In a redox reaction,

the oxidizing agent undergoes oxidation
the reducing agent undergoes reduction
the oxidizing agents undergoes reduction
O the oxidizing agent loses electrons

A. n = 105 lines/mm = 105000 lines/m

d*sin θ  = m*λ

(1/105000) * sin θ = 1*498*10^-9 ⇒     θ =  3.0 degree

Also  (1/105000) * sin θ = 1*569*10^-9 ⇒     θ =  3.43 degree

Δθ = 3.43° – 3.0°

Δθ = 0.43°

b) Chromatic Resolving power, R = λ / Δλ

λ  / Δλ  =  m (width) n

589 /0.59 = 2 (width) (105000)

Width = 4.75 mm

Diffraction gratings can split beams of different wavelengths into a spectrum of related lines through the principle of diffraction. In certain directions, only waves of certain wavelengths have obtained the rest are destroyed by their respective interference. other.

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The relationship between process capability index, Cp and process capability ratio, Cr is given as Cp = 1/Cr.

In statistics, process capability index is used to measure the variations or changes that occur in a process.

In general, the it lies between the specification limits which are also held in check while performing the Process capability index.

As we know that different processes has different optimal situations which help us to contrast the processes and also help us to identify if the obtained results meet our expectations.

Simply put, Process capability index also called process capability ratio is a statistical measurement method to identify the possible variations in a process.

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Answer:

compound

Explanation:

According to the given statement LSD molecules catalyze the breakdown of dopamine in the synaptic cleft.

The correct option is C.

A molecule is the term used to describe the aggregate of atoms that results from the formation of covalent bonds. Therefore, we might claim that what an atom is the most basic component of a covalent composite. The two atoms Na+ and Cl- form a crystal-like lattice in salt, an ionic compound. There are many sodium chloride molecules in salt water.

Table salt (NaCl) is a complex because it contains two different types of elements (sodium and chlorine), but it also not a molecule because of the ionic bond that holds it together. A lot of atoms are bound together to form gas molecules.

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Answer:" For example, when hydrogen gas, H2(g), is burned in the presence of gaseous oxygen, O2(g), a new substance, liquid water, H2O(l ), forms. The covalent bonds within the H2 molecules and O2 molecules break, and new covalent bonds form between oxygen atoms and hydrogen atoms (Figure 7.1)."

Explanation:

Answer:

 a supply of electric charges which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges.

Explanation:

There's your answer have a good day

4.447 x10^13 J  is the nuclear binding energy per mole if the mass defect of a certain isotope is 0.1172 u per atom or 0.1172 g per mol? express your answer in joules.

BE = dleta mc^2.

Given that, delta m = mass defect = 0.4941 g per mol = 0.4941/1000 kg/mol c = 3x10^8 m/s

BE = ( 0.4941/1000) x (3x10^8)^2= 4.4469 x10^13

    = 4.447 x10^13 J

Nuclear binding energy is energy required to completely separate an atomic nucleus in with its constituting protons and neutrons, or the energy freed by combining protons and neutrons into a single nucleus. Isotopes are atoms that have the same number of protons but number of protons. They have nearly identical chemical composition but differ in volume and thus in physicochemical parameters.

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Given:

Sum of masses of two isotopes = 371.9087 u

Re-185 natural abudance = 37.40%

Re-187 natural abudance = 62.60%

Known:

atomic weight of Re = 186.207 u

Atomic mass of Re-185:

To find the atomic mass of Re-185, take the total mass given and subtract atomic weight.

abundance of Re-185 = 37.40% = 0.3740

(371.9087 - x) = atomic weight of Re-187 in u

To find mass of Re-187:

abundance of Re-187 = 62.60% = 0.6260

Solution:

Step 1. Multiply x times the abundance of Re-185 and multiply (371.9087 - x) times the abundance of Re-187.

Re-185: (0.3740)(x) = 0.3740x

Re-187: (0.6260)(371.9087 - x) = 232.8148462 - 0.6260x

Step 2. Add the results and set them equal to 186.207.

0.3740x + 232.8148462 - 0.6260x = 186.207

Step 3. Solve for x by subtracting 232.8148462 from both sides and then divide both sides by -0.2520.

0.3740x + 232.8148462 - 0.6260x - 232.8148462 = 186.207 -

232.8148462

0.3740x - 0.6260x = -46.6078462

-0.2520x = -46.6078462

-0.2520x/-0.2520x = -46.6078462/-0.2520

x = 184.9517706 u

Step 4. Atomic weights of Re-185 and Re-187.

x = 185.0 u = the atomic weight of Re-185

(371.9087 - 184.9517706) = 186.9569294 = 187.0 u = the atomic weight of Re-187

Therefore the atomic weight of Re-185 is 185.0 u, and the atomic weight of Re-187 is 187.0 u.

To prepare a 500.0 g 4.00% KOH solution, you will need 20.0 g of KOH and 480.0 g of water.

A 4.00% KOH solution means that 4.00 g of KOH is present in 100.00 g of solution. To calculate the amount of KOH needed for a 500.0 g solution, we can set up a proportion:

(4.00 g KOH / 100.00 g solution) = (x g KOH / 500.0 g solution)

Cross-multiplying and solving for x, we find:

x g KOH = (4.00 g KOH / 100.00 g solution) * 500.0 g solution = 20.0 g KOH

So, you will need 20.0 g of KOH to prepare the solution.

To determine the amount of water needed, we can subtract the mass of KOH from the total mass of the solution:

Mass of water = Total mass of solution - Mass of KOH = 500.0 g - 20.0 g = 480.0 g

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Answer:

The answers are B and D.

Explanation:

This is because neutralisation process that contain sodium, potassium and ammonium will produce salt and water.

Answer:

pure substances contain small amount of impurities . mixture contain large amounts of impurities

Pure substances are either elements or compounds while mixtures are homogeneous or heterogeneous combinations.

Elements are pure substances as they cannot be broken down into simple substances by any chemical or physical methods as they have only one type of atom in the whole composition.

A pure substance is composed of two or more elements that are chemically combined in a definite proportion. That type of pure substance is called a compound. Water is a pure compound made up of a combination of oxygen and hydrogen.

A mixture is composed of two or more different types of substances which are physically combined. A mixture can separate back into its original components. These types of impure substances are also referred to as mixtures.

A mixture can be either homogeneous or heterogeneous.  Cement is a calcium compound solid it is considered a homogeneous mixture while famous gaseous heterogeneous mixes such as cologne and perfume.

Therefore, statement (C) best compares pure substances to mixtures.

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Answer:

combining iron, carbon and transition metals such as chromium and nickel.

Explanation:

Steels are alloys of iron and carbon. Steel is hard, tough and strong. The amount of carbon present in varies between 0.1 and 1.5% and it determines the hardness of steel. The higher the carbon content, the harder the steel produced. Also, the amount of heat treatment as well as presence of other elements determines the properties of steel produced.

Steel can be combined with other elements such as nickel, chromium, and manganese to produce various other alloys of steel . These alloys have various desirable properties than ordinary steel such as resistance to corrosion, high tensile strength and luster.

Answer:

New growth of trees is an exception

Explanation:

when volcanoes erupt, they release hot magma that is destructive to the environment causing personal damage, lack of breathable air and death.

heat produce cannot in any way help in growth of trees

Answer:

A

Explanation:

the boat does not have a force to counter act the boys it must give which means it moves cause it is one something that is not as dense as the boy (I THINK)

Two isotopes of any particular element differs on the count of number of neutrons present on its nucleus.

Isotopes are particular atomic species (or nuclides, as specialized term) of a similar component. They have a similar nuclear number (number of protons in their cores) and position in the occasional table (and subsequently have a place with a similar synthetic component), however contrast in nucleon numbers (mass numbers) because of various quantities of neutrons in their cores. While all isotopes of a given component have practically similar substance properties, they have different nuclear masses and actual properties.

The term isotope is framed from the Greek roots isos and topos , signifying "a similar spot"; consequently, the importance behind the name is that various isotopes of a solitary component possess a similar situation on the periodic table. It was begat by Scottish specialist and essayist Margaret Todd in 1913 in an idea to the English scientist Frederick Soddy.

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Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.

Explanation:

density = mass/volume

density = 89.6/10

density = 8.96g/cm³

The image depicts the initial atoms when calcium and sulfur form an ionic compound is third number image. Therefore, option C is correct.

The term an ionic compound is defined as compounds consist of ions that produce charged particles when an atom or group of atoms gains or loses electrons. A cation is an ion charged positively, and an anion is an ion charged negatively.

Calcium (Ca) atom when reacts with sulfur (S) and produce an ionic compound. In the compound calcium sulphide, Ca acts as a cation, and S acts as an anion.

Thus, option C is correct.

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Answer:

C

Explanation:

Explanation:

The answer is mentioned above.

Hope it helps.

No, boiling water would not lower the lead concentration. Lead does not evaporate when boiled.

Boiling water can only help reduce bacteria and other contaminants in the water. However, it does not reduce lead or any other metals present in the water. Furthermore, boiling contaminated water can increase the concentration of lead because it causes some of the water to evaporate, leaving the metals behind.

Therefore, boiling water is not a recommended solution to reduce the lead concentration. The best solution is to use a water filter specifically designed to remove lead or get in touch with a water treatment professional for assistance.

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Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

For N2, 1 is the right whole number coefficient. N2 + 3H2 → 2NH3 is the balanced chemical reaction.

Equal numbers and types of each atom appear on both sides in case of balanced chemical equations, which is why they are called so. A balanced equation must have coefficients that are the simplest whole number ratio. For the chemical equation to adhere to the rule of conservation of mass, it must be balanced.

Equal numbers of atoms from various elements are present in both the reactants and the products in balanced chemical equations. Different elements' atom counts in the reactants and products of unbalanced chemical equations are varied.

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33.0745 g of CO2 would be necessary to produce 6 grams of oxygen.

Step 1: Write the balanced equation for the production of oxygen

2 CO₂(g)⇒ 2 CO(g) + O₂(g)

Step 2: Calculate the mass of oxygen produced over a 2 hour period

The MOXIE produces 6.0 g of oxygen per hour.

2 h × 6.0 g/1 h = 12.0 g

Step 3: Calculate the moles corresponding to 12.0 g of O₂

The molar mass of O₂ is 32.00 g/mol.

12.0 g × 1 mol/32.00 g = 0.375 mol

Step 4: Calculate the number of moles of CO₂ needed to produce 0.375 moles of O₂

The molar ratio of CO₂ to O₂ is 2:1. The moles of CO₂ needed are 2/1 × 0.375 mol = 0.75 mol

Step 5: Calculate the mass corresponding to 0.75 moles of CO₂

The molar mass of CO₂ is 44.01 g/mol.

0.75 mol × 44.01 g/mol = 33.0075 g

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Answer:

Balanced equation: 1CH3CH2OH + 3O2 → 2CO2 + 3H2O

Answer:

Ag

Explanation:

atomic 33 because it what what sence

Answer

Volume of O2 = 1326 L

Explanation

Given:

2C8H18(I) + 25 O2 (g) = 16 CO2(g) + 18 H2O (g)

moles of gasoline = 4.00 mol

Pressure = 0.953 atm

Temperature = 35 C = 308 K

Required: volume of oxygen

Solution

Step 1: use stoichiometry to find the moles of oxygen

The molar ratio between gasoline and O2 is 2:25

Therefore the moles of o2 = 4.0 mol x (25/2) = 50.0 mol

Step 2: Calculate the volume using ideal gas law

PV = nRT

V = nRT/P

V = (50.0 x 0,08206 x 308)/0.953

V = 1326 L