the gas generated by the reaction of hydrochloric acid and zinc metal is collected in the apparatus shown in part i and allowed to equilibrate to the barometric pressure. the barometric pressure is 755 mm hg at 18oc. what is the total pressure of all gases inside the container?

Answer:

German chemist G.E. Stahl

Explanation:

this theory was first articulated in 1697

G. E. Stahl in 1697 is the scientist who is  credited with early, quantitative data on redox reactions.

The Redox reactions comprise of two parts a reduced part and an oxidized part, which occur simultaneously . The part which is reduced gain electrons and hence there is a increase in oxidation state of the species.

While, the part which is oxidized looses electrons and hence there is a decrease in oxidation state of the species.During redox reactions, there is no net change in the number of electrons . Electrons which are given off in oxidation are used up in reduction.

The ion or molecule which accepts electrons is called as oxidizing agent while the ion or molecule which donates electrons is called as a reducing agent.

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Answer:

1.08 x 10²⁵molecules

Explanation:

From the mole concept we know that ;

      1 mole of any substance contains 6.02 x 10²³ molecules

This number is the Avogadro's number.

 So;

  18 mole of CH will contain:

       Number of molecules of CH  = 18 x 6.02 x 10²³ = 1.08 x 10²⁵molecules

The number of molecules is therefore 1.08 x 10²⁵molecules

The given reaction is a double replacement reaction; option B.

A chemical reaction is a reaction in which chemical changes occurs in the atoms of reactants which results in the formation pf products.

The given reaction is as follows:

Since exchange of ions occur, it is a double replacement reaction.

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In the first step of the aldol reaction, an enolate ion is generated by the removal of an acidic alpha-proton by the base catalyst.

In the case of ethanal, this results in the formation of ethanal enolate. The ethanal enolate is stabilized by 1 additional resonance structure, which allows for the delocalization of electrons and contributes to its stability. The base catalyst, such as hydroxide ion or alkoxide ion, can remove the relatively acidic α-proton, generating the enolate ion. The enolate ion is a resonance-stabilized anion, which is a powerful nucleophile that can attack the electrophilic carbonyl carbon of another molecule. This nucleophilic attack is the second step of the aldol reaction, which results in the formation of a new carbon-carbon bond and the generation of a β-hydroxy carbonyl compound.

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Answer:

C₃H₆O₂

Explanation:

Propionic acid is a colorless liquid with a sharp rancid odor. Produces irritating vapor. (USCG, 1999)

Answer:

He grouped elements with similar chemical and physical properties.

Hope this helps

Yo,

In Geranium plant life red vegetation is given by using the allele R this is dominant (so RR or Rr ) genotype will produce crimson plant life.

If we communicate approximately the connected punnet square which i took from the workout e book, you could see that there was a cross made among vegetation with heterozygous genotype for red flora.

P1: Rr X Rr

Gametes: R: r : R : r

F1: RR: Rr: Rr: rr

so there is three: 1 in F1 offspring for red to white plant life.

Now the query is set f2 technology, while we cross F1 generation suppose we do a move of Rr and rr from F1 generations allow us to see what takes place.

F1: Rr: rr

Gametes: R: r: r: R

F2 : Rr : rr: Rr: rr

Rr: purple flowers

rr: White flora:

So the ratio in F2 era might be 2 crimson : 2 white. Please see connected punnet squares (first one for query) and the second of F1 move for better know-how.

I'm hoping that this will benefit you, so from my assumption and study it'd be 2 crimson : 2 white, if this is indeed the one i'm thinking of since nothing else was provided, if not please correct me.

Answer: 2 red : 2 white

Explanation:

I know

Answer:

Yes, actually it is a compound.

Explanation:

There are important differences between the properties of a mixture and a compound. In this table, the column Mixture refers to the gasses hydrogen and oxygen, and the column named Compound refers to water.

In this calculation, we will determine the mass of the solution, the molar concentration of the HNO₃ solution, and the mass concentration of the medication in the mixture. Therefore,

1. The mass of the solution is 412 grams.

2. The molar concentration of the HNO₃ solution is 0.25 mol/L.

3. The mass concentration of the medication in the mixture is 10 mg/mL.

1. To calculate the mass of the solution, we can multiply the volume (0.40 L) by the density (1.03 g/mL). However, we need to convert the density to g/L by multiplying it by 1000 since the volume is given in liters:

Mass = Volume × Density

    = 0.40 L × (1.03 g/mL × 1000 mL/L)

    = 0.40 L × 1030 g/L

    = 412 g

Therefore, the mass of the solution is 412 grams.

2. The molar concentration (CM) can be calculated using the formula:

CM = Number of moles / Volume

In this case, the number of moles of HNO3 is given as 0.20 mol and the volume is 0.80 L:

CM (HNO₃ sol.) = 0.20 mol / 0.80 L

                = 0.25 mol/L

Therefore, the molar concentration of the HNO₃ solution is 0.25 mol/L.

3. The mass concentration (y) can be calculated by dividing the mass of the medication (1.0 g) by the volume of the total mixture (100.00 mL). Since we want the answer in mg/mL, we need to multiply the result by 1000 to convert grams to milligrams:

y = (Mass of medication / Volume of mixture) × 1000

y = (1.0 g / 100.00 mL) × 1000

  = 10 mg/mL

Therefore, the mass concentration of the medication in the mixture is 10 mg/mL.

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The  hypothetical scenario of the Lab Report Experimental Methods is given below.

Procedure:

Lastly, We also noted any observations about the flight characteristics of each airplane design, such as stability, speed, and direction.

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Answer:

The answer is 2

Explanation:

There are two energy sublevels in the second principal energy level. These two energy sublevels are 2s and 2p. The energy distribution in an atom is divided into a number of principal energy levels, and the principal energy levels are again divided into four basic energy sublevels.

Answer:

0.32 moles of H2

Explanation:

I will assume the question concerns the production of water from hydrogen and oxygen(?).  If theis is correct, start with a balanced chemical reaction.

O2 + 2H2 = 2H2O  

2 O and 4 H on both sides of the reaction: it is balanced.

The balanced equation tells us we need 2 moles of H2 for every 2 moles of H2O, a 1:1 molar ratio.  If we want 4 moles of H2O, we'd need 4 moles of H2.

If we want 0.32 moles of H2O, we need 0.32 moles of H2.

The three (3) examples from the sword fighting scene that showed Inigo and the masked man's similarities are:

Inigo Montoya was one of the fictional character in the novel titled "The Princess Bride" and written by William Goldman's in 1973. Inigo hails from the village called Arabella and he was raised by his father Domingo Montoya, who was a master craftsman that makes sword.

In The Princess Bride, Inigo had a swordfight with a man in black (masked man) and they have the following things in common:

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Due to the fact that the atoms in metals form a grid throughout which outside electron can easily travel, metals are efficient conductors of both electricity and heat.

The architecture of the metal, as was previously said, is what renders them such excellent electrical conductors. Metal manages to have a strong structure while also allowing electrons to move freely through it. Several types of metallic bonding exist in metals.

Because of how tightly packed their particles are, metals are pretty brilliant heat conductors because vibrations are transferred very fast. Also, they have a lot of free electrons. Metals gain their strength from these as they gently float through the structure.

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Answer:

19.05 g have been oxidized

Explanation:

This is the unballanced equation:

H₂SO₄ + Cu → CuSO₄ + SO₂ + H₂O

Let's balance as a redox one:

Cu° oxidizes to Cu²⁺

Cu → Cu²⁺ + 2e⁻

SO₄⁻² reduces to SO₂

We add 2 water in the left side in order to ballance the O, so we add 4 protons to the right side, to ballance the H.

SO₄⁻² + 4H⁺ + 2e⁻ → SO₂ + 2H₂O

In the 2 half reactions, we have the same electrons, we sum both equations, so we have the main equation ballanced (we cancel the e⁻):

2H₂SO₄ + Cu → CuSO₄ + SO₂ + 2H₂O

We determine the moles of sulfuric acid:

M = moles /L → 0.5 mol/L . 1.2L = 0.6 moles

As ratio is 2:1, we propose

2 moles of sulfuric react to 1 mol of Cu

0.6 moles of sulfuric will react to (0.6 . 1) /2 = 0.3 moles of Cu

We determine the mass: 0.3 mol . 63.5 g/mol = 19.05 g

Answer:

This statement is in the context of Lewis Structures, which are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. The diagrams show the valence electrons of the atoms that participate in a bond.

When there is more than one possible site in the molecule or ion, the central or the charged atom must be focused on.

To determine which atom is the central or charged atom, you should look at the molecular/ionic structure and identify the atom with the highest electronegativity or charge density.

In general, the atom with the highest electronegativity or charge density is the central or charged atom.

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Answer:

carbon atoms

Explanation:

Let us look at the molecular formulas of each compound;

Butanol= C4H10O

Butene= C4H8

We can clearly see that the both compounds contains four carbon atoms each. Hence the correct answer is that the both compounds contain the same number of carbon atoms

Oxygen is indeed a gas under normal circumstances. However, the gas transforms into a liquid or a solid at low temperatures and/or high pressure. The air has 0.21 atm of oxygen in it.

The energy-producing process that powers the metabolism rate of most living organisms, respiration, depends heavily on oxygen. All living things, including humans, depend on the air that we breath to survive.

Oxygen is produced by cyanobacteria, algae, and plants. Photosynthesis is how they accomplish this. They convert both water and carbon dioxide create glucose and oxygen using the sunlight's energy. The sugars are used in their diet. Oxygen has small intermolecular forces.

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Answer:

c. 39

Explanation:

You round the number 39.098 to make it easier. Since you can't round it up to forty because the number after the 9 in-front of the decimal is a over i is unable to be rounded up

The correct net ionic equation for the reaction occuring here is :

2CH3COOH(aq) + CaCO3(s) → Ca2+ + 2CH3COO- + CO2(g) + H2O(l)

An ionic equation is a chemical equation that represents the reaction of ionic compounds in an aqueous solution. In this type of equation, the ions that are present in the solution are explicitly shown, while the other species are omitted.

The ionic equation is based on the fact that in aqueous solutions, ionic compounds dissociate into their constituent ions. For example, when table salt (NaCl) is dissolved in water, it dissociates into positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-). An ionic equation shows the chemical reaction that occurs between the ions in the solution. It focuses on the ionic species that are involved in the reaction and ignores any spectator ions that are present in the solution but do not participate in the reaction.

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Complete Question:-

Hard water deposits consist primarily of calcium carbonate, an insoluble salt. The addition of acetic acid to a hard water deposit results in the hard water deposit dissolving, and in the process there is bubbling and fizzing consistent with a gas being formed in the reaction. What is the correct net ionic equation for the reaction occurring here?Term

The pH of the buffer is 3.75. This is because the pKa of formic acid is 3.75, and the concentrations of the acid and its conjugate base in the buffer remain constant.

The pH of a buffer is determined by the concentrations of both the acid and its conjugate base. Since the pKa of formic acid is 3.75, this means the acid and its conjugate base must have concentrations of 0.20 M and 0.21 M respectively in order to keep the pH at 3.75. This is the case with the given buffer, therefore the pH is 3.75.

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Answer:

It is not a legitimate chemical name because the methyl group on carbon 1 increases the length of the carbon chain to seven carbon atoms thus making the parent compound heptane

Explanation:

Chemical compounds are named according to rules in the IUPAC nomenclature.

In naming organic compounds, parts of rules is to find out the parent or root compound. This is determined by finding out the longest carbon chain and then checking if it contains single or multiple bonds.  (that is if it is an alkane- with single bonds, alkene-with double bonds or an alkyne- with triple bonds)

From the question the parent or root name is an alkane containing 6 (Hex-) carbon atoms, while the methyl group is  substituent

(CH₃)-CH₂-CH₂-CH₂-CH₂-CH-CH₃

However the alkyl substituent on carbon 1 increases the the length of the carbon chain to 7 (Hept-) instead of 6. Hence the correct IUPAC nomenclature is heptane and not 1-methylhexane.

True statements for real gases are:

Real gases are gases that do not behave perfectly like ideal gases at all conditions of temperature and pressure. They deviate from ideal behavior under certain conditions, especially at high pressures and low temperatures.

The assumptions of the Kinetic Theory of Gases that make gases to be called ideal gases are not valid under all conditions of temperature and pressure. However, ideal gases serve as a reference point for understanding the behavior of real gases. The molecules of a real gas do occupy some space and have some volume. Therefore, they will cause an increase in pressure compared to ideal gases.

The attractive forces between the molecules of a real gas cause a decrease in the volume of the gas compared to the ideal gas. This results in an increase in pressure.Therefore, statement a is true.

Attractive forces between the molecules of gas become more significant as the temperature is decreased. This will result in deviations from ideal behavior. The attractive forces between the molecules cause them to stay close to each other. Therefore, the size of the molecules is more apparent at high pressures. Thus, statement b is true.

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MgO > CaO > NaF > KCl are the following compounds with decreasing order of lattice energy.

With the help of the people success platform Lattice, leaders can create motivated, cohesive team that foster winning cultures. Launching 360-degree performance review cycles, engagement polls, tracking OKR/goals, getting real-time feedback, and promoting manager 1-on-1 meetings are all made simple with Lattice.

Any orderly configuration of points and objects over a region or in space, such as the geometric configuration of the atoms within a crystal. Fissionable material is arranged geometrically in a nuclear reactor and is also referred to as a "space lattice."

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Answer:

21.0g of CO2

Explanation:

Option c is correct. Specific behavior does chelate ligands possess these ligands can simultaneously occupy two or more sites in a coordination sphere of the metal.

The many donor atoms in the ligand, which can coordinate to the metal center in a way that maximizes their interactions with the metal ion, are what cause this behavior.

Chelating ligands can form more stiff and stable complexes with metals by occupying numerous sites, which can be helpful in a variety of industries like catalysis, medicine, and materials research.

The complex may take on a particular shape and orientation as a result, which may have an impact on its characteristics and responsiveness. The solubility and bioavailability of metal ions in biological systems can also be improved by chelation.

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Complete question

What specific behavior do chelating ligands possess?

a. these ligands occupy only one site in a coordination sphere.

b. these ligands change the oxidation state of the complex by binding to a metal center.

c. these ligands can simultaneously occupy two or more sites in a coordination sphere of the metal.

d. these ligands change the color of the complex by binding the metal in a coordination sphere.

Answer:

6

Explanation:

Answer:

no

Explanation:

Answer:

The answer is B

The multiplicity and entropy for each case and the number of microstates in which molecule X can be distributed among the boxes are a) Multiplicity = 32, Entropy = 1.89 x 10^-22 J/K, b) Multiplicity = 8, Entropy = 1.10 x 10^-22 J/K, and c) Multiplicity = 16, Entropy = 1.47 x 10^-22 J/K

a) |x|x| |x| |x|

The total number of boxes in this case is 5, and the molecule can occupy any of them and the number of microstates in which the molecule can be distributed among the boxes is:

2^5 = 32

To calculate the entropy, we use the Boltzmann formula, where k is the Boltzmann constant (1.38 x 10^-23 J/K) and W is the multiplicity. Therefore, the entropy for this case is:

S = k ln W = k ln 32 = 1.89 x 10^-22 J/K

b) |x| | |x| | |

In this case, there are three boxes, and the molecule can occupy any of them. Therefore, the number of microstates is:

2^3 = 8

S = k ln 8 = 1.10 x 10^-22 J/K

c) |x| |x|x| | |

For this case, there are four boxes, and the molecule can occupy any of them. The number of microstates is:

2^4 = 16

S = k ln 16 = 1.47 x 10^-22 J/K

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The complete question is:

Consider the following three cases of grid boxes. Molecule X can move between and occupy any box. Calculate the multiplicity and entropy for each case.

a) |x|x| |x| |x|

b) |x| | |x| | |

c) |x| |x|x| | |

In the traditional saponification process, a strong base (C) is added to a fat to produce glycerol and soap molecules.

The strong base breaks the ester bonds in the fat, resulting in the formation of glycerol and fatty acid salts, which are soap molecules.

This is a hydrolysis reaction where the ester bonds in the fat or oil are cleaved by the base, resulting in the formation of glycerol (also known as glycerin) and fatty acid salts, which are soap molecules. The process involves the reaction of the base with the triglycerides (fats) present in the fat or oil, leading to the production of soap, which can be used for cleaning and emulsifying properties, and glycerol, which has various applications in cosmetics, food, and pharmaceutical industries.

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