a molecule is group of answer choices less stable than its constituent atoms separated. a combination of two or more atoms. electrically charged. none of these a carrier of one or more extra neutrons.

Explanation:

=> The simplest form of

56

:

98

56:98 is

4

:

7.

4:7.

Step-by-step explanation:

Given ratio -

56

:

98

56:98

We have to reduce it to its simplest form,

For that, we have to find the GCD of the numerator as well as the denominator:

So, the GCD for

56

56 and

98

98 is

14.

14.

Now, divide both the numerator and denominator by the GCD:

=

>

56

÷

14

98

÷

14

=>

98÷14

56÷14

=

>

4

7

=>

7

4

Hence, the simplest form is

4

:

7.

A substance won't condense into a liquid or solid if the average kinetic energy is higher than the attraction forces holding the particles together. A liquid or solid will develop if the kinetic energy is lower than the attraction forces.

The structured hydrogen bonding connections that keep the molecules in the ice crystalline structure are eventually overcome as the ice melts as the molecules' kinetic energy rises. In the resultant liquid, the water molecules are held together by random hydrogen bonding connections.

Some of the intermolecular forces that are present in a substance's solid state are overcome as it melts. To counteract larger intermolecular forces, more energy is needed. Good! In order to overcome some of the intermolecular interactions present in the solid state, a higher melting point indicates that more energy is needed.

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The balanced equation for the reaction is: C3H8 + 5O2 -> 3CO2 + 4H2O

The mass of C3H8 can be calculated:

m = n * M = 56.37 moles * (3 * 12.01 g/mol + 8 * 1.01 g/mol) = 56.37 moles * 44.09 g/mol = 2482 g or 2.48 kg.

So, 2.48 kg of C3H8 must react in order to release 1.25 x 10^6 kJ of heat.

C3H8 is a molecular formula that represents the compound known as a propane. Propane is a colourless and odourless gas. It is used as a fuel source for heating and cooking.

Propane is stored in pressurized containers and used in heating systems, portable stoves, and grills. It is also used as a fuel for vehicles and in certain industrial applications.

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The hume-rotthery rule is a set of guidelines for substitutional solid solutions to be viable and  interstitial solid solutions to be viable. The correct answer is B and C.

The basic guidelines known as the Hume-Rothery rules, which bear William Hume-name, Rothery's outline the circumstances in which an element might dissolve in a metal and create a solid solution. The rules are divided into two categories: interstitial solid solutions and substitutional solid solutions.

The following are the Hume-Rothery rules for solid substitutional solutions:

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5.14m/s ...............................................

The main role of smart materials in course reading is to mimic biological behavior and "respond to stimuli". The class of solid materials which is used in course reading is usually composed of two or more of the other classes of materials to achieve a combination of properties.

There is an importance of smart materials in course reading because smart materials and systems are able to sense and respond to the environment around them. They have the potential which helps to improve existing technology and add new functionality to products. They have applications in a wide variety of areas and could have an very important role in waste reduction process.

Smart materials are mainly divided into 4 categories which involves Polymers, Ceramics, Metals and Smart Materials.

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Dalton proposed that every single atom of an element is the same as every other atom of that element, while different atoms from different elements have different properties. However, atoms having different numbers of protons, electrons, and neutrons were not known during his time. Therefore, while the statement is mostly true, it was not Dalton that figured that out (the statement is FALSE).

John Dalton was a chemist and physicist. Here's most known for his atomic theory, where he proposed that each atom from the same element has the same properties, while different atoms (from different elements) have different properties. His theory was the first to describe all matter in terms of atoms and their property completely.

Attached below is an image of his book " "A New System of Chemical Philosophy" which tries to explain his theory.

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Good work on the hand-drawn graph. Wheat plant height vs. height is the title of your graph.

Data values are graphically represented in data plots, such as columns, lines, regions, and pie slices in a chart. Instead of wasting time on complicated tabular representations, it enables you to quickly draw an output from the data. Scientific data are typically plotted to highlight correlations between variables or to visualize variance, however not all data sets call for a plot. If there are just one or two points, it is simple to look at the data directly and there is little to no benefit from plotting them on a graph.

Wheat 1 data plots

(1,3) ,(2,2.9) ,(3,5) ,(4,6) ,(5,7) ,(6,8) ,(7,9) ,(8,10)

Wheat 2 data plots

(1,3) ,(2,3) ,(3,5) ,(4,6) ,(5,7) ,(6,8) ,(7,10) ,(8,10)

Wheat 3 data plots

(1,0) ,(2,2) ,(3,3) ,(4,4) ,(5,5) ,(6,7) ,(7,7) ,(8,7)

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The volume of aluminum that has the same number of atoms as 11 cm³ of mercury is 7.41 cm³.

The density of aluminum is 2.70 g/cm³, and the density of mercury is 13.53 g/cm³.

This means that 11 cm3 of mercury has a mass of

11 × 13.53 g = 150 g.

The atomic mass of aluminum is 26.98 g/mol, and the atomic mass of mercury is 200.59 g/mol.

This means that 150 g of mercury contains

150 / 200.59 = 0.75 moles of mercury.

There are 6.022 × 10²³ atoms in 1 mole of any substance.

This means that 0.75 moles of mercury contains 0.75 ×6.022 ×10²³ = 4.515 × 10²³atoms of mercury.

The density of aluminum is 2.70 g/cm³,

so 4.515 × 10²³ atoms of aluminum have a volume of 4.515 × 10²³ / 2.70 g/cm³ = 7.41 cm³.

Therefore, the volume of aluminum that has the same number of atoms as 11 cm³ of mercury is 7.41 cm³.

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The functional groups' Ether, alcohol, and aldehyde are present in Vanillin.

A functional group is a substituent or moiety of a molecule that, in the field of organic chemistry, is responsible for producing the signature chemical reactions of the molecule.

Regardless of the rest of the molecule's constituents, a functional group that is the same will always experience chemical reactions that are identical or very comparable to those reactions.

Because of this, it is possible to plan chemical synthesis, as well as forecast systematically the reactions of chemicals and the behavior of chemical compounds.

A functional group's reactivity can be altered by the presence of other functional groups in close proximity. In order to plan organic synthesis, functional group interconversion can be utilized as a part of the retrosynthetic analysis process.

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Faraday is a unit of electric charge, not a substance. It is equivalent to the charge on one mole of electrons, which is approximately 96,485 coulombs. Therefore, the number of moles in a certain amount of Faraday is not applicable as it is a unit of charge, not of substance.

Faraday is a unit of electric charge named after the British scientist Michael Faraday. It is defined as the amount of electric charge that is transported by a steady current of one ampere in one second. The Faraday is equivalent to the charge on Avogadro's number of electrons, approximately 6.022 x 10^23 electrons. The Faraday is often used in electrochemistry to express the magnitude of electric charge involved in chemical reactions. For example, in the electrolysis of water, the number of Faradays of charge required to produce a certain amount of hydrogen or oxygen is often measured.

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The concentration of the following in milligrams per liter will be: 0.01000 M Ca₂⁺ = 400.8 mg/ L, 0.02000 M H₂SO₄ = 1966.56 mg/L, 1.000 M HCO₃ = 61010 mg/L, 0.02000 M SO₄² = 1920.12 mg/L.

To convert the concentration of a solution from moles per liter (M) to milligrams per liter (mg/L), we need to multiply the molar concentration by the molar mass of the solute in grams.

0.01000 M Ca²⁺: The molar mass of Ca₂⁺ is 40.08 g/mol, so the concentration in mg/L is 0.01000 M × 40.08 g/mol × 1000 mg/g = 400.8 mg/L

0.02000 M H₂SO₄: The molar mass of H₂SO₄ is 98.08 g/mol, so the concentration in mg/L is 0.02000 M × 98.08 g/mol × 1000 mg/g = 1966.56 mg/L

1.000 M HCO₃-: The molar mass of HCO₃⁻ is 61.01 g/mol, so the concentration in mg/L is 1.000 M × 61.01 g/mol × 1000 mg/g = 61010 mg/L

0.02000 M SO₄²⁻: The molar mass of SO₄²⁻ is 96.06 g/mol, so the concentration in mg/L is 0.02000 M × 96.06 g/mol × 1000 mg/g = 1920.12 mg/L

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Answer:

To find the number of moles of hydrogen produced from 10.0 moles of aluminum, you need to balance the equation for the reaction between aluminum and sulfuric acid.

Step 1: Balance the equation:

2Al + 3H2SO4 --> Al2(SO4)3+3H2

Step 2: Determine the stoichiometric ratio of moles of hydrogen produced per mole of aluminum:

From the balanced equation, 3 moles of hydrogen are produced for every 2 moles of aluminum.

Step 3: Calculate the number of moles of hydrogen produced:

If you start with 10.0 moles of aluminum, then the number of moles of hydrogen produced would be 3 * (10.0 moles of Al / 2 moles of Al) = 15 moles of hydrogen.

Charles's law is best supported by a graph that shows how temperature and pressure are related.

Charles' Law states that, while volume is held constant, the size of a fixed quantity of gas changes in directly proportionate to the gas's extreme temperature. The absolute temperature is calculated using the Temperature scale, that is employed to check the temperature. Thus according Charles' law, a gas's amount is assumed to be directly correlated with its absolute heating.

Charles' law establishes a direct relationship between temperature and quantity. We can forecast how changes in parameters will impact a system's volume and temperatures thanks to Charles' law. The constant will be impacted by the number of moles present as well as the tension.

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The maximum equilibrium concentration of solute that can be achieved, the amount of solvent required to dissolve 1mol of solute, and the concentration of solute in a saturated solution.

A substance's solubility refers to its capacity to dissolve in a solvent. It refers to how much solute may dissolve in a specific amount of solvent at a specific temperature. The highest possible equilibrium concentration of a solute is determined by its solubility. The amount of solute that may dissolve in a certain amount of solvent at a particular temperature is represented by this number. The solubility product is the quantity of solvent needed to dissolve 1 g of solute. This is the volume of solvent needed to dissolve a specific substance.

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A sample of 0.53 g of carbon dioxide will be obtained by heating 1.31 g of calcium carbonate. The percent yield for this reaction will be 92%.

1CaCO₃(s) → 1Cao(s) + 1CO₂(g)

1.31 g                                  ?

% yield will be = actual yield / theoretical yield × 100

actual yield will be 0.53 gram and theoretical yield will be 0.576 gram

CaCO₃ will be 1.31 gram

1.31 gram of CaCO₃ → moles of CaCO₃ → moles of CO₂ → grams

1.31 g CaCO₃ × 1 mol CaCO₃ / 100.09 g CaCO₃ × 1 mole CO₂ / 1 mole CaCO₃ × 44.01g CO₂ / 1 mole CO₂ = 0.576 g of CO₂

% yield = 0.53 / 0.576 × 100

% yield = 92%

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2. It generally used previous ideas, and so it holds scientific consensus.

The kinetic molecular theory is a scientific theory that describes the motion of particles in a gas. It builds on previous ideas about the nature of gases, such as the idea that gases are made up of rapidly moving particles. The theory is widely accepted by scientists and is considered a fundamental concept in the field of thermodynamics.

It is favorable rather than the many oil to form the one large oil droplet droplets in an aqueous solution , the correct option is A) because there is less ordered water with large oil droplets, so higher entropy overall.

The entropy is the measure of the randomness or the disorder in the solution. The entropy increases the randomness increases and when the entropy decreases the arrangement will be the more ordered.

Thus, Because of the less ordered water with large oil droplets, so higher entropy overall in the energetically favorable rather than the many oil to form the one large oil droplet droplets that is protein monomers in that is protein complex in an aqueous solution.

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The following statements correctly describes chemical equation : Bonds between atoms break and reform.

Chemical reaction refers to the rearrangement of atoms and their bonds in reactants to yield new substances which are known as products.

Reactants go into reaction and products are yielded from reaction. Reaction require energy which is called endothermic reaction or it may release energy which is known as exothermic reaction.

Chemical equation tells us about the substances involved in reaction and chemical equation informs us about the symbols and formulae of substances involved in reaction. Chemical equation tells us about the atoms or molecules of reactants and products in reaction.

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Note: The question given on the portal is incomplete. Here is the complete question.

Question: Which statement correctly describes a chemical reaction?

Reactants come out of a reaction.

Energy is always released.

Bonds between atoms break and reform.

Products go into a reaction.

The Python data types that should be used for this data set are strings and integers.

'physics', 'chemistry',are the string data types in Python, 3011,3012 are the interger data types of python.A tuple would be the most appropriate data type for this data set because it is a collection of different data types that cannot be changed. Tuples use parentheses instead of square brackets, so the data set would be written as ('physics', 'chemistry', 3011, 3012).A tuple should be used for this data set because it allows the data to be stored in an immutable and easily accessible format. Tuples are also useful for storing items of different types, such as strings and integers, which is the case for this data set.

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Answer:

As you go up the fractionating column, the hydrocarbons have: lower boiling points lower viscosity (they flow more easily) higher flammability (they ignite more easily) This means that in general hydrocarbons with small molecules make better fuels than hydrocarbons with large molecules.

Ozonolysis of Alkenes. It is  process of the cleavage of unsaturated bonds of alkenes, alkynes in an organic reactions.

When alkene is subjected to the ozonolysis, can be oxidized with ozone to form aldehydes or ketones, or carboxylic acids. Oxidation of alkenes with  help of ozone can give alcohol, aldehydes, ketones, or carboxylic acids.

Alkynes undergo ozonolysis to give the acid anhydrides. If water is present in reaction, acid anhydride undergoes hydrolysis to yield two carboxylic acids.

The first step in mechanism of ozonolysis is the initial electrophilic addition of ozone to the Carbon- Carbon double bond, which then form the molozonide intermediate. Due to  unstable mol ozonide molecule, it continues further with  reaction and breaks apart to form a carbonyl and a carbonyl oxide molecule.

Ozonolysis has been widely used to determine  structure of natural products. It has also been used to investigate structure of aromatic compounds as well as to synthesize rare aldehydes.

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"In a process where 50% acetic acid solution could accidentally come in contact with ethylene glycol, hazards that should be given carful consideration including the possibility of polymerization, heat generation and pressure build-up". The given statement is true.

The reaction of an alcohol (ethylene glycol) with an acid (acetic acid) in the presence of conc. H₂SO₄ to form an ester is called an esterification reaction. Ethyl acetate is formed from the reaction of Ethyl alcohol and Acetic acid in the presence of conc. H₂SO₄.

This process can be hazardous if safety measures are not taken as a lot of heat is generated throughout the process and there is a possibility of polymerization.

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The amount of solute that needs to be added to make the boiling point of solution upto 104.5 °C is 0.5263 gm

Density = 1.12 gm/ml

Volume = 100 ml

Density = Mass / volume

Thus Mass of solution = 1.12 * 100 = 112 gm

Mass of NaCl = 14.6 * 112 / 100 = 16.35 gm

Mass of solvent = 112 - 16.35 =   95.65 gm

ΔTb = i* Kb* m

Where ΔTb = elevation in boiling point.

Kb = the base dissociation constant.

m = molarity of solution

104.6 - 100 = 1.8 * 0.52 * mass of solute / mass of solvent in kg

4.6 = 0.936 * mass of solute / 0.09565

Mass of solute = 4.6 * 0.09565 ÷0.836

= 0.5263 gm

1) Solutions of any solute are consistent with the relationship ΔTb =Kbm (where Tb is an increase in boiling point and'm' represents solution molality). 2) Non-volatile solute-only diluted solutions. 3) Non-volatile solutions in all concentrations.

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The above question is incomplete. Check below the complete question-

A 100.0-mL aqueous sodium chloride solution is 14.5% NaCl by mass and has a density of 1.12 g/mL.

What mass of solute would you add to make the boiling point of the solution 104.2 degree C? (Use i = 1.8 for NaCl)

Cyclohexane does not react with concentrated Sulphuric acid because it is a Sulphuric, saturated hydrocarbon with no functional groups that can be readily attacked by Sulphuric acid.

Sulphuric acid is a strong protonic acid and primarily reacts with compounds that contain functional groups, such as carbonyls, amines, and alcohols.

In order for a reaction to occur, the Sulphuric acid must be able to donate a proton (H+) to the target molecule, which requires the presence of an electrophilic center, such as a carbonyl group or an amine.

Cyclohexane, being a non-polar hydrocarbon, does not have any electrophilic centers and is not able to react with concentrated Sulphuric acid.

As a result, cyclohexane is essentially unreactive towards concentrated sulfuric acid, and the reaction does not occur.

This lack of reactivity makes cyclohexane a useful solvent in many chemical reactions as it does not interfere with the desired reaction, and it can also be used as a reference compound to compare the reactivity of other compounds.

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Ceramics and metals have different mechanical properties, including size dependence of strength. In ceramics, the strength is dependent on the size due to their brittle nature and the presence of microcracks. In metals, however, the strength is not size dependent due to their ductile nature and the ability to deform plastically without breaking.

In ceramics, small objects can have a higher strength than larger ones because small ceramics are less likely to have cracks or flaws, which can weaken the material. The size-dependent strength in ceramics arises from the high surface-to-volume ratio of small objects, which means that more stress is applied to the surface and any cracks or flaws present are more likely to cause failure.

In contrast, metals have a lower surface-to-volume ratio, so the stress is distributed more evenly. Additionally, metals can deform plastically under stress, which helps to distribute the stress and reduce the likelihood of fracture. This is why the strength of metals is not size dependent.

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Based on the Laws of Thermodynamics, when a beaker of isobutyl alcohol is put inside a sealed tank containing isobutyl alcohol gas at 103.

Degree c and 619. torr, the pressure inside the tank will be higher than the pressure in the beaker, causing some of the liquid to evaporate and increase the liquid volume in the beaker. Therefore, after ten minutes, there will be more liquid in the beaker than before.

When a beaker of isobutyl alcohol is put inside a sealed tank containing isobutyl alcohol gas at 103°C and 619 torr, the molecules of isobutyl alcohol gas in the tank will be more energetic due to the increased temperature. As a result, they will move faster and collide with each other more frequently, raising the pressure inside the tank. The higher pressure in the tank will push molecules of isobutyl alcohol gas into the beaker, where they will condense into liquid due to the decrease in pressure.

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The minimum concentration of dissolved oxygen required for a complete degradation of the organic matter in this water body is 4.30 mg/L.

To determine the minimum concentration of dissolved oxygen in the water body, we need to consider the stoichiometry of the reaction between the organic matter (CH2O) and oxygen (O2) to form carbon dioxide (CO2) and water (H2O):

CH2O + O2 → CO2 + H2O

The stoichiometric ratio between CH2O and O2 is 1:1, meaning that one molecule of CH2O reacts with one molecule of O2. Therefore, the minimum concentration of dissolved oxygen in the water body can be calculated as follows:

O2 (mg/L) = CH2O (mg/L) = 4.30 mg/L

So, the minimum concentration of dissolved oxygen required for a complete degradation of the organic matter in this water body is 4.30 mg/L.

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When the density is measure , the correct is  c. the temperature should be specified.

The density is the ratio between the mass in the kg and the volume in the m³. The density of the graduated cylinder should be measure in the specified temperature. The expression for the density is expressed as follows :

The density = mass / volume

The density of the substance is measurement of the mass per unit the volume. The SI unit of the density is kg/m³, or we use g/cm³ for the solids, g/ml for the liquids, and the g/L for gases.

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At 323°F (161.6°C), the physical state of indium would be a liquid, as the temperature is above its melting point of 156.2°C.

The melting point of indium is 156.2°C. At 323°F, which is equivalent to approximately 161.6°C, the physical state of indium would be a liquid.

The melting point of a substance is the temperature at which it changes from a solid state to a liquid state. When the temperature of a solid exceeds its melting point, the bonds between its molecules weaken and eventually break, allowing the molecules to move freely and form a liquid.

In this case, since the temperature of 323°F (161.6°C) is greater than the melting point of indium (156.2°C), it can be concluded that indium would be in a liquid state at that temperature.

It's important to note that the physical state of a substance is dependent not only on temperature, but also on pressure. However, in this case, the standard pressure of 1 atm is assumed, so the physical state of indium can be determined based on temperature alone.

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