What is the hydroxide ion concentration of a solution
with a pOH of 5.0?
Select one:
a 5.0 x 10¹¹ M
b 1.0 x 105 M
c 1.0 x 10⁹ M
d 1.0 x 109 M

The IUPAC name of the compound is 3-Ethyl-2,2-dimethylhexane.

IUPAC naming is a systematic method of naming chemical compounds according to a set of rules established by the International Union of Pure and Applied Chemistry. It ensures that each compound has a unique and unambiguous name based on its molecular structure.

From the image:

Thus, the IUPAC name of the compound is 3-Ethyl-2,2-dimethylhexane.

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Answer:2.115 L

Explanation:

4.5 x .47 = 2.115 L

4.5 pints are approximately equal to 2.129292 liters. The answer closes to the result is 2.215 liters.

This question is concerned with conversion between pints and liters. 1 pint is equal to approximately 0.473176 liters. Therefore, to find out how many liters that 4.5 pints is equal to, we multiply 4.5 by 0.473176.

The calculation is as follows: 4.5 pints * 0.473176 liters/pint = 2.129292 liters

Considering the options that was given, the closest answer is 2.215 liters.

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Answer:

3.8%

Explanation:

Ca × 1 = 50

C ×4 = 48

H × 6 = 6

O × 4 = 64

158

6÷158×100% = 3.8%

Answer:

Explanation:

% comp is g element / g cpd x 100%  get the grams from the periodic table

1) 77.78%Fe & 22.22 % O

2) 40.68 % Mg & 59.32 % Cl

3) 75 % C & 25% H

4) 15.79% C & 84.21 % S

5) 30.43 % N & 69.57 % 0

6) 92.63%Hg & 7.37 % )

7) 18.98 % Sn &  81.02 %I

8) 88.89 % Cu & 11.11 % O

9) 82.35 & N & 17.65 % H

10) 40% C & 6.67% H & 53.33 % O

Regardless of the reactant B concentration, the reactant rate remains constant. As a result, the response rate is unaffected by increasing B's concentration by a factor of four.

The amount of a substance's solute in a specific amount of solution is how concentrated it is. Molarity, or the amount of molecules of solute in one liter of solution, is a common unit of measurement for concentrations.

Focusing for an extended amount of time on one thing without interruption is meditation. Concentrating the mind on a specific object is the basic exercise of concentration that all meditations begin with. After some practice, concentration can eventually turn into meditation when the mind is calm and not easily diverted by other thoughts.

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O:C:H ratio is 34.8/16/52.2/12/13/0/1 = 2.17/4.35/13/0 = 1:2/6. Hence, C2H6O is the empirical formula (option D).

Fuel cells may produce heat and energy from hydrogen. Although transportation and utilities are expanding businesses, fertilizer manufacturing and petroleum refining still use hydrogen most frequently today.

According to the 1992 Energy Policy Act, hydrogen qualifies as an alternative fuel. The ability of hydrogen to power fuel cell technology in zero-emission vehicles, the potential for home consumption, and the high efficiency and quick filling time of fuel cells all contribute to the interest in hydrogen as such an alternative transportation fuel.

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Answer: C - The amount of gas

Explanation:

One litre (L) of water (H2O) weighs 1,000 g and has a molar mass of 18 grammes (g). The term "mole" is frequently used to refer to a molecular weight. Hence, 55.6 moles more water are present in 1 litre of water.

How do you translate mass into moles using a formula. By dividing the number the molecules by Avogadro's number, one can determine the number of moles inside a given number of substance molecules. When dividing the mass even by formula mass given in g/mol, one can determine the number de moles in a given quantity of substance.

Using the periodic tables, we can calculate the atomic mass of a elements. We find that hydrogen has an atomic weight of 1, whereas that for oxygen is 16. To calculate the molecular weight of a single water molecule, we add the contributions from each atom, which equals 2(1) + 1(16) Or 18 gram/mole.

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Answer:

The nuclide formed by the β decay of 26Al is 26Mg.


Mark my answer as brainliest! this was a difficult one

Absolute magnitude, on the other hand, is a measure of how bright a star would appear if it were located at a standard distance of 10 parsecs (32.6 light-years) away from Earth.

What is Magnitude?

Magnitude is a measure of the brightness of a celestial object, such as a star, planet, or galaxy. It is based on the amount of light that is emitted by the object and is typically expressed using a numerical scale. The lower the magnitude value, the brighter the object appears.

Apparent magnitude is a measure of how bright an object appears to an observer on Earth, while absolute magnitude is a measure of how bright an object would appear if it were located at a standard distance of 10 parsecs (32.6 light-years) away from Earth.

Apparent magnitude is a measure of how bright a star appears to an observer on Earth. It is determined by the amount of light that reaches Earth from the star, as well as the distance between the star and Earth. As humans travel away from our solar system and to other solar systems, the distance between them and the stars will change, which will affect how bright the stars appear to the travelers. As they move closer to a star, its apparent magnitude will increase, and as they move away, its apparent magnitude will decrease.

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Answer:

The density of an object is constant.

Density is a derived unit of measure.

The density of an object determines whether it will sink or float.

Explanation:

The balanced chemical equation for the reaction between sulfuric acid and potassium hydroxide is:

H₂SO4(aq) + 2KOH(aq) → K₂SO4(aq) + 2H₂O(l)

From the equation, we can see that 1 mole of H₂SO4 reacts with 2 moles of KOH. We can use this information to determine the number of moles of H₂SO4 and KOH present in the mixture before neutralization:

moles of H₂SO4 = 0.850 L x 0.400 mol/L = 0.34 mol

moles of KOH = 0.800 L x 0.250 mol/L = 0.20 mol

Since KOH is the limiting reagent, it will be completely consumed in the reaction. The number of moles of H₂SO4 that reacts with the KOH is given by:

moles of H₂SO4 reacted = 2 x moles of KOH = 0.40 mol

The remaining moles of H₂SO4 after neutralization is:

moles of H₂SO4 remaining = moles of H₂SO4 - moles of H₂SO4 reacted

moles of H₂SO4 remaining = 0.34 mol - 0.40 mol

moles of H₂SO4 remaining = -0.06 mol

Since the moles of H₂SO4 remaining is negative, it means that all of the H₂SO4 has reacted with the KOH and there is an excess of KOH. Therefore, the concentration of sulfuric acid remaining after neutralization is 0 M.

The statement that "The volume of a gas sample mostly consists of empty space between the moving gas particles" is one of the assumptions of the Kinetic Molecular Theory regarding gases.

What is Collision?

There are different types of collisions, depending on the nature of the objects involved, the speed and direction of their motion, and the type of contact that occurs. For example, elastic collisions are those in which the total kinetic energy of the colliding objects is conserved, meaning that no energy is lost or gained during the collision. In contrast, inelastic collisions are those in which some of the kinetic energy is transformed into other forms of energy, such as heat or sound.

The Kinetic Molecular Theory is a model that describes the behavior of gases. One of the main assumptions of this theory is that gas particles are in constant random motion and move in a straight line until they collide with other particles or the walls of their container.

Another important assumption of this theory is that the volume of a gas sample mostly consists of empty space between the moving gas particles. This means that gas particles are assumed to be very small compared to the overall volume of the gas sample. Therefore, the particles do not occupy all of the available space in the container, but instead only occupy a small portion of it.

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We must first determine how much heat is produced by the combustion of aniline. According to the chemical equation, 4 moles of aniline react with 35 moles of oxygen to create 4 moles of nitrogen dioxide, 24 moles of carbon dioxide, and 14 moles of water. The mole ratio of aniline to heat emitted is as a result.

When one mole of water is created from hydrogen and oxygen in the opposite reaction (equation d), it exhales 285.8 kJ of energy.

How much heat energy is released when 1.8 g of glucose is burned?

C₆H₁₂O₆(s)+6O₂(g)→6CO₂(g)+6H₂O(l); ΔH = −2900kJ

One mole (about 180g) of glucose burned during combustion, releasing 2900kJ (29001801.8=29kJ) in heat.

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The volume of the nitrogen oxide gas is 35.2 L

Stoichiometry is the quantitative study of reactants and products in a chemical reaction. It is used to determine the amount of reactants needed to produce a certain amount of product, or to determine the amount of product that will be produced from a given amount of reactant.

To apply stoichiometry;

We know that;

Number of moles of Cu = 150/ 63.5g/mol = 2.36 moles

If 3 moles of Cu produced 2 moles of NO

2.36 moles of Cu will produce 2.36 * 2/3

= 1.57 moles

If 1 moles of NO occupies 22.4 L

1.57 moles of NO will occupy 1.57 * 22.4/1

= 35.2 L

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Answer:

In this case, the acid is 0.200 M HNO3 and the base is 0.200 M nitric acid. To calculate the pH of a 50.0-mL solution, add 58.3 mL of 0.200 M HNO3. The final pH of the solution will be 8.33. To calculate the pH of a 35.0 mL solution, add 36.7 mL of 0.198 M HNO

When a protonated epoxide is attacked by water, the nucleophile attacks from the "top" or "front" of the epoxide ring in an "S_N2" substitution nucleophilic bimolecular process.

A protonated epoxide is a molecule that contains an epoxide ring (a three-membered ring consisting of two carbon atoms and one oxygen atom) that has been protonated, or had a hydrogen ion (H+) added to it.

The protonation of an epoxide ring can occur in the presence of an acidic medium, such as a strong acid like sulfuric acid (H2SO4) or hydrochloric acid (HCl).

In acidic conditions, the lone pair of electrons on the oxygen atom of the epoxide ring can interact with the positively charged hydrogen ion, resulting in the formation of a protonated epoxide.

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Answer:

What paper

Explanation:

What do you mean by paper is too much fir you that paper do youneed help with that paper sir i gotchu withthat paper

Answer:

B) Mass- I searched it up

Answer:

2300J

Explanation:

The first law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system:

ΔU = Q - W

Where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system.

In this case, ΔU is what we want to find, Q is 700 J, and W is -400 J (note that the work done by the system is negative because it is done on the surroundings). Substituting these values into the equation:

ΔU = Q - W

ΔU = 700 J - (-400 J)

ΔU = 700 J + 400 J

ΔU = 1100 J

The final internal energy of the system is therefore 1100 J + the initial energy of 1200 J, which equals 2300 J.

The volume of the gas will be 560 mL when the pressure is reduced to 125.0 kPa, assuming the temperature remains constant.

Boyle's law simply states that "the volume of any given quantity of gas is inversely proportional to its pressure as long as temperature remains constant.

Boyle's law is expressed as;

P₁V₁ = P₂V₂

Where P₁ is Initial Pressure, V₁ is Initial volume, P₂ is Final Pressure and V₂ is Final volume.

Substituting the given values, we get:

P₁ = 350.0 kPa (initial pressure)

V₁ = 200 mL (initial volume)

P₂ = 125.0 kPa (final pressure)

V₂ = ?

Solving for V₂, we get:

V₂ = ( P₁ × V₁ ) / P₂

V₂ = (350.0 kPa × 200 mL) / 125.0 kPa

V₂ = 560 mL

Therefore, the final volume of the gas is  560 mL.

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It is a synthetic statin, an dihydroxy monocarboxylic acids, a pyrimidine, a sulfonamide, and a monofluorobenzene. It shares a functional connection with hept-6-enoic acid.

20 mg of rosuvastatin are contained in each film-coated tablet (as rosuvastatin calcium). Each 20 mg tablet also includes 0.025 milligrammes Sunset yellow FCF, 0.029 mg Allura red AC, and 91.755 mg lactose monohydrate.

Yet, because cholesterol has a steroid nucleus, it will behave differently. Aldehyde, ketone, ether, and amide groups don't exist in cholesterol. It only possesses one hydroxyl group, which, like carbohydrates, contains the functional group alcohol.

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Answer:

To find the value of y, we need to use the concept of molar ratios and the mole concept.

First, we need to calculate the number of moles of aluminum and oxygen in the given sample of ore. We can do this by dividing the mass of each element by its respective atomic mass:

Number of moles of aluminum = 5.4 kg / 27 g/mol = 200 moles

Number of moles of oxygen = 4.8 kg / 16 g/mol = 300 moles

Next, we can determine the ratio of the number of moles of aluminum to oxygen in the sample. This ratio is:

Aluminum : Oxygen = 200 : 300

Simplifying this ratio by dividing both sides by 100, we get:

Aluminum : Oxygen = 2 : 3

According to the chemical formula of aluminum oxide (Al2O3), it contains 2 atoms of aluminum for every 3 atoms of oxygen. Therefore, the sample of ore must contain a whole number of units of this chemical formula. Let the number of units of Al2O3 be y.

Then, we can set up the following equation to solve for y:

2 moles of aluminum * y = 200 moles of aluminum

3 moles of oxygen * y = 300 moles of oxygen

Simplifying each equation, we get:

y = 100

y = 100

Since both equations give the same value for y, we can conclude that the sample of ore contains 100 units of Al2O3. Therefore, the value of y is 100.

Answer:

At a temperature of 300K, a gas has a volume of 3.0 L. If we double the temperature to 600K, the volume will increase to 6.0 L. However, the pressure will remain the same at 1 atm. Therefore, the new volume is 6.0 L x 1 atm = 6.0 L

Answer:

Here are the chemical reactions for the formation of the respective Grignard reagents from the reaction of magnesium with the following organic halides:

Mg + CH3I → CH3MgI

Mg + C6H5Br → C6H5MgBr

Mg + C3H7Cl → C3H7MgCl

Grignard reagents are formed when magnesium metal is reacted with an alkyl halide. The magnesium metal reacts with the halide to form a magnesium halide salt, and the alkyl group is displaced from the halide to form the Grignard reagent.

The Grignard reagent is a powerful nucleophile and can be used to synthesize a variety of organic compounds.

Answer:

Explanation:

100/56 = 1.79 moles MgS

56 came from the periodic table for Mg and S