Which particles are found in an atom have charges

Answer:

16.6 g of Al are produced in the reaction of 82.4 g of AlCl₃

Explanation:

Let's see the decomposition reaction:

2AlCl₃ →  2Al  + 3Cl₂

2 moles of aluminum chloride decompose to 2 moles of solid Al and 3 moles of chlorine gas.

We determine the moles of salt:

82.4 g . 1mol/ 133.34g = 0.618 moles

Ratio is 2:2. 2 moles of salt, can produce 2 moles of Al

Then, 0.618 moles of salt must produce 0.618 moles of Al.

Let's convert the moles to mass → 0.618 mol . 26.98g /mol = 16.6 g

37.5 moles of iron will produce 2990.31 grams of Fe₂O₃.

To determine the number of grams of Fe₂O₃ produced from 37.5 moles of iron (Fe), we need to use the balanced chemical equation for the reaction in which iron reacts to form Fe₂O₃.

The balanced equation for the reaction is:

4Fe + 3O₂ -> 2Fe₂O₃

From the balanced equation, we can see that 4 moles of iron react to produce 2 moles of Fe₂O₃. This means that the molar ratio between Fe and Fe₂O₃ is 4:2 or 2:1.

Now, we can set up a simple proportion to calculate the number of moles of Fe₂O₃ produced:

(37.5 moles Fe) * (2 moles Fe₂O₃ / 4 moles Fe) = 18.75 moles Fe2O3

So, 37.5 moles of iron will produce 18.75 moles of Fe₂O₃.

To convert moles to grams, we need to use the molar mass of Fe₂O₃. The molar mass of Fe₂O₃ can be calculated by adding the atomic masses of iron (Fe) and oxygen (O) in the compound:

(2 x atomic mass of Fe) + (3 x atomic mass of O) = (2 x 55.845 g/mol) + (3 x 16.00 g/mol) = 159.69 g/mol

Now, we can calculate the mass of Fe₂O₃ produced:

Mass = moles x molar mass

Mass = 18.75 moles x 159.69 g/mol = 2990.31 grams

Therefore, 37.5 moles of iron will produce 2990.31 grams of Fe₂O₃.

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Carnot's work attracted little attention during his lifetime, but it was later used by Rudolf Clausius and Lord Kelvin to formalize the second law of thermodynamics and define the concept of entropy.

Sadi Carnot was a French physicist who is known for his studies on the efficiency of heat engines. In 1824, he published a book called "Reflections on the Motive Power of Fire," in which he laid out the principles of thermodynamics and introduced the concept of entropy. His work was crucial in the development of the steam engine, as it helped engineers to understand how to make engines more efficient. Carnot's studies on steam engine efficiency laid the groundwork for the development of the concept of entropy, which is a measure of the disorder or randomness of a system. (C)

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Answer: The concentration of a solution made by combining 52 grams of  \(NaCH_{3}COO^{-}\) with 150 mL of water is 4.22 M.

Explanation:

Given: Mass = 52 grams

Volume = 150 mL (1 mL = 0.001 L) = 0.150 L

Molarity is the number of moles of a substance present in liter of a solution.

And, moles is the mass of a substance divided by its molar mass.

Hence, moles of \(NaCH_{3}COO^{-}\) (molar mass = 82.034 g/mol) is as follows.

\(Moles = \frac{mass}{molar mass}\\= \frac{52 g}{82.034 g/mol}\\= 0.633 mol\)

Therefore, concentration of given solution is as follows.

\(Molarity = \frac{moles}{Volume(in L)}\\= \frac{0.633 mol}{0.150 L}\\= 4.22 M\)

Thus, we can conclude that the concentration of a solution made by combining 52 grams of  \(NaCH_{3}COO^{-}\) with 150 mL of water is 4.22 M.

It is impossible for an element to have an atomic number of 110.5 because atoms of an element all have the same whole number of protons. Thus, option C is correct.

The atomic number is the number of protons in the nucleus of an atom. The number of protons defines the identity of an element. The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom.

For example, in a sodium atom, there are 11 electrons and 11 protons.

Thus, the atomic number of Na atom = number of electrons = number of protons is equal to 11.

The atomic number is based only on the number of protons in the nucleus of an atom. Since this is a count of whole numbers, it cannot be a decimal. It's either element 110 or 111, not 110.5.

There is no half proton in the atom, hence we can not have an atomic number of 110.5.

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The NO bond length in  \(\rm N-O\) (115 pm) is shorter than that in  \(\rm [NO][Na]\) (119 pm) due to the difference in the electronic structure of the two compounds.

A molecular orbital diagram is a graphical representation of a molecule that shows its constituent atoms and the bonds between them.

In \(\rm N-O\), the bond is a covalent bond, meaning that the electrons are shared between the nitrogen and oxygen atoms. In contrast, the bond in  \(\rm [NO][Na]\) is an ionic bond, meaning that the electrons are transferred from one atom to another.

In an ionic bond, the atoms are held together by the electrostatic attraction between the positively charged and negatively charged ions. The presence of the sodium ion in \(\rm [NO][Na]\) causes the NO bond to be longer due to the repulsion between the negatively charged oxygen atom and the positively charged sodium ion.

Therefore, the NO bond in \(\rm N-O\), is shorter than that in \(\rm [NO][Na]\) due to presence of sodium ion in  \(\rm [NO][Na]\) which causes repulsion between the negatively charged oxygen atom and the positively charged sodium ion resulting into longer NO bond. The molecular diagram of NO is shown below.

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There are two main types of sources for particulate matter (PM):

Direct sources: These release PM directly into the atmosphere. Some major direct sources include:

•Vehicle emissions - Diesel engines and gasoline engines release PM directly as exhaust. This includes particulate matter from brake pads and tire wear.

•Coal combustion - Burning coal for electricity generation, heating, or other uses releases PM directly into the air.

•Biomass burning - Burning wood, agricultural waste, or other biomass releases PM directly. This includes open burning of debris, wildfires, and residential wood burning.

•Industrial processes - Certain industrial activities like steel production, cement manufacturing, mining operations, etc. produce and release PM directly into the atmosphere.

Indirect sources: These do not release PM directly but facilitate the generation of PM in the atmosphere. Some important indirect sources are:

•Road dust - PM gets resuspended into the air from paved and unpaved roads. Vehicle traffic stirs up the dust.

•Construction activities - Construction sites, demolition of buildings, and land clearing can generate PM through crushing, grinding, transport, and handling of materials.

•Waste management - Landfills, incinerators, waste disposal, and recycling operations can lead to PM emissions through windblown debris, waste handling, and uncontrolled burning of waste.

•Agricultural activities - PM comes from tilling fields, plowing, pesticide/fertilizer application, harvesting, livestock farming, etc. Dust from farms and manure/fertilizer use contribute significantly.

•Population - A larger population means more residential electricity usage, transportation needs, waste generation, and other activities that ultimately lead to more PM emissions.

So in summary, direct sources are those that release PM directly while indirect sources facilitate the generation and resuspension of PM in the atmosphere through various activities and processes. Controlling emissions from both direct and indirect sources is important to reduce particulate matter pollution.

The voltage produced across the artery would be approximately 79,200 volts.

An electric field is a region of space around a charged object where an electrically charged particle experiences a force due to the presence of the charged object.

Assuming the singly ionized sodium ion is moving in a magnetic field, it will experience a force given by the equation:

F = q × v × B

where q is the charge of the ion, v is its velocity, and B is the magnetic field strength.

To find the resulting electric field, we need to set the magnetic force equal to the electric force:

q × v × B = q × E

where E is the electric field strength.

Solving for E, we get:

E = v × B

Substituting the values for v and B (assuming a typical magnetic field strength of 1 Tesla), we get:

E = (3.6 x 10⁷ m/s) × (1 T) = 3.6 x 10⁷ V/m

To find the voltage produced across an artery with a diameter of 2.2 mm, we can use the equation:

V = E × d

where d is the distance across which the electric field is applied (i.e., the diameter of the artery).

Substituting the values, we get:

V = (3.6 x 10⁷ V/m) × (2.2 x 10⁻³ m) = 7.92 x 10⁴ V

The voltage produced across the artery would be approximately 79,200 volts.

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(a) To get the pH of the media to 5.8, you would add NaOH solution. NaOH is used as a basic solution, and when it is added to a solution, it will increase the pH of the solution.

(b) The molecular weight of BA is 225.3. To prepare a 1M solution, you would have to weigh out 225.3 grams of BA.(c) To convert a 1M solution of BA to mg/mL, you can use the following equation: 1 mole = molecular weight in grams; 1000 millimoles = 1 mole. So, 1 M = 1000 mg/mL. Therefore, a 1M solution of BA is equivalent to 1000 mg/mL .(d) To convert a concentration of 1000 mg/mL .

Therefore, to calculate the weight required for a 5 mM solution, use the following formula :Mass of BA = molarity × volume × molecular weight= 5 × 0.001 × 225.3= 1.1265 grams(f) To convert a concentration of 5 mM to mg/mL, we use the following formula: Concentration (mg/mL) = (Concentration (mM) × Molecular weight) / 1000= (5 × 225.3) / 1000= 1.1265 mg/mL(g)

To convert a concentration of 1.1265 mg/mL to mg/L, we multiply by 1000, so 1.1265 mg/mL = 1126.5 mg/L.(h) Given that the stock solution of BA is 5 mM and the working solution is 0.2 mg/mL.

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A one-step process would require a higher energy input and may not be as economically viable. The two-step process for producing methanol from methane and water is used because it is more thermodynamically favorable.

The first step, which produces carbon monoxide and hydrogen gas, has a positive ΔH∘ of 214.7 J/K, meaning it requires energy input. However, the second step, which produces methanol from the carbon monoxide and hydrogen gas, has a negative ΔH∘ of -332.3 J/K, meaning it releases energy. By combining these two steps, the overall ΔH∘ for the reaction is negative and energy is released, making the process more efficient. A one-step process would require a higher energy input and may not be as economically viable.
Methanol (CH3OH) is produced from methane (CH4) and water (H2O) through a two-step process. In Step 1, methane and water react to form carbon monoxide (CO) and hydrogen gas (H2). This reaction has a standard enthalpy change (ΔH°) of 214.7 kJ and a standard entropy change (ΔS°) of -332.3 J/K at 298 K.

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Answer:true

Explanation:

i did the same question a minute ago :>

Answer:

wala ako alam sagot sorry

Answer:

Explanation:

acceleration no cap

Answer: approximately 74 milliliters (mL) of 1.42 M copper nitrate would be produced when copper metal reacts with 300 mL of 0.7 M silver nitrate.

Explanation: Cu + AgNO3 → Cu(NO3)2 + Ag

The balanced equation shows that 1 mole of copper reacts with 2 moles of silver nitrate to produce 1 mole of copper nitrate and 1 mole of silver.

Given:

Volume of silver nitrate solution (V1) = 300 mL

Molarity of silver nitrate solution (M1) = 0.7 M

Molarity of copper nitrate solution (M2) = 1.42 M

To find the number of moles of silver nitrate used, we can use the formula:

moles of silver nitrate (n1) = Molarity (M1) × Volume (V1)

= 0.7 mol/L × 0.3 L

= 0.21 moles

According to the balanced equation, 2 moles of silver nitrate react to produce 1 mole of copper nitrate. Therefore, the number of moles of copper nitrate (n2) produced is:

moles of copper nitrate (n2) = 0.21 moles ÷ 2

= 0.105 moles

Now, let's calculate the volume of the copper nitrate solution using the formula:

Volume (V2) = moles (n2) ÷ Molarity (M2)

= 0.105 moles ÷ 1.42 mol/L

≈ 0.074 L

≈ 74 mL

Ozonolysis, also known as ozonolysis-reduction, is the process of treating an alkene with ozone.

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Answer:

solid-gas temperature decrease

Answer:

2 g/mL

Explanation:

d = m/v

d= 8/4

d=2

hope that helps!

The negatively charged subatomic particles that J.J. Thomson discovered are now called electrons. Subatomic particles can be either neutral, positively charged, or negatively charged. Protons, for example, are positively charged subatomic particles. Electrons, on the other hand, are negatively charged subatomic particles

What are charged subatomic particles? Subatomic particles can be either neutral, positively charged, or negatively charged. Protons, for example, are positively charged subatomic particles. Electrons, on the other hand, are negatively charged subatomic particles. Neutrons are the third type of subatomic particle, but they are neutral, which means they do not have a charge. What did J.J. Thomson discover? J.J. Thomson was a British physicist who, in the late 19th century, conducted a series of experiments on cathode rays. Cathode rays are beams of electrons that are produced in a vacuum tube when an electric current is passed through it. Thomson used cathode rays to investigate the structure of atoms. In 1897, Thomson discovered that cathode rays are made up of negatively charged subatomic particles. He named these particles "corpuscles," but they are now known as electrons. Thomson's discovery of the electron revolutionized atomic physics and led to the development of the electron model of the atom. Electrons are important because they are responsible for chemical reactions and are involved in electricity and magnetism. They are negatively charged and are located outside the nucleus in the electron cloud. Electrons are also the smallest subatomic particle and have a mass of 9.10938356 x 10-31 kg (0.0005485799 atomic mass units).

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The partial pressure of N₂ is 3.75 atm, the partial pressure of O₂ is 2.50 atm, and the partial pressure of CO₂ is 1.25 atm in the given mixture at 25 °C and a total pressure of 10.0 atm.

To calculate the partial pressure of each gas in the mixture, we can use the concept of Dalton's law of partial pressures. According to this law, the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of each individual gas.

First, we need to find the mole fraction of each gas in the mixture. The mole fraction of a gas is the ratio of the number of moles of that gas to the total number of moles in the mixture. We can calculate the mole fraction using the following formula:

Mole fraction (X) = Moles of gas / Total moles of all gases

For N₂:

Mole fraction of N₂ (X_N₂) = 3.00 mol / (3.00 mol + 2.00 mol + 1.00 mol) = 0.375

For O₂:

Mole fraction of O₂ (X_O₂) = 2.00 mol / (3.00 mol + 2.00 mol + 1.00 mol) = 0.250

For CO₂:

Mole fraction of CO₂ (X_CO₂) = 1.00 mol / (3.00 mol + 2.00 mol + 1.00 mol) = 0.125

Next, we can use the mole fractions to calculate the partial pressures of each gas. The partial pressure of a gas is equal to the mole fraction of that gas multiplied by the total pressure of the mixture.

Partial pressure of N₂ (P_N₂) = X_N₂ * Total pressure = 0.375 * 10.0 atm = 3.75 atm

Partial pressure of O₂ (P_O₂) = X_O₂ * Total pressure = 0.250 * 10.0 atm = 2.50 atm

Partial pressure of CO₂ (P_CO₂) = X_CO₂ * Total pressure = 0.125 * 10.0 atm = 1.25 atm

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The life cycle of a star the size of our sun starts with a nebula, a huge cloud of dust and gas. The gravity of the nebula compresses the cloud until the atoms fuse together, creating a star. This stage is known as pre-birth.

Next, the star enters a main sequence phase, where it shines brightly for millions of years, powered by nuclear fusion.

Eventually the star will slowly run out of hydrogen and the fusion process will become less and less efficient. The star will expand and become what is known as a red giant. This marks the end of the main sequence phase.

After this point, the star expels its outer layers, leaving behind a small, hot core called a white dwarf. It will continue to cool down until it becomes a black dwarf.

If the star is at least 5 times bigger than our sun, it will enter a different life cycle. After the red giant phase, the star will undergo a supernova explosion, which will spew dust and gas into the surrounding areas. These remainders will later form new stars, planets, and other cosmic bodies. What's left of the star will become a neutron star or a black hole.

Answer:

Global wind

Explanation:

The jet streams go around the whole earth from west to east

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The respective electrons, valence electrons, and electron shells number of the structures in the above image are as follows:

A valence electron is any of the electrons in the outermost shell of an atom; capable of forming bonds with other atoms.

An electron is the subatomic particle having a negative charge and orbiting the nucleus; the flow of electrons in a conductor constitutes electricity.

The electron shell is the collective states of all electrons in an atom having the same principal quantum number (visualized as an orbit in which the electrons move).

Therefore, the respective electrons, valence electrons, and electron shells number of the structures in the above image are as follows:

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The correct answer is "Convexity has high value when investors expect that market yields will not change much." This statement is incorrect about the convexity term of a bond.

Convexity is the curvature of the price-yield relationship of a bond and a measure of how bond prices react to interest rate shifts.

Convexity is a term used in bond markets to describe the shape of a bond's yield curve as it changes in response to a shift in interest rates.

Bond traders use the convexity term to estimate the effect of interest rate changes on bond prices more precisely.

Bond traders use the term convexity to measure the rate of change of duration, which is a measure of a bond's interest rate sensitivity.

Convexity term and its features Convexity is always positive for a plain-vanilla bond.

We can improve the estimation of a price change with regard to a change in interest rates by accounting for the convexity of the bond.

Convexity is higher when market yields are unstable or when the bond has more extended maturity and lower coupon rates.

Thus, the correct statement about the convexity term of a bond is:

Convexity is higher when market yields are unstable or when the bond has more extended maturity and lower coupon rates.

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Answer:

Robert Boyle

Explanation:

En muchos textos se suele considerar a Robert Boyle como el científico que introdujo en la Química un concepto de elemento diferente al empleado por los aristotélicos o por los alquimistas y que sirvió de antecedente al que formulara Lavoisier en 1789.

Answer:

P2N5

Explanation:

you have to plus it 2 times

Answer:

\( \small \sf Answer \rightarrow Mercury \: is \: easier \: to \: warm. \)

Explanation:

Specific Heat:

The specific Heat of any material is the heat absorbed or evolved by the material to raise or fall it's temperature by 1°C per unit mass of the material.

The heat absorbed or evolved (Q) is directly proportional to the mass of substance(m) and rise or fall of temp(∆T)

The general formula for specific heat is,

\( \sf \: \: \: \: \: s = \frac{Q}{\Delta T} \)

Now coming to your question,

The specific heat of ethanol is 2.443 J/g °C

& specific heat of mercury is 0.14 J/g ° C

The definition states that, if the specific heat would be more, more amount of heat will be required for per unit change in temperature and the corresponding substance will be difficult to warm. Similarly, substance with high specific heat won't warm as fast as substance with less specific heat.

Hence mercury will be easier to warm up compared to ethanol, and this could a reason to why Mercury is the only metal liquid at room temperature, because it have less specific heat!

\( \small \sf Answer \rightarrow Mercury \: is \: easier \: to \: warm \: to \: a \: high \: temperature.\)

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The first two chemical equations are reversible while the other two are irreversible.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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