what is the iupac name for the following compound? m10q2 5-ethyl-6-methyl-7-octen-4-ol 3-ethyl-4-methyl-2-octen-5-ol 4-ethyl-6-methyl-1-octen-5-ol 4-ethyl-3-methyl-1-octen-5-ol

Answer:

2.6 mol HCl

Explanation:

Step 1: Write the balanced equation

2 KMnO₄ + 8 HCl ⇒ 3 Cl₂ + 2 MnO₂ + 4 H₂O + 2 KCl

Step 2: Calculate the number of moles of hydrochloric acid needed to react with 0.64 moles of potassium permanganate.

According to the balanced equation, the molar ratio of KMnO₄ to HCl is 2:8.

0.64 mol KMnO₄ × 8 mol HCl/2 mol KMnO₄ = 2.6 mol HCl

24.7 g of NH4Cl will remain as excess reactant after the maximum amount of NH3 has been formed.

What is Reactant?

In a chemical reaction, a reactant is a substance that undergoes a chemical change or reaction with other substances to form a product. Reactants are typically written on the left side of a chemical equation and are used to represent the starting materials in a chemical reaction. The reactants are consumed during the reaction, and the resulting products are formed.

To determine the maximum possible yield of NH3, we first need to calculate the limiting reactant of the reaction, which is the reactant that is completely consumed and determines the maximum amount of product that can be formed.

The balanced chemical equation for the reaction is:

CaO(S) + 2 NH4Cl(s) → 2 NH3(g) + H2O(g) + CaCl2(s)

The molar mass of CaO is 56.08 g/mol, and the molar mass of NH4Cl is 53.49 g/mol.

To find the limiting reactant, we can use the mole ratio of CaO and NH4Cl in the balanced equation.

Number of moles of CaO = 139 g / 56.08 g/mol = 2.476 mol

Number of moles of NH4Cl = 245 g / 53.49 g/mol = 4.588 mol

The mole ratio of CaO to NH4Cl is 1:2, which means that 1 mole of CaO reacts with 2 moles of NH4Cl.

Therefore, the amount of NH4Cl required to react with all the CaO is:

2.476 mol CaO × (2 mol NH4Cl / 1 mol CaO) = 4.952 mol NH4Cl

Since we have only 4.588 mol of NH4Cl available, it is the limiting reactant. This means that all the NH4Cl will be consumed in the reaction and the amount of NH3 produced will be limited by the amount of NH4Cl.

The maximum possible yield of NH3 can be calculated using the mole ratio of NH4Cl and NH3 in the balanced equation:

4.588 mol NH4Cl × (2 mol NH3 / 2 mol NH4Cl) × (17.03 g NH3 / 1 mol NH3) = 155 g NH3

Therefore, the maximum possible yield of NH3 is 155 g.

To determine the mass of the excess reactant remaining, we can use the amount of NH4Cl consumed in the reaction and subtract it from the initial amount of NH4Cl:

245 g NH4Cl - (4.588 mol NH4Cl × 53.49 g/mol) = 24.7 g NH4Cl

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The d-orbital starts in the third energy level (n = 3) of an atom.

Each energy level can contain one or more sublevels, including s, p, d, and f sublevels. The first energy level (n = 1) has one s orbital and can hold a maximum of 2 electrons. The second energy level (n = 2) has one s orbital and three p orbitals, allowing for a maximum of 8 electrons. The third energy level (n = 3) has one s orbital, three p orbitals, and five d orbitals, accommodating a maximum of 18 electrons.

The d-orbitals are found in the third energy level, corresponding to the third period of the periodic table. Therefore, the period number for the energy level where the d-orbital starts is 3.

The filling order of orbitals follows the pattern: 1s, 2s, 2p, 3s, 3p, 4s, 3d, and so on. The d-orbitals start filling after the p-orbitals in the third energy level. The electron configuration for the third energy level is written as 3s^2 3p^6 3d^1-10, depending on the element.

For example, the electron configuration of iron (Fe) is 1s^2 2s^2 2p^6 3s^2 3p^6 3d^6 4s^2. This configuration indicates that the d-orbitals of iron are half-filled with 5 electrons.

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Answer:

8,95

Explanation:

Density is equal to mass/volume

\(D=\frac{m}{v} \\D= \frac{1668g}{186.2} \\D = \frac{8,95g}{cm^3} \\\)

approximately

Curiosity:

Did you knew that is because of his low density that ships can fluctuate?

Despite their big mass, their volume are far greatter, so the Buoyancy Force acts heavily on them.

Poles, Similar to a magnet's north and south poles, the two electrically charged regions on either end of the molecule are referred to as poles. A dipole is a molecule that has two poles.

A polar molecule is one that has an unbalanced charge on one side, according to the meaning of the term in chemistry. It has a partial charge area. One end is marginally favorable, the other marginally negative. They often have an unbalanced distribution of electrons and are asymmetrical.

Similar to a magnet's north and south poles, the two electrically charged regions on either end of the molecule are referred to as poles. Due to its two poles, a polar molecule is known as a dipole. A polar bond itself can also be referred to as a dipole.

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Answer:

C. 7.50g

Explanation:

The percent (%) by mass of a solute in a solution refers to the number of grams contained in 100g of solution by that solute. In this case, 5% by mass of pottasium chloride (KCl) means 5g of KCl is contained in 100g of solution.

Therefore, in 150g of solution, there would be:

5g/100g × 150g

= 0.05 × 150

= 7.50g of KCl solute.

Hence, 7.50g of pottasium chloride would be expected to be collected by evaporating 150.0 g of the solution.

There are 6 attomoles of epinephrine in each vesicle.

The number of molecules per vesicle is 3.613 * 10¹⁵ molecules

The volume of the vesicle is 3.35 * 10⁻¹⁸ m³ or 3.35 * 10⁻¹⁵ L

The molar concentration of epinephrine in the vesicle is 2.99 M.

The number of attomoles of epinephrine in each vesicle is determined as follows:

Number of attomoles per vesicle = (150 fmol / 2.5 x 10⁴) / 10⁹

Number of attomoles per vesicle = 6 amol

(b) To find the number of molecules of epinephrine in each vesicle is determined as follows:

Molecular weight of epinephrine = 183.2 g/mol

Based on Avogadro's number:

1 mole of epinephrine = 6.022 * 10²³ molecules

1 amol of epinephrine = 6.022 * 10¹⁴ molecules

Number of molecules per vesicle = 6 * 6.022 * 10¹⁴

Number of molecules per vesicle = 3.613 * 10¹⁵ molecules

(c) The volume of a vesicle with radius r is:

r = 200 nm or 2 * 10⁻⁷ m, we get:

V = (4/3) * π * (2 * 10⁻⁷)³

V = 3.35 * 10⁻¹⁸ m³

Converting to liters:

1 L = 10⁻³ m³

The volume of the vesicle in liters will be:

V = 3.35 * 10⁻¹⁸ m³ * (1 / 10⁻³)

V = 3.35 * 10⁻¹⁵ L

(d) The molar concentration of epinephrine in the vesicle is determined using the formula below:

Molar concentration = 10 amol / 3.35 * 10⁻¹⁸ m³

Converting amol to mol:

Molar concentration = 10 * 10⁻¹⁸ mol / 3.35 * 10⁻¹⁸ m³

Molar concentration = 2.99 M

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Answer: 6.45 Joules

Explanation: I just did it

Answer:

true

Explanation:

Answer:

false

Explanation:

i took the test and got it right

Answer:

A. its reactivity

Explanation:

It's reactivity because copper was exposed to air and if it is reactivity it must be exposed to air

Answer:

A.  reactivity

Explanation:

The methyl carbon from acetyl-CoA and the carbonyl carbon from oxaloacetate become chemically equivalent at the point of the citric acid cycle where the enzyme citrate synthase catalyzes the condensation of acetyl-CoA and oxaloacetate to form citrate.

The citric acid cycle, also known as the Krebs cycle, is a series of chemical reactions that occurs in the mitochondria of cells. One of the key steps in this cycle is the condensation of acetyl-CoA and oxaloacetate to form citrate. This reaction is catalyzed by the enzyme citrate synthase. During this reaction, the carbonyl carbon of oxaloacetate and the methyl carbon of acetyl-CoA are chemically equivalent in the molecule of citrate. This reaction marks the starting point of citric acid cycle and forms the first intermediate of the citric acid cycle.

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Of the following correctly predicts the most likely mode of radioactive decay for the nuclide \(As^{33}_{84}\)

The nuclide \(As^{33}_{84}\) has an atomic number of 33, indicating that it is arsenic. To predict the most likely mode of radioactive decay for \(As^{33}_{84}\), we need to consider its position on the periodic table and the stability of its nucleus

\(As^{33}_{84}\) falls into the category of a stable nuclide since it has a stable atomic number. Stable nuclides do not undergo radioactive decay. Therefore, it is unlikely that \(As^{33}_{84}\) would undergo spontaneous radioactive decay through alpha decay (emitting an alpha particle), beta decay (emitting a beta particle), or gamma decay (emitting gamma radiation). Nuclides that are unstable and undergo radioactive decay typically have atomic numbers higher than the stable region of the periodic table or have an imbalance of protons and neutrons in the nucleus. However, as \(As^{33}_{84}\) is a stable nuclide, it is not expected to undergo any form of radioactive decay. Hence, the most likely mode of radioactive decay for the nuclie \(As^{33}_{84}\) is no decay at all since it is a stable nuclide.

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Answer:

False

Explanation:

Alkali metals are found in group 1 of the periodic table. They only have one valence electron. The easiest way for them to complete an octet is to lose an electron. Halogens, on the other hand, have seven valence electrons and gain an electron to complete octet.

Reaction equilibrium is the situation in which a chemical reaction's forward and reverse reaction rates are equal. The system is said to be in a steady state when the concentrations of the reactants and products remain consistent across time.

In other terms, a chemical reaction is said to be in equilibrium when the concentrations of its reactants and products no longer change over time.

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The angular frequency of a proton in a cyclotron can be calculated using the formula:

In a cyclotron, charged particles like protons are accelerated in a circular path by a magnetic field. The angular frequency represents the rate at which the particle completes one full revolution around the circular path.

To calculate the angular frequency, we use the formula ω = qB/m, where q is the charge of the particle, B is the magnetic field strength, and m is the mass of the particle.

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Answer: dis was wrong https://brainly.com/question/30385399

Explanation: good luck

The subatomic particle is not indicated by the atomic number of a neutral atom is neutron.

The subatomic particles is the particles that atom is composed of. The subatomic particles is given as :

The atomic number of the neutral atom is equals to the number of the protons. The number of protons is equals to the number of electrons for the neutral atom. The mass number is equal to the number of protons + number of neutrons.

Thus, the number of neutrons is the subatomic particle that is not indicated by the atomic number of a neutral atom.

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The one that is NOT true regarding the carbon cycle is option C: Trees grow faster when atmospheric CO2 is higher.

In reality, trees do tend to benefit from increased atmospheric CO2 levels through a process known as carbon fertilization. Higher concentrations of CO2 can enhance photosynthesis and stimulate plant growth to some extent. However, the relationship between increased CO2 and tree growth is not a universal rule. The growth response of trees to elevated CO2 levels can vary depending on various factors, such as nutrient availability, water availability, temperature, and species-specific characteristics.

Regarding the other statements:

A. Atmospheric CO2 in the Southern Hemisphere is higher in January than it is in July: This statement is generally true. Seasonal variations in CO2 levels occur due to the interplay of factors such as vegetation growth, temperature, and atmospheric circulation patterns.

B. The amount of carbon in the atmosphere depends on processes occurring both on land and in the ocean: This statement is true. The carbon cycle involves exchanges of carbon between the atmosphere, land, and ocean through processes such as photosynthesis, respiration, combustion, and oceanic absorption.

E. The flux of CO2 into the ocean is currently greater than the flux of carbon out of the ocean: This statement is also true. Human activities, particularly the burning of fossil fuels, have increased the concentration of CO2 in the atmosphere. As a result, the ocean acts as a sink, absorbing more CO2 than it releases.

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The limestone sample is approximately 87.6% calcium carbonate based on the back titration with HCl and NaOH solutions.

To calculate the percentage of calcium carbonate in the limestone, we'll follow these steps:

1. Determine the moles of HCl used:

  Moles of HCl = Concentration of HCl * Volume of HCl used

  Moles of HCl = 0.200 mol/dm³ * 0.100 dm³ (volume of HCl used)

  Moles of HCl = 0.0200 mol

2. Determine the moles of NaOH used:

  Moles of NaOH = Concentration of NaOH * Volume of NaOH used

  Moles of NaOH = 0.100 mol/dm³ * 24.8 cm³ (volume of NaOH used)

  Moles of NaOH = 0.00248 mol

3. Calculate the moles of NaOH required to react with the excess HCl:

  Moles of NaOH required = Moles of HCl - Moles of NaOH used

  Moles of NaOH required = 0.0200 mol - 0.00248 mol

  Moles of NaOH required = 0.01752 mol

4. Determine the moles of CaCO₃ in the limestone:

  From the balanced equation, we know that 2 moles of NaOH react with 1 mole of CaCO₃.

  Therefore, Moles of CaCO₃ = 0.01752 mol / 2

  Moles of CaCO₃ = 0.00876 mol

5. Calculate the mass of CaCO₃ in the limestone:

  Mass of CaCO₃ = Moles of CaCO₃ * Molar mass of CaCO₃

  Molar mass of CaCO₃ = (40.08 g/mol) + (12.01 g/mol) + (3 * 16.00 g/mol)

  Molar mass of CaCO₃ = 100.09 g/mol

  Mass of CaCO₃ = 0.00876 mol * 100.09 g/mol

  Mass of CaCO₃ = 0.876 g

6. Calculate the percentage of calcium carbonate in the limestone:

  Percentage of CaCO₃ = (Mass of CaCO₃ / Mass of limestone) * 100

  Percentage of CaCO₃ = (0.876 g / 1.00 g) * 100

  Percentage of CaCO₃ = 87.6%

Therefore, the percentage of calcium carbonate in the limestone is approximately 87.6%.

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Complete Question:

Limestone is mainly calcium carbonate. A student wanted to find what percentage of some limestone was calcium carbonate. A 1.00 g sample of limestone is allowed to react with 100cm^3 of 0.200 mol dm^3 HCl. The excess acid required 24.8cm^3 of 0.100mol dm^3 NaOH solution in a back titration. Calculate the percentage of calcium carbon in the limestone

Answer:

OB heat

Explanation:

Hope this helps

Answer:

Explanation:

electrons have a minus charge. There are more of them than protons.

8 - 11 = -3 is the charge of the ion. (at atom that has a charge is an ion).

Answer:

Water and carbon dioxide

Explanation:

The product of combustion for all hydrocarbons are carbon dioxide and water

Answer:

The net ionic question is bel2(aq) + pbso4(aq)

We see these two addends come at both sides of the equation.

It is the answer to this.

Answer:

The answer is B. sound; light

Explanation:

Answer:the second largest one

Explanation:

both weels are pushing at it

After extracting the resulting solution with dichloromethane (DCM), you add all the collected DCM layers to a test tube containing an appropriate solvent or a drying agent.

The solution in the test tube could be a variety of things depending on the experiment, such as a reagent solution, a solvent solution, or a sample solution.

The purpose of adding the DCM layers to the test tube is to further isolate and purify the desired compound from the original mixture. The DCM layers contain the compound of interest, and by adding them to the appropriate solution, you can continue with further experimentation or analysis. It is important to ensure that the solution in the test tube is compatible with the DCM layers and will not interfere with the compound being isolated.

Overall, the addition of the DCM layers to the test tube is a crucial step in the extraction and purification process, and the solution used should be carefully chosen based on the specific experiment being conducted.

After extracting the resulting solution with dichloromethane (DCM), you add all the collected DCM layers to a test tube containing an appropriate solvent or a drying agent.

The purpose of this step is to remove any remaining impurities and water from the DCM layers, ensuring a clean and concentrated solution for further analysis or experimentation.

Depending on the specific extraction process and the compounds being targeted, the solvent or drying agent used may vary.

Examples of common drying agents include anhydrous sodium sulfate, magnesium sulfate, or calcium chloride.

Once the DCM layers are combined with the drying agent, the mixture is allowed to stand for a certain period of time, allowing the drying agent to absorb water and impurities.

Finally, the purified DCM solution can be separated from the drying agent by filtration, leaving you with a concentrated and clean solution for your subsequent steps in the process.

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When water freezes, the attractions between water molecules weaken and the crystal lattice breaks apart.

Water molecules are the molecules which make up water. A water molecule consists of two hydrogen atoms bonded to a single oxygen atom, with the chemical formula H2O. The strong covalent bonds between the hydrogen and oxygen atoms give water many of its unique properties, such as its ability to dissolve many substances, its high surface tension, and its ability to absorb and release large amounts of heat energy.

As the temperature drops, the water molecules slow down and move closer together, forming a crystalline structure. As the temperature continues to decrease, the attractions between water molecules hold them in place in a crystal lattice, and all molecular motion stops.

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