What is the percent (% w/v) concentration of a solution containing 250 mEq of silver chloride per liter?AgCl2 MW =143

A methylene chloride solution of a substance that dissolves to produce color is contained in a separatory funnel.

The ingredients of a mixture can be separated into two immiscible solvent phases of differing densities using a separatory funnel, sometimes referred to as a separation funnel, separating funnel, or simply  separatory funnel.

In contrast to the organic phase, which includes neutral chemicals, the aqueous part includes water as well as other charged species, and ions.

The less-dense solution would rest on top, while the heavier dense one will rest at the bottom. Due to their low density of less than 1 g/mL, the majority of the non-halogenated organic solvents would float on top of an aqueous solution.

Ether is usually on top of water when utilizing ether as well as water as the extraction solvents since it is less dense.

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Answer:

Explanation:

from the way the trees look, i would say A: Wind from the sky, it seems B: Clouds and in the distance C:Precipitation(rain)

1. B, the energy associated with the motion of an object

2. C, 12.4 g/mL

3. C, 5

1) B) Kinetic energy is energy associated with the motion of an object.

2) B) Density equals mass divided by volume: 1.38 g/mL

3) C) There are 5 significant figures in 20.300

4) A) 80 is the atomic number for mercury on the periodic table.

5) E) The formula for copper (II) sulfate pentahydrate is CuSO4•5H2O

So in summary:

• Kinetic energy is the energy of a moving object due to its motion.

• Density is calculated by dividing an object's mass by its volume.

• Significant figures refer to the known precision of a measurement based on the digits reported.

• Atomic symbols represent elements on the periodic table.

• Chemical formulas use symbols of the elements to show the proportions of atoms in a compound.

D) 2.05 g N. The molar mass of N2H4 is 32.045 g/mol. To calculate the mass of N in 2.34 g of N2H4, we need to first calculate the number of moles of N2H4:

moles of N2H4 = (mass of N2H4) / (molar mass of N2H4)
moles of N2H4 = 2.34 g / 32.045 g/mol
moles of N2H4 = 0.073 mol

Since there are two N atoms in one N2H4 molecule, we need to multiply the number of moles of N2H4 by 2 to get the number of moles of N:

moles of N = 2 x moles of N2H4
moles of N = 2 x 0.073 mol
moles of N = 0.146 mol

Finally, we can calculate the mass of N:

mass of N = (moles of N) x (molar mass of N)
mass of N = 0.146 mol x 14.007 g/mol
mass of N = 2.05 g

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A chemical change occurs when there is a bond breaking or bond making. A phase change, change in phase and or change in shape does not make a chemical change. A chemical change can be indicated by the heat given off by a reaction or change. Thus, option a is correct.

There are broadly two types of change occurs for a substance namely chemical change or physical change. A physical change is a change in state or phase involves no formation products or breaking of bonds. For example melting of a solid to liquid and boiling of liquid to gas etc.

In a chemical change there makes a bond breaking or making to form a new product. All chemical reactions such as combination reactions, decomposition, displacements etc. are chemical changes.

Every chemical change is associated with an enthalpy of heat energy that is absorbed or released by the system. Thus heat given off is an indication of a chemical change. Hence, option A is correct.

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Answer:

m = 37.5 g

Explanation:

Hi there !

d = m/V

m = d×V

m = 2.5g/ml×15ml

m = 37.5 g

Good luck !

Answer:

alpha particles

Explanation:

alpha particles the least penetrating but potentially most damaging and gamma rays the most penetrating. A beta particle, also called beta ray or beta radiation, is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus during the process of beta decay.

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280.53 L is the final volume in liters.

Applying the ideal gas equation for O₂

    PV = nRT  

where P is pressure, V is volume, n is the number of moles of gas, R is gas constant and T is temperature

As n and T are not changing

So,  

    P₁V₁ = P₂V₂  ⇒equation 1

now from the question we have,

Given data;

    P₁ = 20.8 atm, P₂= 2.70 atm

    V₁ = 26.3 L

now we have to find the volume of a gas when pressure is changed.

V₂ = ?  

Put values in equation 1

    20.8 × 26.3 = 2.70 × ?

     V₂ = 20.8 × 26.3 / 2.70

     V₂ = 280.53 L  

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The answer is (e) Al2(SO4)3.

The boiling point of the solution increases as the concentration of the solute increases.

The solute that would have the greatest increase in the boiling point of water is the one that dissociates into the greatest number of particles. Therefore, the correct option is (D)

NaCl, which is a strong electrolyte and dissociates into two ions: Na+ and Cl-. Boiling point is the temperature at which the vapor pressure of a liquid is equivalent to the pressure exerted on the liquid by the surrounding atmosphere, resulting in the formation of vapor. When a non-volatile solute is dissolved in a solvent, the solvent's vapor pressure decreases, lowering its boiling point.

Therefore, the boiling point of a solution is higher than that of the pure solvent, and the degree of elevation is determined by the number of solute particles present in the solution. More solute particles imply a greater elevation of the boiling point.

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The second thesis statement is perfect. It supports the claim and presents main idea.

Answer:

oxygen atoms

hope this helps:)

According to the graph, only the reactant A was present at the beginning of the reaction.

The graph shows the concentration for the reactant A and the product that is A2. In this graph, the concentration is displayed on the vertical axis, while the horizontal axis shows the time.

In general terms, it can be observed that at the beginning only the reactant A is present, but as the reaction occurs the concentration of this reactant decreases, while the concentration of the product A2 increases.

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If the experiment is repeated at the pH 11 level, the enzyme activity will be less than at the pH 9 level.

We can arrive at this answer because:

In this case, we can say that if the experiment is repeated at pH 11, the enzyme activity level will be even lower, since from pH 5 onwards, as the pH rises, the enzyme activity goes down.

The question above is incomplete, however, you can see a full version of it in the image below.

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Answer:

No

Explanation:

Fortunately, in this scenario, you are not out of luck. Each of these components has a unique trait that would allow you to easily separate them. For starters, you can separate all of the Iron with a strong magnet since iron has a magnetic field while sand and salt do not. Next, you can separate the salt and sand by adding water since salt will dissolve in the water leaving only the sand which is not soluble. Once the sand is removed you would simply need to distill the water/salt mixture which would separate the salt from the water. Now you have all three components separated and can get your wish.

Answer:

One

Explanation:

In a hydrogen atom, the first outer shell only consists of two valence electrons, because it would already have one, the atom only needs one more.

It requires two electrons to completely occupy its outer shell, it frequently forms a single covalent bond with another atom. Because of this configuration, hydrogen can gain access to two electrons and completely occupy its valence shell.

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Answer:

C

Explanation:

5 moles of oxygen are needed to produce 1 mols of P4O10

x moles of oxygen are needed to produce 2 mols of P4O10

5/x = 1/2             Cross multiply

1*x = 2 * 5           Combine

x = 10

C

Answer:

Refer to the attachment

Answer:

A

Explanation:

Ur welcome hope it helps :)

Answer:

A.

Explanation:

All the rest is Chemical Change

This is due to Avogadro's law, which states that equal volumes of gases at the same temperature and pressure contain an equal number of molecules.

This relationship holds true because equal volumes of gases contain an equal number of molecules when other conditions are constant.

According to Avogadro's law, which states that equal volumes of gases at the same temperature and pressure contain an equal number of molecules,

we can determine the relationship between the number of molecules and the volume of hydrogen and oxygen gases.

The equation V / n = k represents Avogadro's law, where V is the volume, n is the number of moles, and k is a constant.

Since both hydrogen (H₂) and oxygen (O₂) gases are at the same temperature and pressure, their volumes will be directly proportional to the number of molecules present.

Therefore, the ratio of the number of molecules of hydrogen gas (2 liters) to the number of molecules of oxygen gas (2 liters) will be equal to the ratio of the volumes occupied by these gases.

Since the volumes are equal, the number of molecules of hydrogen gas will indeed be twice the number of molecules of oxygen gas.

In summary, based on Avogadro's law, the number of molecules in 2 liters of hydrogen gas will be twice the number of molecules in 2 liters of oxygen gas, given that they are at the same temperature and pressure.

This relationship holds true because equal volumes of gases contain an equal number of molecules when other conditions are constant.

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Schottky defect consists of an anion vacancy and a cation vacancy occurring simultaneously.

Schottky defect is a specific type of crystal lattice defect that occurs in ionic compounds.

It involves the creation of paired vacancies, where both a cation and an anion are missing from their respective lattice sites. Therefore, a Schottky defect consists of an anion vacancy and a cation vacancy occurring simultaneously.

In an ionic compound, such as a metal oxide or a metal halide, the presence of a Schottky defect leads to the formation of a neutral defect pair.

The removal of both an anion and a cation disrupts the charge balance within the crystal lattice, but the overall charge of the crystal remains unchanged.

Schottky defects can significantly affect the physical and chemical properties of ionic compounds.

They contribute to the ionic conductivity of materials and can influence factors such as the electrical and thermal conductivity, as well as the mechanical and optical properties.

The formation of Schottky defects is influenced by factors such as temperature, pressure, and the stoichiometry of the compound.

It's important to note that while a Schottky defect involves vacancies, it is different from anion interstitials or cation substitutions.

An anion interstitial occurs when an additional anion occupies an interstitial position within the crystal lattice, whereas a cation substitution involves the replacement of one cation by another of a different type or valency.

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Answer:

People may seem and act normally during the fugue, or they may appear moderately bewildered and draw no notice. When the fugue is over, however, people are thrown into a new scenario with no recall of how they got there or what they were doing.

Explanation:

Answer:

electrons are fermions, they can only access an energy level if it has not already been occupied by another electron. Thanks to this principle, there is a minimum energy level within the atom and it is not possible for an electron to collapse to the nucleus because it cannot exceed this} threshold.

Explanation:

I hope I have helped you.

The atomic ratio of carbon to oxygen in carbon monoxide (CO) is 1:1, and the atomic ratio of carbon to oxygen in carbon dioxide (CO₂) is 2:1.

Firstly, we can analyze the decomposition of carbon monoxide (CO) and carbon dioxide (CO₂) to determine the atomic ratios involved.

Let's denote the atomic ratio of carbon to oxygen in carbon monoxide as x, and the atomic ratio of carbon to oxygen in carbon dioxide as y.

According to the given data;

Decomposition of carbon monoxide (CO);

Oxygen produced = 3.36 g

Carbon produced = 2.52 g

We know that the atomic mass of carbon is 12 g/mol, and the atomic mass of oxygen is 16 g/mol. Using these values, we can calculate the number of moles for each element;

Number of moles of oxygen = mass / atomic mass = 3.36 g / 16 g/mol = 0.21 mol

Number of moles of carbon = mass / atomic mass = 2.52 g / 12 g/mol = 0.21 mol

Since the atomic ratio of carbon to oxygen in carbon monoxide is x, we can write the following equation;

0.21 mol C / (0.21 mol O) = x

Simplifying the equation, we have;

x = 1

Therefore, the atomic ratio of carbon to oxygen in carbon monoxide is 1:1.

Decomposition of carbon dioxide (CO₂);

Oxygen produced = 9.92 g

Carbon produced = 3.72 g

Following the same calculations as before;

Number of moles of oxygen = mass / atomic mass = 9.92 g / 16 g/mol = 0.62 mol

Number of moles of carbon = mass / atomic mass = 3.72 g / 12 g/mol = 0.31 mol

Since the atomic ratio of carbon to oxygen in carbon dioxide is y, we can write the following equation;

0.31 mol C / (0.62 mol O) = y

Simplifying the equation, we have;

y = 0.5

Therefore, the atomic ratio of carbon to oxygen in carbon dioxide is 1:0.5, which can be simplified to 2:1.

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--The given question is incomplete, the complete question is

"Missed this? watch kcv: atomic theory; read section 2.3. you can click on the review link to access the section in your text. carbon and oxygen form both carbon monoxide and carbon dioxide. when samples of these are decomposed, the carbon monoxide produces 3.36 g of oxygen and 2.52 g of carbon, while the carbon dioxide produces 9.92 g of oxygen and 3.72 g of carbon. Calculate the atomic ratio of carbon to oxygen in carbon monoxide, and carbon dioxide."--

Answer:

Truck crashes into a car