How many mL of 0.500 M Nal would be required to make a 0.0410 M
solution of Nal when diluted to 275.0 mL with water?

Answer:

True

Explanation:

I think it is common sense to assume that if we all came together to reduce our consumption then less resources would be harvested from envrionment and thus we would have positive impact on environment.

Basically, this figure represents scattering of alpha particles by the atoms of a gold foil.

Hope you could understand.

If you have any query, feel free to ask.

Answer:

option A is correct  ( sodium, calcium and barium)

Explanation:

Given compounds:

Sodium chloride , calcium sulfide, barium oxide

We know that metals form positive ions. In order to solve the problem we must identify the metals from given compounds.

Na⁺Cl⁻

Ca²⁺S²⁻

Ba²⁺O²⁻

We can see that sodium, calcium and barium contain positive charges.

Thus option A is correct.

Because sodium have one valance electron. When it combine with chlorine sodium lose its one electron to complete the octet and chlorine accept it to complete its octet. Thus sodium form positive ion and chlorine form negative ion.

Similarly barium and calcium are present in group 2. Both have two valance electron. When they lose them cation are formed.

Other option are incorrect because,

Option B have sulfur and oxygen which are anion.

Option C have chlorine which is also anion

Option D have chlorine, sulfur and oxygen that are anions.

Answer:

option A is correct ( sodium, calcium and barium)

Explanation:

Answer:

C) Tells you the identity of the atom

Explanation:

Two types of atoms can never have the same atomic number. The atomic number is a unique feature of an element.

Orbitals

Explanation:

Electrons are found in different levels  or orbitals  surrounding the nucleus. The electrons can be found at any point in their orbital.

Hope this helped!!!

Answer:

shells or orbitalsthat

Explanation:

Answer:

Explanation:

Pellet form of NaOH is highly hygroscopic . It absorbs moisture from air and its weight is increased by the time one tries to weigh one gram of it . Moreover it also reacts with carbon dioxide gas of atmosphere to form sodium carbonate .

2 NaOH + CO₂ = Na₂CO₃ + H₂0.

It also increases its weight .

Answer:

the answer would be 9,448.8

The mass of 9.3 × 10¹⁶ lead atoms is equal to 0.032 mg.

Avogadro’s number represents the number of entities in one mole of any substance. Generally, these units can be molecules, atoms, ions, electrons, or protons, depending upon the type of chemical reaction or reactant and product.

The value of Avogadro’s constant is approximately equal to 6.022 × 10²³ mol⁻¹.

Given, the number of atoms of the lead =  9.3 × 10¹⁶

The atomic mass of the lead = 207.2 g/mol

So 6.022 × 10²³ atoms of lead have mass = 207.2g

Then 9.3 × 10¹⁶ lead atoms will have mass \(=\frac{207.2\times 9.3\times 10^{23}}{ 6.022\times 10^{23}}\)  = 31.998 ×10⁻⁷g

As we know, 1 gram = 1000 mg

The mass of the  9.3 × 10¹⁶ lead atoms =  31.998 ×10⁻⁴ mg = 0.0032 mg

Therefore, the mass of 9.3 × 10¹⁶ lead atoms is  0.032 mg.

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Answer:

The multiplier is 3

Explanation:

For this problem, we need to find an integer for the number of moles of oxygen. Let's see the results by multiplying 2.33 and 2, 3, 4:

2.33 mol · 2 = 4.66 moles.

2.33 mol · 3 = 6.99 moles ≈ 7 moles.

2.33 mol · 4 = 9.32 moles.

You can note that if we multiply 2.33 moles by three (3), we obtain an integer of the number of moles.

Answer:

Sodium Bromide

Sodium Charge: +1

Bromine Charge: -1

Formula: NaBr

Lithium Oxide

Lithium Charge: +1

Oxygen Charge: -2

Formula: Li₂O

Magnesium Sulfide

Magnesium Charge: +2

Sulfur Charge: -2

Formula: MgS

Boron Chloride

Boron Charge: +3

Chlorine Charge: -1

Formula: BCl₃

Aluminum Sulfide

Aluminum Charge: +3

Sulfur Charge: -2

Formula: Al₂S₃

Hope that helps. :)

Answer:

0.09865M of NaOH

Explanation:

As a diprotic acid, 1 mole of oxalic acid reacts with 2 moles of NaOH as follows:

H2C2O4 + 2 NaOH → 2 H2O + Na2C2O4

With the mass of the acid and its molar mass we can obtain the moles of oxalic acid. Twice these moles are the moles of NaOH in the solution. As you required 23.64mL = 0.02364L of the NaOH, you can knkow molarity, thus:

Moles Oxalic acid:

0.147g * (1mol / 126.07g) = 1.166x10⁻³ moles Oxalic acid.

Moles NaOH:

1.166x10⁻³ moles Oxalic acid * (2 moles NaOH / 1 mole H2C2O4) = 2.332x10⁻³ moles NaOH

Molarity:

2.332x10⁻³ moles NaOH / 0.02364L =

The mass of hydrogen needed to produce 51.0 grams of ammonia is  ≈ 9.07 grams.

To determine the mass of hydrogen required to produce 51.0 grams of ammonia (NH3) using the Haber process, we need to calculate the stoichiometric ratio between hydrogen and ammonia.

From the balanced chemical equation:

3 H₂(g) + N₂(g) → 2 NH₃(g)

We can see that for every 3 moles of hydrogen (H₂), we obtain 2 moles of ammonia (NH₃).

First, we need to convert the given mass of ammonia (51.0 grams) to moles. The molar mass of NH₃ is 17.03 g/mol.

Number of moles of NH₃ = Mass / Molar mass

                     = 51.0 g / 17.03 g/mol

                     ≈ 2.995 moles

Next, using the stoichiometric ratio, we can calculate the moles of hydrogen required.

Moles of H₂ = (Moles of NH₃ × Coefficient of H₂) / Coefficient of NH₃

           = (2.995 moles × 3) / 2

           ≈ 4.493 moles

Finally, we can convert the moles of hydrogen to mass using the molar mass of hydrogen (2.02 g/mol).

Mass of H₂ = Moles × Molar mass

          = 4.493 moles × 2.02 g/mol

          ≈ 9.07 grams

Therefore, approximately 9.07 grams of hydrogen is needed to produce 51.0 grams of ammonia in the Haber process.

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Sodium carbonate, often referred to as Na2CO3, is a chemical compound composed of atoms of sodium (Na), carbon (C) and oxygen (O).

It is also sometimes called washing soda or soda ash. At room temperature, sodium carbonate is a white, crystalline solid that is very soluble in water. According to the chemical formula of the sodium carbonate molecule, Na2CO3, each molecule consists of two sodium atoms (Na), one carbon atom (C) and three oxygen atoms (O). The atomic configuration in sodium carbonate is shown in the given diagram.

A trigonal planar arrangement is formed when the central carbon atom is bonded to three oxygen atoms. The structure of sodium carbonate is completed by two sodium atoms joined to oxygen atoms.

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Answer:

4 moles of O2 are consumed if 8moles of H2

The theoretical yield of Acetylsalicylic acid is found out to be: 3.01 grams.

The limiting reagent is a substance that prevents a chemical reaction from occurring completely.

When a limiting reagent is used in a chemical reaction, the atoms, molecules, or ions of the other reactant that it (the limiting reagent) reacts with will either stay free or unreacted.

Popular compounds called acids and bases interact with one another to create salt and water. The Latin word "acere," which meaning "sour," is where the term "acid" originates.

According to the problem, we have 2.31 grams of salicylic acid. We need to determine the theoretical yield of acetylsalicylic acid.

The molar mass of salicylic acid is 138.12 g/mol. Therefore, the number of moles of salicylic acid we have is:

n = mass / molar mass

n = 2.31 g / 138.12 g/mol

n = 0.0167 mol

According to the balanced equation, 1 mole of salicylic acid reacts with 1 mole of acetic anhydride to produce 1 mole of acetylsalicylic acid. Therefore, the number of moles of acetylsalicylic acid produced is also 0.0167 mol.

The molar mass of acetylsalicylic acid is 180.16 g/mol. Therefore, the theoretical yield of acetylsalicylic acid is:

mass = n x molar mass

mass = 0.0167 mol x 180.16 g/mol

mass = 3.01 g

Therefore, the theoretical yield of acetylsalicylic acid is 3.01 grams.

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According to the research, the correct answer is C. Electrical energy is converted to sound energy is the energy transformation that happens in Betsy's alarm clock to wake her up in the morning.

It is the study of how energy changes from one type as Electrical energy to another for example sound energy where a given system converts energy from one form to another.

In this sense, the power source of a clock can be an electric current while doing work, the energy transformation can lead to the formation of sound energy due to some mechanical activities inside the clock.

Therefore, we can conclude that the electrical energy that makes the clock work, whose vibrations cause the energy to be transformed into sound energy in the membrane, displace the coil within the magnetic field.

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If the two substituents are on the same side of the double bond, the bond has a cis conformation. From the diagram below, B, D, and E only have the cis configuration.

If the two substituents are on the opposite sides of the double bond, the double bond has a trans configuration. In the context of chemistry, trans denotes that the functional groups (substituents) are on the same side of some plane, whereas cis implies that they are on the other (transverse) side. The same plane contains all six atoms. The cis isomer has two "X" and "Y" groups on the same side of the double bond. In the trans isomer, the "X" and "Y" groups are situated on opposite sides of the double bond. They do not interconvert because there is no rotation around the bond.

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complete question: which of the following compounds are drawn in the cis configuration? 1.D only 2. B only 3. B, D, and E only 4. A and B only

Answer:

thete are 672 seeds in 14 kg

When a substance changes into an entirely new substance with different properties, it is called a chemical change.

A chemical change is a process where a substance undergoes a transformation that results in the formation of a new substance with different chemical and physical properties. During a chemical change, chemical bonds between atoms are broken and new ones are formed, leading to the creation of a different substance.

Chemical changes are typically irreversible and involve a release or absorption of energy in the form of heat, light, or sound. Examples of chemical changes include combustion, oxidation, and digestion. In contrast, physical changes involve a change in the physical state or form of a substance without altering its chemical composition.

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Equations are balanced using the idea of chemical reactions. to ensure that the reactant side and product side are in equilibrium the steps are below

Balancing chemical equations means making sure that the same number of atoms of each element are present on both sides of the equation. Here are the steps to balance a chemical equation:

It's important to keep in mind that the coefficients should be kept in their lowest whole number ratios, and you can use fractional coefficients if necessary. If the equation is already balanced, no further action needs to be taken.

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The diagram of the different states and each phase change that can be observed at home is attached.

Melting

Ice melting in your hand. As you hold an ice cube in your hand, the heat from your hand will cause the ice to melt. The ice will start to become liquid water, and eventually it will all melt into a puddle of water.

Butter melting in a pan. When you heat butter in a pan, the heat will cause the butter to melt. The butter will start to become liquid oil, and eventually it will all melt into a pool of oil.

Evaporation

Water evaporating from a puddle. As the sun heats a puddle of water, the water molecules will start to move faster and faster. Eventually, some of the water molecules will have enough energy to escape from the surface of the puddle and turn into water vapor. The water vapor will rise into the air, where it will eventually condense and form clouds.

Perfume evaporating from a bottle. When you open a bottle of perfume, the perfume molecules will start to evaporate. The perfume molecules will spread through the air, and you will be able to smell the perfume.

Condensation

Condensation on a cold glass. When you take a cold glass out of the refrigerator, you will see water droplets forming on the outside of the glass. This is because the cold glass is causing the water vapor in the air to condense. The water vapor molecules will lose energy as they come into contact with the cold glass, and they will eventually turn into liquid water.

Clouds forming. When water vapor rises into the air, it cools down. As the water vapor cools down, it will eventually condense and form clouds.

Freezing

Water freezing in your freezer. When you put water in the freezer, the water will eventually freeze. The water molecules will slow down as they get colder, and eventually they will form a solid.

Ice cream freezing in your freezer. When you put ice cream in the freezer, the ice cream will eventually freeze. The ice cream molecules will slow down as they get colder, and eventually they will form a solid.

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Answer:

1. 10 g / 100 g H₂O

2. 2 g / 100 g H₂O

Explanation:

Both questions ask about the solubility of cerium sulfate (Ce₂(SO₄)₃), meaning we need to focus on the dark blue line.

In the liquid state, the pentane molecules move past one another but are held close together.

The liquid phase is a phase of matter that is made of molecules that in motion but do not posses as much kinetic energy as the molecules of gases. Thus implies that the molecules are able to translate.

Hence, the pentane molecules move past one another but are held close together.

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There are approximately 6.022 × 10^23 atoms in 12 grams of Carbon-12 (12C).

The number of atoms in a given amount of a substance can be calculated using Avogadro's number, which represents the number of atoms or molecules in one mole of a substance. Avogadro's number is approximately 6.022 × 10^23.

Carbon-12 is a specific isotope of carbon, with an atomic mass of 12 atomic mass units (amu). One mole of Carbon-12 has a mass of 12 grams. Since one mole of any substance contains Avogadro's number of particles, in the case of Carbon-12, it contains 6.022 × 10^23 atoms.

Therefore, if we have 12 grams of Carbon-12, which is equal to one mole, we can conclude that there are approximately 6.022 × 10^23 atoms in this amount of Carbon-12.

In summary, 12 grams of Carbon-12 contains approximately 6.022 × 10^23 atoms. Avogadro's number allows us to relate the mass of a substance to the number of atoms or molecules it contains, providing a fundamental concept in chemistry and enabling us to quantify and understand the microscopic world of atoms and molecules.

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Answer:

the correct answer is baron

Metalloid which is having 3 electrons in the valance shell is boron. option A is correct.

Metalloids are those which show the property of both the metals and nonmetals in other words we can say that they will always show intermediate properties of both the metal and nonmetal

They are also known as semiconductors and their conduction can be increased by doping in which we add some impurities to increase their conductivity. By adding some metals to increase the conductivity or by adding some nonmetals to decrease the conductivity.

Boron is mostly in a crystalline solid state and some other major components of it’s are boric powder etc. They  are situated in the 13th group of the periodic table and have 3 electrons in their outermost shell and are highly reactive and unstable due to partially filled s orbital

Therefore, they have 3 electrons in their outermost shell. Option A is correct.

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In order to calculate the pH and concentration of hydrogen ions we will usually have two formulas:

pH = -log [H+], this one for pH, but in our question we want to find out what is the concentration of H+, so let's modify the pH equation:

[H+] = 10^-pH

[H+] = 10^-13

[H+] = 1*10^-13, this is the concentration of hydrogen ions for Bleach

Chemical properties are flammability, ability to rust, reactivity

A chemical property is the characteristics of a particular substances that can be observed in a chemical reaction and some major chemical properties include flammability, toxicity, heat of combustion, pH value and rate of radioactive decay and chemical stability and can be measured only when matter undergoes to become entirely different kind of matter and in iron that is capable of combining with oxygen to form iron oxide

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The molecules that assists deoxyribonucleic acid (DNA) in its organization is the proteins. That is option A.

Deoxyribonucleic acid (DNA) is defined as the hereditary molecules in a living organism that stores instructions for making other large molecules which are inherited from the parent.

In the structure of the deoxyribonucleic acid, they are made made up of base pairs that are organised by proteins known as histones.

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The statement "Superficial zone chondrocytes can get compacted under physiological loading: a multiscale finite element analysis" is true.

Superficial zone chondrocytes are the most exposed to mechanical loading and are therefore at risk of being compacted under physiological loading. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

This means that chondrocytes in the superficial zone of cartilage are at risk of being compacted under the physiological loading that it experiences in everyday life. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

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your answer is C you're welcome