A 6.5-L sample of hydrogen sulfide is treated with a catalyst to promote the reaction shown below.

2H₂S(g) + O₂(g) → 2H₂O(g) + 2S(s)

If the H₂S reacts completely at 2.0 atm and 290 K, how much water vapor, in grams, is produced?

Explanation:

Chlorine has a higher electronegativity than hydrogen, but the chlorine atom's attraction for electrons is not sufficient to remove an electron from hydrogen. Consequently, the bonding electrons in hydrogen chloride are shared unequally in a polar covalent bond.

Answer: CONDENSED ELECTRON CONFIGURATION FOR MN2+ =

1.[Ar} 4[tex]s^{2[/tex] 3[tex]d^{3}[/tex]

2.This is paramaganetic

Explanation:

1. On the periodic table, you first find Mn which is in the "d block section"

The condensed electron configuration of Mn is [Ar} 4[tex]s^{2[/tex] 3[tex]d^{5}[/tex] however since the charge is 2+ this means that the atom is losing two-electron. So configuration as stated before is [Ar} 4[tex]s^{2[/tex] 3[tex]d^{3}[/tex]

2. This Configuration is paramagnetic since the "d" orbitals are not all filled with electrons.

Hope this helps someone out!

Answer:

The Biosphere is the part of the earth where life exists.

Biosphere is all organisms on Earth for example plants animals and microoganisms.

Explanation:

The magnitude of the crystal field stabilization energy in the octahedral field depends on (I) the nature of the ligand. (II) the charge of the metal ion; (III) whether the metal is in the first, second, or third row of the transition elements;

The crystal field stabilization energy is defined as the energy of the ligand field electronic configuration minus the energy of the isotropic field electronic configuration. CSFE depends on several factors, including: geometry (d changes the orbital splitting pattern) d number of electrons.

The splitting is pompous by the following-

The nature of the metal ion.

Oxidation state of metals. ...

Arrangement of ligands around metal ions.

Metal coordination numbers (i.e. tetrahedral, octahedral).

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In addition to rivers and oceans, Titan appears to feature lakes of liquefied ethane and methane, which some scientific studies hypothesize could support fictitious non-water-based life.

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The density of the penny is 2g/mol

Density is a measure of how compact the mass in a substance or object is

Here given data is

Mass of penny = 3gram

Volume of penny = 31.5 ml after penny was dropped

Volume of penny = 30 ml before penny was dropped

We have to calculate the density of penny = ?

Volume of penny = 31.5 - 30ml = 1.5ml

So density = mass/volume

Density = 3gram/1.5ml

Density = 2g/mol

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A solid consisting of clear crystals is combined with a blue liquid in a container and the following observations are obtained 3.

A chemical response might be going on these aren't specific indicators a chemical response may not be occurring. An exchange in shade isn't constantly a chemical change. A chemical change has taken region. One way that we recognize that is due to the fact bubbles are fashioned. those bubbles suggest that the hydrogen peroxide has been damaged aside from water and oxygen.

The trade that happens whilst or greater materials act on each other to form an exceptional substance. Use this word in a sentence or provide an instance to show you understand what means when the color scent and flavor of the aggregate changed I knew a chemical reaction had taken place. sometimes when solutions go through a chemical reaction one of the new products formed from the response is not soluble.

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The plant’s production of carbohydrates stops producing high-energy sugars altogether.

When carbon dioxide is completely removed from a plant's environment it is expected that the plant will stop producing energy-rich sugars altogether.CO2 is required for plants to photosynthesize. So without CO2, plants have no way to make energy. In this scenario, it will probably wither.

Carbon dioxide is an important greenhouse gas and helps trap heat in the atmosphere. Without them, our planet would be uninhabitable and cold. Plant photosynthesis produces oxygen and carbohydrates in a strict ratio, so we run out of oxygen as soon as we eat. But lethal levels of carbon dioxide will be reached long before these things happen.

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The structure of one form of boron nitride . this form of boron nitride is one of the hardest substances known as the boron nitride  is the network solid of atoms that are covalently bonded with the fixed angle.

The boron nitride is the solid network of covalently bonded atom with fix angle. boron nitride will compressed to a super hard. its hardness based on the lattice work of the boron and the nitrogen atoms.

Thus, The structure of one form of boron nitride . this form of boron nitride is one of the hardest substances known as the boron nitride  is the network solid of atoms that are covalently bonded with the fixed angle.

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The molecular formula of this compound is C4H4O4 .

What is molar mass ?

In chemistry, the molar mass of a compound is defined as the mass of a sample of that compound divided by the amount of substance. This is the number of moles in that sample measured in moles. Molar mass is a mass property, a molecular property of matter. Molar mass is the average of many instances of a compound that often differ in mass due to the presence of isotopes . Most commonly, molar mass is calculated from standard atomic masses, so it is a global average and a function of the relative isotopic abundances of constituent atoms on Earth. Molar mass is good for converting between the mass of a substance and the quantity of a bulk substance.

1 mol contains 5.8/0.05 g = 116 g

of which 48 g is carbon

64g is oxygen remaining 4g hydrogen

4-C, 4-O, 4-H

C4H4O4

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The only possible reason for the difference in mass is if there is an error during weighing.

According to the law of conservation mass, masses cannot be destroyed, and neither can they be created. They can, however, change forms during the course of a process or reaction.

Going by this law, if the combined weight of the lawn sand and the ammonium sulfate is 51.4 grams, after separation, the addition of weights of the resulting sharp sand and that of the ammonium sulfate should equate to 51.4 grams.

But that is not the case here. The addition of their weights resulted in 52.6 grams. This means that something is not right somewhere.

Beyond these two reasons, the source of error could also be that the total mass of the two products was overestimated by error.

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The Ph of the buffer solutions change after the addition of 10 drops of 0.1m NaOH because when a strong base (OH-) is added to the buffer solution, the hydroxide ions are consumed by the weak acid that results forming water and the weaker conjugate base of the acid.

A buffer solution is an aqueous solution which consists of a mixture of weak acid and its conjugate base. Its PH changes in little amounts when we add small quantity of acid or base to it.

When we add a strong base (OH-) to the buffer solution, the hydroxide ions are consumed by the weak acid which results in forming water and the weaker conjugate base of the acid. As a result the amount of the weak acid decreases while the amount of the conjugate base increases.

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Answer:

Using styrofoam cups is obviously a lot cheaper than using precise equipment, but it can still do the same job. However, remember that styrofoam cups are not exact and leave a lot of room for error.

The answer to the second part is: Calibration of Setup

Explanation: You can use these cups because their walls are insulated which prevents the transfer of heat between the system and its surroundings.

1 mol of H2 gas were produced in the reaction

Zn + 2HCl --> ZnCl2 + H2

This is a single displacement reaction

What is a single displacement reaction?

It is a kind of oxidation-reduction chemical reaction when an ion or element moves out of a compound, i.e., one element is replaced by the other in a compound.

What is mole ratio?

It is the ratio between amounts in moles of any two compounds involved in a balanced chemical reaction.

As we can see mole ratio from the coefficient of balanced reaction:

2 moles of HCl produces 1 mole of H2 gas

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Because the Trichloroisocyanuric acid (TCICA) test is used to separate primary from secondary alcohols. Both major alcohols, methanol, and ethanol will undergo TCICA's oxidation process. Consequently, acetonitrile is employed as the solvent for the TCICA test rather than one of these.

What is TCICA test?

Simple primary and secondary alcohols can easily be separated from one another based on how quickly they oxidize when exposed to trichloroisocyanuric acid (TCICA). The TCICA test is carried out by adding the unknown to a solution of TCICA in acetonitrile3 containing hydrochloric acid4 and timing how long it takes for a precipitate5 to develop. Secondary alcohols respond quickly while primary alcohols react more slowly.

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The volume (in litres at 298 K and 6.09 atm) of chlorine gas, Cl₂, that is required to react with 7.44 g of P is 2.41 L

To determine the volume of the chlorine gas that will react with 7.44 g of P, we shall begin by obtaining the mole of the chlorine gas, Cl₂ that reacted. This can be obtained as follow:

2P + 5Cl₂ → 2PCl₅

From the balanced equation above,

2 moles of P reacted with 5 moles of Cl₂

Therefore,

0.24 moles of P will react with = (0.24 × 5) / 2 = 0.6 mole of Cl₂

Haven obtain the mole of chlorine gas, Cl₂, we shall determine the volume of the chlorine gas, Cl₂, required by using the ideal gas equation. This is shown below

PV = nRT

6.09 × V = 0.6 × 0.0821 × 299

Divide both sides by 6.09

V = (0.6 × 0.0821 × 299) / 6.09

V = 2.41 L

Thus, the volume of chlorine gas required is 2.41 L

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1) The endocrine glands pictured above are:

2) Organs of the endocrine system are often called glands. An organ is responsible for the production of one or more substances such as hormones, digestive juices, perspiration, tears, saliva, or milk.

The compounds are released directly into the circulation by the endocrine glands. The compounds are released by exocrine glands into a duct or aperture to the interior or outside of the body.

3) Pituitary Gland produces the following hormones:

The endocrine system regulates juvenile growth and development, adult body processes, and the reproductive process. All of the body's key activities and processes are controlled and regulated by the endocrine system: Energy management. Reproduction.

The pituitary gland, for example, is located at the base of the brain and is no larger than a pea. Despite its tiny size, the pituitary gland is sometimes referred to as the "master gland." Many other endocrine glands are controlled by the hormones it produces.

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The process in which the nuclei of unstable atoms can become more by emitting particles or electromagnetic radiation is called radioactive decay.

In the process of radioactive decay an unstable atomic nucleus loses energy by electromagnetic radiation.This involves transformation of one element into another by changing the number of protons in the nucleus.It is the emission of energy in the form of radiation. This occurs due to instability of nucleus.emission of energy in the form of radiation.

Radioactivity is a source of heat.It causes a huge amount of energy released into the surrounding in the form of ionising radiation.This includes alpha ,beta and gamma rays.

After undergoing radioactive decay,it tends to transform into the atom of some other elements known as decay products.

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The amount of brownie mix bags needed to use up 3 eggs and 1 cup of oil is 3, option C.

1 egg and 1/3 cup of oil is needed for a brownie mix bag

Therefore the brownie mix bags needed to consume 3 eggs and a cup of oil is equal to;

1 egg and 1/3 cup = 1 brownie mix bag

3 eggs and 1 cup = ?

Cross multiplied;

3/1 x 1 = 3

For one cup of oil and 3 eggs to be used up, it requires 3 bags of brownie mix.

The complete question is:

If 1 egg and 1/3 cup of oil are needed for each bag of brownie mix, how many bags of brownie mix do you need if you want to use up all 3 eggs and 1 cup of oil?

a. 1

b. 2

c. 3

d. 4

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Answer:

The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet.

Explanation:

The intermolecular force that is common to both is the dipole forces

b) The lesser molecular mass of [tex]SeOF_{2}[/tex] made it to have a lesser boiling point.

We know that apart from the forces that holds the atoms together in a molecule, there is yet another force that holds the molecules together in a particular state of matter. Let us recall that matter is anything that has mass and occupy space.

If we look at the two compounds that we have, it is clear that the commonality between the two compounds is that the both of them are held together by the dipole forces because the molecules are composed of atoms that are polar.

On the other hand, there is a dispersion force that is found in every molecule. The magnitude of the dispersion forces depends on the molecular mas of the molecule. Given that [tex]SeOCl_{2}[/tex] has a greater molecular mass than [tex]SeOF_{2}[/tex], it would necessarily have  grater boiling point than the later.

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There would be a total of about  4 half lives

Half-life is a term used in nuclear physics and chemistry to describe the amount of time it takes for half of a given quantity of a radioactive substance to decay. It is the time required for half of the original quantity of the substance to undergo radioactive decay.

We know that;

N/No = (1/2)^t/t1/2

6/96 = (1/2)^t/950 * 10^6

(1/2)^4 = (1/2)^t/950 * 10^6

4 = t/950 * 10^6

t = 3.8 * 10^9

Number of half lives = 3.8 * 10^9/950 * 10^6

= 4 half lives

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The process of photosynthesis is written as:

6CO2 + 6H2O → C6H12O6 + 6O2.

This means that reactants, six carbon dioxide molecules and six water molecules are converted by light energy captured by chlorophyll into a sugar molecule and six oxygen molecules which are the products.

What are reactants?

Reactants → Products

A + B → C

In this example, A and B are reactants, and C is the product.

Such a reaction in which two or more than two reactants combine to form single product is called a Combination reaction.

The reactant is C, and the products are A and B.

Such a reaction in which a single reactant decomposes into its constituents elements or compounds is called a Decomposition reaction

Here, in photosynthesis equation, reactants are 6CO2 and 6H2O

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An (aq) + 1 e⁻ → A⁻(aq) at the cathode and B(aq) → B⁺(aq) + 1e⁻ at the anode.

Oxidation is lost at the anode consequently, the oxidation 1/2-response happens in the 1/2-cellular containing the anode. discount is received at the cathode so the reduction half-response takes place in the 1/2-mobile containing the cathode. the only one with the highest discount potential might be what you need to pick out because the reduction 1/2-response and therefore be your cathode.

The one with the lowest reduction potential will be what you want to select as the oxidation-1/2 response and consequently be your anode. The response at the anode is oxidation and that on the cathode is discount. right here, the anode is superb and the cathode is the terrible electrode. The anode is the electrode where electricity moves into. The cathode is the electrode in which power is given out or flows out. The anode is typically the effective aspect. A cathode is a poor side.

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The shell's outside surface area is 452.57 cm2 and its inside metal volume is 636.95 cm3.

Atomic components like electrons, neutrons, & protons make up metals. The quantity of protons in an atom can be used to identify it from an atom of another element. About 25% of the earth's crust is made up of metals.

Diamond is merely an allotrope of carbon; it is in no manner a metal. It doesn't display any of the physical or chemical characteristics of metals, such as their electrical properties, malleability, ductility, or how they react to acids or salts, among other things.

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At 318 kelvin temperature will the vapor pressure be 4.50 times higher than it was at 301k.

Given : [tex]P_{1}=p_{1},P_{2}=4.50p_{1},T_{1}=301k,H=71.77kj/mol[/tex]

Substituting in the given equation:

[tex]ln(4.50p_{1}/p_{1})=71.77*1000/8.314(1/301-1/T_{2})[/tex]

[tex]1.50=8632(1/301-1/T_{2})[/tex]

[tex]1.50=28.67-8632/T_{2}[/tex]

[tex]T_{2}=8632/21.17[/tex][tex]T_{2}=317K[/tex]

State Clausius-Clapeyron theorem.
The Clausius-Clapeyron relation describes the relationship between pressure and temperature at a non - continuous phase bridge between the two phases of matter of the a single constituent, with vapour pressure playing a key role.

State Clausius-Clapeyron equation

[tex]ln(p2/p1)=H/R(1/T_{1}-1/T_{2})[/tex]

Thus, at 318K temperature, the vapor pressure is 4.50 higher times than it was at 301K.

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The number of bonding pairs is equal to 3 and the number of lone pairs is 1.

Each atom shares an electron when two atoms join together to create a bond. The electrons involved in this relationship are referred to as the bond pairs of electrons. A lone pair, also known as an unshared pair or a non-bonding pair, is a pair of valence electrons that are not shared with another atom in a covalent bond. Atoms' outermost electron shell contains lone pairs.

Each nitrogen atom in N₂ has three bonding pairs and one lone pair.

Formal charge = Number of Valence Electrons - Number of Lone Electron Pairs - (Number of Bonded Electron Pairs/2) = 5 - 2 - (6/2) = 0

Therefore, each nitrogen atom in N₂ has a formal charge of zero.

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Answer:

Mo-96

Explanation:

We know that isotopes are elements that have different numbers of neutrons while electron and proton numbers stay the same. Some isotopes exist in greater numbers than others. The atomic mass is the average of all the existing isotopes of an element. Therefore, the number the atomic mass is closest to is the most abundant isotope. We can round 95.94 to 96 because that is the closest number. That means that Mo-96 is the most abundant.

Answer:

1. Pharynx

2. Larnyx

3. Mouth

4. Trachea

5. Lungs

6. Diaphragm

7. Bronchi

8. Alveoli

9. Nasal Cavity

10. Bronchioles

The result of all of these scientific contributions except Rutherford's gold foil experiment proved the existence of the nucleus.

The valence electrons mainly determine the chemical houses of the elements. The elements inside the equal group have comparable chemical homes because they have identical valence shell electron configurations. The electrons in the power degrees with the highest range are in common the farthest from the nucleus.

Because variations in electrons placed inside the outermost stage distinguish an atom from its nearest noble fuel these are the electrons accountable for the atom's chemical conduct. Electrons located inside the outermost shell of the electron cloud are called valence electrons and feature the best power. Valence electrons determine the chemical homes of an element or how the valence electrons of 1 element are shared or traded with valence electrons of other elements to create new molecules.

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