Write the complete electron configurations with spaces between the sublevels. If you do not format correctly your answers will all be incorrect.

For example:

1a1 2b2 3c3 4d4

The ion configuration for an O-2 ion is (answer)

\(\bold{\huge{\blue{\underline{ Answers}}}}\)

Ans 1.) Potassium ( 1 ) , palladium (2)

Metals are those which posses lustre, hardness, malleability, ductility etc.

Ans 2.) Oxygen ( 5 ) , Argon ( 4 )

Non metals are those elements which do not possess lustre, hardness, ductility, malleability etc... they are generally brittle in nature.

Ans 3.) Boron ( 3 )

Metalloids are those substances which shows both the properties of metals and nonmetals.

Ans 4.) Boron ( 3 )

Semiconductor are those substances whose conductivity is lie between insulators and conductors.

Ans 5.) Argon(4)

Least reactive gases are those gases which generally do not reactive with any element or having very least reactivity like argon which is noble gas.

Ans 6.) Oxygen (5)

Oxygen is dull, easily breakable and good insulator but only in solid form

Ans 7.) Palladium(2)

Malleability is the property of metals that is drawn metals into thin sheets .

The percent by mass of sodium sulfate in a solution of 32.0 g of sodium sulfate dissolved in enough water to make 94.0 g of solution is 34.0%.

The percent by mass of sodium sulfate in the solution can be calculated by dividing the mass of sodium sulfate by the mass of the solution and multiplying by 100.

Mass of sodium sulfate = 32.0 g
Mass of solution = 94.0 g

Percent by mass = (Mass of sodium sulfate / Mass of solution) * 100
               = (32.0 g / 94.0 g) * 100
               = 34.0%
The percent by mass of sodium sulfate in the solution is 34.0%.

To know more about sodium sulfate visit:

https://brainly.com/question/28863956

#SPJ11

Answer:

Significant Figures in 200.0

Result 200.0

Sig Figs 4 (200.0)

Decimals 1 (200.0)

Scientific Notation 2.000 × 102

E-Notation 2.000e+2

The vapor pressure of water above a solution prepared by adding 23.5 g of lactose (C12H22O11) to 200.0g of water at 338K is 186.37 torr.

Mass of lactose = 23.5 g ; Mass of water = 200.0 g ; Temperature of solution = 338 K

Vapour pressure of water = 187.5 torr ; Molar mass of lactose = 12×12 + 22×1 + 11×16= 342 g/mol

Number of moles of lactose can be determined as :

n = mass/Molar mass = 23.5 g / 342 g/mol = 0.0687 mol

Molality of the solution, m = (n of solute)/(mass of solvent in kg) = 0.0687/0.2 kg = 0.3435 m

Vapour pressure of water (PH2O) = P°H2O * XH2O

where, P°H2O is the vapor pressure of pure water at a given temperature

XH2O is the mole fraction of water.

Number of moles of water = (mass of water)/(Molar mass of water) = 200.0/18 = 11.11 moles

Mole fraction of water can be determined as :

XH2O = (11.11 moles of water)/(11.11 moles of water + 0.0687 moles of lactose)

XH2O = 0.9939

Therefore, PH2O = P°H2O * XH2O

PH2O = 187.5 torr * 0.9939PH2O = 186.37 torr

Therefore, the vapor pressure of water above a solution prepared by adding 23.5 g of lactose (C12H22O11) to 200.0g of water at 338K is 186.37 torr.

To learn more about vapour pressure :

https://brainly.com/question/2693029

#SPJ11

The energy efficiency of a fuel cell can be calculated by dividing the electrical energy output by the energy input. In a fuel cell, the energy input refers to the chemical energy stored in the fuel that is converted to electrical energy through a redox reaction.

This redox reaction is spontaneous, meaning that it releases energy when it occurs. Therefore,  energy input is calculated by measuring the heat released by the reaction, which is proportional to the chemical energy of  fuel. The energy output is determined by measuring the electrical energy produced by  fuel cell. The energy efficiency is expressed as  percentage, where the higher the percentage, more efficient the fuel cell is in converting chemical energy to electrical energy.

To know more about redox reaction, here

brainly.com/question/13293425

#SPJ1

Answer:

it will evaoprate over time

Explanation:

Answer:

wdym ur confusing me

Explanation:

Molecules are compounds that make covalent bonds between atom. In a covalent bond, the electrons from each atom invoved are shared between them, sticking the atoms together.

In ionic compounds, the electrons of each atoms are not shared, they are part of either of the ions. The ions sticke together because they are charged with opposite charges, so they attract each other.

So, ionic compounds are not considered individual molecules because they don't make covalent bonds, that is, their atoms don't shared electrons, they attract each other because of their opposite charges.

Answer:

In atomic physics, the Bohr model or Rutherford–Bohr model, presented by Niels Bohr and Ernest Rutherford in 1913, is a system consisting of a small, dense nucleus surrounded by orbiting electrons—similar to the structure of the Solar System, but with attraction provided by electrostatic forces in place of gravity.

Explanation:

Answer:

In atomic physics, the Bohr model or Rutherford–Bohr model, presented by Niels Bohr and Ernest Rutherford in 1913, is a system consisting of a small, dense nucleus surrounded by orbiting electrons—similar to the structure of the Solar System, but with attraction provided by electrostatic forces in place of gravity

Answer:

1. Crush the sugar into powder.

2. Heat the water.

3. Dissolve it by stirring continuously

Explanation:

1. Crushing the sugar into powder increases surface area. So it increases the changes of dissolving

2. Heating the water increases the capacity of water to dissolve sugar.

3. Stirring continuously increases randomness of particles so eases mixing up thus increasing dissolving tendency.

Molarity

Chemists primarily need the concentration of solutions to be expressed in a way that accounts for the number of particles that react according to a particular chemical equation. Since percentage measurements are based on either mass or volume, they are generally not useful for chemical reactions. A concentration unit based on moles is preferable. The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.

Note that the volume is in liters of solution and not liters of solvent. When a molarity is reported, the unit is the symbol M and is read as “molar”. For example a solution labeled as 1.5 M NH 3 is read as “1.5 molar ammonia solution”.

Sample Problem: Calculating Molarity

A solution is prepared by dissolving 42.23 g of NH 4 Cl into enough water to make 500.0 mL of solution. Calculate its molarity.

Step 1: List the known quantities and plan the problem.

& underline{text{Known}} &&underline{text{Unknown}} \& text{mass}=42.23 text{g} NH_4Cl && text{molarity}= ? text{ M}\& text{molar mass} NH_4Cl=53.50 text{g} / text{mol} \& text{volume solution}=500.0 text{mL}=0.5000 text{L}

The mass of the ammonium chloride is first converted to moles. Then the molarity is calculated by dividing by liters. Note the given volume has been converted to liters.

Step 2: Solve.

42.23 text{ g } NH_4Cl times frac{1 text{ mol } NH_4Cl}{53.50 text{ g } NH_4Cl} &= 0.7893 text{ mol } NH_4Cl\frac{0.7893 text{ mol } NH_4Cl}{0.5000 text{ L}} &= 1.579 text{ M}

Step 3: Think about your result.

The molarity is 1.579 M, meaning that a liter of the solution would contain 1.579 mol NH 4 Cl. Four significant figures are appropriate.

In a laboratory situation, a chemist must frequently prepare a given volume of solutions of a known molarity. The task is to calculate the mass of the solute that is necessary. The molarity equation can be rearranged to solve for moles, which can then be converted to grams. See sample problem 16.3.

Sample Problem:

A chemist needs to prepare 3.00 L of a 0.250 M solution of potassium permanganate (KMnO 4 ). What mass of KMnO 4 does she need to make the solution?

Step 1: List the known quantities and plan the problem.

Known

molarity = 0.250 M

volume = 3.00 L

molar mass KMnO 4 = 158.04 g/mol

Unknown

mass KMnO 4 = ? g

Moles of solute is calculated by multiplying molarity by liters. Then, moles is converted to grams.

Step 2: Solve.

text{mol KMnO}_4 = 0.250 text{ M KMnO}_4 times 3.00 text{ L} &= 0.750 text{ mol KMnO}_4\0.750 text{ mol KMnO}_4 times frac{158.04 text{ g KMnO}_4}{1 text{ mol KMnO}_4} &=119 text{ g KMnO}_4

Step 3: Think about your result.

When 119 g of potassium permanganate is dissolved into water to make 3.00 L of solution, the molarity is 0.250 M.

Answer:

A meteor shower are defined as the celestial event in which a meteor comes from one point in the sky and visible in night sky.

Meteors are also known as Shooting stars as they glow when enters in the Earth surface as glowing streaks, where tail point to the origin in the sky and face faces the Earth surface.

Meteor showers take place when meteoroids entering Earth's atmosphere.

Meteor showers can repeat themselves because it depends on the comet orbits which can take place at the same time each year.

Answer: A! The soup will become saltier because evaporation removes the water and leaves the salt behind.

Explanation:

Just finished the test and got a 90%! <3

Answer:

A

Explanation:

Answer:

the first statement is correct...

it only supports the main idea of the law of conservation of mass...

hope I can help you...

The ability of microbes to utilize N2 as a nitrogen source is called Nitrogen fixation.

Nitrogen fixation refers to the process by which certain microorganisms convert inert atmospheric nitrogen (N2) into biologically useful forms of nitrogen. Nitrogen is a crucial component of amino acids, which are building blocks of proteins and nucleic acids (DNA and RNA) essential for life.Nitrogen fixation is classified into two categories: atmospheric and industrial. Nitrogen fixation by industrial processes includes Haber-Bosch and Ostwald processes while biological nitrogen fixation is a natural process. Biological nitrogen fixation is carried out by some free-living soil bacteria, symbiotic bacteria present in the root nodules of leguminous plants, and some other groups of bacteria that live in symbiotic associations with various types of plants.

To learn more about Nitrogen fixation check the link below-

https://brainly.com/question/19972090

#SPJ11

A group of atoms where the magnetic fields of the atoms point in the same direction is a magnetic domain. Option c is correct answer.

In every magnet's magnetic field there is a region where the magnetization is in the same direction. This region is known as magnetic domain. In the magnetic domain the atoms always points in the same magnetic filed direction. All the atom's magnetic field align in one particular direction.

They are often found in ferromagnetic materials because their atoms align with magnetic fields in a process called a ferromagnetic phase transition. This region where atoms align is called as domains.

To know more about the magnetic domain, here

brainly.com/question/482990

#SPJ4

The concentration of the NaOH solution is 10.00 g/dm³.

To calculate the concentration in g/dm³ of a solution of NaOH containing 0.25 moles in 1 dm³, we need to know the molar mass of NaOH.

The molar mass of NaOH is calculated as follows:

Na (Sodium) = 22.99 g/mol

O (Oxygen) = 16.00 g/mol

H (Hydrogen) = 1.01 g/mol

Molar mass of NaOH = 22.99 g/mol + 16.00 g/mol + 1.01 g/mol = 40.00 g/mol

Now, we can calculate the concentration (C) using the formula:

C = (moles of solute) / (volume of solution in dm³)

C = 0.25 moles / 1 dm³

C = 0.25 mol/dm³

To convert moles to grams, we can multiply the molar mass by the number of moles:

Concentration in g/dm³ = (0.25 mol/dm³) * (40.00 g/mol)

Concentration in g/dm³ = 10.00 g/dm³

To know more about Hydrogen

https://brainly.com/question/31018544

#SPJ11

Answer:

B)NaOH(s)

Explanation:

Traditionally they include boron from group 3A, silicon and germanium in group 4A, aresnic and antimony in group 5A and tellurium from group 6A, although sometimes selenium, astatine, polonium and even bismuth have also been considered as metalloids. Typically metalloids are brittle and show a semi-metallic luster.

The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Five elements are less frequently so classified: carbon, aluminium, selenium, polonium, and astatine.

An increase in pressure is converted into heat and work, explains the flow of energy in an internal combustion engine. Gasoline is ignited and consumed within an internal combustion engine (ICE) by the engine itself.

The engine then partially transforms the energy from combustion into work. The engine is composed of a fixed cylinder and a rotating piston. There are three main types of internal combustion engines in use today: the spark ignition engine, which is mainly used in automobiles; the diesel engine, which is used in heavy machinery and industrial systems and has an advantage over the more compact and lighter ones due to improvements in cycle efficiency.

To learn more about engine, click here.

https://brainly.com/question/19117846

#SPJ1

The statement "Metallic behavior correlates with large atomic size and low ionization energy. Thus, metallic behavior increases down a group and decreases from left to right across a period" is true.

The statement is true because metallic behavior correlates with large atomic size and low ionization energy. So, as you go down a group, the atomic size and ionization energy decrease, resulting in increased metallic behavior. As a result, when going from left to right across a period, the atomic size decreases, and the ionization energy increases, resulting in a decrease in metallic behavior.

As a result, the metallic behavior increases down a group and decreases from left to right across a period.

For more question on ionization energy click on

https://brainly.com/question/30831422

#SPJ11

Free fatty acids do not typically form bilayers because they possess a single long hydrocarbon chain with a carboxylic acid group (-COOH) at one end. The carboxylic acid group is polar and hydrophilic (water-loving), while the hydrocarbon chain is nonpolar and hydrophobic (water-repellent).

Carboxylic acids are a class of organic compounds that consist of a carboxyl group (-COOH) attached to a hydrocarbon chain. They are considered one of the most important and versatile functional groups in organic chemistry. The carboxyl group is composed of a carbonyl group (C=O) and a hydroxyl group (-OH) bonded to the same carbon atom.

Carboxylic acids are typically acidic due to the presence of the carboxyl group, which can donate a proton (H+) to a base. They exhibit several characteristic chemical properties, including the ability to form salts, esters, amides, and anhydrides. The length and structure of the hydrocarbon chain attached to the carboxyl group can vary, resulting in a wide range of carboxylic acids with different physical and chemical properties.

To know more about Carboxylic acid refer to-

brainly.com/question/4721247

#SPJ4

Answer:

this is your answer.....

The total number of atoms in the mixture containing 0.250 mol of Fe and 1.20 g of C is calculated to be 1.59 x 10^23 atoms.

To determine the number of atoms in the mixture, we follow these steps:

1. Calculate the number of moles of carbon (C) by dividing its mass by its molecular weight. The atomic weight of carbon is 12.011 g/mol, so its molecular weight is also 12.011 g/mol. Therefore, moles of C = 1.20 g / 12.011 g/mol = 0.0999 mol.

2. Use Avogadro's number (6.022 x 10^23 atoms/mol) to convert the number of moles of carbon into the number of atoms. Number of atoms of C = 0.0999 mol x 6.022 x 10^23 atoms/mol = 6.015 x 10^22 atoms.

3. Calculate the number of atoms of iron (Fe) by multiplying the number of moles of Fe (0.250 mol) by Avogadro's number. Number of atoms of Fe = 0.250 mol x 6.022 x 10^23 atoms/mol = 1.505 x 10^23 atoms.

4. Finally, determine the total number of atoms in the mixture by adding the number of atoms of C and Fe. Total number of atoms = 6.015 x 10^22 atoms + 1.505 x 10^23 atoms = 1.59 x 10^23 atoms.

Based on the calculations, the mixture containing 0.250 mol of Fe and 1.20 g of C consists of a total of 1.59 x 10^23 atoms. This value represents the combined number of atoms of carbon and iron present in the mixture.

To know more about atoms click here:

https://brainly.com/question/29695801

#SPJ11

If 3.20 liters of ammonia gas reacts, the amount of oxygen gas that will be consumed is 4L of oxygen gas (option B).

Stoichiometry refers to the quantitative relationship between the reactants and products of a specific reaction or equation.

According to this question, ammonia gas reacts with oxygen gas to produce nitrogen oxide and water as follows:

4NH₃ + 5O₂ → 4NO + 6H₂O

Based on the above equation, 4 moles of ammonia gas reacts with 5 moles of oxygen gas.

This means that 3.2 litres of ammonia gas will react with 3.2 × 5/4 = 4 litres of oxygen gas.

Learn more about stoichiometry at: https://brainly.com/question/18382922

#SPJ1

Answer:

a and d

Explanation:

The volume of gas when the pressure goes from 1.0 atm to 1.4 atm is 8,571.43 L.

When a car is driven into the river, it will implode due to the change in pressure. We are to calculate the volume of gas when the pressure goes from 1.0 atm to 1.4 atm if the internal volume of the car is 12,000 L.In order to solve the problem, we will use the combined gas law equation. The equation is given as follows;P1V1/T1 = P2V2/T2where P1 is the initial pressure, V1 is the initial volume, T1 is the initial temperature, P2 is the final pressure, V2 is the final volume, and T2 is the final temperature.We will assume that the initial temperature and final temperature are constant, and therefore, we can cancel them from the equation. Thus, the equation becomes;P1V1 = P2V2We can rearrange the equation to solve for V2 as follows;V2 = (P1V1)/P2Substituting the given values, we get;V2 = (1.0 atm * 12,000 L)/1.4 atmV2 = 8,571.43 L.

For more questions on pressure

https://brainly.com/question/24719118

#SPJ8

Explanation:

During condensation reaction, two molecules combine to form a single molecule with the loss of a small molecule; in dehydration reaction, this lost molecule is water.

The reaction is a small molecule formed from the atoms removed from a single reactant molecule this reaction is knowing as condensation reaction.

Essentially, this is the reverse process of vaporization. In order for water vapor to undergo the process of condensation, which is the change from a gaseous state to a liquid state, it is necessary for a reduction in its temperature to occur until it reaches the dew point or an increase in the pressure to which it is subjected.

In this case the condensation reaction are when two molecules combine to form a single molecule with the loss of a small molecule, in dehydration reaction, this lost molecule is water.

See more about condensation at brainly.com/question/15563071

#SPJ2

Answer:

poop

Explanation:

If all the eg orbitals are full, it is impossible to promote an electron from the t2g level to the eg level because there are no empty energy states.

The energy of the photon must be sufficient to promote an electron to a higher energy level.2. Draw the crystal field splitting diagram for octahedral Zn^2+ and Ca^2+ complexes. Predict the color of aqueous solutions of Zn^2+ sals and Ca^2+ salts. Does it matter if the complexes are high-spin or low-spin. The crystal field splitting diagram for Zn2+ and Ca2+ are as follows: Zn2+:

It is colorless in both high-spin and low-spin complexes. Ca2+:

In high-spin complexes, it is colorless, but in low-spin complexes, it is purple.

To summarize, the color of Zn2+ complexes is colorless in both high-spin and low-spin complexes. The color of Ca2+ complexes is dependent on the spin-state, being colorless in high-spin complexes and purple in low-spin complexes.

To know more about orbitals visit:

https://brainly.com/question/32355752

#SPJ11