chemical compound banned in most countries because of link to stratospheric ozone depletion is called

Answer:

Explanation:

Most molecular compounds that have a mass similar to water are gases at room temperature. Because of the strong hydrogen bonds, water molecules are able to stay condensed in the liquid state, but, because of the hydrogen bonds, as water molecules come together they stick to one another for a small, but significant amount of time. Molecular water, therefore, is a liquid at room temperature

In Science, went to atom slam together to form a heavier atom this phenomena is called fusion.

Went two atoms slam together to form a heavier item this process is called nuclear fusion in science.

When they are to unstable atoms they combine with each other in order to form a stable atom that is much more heavier.

In the process of recombination energy is released by the items which can be given by the mass energy equivalence,

E = ∆mc²

Where,

∆m is the change in mass during the recombination and c is the speed of light.

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The percent by mass of sodium sulfate in a solution of 32.0 g of sodium sulfate dissolved in enough water to make 94.0 g of solution is 34.0%.

The percent by mass of sodium sulfate in the solution can be calculated by dividing the mass of sodium sulfate by the mass of the solution and multiplying by 100.

Mass of sodium sulfate = 32.0 g
Mass of solution = 94.0 g

Percent by mass = (Mass of sodium sulfate / Mass of solution) * 100
               = (32.0 g / 94.0 g) * 100
               = 34.0%
The percent by mass of sodium sulfate in the solution is 34.0%.

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The balanced chemical equation for the reaction between zinc (Zn) and hydrochloric acid (HCl) is:

Zn + 2HCl → ZnCl₂ + H₂From the equation, we can see that one mole of zinc reacts with two moles of hydrochloric acid. Therefore, the number of moles of HCl in 50 cm³ of 2.0 mol/dm³ hydrochloric acid can be calculated as follows:n(HCl) = c × V = 2.0 mol/dm³ × 50 cm³ ÷ 1000 cm³/dm³ = 0.1 molThis means that 0.1 mol of zinc will react with the 50 cm³ of 2.0 mol/dm³ hydrochlmolaroric acid.The   of zinc is 65.38 g/mol. Therefore, the mass of zinc that will react with 0.1 mol of hydrochloric acid is:m(Zn) = n(Zn) × M(Zn) = 0.1 mol × 65.38 g/mol = 6.54 gTherefore, the maximum mass of zinc that will react with 50 cm³ of 2.0 mol/dm³ hydrochloric acid is 6.54 g.This mmasseans that 0.1 mol of zinc will react with the 50 cm³ of 2.0 mol/dm³ hydrochloric acid.The molar mass of zinc is 65.38 g/mol. Therefore, the mass of zinc that will react with 0.1 mol of hydrochloric acid is:m(Zn) = n(Zn) × M(Zn) = 0.1 mol × 65.38 g/mol = 6.54 gTherefore, the maximum mass of zinc that will react with 50 cm³ of 2.0 mol/dm³ hydrochloric acid is 6.54 g.



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Answer:

It is b

Explanation:

After 3.96 seconds, 0.549 mol/l of the compound is left. The rate constant of a reaction indicates how quickly reactants are being converted into products.

In this case, a rate constant of 0.0735 sec-1 means that 0.0735 moles of the compound react per second. To determine how much of the compound is left after 3.96 seconds, we can use the following equation:

ln([A]/[A]₀) = -kt

Where [A] is the concentration of the compound at time t, [A]₀ is the initial concentration (0.969 mol/l), k is the rate constant (0.0735 sec-1), and t is time (3.96 seconds).

Solving for [A], we get:

[A] = [A]₀ e^(-kt)

Plugging in the values, we get:

[A] = 0.969 mol/l e^(-0.0735 sec-1 * 3.96 sec)

[A] = 0.549 mol/l

Therefore, after 3.96 seconds, 0.549 mol/l of the compound is left.

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The outer electron configuration of a main-group element is ns^2 np^4. Therefore, the most likely charge for an ion of this element would be -2.

Explanation

When determining the valence electrons in an atom, outer electron configuration comes into play. Valence electrons are the electrons located in the outermost shell. As a result, it's the most likely to be involved in chemical bonding, which is a crucial aspect of chemistry.

In this case, the main-group element has an outer electron configuration of ns²np⁴. Therefore, its valence electron is six (6).

The six (6) valence electrons suggest that the element belongs to the 16th group (also known as Group VI A) of the periodic table. Elements in this group include oxygen (O), sulfur (S), selenium (Se), and tellurium (Te), among others.

When these elements form ions, they tend to gain two additional electrons to achieve a stable noble gas electron configuration. This is because the elements in Group 16 have six valence electrons, and by gaining two electrons, they complete their outermost energy level, which resembles the electron configuration of the noble gas in the previous period.

Therefore, the most likely charge for an ion of this element would be -2. By gaining two electrons, the element's electron configuration would become ns^2 np^6, which matches the electron configuration of the noble gas that precedes it in the periodic table.

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Answer:

The force required to cause a 6-kg bowling ball to accelerate at 4 m/s^2 can be calculated using Newton's Second Law of Motion, which states that force is equal to mass times acceleration.

So, we can use the formula:

Force = Mass × Acceleration

Here, Mass (m) = 6 kg and Acceleration (a) = 4 m/s^2

So, Force (F) = m × a

= 6 kg × 4 m/s^2

= 24 N

Therefore, a force of 24 Newtons is required to cause a 6-kg bowling ball to accelerate at 4 m/s^2.

Answer: Science and Mathematics- Anthropologist, Meteorologist

Engineering and technology- Fuel Cell Technician, Computer programmer, electrical Drafter, Civil Drafter

Answer:

i have the same question  

Explanation:math and science is the meteorologs and the  anthropologist

Explanation:

I know only one.You are in form.....

Answer:

6.48 moles

Explanation:

One mole of a substance is equal to 6.022*10^23 particles which is called Avagadro's number.

6.022*10^23 = 1 mole

3.90*10^24 = x moles

x = (3.90*10^24*1) / (6.022*10^23) = 6.48 moles

A battery is a device that converts chemical energy into electrical energy through a process known as an electrochemical reaction.

When a battery is connected to a circuit, the electrochemical reaction causes a flow of electrons from the anode to the cathode, generating an electric current that can power a device.

The metal chosen for the anode must be capable of losing electrons easily, while the metal chosen for the cathode must be capable of accepting electrons. The choice of metals can also affect the voltage and capacity of the battery, as well as its overall efficiency.

In general, the metals used in a battery should have a large difference in their electronegativity values, which determines how easily an atom can attract electrons. Common metals used in batteries include zinc, lithium, nickel, and cadmium.

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Answer:

limiting reactant

Explanation:

it is consumed totally

Answer: 57 neutrons

Explanation: Ruthenium has an atomic number of 44, meaning it has 44 electrons, 44 protons, and 57 neutrons.

Answer:

57 neutrons

Explanation:

Ruthenium has atomic number of 44, that is, it contains 44 electrons distributed in atomic orbitals and its nucleus has 44 protons and 57 neutrons (Figure 1). Electron distribution in atomic or molecular orbitals is called electron configuration which for Ru and the other group 8 chemical elements is shown in Table 1.

Answer: 90 degrees.

Explanation:

0.08 gram mass of magnesium oxide will be formed.

Mass is an intrinsic property in the mass of a body. It was the  traditionally believed to the  be related to the quantity of matters in the  physical body, until it is  discovery of the atom and  particle in physics.

Mass is quantitative measure of inertia a fundamental quantity of all matters.

2Mg + O 2→2MgO

Molar mass of Mg =24 g

Molar mass of MgO =40 g

No. of moles of O2=6.022×10^20/6.022×10^23

=0.001 mole of O2

No. of moles of Mg=0.486/24

=0.02 moles  of Mg

As moles of O 2

​ are less than 0.01, O 2

 is limiting reagent and it is  0.002 moles of MgO is formed.

⇒0.002×40=0.08 g of MgO

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According  to stoichiometry and concept of Avogadro's number there are 3.61×10²⁴ particles for 4 moles of KClO₃.

As 2 moles of potassium chlorate gives 3 moles of oxygen , thus 4 moles of potassium chlorate will give 4×3/2=6 moles , 6 moles have 6×6.023×10²³=3.61×10²⁴ particles.

Thus,  there are 3.61×10²⁴ particles for 4 moles of KClO₃.

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The value of K_eq for this reaction is approximately 1.805 × 10^-5.

To find the value of the equilibrium constant (K_eq) for the given reaction, we can use the equilibrium concentrations of the species involved. The equilibrium constant expression for the reaction is:

K_eq = [CH3COO-][H3O+] / [CH3COOH]

Given the following concentrations at equilibrium:

[CH3COOH] = 2.0 × 10^-1 M

[CH3COO-] = 1.9 × 10^-3 M

[H3O+] = 1.9 × 10^-3 M

Substituting these values into the equilibrium constant expression, we get:

K_eq = (1.9 × 10^-3)(1.9 × 10^-3) / (2.0 × 10^-1)

K_eq = 3.61 × 10^-6 / 2.0 × 10^-1

K_eq = 3.61 × 10^-6 × 5.0 × 10^0

K_eq = 1.805 × 10^-5

Therefore, the value of K_eq for this reaction is approximately 1.805 × 10^-5.

None of the provided answer choices match this value exactly.

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1.42x10^24 molecules

40.0 grams NH3 (6.02x10^23/17.0 grams NH3)= 1.42x10^24 molecules

Answer:

Tara does not think that Victor’s predictions are likely.

Explanation:

In order to submit the paper, he would need to be as accurate as he possible can, is Tara told him to do it again, it means that he may have made a few mistakes.

Answer:

(the numbers are suppose small on the bottom right of the letter)

1. H2SO4 + K

2. H2SO4 + Mg

3. HCL + Na

Answer:

e< d< b< c=f< a

Explanation:

Quantum numbers refers to values that exactly describe the energy of electrons within an atom or a molecule. Electrons are known to possess a set of four quantum numbers used in describing the energy state of such electron. These quantum numbers are solutions to the Schrödinger wave equation for the hydrogen atom.

In describing any electron within the atom, the relevant set of four quantum numbers are: principal quantum number (n), orbital, azimuthal, subsidiary or angular momentum quantum number (l), magnetic quantum number (ml), and spin quantum number (ms).

In the arrangement above, the electrons are arranged in order of increasing energy. Each arrangement of quantum numbers corresponds to a particular energy state of the electron.

Answer:

a. The limiting reagent is NO2.

b. 126g of nitric acid can be produced.

Explanation:

1st) It is necessary to write the balanced equation:

From the balanced equation we know that 3 moles of NO2 (3x46g= 138g) react with 1 mol of water (18g/mol) to produce 2 moles of nitric acid (2x63g= 126g) and 1 mol of NO (30g/mol).

2nd) To calculate the limiting reagent it is necessary to use the given values and the stoichiometry of the balanced equation:

The 10.0g of NO2 will need 1.30g of H2O to react.

The 30.0g of H2O will need 230g of NO2 to react.

So, as we only have 10.0g of NO2 and 30.0g of H2O, the limiting reagent will be NO2.

3rd) Now, to calculate the theorical yield, we need to use the stoichiometry of the balanced equation using the limiting reagent:

1 mol of H2O produces 2 moles of nitric acid. With the molar mass of nitric acid (63g/mol), we can calculate the grams.

Finally, 126g of nitric acid will be produced if the reaction is 100% efficient (theoretical yield).

Answer:

where two plates meet and ring of fire

Answer:

1. Volcanoes and earthquakes often occur where two plates meet.

Explanation:

2. Earthquakes and volcanoes are frequent along The Ring of Fire

Gold is found in various ionic compounds, but one of the most well-known and commercially significant compounds is gold chloride, also known as auric chloride or gold(III) chloride.

The chemical formula for gold chloride is AuCl₃. Gold chloride is an ionic compound composed of gold cations (Au³⁺) and chloride anions (Cl-). It is a yellow-orange solid that is highly soluble in water. Gold chloride can be formed by reacting the gold metal with chlorine gas or by dissolving the gold metal in aqua regia, which is a mixture of concentrated nitric acid and hydrochloric acid.

Gold chloride has several uses and applications. It is commonly used in the field of nanotechnology for the synthesis of gold nanoparticles. These nanoparticles have unique optical, electronic, and catalytic properties, making them valuable in various fields such as medicine, electronics, and materials science.

In addition to gold chloride, gold can also form other ionic compounds with different anions, such as gold bromide (AuBr), gold iodide (AuI), gold sulfide (Au2S), and gold cyanide (AuCN). These compounds have their own unique properties and applications.

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1. White Women was not excluded from the original construction of the American political system. The correct option is (A) White Women.

Among the groups that were not excluded from the original construction of the American political system were white women, wealthy land-owning white males, and, to some extent, formerly enslaved blacks. Native Americans, on the other hand, were excluded and treated as second-class citizens.

2. Libertarianism emphasizes the idea that the government should take a "hands-off" approach in most if not all matters of economic prosperity. The correct option is (C) Libertarianism. Libertarianism is a political ideology that emphasizes the importance of individual freedom, limited government intervention, and free-market capitalism. It is an ideology that is diametrically opposed to socialism and believes that the government should not interfere in people's lives unless it is absolutely necessary.

3. The Iroquois Confederacy played a role in the development of the U.S. Constitution and the American Political System. The correct option is (B) The Iroquois Confederacy. The Iroquois Confederacy, a native North American tribe, was known for its confederate government system, which inspired the U.S. Constitution's framers.

The idea of a representative government, checks and balances, and the division of powers were all influenced by the Iroquois Confederacy.

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The oxidation potential of the halogens increases in the order I<Br<Cl<F, which means that if you have a solution of iodide ions and add bromine, the iodide will be oxidized to iodine, and the bromines reduced to bromides:

2 I(-) + Br2 → 2 Br(-) + I2

In the same way, two Br(-) will lose their electronsto a chlorine molecule, and the chlorides formed are going to lose their electrons if confronted with a fluorine molecule. This means that the opposite to the above reaction, i. e.

I2 + 2 Br(-) → no reaction

the brown-purple color of the iodine solution, when mixed with a colorless solution of bromide ions (from sodium bromide) will remain purple-brown, perhaps paler because of the dilution (a physical effect) which comes from mixing of two solutions but not because of any chemical reaction.

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Answer:

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