What is the mass of an airplane that is flying at 246 m/s and has a momentum of 19,680,000 kg•m/s?

Chloroacetic acid is a weak acid, which means it partially dissociates in water. The equilibrium equation for the dissociation of chloroacetic acid is:

ClCH2COOH + H2O ⇌ ClCH2COO- + H3O+

The acid dissociation constant, Ka, is defined as:

Ka = [ClCH2COO-][H3O+] / [ClCH2COOH]

To find the value of Ka, we need to use the given pH value to calculate the concentration of H3O+ in the solution.

pH = -log[H3O+]

1.86 = -log[H3O+]

[H3O+] = 1.3 × 10^-2 M

Since chloroacetic acid is a weak acid, we can assume that the concentration of H3O+ formed from the dissociation of the acid is negligible compared to the initial concentration of the acid. Thus, we can assume that [H3O+] ≈ 0.

Using the concentration of the acid and the concentration of the conjugate base (ClCH2COO-), we can solve for Ka:

Ka = [ClCH2COO-][H3O+] / [ClCH2COOH]

Ka = (x)(1.3 × 10^-2) / (0.15 - x)

where x is the concentration of ClCH2COO- at equilibrium.

Using the quadratic formula, we find that x = 7.0 × 10^-3 M.

Substituting this value into the equilibrium expression for Ka, we get:

Ka = (7.0 × 10^-3)(1.3 × 10^-2) / (0.15 - 7.0 × 10^-3)

Ka = 0.72

Therefore, the value of Ka for chloroacetic acid is 0.72. The correct answer is (a).

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The empirical formula of the compound is CH₃N

Mass of C = (12 / 44) × 53

Mass of C = 14.45 mg

Mass of H = (2 / 18) × 32.6

Mass of H = 3.62 mg

Mass of N = (mass of compound) – (mass of C + mass of H)

Mass of N = 35 – (14.45 + 3.62)

Mass of N = 16.93 mg

Divide by their molar mass

C = 14.45 / 12 = 1.204

H = 3.62 / 1 = 3.62

N = 16.93 / 14 = 1.209

Divide by the smallest

C = 1.204 / 1.204 = 1

H = 3.62 / 1.204 = 3

N = 1.209 / 1.204 = 1

Thus, the empirical formula of the compound is CH₃N

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The unbalanced chemical equation is:  Na + H₂O → NaOH + H₂

The unbalanced chemical equation in words: One mole of sodium atom reacts with one mole of water to form one mole of sodium hydroxide and one mole of hydrogen gas.

The number of atoms on the reactant side is: 1 Na, 2 H, and 1 O

The number of atoms on the product side is: 1 Na, 3 H, and 1 O

Chemical equations are equations that use the symbols of the elements to represent the chemical reaction that occurs between elements or compounds called reactants to form products.

A chemical equation may be balanced or unbalanced.

A chemical equation is unbalanced when the number of moles of atoms of each element reacting is not equal on both sides of the reaction.

A chemical equation is balanced when the number of moles of atoms of each element reacting is equal on both sides of the reaction.

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The main idea of the excerpt chemistry in centuries is all the matter present are composed of the atoms.

Aristotle declared that only four element exist in nature. They are -

Air, water, earth, fire.

He stated that all matter are composed of these four elements only.

When the atoms reacts, they form a chemical bond. It is defined as a force of attraction which holds the atoms together to form a compound.

Force of attraction is defined as a type of force which keeps two or more objects close to each other, or together no matter how far or close they are in distance.

Two major categories of forces of attraction are - intramolecular forces and intermolecular forces. Intramolecular is the type of forces in atoms which are present internally. While intermolecular is the type of force which is present in two or more elements.

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Answer:

I think it is 600/m^3

Explanation:

I'm not sure I think it is since I calculate

Answer:

The answer is "The first choice".

Explanation:

The single moving process is defined as its reaction where very describe events in its chemical process substitutes much fewer activities shall. Able to follow was its chemical formula with a displacement reaction:  

\(\to \bold{B+ XC \longrightarrow BX +C }\)

In this, the element value of A more sensitive than element C.  

Nonmetals are also the components which generate electrodes and achieve a negatively charged named anions.  

As for chemistry response:

\(\to \text{ Non-metal + Ionic compound} \longrightarrow \text{Non-metal + Ionic compound}\)

As there is no metal from either reactant side, ions are therefore unique throughout the chemical process.  

For example, sodium due to temperature's response is accompanied by the following equation:  

It's a correct answer, because "It is a single substitution reaction, and the anions are different in both ion compounds".

Answer:

B

Explanation:

found it from a person wjwjdjjanqnqq

Answer: 4 FeSO4(s) + O2(g) + 10 H2O(l) ---> 4 Fe(OH)3 + 4 H2SO4

Explanation:

FeSO4(s) + O2(g) + H2O(l) = Fe(OH)3 + H2SO4

In other to balance the equation, the total number of atoms of each element on the Left Hand Side (LHS) of the equation must be equal to the total number of atoms on the  Right Hand Side (RHS) of the equation.

Add the following coefficients to the equation;

FeSO4 = Add 4,  H20 = Add 10,  Fe (OH)3 = Add 4 and H2SO4 = Add 4

By doing this, you will discover that the total number of atoms on bothe sides of the equation are balanced; thus we have;

4 FeSO4(s) + O2(g) + 10 H2O(l) ---> 4 Fe(OH)3 + 4 H2SO4

Depolarization refers to a neuron that is conducting an impulse.

Excitable cells are those that react to electrical signals; cell depolarization, or membrane depolarization, is a process that modifies the electrical charge distribution so that the cell is less negatively charged than the environment. Excitation-prone cells include:

Neurons

muscle tissue

In physics, depolarization refers to the removal of polarity. Depolarization, however, has a slightly distinct meaning in physiological systems like cells, where it describes becoming more positively charged than the surrounding air or water.

Excited cells alter their membrane potential using electrochemical gradients, also known as concentration gradients based on ion concentration and electrical potential. The membrane becomes more positive and less negative, depolarizing these cells. Positive charges penetrate the cell during depolarization, reducing its negative charge. The membrane potential decreases as depolarization progresses.

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Facilitated diffusion can be represented by drawing molecules passing through a membrane protein, and to represent active transport you can add an ATP to the same figure.

In facilitate diffusion particles move through the cell membrane due to open proteins, this can be represented by showing a membrane protein that is allowing particles to enter or exit.

Similarly, in active transport molecules move through the cell membrane through a membrane protein, but ATP is required. Therefore, to represent this make sure to add an ATP.

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answer: 275 Joule ...

Answer:

NO is the catalyst; it provides a reaction pathway with a lower activation energy

Explanation:

1. Identify the catalyst

A catalyst is a species that is present at the beginning of a reaction and reappears at the end.

It does not appear in the overall equation.

Let's apply these concepts to your mechanism:

    First:      2NO(g) + O₂(g) ⟶ 2NO₂(g)

Second: 2NO₂(g) +2SO₂(g) ⟶ 2NO(g) + 2SO₃(g)

Overall:          O₂(g) + 2SO₂ ⟶ 2O₂

We see that NO is present at the beginning of the first step. It reacts and then re-forms in the second step. It does not appear in the final equation.

NO is the catalyst.

2. Explain the action of the catalyst

A catalyst acts by providing an alternate pathway with a lower activation energy.

The direct reaction of SO₂ with oxygen to form SO₃ has a high activation energy.

NO reacts with the oxygen to form an intermediate (NO₂) that then reacts with the SO₂ to form SO₃. Both steps have lower activation energies, so the reaction is faster.

Answer:

NO is the catalyst. NO is the catalyst because it increases the rate of the reaction but is not consumed during the reaction. NO increases the rate of the reaction by lowering the activation energy. The reaction of NO with O2 provides an alternative reaction pathway with a lower activation energy.

Explanation: edge 2020

Answer:

1- gram of oxygen, 2- 3.01x1023 atoms of oxygen, 3- 1 molecule of oxygen, 4- 1mole of oxygen, 5- 1atom of oxygen.

Nanoscale zerovalent iron (nZVI) is a material commonly used for environmental remediation and other applications. Two different methods for producing nZVI are bottom-up and top-down.

Bottom-up synthesis involves the assembly of smaller molecules or particles to form larger structures. For nZVI, this can involve the reduction of iron salts or precursors in a solution containing a reducing agent. This method allows for precise control over the size and morphology of the particles, as well as the ability to functionalize the surface for specific applications. Top-down methods involve the breaking down of larger structures into smaller ones. For nZVI, this can involve the mechanical or chemical reduction of bulk iron into smaller particles. This method is less precise in terms of particle size and morphology but can produce larger quantities of material in a shorter amount of time. Both methods have their advantages and disadvantages, and the choice of method will depend on the specific application and requirements.

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Dish of Cabbage, carrot, pea, cauliflower and brinjal are the meals we could enjoy that contain only plant products.

Cabbage, carrot, pea, cauliflower and brinjal are the five different plants based meals. In these meals, vegetables are used which are the parts of plant. We know that vegetables are very healthy and nutritive which can be get from plants.

So we can conclude that dish of Cabbage, carrot, pea, cauliflower and brinjal are the meals we could enjoy that contain only plant products.

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The density of ammonia gas (NH3) at 66°C and 2.3 atm pressure is approximately 2.39 g/L.

To find the density of ammonia gas (NH3) at 66°C and 2.3 atm pressure, we can use the ideal gas law:

PV = nRT

where: P is the pressure (2.3 atm),

V is the volume,

n is the number of moles,

R is the ideal gas constant (0.0821 L·atm/mol·K),

T is the temperature (66°C = 339.15 K).

We can rearrange the equation to solve for the volume:

V = (nRT) / P

To find the density, we need to convert the number of moles to grams and divide by the volume:

Density = (n × molar mass) / V

The molar mass of ammonia (NH3) is:

1 atom of nitrogen (N) = 14.01 g/mol

3 atoms of hydrogen (H) = 3 × 1.01 g/mol

Molar mass of NH3 = 14.01 g/mol + 3 × 1.01 g/mol = 17.03 g/mol

Substituting the values into the equations:

V = (nRT) / P = (1 mol × 0.0821 L·atm/mol·K × 339.15 K) / 2.3 atm ≈ 12.06 L

Density = (n × molar mass) / V = (1 mol × 17.03 g/mol) / 12.06 L ≈ 2.39 g/L

Therefore, the density of ammonia gas (NH3) at 66°C and 2.3 atm pressure is approximately 2.39 g/L.

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If the cells do not multiply by mitosis then the wound will not heal.

There are two kinds of cell division and these are mitosis and meiosis. We have to note that mitosis occurs at the body cells and the exact number of chromosomes in the parent cell is transferred to the daughter cells.

Meiosis occurs in the gamete cells and each of the parent cells would only contribute half of the maximum number of the chromosomes that they contain.

We know that when we have a cut, the cells around the area of the cut would begin to multiply by the process of mitosis helping the wound to heal.

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The gas laws are a set of fundamental principles that describe the behavior of gases under different conditions of pressure, volume, and temperature. We can use the ideal gas law to solve this problem:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the temperature from Celsius to Kelvin by adding 273.15:

T = 0.00 C + 273.15 = 273.15 K

Next, we can plug in the values we have:

P(22.4 L) = (1.00 mol)(0.0821 L·atm/mol·K)(273.15 K)

Simplifying:

P = (1.00 mol)(0.0821 L·atm/mol·K)(273.15 K)/(22.4 L)

P = 1.01 atm

Therefore, the helium will exert a pressure of 1.01 atm on its container.

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The solid with the highest melting point among the given options is C(s, diamond) because it forms covalent bonds with each of its neighboring carbon atoms.

C(s, diamond) has the highest melting point because it consists of a network of carbon atoms bonded together through strong covalent bonds. In a diamond lattice, each carbon atom is bonded to four neighboring carbon atoms in a tetrahedral arrangement. These covalent bonds are very strong and require a significant amount of energy to break, resulting in a high melting point for diamond. The strong covalent bonding throughout the crystal lattice of diamond makes it exceptionally hard and gives it its characteristic properties.

On the other hand, Kr(s) and NaCl(s) are both ionic solids. Ionic compounds like NaCl(s) have a lattice structure in which positively charged ions (cations) and negatively charged ions (anions) are held together by electrostatic forces. Although ionic bonds are strong, they are not as strong as covalent bonds. Therefore, the melting points of ionic solids are generally lower compared to covalent solids like diamond.

H2O(s) is a molecular solid in which water molecules are held together by intermolecular forces such as hydrogen bonding. While hydrogen bonding is relatively strong, it is weaker than covalent bonding. Hence, the melting point of H2O(s) (ice) is lower compared to diamond.

C(s, diamond) has the highest melting point among the given solids because it forms a covalent atomic network with strong bonds between each neighboring carbon atom, resulting in a high resistance to melting.

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The approximate concentration of solutes (also approximated as NaCl) present in blood with an osmotic pressure of 7 atm is 0.12 M.

The osmotic strain is straightforwardly corresponding to the convergence of solutes. Thusly, we can utilize the accompanying relationship to tackle the issue:

π1/π2 = C1/C2

Where π1 and π2 are the osmotic tensions of the two arrangements and C1 and C2 are the centralizations of solutes in the two arrangements.

We should substitute the qualities given in the issue:

28/7 = 0.50/C2

Addressing for C2, we get:

C2 = (0.50 × 7)/28 = 0.12 M

So the estimated convergence of solutes (approximated as NaCl) present in blood is 0.12 M, which compares to choice A (0.12 M) in the given decisions.

It's essential to take note of that this is an estimate, as the solutes present in blood are NaCl as well as incorporate different particles and atoms. Furthermore, the osmotic tension of blood can differ contingent upon various factors, for example, hydration levels, electrolyte equilibrium, and medical issue.

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Answer:

mass of hydrogen peroxide = 31.50% × 500.0 g = 157.5 g

To find the mass of water in the solution, we can subtract the mass of hydrogen peroxide from the total mass of the sample:

mass of water = total mass of sample - mass of hydrogen peroxide

mass of water = 500.0 g - 157.5 g

mass of water = 342.5 g

Therefore, the mass of hydrogen peroxide in the solution is 157.5 g, and the mass of water in the solution is 342.5 g.

Answer:

d

Explanation:

A: mass never increases or decreases. It is a value that is the same everywhere in the universe. A is not correct.

B: it can be but that is not the only unit that can be used

C: A spring scale measures force not mass.

D: The answer to this question is D if the word at the end is balance.

Answer and explanation:

Based on the temperature change, we can conclude that the reaction of baking soda and vinegar is exothermic. In an exothermic reaction, energy is released from the system to the surroundings in the form of heat, which causes an increase in the temperature of the surroundings.

In this case, the system consists of the baking soda and vinegar, which react to form carbon dioxide gas, water, and sodium acetate. As the reaction proceeds, energy is released from the system to the surroundings in the form of heat. This heat causes an increase in the temperature of the surroundings, which in this case is the surrounding air and any objects in the vicinity of the reaction.

The decrease in temperature from 25˚C to 19˚C indicates that the reaction released energy to the surroundings, and this energy was absorbed by the air and objects in the vicinity of the reaction. This is why the temperature of the surroundings decreases.

Overall, an exothermic reaction like this involves the conversion of potential energy stored in the reactants into kinetic energy in the form of heat, which is released to the surroundings.

Answer:69.8

Explanation:

(a) \(C*H_{3}*C*H_{2}*C*H_{2}*COOH\): Class: Carboxylic Acid; IUPAC Name: Pentanoic Acid.

IUPAC stands for International Union of Pure and Applied Chemistry. It is an international scientific organization that sets standards for chemical nomenclature, terminology, measurements, and safety. It works to promote the science of chemistry around the world and provides guidance on topics such as chemical nomenclature, terminology, and measurements, as well as chemical safety.

(b) \(CHCI_2CH_2CH_3\): Class: Halogenated Alkane; IUPAC Name: 1-Chloro-2-methylpropane

(c) \(C*H_{3}*C*H_{2}*COC*H_{3}\): Class: Ketone; IUPAC Name: 3-Methylbutan-2-one

(d) \(C*H_{3}*COOC*H_{3}\): Class: Ester; IUPAC Name: Methyl Propanoate

(e) \(C*H_{3}*C*H_{2}*OC*H_{3}\): Class: Ether; IUPAC Name: Diethyl Methane

(f)\(C*H_{3}*C*H_{2}*C*H_{2}*C*H_{2}*COOC*H_{2}*C*H_{3}\): Class: Carboxylic Acid; IUPAC Name: 2-Methylpentanoic Acid
2. B. CH₃CONH2 is an amine.
3. (a) Hexanoic Acid: CH₃CH₂CH₂CH₂COOH
(b) Butanal: CH₃CH2CHO
(c) Pent-1-ene: CH2=CHCH₂CH₂CH₂CH₃
(d) 1-Bromo-2-methylbutane: CH₃CH₂CHBrCH₃
(e) Ethyl Methanoate: CH₃COOCH₂CH₃
(f) Methoxypropane: CH₃OCH₂CH₂CH₃
(g) But-2-yne: CH3C≡CHCH₂CH₃
4. C. 1-bromopropene.

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