which one of the following solutions will have the greatest concentration of hydroxide ions? group of answer choices 0.368 m sulfuric acid 1.10 m rubidium hydroxide 0.368 m ammonium hydroxide 0.368 m calcium hydroxide 0.368 m potassium hydroxide

The concentration of in the cathode's half-cell solution is 5.12 × 10^-6 M if the anode's half-cell is 1 M.

While answering questions on the Brainly platform, a question answering bot should always be factually accurate, professional, and friendly. Additionally, it should be concise and should not provide extraneous amounts of detail,

ignore any typos or irrelevant parts of the question, and use the terms mentioned in the question appropriately.In a concentration cell that was set up at using two hydrogen electrodes, the cell generates a potential of . The question is, what is the concentration of in the cathode's half-cell solution, if the anode's half-cell is ?

The given data is:Potential of the cell, °cell = 0.059 log10 [H+]cathode/[H+]anode= -0.0418 V (negative because H2 gas concentration is higher in the anode than in the cathode)Since we know the value of °cell,

we can calculate the cathode half-cell potential as:

E cathode = °cell - E anode = 0.0008 VAnd then using the Nernst equation, we can find the concentration of H+ in the cathode half-cell as follows:

E cathode = E° - (RT/nF) ln [H+]H+/H2The value of E° at room temperature,

T = 298K is zero, and the number of electrons involved,

n = 2. Hence,0.0008 V = -(0.0592/2) log10[H+]H+/H2[H+]H+/H2 = 5.12 × 10^-6 M.

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Answer:

Constant volcanic eruptions Hope this helps!

Answer:

3.56

Explanation:

To determine which layer is aqueous and which layer is organic during the extraction of caffeine :-

1.  Add water to the two layers.

2. Another option is to look for density values ​​for the two solutions. When extracting caffeine, we usually use dichloromethane as a solvent to extract the caffeine.

3. Another method is to measure the volume of each layer.

Extraction of caffeine : Caffeine is water soluble, but boiling tea leaves produces tannins and gallic acid. Two components of the latter can be converted into water-insoluble calcium salts. Caffeine can be extracted from water in almost pure form by methylene chloride.

The purpose of this study was to determine caffeine levels in well-known types of tea and coffee.

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Answer:

There are 5.785 moles of Al

Explanation:

Answer:

Eukaryotes

Explanation:

The process used by the body for transporting broken-down molecules is known as passive transport.

This process involves the movement of molecules in and out of cells without the use of energy or the need for ATP. Passive transport occurs through a variety of mechanisms, including diffusion, osmosis, and facilitated diffusion.

In diffusion, molecules move from an area of higher concentration to an area of lower concentration until the concentration of the molecules is equal.

Osmosis is the diffusion of water molecules through a selectively permeable membrane from a high concentration of water to a low concentration of water.

Facilitated diffusion is the process by which molecules move through protein channels in the cell membrane. This process does not require the use of energy and is a type of passive transport.

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The order of the mass measurements from smallest to largest is: 10 mg: This is the smallest unit of mass measurement in the given list. It is equal to 0.01 grams or 0.00001 kilograms.

10 g: This is the second smallest unit of mass measurement in the given list. It is equal to 10,000 milligrams or 0.01 kilograms.

10 kg: This is the second largest unit of mass measurement in the given list. It is equal to 10,000 grams or 10,000,000 milligrams.

10 Mg: This is the largest unit of mass measurement in the given list. It is equal to 10,000 kilograms or 10,000,000 grams.

It is important to understand the different units of mass measurement and their conversions, as they are used in many fields, such as science, engineering, and medicine, to measure and calculate the properties of objects and materials.

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Product B because it has a lower energy level than Product C's transition state, which leads to Product C.

The series of reactions required to create a desired product are described by a reaction pathway. The distribution strategy for a product is determined by things like percentage yield. Atomic economics. reaction time. is a connected graph with chemical species as its nodes. If a reaction transfers material from one species to the other, an edge unites the two. An vector from reactant toward the product is depicted as the edge.

Energy, or ATP, is created by chemical reactions within our cells. All living things require energy to survive, and Adp would be a reactant that fuels a number of other chemical reactions inside cells. Cells generate energy through a process called cellular respiration.

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Answer:

Float a few ping pong balls in your water tub. The slightest breeze will create waves in the water and keep a solid layer of ice from forming for a lot longer.

A student dilutes the 11.4 ml of a 7.04 M perchloric acid solution to the total volume of 200.0 ml. The concentration of the diluted solution is 0.40 M.

The Volume of stock solution, V₁ = 11.4 mL

The Molarity of stock solution, M₁ = 7.04 M

The Volume of diluted solution, V₂ = 200 mL

The molarity of diluted solution, M₂ = ?

The dilution law is given as :

M₁V₁ = M₂V₂

M₂ = M₁ V₁ / V₁

M₂ = ( 7.04 × 11.4 ) / 200

M₂ = 0.40 M

Thus, The molarity of the diluted solution is 0.40 M.

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Answer:

1. Insulin

2. Keratin

Explanation:

Proteins are one of the four biological molecules found in living systems. They are polymeric molecules made up of monomeric units called AMINO ACIDS. Proteins perform a wide variety of functions in the body ranging from enzymatic functions to structural roles.

Two examples of proteins found in the body are keratin, insulin. Keratin is a structural protein located in the skin, hair and nails while insulin is an enzymatic protein that aids in digestion.

a) The collision frequency of dimethyl ether can be calculated using the kinetic theory of gases. The collision frequency is given by the equation:

\(\[\text{{Collision frequency}} = \frac{1}{4} \sqrt{\frac{8 \cdot k \cdot T}{\pi \cdot m}}\]\)

where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the mass of dimethyl ether molecule. Given that the angle-averaged radius of dimethyl ether is 0.25 nm, we can calculate the mass of the molecule using its density or molar mass.

b) To calculate the decomposition rate constant of (CH3)2CO, we need additional information such as the reaction mechanism and reaction conditions. The rate constant for a chemical reaction depends on factors like temperature, activation energy, and the presence of catalysts. Without these details, it is not possible to calculate the decomposition rate constant accurately.

In conclusion, the collision frequency of dimethyl ether at a specific temperature can be calculated using the kinetic theory of gases. However, to calculate the decomposition rate constant of (CH3)2CO, additional information about the reaction conditions and mechanism is needed.

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Answer:

B.

Explanation: Because it's at the bottom of the layer so it gets least sun and solar energy.

Answer:

Explanation

substance X will have least volume because it has maximum density and using the relation volume inversly propotional to the density of a substance.

substance Z will have least mass beacause it has least density and using relation mass is directly proportional to the volume of a substance .

substance Z will float in water because its density is less than the water (1 gm/cm^3).

The order of decreasing strength as oxidizing agents in acidic solution for the first group of compounds is: Cr2O7^2- > Cl2 > H2O2 > O2 > Cu^2+.

For the second group of compounds, the order of decreasing strength as oxidizing agents in acidic solution is: H2O2 > I- > Sn^2+ > Zn > Al.
Note that H2O2 is the common oxidizing agent in both groups and it is stronger than any of the other compounds listed. Additionally, the strength of the oxidizing agent increases as we move from left to right across the periodic table for a given group of compounds.  Overall, the strength of oxidizing agents in acidic solution depends on a variety of factors such as the element's electronegativity, ionization energy, and electron affinity. A weak acid is one that has just a little amount of ion dissociation in a solution.  Strong acids have a lower pH value than weak acids at the same concentration. Acetic acid, hydrogen sulphide, formic acid, hydrofluoric acid, and others are examples of weak acids.

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Answer:

True

Explanation:

In their laboratory in Paris, Marie and Pierre Curie were able to successfully separate radioactive radium salts from the mineral pitchblende. In 1898, the Curies' study of pitchblende led to the discovery of the elements radium and polonium.

The majority of radium's functions have been replaced by those of other radioactive substances or radiation-emitting machinery. Radium is still utilized today, but, in a few different contexts, like industrial radiography.

Scientists and medical experts eventually understood that the ailments of these individuals were being brought on by internal contamination as from radium they swallowed. On watch and clock dials, radium was no longer utilized by the 1970s.

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That is the symbol that depicts an oxidizing reagent

The circle with fire on top line underneath is a symbol that depicts an oxidizing reagent, hence option D is correct.

A supply of fuel (such as flammable materials), a source of oxygen, and an explosion or other source of ignition make up the fundamental elements of a fire. Only hazardous goods that are oxidizing solids, liquids, or gases are given the flame over circle symbol.

A product or its fumes may readily catch fire if used close to heat, flames, or sparks, according to the flame sign. Products made with flammable chemicals include aerosol cans, lighter fluid, and paint thinner. The product is lethal.

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The given question is incomplete, so the most probable complete question is attached in the image below.

Answer:

2.4mL

Explanation:

Answer:

2.44

Explanation:

The anode of the Downs cell, you would expect the half-reaction of the oxidation of chloride ions (Cl-) to chlorine gas Cl2. This is because the anode is where oxidation reactions occur in electrolysis, and in the electrolysis of molten sodium chloride, the chloride ions are present in the electrolyte and are more easily oxidized than the sodium ions.

The chloride ions will lose electrons and form chlorine gas at the anode. happy to help with your question. In the Downs cell, an industrial cell used for electrolysis of molten sodium chloride, the half-reaction at the anode is the oxidation of chloride ions to produce chlorine gas. Here's the half-reaction:2Cl⁻l → Cl₂ g + 2e⁻At the anode, the chloride ions Cl⁻ lose electrons and form chlorine gas Cl₂, releasing two electrons in the process.

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Answer:

The molar mass of nickel chloride (NiCl2) is 129.593 amu/mol.

To determine the molar mass of nickel chloride (NiCl2), we need to add the atomic masses of one nickel atom and two chlorine atoms, as there are two chlorine atoms in each molecule of NiCl2.

The atomic mass of nickel (Ni) is 58.693 amu, and the atomic mass of chlorine (Cl) is 35.45 amu. Therefore, the molar mass of NiCl2 can be calculated as:

Molar mass of NiCl2 = atomic mass of Ni + (atomic mass of Cl x 2)

Molar mass of NiCl2 = 58.693 amu + (35.45 amu x 2)

Molar mass of NiCl2 = 58.693 amu + 70.90 amu

Molar mass of NiCl2 = 129.593 amu/mol

Therefore, the molar mass of nickel chloride (NiCl2) is 129.593 amu/mol.

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Answer:

3 parts

Explanation:

Eukaryotic cells have 1) a membrane-bound nucleus; 2) numerous membrane-bound organelles and 3) several, rod-shaped chromosomes.

Answer:

Using glucose to provide energy for the body

Explanation:

Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity: