What is the maximum number of unpaired d electrons that an atom or ion can possess? Give an example of an atom and an ion that have this number.

Nitrogen=21.1999%

Hydrogen=6.1023%

Sulfur=24.2660%

The percent composition of nitrogen, hydrogen, sulfur , oxygen in ammonium sulfate is 21.18%, 6.05%,24.21%,48.43% respectively.

The percent composition  is defined as a convenient way to record concentration of solution.It is a expression which relates solute to solvent as,mass of solute/mass of solution ×100.It helps in elemental analysis of a given compound by giving proportions in which they are present.

Percent composition of N= 28/132.14×100=21.18%

Percent composition of H=8/132.14×100=6.05%

Percent composition of S=32/132.14×100=24.21%

Percent composition of O=64/132.14×100=48.43%.

Thus, the percent composition of nitrogen, hydrogen, sulfur , oxygen in ammonium sulfate is 21.18%, 6.05%,24.21%,48.43% respectively.

Learn more about percent composition,here:

https://brainly.com/question/17505281

#SPJ2

The change in heat for the reaction can be estimated by calculating the total bond dissociation energy of the bonds broken minus the total bond dissociation energy of the bonds formed.

Bonds Broken:

4 C-H bonds: 4 × 410 kJ/mol = 1640 kJ/mol

4 F-F bonds: 4 × 158 kJ/mol = 632 kJ/mol

Bonds Formed:

4 C-F bonds: 4 × 450 kJ/mol = 1800 kJ/mol

4 H-H bonds: 4 × 436 kJ/mol = 1744 kJ/mol

Total energy change:

Energy change = (Energy of bonds broken) - (Energy of bonds formed)

Energy change = (1640 kJ/mol + 632 kJ/mol) - (1800 kJ/mol + 1744 kJ/mol)

Energy change = 2272 kJ/mol - 3544 kJ/mol

Energy change = -1272 kJ/mol

The estimated change in heat for the reaction is -1272 kJ/mol. Therefore, the correct answer is (c) -716 kJ. This means the reaction is exothermic, releasing 716 kJ of energy per mole of methane reacting.

learn more about reaction here:

https://brainly.com/question/30464598

#SPJ11

Atomic number = 15 and mass number = 31 where an atom has 15 protons, 15 electrons and 16 neutrons.

An atom consists of a central nucleus that is usually surrounded by one or more electrons.

The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom. Atomic number = Number of protons.

Mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.

Hence, atomic number=15 and mass number=31.

Learn more about the atom here;

https://brainly.com/question/4186338

#SPJ2

Answer:

Volume occupied is approx.  

38 ⋅ ML

Explanation:

Density  ρ = Mass  Volume  And thus  Volume  = Mass  ρ = 1.592 ⋅ l b × 454 ⋅ g ⋅ l b − 1 19.3 ⋅ g ⋅ m L − 1   =   ? ? ⋅ m L

Answer:

0,218 moles

Explanation:

I will first explain how many liters is 256ml, that is 0,256 l.

because the m stands for milli which is a factor of 1000 -> (256 ml / 1000 = 0,256 l)

To calculate the amount of moles you multiply the volume with the concentration. So 0,256l x 0,855M = 0,218 moles.

Answer: 0.256

Explanation:

The theoretical yield of the reaction is 363.3 mg.

This is because benzil and dibenzylketone have an 1:1 molar ratio, and the mass of dibenzylketone (363.3 mg) is equal to the molar mass of the two substances combined.

The molar mass of benzil is 190.2 g/mol, while the molar mass of dibenzylketone is 173.1 g/mol. Therefore, the total molar mass of the reaction is 363.3 g/mol, which is equal to the mass of the dibenzylketone.

This means that the theoretical yield of the reaction is 363.3 mg.

The theoretical yield is determined by the amount of reactants used in the reaction.

Because benzil and dibenzylketone have an 1:1 molar ratio, the mass of dibenzylketone is equal to the molar mass of the two substances combined. Therefore, the theoretical yield of the reaction is 363.3 mg.

To know more about molar mass click on below link:

https://brainly.com/question/22997914#

#SPJ11

Answer:

A. Encourage an increase in pollution in these countries

Answer:

La configuración electrónica del cloruro es 1s2 2s2 2p6 3s2 3p6.

Explanation:

Answer:

12.6 L CO2

Explanation:

Mass = 24.7 grams

Molar mass = 44.01 g/mole

Volume at STP = ?

The relationship between these quantities is given as

Number of moles = Mass / Molar mass

Number of moles = 24.7 g /  44.01 g/mole

Number of moles = 0.5612 moles

1 mol = 22.4 L

0.5612 mol = x

x = 0.5612 * 22.4

x = 12.6 L

False. No central carbon is bonded to two additional carbons in aldehydes.

The carbon atom in every member of the category of organic compounds called as an aldehyde has three single bonds, one with hydrogen, another with oxygen, and the one with another atom as well as a group of atoms (marked "R" in standard chemical formulae & structure diagrams).

A carbonyl group is joined to the carbon atom there at end of the carbon chain to form an organic molecule known as an aldehyde. An organic molecule known as a ketone is one in which a carbonyl group is joined to the carbon atom with in carbon chain.

To know more about aldehyde visit :

https://brainly.com/question/1792281

#SPJ4

b. The critical path refers to the longest sequence of activities from the start to the end of a project, considering the duration of each activity.

c. The total duration for the critical path activities is 18 days, which represents the expected project completion time.

The critical path is a term used in project management to refer to the sequence of activities that determines the minimum time required to complete a project. It is the longest path from the start to the end of the project, considering the duration of each activity. The critical path helps identify the activities that must be closely monitored and managed to ensure the project is completed on time.

Learn more about project completion time

https://brainly.com/question/32318500

#SPJ11

Answer:

Oxygen and sulfur have similar chemical properties because both elements have six electrons in their outermost electron shells. Indeed, both oxygen and sulfur form molecules with two hydrogen atoms: water and hydrogen sulfide

Explanation:

The frequency the concentration level of a high-level disinfectant must be tested. This statement is false.

The concentration level of a high-level disinfectant must be tested periodically to ensure its effectiveness. High-level disinfectants are used to kill or inactivate a wide range of microorganisms, including bacteria, viruses, and fungi. To ensure that the disinfectant is working as intended, it is necessary to monitor its concentration regularly. The frequency of testing the concentration level of a high-level disinfectant may vary depending on factors such as the specific disinfectant used, the frequency of use, and the manufacturer’s guidelines. Generally, it is recommended to test the concentration level at regular intervals, such as daily, weekly, or monthly, depending on the circumstances.

By regularly testing the concentration level, healthcare facilities, laboratories, or any other settings that use high-level disinfectants can ensure that the disinfectant is maintained at the appropriate concentration for effective disinfection. This helps to mitigate the risk of microbial contamination and maintain a safe and hygienic environment.

Learn more about High-level disinfectants here:

https://brainly.com/question/31918695

#SPJ11

Based on the information provided, we can determine the shape of the product molecule Y2X. Since Y2X has three atoms, we need to consider the possible molecular geometries for a molecule with three atoms.

The possible molecular geometries for a three-atom molecule are:

Linear - all three atoms lie in a straight line.

Bent - the three atoms are not in a straight line and the two outer atoms are bent away from the middle atom.

Trigonal planar - the three atoms lie in a flat plane, forming an equilateral triangle.

Since the reactants X and Y are atoms, it is likely that they will form a diatomic molecule, XY. When another Y atom is added to form the product Y2X, the resulting molecule will have three atoms. Therefore, the possible molecular geometries for Y2X are the same as for a three-atom molecule.

The molecular geometry of Y2X will depend on the electronic configuration of the atoms involved, but we can make some general predictions.

If X is a small atom like hydrogen (H) or helium (He), and Y is a larger atom like chlorine (Cl) or bromine (Br), then the resulting molecule Y2X is likely to be bent. This is because the larger Y atoms will repel each other, causing the molecule to bend.

On the other hand, if X is a larger atom than Y, then the resulting molecule Y2X is likely to be linear. This is because the smaller Y atoms will be attracted to the larger X atom, causing the molecule to form a straight line.

Therefore, based on the limited information provided, we can predict that the shape of the product molecule Y2X is either bent or linear, depending on the relative sizes of X and Y atoms.

Learn more about molecular geometry from

https://brainly.com/question/25440372

#SPJ1

Based on the information provided, we can determine the shape of the product molecule Y2X. Since Y2X has three atoms, we need to consider the possible molecular geometries for a molecule with three atoms.

The possible molecular geometries for a three atom molecule are:

Linear - all three atoms lie in a straight line.

Bent - the three atoms are not in a straight line and the two outer atoms are bent away from the middle atom.

Trigonal planar - the three atoms lie in a flat plane, forming an equilateral triangle.

Since the reactants X and Y are atoms, it is likely that they will form a diatomic molecule, XY. When another Y atom is added to form the product Y2X, the resulting molecule will have three atoms. Therefore, the possible molecular geometries for Y2X are the same as for a three-atom molecule.

The molecular geometry of Y2X will depend on the electronic configuration of the atoms involved, but we can make some general predictions.

If X is a small atom like hydrogen (H) or helium (He), and Y is a larger atom like chlorine (Cl) or bromine (Br), then the resulting molecule Y2X is likely to be bent. This is because the larger Y atoms will repel each other, causing the molecule to bend.

On the other hand, if X is a larger atom than Y, then the resulting molecule Y2X is likely to be linear. This is because the smaller Y atoms will be attracted to the larger X atom, causing the molecule to form a straight line.

Therefore, based on the limited information provided, we can predict that the shape of the product molecule Y2X is either bent or linear, depending on the relative sizes of X and Y atoms.

Learn more about molecular geometry from

brainly.com/question/25440372

#SPJ1

The best description of cis-trans isomers is that they differ in their spatial arrangement around inflexible double bonds. This means that although they have the same number of atoms of the same elements and the covalent bonds between them, they differ in how those atoms are arranged around the double bond.

Cis-trans isomers best described as: They differ in their spatial arrangement around inflexible double bonds. These isomers have the same number of atoms of the same elements, but they differ in how the hydrogen and carbon atoms are arranged around the covalent bonds, specifically the inflexible double bonds. This difference in spatial arrangement results in unique chemical and physical properties for each isomer.

To know more about Cis-trans isomers

brainly.com/question/31610429

#SPJ11

You would need 5 ml of hydrogen gas to produce 5 ml of water vapor when an unlimited volume of oxygen gas is available.

To determine the volume of hydrogen needed to produce 5 ml of water vapor, we can use the balanced chemical equation for the reaction between hydrogen gas (H2) and oxygen gas (O2): 2H2 + O2 → 2H2O.
Since the stoichiometry of the reaction indicates that 2 moles of hydrogen gas react with 1 mole of oxygen gas to produce 2 moles of water vapor, we can use the mole ratio to calculate the volume of hydrogen gas needed.
First, convert the given volume of water vapor (5 ml) to moles by dividing by the molar volume of water vapor (22.4 L/mol) at standard temperature and pressure. This gives us:
5 ml ÷ 1000 ml/L ÷ 22.4 L/mol = 0.000223 moles of water vapor.

Since the mole ratio is 2:2 between hydrogen gas and water vapor, we need the same amount of moles of hydrogen gas. Therefore, the volume of hydrogen gas needed can be calculated using the molar volume of hydrogen gas (22.4 L/mol) at standard temperature and pressure:
0.000223 moles × 22.4 L/mol = 0.005 L or 5 ml of hydrogen gas.
Thus, you would need 5 ml of hydrogen gas to produce 5 ml of water vapor when an unlimited volume of oxygen gas is available.

To know more about hydrogen gas refer to:

https://brainly.com/question/24433860

#SPJ11

Answer:

Liquid and gases are both fluid and helps in transfer of different substances but solid is not a fluid medium because it is rigid

Answer:nothing beats the chemistry between us :) smooth right?

Explanation:I’m pretty sure u have to show the part before the questions so that people can respond to it since there is no info on how to answer the question :p

Answer:

There is 5.56 g of gold for every 1 g of chlorine

Explanation:

The question is to determine the simplest mass ratio of gold to Chlorine in the compound.

Since the mass of gold in the compound compared to chlorine is 15.39 g for every 2.77 g, the mass of gold per gram of chlorine is given as:

15.39 / 2.77 = 5.56 g of gold to two decimal places

Therefore, for every 5.56 g of gold, there is 1 g of chlorine.

Note : The ratio in which different elements combine by mass to form a compound is given by the law of constant composition which states that, "all pure samples of a particular chemical compound contain the same elements combined in the same proportion by mass.

when 70.0 g of li3n(s) reacts with excess h2(g), 8.0 g of linh2 (s) is produced. The percent yield is closest to 17%

How to calculate the percentage yield

The reaction between  Li3N(s) and LiH(s) is given as:

Li3N+3H2 = 3LiH + NH3

Calculate the moles of Li3N

Moles = Mass/Molar mass

Moles = 70/35

Moles = 2 moles

From the reaction you can see that 1 mole of Li3N produce 3 moles of LiH, hence the moles of LiH is 6 moles

Determine the mass of LiH (theoretical yield)

Mass of LiH = 6 * 7.95

Mass of LiH = 47.7g

%yield = actual/theoretical * 100

%yield = 8/47.7 * 100

%yiels = 16.77%

Hence the percent yield is closest to 17%

Learn more on percent yield here:

https://brainly.com/question/12704041

#SPJ4

So,

The reaction that takes place here is the next one:

The first thing we're going to do is to pass the mass of each compound to moles. (We do this just dividing by the molecular weight of the compound):

Now, the last step is just to divide each amount by the coefficient of the reaction of each compound. The smaller result will be the limiting reactant.

Therefore, the limiting reactant is O2.

When p-propylaniline reacts with aqueous sodium nitrite (NaNO₂), it undergoes a reaction called diazotization. Chloride anion (p-propyl chloride): [CH₃CH₂CH₂Cl]⁻

This reaction converts the primary aromatic amine (p-propylaniline) into a diazonium salt.The amine group (NH₂) of p-propylaniline reacts with nitrous acid (formed by the reaction of NaNO₂ and HCl) to form the

p-propylaniline + nitrous acid → p-propyldiazonium cation

The diazonium cation can further react with various nucleophiles to form different products. In this case, the reaction can proceed with the chloride anion (Cl⁻) as the nucleophile:

p-propyldiazonium cation + chloride anion → p-propyl chloride + nitrogen gas.The product is p-propyl chloride, with a chloride atom replacing the diazonium group. Nitrogen gas (N₂) is also evolved as a byproduct.

Diazonium cation (p-propyldiazonium): [CH₃CH₂CH₂N₂]⁺ (positive charge on N)

Chloride anion (p-propyl chloride): [CH₃CH₂CH₂Cl]⁻

To learn more about  organic product

brainly.com/question/31385857

#SPJ4

Answer:

distilling. since the liquids have different boiling points distilling would be the best.

Answer: Distilling

Explanation: this is correct

Answer:

blurred an pic mo paki ayos

Answer:

If the volume of a gas is decreased by changing the shape of the container, the number of collisions per area between the molecules and the container walls will increase. This corresponds to an increase in the gas pressure, which is the force exerted per area.

Answer:

199.7mL

Explanation:

Using Charles law equation as follows:

V1/T1 = V2/T2

Where;

V1 = initial volume (mL)

T1 = initial temperature (°F)

V2 = final volume (mL)

T2 = final temperature (°F)

According to the information provided in this question, V1 = 135mL, V2 = ?, T1 = 67.6°F, T2 = 100°F

Using V1/T1 = V2/T2

135/67.6 = V2/100

Cross multiply

135 × 100 = 67.6 × V2

13500 = 67.6V2

V2 = 13500/67.6

V2 = 199.704

The new volume in the air in the helium ballon is 199.7mL.

Answer:

explain;

math

The sponge is unsaturated when it is taking in more water. It becomes saturated when it stops taking in water. It is supersaturated when water starts oozing out from the sponge.

A saturated solution contains just as much solute as it normally hold at a particular temperature. An unsaturated solution contains less solute than it can normally hold at a particular temperature. A supersaturated solution contains more solute than it can normally hold at a particular temperature.

We can use a sponge to model these three scenario as follows;

Water continues to enter into the sponge when it is unsaturated, this continues until the sponge becomes saturated with water and takes in no more water. When the sponge becomes supersaturated, water begins to ooze out from the sponge because it can no longer hold more water.

Learn more: https://brainly.com/question/1527403

Answer: 57 neutrons

Explanation: Ruthenium has an atomic number of 44, meaning it has 44 electrons, 44 protons, and 57 neutrons.

Answer:

57 neutrons

Explanation:

Ruthenium has atomic number of 44, that is, it contains 44 electrons distributed in atomic orbitals and its nucleus has 44 protons and 57 neutrons (Figure 1). Electron distribution in atomic or molecular orbitals is called electron configuration which for Ru and the other group 8 chemical elements is shown in Table 1.

To draw the vector representing the current element . we need to consider its correct position and direction relative to the current element. The magnitude of the vector is not important for this task.


Determine the correct position of the vector by placing its tail at the starting point of the current element and its head at the endpoint of the current element If the current element is represented by an arrow, the vector should have the same direction as the arrow. Draw the vector with an arrowhead to represent its direction.


To draw the vector representing the current element. we need to consider its correct position and direction relative to the current element. The magnitude of the vector is not important for this task. Determine the correct position of the vector by placing its tail at the starting point of the current element and its head at the endpoint of the current element. This ensures that the vector is aligned with the current element. Next, determine the correct direction of the vector.

To know more about magnitude visit:

https://brainly.com/question/28173919

#SPJ11