Which of the following best compares a fission reaction and a fusion reaction?
A.Both reactions absorb energy; in a fission reaction, two smaller atoms combine to form one larger atom, while in a fusion reaction, one large atom splits into smaller atoms.
B.Both reactions absorb energy; in a fission reaction, one atom splits into two smaller atoms, while in a fusion reaction, two smaller atoms combine to form one larger atom. C.Both reactions release energy; in a fission reaction, two smaller atoms combine to form one larger atom, while in a fusion reaction, one large atom splits into smaller atoms.
D.Both reactions release energy; in a fission reaction, one atom splits into two smaller atoms, while in a fusion reaction, two smaller atoms combine to form one larger atom.

Molecular formula of a molecule is C₂H₂.

Empirical formula gives the proportion of the elements present in a compound.

The proportion od carbon and hydrogen is 1 : 1.

n(C) : n(Cl) = 1 : 1

n(C) = n(H) = n; amount of substance of carbon and hydrogen is the same in a molecule

M(molecule) = 26 g/mol; molar mass of a molecule

M(C) = 12 g/mol; molar mass of carbon

M(H) = 1 g/mol; molar mass of hydrogen

M(molecule) = n × M(C) + n × M(H)

M(molecule) = n × 12 g/mol + n × 1 g/mol

26 g/mol = n × 13 g/mol

n = n(C) = n(H) = 2

There are 2 atoms of carbon and two atoms of hydrogen in a molecule, so molecular formula is C₂H₂.

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The diameter water pipe is required to handle 0.075 m3/s and a 500 kpa pressure drop is 149.4mm.

The force applied perpendicularly to an object's surface, denoted by the symbol p or P, is stated to be applied per unit area that the force is claimed to be dispersed over. The pressure that is supposed to be related to the ambient pressure is called the gauge pressure, also known as gauge pressure.

[tex]Q=0.075m^3/s[/tex]

ΔP=500kPa

L=175m

e=2.5mm

Properties of water :

[tex]\rho=1000kg/m^3[/tex]

[tex]\mu=0.001N-s/m^2[/tex]

Reynold's number Re=ρVD/μ

where V= Q/A=Q/(π/4)[tex]D^2[/tex]=4Q/π[tex]D^2[/tex]

Re=(ρ(4Q/π[tex]D^2[/tex])D)/μ

=4ρQ/πDμ=4(1000kg/[tex]m^2[/tex])(0.075[tex]m^3[/tex]/s)/πD(0.001N-s/[tex]m^2[/tex])

Re=(95492.966/D)

Darcy friction formula

f=1.325/[ln(e/3.70+5.74/[tex]Re^{0.9}[/tex])[tex]]^2[/tex]

f=1.325/[ln(e/3.70+5.74/(95492.966/D[tex])^{0.9}[/tex])[tex]]^2[/tex]____(1)

from, [tex]h_L[/tex]=8fL[tex]Q^2[/tex]/g[tex]D^2[/tex][tex]\pi^2[/tex]

Δρ/ρμ=8FL[tex]Q^2[/tex]/[tex]\pi^2[/tex]g[tex]D^5[/tex]

500×[tex]10^3[/tex]Pa/(1000kg/[tex]m^3[/tex])=8f(175m)(0.075[tex]m^3[/tex]/s[tex])^2[/tex]/[tex]\pi^2[/tex][tex]D^5[/tex]

f/[tex]D^5[/tex]=626.642

f=626.642[tex]D^5[/tex]_____(2)

solving equation 1 and 2

we get f=0.0467 and D=0.1494m

D=149.4mm

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Answer:

magnesium

Explanation:

Water molecules are held together by hydrogen bonds because they are polar covalent bond molecules.

The smallest particle of a substance has all the physical and chemical properties of that substance. A molecule is made up of one or more atoms. If they contain multiple atoms, those atoms can be the same (the oxygen molecule has two oxygen atoms) or different (the water molecule has two hydrogen atoms and one oxygen atom). Biomolecules such as proteins and DNA are made up of thousands of atoms.

A simple molecule contains only a few atoms joined by covalent bonds. An example is carbon dioxide (CO 2 ), whose molecule contains a carbon atom bonded to two oxygen atoms.

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When Methane thiol, CH₃SH, reacts with O₂, 25.8 grams of Sulfur dioxide, SO₂ is formed and limiting reactant is Oxygen, O₂.

The balanced chemical reaction is:

CH₃SH(g) + 3 O₂(g) → 2 H₂O(g) + CO₂(g) + SO₂(g)

             Molecular weights:       Actual/given mass:

CH₃SH = 48.11 g/mol                    27.3 g      

O₂         = 32.01 g/mol                    38.6 g  

H₂O      = 18.01 g/mol            

CO₂      = 44.01 g/mol                  

SO₂       = 64.06 g/mol

Number of moles =    Given mass    

                                  Molecular mass

So,

moles of methane thiol = 27.3 ÷ 48.11= 0.56 moles

moles of oxygen = 32.01÷38.6 = 0.82 moles

From the reaction,

1 mole of CH₃SH reacts with 3 moles of O₂  to give 1 mole of SO₂

Thus, 0.56 moles of CH₃SH reacts to form 1 × 0.56 = 0.56 moles of SO₂

Mass of SO₂ produced is 0.56 × 64.06 g = 35.86 g

moles of SO₂ = 35.86 ÷ 64.06 = 0.55 moles

So,

The sequence of amino acid residues in a protein is considered primary structure and is always read from the N-terminal end of protein.

The food we eat chiefly consists of three nutrients namely carbohydrates, proteins and fats.

Proteins are the most abundant among the bio molecules present in the living organisms.

The word protein is derived from Greek word, “proteios” which means primary or of prime importance.

The proteins are the polymers of amino acids.

The structure of amino acid consists of a carbon atom surrounded by four functional groups i.e, Carboxyl(COOH) group, the Amino(NH2) group, hydrogen(H) and an alkyl group(R).

In a protein, amino acids are linked to each other by peptide bonds which are formed between the COOH group of one amino acid and the NH2 group of another amino acid, as shown in the adjoining image.

In primary structure, the amino acids are joined to each other in a linear manner without any branching, as shown in the given diagram.

Hence, the sequence of amino acid residues in a protein is considered primary structure and is always read from the N-terminal end of protein.

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Answer:

The pH scale ranges from 0-14.

Explanation:

Zero is the most acidic measurement while six would be the least acidic of the acids, seven is a pure substance, neither acidic nor basic, eight is the least basic measurement while 14 is the most basic of the bases.

To prepare the HCl solution if 1% m/v HCL was available, take 2.5ml of the stock solution and makeup to mark with 7.5 ml of water.

HCl is hydrochloric acid, and it is a highly reactive and strong acid.

Given, the dilution formula

C₁V₁= C₂V₂

C₁ = initial concentration

V₁ = initial volume

C₂ = Final concentration

V₂ = final volume

The values are

C₁ = 1% m/v

V₁ = ?

C₂ = 0.25% m/v

V₂ =  10 ml

V₁  = C₂V₂/C₁

V₁  = 0.25% m/v ×  10 ml /1% m/v

V₁  = 2.5 ml

Thus, the amount of HCl is 2.5ml of the stock solution. The amount of water is 7.5 ml of water.

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Charge can be transferred from one object to another in three way conduction, polarization, and friction

Whenever electrons are transferred between objects, neutral matter becomes charged and three ways this can occur are referred to as conduction, polarization, and friction conduction means when there is direct contact between materials that differ in their ability to give up or accept electrons when two different materials are rubbed together, there is a transfer of electrons from one material to the other material and this causes one object to become positively charged (the electron loser) and the other object to become negatively charged (the electron gainer)

Here given object is water + balloon; balloon + wall; tape then you rub a balloon against your clothes and it sticks to the wall, you are adding a surplus of electrons (negative charges) to the surface of the balloon the wall is now more positively charged than the balloon and we tested the conductivity of deionized water positively charged

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The experiment is performed to determine the solution and the observations. Variables are the data that are present in the experiment. Temperature is the independent and solubility is the dependent variable.

Independent variables are defined by the variables that vary in the experiment and are the temperature in this case as the dissolution capability of the sugar is studied in the experiment.

The solubility of the sugar is a dependent variable as it varies based on the temperature of the beaker which affects the solubility factor. It gets altered by the temperature.

Therefore, the temperature is the independent variable.

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Approximately, 21 kJ was released from the combustion of the 1-g sample.

Because heat is a type of energy, the SI unit for heat is also joules (J), which is defined as the quantity of energy required to increase the temperature of a given mass by one degree. This is significant because heat is a form of energy. Heat is the result of the movement of kinetic energy within a material or an item, or from an energy source to a material or an object. Radiation, conduction, and convection are the three mechanisms through which such energy can be transferred. The joule is the S.I. unit for heat.

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Answer:

B

Explanation:

seriously (MÀJÌKÁÎ DÊẞÜ)

The reaction of 1,3,3-trimethylcyclohexene in the presence of nbs (w/trace hbr) 3 products are formed.

1,3,3-trimethylcyclohexene in the presence of nbs (w/trace hbr) 3 products are formed 1,3,3-trimethylcyclohexene molecular formula is C9H16 in this structure 3 methyl group are present 2methyl are present in 1 carbon of benzene ring means 1 para position and 1 methyl group is present on meta position so in 1st step nbs means n bromosuccinimide attack on methyl group and br are are join means on para group 2 methyl are attach in that 2 methyl 1 methyl is attach to the br group now in 2nd step br are attach on allylic carbon in 3rd step br are attach on next para position so here 3 products are formed.

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Engineers in Russia invented a new way to create colorful art with constructive laser art.

Modern industrial life and urban space were intended to be reflected in constructivist art. It produces art using industrial manufacturing techniques and inexpensive materials.

The idea behind constructivism was to replace conventional art by emphasizing engineering rather than painting. Russia started a colorful way to create new art.

Thus, Russian engineers developed a fresh method for producing vivid artwork using constructive laser art.

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O16, O17, and O18 are three isotopes with an equal number of neutrons and protons. Cl 35 and Cl 37 have an equal number of protons.

Isotopes:

Isotopes contain the same number of electrons and protons. They contain a different number of neutrons.

a. O16, O17, and O18 are three isotopes with an equal number of neutrons and protons.

b. Cl 35 and Cl 37 have an equal number of protons.

c. Isotopes are atoms that have the same protons but different neutrons.

Therefore, O16, O17, and O18 are three isotopes with an equal number of neutrons and protons. Cl 35 and Cl 37 have an equal number of protons.

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Answer:

a diagram of hydrogen has 1 proton with charge (+1) inside it's nucleus and no neutrons

also it has 1 electron with charge (-1) outside the nucleus in orbit

Explanation:

The mass percent of gold in the piece is 79.08%

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

Thus,

Mass = density × volume

Mass = density × volume

Mass of gold = 19.3 × V

Mass of gold = 19.3V

Mass = density × volume

Mass of silver = 10.5 × (1.25 - V)

Mass of silver = 13.125 - 10.5V

Mass of piece = mass of gold + mass of silver

20.5 = 19.3V + 13.125 - 10.5V

Collect like terms

19.3V - 10.5V = 20.5 - 13.125

8.8V = 7.375

Divide both sides by 8.8

V = 7.375 / 8.8

Volume of gold = 0.84 cm³

Thus,

Mass of gold = 19.3V

Mass of gold = 19.3 × 0.84

Mass of gold = 16.212 g

Mass percent of gold = (mass of gold / mass of piece) × 100

Mass percent of gold = (16.212 / 20.5) × 100

Mass percent of gold = 79.08%

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Living systems are made out of - phosphorus, sulphur and carbon.

Matter itself has energy and matter can be converted to energy and vice versa.

Atoms associate with one another to strengthen the stability of their arrangement of negatively charged electrons.

1. Common elements of the living organisms are - Nitrogen, oxygen, phosphorus, sulphur and carbon. These are the 6 most knowing common elements.

2. It's included more then 95% to 97% mass on a human body . Matter itself has energy and matter can be converted to energy and vice versa. The equal amount of matter can have totally different amount of energy and so show up the different type of matter.

3. Electron can be transferred one atom to another this is the most basic way that outer electron can from atom bond .

Atoms associate with one another to strengthen the stability of their arrangement of negatively charged electrons. The positively charged nucleus is surrounded by these electrons in so-called "shells," and according to quantum theory, each shell becomes stable once it has a particular amount of electrons.

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The term molecular mass can only be applied to a(n) covalent compound since compounds do not consist of molecules. the correct term that is applicable to all types of compounds is mass. covalent

The molecular components of a compound offer the smallest integer ratio of the atoms withinside the compound. Different compounds may have identical molecular components. The term "molecular weight" isn't suitable while speaking about ionic compounds that aren't made from personal molecules

An atom and its ion have identical atomic mass due to the fact the mass of the electron that turns an atom into an ion is negligible. The term "molecular weight" won't be suitable due to the fact the components of an ionic compound now no longer describe the composition of an unmarried molecule.

Something like desk salt (NaCl) is a compound due to the fact it's miles made from a couple of elements (sodium and chlorine), however, the bonds that keep NaCl collectively are ionic bonds, so in a molecule There is none. Sodium chloride may be stated to be an ionic compound if desired.

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Matter is anything that has mass and occupies space.

Characteristics:

1. Volume

2. Density

3. Compressibility

Yellow paint has 0.511 % PbCrO4 by mass

Mass of PbCrO4 in 1 kg of paint = (0.511 / 100) * 1 kg = 0.00511 kg = 5.11 g

Moles of PbCrO4 = 5.11 g/ 323.19 g/mol

                           = 0.0158 moles

Moles of K2CrO4 also = 0.0158 moles

Moles of FeCr2O4 = 0.0158 moles K2CrO4 * (4 mole FeCr2O4 / 8 moles K2CrO4)

                            = 0.0079 moles

Mass of FeCr2O4 (chromite) = 0.0079 moles * 223.83 g/mol

                                            = 1.77 g

Paints are divided into two types: oil-based paints and water-based paints. Oil paints are usually used as a primer, undercoat, and topcoat. In the past, we relied heavily on oil-based paints for surface durability and longevity, but today water-based paints are on par. It is used for prolongation and acts as a barrier against environmental influences. Paint consists of pigments, solvents, resins, and various additives. Pigments give the paint its color. Solvents make application easier. The resin helps dry. Additives range from fillers to antifungals. There are hundreds of different natural and synthetic pigments.

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The average kinetic energy of an object's particles increases with increasing temperature. The object's thermal energy grows as the average kinetic energy of its particles rises. As a result, an object's thermal energy rises as its temperature does.

The average kinetic energy of the particles in a substance is measured by temperature. The overall kinetic energy of the particles in a substance is measured by its thermal energy. The temperature and thermal energy of a substance increase with particle mobility. Temperature and thermal energy are strongly connected. Both reflect the motional kinetic energy of matter particles. Thermal energy is the total kinetic energy of matter particles, whereas temperature is the average kinetic energy of matter particles.

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a. 55.0 g of ti = 0.02 moles

b. 16.9 mg of na = 0.62 moles

c.  7.95 x 1024 ne atoms = 0.4 moles

d. 25 xe atoms = 0.0037 moles

In chemistry, the term "mole" (sometimes written "mole") refers to a standard scientific unit for measuring vast amounts of extremely small objects like atoms, molecules, or other specific particles.

The mole represents 6.02214076 × 10^23 units, an astronomically huge number. With effect from May 20, 2019, the International System of Units (SI) adopted this number as the mole definition by the General Conference on Weights and Measures.

The number of atoms found in 12 grams of carbon-12, as established scientifically, made up the definition of the mole in the past. The quantity of units in a mole is also known as Avogadro's number or Avogadro's constant in honor of the Italian physicist Amedeo Avogadro (1776–1856).

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Answer: C

Explanation:

A. color.

B. boiling point.

C. flammability.

D. taste.

E. density. is this the whole question

Control Experiment: Those experiment where a control is taken as a reference to notice the changes in same reaction in the presence of external stress.

Need for a control in a experiment: The control is required to analyse the effect of stress applied to reaction. For e.g. If there are two compounds AB and XY & they are undergoing displacement reaction to form AX & BY, But all sudden another salt let MN is added into the reaction then there are possibilities of formation of different products depending upon the reactivity of initial reactants and external compound. The product can be same as our Control i.e. AB & XY if MN remains inert in the reaction. That's why control is important to compare the results.

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Composition in mole % is 0.091%

Given:

Copper alloy has 9.3 wt % Al2O3 = 9.3 wt/wt%

So the mol % of Al2O3 can be find by

      Mole% = w/w% / Mwt

      Mwt og Al2o3 = 101.968

      Mole% = w/w% / Mwt

                  = 9.3 / 101.96

      Mole% = 0.091%

The term "mole percent" (mol%) refers to the mole fraction in a different format. By multiplying the mole fraction by 100, the mole percent of the specified component can be calculated. Mole fraction multiplied by 100 equals Mole percent.

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If we assume the density of water is 1.00 g/mL, the mass of water is 250 g

To find mass here density is given so we use density formula density=mass/volume

The volume of water is given but not the mass. Hence volume is converted into mass by using the density of water, which 1.0 g /ml. Therefore, Mass of water = 250 ml x 1.0 g/ml = 250 g

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The classification is:

Organic substances known as amino acids have both amino and carboxylic acid functional groups. Only 22 of the hundreds of amino acids found in nature are alpha amino acids, which are by far the most common and make up proteins. Only 22 alpha amino acids are found in the genetic code. Alpha-, beta-, gamma-, or delta-amino acids can be categorized according to where the main structural functional groups are located; further classifications relate to polarity, ionization, and the kind of side chain group (aliphatic, acyclic, aromatic, containing hydroxyl or sulfur, etc.). Amino acid residues are the second-largest component of human muscles and other tissues, behind water, in the form of proteins.

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The final temperature of the gas is 137°C at which it must be heated to occupy the volume of 557 ml.

Given,

V₁= 371ml

V₂ = 557 ml

T₁ = 0°C or 273 okay

We ought to locate the very last temperature of the fuel that must be heated.

as the cylinder is transferring freely, the pressure is equal to the outside pressure, i.e., 1 atm, beneath all situations.

consequently, by using the use of Charles regulation, we get

V₁ / T₁ = V₂ / T₂

where V₁ and V₂ are preliminary and very last volumes

and T₁ and T₂ are preliminary and very last temperatures (in Kelvin).

accordingly, the very last temperature is

T₂ = V₂ × T₁ / V₁

Or, T₂ = 557 x (zero+273) / 371

Or, T₂ = 410 okay

Or, T₂ = 137°C

consequently the final temperature is 137°C.

The physical principle known as Charles' law states that the volume of a gas equals a constant value multiplied by its temperature as measured on the Kelvin scale (zero Kelvin corresponds to -273.15 degrees Celsius)

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Answer:

A liquid has a defined volume, but can change its shape. Water is an example of a liquid. A gas lacks either a defined shape or volume. Water vapor and air are examples of gas.

...

Examples of Solids

Brick.Coin.Iron bar.Banana.Rock.Sand.Glass (no, it does not flow)Aluminum foil.