What is the pressure in a 8.00 L tank with 50.5 grams of chlorine gas at 365 K?

The  molar mass of the CaCl₂ is 110.9 g/mol. The calcium chloride is the ionic compound.

The molar mass of the calcium chloride that is CaCl₂  is as follows :

The molar mass of the CaCl₂  = 40.08 + 2( 35.45 )

The molar mass of the CaCl₂  = 110.9 g/mol

The ionic bond is in the between the calcium and the chlorine atoms is formed when the calcium atom will loses the two electrons to form the the cation that is  Ca²⁺ ion and the each chlorine atom will accepts the one electron to form the ion that  is the Cl⁻ ion. Therefore the  calcium chloride is the ionic compound.

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Answer:

Everything is composed of atoms! which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. The atoms of different elements vary in size and mass.

Explanation:

Hope this helped

Answer:

John Dalton in 1808 put forward a theory known as Dalton's atomic theory. The main points of this theory are 1)Matter is made up of extremely small indivisible particles called atoms. 2) Atoms of the same element are identical in all respect i.e. shape, size, and mass.... 8)An atom can neither be created nor destroyed.

Explanation:

Answer:

cholera and salmonella

Explanation:

i believe so

Answer:

Mass = 6702 g

Explanation:

Given data:

Number of moles of iron = 120 mol

Mass of iron = ?

Solution:

Formula:

Number of moles =mass/molar masa

Molar mass of iron = 55.85 g/mol

By putting values,

120 mol = mass/ 55.85 g/mol

Mass = 120 mol ×55.85 g/mol

Mass = 6702 g

Answer:

100.985

Explanation:

Answer:

when you multpily or divide powers of 10 you just add or subratact respectivley

Explanation:

(5.93 x 10 ^ 3) (2.3 x 10^ -2) = (5.93 * 2.3 ) x 10 ^ 3 +(-2)

                                             = 13.639 x 10 ^ 3-2

                                             = 13 . 639 x 10

                                              1.3639 x 10^2

The mass of nitrogen gas in the sample is 0.001355 g and the number of molecules of nitrogen gas in the sample is 2.91 x 10¹⁹ molecules.

At STP (Standard Temperature and Pressure), the temperature is 0°C (273.15 K) and the pressure is 1 atm (101.325 kPa).

Ideal gas law is: PV = nRT

Where P will be the pressure, V will be the volume, n is number of moles, R is the ideal gas constant, and T will be the temperature.

At STP, the value of R is 0.0821 L·atm/mol·K.

The volume of the nitrogen gas sample is 1120 cm³, which is equivalent to 0.00112 m³.

Using the ideal gas law;

n = PV/RT

n = (1 atm) x (0.00112 m³) / (0.0821 L·atm/mol·K x 273.15 K)

n = 0.0000483 moles of nitrogen gas

To calculate the mass of nitrogen gas, we use the molar mass of nitrogen, which is 28.02 g/mol.

Mass of nitrogen gas = n x molar mass

Mass of nitrogen gas = 0.0000483 moles x 28.02 g/mol

Mass of nitrogen gas = 0.001355 g

To calculate the number of molecules of nitrogen gas in the sample, we use Avogadro's number, which is 6.022 x 10²³ molecules/mol.

Number of molecules of nitrogen gas = n x Avogadro's number

Number of molecules of nitrogen gas = 0.0000483 moles x 6.022 x 10²³ molecules/mol

Number of molecules of nitrogen gas = 2.91 x 10¹⁹ molecules

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The number of molecules in 10.0 gram of NaOH is 15 * 10²².

To solve this question, we need to understand some terms of mole concept,

Mole - It is the amount of substance containing same number of molecules or atoms as there are atoms in 12 gram of carbon-12 isotope.

Molecules - It is group of atoms bonded together, representing the smallest fundamental unit of a chemical compound taking part in chemical reaction.

Molecular weight - The sum of atomic masses of all atoms in molecules.

Avogadro number - It is the number of atoms, ions, electrons, molecules in one mole of substance. It is represented as NA.

NA = 6.0 * 10²³ (approx)

To calculate the number of molecules, we apply the formulae,

no. of molecules = moles * NA

moles = weight / molecular weight

moles = 10.0 / 40

          = 0.25

Substituting this value to calculate number of molecules,

no. of molecules = 0.25 * 6.0 * 10²³

                            = 15 * 10²²

Therefore the number of molecules of in 10.0 g of NaOH is 15 * 10²².

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Answer:

The part of the scientific method that involves making an educated guess is the "hypothesis".

Explanation:

The specific heat of the metal is approximately 0.24 J/(g·°C)

We can use the following formula to determine the metal's specific heat:

q = mcΔT where q is the heat transmitted, m is the metal's mass, c is its specific heat, and T is the temperature change. This is how we may first determine how much heat is transported from the metal to the water:

Q = M Water, C Water, and T Water. where water is the mass of the liquid, water is its specific heat, and water is the temperature change of the liquid. We are aware that water has a mass of 50.0 mL, which is equal to 50.0 g (water has a density of 1 g/mL). Water has a specific heat of 4.18 J/(g°C) or less, and a change in temperature of the water is 11.0 °C (31 °C - 20.0 °C). By replacing these values, we obtain:

q = 50 g, 4.18 J/(gC), 11.0 °C, and 2309 J. The heat transferred from the metal to the water must match the heat lost by the metal because no heat is lost to the environment. The same calculation can be used to determine how much heat the metal loses: q = mm, cm, and Tm where mm is the metal's mass, cm is its specific heat, and Tm is the temperature change of the metal. We are aware that the metal weighs 26.7 g and that its temperature changed by (31 °C - 192 °C) = -161 °C. Using these values as substitutes, find by cm, we get: cm = q/(mm × ΔTm) = 2309 J / (26.7 g × (-161 °C)) ≈ 0.24 J/(g·°C).

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Answer:

true

Explanation:

The density of the liquid is 0.794 g/mL.

To calculate the density of the liquid, we can use the formula:

Density = Mass / Volume

Given information:

Mass of the graduated cylinder = 105.56 g

Volume of the liquid = 45.4 mL

Total mass of cylinder and liquid = 136.15 g

To find the mass of the liquid, we subtract the mass of the cylinder from the total mass:

Mass of the liquid = Total mass - Mass of the cylinder

Mass of the liquid = 136.15 g - 105.56 g

Mass of the liquid = 30.59 g

Now we can calculate the density:

Density = Mass of the liquid / Volume of the liquid

Density = 30.59 g / 45.4 mL

Converting mL to cm³ (since 1 mL = 1 cm³):

Density = 30.59 g / 45.4 cm³

Density = 0.674 g/cm³

Rounding to three decimal places, the density of the liquid is approximately 0.794 g/mL.

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Answer:

Trigonal pyramid

Explanation:

The product of electrolysis : Al at cathode and Cl₂(chlorine) at anode

Given

Aluminum chloride compound

Required

The product of electrolysis

Solution

The rule :

The reaction at the cathode(the negative pole) :

1. the reduced active metal is water, other than that the metal will be reduced

2. H⁺ of the acid will be reduced

The reaction at the anode((the positive pole) :

1. if the electrodes are not inert then the metal is oxidized

2. If inert then:

a. OH⁻ from the base will be oxidized

b. The halogen metal will oxidize

In the electrolysis of molten AlCl₃ with an inert electrode, the cation will be reduced at the cathode and the anion will be oxidized at the anode

Cathode : Al³⁺ + 3e⁻ ⇒ Al(s)

Anode : 2Cl⁻⇒Cl₂(g) + 2e⁻

The boiling point of the solution in number 12 would be 100.624 °C.

The boiling point of a solution depends on many factors, including the concentration of the solute and the nature of the solvent. The value you provided (Kb of water = 0.512 °C/m) is the molal boiling point elevation constant, which is used to calculate the change in boiling point of a solvent when a solute is added. Using the molar boiling point to multiply the number ascribed to the degree Celsius of the solution which is 12 plus the boiling point of water. which is 100..

Therefore, the correct answer is as given above

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A statement best describes the usefulness of a model to investigate molecules at the microscopic level: A model’s usefulness depends on the accuracy of its predictions.

In science, a model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.

Prof John Montgomery discusses how and why scientists use models, with climate change as an example.

Models are a mental visual way of linking theory with experiment, and they guide research by being simplified representations of an imagined reality that enable predictions to be developed and tested by experiment.

Models have a variety of uses – from providing a way of explaining complex data to presenting it as a hypothesis. There may be more than one model proposed by scientists to explain or predict what might happen in particular circumstances. Often scientists will argue about the 'rightness' of their model, and in the process, the model will evolve or be rejected. Consequently, models are central to the process of knowledge-building in science and demonstrate how science knowledge is tentative.

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Answer:

Fluorine. This element has the greatest electronegativity value, so has the greatest attraction to electrons in a bond.

Explanation:

The atom of element with the strongest attraction for electrons in a chemical

bond from the options is Chlorine.

The element with the strongest attraction for electrons in a chemical bond is

the most electronegative element.

The electronegativity of an atom is the tendency of an atom to attract

bonding pairs of electrons.

Generally, electronegativity of an element increases across the period. The

electronegativity of an element also decreases down the group. The most

electronegative element is fluorine.

Halogen group are naturally electronegative.

Therefore, the most electronegative element in the option is chlorine and its

the element that has the strongest attraction for electrons in a chemical

bond.

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Pressure only affects the solubility of a substance in the gaseous phase, not the liquid or solid phase.

Solubility may be defined as the maximum amount of any substance that will significantly dissolve in a definite amount of solvent at a specified temperature. It is the property of substances that shows their ability to intermingle with other substances known as solvents.

According to the context of this question, liquids and solids exhibit practically no alteration in solubility with respect to changes in pressure. But when you enhance the pressure of a gas phase, the collision frequency between its particles increases, and thus the solubility goes up, as you reduce the pressure, the solubility goes down.

Therefore, the pressure only affects the solubility of a substance in the gaseous phase, not the liquid or solid phase.

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Answer:

The answer to the question is explained below

Explanation:

A chemical is any substance or an element that can occur naturally or can be created artificially. Chemicals are found in many places like the soil, water, air. They can be found solely as an element without being combined with other elements, and they can also be found as a mixture in compounds.

Exposure to chemicals can be made possible through direct contact with the eye, broken skin. It can also be possible through Inhalation of gases, also through the mouth.

Long-term effects occur when an individual has been exposed to harmful chemicals over a long period of time, with the effect often fatal. Long-term exposure to chemicals include:

1. The weakening of the immune system

2. can cause cancer. For example, Carcinogens that cause cancer in humans, are gotten from exposures to Carbon Tetrachloride, Chloroform.

3. It can cause brain damage

4. It can lead to reproductive disorders

5. It can lead to eye damage, skin problems, and respiratory problems

Short-term effects occur when an individual has been exposed to harmful chemicals accidentally, or within a short period of time. As such, depending on the type of chemical, the amount the individual is exposed to, the effect is usually less fatal and can be addressed. Short-term exposure to chemicals include:

1. Skin or eye irritation

2. Headache

3. Nausea

4. Cough

5. Dizziness

6. Physical injuries

Answer:

In general, anions are larger than the corresponding neutral atom, since adding electrons increases the number of electron-electron repulsion interactions that take place.

Explanation:

The acid hydrogen chloride(HCl) could be used to prepare dry crystals of salt cobalt(II) chloride-6-water from the insoluble base cobalt(II) carbonate.

Equation of the reaction:

cobalt(II) carbonate + Hydrogen chloride => cobalt(II) chloride + Hydrogen-carbonate

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Answer:

HCL is your the answer of which is the acid

The acid should be considered as the HCL namely hydrogen chloride (HCl).

It is used for neutralization the alkaline agents that acted as the bleaching agent in terms of food, textile, metal.

It should be neutralized at the time of realization into the soil. And, hydrolyzed when it should be exposed to water.

hence, the second option is correct.

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Answer:

He has a deep respect for the horse,so he treats him with care

Answer:

It's C

Explanation:

Good luck on the test.

Hence, the statement A carbon radical is trigonal planar and A carbon radical is sp2 hybridized correctly describe the structural characteristics of radicals. Therefore, the correct option is Correct Answer.

Radicals are molecular species with unpaired electrons. The radical species' unpaired electrons tend to have unique electronic properties, making them quite reactive. In general, radical species tend to react in a very selective and controlled manner, making them important intermediates in various chemical transformations.

In the case of organic compounds, the radicals are most commonly formed by homolytic cleavage of covalent bonds.

The following are the structural characteristics of radicals:

Radical species' electronic structure includes an odd electron that resides in an orbital that is not occupied by another electron. This electron is called an unpaired electron. A carbon radical is sp2 hybridized. A carbon radical is trigonal planar and has a shape that is similar to that of a carbocation or a carbanion.

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Answer:

I do not know how to solve this bit i THINK 38.56

Explanation:

The concentration of A decreases and then levels out. Option A

In many chemical reactions, a reactant is consumed as the reaction progresses, leading to a decrease in its concentration over time. The reactant molecules are transformed into products, and as the reaction proceeds, the concentration of the reactant gradually diminishes.

At equilibrium, the concentrations of both reactants and products remain relatively constant over time, although they can coexist.

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Answer:

Explanation:

having an average mass of 12.01. It's not much different than you would expect from an atom with 6 protons and 6 neutrons. The number of carbon isotopes doesn't change the atomic mass very much. As you move higher in the periodic table, you will find elements with many more isotopes.

The pH of the sol-gel solution plays a crucial role in determining the size and shape of the silica nanoparticles produced during the freeze drying assisted sol-gel process.

The pH of the solution used in the freeze drying assisted sol-gel process can have an influence on the spherical shape and particle size of silica nanoparticles (SNPs). When the pH is adjusted, it affects the hydrolysis and condensation reactions that occur during the sol-gel process. This, in turn, can impact the formation and growth of the silica nanoparticles.

In general, at higher pH values, the hydrolysis reaction is favored, leading to the formation of larger silica particles. On the other hand, at lower pH values, the condensation reaction is favored, resulting in the formation of smaller particles.

Furthermore, the pH also influences the surface charge of the SNPs, which can affect their stability and aggregation behavior. At specific pH values, the surface charge can be neutralized, leading to particle aggregation.

Overall, the pH of the sol-gel solution plays a crucial role in determining the size and shape of the silica nanoparticles produced during the freeze drying assisted sol-gel process.

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