Choose The Most Appropriate Reagent(S) For The Conversion Of 2-Methylcyclohexanol To 2- Methylcyclohexanone. Он 1. BH3 2. H20

The question is incomplete; the complete question is;

Using a triple beam balance and a graduated cylinder, a student collected data on a sample of an element:

Mass of sample = 18.9 g

Volume of water = 30.0 mL

Volume of water and sample = 35.0 mL

Calculate the density of the sample using sig figs.

Answer:

3.8 g/mL

Explanation:

Mass of sample = 18.9 g

Volume of water = 30.0 mL

Volume of water and sample = 35.0 mL

Volume of the sample = 35.0 mL – 30.0 mL = 5.0 mL

D = m/v

D = 18.9 g / 5.0 mL =3.8 g/mL

Answer:

A

Explanation:

Answer:

The EMF and free enthalpy (or Gibbs Free Energy) of a reaction are directly related.

If the free enthalpy of a redox reaction is negative, then the EMF will be negative, indicating that the reaction is spontaneous and will occur without the need for an external source of energy.

If the free enthalpy of the reaction is positive, then the EMF will be positive, indicating that the reaction is not spontaneous and will not occur without the input of energy.

The relationship between free enthalpy and EMF is shown in the following equation:

∆G = -nFE°(cell), where n is the number of electrons transferred, F is the Faraday constant, and E° is the EMF of a cell under standard conditions.

Answer:

9th:08473 kJ/mol

Explanation:

HAHAHAHAHAHAHAHAHAHA

Answer:

Rows on the periodic table represents a period, which is the number of energy levels or rings. It is the last shell which valence electrons are on.

For example the first row waas Hydrogen and Helium which each have one  energy level.

The esecond row has Carbon and Oxygen which has two energy level.

The third row has Sodium which has three energy levels and so on.

Answer:

3

Explanation:

mass no.=protons+neutrons

mass no.=1+2=3

Answer:

Red #3 is the most polar, and Blue #1 is the least polar.

Explanation:

To order the dyes from most polar to least polar, we need to look at the retention factor values. The lower the retention factor value, the more polar the molecule. So, based on the given values, the order from most polar to least polar would be:

Red #3 - 0.000

Yellow #5 - 0.286

Blue #2 - 0.095

Red #40 - 0.046

Blue #1 - 0.58

A liquid substance that could be used in the laboratory for dissolving dry mortar on floor tiles is vinegar; (i) removing KMnO₄, stains is sodium metabisulfite solution; drying acid anhydrides is concentrated sulfuric acid.

Solvents are substances usually liquids, but may also be gases or solids that dissolve other substances known as solutes.

Solvents are usually used as cleansing agents.

One possible liquid substance that could be used for dissolving dry mortar on floor tiles is a mild acid solution, such as diluted hydrochloric acid or vinegar.

KMnO₄ stains are often difficult to remove, but one substance that can be used is sodium metabisulfite (Na₂S₂O₅) solution. Sodium metabisulfite acts as a reducing agent and can effectively neutralize and remove KMnO₄ stains.

Concentrated sulfuric acid is commonly used in the laboratory as a drying agent. It has a strong affinity for water and can efficiently absorb moisture, including water present in acid anhydrides.

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The type of compound represented by the graph at right is a strong acid (option B).

An acid is generally any compound capable of dissociating into its respective constituent ions when in an aqueous solution.

An acid is categorised as strong or weak depending on whether it can dissociate completely or partially. A strong acid dissociates completely in water.

According to this question, HA, when added to water, dissociates into H+ and A- ions, hence, is a strong acid.

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Answer:

a Binomial Naming System

Explanation:

When the switch is closed, electrons flow from the solid magnesium electrode, Mg(s) to solid silver electrode, Ag(s).

Electronegativity of metals refers to the ability of the atoms of metallic elements to attract electrons from the other metallic elements.

Electronegativity increases down the activity series.

Silver (Ag) will have more tendency to attract electron more than magnesium (Mg).

Thus, when the switch is closed, electrons flow from the solid magnesium electrode, Mg(s) to solid silver electrode, Ag(s).

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Can u give the figure

The diagram representing the ionized state of matter is the plasma state.

2Diagrams of four states of matter

Solid: A solid is a state of matter in which the constituent particles, such as atoms, molecules, or ions, are packed together tightly and firmly held by strong intermolecular forces.

Liquid: A liquid is a state of matter in which the constituent particles, such as atoms, molecules, or ions, are closely packed together but are not held together as strongly as in solids.

Gas: A gas is a state of matter in which the constituent particles, such as atoms, molecules, or ions, are widely separated and are not held together as strongly as in liquids and solids.

Plasma: Plasma is a state of matter in which a gas has been ionized, and it becomes a collection of charged particles such as positive ions and free electrons.

Plasma is a type of ionized gas in which the gas is composed of ions, electrons, and neutral atoms.

Plasma is a state of matter that is similar to a gas in that it has no fixed shape or volume, but unlike gas, it is made up of electrically charged particles.

The electrical charges in plasma are due to the presence of both positive and negative ions.

The most common example of plasma is lightning, and it is also present in fluorescent lights, neon signs, and plasma TVs.

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Answer:

2.951 × 10⁻⁵ M

Explanation:

Let's consider the acid reaction of hydrobromic acid according to Brönsted-Lowry acid-base theory.

HBr(aq) + H₂O(l) ⇒ Br⁻(aq) + H₃O⁺(aq)

Given the pH = 4.530, we can calculate the concentration of the hydronium ion using the following expression.

pH = -log [H₃O⁺]

[H₃O⁺] = antilog -pH = antilog -4.530 = 2.951 × 10⁻⁵ M

When fossil fuels burn, several forms of energy are produced, including:

Heat energy: The primary form of energy released during fossil fuel combustion is heat. Fossil fuels contain chemical energy stored for millions of years, and when they burn, this energy is released in the form of heat. The heat energy can be harnessed for various purposes, such as heating buildings or generating steam to drive turbines.

Light energy: Burning fossil fuels can also produce light energy in the form of flames or glowing embers. This light energy is a byproduct of combustion.

Mechanical energy: Heat generated by burning fossil fuels can be converted into mechanical energy. This is typically achieved by using heat to produce steam, which drives a turbine connected to a generator. The rotating turbine converts the heat energy into mechanical energy, which is further transformed into electrical energy.

Electrical energy: Through the process described above, burning fossil fuels can ultimately generate electrical energy. The mechanical energy produced by the turbine is converted into electrical energy by the generator. Electrical energy can power various devices, appliances, industries, and infrastructure.

It's critical to note that while burning fossil fuels can produce useful forms of energy, it also results in the release of carbon dioxide and other greenhouse gases. This contributes to climate change and environmental concerns. As a result, there is a global shift towards cleaner and renewable energy sources to mitigate these negative impacts.

Answer:

The alkyl halide is secondary

The nucleophile is a poor nucleophile

The solvent is a protic solvent

The product is racemic

Explanation:

The reaction is shown in the image attached.

Alkyl halides undergo nucleophilic substitution by two mechanisms; SN1 and SN2. The particular mechanism that applies depends on;

I) structure of the alkyl halide

ii) nature of the nucleophile

iii) nature of the solvent

Looking at the reaction under review, we can see from the structure that the alkyl halide is a secondary alkyl halide. A secondary alkyl halide may undergo substitution via SN1 or SN2 mechanism depending on the conditions of the reaction.

If the nucleophile is poor, and the solvent is protic, SN1 mechanism is favoured over SN2 mechanism. Since CH3CH2OH is a poor nucleophile and ethanol is a protic solvent, we expect the reaction to proceed via SN1 mechanism leading to the formation of a racemic product.

The organic product is also shown in the second image attached.

Answer:

The somatosensory cortex is a region of the brain which is responsible for receiving and processing sensory information from across the body, such as touch, temperature, and pain.

Area 1 specifically is important in sensing the texture of an object. :)

Hope this helps!

Explanation:

20.0 moles= 80.1 or 80.05g

5.00 moles= 20.0g

1.20×1025moles= 4923.2g

1.00 moles= 4.00g

80.0 moles= 320.2g

Answer:

1.674 x 10^-23 grams

Explanation:

Hydrogen-1 is called Protium

wikipedia

atomic mass of Protium is 1.00794 amu

sciencedirectcom

atomic mass of 10 Protiums is 10.0794 amu

10.0794 amu in grams is

1.6737236x10^-23 grams

Answer:

D. they exchanged electrons

Answer:3.935g/cm3

Explanation:39.35 g. /10cm3 = 3.935g/cm3

10 cm³ of metallic cylinder has a mass of 39.35 g. The density of this cylinder is 3.935 g/cm³.

Density is a measure of the amount of mass per unit volume of a substance. It is an intensive physical property, meaning that its value does not change depending on the size of the object.

Density is calculated by dividing an object’s mass by its volume.

The density of water is 1,000 kg/m³ at 4°C. The unit of density is kg/m³ (kilogram per cubic meter). The SI unit of density is kg/m³

Density = mass/volume

            = 39.35 g/10 cm³

            =3.935 g/cm³.

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This is bob. If you brainliest him. He will reward you with a certain script.

Answer:

Diamond is the hardest things in the world

Answer:

if the pH of a solution is 2.0 that means the solution would be acidic.

Explanation:

Answer:

Explanation:

A compound is a substance made up of two or more distinct elements that are chemically linked to one another in chemistry. These components mix in predetermined ratios to produce a special set of attributes that are distinct from those of the individual components. Chemical reactions such as combination, breakdown, or exchange reactions can all result in the formation of compounds. Water (H2O), sodium chloride (NaCl), and carbon dioxide (CO2) are a few examples of compounds. Chemistry is based on the understanding of the composition and behavior of compounds, which is essential for many applications in science and technology.

All three statements are true:

The statement that best describes how the radioactivity was distributed in one of the first molecules of Protein X that was completely translated is B. Radioactive amino acids were located only at one end of the molecule.

Protein X was one of the first molecules to be completely translated, and the distribution of its radioactivity was unique. Radioactive amino acids were not dispersed throughout the molecule, but instead were located only at one end of the molecule.

This means that the statement B best describes how the radioactivity was distributed in one of the first molecules of Protein X that was completely translated.

With this knowledge, we can be sure that the radioactivity was not evenly distributed throughout the molecule, but was instead concentrated at one end.

This information provides us with a better understanding of the structure of Protein X, and how it is different from other molecules.

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The pH of the buffer solution can be determined using Henderson equation. The pH is obtained as 4.51.

A buffer solution is a solution with constant pH and its maintains the pH of a solution upto a desired point. The pH of a buffer solution is determined using Henderson equation as written  below:

pH = Pka + ln [A-]/[HA]

Where, [A-] be the concentration of the salt and [HA ] be that of the acid.

Given that 10 g of acid and its salt are dissolved in 1 L solution. Thus,

no.of moles of acid = 10 g / 46  = 0.217 in L means 0.217 M

concentration of salt = 10 g/ 84 g in one L = 0.119 M.

ka = 1.8 × 10⁴

pka = log Ka = 4.25

pH = 4.25 + ln (0.119 / 0.217)

     = 4.51

Therefore, the pH of the solution is 4.51.

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