How much energy (in mev) would be required to completely dissociate the u-235 nucleus into its component protons and neutrons?

the answer is:

40 g/mole

Answer:3

Explanation:

The correct order of decreasing acidity for the given compounds is option F, which is 3142.  Acidity of a compound is determined by the strength of its conjugate base.

The stronger the conjugate base, the weaker the acid. In this case, all the given compounds have a carboxylic acid functional group, which is a strong acid. However, the strength of the acid is affected by the electronegativity of the substituents on the carbon atom. The more electronegative the substituent, the stronger the acid.

Therefore, CF3COOH (compound 3) is the strongest acid due to the presence of the highly electronegative CF3 group. CH3COOH (compound 1) is the next strongest acid due to the presence of the moderately electronegative CH3 group. CCI3COOH (compound 4) is weaker than CH3COOH due to the presence of the highly electronegative CCI3 group. Finally, CH3CH2OH (compound 2) is the weakest acid as it does not have any electronegative substituents.

Thus, the correct order of decreasing acidity is 3142 (option F).

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The balanced equation is:

This is a single replacement reaction (S.R.) because one element (in this case iron) is substituted for another element (in this case carbon) in the compound.

The starting materials are 1 pure element (C) and a compound (Fe2O3), and after the reaction the pure element changes (Fe) and also the compound (CO2).

Answer:C - 3.115 g

Explanation:Correct

Answer:

Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells. The cell wall is a rigid covering that protects the cell, provides structural support, and gives shape to the cell.

Explanation:

MOST BRAINLIEST

The type of mixture whose components are evenly distributed throughout is a homogeneous mixture.

A homogeneous mixture is a mixture in which the components are uniformly distributed throughout. The mixture appears to be the same throughout, and it has the same physical and chemical properties throughout. The composition of the components of a homogeneous mixture is uniform. An example of a homogeneous mixture is a solution of sugar and water. Sugar dissolves in water to form a homogeneous mixture. Another example is salt and water. Salt dissolves in water to form a homogeneous mixture.

However, These are the kinds of combinations where the ingredients are evenly dispersed throughout. In other words, "they are consistent throughout. In a homogenous mixture, we can only see one phase of the substance and components are evenly distributed throughout .

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If 0.50 liter of a 2.0 m hcl is diluted with h2o to a volume of 1.0 liter. The molarity of the new solution is 2.0M.

The molarity of the new solution can be calculated by using the following equation:

M1V1 = M2V2, where M1 is the initial molarity, V1 is the initial volume, M2 is the new molarity, and V2 is the new volume. In this case, M1 is 2.0M, V1 is 0.50L, V2 is 1.0L.

Plugging these values into the equation we get:

2.0M x 0.50L = M2 x 1.0L, which simplifies to M2 = 2.0M.

Molarity (M) is a unit of concentration used in chemistry that expresses the number of moles of solute in one liter of solution. Mathematically, it is defined as:

Molarity (M) = moles of solute / liters of solution

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Answer:

it's volume also decrease

Answer:

no because some physical changes produce color changes

To solve this we must be knowing each and every concept related to mole and  and its calculations. Therefore, 388.15g  is the mass of 3.5 moles of CaCl\(_2\).

A mole is merely a measuring unit. In reality, it is one of International System of Units' seven foundation units (SI). When basically determines are insufficient, new units are created.

Chemical reactions frequently occur at levels that use grams would be inappropriate, but using actual figures of atoms/molecules/ions would also be misleading.

It's much easier to write' mole' than '6.02x10²³' whenever you wish to refer to a huge number of things. That is essentially why and how this particular component was created.

mole =given mass ÷ molar mass

moles of CaCl\(_2\) = 3.5 moles

Molar mass of CaCl\(_2\) =110.9g/mol

mass of  CaCl\(_2\) =3.5 moles × 110.9g/mol

                        =388.15g

Therefore, 388.15g  is the mass of 3.5 moles of CaCl\(_2\).

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Answer:

Carboxylic acid group

Explanation:

Carboxylic acid and amine groups form the basis of an amino acid.  One group reacts with the other group on a neighboring amino acid to form the peptide bond, with the release of a water molecule.

2 moles of solute dissolved in 1 liter of solution has the greatest concentration.

Concentration refers to the quantity of solute that is dissolved in a specific amount of solution, and it is commonly measured in units such as moles per liter or grams per liter.

To determine which solution has the greatest concentration, we need to calculate the number of moles of solute present in each solution and then compare the values.

a. Concentration = 2 moles / 1 liter = 2 M

b. Concentration = 0.3 moles / 0.6 liters = 0.5 M

c. Concentration = 2 moles / 10 liters = 0.2 M

d. Concentration = 0.1 moles / 0.5 liters = 0.2 M

Comparing the concentrations, we see that solution (a) has the greatest concentration of 2 M, while the other solutions have concentrations of 0.5 M or lower.

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By using water as a blank, we can measure the absorbance of pure water and subtract it from our sample measurements.

It is important to use water as a blank when setting 100%t because water is a universal solvent, meaning it can dissolve a variety of substances.

By using water as a blank, we can measure the absorbance of pure water and subtract it from our sample measurements.

This ensures that any absorbance readings we obtain are only due to the substance we are testing for and not any impurities in the solvent.

Using a blank is essential in accurately measuring the absorbance of a sample, which is necessary for many scientific applications such as determining the concentration of a solution.

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FCC unit cell consist of O,0,0,0,+1,0 atom.

What is atom?
Each atom is made up of a nucleus one and or more electrons that are bound to it. One or even more protons and a significant number of neutrons make up the nucleus. Only the most prevalent type of hydrogen is neutron-free. Atoms that are neutral or ionised make up every solid, liquid, gas, as well as form of plasma. Atoms are incredibly tiny, measuring typically 100 picometers across. Due to quantum effects, they are so small that it is impossible to predict their behaviour with sufficient accuracy using classical physics, as would be the case, for example, if they were tennis balls.

FCC stand as a face centred cubic unit cell structure
Consists of atom arrange in a cube where is corner of the cube has a friction of an atom with 6 additional fool at terms situated at the middle of every cube.

cube has 8 corners and 6 faces
Each atom at the corner contributes 1/8 of itself to a particular cubic crystal lattice.
A 8 atoms × 1/8 = 1 Atom ( at corners)
Each atom at a face centre contributes 1/2 of itself to a particular cubic crystal lattice.
6 atom × 1/2 = 3 atoms
Total atoms in a fcc lattice is 4 atoms.

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Answer:

11.9

Explanation:

ph=poh-14 and vice versa. Always subtract by 14

Answer:

igneous rock

Explanation:

Answer:

the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.

Explanation:

if you need a definition of a word, you can look in a dictionary as well for future reference

Answer:

Temperature means the hotness or coldness of anything.

Explanation:

The exact definition is: "The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch."

Answer:

Star is a cycles two

Sana maka tolong

One example of a naturally occurring radioactive isotope is uranium-238 (U-238).

Uranium-238 (U-238) is a radioactive isotope that exists in nature. Its half-life is approximately 4.5 billion years. U-238 undergoes a decay process called alpha decay, where it emits an alpha particle consisting of two protons and two neutrons. The daughter product of U-238 decay is thorium-234 (Th-234), which is also radioactive with a half-life of about 24 days. Th-234 further decays into protactinium-234 (Pa-234) through beta decay.

The decay chain continues until it reaches a stable isotope, lead-206 (Pb-206). The daughter products of U-238 decay are unstable and undergo further radioactive decay until a stable isotope is reached.

Source: "Uranium-238." Los Alamos National Laboratory, https://periodic.lanl.gov/92.shtml

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Answer:

epithelial tissue, connective tissue, muscle tissue, and nervous tissue.

I think its right

brainiest pls

Explanation:

The smallest number of distillations you need to perform to achieve at least 90% compound a in your distillate is 3.

Draw a perpendicular line from 60% mol B on x axis. Note the factor in which this line intersects the decrease curve. Now from this draw line parallel to x axis and observe factor in which this line intersects the higher curve. Now from this factor draw a line parallel to y axis and observe the factor in which this line intersects the decrease curve. Now repeat the system till you attain 10 mol% B this is not anything however ninety mol% A.

The  smallest number of distillations you need to perform to achieve at least 90% compound a in your distillate is 3.

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Answer:

21

Explanation:

The exponents w, x, y, and z represent the stoichiometric coefficients of the respective reactants in the balanced chemical equation. K-eq is the equilibrium constant, which is a measure of the ratio of product concentrations to reactant concentrations at equilibrium.

In the equation, the concentrations of the reactants are represented by the square brackets [ ].

\(K_(eq)\) = \([W]^w\) × \([X]^x\) / \(([Y]^y\) ×\([Z]^z)\)

[W], [X], [Y], and [Z] represent the concentrations of the reactants W, X, Y, and Z, respectively. The exponents w, x, y, and z represent the stoichiometric coefficients of the respective reactants in the balanced chemical equation.

\(K_{eq}\) is the equilibrium constant, which is a measure of the ratio of product concentrations to reactant concentrations at equilibrium. The concentrations of the reactants and products are raised to the power of their respective stoichiometric coefficients in the balanced chemical equation.

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Answer:

To protect people and the environment.

Explanation:

In an ecosystem, the  goal of all environmental regulations is to protect people and the environment.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer: 1265.6037

Explanation:

Answer:

\(\boxed {\boxed {\sf About \ 72 \ grams }}\)

Explanation:

To convert from moles to grams, we must use the molar mass (also known as the gram formula mass).

First, look up the molar masses of the elements in the formula.

Next, multiply by the subscript, because it tells us the number of atoms of each element in the formula.

Add the values.

Use this molar mass as a ratio.

\(\frac {180.159 \ g \ C_9H_8O_4}{1 \ mol \ C_9H_8O_4}\)

Multiply by the given number of moles, 0.40

\(0.40 \ mol \ C_9H_8O_4 *\frac {180.159 \ g \ C_9H_8O_4}{1 \ mol \ C_9H_8O_4}\)

The units moles of aspirin cancel.

\(0.40 *\frac {180.159 \ g \ C_9H_8O_4}{1 }\)

\(72.0636 \ g \ C_9H_8O_4\)

The original number of moles has 2 sig figs (4 and 0), so answer must have the same. For the number we calculated, it is the ones place. The 0 in the tenth place tells us to leave the 2.

\(72 \ g\)

According to equation 1, magnesium reacts with hydrochloric acid to create hydrogen gas. When the acid and magnesium react, hydrogen gas is produced. This gas is captured by water displacement, and its volume is measured.

The chemical equation below describes how magnesium metal (Mg) and hydrochloric acid (HCl) react to generate magnesium chloride (MgCl2) and hydrogen gas (H2). Mg (s) + 2 HCl (aq) MgCl2 (aq) + H2 (g)

An aqueous solution of hydrogen chloride is what is known as hydrochloric acid, commonly referred to as muriatic acid. It has an unmistakably strong odor and is colorless. It is categorized as a powerful acid. In the digestive tracts of the majority of animal species, including humans, it is a part of the stomach acid.

Since HCl typically has a pH of 3, it is considered a strong acid. Because it entirely dissociates into H+ and Cl- ions in an aqueous solution, it is a strong acid.

When hydrogen chloride is present in the air in large proportions, breathing can be dangerously difficult and even deadly. Chemical burns from hydrochloric acid can be extremely painful if they come into contact with skin or other tissues.

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It is hypothesized that as the temperature of the air inside the plastic bottle decreases, the volume of the air will decrease as well, in accordance with Charles's Law and the contraction of the plastic bottle.

Hypothesis:

Based on the ideal gas law and the behavior of gases, it is hypothesized that when the temperature of the air inside a plastic bottle is decreased, the volume of the air will decrease as well. This hypothesis is rooted in the understanding that gases tend to contract and occupy less space when their temperature decreases.

According to Charles's Law, which states that the volume of a gas is directly proportional to its temperature when pressure is held constant, it is expected that as the temperature of the air in the plastic bottle decreases, the gas molecules will lose kinetic energy, resulting in a decrease in their average speed. This decrease in speed will lead to a decrease in collisions between the gas molecules and the walls of the container, causing the air to occupy less volume.

Furthermore, since the air is trapped inside a plastic bottle, the decrease in temperature is expected to cause the plastic to contract slightly, exerting additional external pressure on the gas molecules and further reducing the volume they occupy.

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