A 0. 1 m acid solution at 298 k would conduct electricity best of the acid had ka value of

Answer:b

Explanation:

The literature provides the viscosity values of 1-pentanol and 1-propanol at 25 degrees Celsius.

To determine the viscosity of 1-pentanol and 1-propanol at 25 degrees Celsius, we can refer to the literature, such as scientific journals, textbooks, or databases that provide data on the physical properties of various substances. These sources often provide tables or graphs that list the viscosity values of different compounds at different temperatures.

By consulting the literature, we can find the specific viscosity values of 1-pentanol and 1-propanol at 25 degrees Celsius. The viscosity is typically expressed in units of centipoise (cP) or millipascal-second (mPa·s). These values represent the resistance of the liquids to flow and give us an indication of their internal friction.

It is important to note that the viscosity of substances can vary depending on factors such as purity, pressure, and the presence of impurities. Therefore, it is essential to refer to reliable and up-to-date literature sources to obtain accurate viscosity values for 1-pentanol and 1-propanol at 25 degrees Celsius.

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The statements that describe how the pond turned into the bog is as follows: Large water plants grew in shallow water around the edge of the pond.

Pond is an inland body of standing water, either natural or man-made, that is smaller than a lake.

A bog is an area of decayed vegetation (particularly sphagnum moss) which forms a wet spongy ground too soft for walking.

This means that a pond can become a bog when existing plants in the pond decays until the land becomes soft.

Therefore, the statements that describe how the pond turned into the bog is as follows: Large water plants grew in shallow water around the edge of the pond.

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8. Definition of reduction and oxidation in redox reactionsIn redox reactions, reduction is defined as the gain of electrons by a molecule, atom, or ion, whereas oxidation is the loss of electrons by a molecule, atom, or ion. It is the combination of these two half-reactions that creates a complete redox reaction. The oxidizing agent (electron acceptor) is reduced by the reducing agent (electron donor), and the reducing agent (electron donor) is oxidized by the oxidizing agent (electron acceptor).

10. Explanation of two functions of membrane proteinsTwo of the functions of membrane proteins are:Cell-to-cell communication: Membrane proteins have signaling functions and are used to transmit signals to the cell's interior for various biological processes such as cellular growth, division, and apoptosis.Transportation: Membrane proteins help to transport molecules across the cell membrane, such as ions, nutrients, and waste products.

11. How the structure of the membrane affects the passage of substances into and out of a cellThe structure of the cell membrane affects the movement of substances in and out of the cell. The phospholipid bilayer of the membrane is selectively permeable, allowing some substances to pass through easily while restricting others. Small, nonpolar molecules can easily diffuse through the membrane, while large or charged molecules require the help of proteins to pass through.

12. The tonicity of a solution has a significant impact on how a human cell behaves. When a cell is placed in an isotonic solution, the amount of water flowing into the cell is balanced by the amount of water flowing out, causing no net movement of water. When a cell is placed in a hypertonic solution, water will move out of the cell, causing it to shrink. When a cell is placed in a hypotonic solution, water will flow into the cell, causing it to swell and potentially burst.

13. Differences between diffusion and osmosis Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. Osmosis, on the other hand, is the movement of water molecules across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration.

14. Differences between primary active transport and secondary active transportPrimary active transport uses ATP to transport ions or molecules against a concentration gradient, while secondary active transport uses the energy created by an electrochemical gradient to transport ions or molecules.

15. RNA processing and its significance in the process of protein synthesisRNA processing is the modification of a pre-mRNA molecule to generate mature mRNA. It involves the removal of introns and splicing together of exons. This edited mRNA then serves as the template for the production of a protein through the process of translation. RNA processing is critical for the correct functioning of proteins because it generates the mature mRNA that codes for the correct sequence of amino acids.

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Because the end result of an acid-base reaction frequently is just a neutralized mixture of a soluble molecule, commonly known as a salt, this reaction is sometimes referred to as a(n) reaction.

substance created when an acid and a base react. The positively ion (cation) of a basic and the anion (weak acid) of an acid make up a salt. The contact between an acidic solution is called a neutralized reaction. Compared to regular table salt, potassium salts possess up to 70percentage points less sodium.

Table salt, also known as sodium chloride (NaCl), is made up of an equal amount of sodium cations and salt anions that are structured in a repeating muti structure, alternating in all three dimensions.

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Answer:

no

Explanation:

it means melting or fusion so yhe answer is no

A substance changes from a solid to a liquid no its is not the formation of new substance. It is the change of state of the matter.

The states of matter can be defined as one of the several configurations in which matter can exist.

There are basically three states of matter.

Thus, a  substance changes from a solid to a liquid no its is not the formation of new substance. It is the change of state of the matter.

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Enthalpy change of mixing refers to the energy change during the formation of an ideal solution. Volume change of mixing relates to the change in volume resulting from the mixing process.

Enthalpy is a thermodynamic property that represents the total heat content of a system at constant pressure. It encompasses both the internal energy of the system and the work done by or on the system. Enthalpy is denoted by the symbol "H" and is typically measured in units of energy, such as joules (J) or calories (cal). Enthalpy accounts for the energy transferred as heat during chemical reactions or phase changes. Enthalpy is crucial in studying and analyzing various phenomena, including chemical reactions, phase transitions, and energy transfers in thermodynamic systems.

Volume change of mixing, on the other hand, relates to the change in volume resulting from the mixing process. It accounts for the variation in molecular interactions and the resulting effects on the overall volume of the mixture compared to the volumes of the individual components.

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Answer:

See explanation

Explanation:

Energy of the photon;

E = hc/λ

h= Planks constant

c= speed of light

λ = wavelength

E= 6.6 × 10^-34 × 3 × 10^8/4 x10 -7

E = 4.95 × 10^-19 J

If 1ev=1.602x10-19 J

x = 4.95 × 10^-19 J

x= 3.1 ev

From Einstein's photoelectric equation;

KE = E - Wo

Where;

KE = kinetic energy of ejected photoelectron

E= energy of the photon

Wo= work function of the metal

KE = 3.1 eV - 2.13 eV

KE= 0.97 eV

KE = 0.97 eV × 1.602x10-19 J

KE = 1.55 × 10^-19 J

KE = 1/2 mv^2

1.55 × 10^-19= 1/2 × 9.1 × 10^-31 × v^2

v= √2 × 1.55 × 10^-19/9.1 × 10^-31

v= 5.8 × 10^5 m/s

Answer:

61,000

Explanation:

The efficiency of the system is 75%, meaning that 75% of the input energy is converted into useful output energy, while the remaining 25% is lost as waste or heat.

The efficiency of a system can be calculated by dividing the useful output energy by the input energy. In this case, the useful output energy is 7,500 kJ and the input energy is 10,000 kJ. To find the efficiency, we divide the useful output energy by the input energy and multiply by 100 to express it as a percentage.

So, the efficiency of the system can be calculated as follows:

Efficiency = (Useful output energy / Input energy) * 100

Efficiency = (7,500 kJ / 10,000 kJ) * 100

Efficiency = 0.75 * 100

Efficiency = 75%

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Answer:

1.72 g/ml

Explanation:

If our aim is to determine the density of the metal ore, then;

Mass of the metal ore= 9.00 g

Volume of the ore= volume of water displaced = 26.47 - 21.25 = 5.22 ml

Density of the ore= 9.00 g/5.22 mk

Density of the ore= 1.72 g/ml

Answer:

Dogs naturally lose old or damaged hair by shedding. Although shedding. and yes

Answer:

The H+ atoms will become neutralized by the OH- ions in the water. This is due to the fact that when acids are dissovled in water, they give H+ ions (Hydrogen ions). When the H+ ions from the acid join with the OH- ions in the base (water), they'll become neutralized and form H₂O (Water molecule).

The molarity of phosphoric acid in a solution labelled 20% of Phosphoric acid by weight and a density of 1.12g/mL is 11.85 mol/L.

What is molarity?

The number of moles of solute divided by the number of liters of solution is the definition of molarity, a concentration unit in chemistry. Molarity is measured in moles per liter (mol/L).

Number of moles of phosphoric acid whose molar mass is 98:

\(Number of moles = \frac{mass}{molar mass}\)

n = 20/98

n = 0.204 mols

\(Volume = \frac{mass}{density }\)

V = 20/1.22

V = 17.85 ml

Molarity is the number of moles of solute per liter of solution.

\(M = \frac{n}{V}\)

Where, M = molarity, V = volume of solvent in liters, n = no. of moles of solute.

So, \(M = \frac{0.204}{17.85} \times \frac{1000}{1}\)

M = 11.85 mol/L

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In a molecule with a linear shape and two electron domains around the central atom, there are no lone pairs of electrons present around the central atom.

A linear molecule has a straight, linear arrangement of atoms, with the central atom being bonded to two other atoms. In this case, the two electron domains correspond to the two bonded pairs of electrons between the central atom and the surrounding atoms.

A linear molecule does not have any lone pairs of electrons because there are no additional electron domains that are not involved in bonding. Lone pairs are typically found in molecules with a non-linear or bent shape, where there are electron domains that are not involved in bonding and exist as lone pairs around the central atom.

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When ions are tightly attached to solvent molecules they are called as solvated ions.

When separation occurs, the solute is divided into ions or molecules, and every ion or molecule is surrounded by a solvent. The bonding between the solute particles and solvent molecules is called solvation. A solvated ion or molecule is surrounded by solvent molecules. For example, when we add NaCl to water, the NaCl molecules split into Na⁺ and Cl⁻ ions. These ions of sodium and chlorine then get surrounded by water molecules. We can call the ion water mixture a solution and the surrounded ions of sodium and chlorine as solvated ions.

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Answer:

Muscovite is the mineral

The fractional yield of fresh water from the process is determined by solving a set of equations. The weight percent of salt in the solution leaving the fourth evaporator can also be determined using these equations.

(a) Flowchart of the process:

In the first evaporator, seawater containing 3.50 wt% salt enters and produces vaporized water with the same salt concentration. The vaporized water is condensed, and the resulting brine, still containing 3.50 wt% salt, is fed to the second evaporator. This process continues until the tenth evaporator, where the brine leaving has a salt concentration of 5.00 wt%. The product stream of fresh water is obtained by condensing and combining the vaporized water from each evaporator.

(b) Set of equations:

To determine the fractional yield of fresh water from the process and the weight percent of salt in the solution leaving the fourth evaporator, the following equations can be solved:

Equation 1: x1 = (1 - 0.035)   [Variable to solve: x1]

Equation 2: x2 = (1 - 0.035) * x1   [Variable to solve: x2]

Equation 3: x3 = (1 - 0.035) * x2   [Variable to solve: x3]

Equation 4: x4 = (1 - 0.035) * x3   [Variable to solve: x4]

Equation 5: x4 = (1 - 0.050) * x10   [Variable to solve: x10]

In these equations, x1, x2, x3, and x4 represent the fractional yield of fresh water from the first, second, third, and fourth evaporators, respectively. x10 represents the fractional yield of fresh water from the tenth evaporator.

(c) Solution:

To solve the equations derived in part (b), we need to find the values of x1, x2, x3, x4, and x10. These values can be obtained by substituting the known values of salt concentrations and solving the equations simultaneously. Once the values are determined, the fractional yield of fresh water from the process and the weight percent of salt in the solution leaving the fourth evaporator can be calculated.

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Answer:

i dont see the model bro

Explanation:

Answer:

The current model of the atom shows an atom that is mostly empty space. In the center is a small nucleus made of protons and neutrons.

Explanation:

Answer:

id.............k

Explanation:

Answer:

119.002 g/mol

Explanation:

---------

Answer: ν= \(6.01 * 10^{20\) hz

Explanation:

speed of light (c) = wavelength * frequency

\(3*10^8 = 499 * 10^{-9} *\) ν

ν= \(6.01 * 10^{20\) hz

The speed of light is described as the product of the wavelength and frequency of the light wave. Every color of the spectrum corresponds to a different wavelength and frequency.

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The sample of oxygen will occupy approximately 18.5 mL at -70 °C and the same pressure.

The force exerted by a gas on specific area is known as gas pressure..

As we know, (P₁ V₁) /(T₁) = (P₂V₂) /(T₂)

Given, P₁ is the initial pressure (452 torr); V₁ is initial volume (32.2 mL)

T₁ is initial temperature in Kelvin (30 °C + 273.15 = 303.15 K)

P₂ is final pressure (452 torr); V₂ is final volume (what we want to find)

T₂ is the final temperature in Kelvin (-70 °C + 273.15 = 203.15 K)

Now, V2 = (P₁ V₁ T₂) / (P2 T₁)

V₂ = (452 torr x 32.2 mL x 203.15 K) / (452 torr x 303.15 K)

V₂ ≈ 18.5 mL

Therefore, the sample of oxygen will occupy approximately 18.5 mL at -70 °C and the same pressure.

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299.7g of H2O will be produced.

1st) With the balanced chemical equation and the molar mass of CH4 and H2O, we can calculate the amount of H2O that is produced by stoichiometry:

- CH4 molar mass: 16g/mol

- H2O molar mass: 18g/mol

According to the balanced equation, 16g of CH4 will produce 36g of H2O (2 x 18g).

2nd) Now, with a mathematical rule of three we can calculate the grams of water that will be produced from 133.2 grams of CH4:

Finally, 299.7g of H2O will be produced from 133.2 grams of CH4.

The statements that are concerning gas pressure is/are correct :

1) Gas pressure arises from collisions of gas molecules with the walls of the container holding the gas.
2) Increasing the number of gas molecules within a container increases the number of collisions with the walls of the container, thereby increasing the gas pressure.
3) As the temperature of a gas increases, gas molecules exert more force on the walls of their container.

Your answer: All three statements are correct.

Explanation:
1) Gas pressure is a result of gas molecules colliding with the walls of their container, transferring their momentum and creating force.
2) When you increase the number of gas molecules in a container, the number of collisions with the walls also increases, which in turn increases the gas pressure.
3) As the temperature of a gas increases, the kinetic energy of the gas molecules increases, leading to more forceful collisions with the walls of the container and a higher gas pressure.

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ANSWER

An atom of element is electrically neutral because the number of positive protons are equal to number of negative electrons.

Answer:

Although thomson model of atom explained that atoms are electrically neutral, the results of this experiment carried by other scientists couldnot be explained by this model

The number of moles of carbon dioxide, CO₂ are equal to the 0.0306 mole.

We have a molecule of carbon dioxide, CO₂ with one carbon atom contributes 12.01 g/mol, the two oxygens together contribute (2)(16.00) = 32.00 g/mol. The molar mass of carbon dioxide is equals to 44.01 g/mol. Let the required number of moles of carbon dioxide be "n". From above data that 1.84× 10²³ CO₂ molecules. So, one mol = 6.022× 10²³molecules then Number of moles = molecules/6.022× 10²³ molecules/mol. Now, to determine the moles in 1.84× 10²² molecules of carbon dioxide :

n = 1.84× 10²² /6.022× 10²³

n = 0.030 mol of CO₂ are present

Hence, the required number of moles is 0.030 mol.

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Answer:

5

Explanation:

mark me brainliest!

5. To solve question 5, we need to know the molecular formula of Uraninite, which is UO2.

So we need to know the molar mass of U and of O. We can look for it at the periodic table.

Molar mass of Uranium: 238.02891 g/mol

Molar mass of Oxygen: 15.999 g/mol

In the compound, we have 1 uranium and 2 oxygen.

So to calculate the percent of Uranium, we use a rule of 3:

270.03 ---- 100% (It is the molar mass of the compound)

238.0289 ---- x% (It is the molar mass of uranium)

270.09 * x = 238.0289 * 100

x = 23,802.89/270.09

x = 88.13%

So the percent of uranium in uraninite is 88.13%

Now for oxygen:

We have 2 atoms of oxygen in UO2, so we need to multiply its molar mass by 2: 15.999*2 = 31.998

Now we do the same rule of 3:

270.03 ---- 100% (It is the molar mass of the compound)

31.998 ---- x% (It is the molar mass of 2 atoms of oxygen)

x = 11.72%

The percent of oxygen in uraninite is 11.72%

Answer: As a second follow up to Question 3, uraranite is 88.13% uranium and 11.72% oxygen by mass.

Answer:

Molar mass of H3PO4  = 97.99 g/mol (Approx.)

Explanation:

Find:

Molar mass of H3PO4

Given;

Molar mass of H = 1.0079 g/mol

Molar mass of P = 30.974 g/mol

Molar mass of O = 15.999 g/mol

Computation:

Molar mass of H3PO4  = (1.0079)(3) + 30.974 + 15.999(4)

Molar mass of H3PO4  = 3.0237 + 30.974 + 63.996

Molar mass of H3PO4  = 97.9937

Molar mass of H3PO4  = 97.99 g/mol (Approx.)

Answer:

The above answer is correct

Explanation:

I took the test