Using the compounds CHCl3 and CCl4 as examples, explain the difference between a polar bond and a polar compound.

Molarity of a solution is the ratio of the number of moles of solutes to the volume of solution in liter. The number of moles of solute in of 800 ml or 0.8 L 1.25 M ammonia  (NH₃) solution is 1 mole.

Molarity of a solution is a term to represent its concentration. It is the ratio of the number of moles of solute to the volume of solution in liters.

molarity = no. of moles / volume of solution in L.

Molarity is the most common concentration term and it is a temperature dependent quantity. It is given the molarity of ammonia  NH₃, solution is 1.25 M and the volume of solution is 800 ml or 0.8 L.

The number of moles of ammonia solutes in the solution is calculated as follows:

no. of moles = molarity × volume in L

                     = 1.25 mol/L × 0.8 L

                     = 1 mole

Hence, one mole of ammonia is present in 0.8 L of 1.25 M ammonia solution.

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Answer: 0.375L

Explanation: Using M1V1=M2V2, we can solve for V1.

12M*V1=1.5M*3.0L

V1 = \(\frac{1.5M*3.0L}{12M}\)

V1 = 0.375L.

0.375 L volume of the solution she needed to prepare 3.0 L of a 1.5 M HCl solution.

A homogenous mixture of one or more solutes that have been dissolved in a solvent is known as a solution. The material that a solute dissolves in to create a homogenous mixture is known as a solvent.

The component that dissolves in a solvent to create a homogenous mixture is known as a solute.

M₁ is the initial concentration of HCl solution = 12.0 M

V₁ is the volume of initial HCl solution that is needed

M₂ is the final concentration of HCl solution = 1.5 M

V₂  is the final volume of HCl solution to be prepared = 3.0 L

To find V₁, we get

V₁ = (M₂ V₂) / M₁

calculating the values, we will get:

V₁ = 1.5 M x 3.0 L / 12.0 M

= 0.375 L

Therefore, tech required to take 0.375 L of the 12.0 M HCl solution and dilute it to  3.0 L to make a 1.5 M HCl solution.

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Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

density = 2.7 g/mL

volume = 11 mL

The mass is

mass = 2.7 × 11

We have the final answer as

Hope this helps you

4.5 billion years old

hope this helps

Answer:

Earth's water is 4.5 billion years old.

Explanation:

Water is a transparent, odorless, tasteless liquid, a compound of hydrogen and oxygen, H2O, freezing at 32°F or 0°C and boiling at 212°F or 100°C, that in a more or less impure constitutes rain, oceans, lakes, rivers, etc.: it contains 11.188 percent hydrogen and 88.812 percent oxygen, by weight.

Answer: Molarity is the concentration of a solution expressed as the number of moles of solute per litre of solution

Explanation: Molarity is the concentration of a solution expressed as the number of moles of solute per litre of solution

Answer:

A. A measurement of the concentration of a solution.

Explanation:

The other user was correct. :)

Answer:

I WILL ACHIEVE GREATNESS

Explanation:

Answer:

.

Explanation:

The Electronegativity Difference between the C and H atoms in ethane would be 0.35.

The structure of ethane is as follows:A) Electronegativity of Carbon (C) is 2.55, and Hydrogen (H) is 2.20.  Electronegativity Difference (ΔEN) = 2.55 - 2.20 = 0.35B) There would be a partial negative charge on the Carbon atom, and there would be a partial positive charge on the Hydrogen atoms.C) The ethane molecule is less polar than water. This is because the electronegativity difference between the Carbon and Hydrogen atoms is low (0.35) in ethane, whereas the difference between the Oxygen and Hydrogen atoms is high (1.4) in water. Due to the high electronegativity difference in water, it creates a dipole moment, making it a polar molecule. Whereas ethane has no dipole moment and is considered a nonpolar molecule.D) If the oceans were filled with ethane instead of water, then there would be no hydrogen bonding. As a result, many of the physical properties of the ocean would be different.

For example, the freezing point of the ocean would be much lower because of the weak intermolecular forces between ethane molecules. Due to the absence of hydrogen bonding, the viscosity of the oceans would be less than that of water, leading to easier movement of organisms.

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Answer:

The speed of molecules in a gas is directly proportional to the square root of the temperature and inversely proportional to the square root of the molar mass.

Since both gases are at the same temperature, we only need to compare their molar masses.

The molar mass of carbon dioxide (CO2) is 44 g/mol and the molar mass of hydrogen (H2) is 2 g/mol.

Therefore, the square root of the molar mass of hydrogen is smaller than the square root of the molar mass of carbon dioxide.

This means that the speed of hydrogen molecules is greater than the speed of carbon dioxide molecules at the same temperature.

The statement that is not true about indicators is that Bromothymol blue can change blue to yellow around pH=7. ​

Indicators are chemical species that change color when in acidic, basic or neutral media.

This color change is caused by chemical changes in the indicator molecule.

Bromothymol blue is an indicator that has a yellow color in acidic medium, a green color at pH=7 and a blue color in basic medium.

It is not a true statement that; Bromothymol blue can change blue to yellow around pH=7. ​

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Answer:

The real acidity of milk is due to lactic acid. This is never found in milk when it is first drawn from the udder. It is produced by the action of the lactic acid organisms on the milk sugar. The so-called apparent acidity of milk is what gives fresh milk its acid reaction.

Answer:

C.) No. of electrons

Explanation:

A.) is incorrect. The atomic number represents the number of protons in an element. Nitrogen (N) and sodium (Na) always have a differing amount of protons.

B.) is incorrect. The mass number represents the number of protons and neutrons in an element. The number of neutrons and protons are specific to each element (disregarding isotopes). When elements ionize, these amounts are not altered.

C.) is correct. When an element becomes an ion, the number of electrons change. When nitrogen gains 3 electrons and sodium loses 1 electron, they end up having the same number of electrons (10).

D.) is incorrect. When elements ionize, the number of neutrons does not change. The only way two different elements could have the same number of neutrons is if at least one of the elements is an isotope. Isotopes are two or more atoms of the same element that differ in their amounts of neutrons.

Answer:

By Boiling Them soo water can evaporate and separates from salt.

Answer:

sodium perchorate is NaCLO4

calcium sulfite CaSO3

potassium hydroxide KOH

lithium nitrate LiNO3

Explanation:

sodium perchorate has one Sodium

one Chlorine and 4 Oxygen

calcium sulfite has one Calcium on sulfate and 3Oxygen

lithium nitrate has one Lithium oneNitrogen

3 Oxygen

Answer:

1.03 x 10²³ atoms NaCl

Explanation:

To find the amount of table salt (NaCl) in atoms, you need to (1) convert grams to moles (using the molar mass) and then (2) convert moles to atoms (using Avogadro's Number). It is important to arrange the ratios/conversions in a way that allows for the cancellation of units.

(Step 1)

Molar Mass (NaCl): 22.99 g/mol + 35.45 g/mol

Molar Mass (NaCl): 58.44 g/mol

10 grams NaCl                1 mole
------------------------  x  -----------------------  =  0.17 moles NaCl
                                   58.44 grams

(Step 2)

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

0.17 moles NaCl           6.022 x 10²³ atoms
--------------------------  x  --------------------------------  =  1.03 x 10²³ atoms NaCl
                                                 1 mole

Answer:

Arsenic (As) anion has -‐3 charge, but also forms cations with +3 or +5 charge.

Explanation:

Explanation:

The answer would be Berium because it can mix as well with other elements in the periodic table.

Barium is regarded as the most reactive elements out of all the options

provided.

Barium is an element with symbol Ba and atomic number 56. It belongs to

Group 2 metals whose reactivity increases as we go down the group.

The alkaline earth metals which are in Group 2 of the Periodic Table include

: beryllium, magnesium, calcium, strontium, barium, and radium

The increase in reactivity down the group is as a result of the decreasing

ionization energy required to form new compounds. The Ionization energy

decreases due to more inner shells and increase in distance from the

nucleus.

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Answer:

so so

Explanation:

this your question?? <_>

Answer:

Explanation:

Given the data in the question;

wavelength λ₁ = 853 nm = 853 × 10⁻⁹ m

wavelength λ₂ = 865 nm = 865 × 10⁻⁹ m

we determine the energy of each photons using the following expression;

\(E_{photon\) = hc / λ

where h is Planck's constant ( 6.626 × 10⁻³⁴ J.s )

c is speed of light ( 3 × 10⁸ m/s )

For Photon with wavelength λ₁ = 853 × 10⁻⁹ m

\(E_{photon1\) = hc / λ

we substitute

= ( ( 6.626 × 10⁻³⁴ J.s )( 3 × 10⁸ m/s ) ) / (853 × 10⁻⁹ m)

= 1.9878 × 10⁻²⁵ / 853 × 10⁻⁹

= 2.33 × 10⁻¹⁹ J

For Photon with wavelength  λ₂ = 865 × 10⁻⁹ m

\(E_{photon2\) = ( ( 6.626 × 10⁻³⁴ J.s )( 3 × 10⁸ m/s ) ) / (865 × 10⁻⁹ m)

= 1.9878 × 10⁻²⁵ / 865 × 10⁻⁹

= 2.298 × 10⁻¹⁹ J

We know that; energy of the combined photon will be equal to the sum of energies of the two photons.

so

Energy of the combined photon = \(E_{photon1\) + \(E_{photon2\)

\(E_{combined\) = 2.33 × 10⁻¹⁹ J + 2.298 × 10⁻¹⁹ J

\(E_{combined\)  = 4.628 × 10⁻¹⁹ J

so wavelength of the new combined photon will be;

\(E_{combined\) = hc / λ\(_{combined\)

\(E_{combined\)λ\(_{combined\) = hc

λ\(_{combined\) = hc / \(E_{combined\)

we substitute

λ\(_{combined\) = ( ( 6.626 × 10⁻³⁴ J.s )( 3 × 10⁸ m/s ) ) / 4.628 × 10⁻¹⁹ J

= 1.9878 × 10⁻²⁵ / 4.628 × 10⁻¹⁹

= 4.2952 × 10⁻⁷ m

= ( 4.2952 × 10⁻⁷ × 10⁹ )nm

= 429.5 nm

Therefore, Wavelength of the new 'combined' photon is 429.5 nm

Elevation of ATP (adenosine triphosphate) would be an example of a compound that will reduce activity through the TCA cycle.

The TCA cycle also known as the citric acid cycle or Krebs cycle, is a series of metabolic reactions that occur in the mitochondria of cells and play a crucial role in the production of energy. However, under certain metabolic conditions, the flux through the TCA cycle can be reduced due to an increase in TCA cycle inhibitors.

One such inhibitor is ATP, which is the primary energy currency of the cell.

When ATP levels are high, it signals to the cell that there is enough energy available and there is no need to produce more through the TCA cycle.

As a result, the activity of the TCA cycle is reduced, leading to a decrease in the production of energy.

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Deprotonation refers to the removal of a proton from a molecule, while an enolate is an anionic species formed by deprotonation of the α-carbon adjacent to a carbonyl group. An enone, on the other hand, is a molecule containing a carbon-carbon double bond and a carbonyl group.

"Deprotonate," "enolate," and "enone" are terms used in organic chemistry to describe specific reactions and functional groups. Let's break down each term:

Deprotonate: Deprotonation refers to the removal of a proton (H+) from a molecule. It is a process that involves the transfer of a proton from a molecule to a base. The resulting species is negatively charged and called an anion.

Deprotonation reactions are common in various organic reactions and play a crucial role in the formation of new bonds and the generation of reactive intermediates.

Enolate: An enolate is an anionic species that contains a carbon-carbon double bond and a negatively charged oxygen or nitrogen atom. Enolates are formed through deprotonation of the α-carbon adjacent to a carbonyl group (such as a ketone or aldehyde).

The formation of enolates is an important step in many organic reactions, such as aldol condensation and Michael addition, as enolates serve as nucleophiles or reactive intermediates.

Enone: An enone is a molecule that contains a carbon-carbon double bond (C=C) and a carbonyl group (C=O) adjacent to each other. Enones are carbonyl compounds that possess a conjugated double bond system. They exhibit unique reactivity due to the presence of both a double bond and a carbonyl group, making them valuable intermediates in organic synthesis.

Enones are involved in various reactions, including Michael additions, Diels-Alder reactions, and cycloadditions, to form complex organic compounds.

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Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, 4.28×10⁻¹⁹J is the energy of a photon that emits a light frequency of  6.67×10⁻³⁴ Hz.

Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave.

There is a relation between energy of wave. frequency of wave, and wavelength of wave

Mathematically,

E=h×ν

where,

E = energy of electromagnetic wave =?

h is planks constant having value 6.67×10⁻³⁴js

ν= frequency of photon=6.42X10¹⁴ Hz

Substituting all the given values in the above equation, we get

E= 6.67×10⁻³⁴×6.42X10¹⁴

E=4.28×10⁻¹⁹J

Therefore, 4.28×10⁻¹⁹J is the energy of a photon that emits a light frequency of  6.67×10⁻³⁴ Hz.

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Answer: Bromine water

Explanation:

Alkanes are saturated hydrocarbons with single bond and the alkenes as unsaturated hydrocarbons with double bonds.

Bromine water is a chemical reagent which is used to distinguish between alkane and alkene.

It is of orange color in solution form and turns to colorless in alkene.

The alkanes to show any reaction with bromine water.

Considering the definition of pH, the pH is 6.35 and the solution is acidic.

pH is the Hydrogen Potential and it is a measure of acidity or alkalinity. pH indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:

pH= - log [H⁺]

The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

In this case, being [H⁺]=4.5×10⁻⁷ M, you can replace this value in the definition of pH:

pH= -log (4.5×10⁻⁷ M)

Solving:

pH= 6.35

Finally, the pH is lower than 7, the solution is acidic.

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1. The constituent gases of air are:

2. The surrounding air is not seen with the eyes because it is transparent. Air molecules are not visible to the na-ked eye, and they do not scatter or absorb visible light significantly. Therefore, air appears colorless and transparent.

3. To prove that air supports burning, you can perform an experiment with a burning candle. Place a glass jar or bell jar over a lit candle, ensuring that the jar is airtight. As the candle burns, it consumes oxygen from the air inside the jar. Eventually, the candle flame will go out due to the lack of oxygen, proving that air (specifically oxygen) is necessary for burning.

4. To show that air occupies space, you can perform a simple experiment using a plastic bottle or syringe. Fill the bottle or syringe with water, ensuring there are no air bubbles. Then, cover the opening tightly and try to compress the air inside. You will find that it is not possible to compress the air significantly, indicating that air occupies space.

5. To prove that air has weight, you can use a sensitive balance or scale. Weigh an airtight container or balloon, and then fill it with air. The weight of the container or balloon with the added air will be greater than its initial weight, demonstrating that air has weight.

6. Air is useful to us in various ways. Three points highlighting the importance of air are:

7. Three properties of air include:

Air exerts force in various ways. For example, air pressure allows objects like airplanes to fly by providing lift. Air resistance or drag opposes the motion of objects moving through the air, creating a force that can affect their speed and trajectory.

8. Four effects of air pollution include:

9. Causes of pollution:

10. Two control measures for air pollution include:

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Answer:

A

Explanation:

I took the test 100%, good luck

Erosion and deposition work together to form sand dunes as waves cause erosion along coastlines and deposit sand away from the shore. So the correct option is A.

Erosion is the removal of the material's surface from the crust of the Earth. It is mainly the debris of soil and rock. The eroded materials are transported by natural agents such as water or wind from the point of their removal.

The term erosion gives an explanation for the wearing down and molding of the landforms on the surface of Earth. This includes the rock weathering from its original position, the transport of this weathered material, and the erosion which is the result of the action of wind or glacial processes, etc.

The more appropriate term for this would be denudation or degradation. This includes processes of mass movement. This is a definition of erosion that is very narrow and excludes the process of the transport of eroded material by natural agencies.

Therefore, the correct option is A.

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Answer:I do not know

Explanation: i need to see the statements to be able to give you an answer

Answer:Theres no statements to give you a answer