what is subatomic particles. the mass and charge of these particles​

Answer:

118 elements have been discovered so far

Explanation:

Deprotonation of phenol by NaOHPhenol is a weak acid with a pKa value of 10, so it is not very acidic but it can be deprotonated with a strong base like sodium hydroxide (NaOH). The mechanism for this reaction is a simple acid-base reaction where NaOH acts as a base and removes the proton (H+) from phenol.

The curved arrow mechanism is shown below:Here, the Na+ ion comes in and removes the H+ ion from the O-H bond in phenol and forms water as a by-product. The major organic product is phenoxide ion (C6H5O−) which is formed after the deprotonation reaction.SN2 reaction of phenoxide with chloroethane Phenoxide ion is a good nucleophile because it has a negative charge on the oxygen atom which is able to attack the positively charged carbon atom in chloroethane. The mechanism for this reaction is a nucleophilic substitution (SN2) reaction where the phenoxide ion acts as a nucleophile and replaces the chloride ion in chloroethane. The curved arrow mechanism is shown below:Here, the phenoxide ion attacks the carbon atom in chloroethane, and the chloride ion leaves as a leaving group. The major organic product is ethyl phenyl ether (C6H5OC2H5) which is formed after the SN2 reaction.

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Specific heat capacity if the unknown metal is -0.450 J/(g°C).

The measure of heat complexity needed to increase the temperature of a single unit of substance mass by one degree Celsius is known as specific heat capacity. This factor is crucial in determining how much energy is required for temperature changes in a given substance.

q = mcΔT

where q is the change in thermal energy, m is the mass of the metal, c is its specific heat capacity, and ΔT is the change in temperature.

In this case, we have:

m = 150 g

ΔT = 22.4°C - 12.6°C = 9.8°C

q = -662 J

Plugging in the values,

-662 J = (150 g) c (9.8°C)

Solving for c, we get:

c = -662 J / (150 g × 9.8°C) = -0.450 J/(g°C)

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Answer:

line 2

Explanation:

Because it's where the products and reactants meet together.

The system at dynamic equilibrium is 2.

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Answer: The cell potential is the measure of how much potential energy the cell has, and it can be calculated by subtracting the standard potentials of each half-cell. The cell potential of this concentration cell is 0.54 V (to two significant figures). This potential difference is the amount of potential energy available in the cell and is measured in volts.

A concentration cell is a cell that is constructed by two half-cells with different concentrations of the same electrolyte. In this case, a concentration cell has been constructed using silver metal and solutions of 0.05 m and 1.5 m silver nitrate. The cell potential is the measure of how much potential energy the cell has, and it can be calculated by subtracting the standard potentials of each half-cell. The cell potential of this concentration cell is 0.54 V (to two significant figures).

The cell potential is determined by the difference in the standard potentials of the two half-cells. The standard potential of the silver half-cell is 0.799 V, and the standard potential of the silver nitrate half-cell (using 0.05 m and 1.5 m concentrations) is 0.259 V. To calculate the cell potential, subtract the standard potential of the silver nitrate from the silver: 0.799 V - 0.259 V = 0.54 V.

The cell potential of a concentration cell is determined by the difference between the standard potentials of the two half-cells, which can be calculated by subtracting the standard potential of the silver nitrate from the silver, resulting in 0.54 V (to two significant figures). This potential difference is the amount of potential energy available in the cell and is measured in volts.


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Explanation:

The degree of deflection directly relates to the mass of the ion: the lighter the ion, the greater the deflection and the heavier the ion, the lesser the deflection. The beam of ions is then detected

and the relative abundance of each isotope of an element canthen be determined.

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The greater the mass of the isotope lesser will be the amount of deflection. The amount of deflection is related to the mass of the isotope.

An isotope is one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with different atomic masses and physical properties.

As each isotope has a different mass number, this number is written after the element name for the atom. For example, an atom of carbon with a mass number of 12 will be labeled as an atom of carbon-12. Carbon-13 and carbon -14 is also examples of carbon atom.

Thus, the greater the mass of the isotope lesser will be the amount of deflection. Deflection is depend upon the mass of atom.

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NMR spectroscopy or nuclear magnetic resonance spectroscopy is very important in the determination of the organic structures. This technique relies on the interaction of a particular nucleus with a magnetic field followed by the absorption of energy of a specific frequency, depending on the chemical environment of the nucleus.

NMR spectroscopy is the use of NMR phenomena to study the physical, chemical, and biological properties of matter. Chemists use it to determine the identity and structure of molecules. Physicians use magnetic resonance imaging (MRI), a multidimensional NMR imaging technique, for diagnostic purposes.

NMR spectroscopy is an analytical chemistry technique used in quality control to determine the content and purity of organic compounds and the molecular structure of compounds. This technique includes nuclear detection.

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Answer:

d) water

Explanation:

Answer:

C) sodium chloride

Answer:

Neuron Tissues

Explanation:

Answer:

the processing

Explanation:

Exothermic waves create a chemical reaction that heats the waving solution and speeds up the rate of the reaction.

When an exothermic wave occurs during a chemical reaction, it means that the reaction releases heat energy into the surrounding environment. This increase in temperature of the waving solution contributes to the overall reaction kinetics by providing additional energy to the reactant molecules.

The increase in temperature due to the exothermic wave leads to an acceleration of the reaction rate. This is because higher temperatures typically result in increased molecular motion and collision frequency. The kinetic energy of the molecules rises, allowing them to overcome activation energy barriers more easily and facilitating successful collisions between reacting particles. As a result, the reaction progresses more rapidly.

Hence, Exothermic waves create a chemical reaction that heats the waving solution and speeds up the rate of the reaction.

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Answer:

\(V_2=146mL\)

Explanation:

Hello there!

In this case, since the equation for the calculation of dilutions is:

\(M_1V_1=M_2V_2\)

Whereas M is the molarity and V the volume, because the final concentration is lower than the initial. Thus, since we are asked to calculate the final volume, we solve for V2 as follows:

\(V_2=\frac{M_1V_1}{M_2}=\frac{0.885M*82.5mL}{0.500M}\\\\V_2=146mL\)

Best regards!

Answer:

The way I just figured it out myself and made another acc to put the answer on :/

Explanation:

To determine the order of the reaction with respect to the ligand and substrate, we can use the method of initial rates.

For the substrate, we keep the concentration of the ligand constant at 1.0 M and vary the substrate concentration to get the following initial rates:

[substrate] (M) | [ligand] (M) | rate (M/s)
--- | --- | ---
1.0 | 1.0 | 5
5.0 | 1.0 | 25
10.0 | 1.0 | 50

When we double the substrate concentration from 5.0 M to 10.0 M, we see that the rate of the reaction also doubles. This suggests that the reaction is first order with respect to the substrate.

For the ligand, we keep the concentration of the substrate constant at 5.0 M and vary the ligand concentration to get the following initial rates:

[substrate] (M) | [ligand] (M) | rate (M/s)
--- | --- | ---
5.0 | 1.0 | 25
5.0 | 5.0 | 125
5.0 | 25.0 | 625

When we increase the ligand concentration from 1.0 M to 5.0 M, we see that the rate of the reaction increases by a factor of 5. When we increase the ligand concentration from 5.0 M to 25.0 M, we see that the rate of the reaction increases by a factor of 5 again. This suggests that the reaction is second order with respect to the ligand.

Therefore, the rate equation for this reaction is:

Rate = k [substrate]^1 [ligand]^2

where k is the rate constant.

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Answer/Explanation:

No compounds must be made up of two or more elements. otherwise it wouldn't be a compound. There must be some type of combination or it isn't a compound.

Student A needs to measure 0.1179 L (or 117.9 mL) of the 37% HCl solution from the Aldrich 2.5 L bottle purchased from Sigma-Aldrich and dilute it to a final volume of 2.85 L to prepare a 0.500 M HCl solution.

To prepare 2.85 L of 0.500 M HCl solution, we need to determine the amount of HCl required in moles and then use the concentration and volume relationship to calculate the volume of the 37% HCl solution needed.

Calculate the moles of HCl required:

Moles of HCl = (0.500 mol/L) x (2.85 L) = 1.425 moles

Calculate the mass of 37% HCl solution required:

Mass of 37% HCl solution = (1.425 moles) / (0.37) = 3.851 moles

Calculate the volume of 37% HCl solution required:

Density of 37% HCl solution = 1.19 g/mL

Mass of 37% HCl solution = (3.851 moles) x (36.46 g/mol) = 140.4 g

Volume of 37% HCl solution = (140.4 g) / (1.19 g/mL) = 117.9 mL

= 0.1179 L

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Answer: A beta particle is being emitted, not an alpha particle.

A solution has a mass of 15.03 grams, and a volume of 18.4 ml. The density of the solution is 0.8 g/mL.

given that,

mass = 15.03

volume =18.4

Density =?

Density = mass / volume

            =15.03/ 18.4

            = 0.816 g/mL

            = 0.8 g/mL

A substance's density is defined as its mass per unit volume (more specifically, the volumetric mass density; also known as specific mass). Although the Latin letter D may also be used, the sign most frequently used for density is (the lower case Greek letter rho). Density is mathematically defined as mass divided by volume.

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Answer:

Explanation:

To convert a temperature from degree Celsius to Kelvin add 273 to the value in degree Celsius

That's

K = 273 + °C

where

K is the temperature in Kelvin

°C is the temperature in degree Celsius

From the question we have

K = 273 + 133

We have the final answer as

Hope this helps you

Irony: a situation in which there is a contrast between expectation and reality.Irony can take many different forms.

The verbal irony, dramatic irony, and situational irony are the three types .Irony occurs in literature AND in life whenever a person says something or does something that departs from what they (or we) expect them to say or do.

Irony in the story 'Dusk':

Ironically, the main character, who thinks he is a good character judge, is duped by the young man who sat next to him on the park seat.

According to Gortsby, darkness is a time when dejected and shady people emerge.

The term irony has its roots in the Greek comic character Eiron, a clever underdog who by his wit repeatedly triumphs over the boastful character Alazon. The Socratic irony of the Platonic dialogues derives from this comic origin.

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When the pressure (P) and temperature (T) are constant, the volume (V) constituting an ideal gas (n) directly varies with the amount of moles constituting the gas (n).

A measurement of three-dimensional space is volume. It is frequently expressed quantitatively using SI-derived units, like the cubic metre or litre, or different imperial or US-standard units, including the gallon, quart and cubic inch. Volume and length (cubed) have a symbiotic relationship.

The volume of an item is typically thought of as its capacity, not as the amount of space it takes up. In other words, the volume is the quantity of fluid (liquid or gas) that the container may hold. When the pressure (P) and temperature (T) are constant, the volume (V) constituting an ideal gas (n) directly varies with the amount of moles constituting the gas (n).

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A new amino acid is added to the growing peptide chain in a sequential order.

During protein synthesis, a new amino acid is added to the growing peptide chain in a specific and sequential order. This process occurs on the ribosomes, where transfer RNA (tRNA) molecules carry the corresponding amino acids and match them with the codons on the messenger RNA (mRNA) template.

The addition of a new amino acid involves several steps. First, an aminoacyl-tRNA synthetase enzyme attaches the appropriate amino acid to its corresponding tRNA molecule, forming an aminoacyl-tRNA complex. Then, this complex binds to the codon on the mRNA through complementary base pairing, ensuring the correct amino acid is positioned in the growing peptide chain.

With each cycle of protein synthesis, the ribosome advances along the mRNA molecule, and a new amino acid is added to the growing peptide chain. This sequential addition of amino acids follows the specific genetic code determined by the mRNA sequence, which ultimately determines the primary structure and identity of the protein being synthesized.

Overall, the process of adding a new amino acid to the growing peptide chain occurs in a precise order dictated by the mRNA sequence and is facilitated by the complementary base pairing between tRNA and mRNA codons.

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Answer:

So, the combustion of 100.0g of propane produces 27.3 g of carbon dioxide.

Explanation:

First, what we will do is balance the equation so that the atoms in the reactants match the atoms in the products.

We start by balancing the carbon. We have 3 carbon atoms on the reactant side, so we will place the coefficient 3 on the reactant side of the carbon dioxide molecule.

\(C_{3}H_{8}+xO_{2} 3CO_{2}+yH_{2}O\)

For hydrogen we have 8 atoms in the reactants, we place the coefficient 4 in front of the water molecule to match.

\(C_{3}H_{8}+5O_{2} 3CO_{2}+4H_{2}O\)

Finally, we have 10 oxygen in the products. To match the number of oxygen atoms we will place the coefficient 5 in front of the O2 molecule.

\(C_{3}H_{8}+5O_{2} 3CO_{2}+4H_{2}O\)

So, for each molecule of propane, we will obtain 3 molecules of carbon dioxide (CO2). We will calculate now the number of moles of propane. We will use the mass molar of propane.

Mass molar of propane = 44.1 g/mol

\(moles of propane=\frac{mass of propane}{mass molar of propane}\\ moles of propane=\frac{100 g}{44.1 g/mol}\\ moles of propane=2.26 mol\)

So, we will multiply the moles of propane by 3 to obtain the moles of dioxide carbon.

Moles of CO2 = 2.26 mol x 3 = 6.80 mol of CO2

We already we the moles of CO2, now to convert these moles in mass we will use the molar mass of the CO2.

Molar mass of CO2 = 44.01 g/mol

\(Mass of CO2=Moles of CO2x Molar mass of CO2\\Mass of CO2=6.80 mol x\frac{44.01g}{mol}\\ Mass of CO2=27.3g\)

So, the combustion of 100.0g of propane produces 27.3 g of carbon dioxide.

Human activities that disrupt the carbon cycle include the burning of fossil fuels. The statement that best summarizes the disruption of the carbon cycle due to the burning of fossil fuels is: b) Burning fossil fuels adds carbon compounds to all Earth systems.

When fossil fuels, such as coal, oil, and natural gas, are burned, carbon that has been stored in these fuels for millions of years is released into the atmosphere as carbon dioxide and other greenhouse gases. This process significantly increases the amount of carbon compounds in Earth’s systems, including the atmosphere.

The burning of fossil fuels contributes to the increase in atmospheric CO2 levels, which is a major driver of anthropogenic climate change. The additional carbon compounds released from burning fossil fuels disrupt the natural balance of the carbon cycle by adding more carbon to the atmosphere than can be naturally absorbed by Earth’s systems. This leads to an accumulation of greenhouse gases and contributes to global warming and associated climate impacts. While other statements may partially describe the effects of burning fossil fuels on the carbon cycle, option b provides the most accurate and comprehensive summary of the disruption caused by this activity.

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The acetic acid in vinegar has a molar concentration of 0.530 M.

When the chemical formula and molecular weight of the drug are known, the concentration can be calculated. Any substance's molar concentration in a solution can be simply calculated.

Molar concentration is the measurement of a solution's concentration as the No.  of moles of a solute inside a liter of a solution.

The following equation can be used to compute the concentration or volume of the solutions:

M₁V₁ = M₂V₂

where M1, V1, M2, and V2 represent the volume and concentration of the concentrated & diluted solution, respectively.

Given a NaOH concentration, M1 = 0.1931 M (which should be necessary to apply the broth dilution),

and to calculate the molar concentration of acetic acid)

The volume of NaOH, V1, is 27.48 mL.

V2 = acetic acid volume in milliliters

In equation (1), substitute the values of V1, M1, and V2 as well as volume:

(0.1931) X (27.48) = (10) X (V₂)

V₂ = 0.530 M

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The dot and cross diagram is a way of representing a molecule along with its valence electrons and respective bonds. Valence electrons are drawn as a dot or a cross, each element will have a different connotation. Around the atoms, circles are drawn that indicate the bonds and how the electrons are shared.

Carbon has 4 valence electrons and oxygen has 6, the dot-and-cross diagram of CO2 will be: