what occurs when the extinguishing agent reacts with the cooking oil to form a soapy foam blanket that provides separation between oxygen and fuel?

Answer:

0.015 M

Explanation:

Therefore, the concentration of AlCl3 A l C l 3 comes out to be 0.015 M.

The  work (in joule)  performed on the surrounding  when 1 mole of an ideal gas expanded from a volume of 1. 00 liter to a volume of 8. 93 liter against a constant external pressure of 1. 00 atm is 803 joules

we know that,

n = 1 mole

Vi = 1 L

Vf = 8.93 L

P = 1 atm

the work performed on the surrounding under constant pressure is given as can be calculated as below:

W = P∆V

W = P(Vf—Vi)

W = 1 atm × (8.93—1) L

W = 1 atm × 7.93 L

W = 8.93 Litre•atm

Given that,

1 Litre•atm = 101.3J

So,

W = 7.93 Litre•atm × 101.3J/Litre•atm

W = 803.309 J

W ≈ 803 J

Then the work done on the surrounding is approximately

803 joules

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work done on the ship if it moves 2000m is 15×[tex]10^{6}[/tex]J

When an external pulling force is applied to an object, the object moves from one place to another or we can simply say that it changes its position. The amount of work required to move the object from its initial position to the final position is directly proportional to the force applied to the object.

Work done depends on two main components that is force and displacement of an object. The displacement of an object must happen along the line of action of the force in order for the force to do work on the object.

Work has units of energy because it is defined as an amount of (transferred) energy, so work usually has units of J (joules).

To calculate work the formula that we use is;

W = F × d, where W = work done, F = Force  and d = distance

W = 7500N × 2000m

W =  15×[tex]10^{6}[/tex]J

Therefore 15×[tex]10^{6}[/tex]J of work is done on the ship.

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According to the given information As velocity increases kinetic energy and potential energy.

Kinetic energy, which may be seen in the motion of an object, atom, or group of particles, is the electricity of motion. Every moving item uses kinetic energy, such as a person walking, a baseball being tossed, a piece of food falling from the a table, or a charge particle in an electromagnetic current.

When potential heat is produced, among other catalysts such as elastic forces or gravity, kinetic is generated. Motion is created by kinetic energy. The velocity of an object increases as force applied to it and it accelerates.

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The complete question is -

As velocity____kinetic energy and potential energy

Answer:

hydrogen

Explanation:

The activation energy of a reaction is the difference between the peak of the reaction profile and the energy of the reactants.

The change in energy that occurs during a chemical reaction can be plotted on a graph called a potential energy graph or sometimes a reaction progress curve. A potential energy diagram shows the change in the potential energy of a system as reactants are converted to products.

When a catalyst is added it provides the reactants with an alternative route to product formation by lowering the activation energy. Therefore, products are formed with lower activation energies. However, this does not affect the product's energy. This is seen in the diagram of the exothermic reaction below. By determining the rate constant k at various temperatures and applying the Arrhenius equation.

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After the precipitation reaction is finished, the concentration of the excess metal ion is 0.1045 M of a 25 ml sample of 0.25 m potassium carbonate solution is added to a 30 ml of a 0.4 m barium nitrate solution.

We must ascertain the amount of surplus metal ions present once the precipitation reaction is finished, according to the concentration.

The balanced chemical equation for the reaction will be written first.

K2CO3 + Ba(NO3) is the reaction's balanced concentration.

2 BaCO3 plus 2KNO3

Accordingly, 1 mole of potassium carbonate is necessary for 1 mole of Ba(NO3) to totally react.

We will now calculate how many moles of each reactant are present.

Volume = 25.0 mL for potassium carbonate equals 0.025 L.

Concentration equals 0.25 M.

Utilizing the equation

Concentration times volume times number of moles There are 0.25 0.025 moles of K2CO3 in total.

There are 0.00625 moles of K2CO3 in total.

Volume for Ba(NO3)2 is 30.0 mL, or 0.03 L.

Concentration:0.40 M There are currently 0.40 0.03 moles of Ba(NO3)2.

After the precipitation reaction is finished, the concentration of the excess metal ion is 0.1045 M

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The pressure (in atmospheres) of the gas inside the container connected to an open-end, mercury-filled manometer is 1.19 atm

The pressure of a gas inside a container connected to an open-end manometer is given as:

Pressure of gas = Atmospheric presure + pressure due to height

Now, we shall determine the pressure of the gas as illustrated below:

Pressure of gas = Atmospheric presure + pressure due to height

Pressure of gas = 0.95 + 0.24

Pressure of gas = 1.19 atm

Thus, the pressure of the gas is 1.19 atm

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Complete question:

Please attached photo

Answer: Molecules are not attracted

Explanation:

Answer:

The bonds must be non-polar.

Explanation:

The water molecules are polar, so they wouldn't be attracted to the surface. This means the water would bead up and curve away from the surface it landed on.

When water beads up, this happens because the water molecules are more strongly attracted to each other by the polar bonds than they are to the surface by non-polar interactions.

To summarize:

On a nonpolar layer, water beads up because the attraction to each other is stronger than the surface.

Hope this explained it well.

The mass of sodium hydroxide pellets required to prepare 250.0 ml of a 0.10 m sodium hydroxide solution will be 1g.

The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another name for molarity.

We divide the number of moles of solute by the total volume of liters of the solution to determine the molarity of a solution.

M = number of moles of solute   × 1000

          the volume of solution (mL)

Given, M = 0.10M

           V = 250mL

The molar mass of sodium hydroxide = 40g

0.10 = [tex]x[/tex]/40  × 1000

           250

[tex]x[/tex] = 1 g.

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CaF₂ (s) ⇄Ca (aq) + 2F (aq)

KP = [Ca²⁺][F]²

Use the stoichiometry of the reaction to prepare an ICE table showing the initial concentration of the common ion.

CaF2 (s) ⇄ Ca (aq) + 2F (aq)

initial           0            0.010

change      +S              +S

equili          S             0.010+S

Kp = [Ca²⁺][F]²

= (S)(0.010+S)²

= S(0.010)²

S= KP/(0.010)²

= 4.0×10⁻¹¹/1x104

= 4×10⁻⁷ M

A saturated solution is a solution in which as many solutes as possible are dissolved. At a certain temperature, solutes can no longer dissolve in saturated solutions. A saturated solution can be made by dissolving more solutes until no more solutes are dissolved. If adding more solute does not dissolve it, the original solution is saturated. If the added solute dissolves, the original solution was unsaturated.

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3.193 moles of H2SO4 are contained in 400 ml of this solution

Molarity (M) is actually the amount of a substance that is present in certain volume of solution. Molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the molar concentration of the solution.

Number of moles of a solution is nothing but the given mass divided by the molecular mass. Considering this the number of moles of H2SO4 can be;

Consider 100 grams of solution contains 75 grams of solution, so

Number of moles of H2SO4 = 75  = 0.765

                                                 98

Volume of solution = 400

                                  1.67

So molarity = 0.765 × 1.67 × 1000 = 3.193M

                                    400

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Answer:

ldk

Explanation:

ldk

The Sulphur and nitrogen oxides attain the higher environment and blend with water forming nitric acid and sulphuric acid after which come down at the floor of the earth with precipitation. This is known as acid rain.

The white marble of Taj Mahal in Agra consists of Calcium. Whenever there may be acid rain in Agra, the nitric acid and sulphuric acid come at the side of precipitates.

These acids react with calcium carbonate of marble to shape calcium sulphate and calcium nitrate at the side of carbon dioxide and water. Marble consists of carbonate minerals, usually calcite and dolomite. Barium isn't always found in marbles which shape the Taj Mahal. So, the alternatives containing barium are removed.

The acid rain has a pH of much less than 5.6. It has unfavorable consequences at the animal skin, marbles and agriculture etc.

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Lower explosive elements should go on the left side of the periodic table, while high explosive elements go on the right.

The arrangement of the elements is why it is known as the periodic table. You'll see that they are arranged in rows and columns. Periods and Groups are the names given to the horizontal rows that go from left to right and up to down, respectively.

The periodic table will be arranged in the same way as the modern periodic table, starting with the least explosive elements at the bottom and moving up to the most explosive ones on the right. Elements with lower atomic numbers will be on the left side of the periodic table, and those with higher atomic numbers will be on the right side.

All known elements are grouped together in the periodic table of elements into groups with related properties.

As a result, the periodic table is arranged with lesser explosive elements on the left and high explosive elements on the right.

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344 moles of Kr are in a 2.93 l sample at the same temperature and pressure.

According to Avogadro's law, equal volumes of various gases each contain an equal number of molecules at the same temperature and pressure. Under the presumption of an ideal gas, this empirical relation can be deduced from the kinetic theory of gases. For actual gases, the law is roughly applicable when temperatures and pressures are both low enough.

The concept was first proposed in 1811 by Amedeo Avogadro, a longtime professor of higher physics at the University of Turin, but it wasn't until Stanislao Cannizzaro built a rational system of chemistry on its foundation in 1858 that it received widespread acceptance.

At constant temperature and pressure volume is proportional to number of moles,

3.48 mol / 409 ml = 2.93 mols / x m

x = 344 mls

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Methane is combustible and utilized as fuel all around the world. It is a key element in natural gas. Dioxide & water vapor are produced when methane is burned in the oxygen-rich atmosphere.

The energy-producing process that powers the metabolic functions of most living organisms, respiration, depends heavily on oxygen. All living things, including humans, depend on the air that we breathe to survive.

The non-metallic element oxygen occurs naturally as a compound. Two molecules of oxygen that are tightly bound together make up each molecule. Oxygen is in a gaseous state at ambient temperature due to its low melt and boil temperatures.

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The volume in liters of a 1.29 mol/ L iron(ii) bromide solution that contains 0.275 moles of iron(ii) bromide  is 213 mL.

given that :

molarity of iron(ii) bromide solution = 1.29 mol/L

moles of iron(ii) bromide in solution = 0.275 mol

the molarity expression is as follows :

molarity = moles / volume in L

volume in L = moles / molarity

                   = 0.275 / 1.29

                   = 0.213 mL = 213 mL

the volume of iron(ii) bromide solution is 213 mL.

Thus,  The volume in liters of a 1.29 mol/ L iron(ii) bromide solution that contains 0.275 moles of iron(ii) bromide  is 213 mL.

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Balanced equation for the neutralization reaction between H₂SO₄ and KOH in an aqueous solution will be:

H₂SO₄ + 2KOH   K₂SO₄ + 2H₂O

Sulphuric acid reacts with potassium hydroxide, to produce potassium sulfate and water. It is an acid-base reaction in which an acid (H₂SO₄) reacts with a base (KOH) to produce a salt (K₂SO₄) and water.

Balance the chemical reaction:

To balance the chemical equation first write down the reaction which is;

H₂SO₄ + KOH →  K₂SO₄ + H₂O

    Total number of hydrogen on reactants side = 3

    Total number of hydrogen on product side = 2

    Total number of oxygen on reactants side = 5

    Total number of oxygen on product side = 5

    Total number of potassium on reactants side = 1

    Total number of potassium on reactants side = 2

    Total number of sulfur on reactants side = 1

    Total number of sulfur on product side = 1

As you can see the number of hydrogen and potassium are not the same in the equation, so to balance this we add 2 with KOH and H₂O

Balanced equation

H₂SO₄ + 2KOH →  K₂SO₄ + 2H₂O

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2 1/3 fluid ounce of water is still remains in the beaker.

A fluid ounce is a unit of measurement for liquid volume. Commonly abbreviated fl. Oz. (or fl oz) means a single fluid ounce, or more commonly multiple fluid ounces. An ounce is a unit used to measure weight.

For the given case.

Amount of water in the beaker =  5 2/3 fluid ounces

Amount of water poured out =  3 1/3 fluid ounces

Remaining amount of water =   5 2/3 -  3 1/3

= 17/3 - 10/3                   [mixed fractions converted into improper fractions]

= 7/3

= 2 1/3 fluid ounce        [improper fraction converted into mixed fraction]

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Since the given question is incomplete, the complete question is as follows:

"Shelly has a beaker with 5 2/3 fluid ounces of water. She pours out 3 1/3 fluid ounces of water. Which expression can be used to find the number of fluid ounces of water that remain in the beaker?"

The absorbance of the solution containing FeSCN2 can be used to calculate the [FeSCN2] at equilibrium by using the following equation:

A = ε * b * [FeSCN2]

Where A is the absorbance of the solution, ε is the molar absorptivity of FeSCN2, b is the path length of the cuvette, and [FeSCN2] is the molar concentration of FeSCN2.

What is the purpose of iron III thiocyanate?

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The RNA molecule resembles an ATP molecule structurally, according to the claim made.

Single, neutral particles make up an atom. As neutral objects consisting with more than two atoms joined together, molecules are. A positively charged or negatively charged molecule is called an ion.

The nucleus of the atom of gold has 79 protons. The number of electrons and protons in every neutral (charge-free) atom is the same. Although neutrons vary, they are often equal to or 1.5 times as numerous as protons (in smaller atoms) (larger atoms).

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The molar solubility of salt is 6.542 x 10⁻⁵ mol/L

It is the number of moles of solute in a saturated solution that is one litre in size. It is expressed in moles per litre.A compound's capacity to dissolve in a given substance is known as its molar solubility (M), which is a unit of measurement. Molar solubility is measured as moles/L and is more specifically the maximum number of moles of a solute that can dissolve in one litre of solvent. The solution is said to be saturated when the amount of solute it can dissolve in one litre of solvent equals the amount of moles dissolved in one mole of solvent.

There are several factors that affect M's value. The Ksp value of the solubility product constant is significant. Each compound's measure of how readily a substance dissolves has a fixed value. Calculating the value of M also requires knowledge of the chemical reaction's product-to-reactant ratio. The reaction's stoichiometry is what is meant by this

Co(OH)₂ dissociates in solution according to the equation:

Ag₂CrO₄ → 2Ag⁺ + CrO₄²⁻.

∵ Ksp = [Ag⁺]²[CrO₄²⁻] = (2s)²(s) = 4s³.

∴ 4s³ = 1.12 x 10⁻¹².

∴ s³ = 1.12 x 10⁻¹²/4 = 2.80 x 10⁻¹³.

∴ s = ∛(2.80 x 10⁻¹³) = 6.542 x 10⁻⁵ mol/L

Thus the molar solubility of salt is 6.542 x 10⁻⁵ mol/L

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The n = 5 to n = 3 transition in the bohr hydrogen atom corresponds to the emission of a photon with a wavelength of 1280 nm.

Because it does not account for forces owing to inter-electronic attractions, Bohr's atomic model is only valid for single electron species.

The Bohr Model of the Hydrogen Atom presented the planetary model initially, but an assumption about electrons was subsequently established. The premise was that the structure of atoms could be quantized. Bohr hypothesised that electrons orbited the nucleus in fixed-radius orbits or shells.

Electrons orbit the nucleus in fixed-size, fixed-energy orbits. The orbit's energy is proportional to its size. The smallest orbit has the lowest energy. When an electron travels from one orbit to another, it absorbs or emits radiation.

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For the 1,3-cyclohexanes, the most stable conformation of the cis isomer has both methyl groups in equatorial positions. As you know, the geometry of sp³ hybridized carbon is tetrahedral. With cyclohexane, the whole molecule is not as flat as I often sketch in my notebook. Therefore, cyclohexane adopts two conformations. Boat form and chair form. The boat structure is less frequently seen due to its slightly greater steric hindrance, while the chair structure is preferred as it is very stable.

The figure below shows the chair conformation of cis-1 3-dimethylcyclohexane. Also, cis-1,3-dimethylcyclohexane exists in two chair forms. This is because the conformation continuously changes shape and is also called a compound in a dynamic state. The conformation is also temperature dependent. Therefore, cyclohexane shows different peaks in H NMR at low temperature and room temperature.

A closer look at cyclohexane reveals that the 12 substituents are not the same. However, six substituents occupy axial positions and the remaining six occupy equatorial positions.

The figure below shows the dynamic equilibrium conformation of cis-1 3-dimethylcyclohexane.

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In the nuclear equation, 222 86 radon becomes 4 2 helium plus blank. The characteristics of the missing particle are Z=84, A=218.

4 2 helium is also known as alpha(α) particle. Helium atom contains 2 protons and 2 neutrons in it. During the α-decay, atom transforms into the another atom with atomic number less than 2 and a mass number less than 4. The sum of the subscripts on both side of the equation should be same. Therefore, the α-decay of radon is shown as

222 86 Ra→218 84 Z+4 2 He

Therefore, element which shows atomic number 84 is polonium(Po).

Hence, the characteristics of the missing particles are Z=84, A=218. Therefore, third option is correct.

Your question is incomplete but the complete question is

222 86 Radon becomes 4 2 Helium plus blank. The characteristics of the missing particle are

Z = 84, A = 220

Z = 88, A = 218

Z = 84, A = 218

Z = 85, A = 220

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Enolate production, a nucleophilic compound that interacts with electrophiles.

A nucleophile is a chemical entity in chemistry that establishes bonds by giving up a pair of electrons. Nucleophiles include all ions and molecules with a free pair of electrons or at least one pi bond. Lewis bases are nucleophiles because they donate electrons.

As a nucleophile, the hydroxide ion contributes two electrons to an electrophilic atom, in this case the carbon atom, to create a new covalent bond. A hydroxide ion is said to be behaving as a "base" when it transfers a pair of electrons to a (acidic) proton to create a new covalent bond, as we've seen before.

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Answer:

Homeostasis is generally maintained by a negative feedback loop that includes a stimulus , sensor , control centre , and effector . Negative feedback serves to reduce an excessive response and to keep a variable within the normal range. Negative feedback loops control body temperature and the blood glucose level.

We know that the concentration of oxygen in the graduated cylinder must be greater than the concentration of oxygen gas in the rest of the classroom.

A Measuring Cylinder, also known as a graded cylinder, cylinder measuring cylinder, or mixing cylinder, is a piece of laboratory equipment used to measure the amount of liquids, chemicals, or solutions throughout the course of a typical lab session. Graduated cylinders offer greater precision and accuracy than standard laboratory flasks and beakers.

Graduated cylinders and beakers are examples of glassware used in laboratories that has a specialized use. The volumes of the liquid inside may usually be read more precisely with graduated cylinders. For blending and stirring liquids, beakers work well.

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The HCl concentration formed is 17.6 g and the limiting reactant is hydrogen.

In this case, based on the information provided, the grams of HCl required can be calculated by first identifying the limiting reactants in moles of each reactant.

1:1 mole ratio

nH₂ = 0.490 g H₂ x 1 mol H₂ / 2.02 g H₂ = 0.242 mol H₂

nCl₂ = 50.0 gCl₂ x 1 mol Cl₂ / 70.9 g Cl₂ = 0.705 mol Cl₂

From this we conclude that hydrogen is the limiting reactant and use 1:2 molar ratio with HCl having a molar mass of 36.46 g/mol:

mHCl = 0.242 mol H2; x 2 mol HCI/1 mol H2. x 36.6 g HCl/1 mole HCl

mHCl = 17.6 g HCl

Therefore, the HCl concentration formed is 17.6 g and the limiting reactant is hydrogen.

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