the enantiomer of thalidomide that causes developmental defects is______

The number of moles of atoms in a sample is proportional to the number of atoms in the sample, which is proportional to its mass. However, because a domestic cat's mass.

is made up of many various types of atoms and molecules, such as water, fat, protein, and other organic and inorganic chemicals, identifying the precise amount of moles of atoms in the cat would need a complete chemical investigation. The number of moles of atoms in a sample is proportional to the number of atoms in the sample, which is proportional to its mass. However, because a domestic cat's mass. To calculate the number of moles of a material, first find its molecular weight and then divide the mass of the substance by the molecular weight. The molecular weight is the total of all the atomic masses in the molecule.

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12.50 moles of propane react with oxygen, so moles of carbon dioxide will be produced is 37.5 moles.

The reaction of propane with oxygen:

C₃H₈ + O₂ → CO₂ + H₂O (not yet equal)

Balance the reactions by adding the coefficients, to equalize the number of each atom on the left and the right.

                                     C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Use the ratio of the coefficients to determine the moles of each gas.

Calculating the moles of CO₂ that will be produced if 12.50 moles of propane (C₃H₈):

Moles of CO₂ gas = CO₂ coefficient/propane coefficient x (propane moles)

Moles of CO₂ gas = 3/1 x (12.50)

Moles of CO₂ gas = 37.5 moles

So, the moles of CO₂ that will be produced is 37.5 moles.

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The CS2 Lewis structure has sixteen valence electrons. The center of this arrangement should contain carbon, the least electronegative atom. Because some atoms do not have complete octets, molecules like BeCl2 and BCl3 are referred to as electron deficient.

The perimeter of something like the center is surrounded by positively charged electrons. Scientists may discover it difficult to observe them because of how swiftly they revolve.

The negatively charged components of an atom are known as electrons. All of an atom's electrons combine to form a negative charge that counteracts the positive charge of the protons in the atomic nucleus.

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Atomic mass of oxygen is 16.

What is Atomic mass?

Atomic mass is the mass of an atom of a chemical element, expressed as the relative mass of a single atom of the element. It is the total mass of protons, neutrons, and electrons in the nucleus of an atom, and is usually expressed in atomic mass units (amu). Atomic mass is an important factor in determining the physical and chemical properties of an element, and is used in many calculations related to atomic structure, reactions, and physical and chemical properties of materials. It is also a measure of the total energy of an atom, and is related to the mass-energy equivalence of Einstein's Theory of Relativity. Atomic mass is determined by the number of protons and neutrons in the nucleus of an atom, and is affected slightly by the number of electrons in the atom.

Therefpre, Atomic mass of oxygen is 16.

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Hector is recognized as a legitimate hero and a fallible yet upright mortal who, in the end, desired peace and gave selflessly to himself and his people instead of for glory or because of rage. Please use the code underneath to acknowledge this web page as the primary material of any content you use from in this page within your own work.

Greek mythology is rife with tales of monsters and gods, which contributes to myths' allure and the durability of their propagation among individuals from all walks and life around the world. While many Greek deities, including Zeus, Hera, Apollo, and Athena, are well-known,

Despite his brother, Hector isn't frequently as well recognized. Hector had no heavenly capabilities, nevertheless his life and demise had great significance. Instead, he matured as a mortal through training and experience in life, eventually to become the greatest of Troy's soldiers. He was reportedly revered both the Greeks and the Romans.

When the Greeks landed at Troy, Hector assumed command of the Trojan Army notwithstanding the his reluctance to engaging in battle with them.

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Molecular Mass liquid methanol. CH3OH has to have a molar mass of 32.04186 g/mol. Calculating ounces For using protons or methanol grammes of methanol Calculation of the molecular weight: 12.0107 + 1.0794*3 + 15.9994 + 1.0794 ›› Composition by percentages each element.

The quantity is in kilograms per mole. Each element has a definite characteristic known as molar mass; for instance, water has a molar mass of approximately 18 g/mol. Furthermore, using the formula, our calculator can determine the mass of materials users really ought to add too your mixture in order to reach the appropriate molar concentration.

CH3OH's number of moles is 32.04186 g/mol.

Estimating approximate molecular weight

12.0107 + 1.00794*3 + 15.9994 + 1.00794

G/mol units are really the place to start for estimating molar mass. when calculating out such a chemical compound's molecular weight.

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According to the information provided, the percent yield of the reaction is 83.3%.

Percent yield is defined as the ratio of actual yield to the theoretical yield multiplied by 100. If the actual and theoretical yield are same then the percent yield is 100%.If actual yield is less than the theoretical yield then the percent yield is less than 100%.Reason of this condition arising is the incompletion of reaction or loss of sample during recovery process.

In cases where percent yield is over 100% it indicates that more sample is recovered than the predicted amount.The percent yield for the given reaction is  50/60×100= 83.3 %.

Thus, the  percent yield of the reaction is 83.3%.

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At room temperature there will strong intermolecular force in the ionic compound which reduce the solubility of the salt in water. By heating the solution, the solubility can be increased.

Salinity of water is the concertation of the salt per unit volume of water. It can be expressed in g/ml or g/l or ppm as well.

Solubility of a salt is the fraction of its concertation that can be dissolved in a solvent at a particular temperature. For some ionic compound like NaCl, the intermolecular force is stronger at normal temperature.

This force can be reduced by heating the solution and thereby the solvent-solute interaction can be improved, result in better solubility. This in turn increase the salinity of water.

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Most Cl- and SO42- salts are soluble in water, meaning they dissolve and form a solution.

The solubility of salts in water is influenced by several factors, including the charge and size of the ions, temperature, and pressure. In general, most Cl- (chloride) and SO42- (sulfate) salts are highly soluble in water, meaning they dissolve and form a solution.

This is because Cl- and SO42- ions have a relatively low charge density and are small in size, allowing them to easily interact with water molecules and dissolve.

Most Cl- and SO42- salts are soluble in water, meaning they dissolve and form a solution.

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The longest wavelength and energy of light that is generally able to break a chemical bond depends on the strength of the bond and the nature of the bond being broken.

What is wavelength?

Wavelength is a term used in physics to describe the distance between two peaks (or troughs) in a wave. In the context of electromagnetic radiation, such as light, the wavelength is the distance between two consecutive peaks (or troughs) of the wave, and it is usually expressed in units of nanometers (nm), angstroms (Å), or micrometers (µm).

Generally, the bond energy of a chemical bond can be determined by its bond length, bond angle, and the electronegativity difference between the atoms involved in the bond.

In general, covalent bonds, such as those found in organic molecules, have bond energies in the range of 100-500 kJ/mol. To break these bonds, light with wavelengths in the UV region of the spectrum and energies in the range of 10-100 kJ/mol is typically required.

Ionic bonds, such as those found in salts, have higher bond energies, in the range of 400-1000 kJ/mol. To break these bonds, light with wavelengths in the visible or UV region of the spectrum and energies in the range of 50-200 kJ/mol is typically required.

The ability of light to break chemical bonds is related to the photon energy of the light. Photons with higher energies have the ability to break chemical bonds and cause chemical reactions.

The longest wavelength and lowest energy of light that is capable of breaking a chemical bond depends on the strength of the bond and the nature of the bond being broken.

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The number of oxygen atoms are in each formula unit of barium hydroxide are two.

We have a barium hydroxide chemical compound which is made up of one atom of barium, two atoms of hydrogen, and two atoms of oxygen. The chemical or molecular formula of Barium Hydroxide is Ba(OH)₂. The chemical formula always helps to determine the ratio of elements present in it . Here, in one mole of barium hydroxide has one mole of barium atom, two mole of hydrogen atoms and two mole of oxygen atoms. Hence, the number of oxygen atoms in one unit of barium hydroxide is 2.

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Complete question:

The chemical formula for barium hydroxide is: Ba(OH)₂. how many oxygen atoms are in each formula unit of barium hydroxide?

If you have 1.0 moles of each compound, the compound with the greater mass is KF

Mass = moles x mass molar

Mass molar NBr₃ = 253.7187 g/mol

Mass molar  H₃PO₄ = 97.995182 g/mol

Mass molar Fel₃ =436.55841 g/mol

Mass molar KF =58.0967032 g/mol

Therefore, the compound with the higher mass, if you have 1.0 moles of each, is KF.

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The vapor pressure of a solution is the pressure exerted by the vapor above the solution. The vapor pressure of a solution depends on the concentration of the solute in the solution. The lower the vapor pressure, the more concentrated the solution is.

Explanation:

In order to decrease the vapor pressure of a solution to 22.0 torr, we need to find the amount of glucose that needs to be dissolved in 100.0 g of water. We can use the relation between the vapor pressure of the solution and the concentration of the solute in the solution to solve this problem.

The vapor pressure of a solution is proportional to the mole fraction of the solute in the solution. The mole fraction of a solute in a solution is defined as the ratio of the number of moles of solute to the total number of moles of solute and solvent in the solution.

Let's call the mole fraction of glucose in the solution x. Then, the mole fraction of water in the solution is 1 - x. The vapor pressure of the solution is given by:

P = P° H2O x + P° glucose (1 - x)

where P° H2O is the vapor pressure of pure water (23.5 torr) and P° glucose is the vapor pressure of pure glucose (which is negligible compared to the vapor pressure of water).

We know that the vapor pressure of the solution is 22.0 torr and the mole fraction of glucose in the solution is x. So, we can write:

22 = 23.5 x + 0 (1 - x)

Simplifying the above equation, we get:

22 = 23.5 x

x = 22/23.5 = 0.939

The mole fraction of glucose in the solution is 0.939. This means that 0.939 moles of glucose are present in 1.939 moles of glucose and water in the solution.

We know that the mass of water in the solution is 100.0 g. So, we can calculate the number of moles of water in the solution as:

n = m/M

where m is the mass of water in the solution, M is the molar mass of water (18.02 g/mol), and n is the number of moles of water in the solution.

n = 100.0/18.02 = 5.551 moles

The number of moles of glucose in the solution is given by:

n = 0.939 x n

n = 0.939 x 5.551 = 5.20 moles

Finally, the mass of glucose in the solution is given by:

m = n x M

where M is the molar mass of glucose (180.2 g/mol).

m = 5.20 x 180.2 = 939.44 g

Thus, 939.44 g of glucose would need to be dissolved in 100.0 g of water to decrease the vapor pressure of the solution to 22.0 torr.

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The initial pH of the buffer solution prepared from NH4NO3 and NH3 is 8.33. After dilution with water, the pH decreases and becomes closer to 7.0, the neutral pH.

A buffer solution is a solution that can resist changes in pH when small amounts of an acidic or basic substance are added to it. Buffer solutions are used in various applications such as biological systems, chemical analysis, and industrial processes.

pH of Buffer Solution Prepared from NH4NO3 and NH3:

The buffer solution can be prepared by mixing a weak base (NH3) with its conjugate acid (NH4NO3). The initial pH of the buffer solution can be calculated using the Henderson-Hasselbalch equation:

pH = pKa + log([NH3]/[NH4NO3])

where pKa is the acid dissociation constant of the conjugate acid and [NH3] and [NH4NO3] are the molar concentrations of NH3 and NH4NO3, respectively.

Given, the molarity of NH3 = 0.15 M and the molar mass of NH4NO3 = 80.04 g/mol, the molarity of NH4NO3 can be calculated as follows:

Molarity = Mass/Volume x Molar Mass = 5.15 g/0.10 L x 80.04 g/mol = 40.70 M

Therefore, the initial pH of the buffer solution can be calculated as follows:

pH = 9.25 + log(0.15/40.70) = 8.33

New pH after dilution with water:

When the buffer solution is diluted with pure water, its molar concentration decreases, and thus, its pH also changes. However, the change in pH can be minimized by using a large buffer capacity, which is defined as the amount of acid or base that can be added to a buffer solution without causing a significant change in its pH.

Since the buffer capacity is proportional to the concentration of the buffer components, diluting the buffer solution with water decreases its buffer capacity and leads to a significant change in its pH. The new pH after dilution with water can be estimated using the initial pH and the dilution factor.

Given, the final volume of the buffer solution = 5.00 × 102 mL, the dilution factor can be calculated as follows:

Dilution Factor = Final Volume/Initial Volume = 5.00 × 102 mL/0.10 L = 5000

Since the molarity of the buffer components decreases by a factor of 5000, the new pH of the buffer solution can be estimated to be close to 7.0, which is the neutral pH.

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[n] has 2 subsets that contain exactly one of the elements 1 and 2. These subsets are {1} and {2}.

A subset is a collection of elements from a larger set, such that all elements of the subset are also elements of the larger set. Every set is considered a subset of itself. In other words, a subset is a smaller set that is fully contained within a larger set.

For example, consider the set A = {1, 2, 3}. The subsets of A are:

The empty set, denoted as {} or Ø, is a subset of A (since every element of Ø is also an element of A)

{1} is a subset of A

{2} is a subset of A

{3} is a subset of A

{1, 2} is a subset of A

{1, 3} is a subset of A

{2, 3} is a subset of A

{1, 2, 3} is a subset of A, and is equal to A itself.

So, in total, there are 2³ = 8 subsets of A.

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The element has an average atomic mass of 207.21 amu, and it is called lead (Pb). LEAD is the element whose average atomic mass is this value (207.21 amu) (Pb).

HOW TO DETERMINE AN ELEMENT'S AVERAGE ATOMIC MASS: The relative atomic masses of all an element's isotopes are added up to determine the element's average atomic mass. The isotopes of an element have the following relative abundances and masses, according to this query: mass 203.973 amu - 1.40 percent. 2. mass 205.9745 amu—24.10%. 3. mass 206.9976 amu - 22.10%. 4. mass 207.9766 amu, a 52.40% decrease. The next step is to divide each percentage abundance by 100 to get its decimal equivalent. mass 203.973 amu minus 0.014. 2. mass 205.9745 - - 0.241 am. 3. mass 206.9759 - 0.221 amu. 4. mass 207.9766 - - 0.524 amu. Next, we add the corresponding decimal abundance to each atomic mass for each element.

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The processes have a negative enthalpy change, the correct option is D. I, II and III.

I) 2CH₃OH(l)  +  3O₂(g)  --->  2CO₂(g)  +  4H₂O(l)

Enthalpy change = ∑product - ∑reactant

Enthalpy change =  (  2(-395.5)  + 4( -285.8) - 2 (-238.4)

Enthalpy change  = -1280 kJ = -ve

II) HCl(aq)  +  NaOH(aq)  ---->  NaCl(aq)  +  H₂O(l)

Enthalpy change = ∑product - ∑reaction

Enthalpy change  = - ve

II) H₂O(g)   --->  H₂O(l)

Enthalpy change = ∑product - ∑reactant

Enthalpy change  = - 285.8  - ( -238.4)

Enthalpy change  = - ve

Thus, all the value of the change in the enthalpy is negative.

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Mole is a unit of measurement used to measure the amount of a chemical substance, with 1 mole containing 6.022 x 1023 atoms, or 1.204 x 1024 atoms.

A mole is a unit of measurement in chemistry that is used to determine the quantity of a chemical. It is described as the quantity of a material containing the same number of particles (atoms, molecules, ions, and so on) as there are atoms in 12 grammes of carbon-12.

2 moles of Ca have 2 x 6.022 x 1023 atoms. This is due to the fact that the mole (mol) is a unit of measurement used to determine the quantity of a chemical compound. 1 mol of a material corresponds to 6.022 x 1023 atoms of that substance. As a result, 2 moles of Ca contain 2 x 6.022 x 1023 atoms, or 1.204 x 1024 atoms.

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The statement that is false among the given statements is:  the solvation process (alone) usually absorbs heat.

The correct option is 2.

The process of solvation involves the interaction of solvent molecules with the ions or molecules that make up the solute.

Strong interactions between ionized and uncharged molecules and a solvent affect the solvent's viscosity, density, and other properties as well as the solute's solubility, reactivity, and color. These interactions also have an impact on the solute's solubility, reactivity, and color.

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Answer:

True

Explanation:

Birds are characterized by the presence of certain physical features that are unique to the group and serve to distinguish birds from other animal groups. These features, such as feathers, a beak instead of teeth, a lightweight skeleton, and the ability to fly, are considered the defining characteristics of birds. These defining characteristics serve as the basis for classifying birds as a distinct group and are used by scientists to identify and study different bird species.

According to the question, CH₃OH compound will have the higher boiling point.

What is boiling point?

Boiling point is the temperature at which a liquid transforms into a gas. It is a critical physical property of a substance and depends on the pressure of the environment. At atmospheric pressure, the boiling point of water is 100°C (212°F). For other liquids, the boiling point can vary depending on the composition of the liquid. For example, the boiling point of ethanol is 78.3°C (173°F). In addition, the boiling point of a liquid can be affected by the addition of other substances, such as a solute. The boiling point of a liquid is also known as its atmospheric boiling point or normal boiling point. The boiling point of a liquid is important in industrial processes such as distillation or fractional distillation, as well as in cooking and food preparation.

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The activation energy for a particular reaction is 37.8 kj/mol. If the rate constant at 280 k is 0.178 m/s, then 2.14 m/s is the value of the rate constant at 385 k.

A reaction rate constant, also known as a reaction rate coefficient, in chemical kinetics. Here, [A] and [B] are the molar concentrations of substances A and B in moles per unit volume of solution, assuming the reaction is occurring throughout the volume of the solution, and k is the reaction rate constant that depends on temperature. Partial orders of reaction have exponents m and n, which are not always equivalent to the stoichiometric coefficients a and b. Instead, they are dependent on the reaction process and are amenable to experimental determination.

[tex]K = Ae^{Ea/RT}[/tex]

[tex]0.178 = Ae^{(-37,800 J/mol / (8.314 J/molK ×280 K))\\}[/tex]

A = 3.44 x 10¹¹

k = (3.44 x 10¹¹) × [tex]e^(-37,800 J/mol / (8.314 J/mol×K ×385 K))[/tex]

k = 2.14 m/s

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Alcohol CH3CH2OH has a molar mass of 46.07 (molecular masses: Carbon = 12 u, H = One u, and O = 16 u).

Alcohols are a class of chemical compounds that include substances like ethanol, CH3CH2OH, which has a hydroxyl group, or -OH, attached to a carbon atom. A chemical molecule called ethanol is combustible and colorless. It is present in alcoholic beverages.

A The three various ways that the molecular formula for ethanol can be written—CH3CH2OH (which shows the existence of an ester bond, CH3CH2 and an OH group), C2H5OH and C2H6O—all reveal that the compound contains carbon - carbon double bonds, six hydrogen, and one oxygen atom.

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Answer:

The volume of 17.0 grams of water vapor at 112.0°C and a pressure of 0.822 atm is 26.66 L.

Explanation:

We can use the ideal gas law to calculate the volume of water vapor at the given temperature and pressure:

PV = nRT

Where P is the pressure (0.822 atm), V is the volume, n is the number of moles of water vapor, R is the ideal gas constant (0.0821 L·atm/mol·K), T is the temperature in kelvin (385.15 K, calculated from 112.0°C), and m is the mass of water vapor.

First, we need to find the number of moles of water vapor, n:

n = m / M

Where m is the mass of water vapor (17.0 g) and M is the molar mass of water vapor (18.015 g/mol).

Substituting the values in the ideal gas law, we get:

PV = (m / M) * R * T

V = (m / M) * R * T / P

V = (17.0 g / 18.015 g/mol) * 0.0821 L·atm/mol·K * 385.15 K / 0.822 atm

V = 26.66 L

So, the volume of 17.0 grams of water vapor at 112.0°C and a pressure of 0.822 atm is 26.66 L.

We need a thorough understanding of the citric acid cycle in order to address this. This means that every time that citric acid cycle changes turns, 3 NADH molecules are created.

Citrus acid, a naturally occurring organic acid, is present in many fruits, vegetable, including fruit liquids, particularly orange juice. It is not a vital vitamin or nutrient, thus you are not required to include it in their diet.

Citrus with acid is entirely safe. Your body breaks it down, and pee helps to get rid of it. In fact, magnesium oxalate, which causes kidney stones, might be prevented by this. Studies show that citric acid inhibits the growth of stones.

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A tablet weighing 0.940 g was dissolved in dilute sulphuric acid made up to 250 cm³ with water. 25.0 cm³ of this solution was titrated with 0.00160 M K[tex]_2[/tex]Cr[tex]_2[/tex]O requiring 32.5 cm3 of the  K[tex]_2[/tex]Cr[tex]_2[/tex]O. 4.17% is the percentage by mass of  [tex]Fe^{2+}[/tex] in the tablet.

Mass percent is a means to describe a component in a specific combination or to convey a concentration. The mass percentage used to describe the solution composition indicates the mass of solute contained in a given mass of solution. The solute's concentration is specified in terms of mass or moles.

6[tex]Fe^2+[/tex] + [tex]Cr_2O_7^{2-}[/tex] + 14[tex]H^+[/tex] → 6[tex]Fe^{3+}[/tex] + 2[tex]Cr^{3+}[/tex]+ 7H[tex]_2[/tex]O

32.5 cm³x 0.00160 M = 0.052 g of K[tex]_2[/tex]Cr[tex]_2[/tex]O[tex]_7[/tex]

0.052 g / 294.18 g/mol = 0.000177moles of K[tex]_2[/tex]Cr[tex]_2[/tex]O

0.000177 mol / 6 = 0.0000295 mol moles of [tex]Fe^{2+}[/tex]

0.0000295 mol / 0.025 L = 0.00118 M  of  [tex]Fe^{2+}[/tex]

0.00118 M x 55.845 g/mol x 0.025 L = 0.0392 g of  [tex]Fe^{2+}[/tex]

0.0392 g / 0.940 g x 100% = 4.17% percentage by mass of  [tex]Fe^{2+}[/tex]

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The amount of gas exhaled per breath depends on the size of the person and their breathing rate. Generally speaking, an average adult exhales around 0.5 liters of air per breath, which is equivalent to around 0.0012 moles of gas. Therefore, the boy would exhale 0.0012 moles of gas per breath.

To calculate the number of moles of a gas, you need to use the ideal gas law, which states that the product of pressure, volume, and temperature is equal to the number of moles of the gas in the container times the gas constant.

This can be written as PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature. To calculate the number of moles [1], you can rearrange this equation to n = PV/RT. Therefore, to calculate the number of moles of gas, you need to know the pressure, volume, and temperature of the gas, and the ideal gas constant.

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when an atom of sodium (na- group 1a alkali metals) and an atom of fluorine (f- group 7a halogen) combine to form the salt sodium fluoride (naf), an ionic bond is formed. which statement correctly describes how the bond is formed?

The correct answer is option d.

d. sodium (na) will donate its one valence electron to fluorine (f). when this occurs, sodium becomes a positively charged ion and fluorine becomes a negatively charged ion, creating the ionic sodium fluoride.

One valence electron, or Na, is present in sodium's outermost orbit. To complete its octet by having 8 electrons in its outermost orbit, sodium needs to lose this one valence electron. Fluorine requires one more electron to complete its octet and have 8 electrons in its outermost orbit. It now has 7 in this orbit. In order to complete their octet, Sodium and Fluorine, respectively, want to gain and lose one electron. They do this by transferring the valence electron from the sodium atom to the fluorine atom, giving sodium a positive charge (+1) and fluorine a negative charge (1). When one atom shares its electrons with its nearby atom, an ionic bond is created between the two atoms.

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Answer:

D. Sodium (Na) will donate its one valence electron to Fluorine (F). When this occurs, Sodium becomes a positively charged ion and Fluorine becomes a negatively charged ion, creating the ionic bond

Explanation:

A. Fluorine (F) will donate its seven valence electrons to Sodium (Na). When this occurs, Fluorine becomes a negatively charged ion and Sodium becomes a positively charged ion, creating the ionic bond.

B. Fluorine (F) will donate its seven valence electrons to Sodium (Na). When this occurs, Fluorine becomes a positively charged ion and Sodium becomes a negatively charged ion, creating the ionic bond.

C. Sodium (Na) will donate its one valence electron to Fluorine (F). When this occurs, Sodium becomes a negatively charged ion and Fluorine becomes a positively charged ion, creating the ionic bond.

D. Sodium (Na) will donate its one valence electron to Fluorine (F). When this occurs, Sodium becomes a positively charged ion and Fluorine becomes a negatively charged ion, creating the ionic bond

Answer:

C.

Explanation:

average of isotopic masses

The atomic mass of an element is determined by the average of the isotopic masses present in nature.

Isotopes are different forms of an element that have the same number of protons in their nucleus, but a different number of neutrons. Each isotope of an element has a unique atomic mass that is determined by the number of protons and neutrons in its nucleus.

In nature, elements are found as a mixture of their isotopes, and the atomic mass of an element is calculated by summing the product of the mass of each isotope and its relative abundance. This weighted average takes into account the fact that some isotopes are more common than others and gives a more accurate representation of the element's atomic mass.

Therefore, the atomic mass of an element is not determined by the average of ions, the average of protons, the average of radioactive particles, or the average of crude weights, but rather by the average of isotopic masses.

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The given equation Na₂O + HF-> NaF + H₂O does not satisfy the law of conservation of matter, since there are 2 sodium atoms as reactants, but only 1 sodium atom as a product.

There are certain laws that govern the chemical reactions. These laws are known as the laws of chemical combination. The law of conservation of matter states that matter is neither created nor destroyed in a chemical reaction.

The law of conservation of matter is also called the law of conservation of mass. The total mass of the products is equal to the total mass of the reactants.

According the law of conservation of matter the number of reactants and products before and after the reaction should be the same.

But here in the reaction of sodium oxide (Na₂O) with hydrofluoric acid (HF) to produce sodium fluoride (NaF) and water (H₂O) the number of Na and H atoms are not equal on both sides.

Thus the equation Na₂O + HF-> NaF + H₂O does not obey the law of conservation of matter.

To know more about the law of conservation of matter, visit;

https://brainly.com/question/12733091

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