Why is the trend of ionization energy across a period?

The emission spectrum of hydrogen consists of discrete wavelengths rather than a continuum because of the quantization of energy levels in the hydrogen atom.

What is emission spectrum?

An emission spectrum is a spectrum of electromagnetic radiation emitted by a substance as a result of electronic transitions from a higher energy state to a lower energy state. In an emission spectrum, a sample of a substance is excited by an external energy source, such as heat, light, or electricity, which causes electrons in the substance to be elevated to higher energy levels.

According to quantum mechanics, electrons in an atom can occupy only certain energy levels, and they cannot occupy levels in between.

When an electron in an excited state of the hydrogen atom returns to its ground state, it releases energy in the form of a photon with a specific wavelength that corresponds to the difference in energy between the two states.

Since only certain energy levels are allowed in the hydrogen atom, only certain wavelengths of photons can be released, leading to the discrete line spectrum rather than a continuous spectrum.

To learn more about emission spectrum:

https://brainly.com/question/12472637

#SPJ4

Solids that are soluble in a liquid are said to be soluble solids. Solids that cannot dissolve in water are known as insoluble solids.

I Compounds that disintegrate in a particular liquid to form a solution are known as soluble solids. I Solids that cannot dissolve in the water are referred to as insoluble solids. These insoluble substances either floating or sink when added to water, but they do not mix with that as well.

Something like this that won't disintegrate in a solvent is said to be insoluble. Rarely does a solute not dissolve at all. However, many compounds are not very soluble. Examples include sand, lipids, timber, metals, and plastic.

To know more about insoluble visit:

brainly.com/question/24300575

#SPJ4

The number of moles of carbon dioxide, CO₂ are equal to the 0.0306 mole.

We have a molecule of carbon dioxide, CO₂ with one carbon atom contributes 12.01 g/mol, the two oxygens together contribute (2)(16.00) = 32.00 g/mol. The molar mass of carbon dioxide is equals to 44.01 g/mol. Let the required number of moles of carbon dioxide be "n". From above data that 1.84× 10²³ CO₂ molecules. So, one mol = 6.022× 10²³molecules then Number of moles = molecules/6.022× 10²³ molecules/mol. Now, to determine the moles in 1.84× 10²² molecules of carbon dioxide :

n = 1.84× 10²² /6.022× 10²³

n = 0.030 mol of CO₂ are present

Hence, the required number of moles is 0.030 mol.

To learn more about number of moles , refer:

https://brainly.com/question/13314627

#SPJ4

A regular 12-oz beer is about 5% alcohol. This works out to about 14. 03 grams of alcohol per beer. If the driver drank two beers, he consume 28.06 grams of alcohol.

A regular 12-oz beer has 5% alcohol by volume. According to this, a beer contains roughly 14.03 grams of alcohol.

So the mass alcohol in two beers would be

mass alcohol in 2 beers= 2 x mass alcohol in 1 beer

Mass alcohol in 2 beers=14.03 grams of alcohol x 2 = 28. 06 gram

Therefore, 5% alcohol makes up a typical 12-oz beer. According to this, a beer contains roughly 14.03 grams of alcohol. Two beers would equal 28.06 grams of alcohol for the driver.

Learn more about alcohol at https://brainly.com/question/6452985

#SPJ4

A. The integrations for peaks will likely look "off" with respect to one another., is the correct option.

NMR spectroscopy (NMR spectra) is a analytical tool used in chemistry and biochemistry to determine the structure and composition of a molecule by measuring the magnetic properties of its nucleus. NMR spectra provide information about the number of different types of atoms in a molecule, the environment of these atoms, and the distances and angles between them. This information is then used to generate a detailed picture of the molecule's structure and how it is bonding to other molecules.

To know more about molecule, visit:

https://brainly.com/question/11405437

#SPJ4

Potassium iodide is used to avoid the loss of iodine due to oxidation from salts

What are compounds ?

A  compound is a substance consisting of two or more elements chemically combined in a fixed ratio. They differ from mixtures consisting of two or more substances physically mixed without chemical bonding. Compounds have their own physical and chemical properties that differ from those of individual elements. For example, the compound water (H2O) has different properties (boiling point, density, solubility, etc.) than its components hydrogen (H2) and oxygen (O2).

Compounds are formed by chemical reactions in which atoms of different elements combine to form new substances. The formation of a compound can be represented by a chemical formula that indicates the type and number of atoms in the compound.

To know more  about compounds ,  click the link below ;

brainly.com/question/26487468

#SPJ4

Consider 5.00 L of a gas at 365 mmHg and 20.∘C . If the container is compressed to 2.70 L and the temperature is increased to 33 °C, the new pressure, P2 , inside the container is 563.372 mm Hg.

The ideal gas law, also known as the general gas equation, is the state equation for a hypothetical ideal gas. Although it has several limitations, it is a good approximation of the behavior of many gases under many conditions.

Apply ideal gas law

P1V1/T1 = P2V2/T2

365 × 5 / 293 = P2 × 2.70 / (33+273)

P = 365 × 5 /293 /2.70 × (33+273)

P = 563.372 mm Hg

Thus, the new pressure, P2 , inside the container is 563.372 mm Hg.

To learn more about an ideal gas law, follow the link;

https://brainly.com/question/30458409

#SPJ1

The presence of polar bonds in a molecule does not imply the presence of a molecular dipole. Carbon dioxide and carbon tetrachloride, for example, have polar bonds but no net molecular dipole.

Bond polarity is connected to each bond's particular polarity in a molecule, but molecular polarity is the total of all the bond polarities in the molecule. This is the difference between bond dipoles and molecular dipoles.

A molecule will become nonpolar if it is entirely symmetric, as the dipole moment vectors on each molecule will cancel each other out.

Thus, a molecule can have bond dipoles but not have a molecular dipole.

To learn more about the molecular dipoles, follow the link;

brainly.com/question/12020949

#SPJ1

The cesium ion is the darker atom and the chloride ions are the lighter spheres in the unit cell that empirical formula of the salt is CsCl.

A compound's empirical formula yields the simplest whole number ratio of the elements in the compound. Cesium (Cs) ions and chloride (Cl) ions are present in the cesium chloride salt. The unit cell seen in the figure has one cesium ion and one chloride ion, meaning that the two components in the compound are in a 1:1 ratio. As a result, the salt's empirical formula is CsCl.

To know more about cesium, click here: brainly.com/question/29132590

#SPJ4

Across the unit cell's body diagonal, cations and anions are in contact, with the ammonium ion's radius being 167 pm.

The distance between successive atoms of the same element is divided in half to determine the atomic radius of a molecule. Measuring the atomic radii of chemical elements is difficult since their atomic scale is on the order of 1.210-10 m. Since the electron cloud that makes up the atomic shell is ill-defined, it is difficult to determine an atom's size. The size of an atom can thus be inferred to be essentially impossible to quantify. The radius of an atom increases directly as the atomic number increases. The radius of each atom closest to you increases as you descend a particular column of the periodic table. As you move down the periodic table, the proportion of complete electron shells increases, resulting in a larger size.

Learn more about The atomic radius here:

https://brainly.com/question/29507973

#SPJ4

Is the subscript "1" usually understood. Therefore, option C is correct.

A subscript is a character that is printed slightly below and to the side of another character, typically a letter or number. Subscripts are frequently used in chemical equations. A scientist would write the water formula, H2O, with the 2 lower and smaller than the letters on either side.

Subscripts indicate the proportion of atoms of various elements in the compound. Because the molecule contains four hydrogen atoms, the subscript 4 follows the symbol for hydrogen. When a symbol in a formula lacks a subscript, the number 1 is understood.

Thus, option C is correct.

To learn more about the subscript, follow the link;

https://brainly.com/question/16019591

#SPJ1

The  one of the  statements is true is the correct option is B) The density of the sphere and cube are not the same because their volumes and masses are different.

The density is define as mass per unit the volume. The formula to calculate the density is as follows :

Density = mass / volume

It is clear from the formula that , the density is depends on the mass and the volume that occupied it. The S.I unit of the density is kg/ m³. the mass increases the density of the substance also increases. If the volume increases the density is decreases.

To learn more about density here

https://brainly.com/question/26252172

#SPJ4

The number of cl- ions are there in 400.5 grams of alcl3 is 9.000 ions.

An atom or molecule with a net electrical charge is known as an ion. Conventionally, the charge of an electron is thought to be negative. This charge is equivalent to and opposite from the charge of a proton.

Lets start by calculating molar mass of AlCl₃

Molecular mass of Aluminium is 27 and that of Chlorine is 35.5

Al = 1 x 27 = 27

Cl = 3 x 35.5 = 106.5

AlCl₃ = 27 + 106.5

AlCl₃ = 133.5

The number of ions of Cl using proportions is

                  133.5 grams of AlCl₃ ------------- 3 ions of Chlorine

                  400.5 grams of AlCl₃ ------------   x

                  x = (400.5 x 3) / 133.5

                  x = 9

Therefore, the number of cl- ions are there in 400.5 grams of alcl3 is 9.000 ions.

Learn more about Number of ions:

https://brainly.com/question/14256158

#SPJ4

Theoretical yield of water is 50.4g. Theoretical yield of a reaction is achievable if the limiting reactant has been identified.

In a chemical reaction, the limiting reactant, also known as the limiting reagent, controls how much product is produced. Calculating the theoretical yield of a reaction is achievable if the limiting reactant has been identified.

Because elements and compounds in an equilibrium chemical equation react in accordance with their mole ratios, there must be a limiting reactant.

2H[tex]_2[/tex] + O[tex]_2[/tex] [tex]\rightarrow[/tex] 2H[tex]_2[/tex]O

moles of H[tex]_2[/tex] = 11 gram/ 2=5.5moles

moles of O[tex]_2[/tex] = 45gram/32=1.40moles

O[tex]_2[/tex] is the limiting reagent

moles of water = 2.80moles

theoretical yield of water= 2.80×18=50.4g

Therefore, theoretical yield of water is 50.4g.

To learn more about  limiting reactant, here:

https://brainly.com/question/15267094

#SPJ1

A sample of baking soda, NaHCO₃, always contains 27. 37% by mass of sodium, 1. 20% of hydrogen, 14. 30% of carbon, and 57. 14% of oxygen. These data illustrate the law of constant proportion.

According to the law of constant proportions, components in chemical compounds are present in a fixed mass ratio. This suggests that no matter the source, any pure sample of a chemical will always have the same elements that are present in the same ratio by mass. For instance, pure water will always have a set mass ratio of hydrogen to oxygen (a gramme of water consists of approximately 0.11 grammes of hydrogen and 0.88 grammes of oxygen, the ratio is 1:8).

Some exceptions to this rule exist. Different samples have different elemental ratios in non-stoichiometric substances. The law of constant proportions does not apply to these compounds, hence they are an exception. The law of definite proportions can also be broken by samples of elements with varied isotopic compositions since different isotopes of an element have different weights. The law of constant proportions is also known to be broken by some natural polymers.

To know more about law of constant proportion from the link

brainly.com/question/12768510

#SPJ4

NI3 has the highest molar mass = 394.707 grams

Molecular mass = Mass of the atom x the number of atoms

Atomic mass of H = 1.00 amu

O = 15.99 amu

P = 30.97 amu

= 3(Mass of H) + 1(Mass of P) + 4(Mass of O)

= 3(1)+ 1(30.97) + 4(15.99)

= 3 + 30.97 + 63.96

= 97.93 gram

= 1 (mass of N) + 3(mass of I)

= 1(14.0067)+3(126.9)

= 394.7067 grams

= 1(atomic mass of Fe) + 3(atomic mass of Cl)

= 1(55.845)+3(35.45)

=  55.845 + 106.35

= 162.195 grams

KCl = 1(mass of K) + 1(mass of Cl)

= 1(39.09) + 35.45

= 74.54 gram

Out of these NI3 has the highest molar mass = 394.707 grams

Hence NI3 is a correct answer.

To know more about molar mass follow link

https://brainly.com/question/12127540

#SPJ4

Magnesium chloride, with the inorganic compound MgCl2, is an inorganic compound. It produces hydrates MgCl2nH2O, where n may be any value around 1 and 12. These salts are solids which are either colorless or white and are very soluble in water. These substances, both in their compounds and in their solutions, are found in nature and have many important uses. The principal precursor of magnesium oxide, which is manufactured on a vast scale, is anhydrous magnesium chloride. The form that is most widely obtainable is calcium magnesium bromide.

The formula for magnesium chloride is MgCl2. This signifies that it has two chloride atoms and one magnesium atom in it. It is a solution that combines either magnesium plus chlorine. It can be obtained from natural from the sun absorption of saltwater.

Despite the fact that the MgCl2 has a greater lattice energy than NaCl, let's examine their melting points. The melting points show a weaker MgCl2 lattice. Furthermore, MgCl2 hydroxyl radicals in water but NaCl does not! This demonstrates that MgCl2's lattice has a covalent character, this indicates that the ionic proportion is smaller.

To know more about Magnesium Chloride click here

brainly.com/question/28323252

#SPJ4

Therefore option C is the correct option.

The gravitational force that binds the atom's constituent particles together is known as intermolecular force. The force that unites the many parts when they combine is the one that is being discussed in the inquiry.

Ion-dipole forces, hydrogen bonds between molecules, dipole-dipole forces, and van der Waals forces are the intermolecular forces listed in the answer choices in order of strength to weakness. The strongest intermolecular attraction is between dipoles. They exist between all types of molecules, whether ionic or covalent, polar or non-polar, and are the weakest intermolecular forces.

Compared to liquids and gases, solids typically exhibit the highest intermolecular forces. Because the particles are packed closely together, solids are incompressible and dense. The London dispersion force is the least powerful intermolecular force.

Dispersion Force of London Because it is a transient attractive force that causes a transient dipole, the London dispersion force is also known as the induced dipole. Nonpolar monatomic gases can exhibit London dispersion.

For such more question on intermolecular force,

https://brainly.com/question/13588164

#SPJ4

In a continuous reactor, the materials are transported as a stream that is always running, allowing the reactants to be continuously supplied into the reactor and producing a stream of product in the process.

Along with that, it ought to be necessary to know the mole counts of unreacted species. The amount of products created from each reactant can be compared in order to determine the limiting reactant.

When producing huge amounts of chemicals, a continuous reactor—also called a flow reactor—is employed.

Therefore, The mole number of the reactant and the finished product should be computed in order to determine the limiting reactant in a chemical reaction.

Learn more about limiting reactant here:

https://brainly.com/question/14225536

#SPJ4

HCl is used instead of plain deionized water in p-phenetidine in amide synthesis of acetophenetidin because HCl's polarity contributes to a reaction driven to the right, it is used for the acid-base reaction rather than water. It protonates the amine group, allowing it to dissolve easily.

An acid-base neutralization reaction is represented as a double-replacement reaction in this traditional representation. For example, the reaction of hydrochloric acid (HCl) with sodium hydroxide (NaOH) solutions yields a solution of sodium chloride (NaCl) and a few extra water molecules.

When acid and base react, they produce salt and water. Water and salt are both neutral, which means that when acid and base react, they neutralize each other. As a result, it is known as a neutralization reaction.

Thus,  HCl's polarity contributes to a reaction driven to the right.

To learn more about an acid-base reaction, follow the link;

https://brainly.com/question/3069273

#SPJ1

The saturation is 33%, the total unit weight is 107.5 lbs/ft^3, the void ratio is 0.43 and the porosity is 30%.

To calculate the saturation, we need to find the weight of water in the soil, which is 25% of the total weight of 215 lbs. So, the weight of water is 25/100 * 215 lbs = 53.75 lbs.

Next, we find the weight of solids in the soil, which is 215 lbs - 53.75 lbs = 161.25 lbs.

The saturation (S) is the ratio of the weight of water to the weight of solids in the soil and is calculated as follows:

S = 53.75 lbs / 161.25 lbs = 0.33 or 33%.

The total unit weight of the soil can be calculated using the following formula:

γ = (W_water + W_solids) / V

where W_water is the weight of water, W_solids is the weight of solids, and V is the volume of the soil.

Substituting the values, we get

γ = (53.75 lbs + 161.25 lbs) / (2 ft^3) =

= 215 lbs / (2 ft^3) = 107.5 lbs/ft^3

The void ratio (e) is the ratio of the volume of voids in the soil to the volume of solids in the soil, and can be calculated as follows:

e = V_voids / V_solids = (V - V_solids) / V_solids = (V - W_solids / γ_solids) / (W_solids / γ_solids)

Substituting the values, we get

e = (2 ft^3 - 161.25 lbs / 2.7) / (161.25 lbs / 2.7) = 0.43

Finally, the porosity (n) is the ratio of the volume of voids in the soil to the total volume of soil and is given by:

n = V_voids / V = e / (1 + e) = 0.43 / (1 + 0.43) = 0.43 / 1.43 = 0.30 or 30%.

Find out more about Saturation

brainly.com/question/30193270

#SPJ4

If the volume and pressure of the gas are known, the ideal gas law may determine the temperature of the hydrogen gas.

According to the ideal gas law, the ideal gas's pressure and absolute temperature are both exactly proportional. PV = nRT. Where P represents the gas pressure V is the gas's volume. The number of gas moles is n. T is the gas's temperature. As a result, we can draw the conclusion that according to the ideal gas law, the hydrogen gas's temperature can be calculated if its volume and pressure are known. Ideal gas law states that for 1 mole of an ideal gas, the product of Pressure and Volume equals the product of Temperature and Universal Gas Constant R. The symbol for the equation is PV = nRT. No gas is ideal; hence it is only relevant for ideal gases. At STP, all gases are assumed to function optimally.

Learn more about The ideal gas law here:

https://brainly.com/question/25290815

#SPJ4

B: "Digesting a pizza" is an example of a chemical change.

Chemical changes occur when chemical reactions take place and result in the formation of new substances with different chemical and physical properties. The process of digestion of food involves various chemical reactions such as hydrolysis, oxidation, and reduction, which break down complex food molecules into simpler compounds that can be absorbed and used by the body. The original pizza molecules are transformed into new substances and this constitutes a chemical change.

You can learn more about chemical change at

https://brainly.com/question/1222323

#SPJ4

Answer:

how easily a liquid flows

There is the size dependence for the strength of the ceramics but not for the metals because in the ceramic the covalent and the ionic bond is present and in the metals metallic bond is present. The metal bond is weaker.

In the ceramics, the strength is the dependence on the size because of their brittle nature and the microcracks present on it. In the metals,  the strength is not depend on the size because of their ductile nature and metals have  ability to deform the plastically without any  breaking.

Thus, the ceramics are the size dependence because of their tough nature and the metals have the ductile nature.

To learn more about ceramic here

https://brainly.com/question/30451190

#SPJ4

Glycerol has a density of ounces/quart equal to. The mass of a sample of glycerol is grams. 1 ounce equals 28.4 grams.

Glycerol is a colourless, odourless, thick liquid generated from both animal and plant fats. It is also known as glycerin or glycerine. It is always found in a wide range of goods, including medications, personal hygiene products, food, and drinks. It is a natural moisturizer, fluid, and lubricant and is a key component of many fats.

Glycerin is a type of carbohydrate known as a polyol, along with other sugar alcohols including sorbitol and erythritol. Glycerin feels sweet, just as sugar alcohols, which I've already discussed. Many living creatures require the sugar alcohol glycerol to survive. It is a part of lipids like phospholipids and glycerides, among others. Glycerol joins with fatty acids to create glycerides, which can act as an energy source.

To know more about glycerol, visit

brainly.com/question/29240183

#SPJ1

Answer:

The tissues decompose at a slower rate at lower temperatures.

Explanation:

This is my best guess but I think answer is tissue decompose slower rate at low temperature. This is why we in medicine we store specimens at very low temperature so we can do research on it at a later time but they eventually go bad. Low temperature slow down enzymes and proteins thus breakdown is slower rate.

The order of the reaction is 3.

For nth order reaction, the unit of the rate constant is liter

Litre^n−1 mol^1−n t^−1

Hence, n−1=2

n=1+2=3

The unit of rate constant for a reaction is liter²1/mol²1/t

Hence, the order of the reaction is 3.

What is the order of reaction?

To know more about order of reaction, click the link given below:

https://brainly.com/question/1769080

#SPJ4

The salt's chemistry is sodium phosphate. Na₃PO₄ Na3PO4 is the chemical name for sodium phosphate, and its molecular weight is 163.94 g/mol.

Is sodium phosphate N3PO4?

Sodium phosphate: Sodium phosphate, which has the chemical formula phospho soda Radiologists are familiar with Na3PO4 since it is frequently used as a cleanser before a double distinction barium enema.

Why is the sodium phosphate formula?

Na3PO4 is the chemical name for sodium phosphate, and its molecular weight is 163.94 g/mol.

To know more weight about:

https://brainly.com/question/10069252

SPJ4

Cleaning supplies for spills should always be disposed of as hazardous trash. Therefore, it is necessary to store and package items like sorbent materials and cleaning supplies for the disposal of hazardous waste.

The term "equipment" most frequently refers to a group of items or other things that are regularly employed to accomplish a certain goal. Equipment needs vary depending on the work.

The plural form of the word equipment is absent. There is no term "equipments," it is only used in the singular, and it goes with a singular verb. There are about 100 common words in this category, which are referred to as "noncount nouns" or "mass nouns."

To know more about Equipment visit:

https://brainly.com/question/30230359

#SPJ4