How much heat is released during the formation of 3.18 mol hcl(g) in this reaction: h2(g) cl2(g) → 2hcl(g) with a ∆hof -184.6 kj. express your answer in kj.

To convert pressure from atm (atmospheres) to mmHg (millimeters of mercury), you need to use the conversion factor of 1 atm = 760 mmHg. This conversion factor is based on the standard atmospheric pressure at sea level.

To convert 0.950 atm to its equivalent in mmHg, you can multiply the given value by the conversion factor:

0.950 atm * 760 mmHg/atm = 722 mmHg

Therefore, 0.950 atm of pressure is equivalent to 722 mmHg.

This conversion is commonly used in various scientific and technical fields to express pressure in different units. The unit mmHg, also known as torr, represents the pressure exerted by a column of mercury that is 1 millimeter in height. It is a widely used unit for measuring pressure in laboratory experiments and medical applications. Understanding and converting between different pressure units is important for accurate measurements and comparisons. By using conversion factors like the one mentioned above, you can easily convert pressure values from one unit to another, allowing for consistency and compatibility in scientific calculations and measurements.

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v

Hazardous waste is any discarded material that poses a potential risk to health or the environment.

Examples of hazardous waste include chemical waste from factories, medical waste from hospitals, and oil from vehicles.

Chemical waste from factories can be a serious risk to the environment, as it can contain a variety of toxins and pollutants.

This can include heavy metals such as lead, mercury, and cadmium, as well as solvents, acids, and other compounds. In addition, medical waste can include hazardous materials such as medical syringes, bandages, and other biohazardous materials.

Finally, oil from vehicles can also be hazardous waste, as it can contain petroleum products and other contaminants.

It is important to properly dispose of hazardous waste, as it can cause serious health and environmental hazards if it is released into the environment. By properly disposing of hazardous waste, we can help ensure the health of both humans and the environment.

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The statement which have correct evidence supporting above is that electrical energy can be changed or converted into other form of energy.

Therefore, Option A is the correct option.

Electrical energy is defined as the energy which is derived from electric kinetic energy or potential energy of the charged particles.

In general, it is referred as the amount of energy which has been changed from electric potential energy. We can also define electrical energy as the energy which is generated by the movement of electrons from one position to another position. The movement of charged particles or electron through/along a medium which constitute current or electricity.

The SI unit of Electrical Energy is watt-second.

The commercial unit of Electrical energy is kilowatt-hour.

1Kwh = 3.6 × 10^6 J.

Some example of Conversion of Electrical energy are as follow:

Fan - The electrical energy is converted into mechanical energy and heat energy.

Therefore, the electrical energy in light bulb is converted into light energy and heat energy.

Thus, we concluded that the electrical energy can be changed or converted into other form of energy.

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Answer:trrebhtfnjoenbogjetnbojtngbetgtebgte

Answer: they are the same because they both convert and deal with thermal energy because it’s not created or destroyed

Explanation:

To determine the mass of H₂O produced after a combustion reaction, you will need to use the law of conservation of mass and stoichiometry.

In order to use the law of conservation of mass and stoichiometry, you should do the following:

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0.4l of 65% KCL soln. in stock: 30% KCL and 80% KCL 5 ml 80% KCL is required to fill the doctor's order.

The full form of a chemical compound is potassium chloride made up of ionic bonds and gets dissociated in water into their ions and use to make medicines.

The KCl used in ml for 80% will be = 0.4/ 80 × 100

                                                        = 5 ml

Therefore,  0.4l of 65% KCL soln. in stock: 30% KCL and 80% KCL 5 ml 80% KCL is required to fill the doctor's order.

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Due to the moon's shorter orbital period, we won't see the same side of the moon on increasing rotation speed of moon.

We won't view the same side of the moon, no. The presented issue is based on the moon's orbital period or period of revolution. The length of time it takes the moon to make one orbit around the Earth is known as the moon's orbital period.

The lunar orbital period with regard to the Earth is typically 28 days.

Additionally, the Earth's orbit around the Sun lasts 365 days.

And the orbital period (T )'s expression is as follows:

T = 2πr/v

Here, R denotes the moon's diameter and v its orbital speed around the Earth.

It is obvious that when the moon's orbital velocity (v) increases, its orbital period shortens, allowing Earth to observe the moon's new phases.

We can therefore draw the conclusion that as the moon's rotation speed increases, its orbital period shortens, allowing Earthlings to witness the moon's various phases.

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The complete question is -

Suppose the moon rotated on its axis just as quickly as Earth. Would you still always see the same side of the moon from Earth?

The Lewis structure for iodoethane (C2H,1) is as follows.

I - C - C - H

| |

H H

| |

H H

A Lewis structure, also known as a Lewis dot diagram, is a way to represent the bonding and non-bonding electrons in a molecule. It is named after Gilbert N. Lewis, who introduced it in 1916. A Lewis structure shows the chemical symbol of each atom in the molecule and the electrons that are involved in the chemical bonds. It is used to predict the molecular geometry, reactivity, and other chemical properties of a molecule.

In this structure, the central atom is the carbon atom, and the outer atoms are the hydrogen and iodine atoms. The carbon atoms each have four bonds, which are satisfied by the three hydrogen atoms and the iodine atom. The iodine atom has one lone pair, which is not shown in the structure.

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Answer:

The correct option is;

Group 12

Explanation:

A metallic element that is shiny and silver colored that can exist in the +1 and +2 ionic states and  which forms a bright red compound with sulfur is mercury, Hg

The compound formed between mercury and silver is one of the earliest synthetic compound also known as vermilion and cinnabar. The bright red pigment of the HgS is used widely and is one of the most favorite pigment found in medieval European outstanding works of arts and in Chinese decorated wares made of lacquer as well as in mesoAmerica.

Answer:

12

Explanation:

Ag+ does not change significantly upon addition of AgCl to 6.5 * 10^-3M AgNO3.
This assumption is reasonable. When AgCl is added to the AgNO3 solution, the additional Ag+ ions from the AgCl will not significantly change the concentration of Ag+ ions in the solution since AgNO3 is a strong electrolyte and will be the dominant source of Ag+ ions.

a. The assumption that Ksp is the same as solubility is unreasonable. Ksp (the solubility product constant) is the product of the concentrations of the ions in a saturated solution at equilibrium, whereas solubility refers to the concentration of the solute that dissolves in a given solvent. These two concepts are related but not the same, and the Ksp value provides more information about the solubility behavior of a substance.

b. The assumption that Ksp of AgCl is the same in 6.5 * 10^-3 M AgNO3 as in pure water is reasonable. This assumption is based on the fact that AgNO3 dissociates into Ag+ and NO3- ions in water, which do not react with AgCl to form additional compounds. Therefore, the presence of Ag+ ions in the solution does not affect the Ksp value of AgCl.

c. The assumption that solubility of AgCl is independent of the concentration of AgNO3 is reasonable. This assumption is based on the fact that AgCl is a sparingly soluble salt, and its solubility is largely determined by the solubility product constant and the ionic strength of the solution. The concentration of AgNO3, which provides Ag+ ions for the dissolution of AgCl, does not significantly affect the solubility of AgCl.

d. The assumption that Ag+ does not change significantly upon addition of AgCl to 6.5 * 10^-3 M AgNO3 is reasonable. This assumption is based on the fact that the concentration of Ag+ in the solution is much higher than the solubility of AgCl, and therefore the addition of AgCl does not significantly change the concentration of Ag+ ions in the solution.

In summary, the reasonable assumptions are b, c, and d. The unreasonable assumption is a.
a. Ksp is the same as solubility. This assumption is not reasonable. Ksp (solubility product constant) and solubility are related, but they are not the same. Ksp is a constant that represents the equilibrium between a solid and its dissolved ions.

b. Ksp of AgCl is the same in 6.5 * 10^-3 M AgNO3 as in pure water.
This assumption is reasonable. Ksp is a constant that depends only on the temperature, not the concentration of other ions in the solution.

c. Solubility of AgCl is independent of the concentration of AgNO3.
This assumption is not reasonable. The solubility of AgCl will be affected by the concentration of AgNO3 due to the common ion effect, which states that the solubility of a sparingly soluble salt decreases in the presence of a common ion.

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Answer:

Electrons would easily move through the person if there was no rubber around the wire.

Explanation:

The black rubber material is an insulator and will not allow the conduction of heat or electrical current through it. Electrical currents are generated by the movement of electrons through materials.

Hence, if there was no rubber covering around the power cord, the person that plugged-in the power cord would have experienced electric shock because electrons would easily move through him/her from the wire.

(a) The number of grams of calcium chromate in 2.28 moles is 355.68 g

(b) The number of moles of calcium chromate in 1.82 grams is 0.012 moles.

(a) The number of grams of calcium chromate in 2.28 moles is calculated as;

Molar mass of CaCrO₄ = (40 g/mol) + (52 g/mol) + (4 x 16 g/mol)

= 40 g/mol + 52 g/mol + 64 g/mol

= 156 g/mol

Number of grams = number of moles × molar mass

= 2.28 moles × 156 g/mol

=  355.68 g

(b) The number of moles of calcium chromate in 1.82 grams is calculated as;

Molar mass of CaCrO₄ = 156 g/mol

Number of moles = number of grams / molar mass

= 1.82 g/ 156 g/mol

= 0.012 moles

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The sample initially contains 1.35mg of Pu-236, the mass of Pu-236 is present after 5.00 years is 0.402mg.

Calculation shown in image below.

The 1/2-life of a radioactive isotope is the amount of time it takes for one-half of of the radioactive isotope to decay. The half-life of a specific radioactive isotope is steady; it's far unaffected by means of situations and is unbiased of the preliminary quantity of that isotope.

information the concept of half of-life is useful for figuring out excretion quotes as well as steady-nation concentrations for any precise drug. different drugs have different half-lives; but, they all follow this rule: after one half of-existence has passed, 50% of the initial drug amount is removed from the body.

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Lead chloride ( \(PbCl_{2}\) ) is insoluble in water. The crystal lattice structure of lead chloride is very difficult to break down that means it requires high lattice energy to breakdown the structure.

Lead chloride also has certain ionic nature also makes them insoluble in water.

\(PbCl_{2}\) is an ionic compound contains or consist both \(Pb_{2} +\) and \(Cl-\).

When PbCl2 is with water, the water molecules will come around the ions and tries to make them separate - pull them apart.

But as the attraction between positive and negative ions are very high, it won't separate.

That means it requires certain energy to separate the ions out of their electrostatic force and break the crystal lattice structure.

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The correct answer is option C.  if you are looking for a non-dairy alternative to get the same amount of calcium as 8 oz of nonfat milk, canned sardines can be an excellent option.

which is 1.5 oz of canned sardines. Nonfat milk contains approximately 300 milligrams of calcium per 8-ounce serving. Sardines are an excellent source of calcium and a 1.5-ounce serving of canned sardines contains around 325 milligrams of calcium, which is equivalent to the calcium content in 8 ounces of nonfat milk.

Option A, 4.9 oz plain, nonfat yogurt, contains around 150 milligrams of calcium, which is less than half the amount present in 8 oz of nonfat milk. Option B, 4.9 oz Swiss cheese, contains around 270 milligrams of calcium, which is slightly less than the amount present in 8 oz of nonfat milk. Option D, 1 cup of lima beans, contains around 32 milligrams of calcium, which is a significantly lower amount than what is present in 8 oz of nonfat milk.

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Answer:

yy

Explanation:

Answer:

23

Explanation:

The total number of neutrons and protons of an atom is called atomic mass. The atomic mass unit is Dalton. It is represented as Da and is the standard unit used to indicate the mass of an atom. The atomic mass of elements differs as it depends on the number of protons and neutrons in a particular element.

The atomic mass of sodium

Sodium is an alkali metal that comes first in the periodic table of the 3rd period. It is the eleventh element in the table.

The atomic number of sodium = 11

In the nucleus of the sodium, the number of neutrons = 12

The atomic mass number of sodium (Na) = 11 + 12 = 23

∴ Atomic mass of sodium = 23 g/mol

If a substance is always reduced, it means that its reduction potential is more positive than the reduction potentials of all other substances in the system.

This is because a substance with a more positive reduction potential will be more likely to gain electrons and be reduced.

Reduction potential is a measure of the tendency of a substance to be reduced or to gain electrons, and is often compared to the standard hydrogen electrode (SHE).

If the reduction potential of a substance is more positive than the reduction potential of the SHE, it has a greater tendency to be reduced than hydrogen.

The greater the difference between the reduction potential of a substance and that of the SHE, the greater its tendency to be reduced.

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Based on the information in the table, the differences between the two mountain ranges are most likely due to the process of uplift and erosion.

The Appalachian Range has an average peak elevation of 900 meters and is composed of mostly sedimentary rock, which suggests that it is a very old mountain range that has undergone significant erosion over time. In contrast, the Himalayan Range has an average peak elevation of 6,000 meters and is composed of mostly sedimentary rock, which suggests that it is a relatively young mountain range that has undergone significant uplift.

The sharp, jagged peaks of the Himalayan Range are likely due to the process of uplift, which has caused the rock to be pushed upward, creating a more dramatic and rugged landscape.

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Answer:

\(V_2=5.32L\)

Explanation:

Hello there!

In this case, according to the given pressure, temperature and volume, it is possible for us to calculate the final volume via the combined ideal gas law:

\(\frac{P_2V_2}{T_2}=\frac{P_1V_1}{T_1}\)

In such a way, we solve for the final volume, V2, to obtain:

\(V_2=\frac{P_1V_1T_2}{T_1P_2}\)

Then, we plug in the given data to obtain:

\(V_2=\frac{1.19atm*2.3L*380K}{326K*0.60atm}\\\\V_2=5.32L\)

Regards!

The mass (in grams) of lithium hydroxide, LiOH present, given that 3 moles of it were obtained from the reaction is 72 g (Last Option)

We know that the mass of a substance is related to the number of mole according to the following formula:

Mole = mass / molar mass

With the application of the above formula, we can obtain the mass of lithium hydroxide, LiOH present. Details below:

Mole = mass / molar mass

Cross multiply

Mass = Mole × molar mass

Mass of LiOH = 3 × 24

Mass of LiOH = 72 g

Thus, the mass of lithium hydroxide, LiOH is 72 g (last option)

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Answer:

To determine how many electrons fit in each energy level, use the formula:

2n²

N is equal to the number of energy levels. Using this formula, we can determine that there are:

Keep in mind though, that for an atom's outermost shell, it can only contain 8 valence electrons due to the octet rule that states that an element only needs eight electrons in their outermost shell in order to be stable.

Ascorbic acid is a compound that can affect the rate of reactions in different ways, depending on its concentration. At low concentrations, ascorbic acid acts as an antioxidant.

Slowing down the rate of reaction by scavenging free radicals and other reactive species that could interfere with the reaction. At high concentrations, however, ascorbic acid can actually increase the rate of reaction by acting as a reducing agent, providing electrons to reactants and thereby speeding up the reaction.

The effects of ascorbic acid on the reaction rate of jb-76t will therefore depend on its concentration. At low concentrations, ascorbic acid will likely slow down the reaction rate by scavenging free radicals and other reactive species. At high concentrations, however, ascorbic acid could speed up the reaction rate by providing electrons to the reactants, especially if the reaction involves the transfer of electrons. Therefore, the best explanation for the different effects of ascorbic acid on reaction rate is that it acts as an antioxidant at low concentrations and a reducing agent at high concentrations.

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ur best try is to copy and paste and change some words.

Solid lead nitrate is heated and forms solid lead oxide, gaseous nitrogen dioxide, and oxygen then it form of decomposition reaction

Lead nitrate is a white color inorganic powder with the chemical formula Pb ( NO₃)₂ when Lead nitrate decomposes it produces Lead oxide a yellow colored oxide of  brown colored Nitrogen dioxide gas, and colorless Oxygen gas and also it gives yellow colors

When lead nitrate is heated it decomposes to form lead oxide, nitrogen dioxide and oxygen from the reaction, we can see that lead nitrate decomposes on heating and forms lead oxide, nitrogen dioxide and oxygen thus, lead nitrate on decomposition gives lead oxide, nitrogen dioxide and oxygen and the lead nitrate and when solid lead nitrate heated it decomposes to produce light yellow solid lead monoxide, reddish-brown nitrogen dioxide gas and colourless oxygen gas

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The three states of matter are solid - example is stone, liquid - example is water and gas - example is air.

A matter is referred to as a substance which has a certain mass and takes up a certain volume in space.

For example pen, pencil, toothbrush, water, milk are matters as well as car, bus, bicycle is also a matter. So matter is considered as a living thing and a non-living thing.

There are three states of matter and they include;

They have different properties, which can be explained by looking at the arrangement of their particles. This is the theoretical temperature at which particles have the least amount of energy and the slowest movement.

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