follows that the substance at pH 4 is an acid based on the hydrogen ion concentration.

We would have to keep at the back of our minds that when we are talking about the acidity that our minds would have to go to the hydrogen ion concentration. On the other hand, when we are talking about the base, then our minds would have to go to the hydroxide ion concentration.

We know that when the hydrogen ion concentration and the hydroxide ion concentration of the solution is just the same then we can be able to say that what we have at that point is a solution that can be said to be neutral as we have in the case of what we have here.

Then;

pOH = - log [1.0x10-10 M]

= 10

pH = 14 - pOH

pH = 14 - 10

pH = 4

The solution must be acidic.

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Taking into account the definition of pH and pOH, the OH- ion concentration in the solution is 1×10⁻⁶ M and the solution is basic.

The pH is a coefficient that indicates the degree of acidity or basicity of an aqueous solution and indicates the amount of hydrogen ions present in a solution or substance.

The pH is defined as:

pH= - log [H⁺]= - log [H₃O⁺]

Neutral pH is 7: if the number is higher, the solution is basic, and if it is lower, it is acidic.

Similarly, pOH indicates the amount of hydroxyl ions and is expressed as the logarithm of the concentration of OH⁻ ions, with the sign changed:

pOH= - log [OH⁻]

The relationship between pH and pOH  can be established as:

pOH + pH= 14

Being [H⁺]=1×10⁻⁸ M, the pH is calculated as:

pH= - log (1×10⁻⁸ M)

Solving:

pH= 8

The solution is basic because the pH is greater than 7.

Being pH= 8, pOH is calculated as:

pOH + 8= 14

pOH= 14 - 8

pOH= 6

Replacing in the definition of pOH the concentration of OH⁻ ions is obtained:

- log [OH⁻]= 6

Solving:

[OH⁻]= 10⁻⁶

[OH⁻]=1×10⁻⁶ M

In summary, the [OH⁻] is 1×10⁻⁶ M.

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Answer:

They would run 12.4274 miles.

Answer:

Explanation:

12.4274 miles.

the answer is probably rounded, so 12.43 or 12.4

If you leave your hand on a lightbulb while it is turned on, your hand will eventually get hot because heat will be transferred from the bulb to your hand by conduction.

Conduction is a heat transfer process through a solid body. In other words, it is a process whereby heat is transmitted through the movement of particles that are in contact with one another.

When a lightbulb is turned on, electrical energy is converted into light energy and this lights up the bulb. Some of the energy of light is also converted to heat and this makes the lightbulb heat up.

Thus, when you leave your hand on a lightbulb while it is on, heat will be transferred to it by direct contact, a method known as conduction.

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The absolute configuration of the highlighted compound is L. The IUPAC name of the given compound is 2,3 dibromo pentane.

Organic compounds are named based on certain rules by IUPAC. The chain name is based on the number of carbon atoms in the longest chain of the molecules.

The configuration in  which the OH groups of the second carbon comes down is called D- configuration and if it is above the plane it is called L- configuration.

The given compound is in L configuration since the OH group of the second carbon is above the plane.

The IUPAC name of the given compound is 2,3 dibromo pentane. It contains 5 carbons in the longest chain and substituent at the second and third carbon.

The Fischer projection of the given compound is shown as below .

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The absolute configuration of given compound is S configuration. Absolute configuration is the stereochemical description of both the spatial arrangement.

Absolute configuration is the stereochemical description of both the spatial arrangement of the atoms inside a chiral molecular unit (or group). Since carbon is linked to four distinct substituents in organic compounds, absolute configuration is frequently significant.

The arrow should resemble a clock face since the fourth primary concern atom is positioned at the back. It can be an R-enantiomer if it is moving clockwise and an S-enantiomer if it is moving counterclockwise. The absolute configuration of given compound is S configuration.

Therefore, the absolute configuration of given compound is S configuration.

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Hydrogen peroxide can be prepared by the reaction of barium peroxide with sulfuric acid, so, 13.26 ml of 4.75 M H₂SO₄ (aq) are needed to react completely with 16.1 g BaO₂ (s).

In the reaction, there is 1 mole of BaO₂(s) that reacts with 1 mole of H₂SO₄(aq), so the moles of BaO₂ are 0.063 moles because the mass of this is 16.1 and the molar mass is 253.34 g/mol. So here, the same mole that is 0.063 is for H₂SO₄, and the volume of H₂SO₄ is 13.26 ml, which is gotten from the moles of solute/molarity that are 0.063 moles/ 4.75 M.

Hence, hydrogen  peroxide can be prepared by the reaction of barium peroxide with sulfuric acid, so, 13.26 ml of 4.75 M H₂SO₄ (aq) are needed to react completely with 16.1 g BaO₂ (s).

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The statement "Superficial zone chondrocytes can get compacted under physiological loading: a multiscale finite element analysis" is true.

Superficial zone chondrocytes are the most exposed to mechanical loading and are therefore at risk of being compacted under physiological loading. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

This means that chondrocytes in the superficial zone of cartilage are at risk of being compacted under the physiological loading that it experiences in everyday life. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

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Answer:

the graph shows that f(x)=[1/3]×

X and Z are the same compounds while W and Y are geometric isomers.

We have to note that the term isomers has to do with the compounds that have the same molecular formula but not the same structural formula. The implication of these is that the number of atoms of each of the elements that are in the isomers is the same but the atom to atom connectivity of the atoms in the compounds would differ.

Having this in mind, we should give a good look to the structures that we have in the question that we have. We need to look closely to see if there is any kind of relationship between the molecules that have been shown.

We can already see that there are some of the complex ions that we can be able to regard as the geometric isomers of each other based on the appearance of the structures.

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The structure of 2-methylbutan-1-ol as displayed formula is CH3-CH(OH)-CH2-CH3}

The image attached below as displayed formula.

Generally, 2-Methylbutan-1-ol is an alcohol with the molecular formula C5H10O. It is a clear, colorless liquid with a sweet, fruity odor. It is also known as isoamyl alcohol or 3-methylbutanol.

It is a common constituent of many essential oils and is used as a solvent and a flavoring agent.

It is classified as secondary alcohol because the hydroxyl group is attached to a carbon atom that is bonded to two other carbon atoms.

CH3-CH(OH)-CH2-CH3}

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Answer:

X

Explanation:

The most likely compound for the curve labeled C  is  sodium chloride according to the concept of solubility.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

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The substance that changed phase would have less heat capacity than the other thus the bonds in it were broken more easily.

We have to note that the phase change has to do with the conversion of a liquid to a solid or the conversion of a liquid to a gas. A phase is essentially a  given state of matter.

In the case of the question that we have here, we are told that the two substances that are tested are liquids. It is now clear that the substance that changed phase would have a lower heat capacity.

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There are many factors that determine how a person can grow and develop, such as environmental factors, nutrition, genetics, and a good upbringing for better mental and physical development.

Many factors are required for a person's proper development, both mentally and physically, such as a child's upbringing, which helps a person make the right decisions in life, and nutrition and good genetics, which make a person physically strong.

Hence, there are many factors that determine how a person can grow and develop, such as environmental factors, nutrition, genetics, and a good upbringing for better mental and physical development.

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The compounds that react are labelled as reactants and are written on the left side of the arrow, while the substances created as a result of the reaction are labelled as products and are written on the right side of the arrow. The arrowhead indicates the reaction's direction.

A chemical equation is a mathematical representation of the chemical process, which shows how the reactants generate products. The reactants are written on the left side of an equation, while the products are written on the right side, as shown by one- or two-headed arrows. On the left-hand side of the equation, reactants are listed as beginning ingredients. Products are listed on the right-hand side of the equation as the final outcome of the reaction. The left-hand side of an equation is abbreviated LHS informally. The right-hand side is also referred to as RHS.

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In the chemistry , The reactants are the substances on the left hand side of the reactions. The products are the substances on the right hand side of the reaction.

The chemical reaction is represented by the the chemical equation . the substances on the left side of the reaction are called as the reactants. the substances on the right side of the chemical reaction are called as the product.

A  +   B        ----->   C + D

Reactants               products

The balances equation is the chemical equation where the atoms in the reactant side is equals to the atoms in the product side.

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The most accurate statement is aquatic plants provide additional O2 for the pond through photosynthesis from early morning until late afternoon.

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored in carbohydrate molecules, such as sugars and starches, which are synthesized from carbon dioxide and water hence the name photosynthesis. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere.

It supplies most of the energy necessary for life on Earth.

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In the second experiment, bacteria are grown in a culture medium depleted of Na+. the culture medium is the gel or the liquid contains the nutrients and it is used to grow the bacteria.

In the experiment, The bacteria is grown in the culture medium. we conclude that , in the presence of the substrate S, the decarboxylation results in the P1 - dependent export of the Na⁺ outside the bacteria. The Na⁺ re-enters via P2 and this transport is coupled with the H⁺ exports leading  to the formation of the proton motive force/ Na⁺ gradient.

The extracellular H⁺ reenters the cell via P3 leading to the ATP synthesis.

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The second experiment involves the growth of bacteria in a medium that lacks Na+. The liquid or gel used as the culture medium includes nutrients and is used to cultivate microorganisms.

The bacteria is cultivated in the experiment's culture medium. We come to the conclusion that the decarboxylation causes the Na+ to be exported from the bacteria in a P1-dependent manner when the substrate S is present. The proton motive force/Na+ gradient is created when the Na+ re-enters through P2 and is transported together with the H+ exports. Through P3, extracellular H+ returns to the cell and triggers the creation of ATP.

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Answer:

k

Explanation:

ionization energy is the minimum energy required to remove an electron from the outermost energy level of an atom

so the electrons in beryllium are closer to the nucleus therefore more energy is required to loose the electrons because the two electrons are strongly held by the nucleus

Answer:

When a chemical reaction starts with 5 atoms of hydrogen, and the reaction goes into completion, it must give us 5 atoms of hydrogen.

This is in compliance with the law of conservation of mass which states that "in a chemical reaction, matter is neither created nor destroyed but converted from one form to another".

In chemical reactions, bonds are broken and new compounds are formed in the process. The same number of species at the start and end of the reaction must still be the same.

Explanation:

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the given statement is true.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Beryllium would have a strong affinity to bond with sulfur because Beryllium and sulfur could both become stable by the transfer of ONE electron from Beryllium to sulfur.

Therefore, the given statement is true.

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Last year the US produced 1.84 X 1010 lbs of phosphoric acid to be used in the manufacture of fertilizer. The average cost of the acid is $318/ton. The total value of the phosphoric acid produced is $ 2925600000.

The term average cost is defined as the ratio of total cost to the number of units of a good produced. It is mathematically expressed as AC = TC/Q.

The average cost of the acid = $318/ton

18.4 × 10⁹ lbs = ( 18.4 × 10⁹ ) / 2000 tons  

Cost = [( 18.4 × 10⁹ ) / 2000 ] × 318  

Cost = $ 2925600000

Thus, The average cost of the acid is $318/ton. The total value of the phosphoric acid produced is $ 2925600000.

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When you put it into a table and separate the variables, you'll get 0.80 molecules.

Answer: KCl

That is the correct answer on pearson

Answer:
5 Pa

Explanation:

To solve this problem, we first need to convert the volume of the gas in milliliters to liters. There are 1000 milliliters in a liter, so we can multiply the volume of the gas in milliliters by 1/1000 to get its volume in liters. This gives us a volume of 0.34 liters.

The pressure of a gas is equal to the force it exerts per unit area. The unit of pressure is the pascal (Pa). In this case, the force of the gas is 180N and the area over which it is exerting this force is 36m², so the pressure of the gas is 180N/36m² = 5 Pa.

If we change the volume of the gas to 540 liters, the pressure will not change. This is because the pressure of a gas is dependent on the force it exerts and the area over which it is exerted, and not on the volume of the gas itself. The pressure of the gas will remain 5 Pa regardless of its volume.

Mole (mol): the volume measured by the number of particles in a mole (6.02214 * 1023).

The number of atoms in exactly 12 grams of pure carbon-12 is the molecular weight, or mole, and it has a value of one.

12.00 g C-12 is equal to 1 mol of C-12 atoms, or 6.022 x 1023 atoms.

The Avogadro's Number is the number of particles in a mole (6.0221421 x 1023).

6.022 ×1023 atoms

The same as one mole

6.022 ×1023 atoms

Conversion of Number of Atoms to Number of Molecules

Count the atoms in 2.45 mol of copper to determine its atomic weight.

The number of silver atoms in a silver ring is 1.1 x 1022. In the ring, how much silver is there in a mole?

2.45 mol Cu = 6.022 1023 atoms

1 mol equals 1.48 x 1024 atoms. Cu 1.1 1022 atoms 1 mol Ag = 1.8 10-2 mol with 6.022 1023 atoms.

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Answer:

the answer is 3

Explanation:

When you put it into a table and separate the variables, you'll get 0.80 molecules. (can you give me Brainliest? )

The change that has been described is shown as L.

We know that the term change of state has to do with the process by which there is an alteration in the physical state that the material is found to be in. In this case, we have a situation in which at the beginning,  the atoms are close together but are able to slide pass one another.

We know that the former state that has been described here is the solid state and the liquid state is that in which the arrow may be pointing towards in the diagram as shown.

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Missing parts;

The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance gain energy during a change of state. Before the change, the atoms are close together and cannot slide past one another. After the change, the substance can fill its container.

Which arrow represents the change of state described above?

L

M

N

O