If the following elements are arranged by increasing atomic radius (from smallest to largest); F, B, Be, O, the correct order would be...

The mass of an ion that has 13 electrons, 12 protons, and 14 neutrons is 26 u (option C).

Mass number of an element is the total number of protons and neutrons in an atomic nucleus.

The number of protons and electrons of an atom is the number of positively charged and negatively charged subatomic particles in an atom respectively.

According to this question, an ion has 13 electrons, 12 protons, and 14 neutrons. The mass number can be got by summing the number of neutrons and protons in the atom as follows:

mass no = 12 + 14 = 26u

Therefore, 26 u is the mass of the ion described in this question.

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Molecular compounds are formed by covalent bonds between two nonmetal atoms. The formula for molecular compounds is AB, where A and B are the two nonmetal elements.

Molecular compounds are formed when two or more atoms join together to form a single molecule. They are held together by a strong chemical bond known as a covalent bond. The atoms can be from the same element or from different elements. Examples of molecular compounds include water, carbon dioxide, and methane. Molecular compounds are essential for life and are found in many everyday products. For example, table sugar is a molecular compound made up of carbon, hydrogen, and oxygen atoms.

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Answer:

Explanation:

Greetings !!!

First let's define the meaning of molecular mass.

Molar mass M is the mass of a chemical compound divided by its amount-of-substance measured in moles. It is defined as MB = m/nB, where m is the total mass of a sample of pure substance and nB is the amount of substance B given in moles. The definition applies to pure substance.

For the first question

solution

The atomic mass of carbon(C)= 12

The atomic mass of Hydrogen(H)= 1

The atomic mass of Oxygen(O)= 16

Molecular mass of sucrose(Table sugar)C₁₂H₂₂O₁₁=

12×(The atomic mass of carbon(C)) + 11×(The atomic mass of Hydrogen(H)) + 11×(The atomic mass of Oxygen(O))

Molecular mass of sucrose = 12×12+22×1+11×16

=144 + 22 + 176

=342g/mol

Secondly, when we look at percent composition first let's define it :-

So, let's work on the questions

%Compositions

Carbon= 144/342×100 = 42.1%

Hydrogen = 22/342×100= 6.43%

Oxygen = 176/342×100= 51.46%

And to be more sure add those percent values

Thus, 42.1%+6.43%+51.46%= 99.99%

If you have any questions and unclear ideas tag it on comments

Hope it helps!!

This type of irony called situational irony occurs when the expected outcome of a situation is completely opposite of what actually happens.

It is an unexpected twist of fate, where the actual outcome is in direct conflict with what was originally intended or expected. This type of irony is often used in literature to create suspense and humor, as the audience is often shocked and surprised by the unexpected ending.

Situational irony can also be used to highlight a greater theme or message in a story, such as the idea that life can be unpredictable and that sometimes the outcome of a situation is completely unexpected.

This type of irony is also often used in comedy, as the audience is taken by surprise when a joke is turned on its head and the expected outcome does not happen.

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Nitrogen (N2) is a molecule that has 14 protons.

Nitrogen is a colorless, odorless, and tasteless gas that makes up about 78% of the Earth's atmosphere. Nitrogen is an important component of many compounds, including proteins, DNA, and RNA, and is essential for life on Earth.

Nitrogen gas is also used in a variety of industrial applications, including the production of fertilizers, explosives, and the preservation of food. Nitrogen is a non-metallic, diatomic gas that exists in two stable isotopes, 14N and 15N.

Nitrogen gas is relatively unreactive, due to the strong triple bond between the two nitrogen atoms in a nitrogen molecule (N2). However, under certain conditions, such as high temperatures or the presence of catalysts, nitrogen can react with other elements to form compounds such as ammonia (NH3), nitric oxide (NO), and nitrous oxide (N2O).

In the Earth's atmosphere, nitrogen plays a key role in the nitrogen cycle, a process by which nitrogen is converted between different chemical forms. Nitrogen gas is converted to ammonia by nitrogen-fixing bacteria, and then to nitrite and nitrate by microorganisms in the soil.

Overall, Nitrogen is a very important element in our planet and many industrial processes.

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The electrophilic addition reaction is the reaction in which electrophile attack the substrate. The compound containing double or the triple bond broken into the sigma bond.

The electrophilic addition reaction in which the compound that contains the double or the triple bond , broken in to the sigma bond. The some of the example of the electrophilic reaction of the alkene is given below :

CH₂ = CH₂  +   HX  ---->   CH₃ - CH₂X

CH₂ = CH - CH₃  +   HX  ---->  CH₃ - CHX - CH₃

The proton H⁺ will make a bond with carbon atom of the carbon = carbon double bond. The halogen ion forms the bond with the intermediate carbocation produces the final product.

The question is incomplete, i gave general answer according to my knowledge.

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The concept used to solve this problem is based on type of orbitals. The orbitals can be atomic, molecular and hybrid.

The atomic orbitals are the areas of space around the nucleus of an atom where an electron is expected to be found. The hybrid orbitals are the orbitals which are formed by mixing of atomic orbitals. The molecular orbitals are the orbitals which have bonding and antibonding orbitals.

Step: 1

The orbitals s, p, d and f are atomic orbitals. The electrons can be find in atomic orbitals. the electrons of an atom can be filled in s, p, d and f orbitals

Step: 2

The orbitals sp,sp2,sp3 and sp3d are hybrid orbitals. The hybrid orbital is formed by combination of atomic orbital.

Step: 3

The molecular orbitals are σ2s and π2p. The molecular orbitals are made up of bonding and antibonding orbitals.

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Answer:2.7

Explanation:

The theoretical yield in this instance is 280 kg, however the actual yield is only 70 kg. Consequently, the percent yield is calculated as follows: 25% = 70/280 x 100.

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There is only a single carbon atom and four hydrogen atoms in the model.

In science, when we talk about a model, we know that what we mean is a representation. It is actually something that stands in for another. We can be able to use a model as a guide that enables us to be able to visualize what the actual molecule would look like.

We can see that in the compound that has been laid out here, we would have about four atoms that are from hydrogen while we would only have one atom from carbon in the compound.

Thus, the blue ball stands for carbon while each of the red balls stand for hydrogen atoms in the model shown.

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Answer: Example: Find the molecular of the water molecule. Solution: The formula of the water molecule is H₂O. The atomic mass of hydrogen = 1 amu. The atomic mass of oxygen = 16 amu. Molar mass of water = 2 *1 + 16 = 18 amu. Example: What will be the relative molar mass of the hydrogen molecule. Solution: Hydrogen molecule represented by H₂.

hope this works

A chemical reaction has reached the equilibrium when b.  the rate of the forward reaction equals the rate of the reverse reaction.

The chemical reaction is said to be in the equilibrium when the rate of the forward reaction is equals to the rate of the backward reaction. . The equilibrium is the state of the balance. The chemical equilibrium is the state of the reaction when the the rates of the forward and the rates of the backward reaction s are equal.  

             forward

A   +   B      ⇄       C

             backward

The chemical equilibrium are of the two types :

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Answer: c (specific heat capacity) = 0.4369243949 J/g *C

Or with Significant digits: 0.44 ( 2 sig digs because of temperature)

Explanation: So this is a simple calorimetry question, so you have to consider this formula, ΔH = -Q  and since Q = mcΔt || Therefore you get this equation ΔH = - (mcΔt). So you want to solve for c, now rearrange. Once you do that, you will end up with c = - (ΔH/ -m · -Δt)

Now Plug in the numbers

Then you will get 0.44!

Hope that helped and remember significant digits! Good luck!

Answer:

Both neutrons and protons

Explanation:

Both neutrons and protons are assigned as having masses of 1 amu each. In contrast, the electron has a negligible mass of . 0005 amu.

To make 250.0 mL of something like a 0.500 mol/L sulfuric acid solution, 0.125 L of a 1.00 mol/L sulfuric acid solution is needed.

can cause blindness and irritate & irritate the skin and the eyes. Exposures may result in pulmonary edema, a genuine condition when fluid builds up in the lungs. Headache, nauseousness, and vomiting can all result after exposure.

Another important ingredient in the chemical process industries is sulfuric acid. It is most frequently employed in the production of fertilizer, but it is also crucial for the processing of minerals, oil, wastewater, and chemicals. H2S04, often known as sulfuric acid, is a corrosive chemical that harms your skin, eyes, teeth, & lungs. Extreme exposure can be fatal.

n1 = n2

CM = n / V

n = CM x V

CM1 x V1 = CM2 x V2

1.00 x V1 = 0.500 x 0.2500

V1 = (0.500 x 0.2500) / 1.00

V1 = 0.125 L

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TRUE , Auxiliary containers must be labeled, excluding a few circumstances. LABEL IT IF If a secondary container was transportable, for instance, you are frequently exempt from label requirements.

Chemicals are typically transferred from primary container to secondary containers while within the workplace. These smaller containers can be spray bottles, containers, aliquots, or jars. OSHA states that secondary containers must adhere to the labeling specifications.

The identification of the product's hazardous substances and any physical, health-related, nor environmental risks that may be posed by its constituent parts are the two pieces of information that must be provided on the secondary labels.

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The Born -Haber cycle is  used to find out the lattice energy and formation enthalpy of a reaction from its individual steps. The total energy of the cycle is zero.

According to Hess law, we can split a reaction into several steps. each steps involves the phase transitions, ionization of constituent elements.

The energy required form a solid compound from its constituent elements in gaseous state is called the lattice energy of the compound. Here the formation of KBr from gaseous K and Br is given. Thus the enthalpy change is called lattice energy.

The lattice energy plus the formation energy is called the total energy in the reaction. Where, the enthalpy change of the cycle is zero. The Born -Haber cycle of the given reaction include first reaction with the phase transition of each elements and their ionization.

The ionized atoms combine together to form the product, which is written as the overall reaction in the top.

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Ionic compound Cation Anion

NaCl Na^+ Cl^-

CrCl4 Cr^3+ Cl^-

NH4Br NH4^+ Br^-

Cu(OH)2 Cu^2+ OH^-

CoS Co^2+ S^2-

Please note that in CrCl4 the cation is Cr^3+ not Cr^4+

In the table above, the first compound is NaCl. The sodium cation has a positive charge of +1 and the chloride anion has a negative charge of -1, which gives the compound a neutral charge.

The second compound is CrCl4. The Chromium cation has a positive charge of +3 and the chloride anion has a negative charge of -1, which gives the compound a neutral charge as well.

The third compound is NH4Br. The ammonium cation has a positive charge of +1 and the bromide anion has a negative charge of -1, which gives the compound a neutral charge.

The fourth compound is Cu(OH)2. The Copper cation has a positive charge of +2 and the hydroxide anion has a negative charge of -1, which gives the compound a neutral charge.

Finally, the fifth compound is CoS. The Cobalt cation has a positive charge of +2 and the sulfide anion has a negative charge of -2, which gives the compound a neutral charge.

It's important to note that the charge of the cations and anions must match for the compound to be neutral, if not the compound will have a net charge.

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C12H22O11 has a mass composition of 42.1 percent, 6.48 percent hydrogen, and 51.4% oxygen.

By comparing an element's molar mass to the total molar mass of the compound as a whole, mass percent composition can be calculated. The final result of the calculation is a percentage that can be used to compare various compounds.

The exact number of atoms in the compound is shown by this formula.

The equation to calculate the percentage composition by mass of sodium is given below:

The exact number of atoms in the compound can be seen in this formula: mass of sodium = (22.99 g/mol) x (1 mole NaOH / 40.00 g/mol) = 0.5747 g % mass of sodium = (0.5747 g / 40.00 g/mol) x 100 = 1.43 % We can use the following equation to determine the percentage of the compound composed of oxygen by mass:

(mass of oxygen / molar mass of NaOH) x 100 = oxygen percentage = (16.00 g/mol) x (1 mole NaOH / 40.00 g/mol) = 0.400 g Oxygen percentage = (0.400 g / 40.00 g/mol) x 100 = 1.00% We can use the following equation to determine the percentage of hydrogen by mass:

(mass of hydrogen / molar mass of NaOH) x 100 = % mass of hydrogen % mass of hydrogen = (1.01 g/mol) x (1 mole NaOH / 40.00 g/mol) = 0.02525 g % mass of hydrogen = (0.02525 g / 40.00 g/mol) x 100 = 0.063% Na, 1.00% O, and 0.063% H The compound C12H22O11 has a  We can use the same approach as before to determine the percentage of C12H22O11's elements by mass.

Mass of Carbon = (1212.01) = 144.12 g Mass of Hydrogen = (221.01) = 22.22 g Mass of Oxygen = (11*16) = 176 g % Mass of Carbon = (144.12 / 342.30) x 100 = 42.1% % Mass of Hydrogen = (22.22 / 342.30) x 100 = 6.48% % Mass of Oxygen = (176 / 342.30) x 100.

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The carbon engineering technologies forward the carbon dioxide capturing methods. The first step involved in the air contactor is given below:

[tex]\rm CO_{2} + 2 KOH \rightarrow H_{2}O + K_{2}CO_{3}[/tex]

Nowadays evolution of greenhouse gases such as carbon dioxide is causing serious issues such as global warming. Industries and factories are uncontrollably release these gases to the atmosphere.

Carbon engineering designs the techniques for direct capture of carbon dioxide. The methods include an air contactor with the reaction given above and a pelletizer where, the KOH and calcium carbonate produces calcium hydroxide.

A calcinator decomposes the calcium carbonate forming the carbon dioxide  which is  captures.

[tex]\rm CaCO_{3} \rightarrow CO_{2} + CaO[/tex]

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To make the buffer solution, 0.198 moles of sodium acetate are required (from which the conjugate base will be formed). The correct response is (C) 0.198 moles.

A highly important unit of measurement used by chemists is the mole. A mole of anything means you have 602,214,076,000,000,000,000,000 of that thing, just like a dozen eggs equals twelve eggs. Chemists use moles to measure incredibly small substances like atoms, molecules, and other particles.

How many moles of a chemical are there? The substance's weight should be determined. See a periodic table to find its atomic or molecular mass. Subtract the weight from the mass of the atoms or molecules.

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The experiment will only result in a maximum of 280 grams of iron (Fe) being produced.

The mineral iron is essential to our bodies for a number of processes. As an illustration, iron is a constituent of hemoglobin, a chemical that transports oxygen from our lungs to each and every tissue in our bodies. It helps our muscles get oxygen and store it. Iron is also present in many other enzymes and enzymes. Your body needs iron in the right amount.

Another form of protein called hemoglobin, which is present throughout red plasma cells and carries the oxygen from your lungs to every of the body, contains a sizable quantity of iron. If the body doesn't have enough iron, it won't produce enough red blood cells to deliver oxygen, which leads to fatigue.

equation of the reaction:

Fe₂ O₃ + 2Al --> 2Fe + Al₂ O₃

mole ratio of Fe₂ O₃ to Al = 1:2

5 moles Fe = 5 x 56

= 280 grams

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The pressure of a gas is directly proportional to its temperature. Hence, as temperature decreases  pressure decreases. Therefore, option D is correct.

What is Gay- Lussacs law?

According to Gay- Lussacs law at constant volume, the pressure of a gas is directly proportional to the temperature.

Hence, P/T = constant.

Let P1 and T1 be the initial pressure and temperature and P2, T2 be the final quantities, then

P1/T1 = P2/T2

Given P1 = 1 atm

T1 = x ° C

T2 = x/2° C

Then P2 = P1 T2/T1

P2 = 1 × x/2° C / x° C

     = 1/2 atm

That is one half of the initial pressure.

Therefore, the pressure of the gas reduces to half when temperature is reduced to half. Thus, option D is correct.

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Answer:

Percentage Composition from Formulas. A more complex example is sucrose (table sugar), which is 42.11% carbon, 6.48% hydrogen, and 51.41% oxygen by mass.

Explanation:

50 grams of AgCl (Silver Chloride) will produce 39.2 grams of silver when the AgCl is processed.

Silver chloride (AgCl) is an inorganic compound composed of silver and chlorine. It is a white powder or crystalline solid that is insoluble in water, alcohol, and other organic solvents. Silver chloride is used mainly in photography and in the production of specialized glass. Silver chloride has been used in the past to make silver plating, silver salts and silver jewelry. Silver chloride has been used in various medical treatments, including eye drops and ointments, as an antiseptic and to treat skin disorders.

The process involves reacting the AgCl with either a reducing agent or a disproportionation reaction. The reaction produces Ag (silver) and Cl2 (chlorine gas). The silver produced accounts for approximately 78.4% of the original AgCl mass. Therefore, 39.2 grams of silver can be produced from 50 grams of AgCl.

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The calculated amount of the hydrogen that is produced would be too low.

We should know that the question that we have here is going to so much border on the stoichiometry of the reaction. In this case, we are having the fact that A student accidentally added 15 mL of HCl to the eudiometer instead of 10 mL.

We know that the amount of the hydrogen that is produced would depend on the amount of the acid that is added and if an excess amount is added, the calculated amount would be too low because of this error.

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When the e - liquid or the tobacco is heated in a vaping device , it will produces the aerosol. The user inhale the aerosol in their lungs.

The e - liquid or the tobacco when heated too much it will produces the aerosol. The e - cigarettes results in the production of the aerosol , when it heated too much. The liquid it contain is nicotine. The drugs cigarettes , the cigar and tobacco , flavoring helps to produces the aerosol.

Thus, when the e - liquid is heated too much it will results in the production of the aerosol.

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Molar mass: According to the answer you need 3.0 g of Al to make 15 g of AlCl3.

Molar mass is the mass of a given substance (chemical element or compound) divided by the amount of substance in moles. It is usually expressed in grams per mole (g/mol). Molar mass is an important concept in chemistry, as it is used to calculate the mass of a substance from the amount of moles of the substance. It is also used to calculate the amount of moles of a substance from the mass of the substance. Molar mass is also used to calculate the density of a substance, as well as the molar volume of a substance.

Molar mass of Al = 27 g/mol
Molar mass of AlCl3 = 133 g/mol
To make 15 g of AlCl3, you need 15/133 = 0.112 mol of AlCl3.
To make 0.112 mol of AlCl3, you need 0.112 mol of Al.
Therefore, you need 0.112 mol of Al x 27 g/mol = 3.0 g of Al.
Therefore, you need 3.0 g of Al to make 15 g of AlCl3.

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• Radio waves

• Microwaves

• Infrared radiation

• Visible light

• Ultraviolet light

• X-rays

• Gamma rays

Electromagnetic radiation can be categorized into seven different groups. It consists of radio waves, microwaves, infrared, visible light, ultraviolet light, X-rays, and gamma rays.

The wavelengths of each of them are as follows:

Gamma rays: < 10⁻¹² m. It is usually used in the medical field

X-rays: 1 nm- 1 pm. It is used in a number of fields like medicine and airport security.

Ultraviolet: 400 nm- 1 nm. Sun is the main source of UV rays

Visible light: 750 nm- 400 nm. This is visible to our eyes.

Infrared light: 25 μm – 2.5 μm. It is mainly used in night vision goggles.

Microwaves: 1 mm – 25 μm. It is used in microwave ovens and other cooking utensils.

Radio waves: > 1 mm. It captures the waves transmitted by radio stations

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