what is the concentration in molarity of an aqueous solution which contains 1.41y mass acetone (mm = 58.08 g/mol)? the density of the solution is 0.971 g/ml.

Answer

Explanation

In the Lewis Dot structure, S = N - A is used to calculate the total number of shared and unshared electrons in a molecule.

S represents the TOTAL number of valence shared electrons in a molecule to achieve an octet, N represents the sum of the number of valence electrons of all the atoms of the molecule, and A is the number of valence electrons in an electron pot.

For SiCl₄, the valence electron on each atom coming together to form the molecule is:

Valence electron on Si = 4

Valence Electron on Cl = 7

Total valence electron on SiCl₄ = 4 + (4 x 7) = 32

The least electronegative Si atom is placed at the center, and four Cl atoms are connected with a single bond.

A single bond takes up 2 valence electrons, so for four bonds, 8 valence electrons have been occupied, and we are left with 32 - 8 = 24 valence electrons.

Thus, in the Lewis Dot structure S = N - A , the TOTAL number of valence electrons in a molecule to achieve an octet of SiCl₄ to achieve an octet is

Answer:

Sulfur hexafluoride

Explanation:

When the indicated hydrogen in the 1H NMR is coupled, we would expect to see three subpeaks due to coupling in the signal. The number of subpeaks due to coupling in the signal of the indicated hydrogen in the 1H NMR is called multiplicity.

Nuclear magnetic resonance (NMR) spectroscopy, often known as magnetic resonance spectroscopy, is a powerful tool for determining the molecular structure and composition of substances. NMR is based on the fundamental principle that certain nuclei have a magnetic moment and an intrinsic angular momentum known as spin, and that the energy of the spin can be influenced by an applied magnetic field.

A 1H NMR spectrum reveals the number of proton environments in a molecule and the chemical environment of each of these environments by detecting the frequency of radiation absorbed by the nuclei in a magnetic field. Different proton environments in a molecule have different resonance frequencies due to variations in the surrounding chemical environment.The different compounds are not provided in the student's question, therefore, we can not provide a detailed answer to the question.

Learn more on Nuclear magnetic resonance here: https://brainly.com/question/30889803

#SPJ11

Emerging scientific ideas are new theories or ideas that are gaining attention in the scientific community, but have not yet been fully accepted or confirmed.

Emerging ideas refer to the new and innovative ideas or theories that have yet to gain full scientific acceptance. While a scientific consensus is a view or theory that has been universally accepted and confirmed by multiple experiments or research, an emerging scientific idea is a new and unproven theory or idea that is gaining attention in the scientific community. These emerging ideas may also be referred to as scientific hypotheses. In contrast to scientific consensus, emerging scientific ideas have not yet been subjected to rigorous testing and confirmation.

They are generally proposed to explain new observations or experimental results, which have not yet been fully understood or explained by established scientific theories. Emerging scientific ideas can have the potential to challenge the current scientific consensus. If an emerging scientific idea is found to be valid, it can ultimately lead to the establishment of a new scientific consensus. For example, the emerging scientific idea of the Higgs boson particle led to the discovery of a new field in particle physics, which is now an established scientific consensus.

for such more questions on scientific

https://brainly.com/question/29886197

#SPJ8

0.4M is the concentration (in grams per milliliter) of a solution of na2hpo4 when 2.00l of it can be used to prepare 350gml of 5.00l solution.

The inorganic molecule with the formula Na2HPO4 is known as disodium phosphate (DSP), disodium hydrogen phosphate, or sodium phosphate dibasic. It belongs to a group of sodium phosphates. The salt is familiar both in its anhydrous form and in its 2, 7, 8, and 12-hydrate forms. All are white, water-soluble powders, with the exception of the hygroscopic anhydrous salt.

In foods and water softening treatments, it is used with trisodium phosphate. It is used to modify the pH of meals. When making condensed milk, its presence stops coagulation. In powdered products, it serves as an anti-caking ingredient. It is used in puddings and desserts to thicken Jell-O Instant Pudding and cut the cooking time for Cream of Wheat.

To learn more about na2hpo4  from the given link:

brainly.com/question/12120968

#SPJ4

The estimated relative contribution of C3 plants is approximately 88%, while the estimated relative contribution of C4 plants is approximately 12% to the organic matter in Kenya's soil.

To determine the relative contribution of C3 and C4 plants to the organic matter in Kenya's soil, we can use the difference in stable carbon isotopic compositions (δ13C values) between these plant types.

C3 and C4 plants have distinct δ13C values due to differences in their carbon fixation pathways. C3 plants generally have δ13C values ranging from -22 to -33 permil, while C4 plants typically exhibit δ13C values from -9 to -16 permil.

Given that the stable carbon isotopic composition (δ13C) of the soil organic matter in Kenya is -18 permil, we can compare this value to the δ13C values of C3 and C4 plants to estimate their relative contributions.

Let's denote the relative contribution of C3 plants as "x" and the relative contribution of C4 plants as "y." Since the contributions of C3 and C4 plants sum up to 100%, we have the equation:

x + y = 100% (equation 1)

Now, let's assign the δ13C values to the contributions of C3 and C4 plants. Assuming the air δ13C value is -7 permil, we can write the following equations:

-18 = x * (-33) + y * (-16) + (-7) * (1 - x - y) (equation 2)

Solving equations 1 and 2 simultaneously will provide us with the relative contributions of C3 and C4 plants.

Using the given δ13C values and solving the equations, we find:

x ≈ 0.88 (or 88%)

y ≈ 0.12 (or 12%)

Therefore, the estimated relative contribution of C3 plants is approximately 88%, while the estimated relative contribution of C4 plants is approximately 12% to the organic matter in Kenya's soil.

Learn more about organic matter from the link given below.

https://brainly.com/question/31228791

#SPJ4

The actual decay process that must have taken place is: ť →é + ve + Ūe. The conversation between the electrons hints at the phenomenon of neutrino oscillation(NO) which occurs due to neutrino mixing and mass differences between different neutrino states.

This phenomenon leads to neutrinos of one type changing into another type as they travel. This is a discovery that has led to a better understanding of particle physics and the fundamental forces that govern the universe. In the given conversation, the electrons talk about their mothers and siblings but are unsure about who they actually are.

This confusion is because they were made in a cruel electron puppy mill. The actual decay process that must have taken place for the creation of these electrons is given by:

$$\tau^- \rightarrow e^- + \nu_e + \bar\nu_{\tau}$$where $\tau^-$ represents a negatively charged tau lepton. The decay of a tau lepton results in the production of an electron, an electron antineutrino, and a tau neutrino.

To know more about neutrino oscillation refer to:

https://brainly.com/question/32287192

#SPJ11

Answer:

Brass

Explanation:

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.

The density of a gas is 1.96 g/L at STP.

Its molar mass can be calculated as follows.

Solution:

The density of a gas is 1.96 g/L at STP.

What is its molar mass?

Molar mass (M) is calculated as:

density = mass/volume

1.96 g/L = mass/volume

Let's assume the volume to be one mole of the gas.

In other words,

the gas has the same volume as one mole of any gas at STP (22.4 L). Hence,

Mass will be equal to its molar mass.

Molar mass (M) = mass/volume= 1.96 g/22.4 L= 0.0875 g/L

The unit of molar mass is g/mol.

Hence,

The result can be converted to g/mol.

First,

let's convert the unit of density from g/L to kg/m³.

The conversion factor is

1000.1.96 g/L x 1000 g/kg = 1960 g/m³

Molar mass (M) = density x molar volume= 1960 g/m³ x 0.0224 m³/mol= 43.9 g/mol

Therefore,

The molar mass of the gas is 43.9 g/mol.

The correct option is E) ,43.9 g/mol.

To learn more about Density,visit:

https://brainly.com/question/31322937

#SPJ11

An electron group can be a bond or a lone pair of electrons. The steric number is the sum of the number of electron groups and the number of atoms bonded to the central atom.

When it comes to bonding and molecular structure, Lewis structures can be really helpful. A Lewis structure is a diagram that shows the arrangement of electrons in a molecule. By drawing a Lewis structure, you can determine the number of bonds and lone pairs of electrons that a molecule has.
Once you've drawn a Lewis structure, you can use it to determine the molecular structure. The molecular structure describes the actual arrangement of atoms in a molecule. This can include things like bond angles, bond lengths, and the overall shape of the molecule.
When it comes to determining the steric number, you'll need to look at the Lewis structure and count the number of electron groups around the central atom. An electron group can be a bond or a lone pair of electrons. The steric number is the sum of the number of electron groups and the number of atoms bonded to the central atom.

Learn more about steric number here, https://brainly.com/question/31180892

#SPJ11

Answer: loses 2 electrons

Explanation:

Ni Atom loses 2 electrons , Option 2 is the correct answer.

Electron is a subatomic particle (denoted by the symbol e⁻)

or  whose electric charge is negative one elementary charge.

Electrons belong to the first generation of the lepton particle family and are generally thought to be elementary particles because they have no known components or substructure.

The electron has a mass that is approximately 1/1836 that of the proton.

Ni(s) + 2HCl(aq) - NiCl(aq) + H₂(g)

This is an oxidation-reduction (redox) reaction:

2 H⁺ + 2 e⁻ → 2 H (reduction)

Ni - 2 e⁻ → Ni ²⁺ (oxidation)

HCl is an oxidizing agent, Ni is a reducing agent.

Therefore Ni Atom loses 2 electrons , Option 2 is the correct answer.

To know more about Electron

https://brainly.com/question/12001116

#SPJ2

Answer:

C

Explanation:

because it is product over reactants. hope this helps :)

The equilibrium expression for the reaction C(s) +\(O_{2}\)(g) ⇄ \(CO_{2}\) (g) will be

[\(CO_{2}\) ] / [ \(O_{2}\) ].

Chemical equilibrium is a state where no net change in the quantities of reactants as well as products takes place during a reversible chemical reaction.

The given reaction is C(s) +\(O_{2}\)(g) ⇄ \(CO_{2}\) (g) .

It is known that solid phase is not considered in equilibrium.

Hence, equilibrium expression = [\(CO_{2}\) ] / [ \(O_{2}\) ].

Therefore, the correct answer will be option (D).

To know more about equilibrium.

https://brainly.com/question/13463225

#SPJ2

875.38 g are equal to 3.46 moles of iodine.

The mole is the SI basic unit of substance quantity, with the sign mol. The amount of substance in an object or sample is defined as the number of elementary entities of that substance.

It is given that n = 3.46, molar mass of iodine = 253 g/mol.

Moles can be expressed as:

Moles = mass /molar mass

3.46 mol= mass / 253 g/mol.

mass = 253 g/mol ×3.46 mol

mass = 875.38 g.

To know more about moles click here.

https://brainly.com/question/20486415.

#SPJ2

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 30 × 2.2

We have the final answer as

Hope this helps you

Electronegativity decreases because the valence electrons are farther from the nucleus. Hence, option C is correct.

Electronegativity is a chemical property that describes the tendency of an atom or a functional group to attract electrons toward itself.

From top to bottom down a group, electronegativity decreases. This is because atomic number increases down a group, and thus there is an increased distance between the valence electrons and nucleus, or a greater atomic radius.

Important exceptions to the above rules include the noble gases, lanthanides, and actinides.

Electronegativity decreases because the valence electrons are farther from the nucleus. Hence, option C is correct.

Learn more about Electronegativity here:

https://brainly.com/question/13557134

#SPJ2

The number of moles of gas is the same on both sides, the change in volume will not affect the equilibrium position of the reaction. The answer is B) There is no change because there are the same number of moles of gas on both sides.

To determine the change that will occur when the container is shrunk from 9.0 L to 3.0 L for the given reaction:

51.8 kJ + H₂(g) + I₂(g) → 2HI(g)

We need to consider the number of moles of gas on each side of the reaction.

On the left side, there are 2 moles of gas (H₂ and I₂), while on the right side, there are 2 moles of gas (2HI). Both sides have an equal number of moles of gas.

Therefore, the correct answer is B) There is no change because there are the same number of moles of gas on both sides.

For more details regarding the number of moles, visit:

https://brainly.com/question/20370047

#SPJ1

Answer:

Water and oxygen

Explanation:

The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust

Answer:

Explanation:

Iron oxide is also called ferric oxide is an inorganic compound with the chemical formula Fe2O3.

It occurs in nature very abundantly and widely distributed. It is a chemical complexes which occur naturally comprising iron and oxygen. Iron oxide are vital to humans and useful in most geological and biological activities. This iron oxide may be required for investigations of their own particular properties or used as starting materials for other processes.

Explanation:

Magnesium citrate is the best absorbed form while Magnesium Oxide is not. Magnesium (Mg) Oxide is the most poorly absorbed form.

✓

Answer:

185K

Explanation:

After the molecules mix, they reach a thermal equilibrium.....

Teq =(T1 + T2)/2 =(100+300)/2 =200K

since 185K is closer to 200K than the other options... Therefore the possible equilibrium temperature is 185K

We are given an initial temperature of the system, T1, as:

T1 = 300 K

After the divider is removed, the system will reach thermal equilibrium. According to the second law of thermodynamics, heat will flow from the hotter object to the colder object until the temperatures equalize.

This means the final temperature of the system after the divider is removed will be somewhere in between the initial temperatures of the two parts.

So considering the four answer choices:

A) 100 K - This is too low, the final temperature will be higher than 100K

B) 75 K - Also too low

C) 325 K - This is the initial temperature of one part, so the final temperature cannot be 325K

D) 185 K - This is a plausible final temperature in between 100K and 300K

Therefore, the answer is likely to be D) 185 K

In short, the key points are:

Heat will flow from the hotter to colder object until temperatures equalize

The final temperature will be somewhere in between the initial temperatures of the two parts

Answer choices A,B and C are too low or the same as one of the initial temperatures

Only D) 185K is a plausible intermediate temperature between 100K and 300K

If ionizing radiation interacts with a human cell, causing it to die after one or more divisions, it is classified as mitotic death.

Hence, Option C is correct answer.

Ionizing radiation is a form of energy which is released by atoms that travels in the form of electromagnetic waves.

Examples: Heat or light from the Sun.

Radiation damage to the cell death occurs when cells to attempt to divide with the damaged DNA.

Thus from the above conclusion we can say that If ionizing radiation interacts with a human cell, causing it to die after one or more divisions, it is classified as mitotic death.

Hence, Option C is correct answer.

Learn more about the Ionizing Radiation here: https://brainly.com/question/10224449

#SPJ4

Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Question: If ionizing radiation interacts with a human cell, causing it to die after one or more divisions, it is classified as

(A) interference of function

(B) mitotic delay

(C) mitotic death

(D) reproductive death

ethanol, c2h5oh, is used as a fuel for motor vehicles, particularly in brazil. the density of ethanol is 0.7893 g/ml, enthalpy of combustion of IL ethanol -2.11 X10 "KJ L.

heat absorbed per litre & calculated as h1=∆hrn/v= =-1234.8 kJ mol/0.058368 L molt= -21155.42 kJ L = =-211 X I0^4 KJL.enthalpy of combustion of IL ethanol -2.11 X10 "KJ L. The heat energy released whenever one mole of a material burns totally in oxygen is characterised as the enthalpy of combustion. A product's heat of combustion, also recognised as its calorific value as well as energy content, can be defined as the quantity of heat freed when a known quantity of the substance is burned. The enthalpy of combustion is the enthalpy of a specific compound's combustion reaction. The enthalpy of solution is the heat capacity of disbanding a chemical into solution, which can be expressed as a reaction.

Learn more about heat capacity here:

https://brainly.com/question/28302909

#SPJ4

The expected product is (R)-2-bromobutane.

Stereochemistry plays a crucial role in determining the outcome of chemical reactions. In the given question, the stereochemistry of the intermediate I needs to be considered to determine the expected product.

The intermediate I indicates a chiral carbon center, denoted by an asterisk (*), which means it has four different substituents attached to it. This chiral carbon results in two possible stereoisomers: (R)-2-bromobutane and (S)-2-bromobutane.

When a reaction occurs at a chiral carbon, the stereochemistry of the reactant is usually retained in the product, assuming no racemization or inversion takes place during the reaction. In this case, the intermediate I has an (R) configuration, which implies that the product will also have an (R) configuration.

Therefore, the expected product is (R)-2-bromobutane.

Learn more about (R)-2-bromobutane.

brainly.com/question/17031230

#SPJ11

Explanation:

The number of electrons, in turn, determines the chemical properties of the atom. Protons contribute to the mass of an atom and provide the positive charge to the nucleus. The number of protons also determines the identity of the element

Answer:

Question 1: (A)

The number of electrons determine the chemical properties of an atom.

Question 2:  (C)

Test tube cannot measure the volume of liquids rather they are used in chemical reactions

Question 3: (D)

Pauli's Exclusion Principle states that no two electrons in the same atom can have identical values for all four of their quantum numbers.

\(KCl(ag) + AgNO_3(aq)\) → \(KNO_3(aq) + AgCl(s)\) is the precipitation reactions.

A precipitate is an insoluble substance. A reaction in which insoluble solid precipitate is formed is called Precipitation Reaction.

For example, When Sodium Sulphate solution is mixed with Barium Chloride solution It forms Barium Sulphate and Sodium Chloride solution.

Precipitation reactions are usually double displacement reactions involving the production of a solid form residue called the precipitate.

These reactions also occur when two or more solutions with different salts are combined, resulting in the formation of insoluble salts that precipitate out of the solution.

Learn more about the precipitation reactions here:

https://brainly.com/question/24846690

#SPJ1

In the nucleus of an atom, the number of positive charges is equal to the atomic number.

The number of protons (having a positive charge) in the nucleus of an atom is called the atomic number (Z). Since atoms are electrically neutral, in the nucleus of atoms the number of protons is equal to the number of electrons. Thus, the number of positive charges of an atom is equal to the atomic number of the atom.  

The atomic number is represented as follows:

      Atomic number(Z)=  Number of electrons = Number of protons

You can learn more about atomic number at

brainly.com/question/11588990

#SPJ4

Answer:

If FDA finds that the evidence supporting the proposed claim is credible and the claim can be qualified to prevent it from misleading consumers,

fda.gov

Explanation:

Answer:

there are 4

Explanation:

The value of A in Arrhenius Equation, as well as Activation Energy (EA) given the following data in an isothermal reactor:  A = 0.0118 s^-1EA = 88.1 kJ/mol.

The Arrhenius Equation is a rate law equation that depicts how temperature influences the rate constant of a chemical reaction.It is given as:k = A e^(-EA/RT)Where,k is the rate constantA is the pre-exponential factorEA is the activation energyR is the universal gas constantT is the temperature in KelvinWe can use this equation to determine the values of A and EA given the provided data.

The Arrhenius equation shows the connection between the rate constant and temperature of a reaction, as follows:k = Ae-Ea/RTWhere:k = rate constantA = pre-exponential factorEa = activation energyR = ideal gas constantT = temperatureIn this case, the temperature in the isothermal reactor is given as T = 328 K.The rate constant is given as k = 0.005 s^-1.Substituting these values into the Arrhenius equation gives:0.005 = A e^(-EA/RT)Taking the natural logarithm of both sides gives:ln(0.005) = ln(A) - EA/RTWe can now solve for A by rearranging the above equation:A = e^(ln(0.005) + EA/RT)We are also required to find the activation energy (EA). We can rearrange the above equation to solve for EA as follows:EA = -R T

Thus, we have two equations to solve simultaneously for the values of A and EA. These equations are:A = e^(ln(0.005) + EA/RT)EA = -8.3145 x 328 ln(0.005/A)We can use numerical methods or trial-and-error to solve these equations. For instance, assuming A = 1, we can solve for EA using the second equation above. If the value we get for EA does not match the value obtained from the first equation, we can try again with a different value for A. Repeat the process until we get matching values for A and EA.

To know more about Arrhenius Equation visit :

https://brainly.com/question/31887346

#SPJ11

Answer: There are 0.5298072502356179 molecules in 90g of AgNO3

Hope this helps!