he amount of radiation a substance will absorb is di- rectly proportional to its concentration as defined by ___________ law.

The equation derived from the combined gas law is option D: P₁V₁T₁ = P₂V₂T₂. Option D

The combined gas law combines Boyle's law, Charles's law, and Gay-Lussac's law into a single equation that relates the pressure, volume, and temperature of a gas sample. It allows us to analyze changes in these variables while keeping the amount of gas constant.

Boyle's law states that at a constant temperature, the pressure and volume of a gas are inversely proportional. In other words, if the volume of a gas decreases, its pressure increases, and vice versa. This is expressed as P₁V₁ = P₂V₂.

Charles's law states that at a constant pressure, the volume and temperature of a gas are directly proportional. If the temperature of a gas increases, its volume increases, and vice versa. This is expressed as V₁/T₁ = V₂/T₂.

Gay-Lussac's law states that at a constant volume, the pressure and temperature of a gas are directly proportional. If the temperature of a gas increases, its pressure increases, and vice versa. This is expressed as P₁/T₁ = P₂/T₂.

By combining these three laws, we obtain the combined gas law equation: (P₁V₁)/T₁ = (P₂V₂)/T₂. To eliminate the division, we can cross-multiply to get P₁V₁T₂ = P₂V₂T₁, which can be rearranged as P₁V₁T₁ = P₂V₂T₂.

This equation allows us to calculate the final values of pressure, volume, or temperature when any two of these variables change while the amount of gas remains constant. It is particularly useful in analyzing the behavior of gases under different conditions or when studying gas systems.

Option D

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Answer:

it was A for me.. don't know if this will help

Explanation:

The mechanical procedure of peeling is often referred to as exfoliation. Exfoliation is the term used to describe the process whereby rock sheets gradually separate from exposed rocks along fissures.

By using mechanical means, rocks and minerals are broken apart. Their chemical make-up does not alter. A big rock mass can be physically weathered into smaller, more easily moved, and more readily eroded pieces. Even enormous rocks frequently break along weak spots in nature. Exfoliation in metamorphic rocks, joints in huge igneous rocks, and bedding planes in sedimentary rocks are a few of the most typical.

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The only correct statement among the options as they are listed is that; A solute dissolves in a solvent to make up a solution (Option B)

A solution is composed of a solute and a solvent. The solute is the solid that is dissolved in the solvent while the solvent is the medium in which the solid is dissolved.

Given that the solute can be a solid, liquid or gas, a solution could be homo--genous or het--erogenous as the case may be.

Thus, the only correct statement among the options as they are listed is that; A solute dissolves in a solvent to make up a solution (Option B)

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Answer:

Explanation:

[2-0] NC Special Operation

[2] Supervisor

[2-1] Emergency Response

[2-2] Juggernaut

[2-3] Commander

[2-4] Division Director    

Answer:

1. Healthy and well educated people contribute to their societies in positive way

2. Malnourished and illiterate people cannot contribute much to their respective societies.

Explanation:

When basket ball is dropped from a height, its potential energy decreases and its kinetic energy increases till it reaches the ground. The highest kinetic energy is at ground level.

The energy that an object has as a result of motion is known as kinetic energy. It is described as the effort required to move a mass-determined body from rest to the indicated velocity. The body holds onto the kinetic energy it acquired during its acceleration until its speed changes.

A ball drops from the top of a building and picks up speed as it descends. Its speed is increasing by 10 m/s every second. What we refer to as motion with constant acceleration is, for example, a ball falling due to gravity.

Thus, The highest kinetic energy is at ground level.

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Answer:

Well you can not serve it because it is a slow cooker it cooks slow and the refrigerator uses power.Stove tops use power too, I wouldn't feed it to the dog because it whatever you made could possibly make the dog sick and throwing it away is a waste of money. Out of all of those explanations choose the best one. Which ever one you pick whether right or wrong, think about it.

Explanation:

There are so many elements that can be able to bond with oxygen in a covalent manner as shown below.

Elements that can bond covalently with oxygen to form two-atom molecules include carbon (C), nitrogen (N), fluorine (F), chlorine (Cl), and many others.

The specific element that would form a covalent bond with oxygen depends on a variety of factors, including the electronegativity and valence electron configuration of the elements involved as shown.

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The values of the given measurement in the correct significant figures are as follows:

Temperature:

Volume:

Measurement refers to the procedure where the magnitude or quantity of a given property of a substance is determined.

Measurement can be done using instruments depending on the property and type  of measurement to be done.

The measurements of properties expressed in numerical form is known as quantitative measurements.

Quantitative measurements have two parts; the number and the unit.

Some examples of quantitative measurements are:

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Explanation:

molarity=no. of moles of solute/solution in litres

6.17M=no. of moles of solute/9.4 L

6.17×9.4=no. of moles of solute

57.9 =no. of moles of potassium fluoride KF

no. of moles=given mass /molar mass

57.9=given mass/58

3358.2 g

(i) The vehicle outputs approximately 11.58 kg of CO₂ per week. (ii) The Biofuel Obligation Scheme in Ireland is implemented by requiring fuel suppliers.

To calculate the amount of CO₂ output per week, we need to determine the amount of fuel used and then use the given combustion equation to find the ratio of CO₂ produced per unit of fuel.

Given;

Average fuel efficiency: 7.5 km per litre

Distance traveled per week: 300 km

Mass of fuel per litre: 0.75 kg

First, we calculate the total fuel used per week;

Fuel used = Distance traveled / Fuel efficiency

= 300 km / 7.5 km per litre

= 40 litres

Next, we find the mass of fuel used per week:

Mass of fuel used = Fuel used × Mass of fuel per litre

= 40 litres × 0.75 kg per litre

= 30 kg

Using the combustion equation, we know that 2 moles of C₈H₁₈ produce 16 moles of CO₂. Therefore, we can calculate the moles of CO₂ produced from the given mass of fuel;

Moles of CO₂ produced = Moles of C8H18 × (16 moles of CO₂ / 2 moles of C₈H₁₈)

= (30 kg / (114 g/mole)) × (16 moles of CO₂ / 2 moles of C₈H₁₈)

= (30,000 g / 114 g/mole) × (16 moles of CO₂ / 2 moles of C₈H₁₈)

= 263.16 moles of CO₂

Finally, we convert the moles of CO₂ to kilograms;

Mass of CO₂ produced = Moles of CO₂ produced × Molar mass of CO₂

= 263.16 moles × (44 g/mole)

= 11,579.04 g

= 11.58 kg (rounded to two decimal places)

Therefore, the vehicle outputs approximately 11.58 kg of CO₂ per week.

The Biofuel Obligation Scheme in Ireland is implemented by requiring fuel suppliers to include a certain percentage of biofuels in their overall fuel sales, thereby reducing the carbon footprint by promoting the use of renewable and lower-carbon-emitting fuels.

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For sale in her store, the florist ordered 72 daisies. Only one-fourth of the daisies are yellow, the rest are white. The florist was selling 54 yellow daisies.

Determine the quantity of yellow daisies the florist had to sell. We must first ascertain what proportion of the daisies are white in order to calculate how many white daisies the florist was required to sell. One-fourth of the daisies are said to be white. In order to indicate the quantity of white daisies, we can use the fraction \frac{1}{4} .\frac{1}{4} * 72= 18 .

The florist thus has 18 white daisies for sale. The remaining daisies must be yellow if \frac{1}{4} of them are white. We must take the number of white daisies out of the overall number of daisies in order to determine how many yellow daisies there are.72 - 18= 54.

54 yellow daisies were therefore available for purchase at the florist.

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Answer:

ones that can be mixed together

Explanation:

like water or ethanol

Answer:

miscible liquids are harder to separate as they dissolve in each other

Explanation:

hope this helps!

Olive oil substance is likely to contain the highest percentage of double bonds in the hydrocarbon chains of its triglycerides.

In organic chemistry, hydrocarbons are organic compounds composed entirely of hydrogen and carbon. [1]:620 hydrocarbons are examples of group 14 hydrides. Hydrocarbons are generally colorless and hydrophobic, and their odor is usually faint or exemplified by the liquid odor of gasoline or lighters. They come in a variety of molecular structures and phases.

Examples of hydrocarbons include gasoline, kerosene, lamp oil, and furniture oil. If someone accidentally drinks a hydrocarbon product that gets into their lungs, it can cause breathing problems. Severe injury or even death can result. Hydrocarbons are the primary energy storage molecules of all major fossil fuels (including coal, oil, and natural gas) and biofuels. It is also a raw material in the manufacturing process of many types of plastics.

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Answer:

19.56160744 g F2 = 19.6 grams F2

Explanation:

Molar mass of F2: 2(19.00)=38.00 g/mol

Atoms --avogadro's number--> moles --molar mass--> grams

Answer:

Sample A=40 Sample B=50

Explanation:

32+48=80

32/80x100=40

The 100 is to convert it to a percentage

___________________________

Sample B

same thing

30+30=60

30/60x100=50

The mass percent of sulfur in compound B is 50 %

Mass percent is defined as a way of expressing a concentration or describing the component in a particular mixture.

It can also be defined as a mass of a element or solute divided by the mass of compound or solvent.  

Mass percent of sulfur of sample A

= 32 + 48 = 80

= 32 / 80 x 100

= 40 %

Mass percent of sulfur of sample B

= 30 + 30 = 60

= 30 / 60 X 100

= 50 %

Thus, the mass percent of sulfur in compound B is 50 %

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Answer:

There is reaction but it's a series of equilibria we have to consider, not a simple complete change.

First the ions separate:

NH4+Cl-(s) = NH4+(aq) + Cl-(aq)

Ammonia is a weak base and water contains hydroxide ions from its dissociation:

H2O = H+(aq) + OH-(aq)

So some ions react:

NH4+(aq) + OH-(aq) = NH4OH(aq)

This means that more water splits up to replace the lost hydroxide ions. This results in a build up of hydrogen ions and this is why the solution is acidic.

Answer:

The Solar Nebula Theory accounts for the creation of solar systems, stars, and planets. The theory accounts for planet composition by stating that iron compounds, silicates, and dust clump together to form planetesimals. Because of the proximity of the sun, ices and gases cannot condensate near them, so they do not become gas giants. The planetesimals then collide together due to gravity and collect to form our rocky planets.

Explanation:

The pressure of hydrogen gas formed in mmHg is 716.24 mmHg.

Based on the information provided, we can use the formula for Dalton's Law of Partial Pressures which states that the total pressure of a gas mixture is equal to the sum of the partial pressures of each gas present in the mixture.
In this case, the total gas pressure collected over water is 740.0 mmHg. We know that the gas we are interested in is hydrogen gas, so we need to find the partial pressure of hydrogen gas in the mixture.
To do this, we need to subtract the vapor pressure of water at 25.5°C from the total pressure to get the pressure of the gas. According to a vapor pressure chart, the vapor pressure of water at 25.5°C is 23.76 mmHg.
Thus, the partial pressure of hydrogen gas can be calculated as:
Partial pressure of hydrogen gas = Total gas pressure - Vapor pressure of water
Partial pressure of hydrogen gas = 740.0 mmHg - 23.76 mmHg
Partial pressure of hydrogen gas = 716.24 mmHg
Therefore, the pressure of hydrogen gas formed in mmHg is 716.24 mmHg.

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The electrical potential difference between the cell's positive and negative electrodes is referred to as the voltage of a cell. It is also known as the electromotive force (EMF) or cell voltage.

The given reactions are the oxidation of Fe(s) to Fe3+(aq) and the reduction of O2(g) and 2H2O(l) to 4OH-(aq) with the gain of 4 electrons. To calculate the voltage of the cell, we need to use the formula:

Ecell = Ecathode - Eanode

where Ecathode is the reduction potential of the cathode and Eanode is the oxidation potential of the anode. The reduction potential is the tendency of a substance to gain electrons and undergo reduction, while the oxidation potential is the tendency of a substance to lose electrons and undergo oxidation.

We can find the reduction potential of the cathode (O2(g) + 2H2O(l) + 4e- → 4OH-(aq)) from a standard reduction potential table, which is +0.40 V. For the oxidation potential of the anode (Fe(s) → Fe3+(aq) + 3e-), we need to reverse the sign and use the value from the table, which is -0.44 V.

Substituting these values in the formula, we get:

Ecell = +0.40 V - (-0.44 V)
Ecell = +0.84 V

Therefore, the voltage of the cell is +0.84 V.

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Average Kinetic energy of solution is high, the temperature of the solution is higher than original  solution.

Option A is correct.

An object's or a particle's motion gives it kinetic energy, a type of energy. When a net force is applied to an object, which is work that transfers energy, the object accelerates and gains kinetic energy.

The capacity for work is perhaps kinetic energy's most significant property. Work is defined as force exerted in the direction of motion on an object. Energy and work are so intertwined that they are interchangeable. Either of the following methods can be used to obtain the kinetic energy: the effort required to stop any moving object. How much work done in giving the speed to the body from the condition of rest.

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(B) 2-methylbut-2-ene. 2-methylbut-2-ene, can be polymerized to form longer chain polymers through addition reactions with other alkene molecules.

2-Methylbut-2-ene is an alkene hydrocarbon molecule with the chemical formula C5H10. It comprises a carbon skeleton with five carbon atoms and 10 hydrogen atoms. The molecule contains a double bond between the second and third carbon atoms and a methyl group (-CH3) attached to the second carbon atom.

Polymerization is the process of forming long chains of repeating units, called polymers, from smaller molecules, known as monomers. The process involves the covalent bonding of monomers through addition reactions.

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The enthalpy change needed for one mole of a substance to freeze is the opposite of the enthalpy change for melting, but with the same magnitude. Therefore, the enthalpy change for freezing would be ΔH = +79 kJ/mol. Option B.

When a substance melts, it absorbs heat from its surroundings, which leads to an increase in the enthalpy of the system. This increase in enthalpy is represented by a negative value for the enthalpy change, indicating an endothermic process. In this case, the given enthalpy change for melting is ΔH = -79 kJ/mol.

For the substance to freeze, the reverse process occurs. Heat is released from the substance, causing it to transition from the liquid phase to the solid phase. This release of heat results in a decrease in the enthalpy of the system. The magnitude of the enthalpy change for freezing would be the same as the enthalpy change for melting but with an opposite sign. Thus, the enthalpy change for freezing would be ΔH = +79 kJ/mol.

Therefore, the correct answer is (b) ΔH = +79 kJ/mol. It represents the enthalpy change needed for one mole of the substance to freeze. Option B is correct.

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Answer:

-34¨F

Explanation:

Answer:

For 1, your answer is b. absorbs, endothermic. For 2, your answer is a. a solution becomes more dilute.

Explanation:

I took the test.