7. Digestion takes place in the
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Answer:

The main function of sensory transduction is the conversion of sensory signals to chemical signals in the nervous system. Sensory transduction occurs in the sensory receptors. In sensory transduction, the sensory neurons play an important role.

Explanation:

Since the breakdown of hydrogen peroxide can cause a reduction in concentration and potency over time, it is a good idea to check the concentration of hydrogen peroxide that has been exposed to air and light.

The chemical student employed titration with potassium permanganate to measure the quantity of hydrogen peroxide.

Using this technique, the volume of potassium permanganate solution needed to completely react with the hydrogen peroxide sample is measured after adding a known quantity of a standard potassium permanganate solution to the hydrogen peroxide sample until the reaction is complete.

Hydrogen peroxide and potassium permanganate react in the following way: 5 H2O2 + 2 KMnO4 + 3 H2SO4 5 O2 + 2 MnSO4 + K2SO4 + 8 H2O

The amount of hydrogen peroxide in the sample may be determined from the volume and concentration of the potassium permanganate solution used in the titration because the reaction uses 5 moles of hydrogen peroxide for every 2 moles of potassium permanganate.

The chemical student should carry out the following procedures to examine the hydrogen peroxide samples in dark and light vials that have been exposed to air for 10, 20, and 30 hours:

1. Make a standard potassium permanganate solution with a known concentration.

2. Pour a known volume of each test sample of hydrogen peroxide into a flask.

3. To serve as a catalyst for the reaction, add a tiny quantity of diluted sulfuric acid to the hydrogen peroxide sample.

4. Continue titrating the hydrogen peroxide sample with the potassium permanganate standard solution until the reaction is finished, which is shown by a lingering pink hue of the potassium permanganate solution.

5. To confirm the correctness of the results, repeat the titration using the same sample.

6. Using the volume and concentration of the potassium permanganate solution used in the titration, determine the concentration of hydrogen peroxide in the sample.

The chemical student can find out if the exposure to air and light has changed the concentration of hydrogen peroxide over time by analysing the concentration of hydrogen peroxide in the light and dark vials after 10, 20, and 30 hours.

The findings may be calculated by comparing them to the original concentration of 3% by weight.

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Between the pairs (A) C≡C and (B) C=C, the triple bond in C≡C is expected to have a shorter bond length than the double bond in C=C. Therefore, (A) C≡C is expected to have the shortest bond length in this pair.

The covalent bond between two carbon atoms in a triple bond, C≡C, has the shortest bond length. This is due to the presence of three pairs of shared electrons, which form a stronger bond. The increased electron density brings the carbon atoms closer together, resulting in a shorter distance between them. As a result, the C≡C bond exhibits a higher level of bonding strength compared to other options. The close proximity of the carbon atoms in the triple bond allows for efficient sharing of electrons, making it a more stable and compact arrangement.

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Answer:

The answer is A. Chemical

Explanation:

Have a nice day

Answer:

Chemical i think i tried googling to figure it out

Explanation:

Answer:

C:Radiation

Explanation:

Pluto

Answer:

i hope this help

Explanation:

Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object as is the case with conduction and convection. Heat can be transmitted through empty space by thermal radiation often called infrared radiation. This is a type electromagnetic radiation.

Answer:

2.17 moles of gas.

Explanation:

To create 50 grams of sodium sulfate, 28.16 grams of sodium hydroxide are needed.

The International System of Units (SI) defines the gram as a unit of mass that is one thousandth of a kilogram. Another concept connected to mass is the gram.

The amount of matter that makes up a substance or an object is truly measured by its mass. The kilogram (kg) is the fundamental SI unit for mass, but lesser quantities are typically measured in grams (g). You would use a balance or perhaps a scale to measure mass.

According to the answer to the previous question, 80 grams of sodium hydroxide and 142 grams of sulfuric acid react to form sodium sulfate. So the amount of sodium hydroxide needed to make 50 grams of sodium sulfate is as follows:

80 × 50 / 142  = 28.16 grams.

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Answer: it's alpha decay (α)

Explanation: mass number of mother nucleus decreases by four and number of protons decreases by two. Smaller nucleus is He-4 nucleus.

Answer:

Alpha decay

Explanation:

Got it right on edge

166 g HCl

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Stoichiometry

Step 1: Define

[RxN - Unbalanced] Mg (s) + HCl (aq) → MgCl₂ (aq) + H₂ (g)

[RxN - Balanced] Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)

[Given] 2.28 mol Mg (s)

Step 2: Identify Conversions

[RxN] 1 mol Mg = 2 mol HCl

Molar Mass of H - 1.01 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of HCl - 1.01 + 35.45 = 36.46 g/mol

Step 3: Stoichiometry

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

166.258 g HCl ≈ 166 g HCl

The HLB (Hydrophilic-Lipophilic Balance) value of a substance refers to its ability to interact with water (hydrophilic) or oil (lipophilic) components. It is a measure of the relative proportions of these two characteristics in a surfactant or emulsifier.

When creating suspensions, a surfactant with a specific HLB value is desired to ensure proper dispersion and stability of the suspended particles. The HLB value of the surfactant should match the nature of the dispersed phase (oil or water) in the suspension. For suspensions with a water-dispersed phase, a surfactant with a higher HLB value (typically ranging from 9 to 20) is preferred. This type of surfactant is hydrophilic in nature and helps to disperse the solid particles in the aqueous phase.

Examples of surfactants with HLB values in this range include:

Polysorbate 80 (HLB value: around 15)

Tween 20 (HLB value: around 16.7)

These surfactants are commonly used in pharmaceutical and cosmetic formulations to stabilize suspensions with water-dispersed phases, allowing for proper mixing and prevention of particle aggregation.

It's important to note that the specific HLB value and surfactant selection for suspensions can vary depending on the specific formulation requirements and compatibility with other ingredients. Therefore, it's recommended to consult formulation guidelines and conduct appropriate testing to determine the most suitable surfactant for a particular suspension formulation.

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The mixture of sodium chloride and broken glasses can be separated by dissolution, filtration, and evaporation respectively.

The mixture containing sodium chloride and broken glasses can be separated as follos:

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Answer:

a: they're used in saucepan handles 'cause they don't soften when heated and also 'cause they cant be bent easily.

b: thermosetting plastics are bad electricity conductors. they don't get moulded and are also hard and strong.

The statement that ethanol cannot be added to the test tube too quickly because it will break up the DNA precipitate is true. Ethanol is commonly used in DNA extraction protocols to precipitate DNA from solution.

When added slowly, the ethanol gradually changes the conditions in the test tube, causing the DNA to come out of solution and form a visible clump. However, if too much ethanol is added too quickly, it can cause the DNA to break apart and become less visible or even invisible. This is because the high concentration of ethanol can disrupt the hydrogen bonds that hold the DNA strands together, causing them to unravel and lose their structure. Therefore, it is important to add ethanol slowly and carefully to avoid breaking up the DNA precipitate.

In summary, it is important to use the appropriate volume of ethanol based on the volume of the DNA solution, as too much or too little ethanol can also affect the precipitation of the DNA.

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Answer:

72

Explanation:

Relative atomic mass of YSO = Relative atomic masses of Y + S + O

This implies; Y + 32 + 16 = 120

Y = 120 - 48

Y = 72

Hence, the relative  atomic mass of Y = 72

The number of moles of chlorine gas that will react to produce 8.26 moles of aluminum chloride is 12.39 moles.

Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, chlorine gas reacts with aluminum to produce aluminum chloride as follows:

Based on the above equation, 3 moles of chlorine gas reacts to produce 2 moles of aluminium chloride.

This means that 8.26 moles of aluminum chloride will be produced by 12.39 moles of chlorine gas.

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Answer:

Chemical energy

Explanation:

The energy stored in the bonds of atoms and molecules, is chemical energy .

Stay safe stay healthy and blessed.

Have a great day !

Thank you

Answer: Chemical energy. :]

Explanation:

The molecules will be closer together and lean toward solid behavior as the intermolecular forces become stronger. More gas-like behavior results from weaker intermolecular forces. Accordingly, the correct response is that bromine has greater intermolecular forces.

Because bromine has a slightly higher molecular weight than fluorine and stronger intermolecular bonds, it doesn't become a gas at ambient temperature like fluorine does. Due to its enormous molecular weight and intense Van Der Waals forces, iodine is a solid at normal temperature. The diatomic molecules of the halogens (F2, Cl2, and so on) are all present. Van der Waals forces are what draw molecules together in most interactions.

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Answer:

4

Explanation:

64.2÷16.5

The moles of CH4 are in 64.2 g CH4.

The mole designates an extremely large number of units, 6.02214076 × 1023. The General Conference on Weights and Measures defined the mole as this number for the International System of Units (SI) effective from May 20, 2019. The mole was previously defined as the number of atoms determined experimentally to be found in 12 grams of carbon-12. The number of units in a mole also bears the name Avogadro’s number, or Avogadro’s constant, in honor of the Italian physicist Amedeo Avogadro (1776–1856). Avogadro proposed that equal volumes of gases under the same conditions contain the same number of molecules, a hypothesis that proved useful in determining atomic and molecular weights and which led to the concept of the mole. (See Avogadro’s law.)

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20. Bohr's model: (a) succeeds only for hydrogen

21. Heisenberg's uncertainty principle is: (a) strictly quantum

22.  In free space the speed of light: (a) is constant

23. Bohr's atomic model has: (c) three quantum numbers

24. Blackbody radiation is explained by: (b) quantization of light

25. The photoelectric effect: (a) won Einstein a Nobel prize

20. Bohr's model succeeds only for hydrogen because it is specifically designed to explain the behavior and spectral lines of hydrogen atoms. It incorporates the concept of electron energy levels and quantized orbits, but it does not accurately describe the behavior of atoms with more than one electron.

21. Heisenberg's uncertainty principle is a fundamental principle in quantum mechanics. It states that it is impossible to simultaneously know the exact position and momentum of a particle with absolute certainty. This principle is a consequence of the wave-particle duality of quantum particles and is a fundamental limitation in our ability to measure certain properties of particles.

22. In free space, the speed of light is constant. This is one of the fundamental principles of physics, known as the speed of light invariance. Regardless of the motion of the source or the observer, the speed of light in a vacuum is always constant at approximately 3x10^8 meters per second.

23. Bohr's atomic model incorporates three quantum numbers to describe the energy levels and electron orbitals of an atom. These quantum numbers are the principal quantum number (n), the azimuthal quantum number (l), and the magnetic quantum number (ml). Together, they provide a framework for understanding the electron configuration of atoms.

24. Blackbody radiation is explained by the quantization of light. According to Planck's theory, electromagnetic radiation is quantized into discrete packets of energy called photons. Blackbody radiation refers to the emission of radiation by an object at a certain temperature. The quantization of light helps to explain the observed distribution of energy emitted by a blackbody at different wavelengths, as described by Planck's law.

25. The photoelectric effect is a phenomenon where electrons are ejected from a material when exposed to light of sufficient energy. It cannot be explained by classical theories of light but is successfully explained by Einstein's theory of photons. Einstein's explanation of the photoelectric effect, for which he won the Nobel Prize in Physics, proposed that light is made up of discrete packets of energy called photons, and the energy of these photons determines whether electrons can be ejected from the material or not.

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Answer:

3).

\(time = \frac{distance}{speed} \\ time = \frac{225}{3} \\ time = 75 \: s\)

4).

\(speed = \frac{distance}{time} \\ speed = \frac{110}{55} \\ speed = 2 \: {ms}^{ - 1} \)

Answer:

Biochemical compounds make up the cells and other structure of organism and carry out life processes.Carbon is the basic of all biochemical compounds so carbon carried life process on the earth

The 22.7 g  in μg ( micro gram )  is 22.7 × \(10^{-6}\) .

We need to convert between units in order to ensure accuracy and prevent measurement misinterpretation.

For example , we do not measure a pencil's length in kilometers . In this situation , one must convert from kilometers  ( km ) to centimeters ( cm ) . In most cases, multiplicative conversion factors are used to convert one unit to another of the same quantity .

Sometimes the units of measurement used may not correspond to the standards required for a particular process or application, as well as the measuring choice and convenience. The mass of object in micro gram unit is less than gram .

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\(\huge\bold{\purple{\bold{⚡a.⚡}}} \)

\(\huge\bold{\red{\bold{⚡c.⚡}}} \)

Both of the above are correct- because :

\(\huge\underline\mathtt\colorbox{cyan}{Hope it helps!}\)

Answer:

Magnetic Forceeeeeeeeeee

A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

The pair of substances that are most likely to form a homogeneous solution is B. H2O and CH3OH. A homogeneous mixture is one in which the components are evenly distributed throughout the mixture. These types of solutions have uniform properties and the same composition throughout.A heterogeneous mixture is one in which the components are not evenly distributed. This means that the mixture has distinct regions or phases that are visibly different from one another. The following are the most likely pairs of substances to form a homogeneous solution:A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

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As you proceed down the periodic table, the metallic character becomes stronger. This is because as the atomic radius increases, there is less attraction between the nucleus and the valence electrons due to the greater distance between them, making electrons simpler to shed.

Answer:

the volume of a give gas simple is directly propotional assolute temperature at constant pressure .the volume of a gavi. amount of gass is inversely propotional ot Its pressure when temperature is help constant

The preparation of bases involves several methods that are used to create substances with basic or alkaline properties are Reaction of metal with water, Reaction of metal oxide with water, Neutralization reaction, Ammonia gas dissolving in water and Partial neutralization of a strong base with a weak acid.

Reaction of metal with water: Certain metals, such as sodium or potassium, react with water to form hydroxides. For example, sodium reacts with water to produce sodium hydroxide (NaOH).

Reaction of metal oxide with water: Metal oxides, such as calcium oxide (CaO) or magnesium oxide (MgO), can be added to water to form metal hydroxides. This process is known as hydration. For instance, when calcium oxide reacts with water, it forms calcium hydroxide (Ca(OH)2).

Neutralization reaction: Bases can be prepared by neutralizing an acid with an appropriate alkaline substance. This involves combining an acid with a base to form water and a salt. For example, mixing hydrochloric acid (HCl) with sodium hydroxide (NaOH) results in the formation of water and sodium chloride (NaCl).

Ammonia gas dissolving in water: Ammonia gas (NH3) can dissolve in water to form ammonium hydroxide (NH4OH), which is a weak base.

Partial neutralization of a strong base with a weak acid: Mixing a strong base, such as sodium hydroxide (NaOH), with a weak acid, like acetic acid (CH3COOH), results in the formation of a base with a lesser degree of alkalinity.

These methods are utilized in laboratories, industries, and various applications where bases are required, such as in the production of cleaning agents, pharmaceuticals, and chemical reactions. Each method has its own advantages and specific applications depending on the desired base and its properties.

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What are the various methods involved in the preparation of bases?

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