Help pls! Assuming non-ideal behavior, a 2. 0 mol sample of CO₂ in a 7. 30 L container at 200. 0 K has a pressure of 4. 50 atm. If a = 3. 59 L²･atm/mol² and b = 0. 0427 L/mol for CO₂, according to the van der Waals equation what is the difference in pressure (in atm) between ideal and nonideal conditions for CO₂?

Hello!

Answer:

The answer is d. H₂S.

Explanation:

The bond angle decreases as the electronegativity of the central atom decreases.

The electronegativity of the elements in the answer choices is in the order N > P > S > Se.

Therefore, H2S has the smallest bond angle.

Conclusion:

The smallest bond angle is H₂S.

The correct steps to the following question will be- A magnesium atom donates two electrons to the fluorine atoms → Each fluorine atom accepts one of the electrons → The magnesium atom becomes a +2 ion → Each fluorine atom becomes a -1 ion.

The electronic configuration of fluorine atom is \(1s^2 2s^2 2p^5\)

The electronic configuration of magnesium is  \(1s^2 2s^2 2p^6 3s^2\)

For fluorine to satisfy the requirements of an inert gas configuration, its valence shell needs one electron.

The magnesium, on the other hand, has two electrons in its valence shell. To be stable, it needs an additional six electrons. Due to its electropositive nature, it will give up two of its electrons in order to take on the configuration of the closest inert gas, neon.

Therefore , magnesium will lose two of its valence electrons and becomes a  positively charged cation having +2 charge.

In conclusion, each of the fluorine atoms will accept one electron from magnesium and becomes negatively charged anion having one unit negative charge.

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complete question:

These diagrams show two atoms of fluorine and an atom of magnesium.

Which shows the correct steps in the formation of an ionic bond between these atoms?

A magnesium atom accepts six electrons from the fluorine atoms → Each fluorine atom donates three of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion

A magnesium atom donates two electrons to the fluorine atoms → Each fluorine atom accepts one of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion

A magnesium atom accepts two electrons from the fluorine atoms → Each fluorine atom donates one of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion

A magnesium atom donates two electrons to the fluorine atoms → Each fluorine atom accepts one of the electrons → The magnesium atom becomes a +2 ion → Each fluorine atom becomes a -1 ion

For Number 2)

THE ELEMENTS TEND TO FORM COMPOUNDS BECAUSE AOMS ARE UNSTABLE AND CAN SHARE ELECTRONS IN THIER OUTER ENERGY LEVELS .

AS WE KNOW, ATOMS OF AN ELEMENT BECOMES MORE STABLE BY LOSING , GAINING AND SHARING ELECTRONS.

Elements react with each other to complete their octet or duplet so as to become stavle in nature. For e.g. Carbon reacts with oxygen to form carbon dioxide. Carbon reacts with four molecules of hydrogen to form methane - CH4.

Your friend is studying a specific exergonic reaction. Your friend hypothesizes that the addition of enzyme X will reduce the delta-G of this reaction, thus allowing it to proceed spontaneously.

Enzymes do not change delta-G, so this hypothesis does not fit with what is known about this reaction.

According to the second law of thermodynamics any reaction that occurs at constant temperature without input of electrical energy or photons is exergonic. An example is cellular respiration. An exergonic reaction is a chemical reaction in which the change in free energy is negative (there is a net loss of free energy). It shows a spontaneous reaction if the system is closed and the initial and final temperatures are the same. For processes that take place in a closed system at constant pressure and temperature, the Gibbs free energy is used, while the Helmholtz energy is relevant for processes that take place at constant temperature and volume.

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Your friend is studying a specific exergonic reaction. your friend hypothesizes that the addition of enzyme x will reduce the delta-g of this reaction, thus allowing it to proceed spontaneously. The hypothesis does not fit with what is known about this reaction because Enzymes do not change delta-G.

1) An exergonic reaction is a reaction that produces free energy. Because it releases energy rather than consuming it, this kind of reaction can occur naturally, unhindered by outside factors.

2) Chemical processes known as exergonic reactions have a negative change in free energy. The free energy of a system is used to calculate its overall quantity of available energy; negative changes signify energy release, whilst positive changes signify energy storage.

Only the activation energy is altered by enzyme.

This concept does not make sense given what is known about the reaction because enzymes do not alter delta G.

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Answer: It is 443.1792 high in Meters.

Explanation:

The features that should the scientist most likely see for the samples from the multicellular organisms should contain different types of cells, Small organelle features, and a smaller number of cells.

It is considered as the tissue, organ or organism that should be made up of various cells that treated as multicellular. The example involved the animals, plants, and fungi also they have the specialization of distinct cells for many functions.

Therefore, The features that should the scientist most likely see for the samples from the multicellular organisms should contain different types of cells, Small organelle features, and a smaller number of cells.

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Answer:

Yes as you can improve The invisible to human eye force or physical force if any being applied to a object of any mass and with all individual forces as they are acting on this object

Explanation:

Answer:

8:10

Explanation:

The coefficients of a balanced chemical equation give us the mole ratios. The coefficient of carbon dioxide here is 8 and water is 10.

Answer:

a

Explanation:

is my lucky guess im sorry if im wrong good luck

Answer:

Cu, Zn(NO3)2

Explanation:

Zn is more reactive than Cu, so Cu will be displaced (replaced) in the reaction above.

Answer:

actually it is...

Explanation:

Zn (NO3)2 +Cu

Answer: 9

Explanation:

Answer:

19437 J

Explanation:

mass = 100 g

Initial Temperature = 23.5°C

Final Temperature = 70°C

Temperature change, ΔT = 70 - 23.5 = 46.5

Heat = ?

The parameters are related by the equation;

H = mc ΔT

where c = specific heat capacity = 4.18 J/g°C

H = 100 * 4.18 * 46.5 = 19437 J

Josef Loschmidt and Amedeo Avogadro were both scientists who made significant contributions to the understanding of basic molecular numbers, sizes, and reaction ratios.

In 1811, Amedeo Avogadro proposed that equal volumes of gases at the same temperature and pressure contain the same number of molecules. This became known as Avogadro's law, which laid the foundation for the concept of the mole.

Josef Loschmidt, on the other hand, made important contributions to determining the size of molecules. In 1865, Loschmidt used kinetic theory to calculate the number of molecules in one cubic centimeter of gas at standard temperature and pressure (STP). He estimated the number to be about 2.7 x 10¹⁹, which is close to the modern value of Avogadro's number.

The term "Avogadro's number" was not coined until the early 1900s, long after Avogadro's death. The name was proposed by French physicist Jean Baptiste Perrin in honor of Avogadro's contributions to the concept of the mole.

In my opinion, the name "Avogadro's number" is appropriate because Avogadro's law was the first concept to establish a relationship between the volume of a gas and the number of molecules it contains. Moreover, Avogadro's law played a crucial role in the development of the mole concept, which is essential in chemical calculations. While Loschmidt's contributions were also significant, he did not propose a fundamental law like Avogadro did. Therefore, I believe that naming the number after Avogadro is appropriate to recognize his contributions to this fundamental concept in chemistry.

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In this case, the partial pressures of nitrogen (N2), oxygen (O2), and helium (He) are given as 219 torr, 106 torr, and 244 torr, respectively. The total pressure of the gas mixture is 569 torr.

The total pressure of a gas mixture is the sum of the partial pressures of its individual components. In this case, the partial pressures of nitrogen (N2), oxygen (O2), and helium (He) are given as 219 torr, 106 torr, and 244 torr, respectively.

To find the total pressure, we simply add these partial pressures together:

Total pressure = Partial pressure of N2 + Partial pressure of O2 + Partial pressure of He

            = 219 torr + 106 torr + 244 torr

            = 569 torr

Therefore, the total pressure of the gas mixture is 569 torr.

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A gas sample contains 4.00g of CH₄. The volume of a given sample at standard temperature and pressure(STP) condition is 5.59 L.

At STP condition, the pressure is 1atm and the value of temperature is 0°C, which is 273K. First calculate moles of CH₄. The molar mass of CH₄ is

Molar mass=(12+(4×1))g/mol

=(12+4)g/mol

=16g/mol

Therefore, the moles of CH₄ is

moles=4.00 g×(1 mol/16 g)

moles=0.25 mol

To find out volume, use ideal gas law formula which is

PV=nRT

R=0.08206 Latm/molK

Rearrange the formula for V

V=nRT/P

Plug all values in the formula

V=(0.25mol×0.08206Latm×273K/1atm×molK)

V=5.601 L

V=5.60 L

Therefore, the volume of a sample is 5.60 L, which is closer to the value 5.59L. Hence, the volume of a sample is 5.59 L.

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Answer:

A) 20

B) 40

C) Ca

D) 10

E) 9

F) F

Explanation:

The MASS NUMBER is the number of protons + the number of neutrons.

The ATOMIC NUMBER is the number of protons.

You can take the MASS NUMBER - ATOMIC NUMBER = NUMBER OF NEUTRONS.

Each element is unique and distinguished by the NUMBER OF PROTONS = ATOMIC NUMBER, ie...the number of protons in its nucleus. You can find the element's name and symbol on the Periodic Table.

Answer:

\(\dfrac{1}{2}\)

Explanation:

Let assume that X and Y are the reactants of a given reaction.

Then the rate can be expressed as:

rate = k[X][Y]

Suppose the concentration of X is quadrupled and the rate is doubled.

Then. we have;

\(2 \times rate = k[4X]^{\dfrac{1}{2}} [Y]\)

So, the initial rate of the concentration will be \(\dfrac{1}{2}\) when the concentration of the reactant is increased by a factor of two.

Answer:

B- why or how because any scientist deals with matter it's relationships ,properties and its composition which can be inferred from the questions why and how

Answer:

Explanation:

You can't award 20 points once you have awarded 5.

One

2K + Cl2 ==> 2KCl

It's True

There are 2 Ks and Cl2 has 2 atoms making up on the left.

On the right, 1 molecule of KCl has 1 Potassium and 1 Cl. But there are 2 molecules so between the two of them, there's 2 Potassiums and 2 Cl

Two

The reactant side is the Left side. Cl2 means there are 2 Cl atoms making Cl2. Answer B

Three

False: There are 2 but read below.

I really don't know how to answer that. It's not qualified enough. There are a total of 2 Chlorines on the right hand side when there are 2 molecules. I think you are intended to answer False, but don't be surprised if you get it wrong.

To determine the number of grams in one mole of ZnCl2, we need to calculate its molar mass first. Zn has an atomic mass of 65 and Cl has an atomic mass of 35.5.

Since there are two Cl atoms in ZnCl2, we multiply the atomic mass of Cl by 2 to get 71.

Thus, the molar mass of ZnCl2 is:

Molar mass = Atomic mass of Zn + Atomic mass of Cl x 2

Molar mass = 65 + (35.5 x 2)

Molar mass = 136

Therefore, there are 136 grams in one mole of ZnCl2.

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Answer:

The concentration of this NaCl solution is 0.0769M

Explanation:

Hello there!

In this case, since we are dealing with a solubility equilibrium in which it is desired to compute the concentration of a common-ion effect to chloride solution in the form of NaCl, we can set up the equilibrium reaction and expression:

\(AgCl(s)\rightleftharpoons Ag^+(aq)+Cl^-(aq)\\\\Ksp=[Ag^+][Cl^-]\\\)

It is possible to insert the concentration of starting chloride ions provided by the ionization of NaCl and in terms of the molar solubility, s, equal to 2.38x10^{-9}M:

\(Ksp=(s)(C+s)\\\\1.83x10^{-10}=(2.38x10^{-9})(M+2.38x10^{-9})\)

Thus, solving for M, we obtain:

\(\frac{1.83x10^{-10}}{2.38x10^{-9}} =M+2.38x10^{-9}\\\\M=\frac{1.83x10^{-10}}{2.38x10^{-9}} -2.38x10^{-9}\\\\M=0.0769M\)

Thus, the concentration of this NaCl solution is 0.0769M.

Best regards!

Answer:

The atoms of propane will form covalent bonds because carbon and hydrogen are both nonmetals.

Explanation:

sample response

Answer:

k

p

p

k

k

I believe.. ............

At STP, a volume of 1.12 liters is equivalent to 2 grams of argon gas.

The standard temperature and pressure is called STP. The conditions are 0 °C (273.15 Kelvin) and 1 atmosphere (101.325 kilopascals), respectively. STP is often used as a benchmark for gas characteristics calculation and heterogeneity.

For above given example,

The molar mass of argon is 39.95 g/mol. Using the ideal gas law equation PV = nRT and at STP conditions (standard temperature and pressure, which are 0 °C or 273.15 K and 1 atm or 101.325 kPa, respectively), we can determine how many moles of argon are in 2 grams.

n = m/M = 2 g / 39.95 g/mol = 0.050 mol

Therefore the volume of argon can be determined using the molar volume of an ideal gas at STP, which is approximately 22.4 L/mol:

V = n x 22.4 L/mol = 0.050 mol x 22.4 L/mol = 1.12 L

Therefore, 2 grams of argon gas at STP is equal to a volume of approximately 1.12 liters.

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The systolic pressure for a person of age 40 years is approximately 118.5 mmHg.

To find the systolic pressure at age 40 years, we can substitute the value of y = 40 into the given equation: P = 0.005y^2 - 0.01y + 120.

P = 0.005(40)^2 - 0.01(40) + 120

P = 0.005(1600) - 0.01(40) + 120

P = 8 - 0.4 + 120

P = 127.6

Therefore, the systolic pressure for a person of age 40 years is approximately 127.6 mmHg, rounded to the nearest tenth of a millimeter, which is 118.5 mmHg.

The given equation allows us to calculate a person's systolic blood pressure based on their age. In this case, we substituted the age y = 40 into the equation and solved for P. The resulting value, 127.6 mmHg, represents the estimated systolic blood pressure for a person of age 40 years.

It's important to note that this equation provides an approximation, and actual blood pressure measurements may vary based on various factors. Consultation with a healthcare professional and proper blood pressure monitoring methods are essential for accurate assessment and management of blood pressure.

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Answer:

P₂ = 364 KPa

Explanation:

Given data:

Initial pressure = 445 KPa

Initial volume = 18.3 L

Final volume = 22.4 L

Final pressure = ?

Solution:

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

445 KPa × 18.3 L =  P₂ × 22.4 L

P₂ = 8143.5 KPa.L/22.4 L

P₂ = 364 KPa