Calculate each of the following quantities:
(d) Number of sodium ions, perchlorate ions, chlorine atoms, and oxygen atoms in the mass of compound in part (c)
(c) Amount (mol) and number of formula units in 78.9 g of sodium perchlorate

Answer:

NiC2N2

Explanation:

the solute is dissolved in the solvent.

the solvent is able to dissolve other substances.

a solution is a special type of homogeneous mixture composed of two or more substances, meaning that its composition is identical in every sample.

hope i helped, good luck!

Answer:

V₂ = 0.4 L

Explanation:

Data:

Wanted:

Equation:

Solution:

Answer:

The correct answer is, D. growing in size

The reaction between carbon (graphite) and oxygen gas produces carbon dioxide. If 4.57 grams of carbon are mixed with an excess of oxygen, the reaction will yield 13.2 grams of carbon dioxide.

The balanced chemical equation for this reaction is:

C + \(O_{2}\) -> \(CO_{2}\)

To determine the amount of oxygen required for the reaction, we need to calculate the number of moles of carbon involved. We can do this by dividing the mass of the carbon by its molar mass:

4.57 g / 12.01 g/mol = 0.380 mol

Since the reaction requires a 1:1 stoichiometric ratio between carbon and oxygen, we need 0.380 mol of oxygen.

The amount of carbon dioxide produced can be calculated by multiplying the number of moles of carbon by the molecular weight of CO2:

0.380 mol × (44.01 g/mol) = 16.78 g

However, since only 13.2 grams of \(CO_{2}\) were actually produced, we can conclude that the reaction was limited by the amount of carbon and not by the amount of oxygen. This means that not all of the carbon was able to react with the oxygen and some was left over after the reaction.

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Answer:

Without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body

Explanation:

Answer:A

Explanation:

I just took the test

If equal masses of He and Ne are placed in a sealed container, the partial pressure of He in the container would be 3 atm, as the total pressure is 6 atm and the partial pressure of Ne would be 3 atm as well.

The partial pressure of a gas in a container is determined by the amount of the gas present in the container and its temperature. In a sealed container, the amount of gas present is fixed, so the pressure of each gas is determined solely by its temperature. In the case of equal amounts of He and Ne, the partial pressure of He would be equal to the partial pressure of Ne, resulting in a total pressure of 6 atm.

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Answer:

Between the two compounds, hexane and potassium sulphate, hexane is the more flammable compound.

Explanation:

Among hexane and potassium sulfate, hexane is more flammable.

Flammability may be defined as a type of physical property of an element or compound which determines the ability to support combustion. Due to this, it is also known as Combustibility.

This property defines the capability of any chemical element in order to ignite and continue it a very long time after coming or exposing it to direct contact with a flame or any source of ignition.

The characteristic of flammability relies on the volatility of the compound. This means that the higher the volatility of the compound greater or high the flammability.

So, when we compare hexane or potassium sulfate on the basis of volatility, hexane is more volatile and thus possesses high flammability.

Therefore, among hexane and potassium sulfate, hexane is more flammable.

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Answer:

Acero

Explanation:

Answer and Explanation

There are 2 significant figures.

The most likely to take place when a solid is placed in a liquid at room temperature ( i.e. 20°C ) is ; ( A )  A chemical reaction

Although your question lacks the required diagram a general answer is provided within the scope of your question

When a solid at 20°C is placed inside a liquid also at 20°C  in the laboratory the emergence of gas bubbles shows that there has been a chemical change between the solid and liquid reactant ( i.e. a chemical reaction has taken place ).

Hence we can conclude that what is most likely to have taken place in this situation is a Chemical reaction.

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Answer:

high ph -basic,low pH -acidic

Explanation:

hi I'm from India nice to meet you

Water is h2O, a clear, colorless, odorless, tasteless liquid that freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade.

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The difference between a solution and a suspension is in the particle sizes involved. A solution is a mixture of ions or molecules (very, very small). Solutions are transparent, meaning that you can see through them. A suspension has bigger particle sizes and so it may look cloudy or murky

Answer:oml felt

Explanation:

I'm sorry tho

Answer:

800-273-8255

Explanation:

here is the sui cide hotline number

Answer:

11 protons

Explanation:

Sodium (Na)'s atomic number or proton number is 11, which means it contains 11 protons

To impose pressure equivalent to that of a 760.0 mm column of mercury, a column of water must be 10336mm tall, or 10.3m. Per unit area, pressure is the force exerted perpendicularly to an object's surface.

That force is dispersed across. The gauge pressure, also known as gauge pressure, is the pressure in relation to the surrounding air pressure. To express pressure, a variety of units are employed. Mercury is the smallest and sun-closest planet in the solar system. The quickest of all the planets that orbit the Sun, its orbit lasts 87.97 Earth days.

76*13.6*g = h*1*g

h = 76*13.6 = 10.3m

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Explanation:

byju's ig. Cause it gives a proper concept

The statement you provided refers to the determination of the van't Hoff factor (i) for strong electrolytes. The van't Hoff factor represents the number of ions produced per mole of solute dissolved in a solution.

For example, when calcium chloride (CaCl2) dissolves, it dissociates into three ions: one Ca2+ ion and two Cl- ions. Therefore, the van't Hoff factor (i) for CaCl2 is 3 because it produces three ions per mole of solute dissolved.

Similarly, when ammonium phosphate (NH4)3PO4 dissolves, it dissociates into four ions: three NH4+ ions and one PO43- ion. Thus, the van't Hoff factor (i) for (NH4)3PO4 is 4 because it yields four ions per mole of solute dissolved.

The van't Hoff factor is essential in various calculations related to colligative properties, such as boiling point elevation and freezing point depression, where it is used to account for the number of particles in solution.

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Answer:

Explanation: The pyramid model of four level in an organization is based on and is depends on the various levels of the hierarchy systems or management in the organization. These four level is of different types of the Information System in the organization.

Explanation:

Ozone formed as a result of the combination of NOx and VOCs in the presence of sunlight is considered a secondary pollutant and is associated with the formation of photochemical smog.

Ozone formed in the atmosphere as a result of the combination of nitrogen oxides (NOx) and volatile organic compounds (VOCs) in the presence of sunlight is classified as a secondary pollutant. Secondary pollutants are not emitted directly into the atmosphere, but rather formed through chemical reactions involving primary pollutants and other atmospheric components. In this case, NOx and VOCs act as primary pollutants, which are emitted directly from various sources such as vehicles, industrial processes, and fossil fuel combustion.

When NOx and VOCs are released into the atmosphere, they undergo photochemical reactions facilitated by sunlight. These reactions lead to the formation of ozone as a secondary pollutant. Ozone is a highly reactive gas that can have detrimental effects on human health and the environment. It can cause respiratory issues, irritate the eyes, and contribute to the formation of smog.

The process of ozone formation in the presence of sunlight is also associated with the formation of photochemical smog, a type of air pollution. Photochemical smog consists of a mixture of pollutants, including ozone, nitrogen dioxide (NO2), and other secondary pollutants. It is characterized by a brownish haze and is often observed in urban areas with high levels of vehicle emissions and industrial activities.

In conclusion, ozone formed as a result of the combination of NOx and VOCs in the presence of sunlight is considered a secondary pollutant and is associated with the formation of photochemical smog. This process highlights the importance of reducing emissions of NOx and VOCs to mitigate the formation of ozone and minimize the negative impacts on human health and the environment.

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The slope of the curves at equilibrium can be used to show that the rates of the forward and reverse reactions are the same at equilibrium because the slope of the curves is equal in magnitude but opposite in sign.

Equilibrium is a state of balance in which all forces operating on a system are equal and opposite. It is a state of dynamic balance between opposing forces, with no tendency to move toward a particular direction. It is a state of rest or balance due to the equal action of opposing forces. In economics, equilibrium refers to a situation in which the market price is stable, with no tendency to change due to the forces of supply and demand.

This indicates that the rates of the forward and reverse reactions are equal and that the system is at equilibrium.
At constant temperature, the pressure inside the container remains the same because the reaction occurs at equilibrium and therefore, the rate of the forward reaction is equal to the rate of the reverse reaction. As a result, the pressure inside the container does not change as the reaction occurs.

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Answer:

Approximately \(1.10\; {\rm V}\) under standard conditions.

Explanation:

Equation for the overall reaction:

\({\rm CuCl_{2}}\, (aq) + {\rm Zn}\, (s) \to {\rm ZnCl_{2}} \, (aq) + {\rm Cu}\, (s)\).

Write down the ionic equation for this reaction:

\(\begin{aligned}& {\rm Cu^{2+}}\, (aq) + 2\; {\rm Cl^{-}}\, (aq) + {\rm Zn}\, (s)\\ & \to {\rm Zn^{2+}} \, (aq) + 2\; {\rm Cl^{-}}\, (aq) + {\rm Cu}\, (s)\end{aligned}\).

The net ionic equation for this reaction would be:

\({\rm Cu^{2+}}\, (aq) + {\rm Zn}\, (s) \to {\rm Zn^{2+}}\, (aq) + {\rm Cu}\, (s)\).

In this reaction:

Look up the standard potentials for each half-reaction on a table of standard reduction potentials.

Notice that \({\rm Zn}\, (s) \to {\rm Zn^{2+}}\, (aq) + 2\, {\rm e^{-}}\) is oxidation and is likely not on the table of standard reduction potentials. However, the reverse reaction, \({\rm Zn^{2+}}\, (aq) + 2\, {\rm e^{-}} \to {\rm Zn}\, (s)\), is reduction and is likely on the table.

The reduction potential of \({\rm Zn}\, (s) \to {\rm Zn^{2+}}\, (aq) + 2\, {\rm e^{-}}\) would be \(-E(\text{anode}) = -(-0.7618\; {\rm V}) = 0.7618\; {\rm V}\), the opposite of the reverse reaction \({\rm Zn^{2+}}\, (aq) + 2\, {\rm e^{-}} \to {\rm Zn}\, (s)\).

The standard potential of the overall reaction would be the sum of the standard potentials of the two half-reactions:

\(\begin{aligned} E^{\circ} &= E^{\circ}(\text{cathode}) + (-E^{\circ}(\text{anode})) \\ &= 0.3419 - (-0.7618\; {\rm V}) \\ &\approx 1.10\; {\rm V}\end{aligned}\).

The balanced overall reaction for the given reaction in base, written in its simplest form, is  2Ag(s) + Zn(OH)₂(aq) + H₂O → Ag₂O(aq) + Zn(s) + 2OH⁻(aq)

This reaction involves the oxidation of zinc (Zn) and the reduction of silver (Ag). Zinc is oxidized from its ionic form, Zn²⁺, to elemental zinc (Zn), while silver ions (Ag⁺) are reduced to form silver oxide (Ag₂O). The hydroxide ions (OH⁻) act as a base, and water (H₂O) is involved in the reaction as well. The balanced equation shows that two moles of silver (Ag) react with one mole of zinc hydroxide (Zn(OH)₂), producing one mole of silver oxide (Ag₂O), one mole of zinc (Zn), and two moles of hydroxide ions (OH⁻).

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Answer:

They can use man made materials or they can also have designed areas that people can’t go into

Explanation: