Pulling without specifying how to reconcile divergent branches is.

Enthalpy, in a technical sense, refers to the internal energy needed to create a system as well as the energy needed to create space for it by establishing its pressure, volume, and displacing its surroundings.

In a thermodynamic system, energy is measured by enthalpy. Enthalpy is a measure of a system's overall heat content and is equal to the system's internal energy plus the sum of its volume and pressure.

A state function that is entirely based on state functions P, T, and U is how enthalpy is also described.

Here the equation used is:

q = n × ΔH

n = Mass / Molar mass

n = 253 / 122.55 = 2.064 mol

q =  2.064 × -91 = -187.82 kJ

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The Ideal Gas Law and consider the molar mass of gases. The Ideal Gas Law is PV = north 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. Since we want to keep the temperature constant, we can focus on the moles (n) and molar mass.

The find a gash at, when 10.0 g is added, will make the balloon more than twice as large. We can express the condition . We can express the condition for the final volume as: V(final) > 2 * V(N2) Using the Ideal Gas Law, we can write n(final) * RT / P > 2 * n(N2) * RT / P Since temperature and pressure are constant, we can cancel RT and P from both sides: n(final) > 2 * n(N2) Now we need to find a gas that, when 10.0 g is added, will have more than twice the moles of N2. Let's denote the unknown gas as X: n(X) = mass(X) / molar mass(X) n(X) > 2 * n(N2) Substitute the mass and n(N2) values: 10.0 g / molar mass(X) > 2 * 0.357 moles Solve for the molar mass of X: molar mass(X) < 10.0 g / (2 * 0.357 moles molar mass(X) < 14.0 g/mol So, you should add a gas with a molar mass less than 14.0 g/mol to achieve the desired volume. Hydrogen gas (H2) is a suitable choice since its molar mass is 2 g/mol, which is less than 14.0 g/mol.

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The percent abundance of the isotope with an atomic mass of 120.905 is approximately XX%.

To calculate the percent abundance, we need to compare the relative abundance of the two isotopes. Given that there are two isotopes with atomic masses of 120.905 and 122.921, we can assume that the sum of their percent abundances is 100%.

Let's denote the percent abundance of the isotope with an atomic mass of 120.905 as "x". The percent abundance of the other isotope (with atomic mass 122.921) can then be expressed as (100 - x).

Since the atomic mass is directly proportional to the percent abundance, we can set up the following equation:

(120.905 * x) + (122.921 * (100 - x)) = 121.764

Solving this equation will give us the value of x, which represents the percent abundance of the isotope with an atomic mass of 120.905. Once we find this value, we can express it as a percentage to determine the answer.

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The equilibrium vapor pressure with respect to water (eow) is 259.9 Pa. assume that saturation vapor pressure is same as equilibrium vapor pressure.

Therefore, the RH at the frost point is  

RH = (eow / saturation vapor pressure) × 100

= (259.9 Pa / 259.9 Pa) × 100

= 100%

b) At T = -11 °C, we need to compare the equilibrium vapor pressure with respect to water (eow) and the equilibrium vapor pressure with respect to ice (coi) to determine if ice particles will form. From the given table, at T = -11 °C, the equilibrium vapor pressure with respect to water (eow) is 237.7 Pa, and the equilibrium vapor pressure with respect to ice (coi) is 165.3 Pa.

The air is supersaturated with respect to ice, and the presence of Kaolinite particles can provide surfaces for water droplets to condense onto, leading to the formation of ice particles.

c) At T = -12 °C, we compare the equilibrium vapor pressure with respect to water (eow) and the equilibrium vapor pressure with respect to ice (coi). From the given table, at T = -12 °C, the equilibrium vapor pressure with respect to water (eow) is 217.3 Pa, and the equilibrium vapor pressure with respect to ice (coi) is 181.2 Pa.

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Answer:

When we draw Lewis dot structure we do use only valence electron of the elements of that molecule. This is because only valence atom takes participate in the formation of compound, electrons of inner shell are not disturbed. The valence elctron gives maximum property of the compound regarding it's physical and chemical properties and helps us to identify the overall structure and bonding of molecule, to understand overall mechanism of any reaction!

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Inputs for photosynthesis: Carbon dioxide, water, and sunlight energy. Outputs of photosynthesis: Oxygen and glucose.

The purpose of photosynthesis in plants is to convert carbon dioxide, water, and sunlight energy into oxygen and glucose, which are essential for the survival and growth of the plant.

Photosynthesis is the primary source of energy for most ecosystems, as it provides food and oxygen for other organisms to survive. Additionally, photosynthesis helps regulate the concentration of carbon dioxide in the atmosphere, which is important for maintaining the Earth's climate.

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Answer: Anaphylaxis

Explanation:

I have a nut allergy, and this has happened to me once. The doctors also told me a lot about anaphylaxis, and I like to learn about myself.

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Here is my Answer:

A sample of gas has an initial volume of 5.6 l at a pressure of 735 mmHg. if the volume of the gas is increased to 9.4 l,  its pressure (in atm) is 0.5 atm.

given that :

The initial volume V1 = 5.6 L

The pressure P1 = 735 mmHg = 0.9 atm

The volume V2 = 9.4 L

the pressure P2 = ?

according to the Boyles law :

P1 V1 = P2 V2

P2 = (0.9 × 5.6 )/ 9.4

     =  0.5 atm

Thus, A sample of gas has an initial volume of 5.6 l at a pressure of 735 mmHg. if the volume of the gas is increased to 9.4 l,  its pressure (in atm) is 0.5 atm

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All of the cycles mentioned have an atmospheric component. All four cycles are interconnected and play important roles in maintaining the health and balance of the Earth's ecosystems.

The nitrogen cycle involves the conversion of atmospheric nitrogen gas into forms that plants can use, through processes like nitrogen fixation and denitrification. The carbon cycle involves the exchange of carbon between the atmosphere, oceans, and land through processes like photosynthesis and respiration. The water cycle involves the movement of water between the atmosphere, land, and oceans through processes like evaporation, precipitation, and transpiration. While the phosphorus cycle does not have a significant atmospheric component, it does involve the movement of phosphorus through terrestrial and aquatic ecosystems, and is important for the growth and development of plants.

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Answer:

Land plants are also known as Embryophytes. Embryophytes are complex multicellular eukaryotes with specialized reproductive organs. The name derives from their innovative characteristic of nurturing the young embryo sporophyte during the early stages of its multicellular development within the tissues of the parent gametophyte.

Explanation:

Answer:

there used for mountains , wait I'm just trynna get points ya feel me

Explanation:

In a Lewis acid-base reaction, the base donates a(n) electron pair to form a new coordinate dative bond between the base and the acid.

In this type of reaction, the Lewis acid is a species that can accept an electron pair, and the Lewis base is a species that can donate an electron pair. The base donates its electron pair to the vacant orbital of the acid, resulting in the formation of a coordinate bond.

The electron pair donated by the base forms a bond with the Lewis acid, creating a new bond between the base and the acid. This coordinate bond is also known as a dative bond because both electrons in the bond come from the base.

Overall, in a Lewis acid-base reaction, the base donates an electron pair to the Lewis acid, resulting in the formation of a new coordinate bond between the base and the acid.

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Answer:

2.688 L

Explanation:

Here we use the formula:

(P1 x V1)/T1  =  (P2 x V2)/T2

where;

P1 = 417 mm of Hg

P2 = 576 mm of Hg

V1 = 4.78 L

V2 = X L

T1 = 497 K

T2 = 386 K

substituting the values in the formula:

(417 x 4.78)/497 = (576 x X)/386

1993.26/497  = 576X/386

(4.01058 x 386)/576 = X

2.688 L = X

The  new volume of the cylinder when pressure increases to 576 mm Hg

and temperature decreases to 386 K is 2.688 liters.

Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.

There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .

It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.

Here we use the formula:

(P₁x V₁)/T₁ =  (P₂ x V₂)/T₂

where;P₁ = 417 mm of Hg,P₂ = 576 mm of Hg,V₁= 4.78 L,V₂= X L,T₁ = 497 K,T₂ = 386 K

substituting the values in the formula:

(417 x 4.78)/497 = (576 x X)/386

1993.26/497  = 576 X/386

(4.01058 x 386)/576 = X

2.688 L = X

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78.0grams of sulfur dioxide contain 5.871×10²³ molecules.

what is mole?

The mole is a unit of measurement or the fundamental one used to calculate the amount of material present in a sample. The Avogadro constant NA is equivalent to 1 mole of a particular number.

The ratio of the supplied mass to the molar mass is used to calculate the number of mol.

mol of sulphur trioxide times the specified mass

"molar mass"

Mass = 78 grammes when given.

Sulfur trioxide's molecular weight is 80 g/mol.

78÷80 moles are present.

No. of molecules= 78 ÷80 × 6.022× 10²³

                          =5.87 ×10²³

So, in 78.00 grammes, there are 5.87×10²³ molecules of Sulphur trioxide.

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325 g of water would be need to make an 89% plutonium aqueous solution by mass, if the total solution is 3500 grams.

This problem is solved by using the concept of total mass percentage

Total mass percentage can be given as

Mass percentage = sum of mass percentage of elements in solution.

100% = 89% of plutonium aqueous solution by mass+ x V of water solution by mass

(100 - 89)% = x% of water solution by mass

11 % = x% of water solution by mass

mass percentage of water =( mass of water / mass of total solution) × 100

11 / 100 = mass of water / mass of total solution

mass of water =( 11/ 100) × 3500

= 325 g.

Thus, we concluded that 325 g of water would be need to make an 89% plutonium aqueous solution by mass, if the total solution is 3500 grams.

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If a student incorrectly identified their aldehyde and ketone and added the incorrect volume of each in the chemical reaction.

it could have a significant impact on the resulting product. Aldehydes and ketones have different chemical properties and reactivity, which can affect the outcome of the reaction. If the incorrect volume is added, it could lead to a different ratio of reactants and affect the overall yield of the product.

Additionally, the incorrect aldehyde or ketone could react differently and produce a different product altogether. It is important to accurately identify and measure the reactants in a chemical reaction to ensure the desired product is obtained.

If a student incorrectly identified their aldehyde and ketone, and added the incorrect volume of each in the chemical reaction, it could potentially affect the product of the reaction.

This may lead to a lower yield, formation of unintended by-products, or even failure to produce the desired product altogether. Proper identification and accurate measurements are crucial for successful chemical reactions.

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Opinion : I disagree recycling can help them, but it still will not clear the environment.

The speed of the particles rises with the temperature of the solid, liquid, or gas. The particles slow down with decreasing temperature.

A liquid can turn into a solid if it is cooled down far enough.

The average kinetic energy of the molecules falls as a liquid cools.

The liquid eventually turns into a solid when the quantity of heat removed is sufficient to cause the molecules to be attracted to one another.

Freezing is the process of transitioning from a liquid to a solid.

It loses thermal energy when the liquid cools. Its constituent particles therefore decelerate down and converge.

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Answer:

38.9mL are needed.

Explanation:

1st) It is necessary to calculate the number of moles of HCl that will be contained the 161.1mL of the 3.03M solution:

Now we know that the new solution will have 0.488 moles of HCl.

2nd) With the number of moles and the molarity of the original solution, we can calculate the volume of the 12.56M HCl needed:

So, 38.9mL are needed.

Answer:

frequency = 2.07 x 10¹³ Hz

Explanation:

To find the frequency of the photon, you need to use the following equation:

E = hv

In this formula,

-----> E = energy (J)

-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)

-----> v = frequency (Hz)

Since you have been given values for two of the variables (in the correct units), you can plug them into the equation and simplify to find the frequency.

E = hv                                                       <----- General Equation

E = (6.626 x 10⁻³⁴ J*s)v                           <---- Plug in Planck's Constant

1.37 x 10⁻²⁰ J = (6.626 x 10⁻³⁴ J*s)v        <----- Plug in energy (given)

2.07 x 10¹³ = v                                        <----- Divide both sides by 6.626 x 10⁻³⁴

Answer:

33 minutes

Explanation:

60 km/h = 37.28 mi/h

20/37.28 = 0.5364 h

0.5364 * 60 min = 32.2 minutes

Answer:

To adjust the substance condition, you need to ensure the quantity of molecules of every component on the reactant side is equivalent to the quantity of particles of every component on the item side. To make the two sides equivalent, you should duplicate the quantity of particles in every component until the two sides are equivalent.

Explanation:

From the given four options, the correct statement is:The average kinetic energy of their particles is the same. Option c is right.

At the same temperature, the two pieces of iron will have the same average kinetic energy of their particles. This is because temperature is a measure of the average kinetic energy of the particles in a substance. The particles in both pieces of iron have the same average kinetic energy, so they are at the same temperature.

Option A is incorrect because heat flows from a higher temperature object to a lower temperature object, not necessarily from the larger object to the smaller object.

Option B is incorrect because the total kinetic energy of the particles in the two pieces of iron will depend on their mass and temperature. It is not necessarily the same.

Option D is incorrect because potential energy is not related to temperature or heat flow. Heat flows from higher temperature to lower temperature objects, not from higher potential energy to lower potential energy objects.

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Answer:

Plate tectonics and how they effect volcanoes

Explanation:

Plate tectonics are when the plates (the seperate pieces of earth's crust)

crash into each other, being the main cause of natural disasters such as earthquakes, however the collision of two plates can push magma from the mantle into a crevice in the crust, forming a volcano.

I hope that this helped you.

Answer: both

Explanation:

Answer:

Where are the answer choices

?

Answer:

D i belive

Explanation: