Nicotine is a poisonous, addictive compound found in tobacco. A sample of nicotine contains 6.16 mmol of C, 8.56 mmol of H, and 1.23 mmol of N [1 mmol (1 millimole) = 10⁻³ mol]. What is the empirical formula of nicotine?

The balanced chemical equation is NH₄Cl + NH₄OH = NH₃ + HClH₂O.

What is balanced chemical equation?

A chemical equation is said to be balanced if the same amount of atoms of each type are involved in the reaction on both the reactant and product sides.

As given two compounds formula are NH₄OH, and NH₄HCl.

Add both compounds as follows:

NH₄Cl + NH₄OH

And then form a product.

NH₄Cl + NH₄OH = NH₃ + HClH₂O

How to balance equation?

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Answer:

5.40 moles ( to 3 signif digits )

Explanation:

ONE mole is Avagadro's Number   6.022 x 10^23  atoms/mole

3.25 x 10^24 atoms / (6.022 x10^23 atoms/mole ) = 5.396 moles ~ 5.40 moles

Answer:

10 moles of ammonia could be obtained from a maximum of 5.0 moles of nitrogen​.

Explanation:

The balanced reaction is:

N₂ + 3 H₂ → 2 NH₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Then you can apply the following rule of three: if by reaction stoichiometry 1 mole of nitrogen produces 2 moles of ammonia, 5 moles of nitrogen produces how many moles of ammonia?

\(moles of ammonia=\frac{5 moles of nitrogen*2 moles of ammonia}{1 mole of nitrogen}\)

moles of ammonia= 10

10 moles of ammonia could be obtained from a maximum of 5.0 moles of nitrogen​.

Explanation:

Second answer is the correct one.

Answer:

An atom is a complex arrangement of negatively charged electrons arranged in defined shells about a positively charged nucleus. This nucleus contains most of the atom's mass and is composed of protons and neutrons (except for common hydrogen which has only one proton).

Answer:

Atoms consist of an extremely small, positively charged nucleus in which the protons and neutrons can be found, and is surrounded by a cloud of negatively charged electrons.

Answer:

Solvent

Explanation:

The solute is the substance that is being dissolved, while the solvent is the dissolving medium.

Reactants are the starting substances of a chemical reaction, while products are the substances produced from a reaction.

In a chemical reaction, the starting substances are called reactants, and the substances produced from the reaction are called products. Reactants are the substances that are transformed or changed during the reaction, while products are the substances that are formed as a result of the chemical reaction.

For example, in the chemical reaction where hydrogen gas reacts with oxygen gas to form water, the reactants are hydrogen and oxygen, and the product is water.

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Main answer:ln(T2/T1) +ΔS°mix The change in entropy of the reaction (ΔS°) can be calculated by using the formula, ΔS°= ΔS°(products) - ΔS°(reactants).

Given; moles of hydrogen (H2)=72 moles of oxygen (O2)=44 moles of the mixture=n(H2) + n(O2)=72+44=116The initial temperature= 40°C = 313 KThe final temperature= 60°C = 333 KThe initial pressure= 2 barThe process is isobaric process where pressure is constant and therefore work done is zero.

From the ideal gas equation PV = nRT we can rearrange it to V = nRT/PThe volume of the mixture can be calculated as follows;V= nRT/P= (72 + 44) * 8.31 * 313 / (2 * 10^5)= 6.28 LThe final volume, V2 = 6.28LThe change in temperature is ΔT = 333 - 313 = 20 KThe change in entropy of the mixing process (ΔSmix) can be calculated using the formula;ΔSmix= -nR(xlnx + (1-x)ln(1-x))= -116*8.31[(72/116)ln(72/116)+(44/116)ln(44/116)]= 47.01 J/K.

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The balanced reaction is: 2AgCl(s) + 2NO(g) → 2Ag(s) + Cl^-(aq) + 2NO3^-(aq). The standard cell potential (Eo cell) can be calculated by summing the standard reduction potentials of the half-reactions involved in the reaction.

To calculate Eo cell, we need to consider the reduction half-reactions for the species involved in the reaction. The reduction half-reactions are:

1. Reduction of Ag+ to Ag: Ag+(aq) + e^- → Ag(s) (Eo = +0.80 V)

2. Reduction of NO to NO3^-: NO3^-(aq) + 2H+(aq) + e^- → NO(g) + 2H2O(l) (Eo = +0.96 V)

By adding these two half-reactions, we can obtain the overall balanced redox reaction. Since Ag+ and NO3^- are spectator ions, they do not participate in the reaction. Thus, the balanced redox reaction becomes:

2AgCl(s) + 2NO(g) → 2Ag(s) + 2Cl^-(aq) + 2NO3^-(aq)

The standard cell potential (Eo cell) is the sum of the reduction potentials of the half-reactions:

Eo cell = Eo reduction of Ag+ to Ag + Eo reduction of NO to NO3^-

        = (+0.80 V) + (+0.96 V)

        = +1.76 V

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A colloid consists of a medium called the continuous phase (analogous to the solvent in a solution) and large particles called the dispersed phase (analogous to the solute in a solution).

The continuous phase is the substance in which the dispersed phase is distributed, while the dispersed phase is the particles suspended in the continuous phase.

This unique structure allows colloids to exhibit properties different from those of true solutions, such as the Tyndall effect, in which light is scattered by the suspended particles.

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Answer

AlBr₃ is the limiting reactant

Explanation

Mass of AlBr₃ = 23.45 g

Mole of AlBr₃ = Mass/molar mass = 23.46 g/266.69 g/mol = 0.08797 mol

Mass of Na₂O = 34.57 g

So mole of Na₂O = mass/molar mass = 34.57 g/61.9789 g/mol = 0.5578 mol

Mole ratio of AlBr₃ to Na₂O = (0.08797/0.08797) : (0.05578/0.08797) = 1:6

To know the limiting reactant, write a chemical equation for the reaction and compare the reactant mole ratio in the equation with the mole ratio above.

2AlBr₃ + 3 Na₂O -----> Al₂O₃ + 6NaBr

Mole ratio in the equation = 2:3

Comparing the mole ratio, AlBr₃ will be the first to be completely consumed.

Therefore, AlBr₃ is the limiting reactant

Explanation:

2..0×1024 molecules c2 h6

Answer:

Because

Explanation:

A orange is called a orange because it is the color orange

as well as orange is orange because of the orange

The given reaction is photosynthesis. The Six molecules of carbon dioxide are involved in this reaction.

Photosynthesis is the process of the formation of sugar from carbon dioxide and water.

1 molecule of sugar is produced in the reaction.

The Six molecules of carbon dioxide are involved in this reaction.

There are six molecules of carbon on the left-hand side of the equation.

There are six molecules of carbon on the right-hand side of the equation.

There are Twelve molecules of hydrogen on the left-hand side.

There are 12 molecules of hydrogen on the right-hand side.

There are Eighteen oxygen molecules on the left hand side.

There are eighteen oxygen molecules on the right hand side.

Therefore, The given reaction is photosynthesis. The Six molecules of carbon dioxide are involved in this reaction.

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Answer:

The volume that a 200 g gold sample would have is 10.36 mL.

Step-by-step explanation:

In this case it is known that the density of gold is 19.3 g / mL. This indicates that in 1 mL there are 19.3 g. Then the following rule of three can be applied: if 19.3 g is contained in 1 mL, how much volume is 200 g of gold?

volume= 10.36 mL

the cd 2 ion forms a tetrahedral complex with bromide ions Kf = 5.01×103  Formation equilibrium of [CdBr4]2- is  Cd2+(aq) + 4Br-(aq) <-------> CdBr42-(aq)  Dissociation Equilibrium of CdBr42- is  CdBr42-(aq.

What is the Difference Between Square Planar and Tetrahedral Complexes?

Tetrahedral complexes are coordination complexes that have a central metal atom surrounded by four constituent atoms in corners of a tetrahedron.

The structure of square planar and tetrahedral complexes, as well as the characteristics of transition metal complexes, are all well described by crystal field theory. The square planar complexes have a four-tiered crystal field diagram, whereas the tetrahedral complexes have a two-tiered crystal field diagram, which is the main distinction between the two types of complexes.

Additionally, transition metals with electron configurations that finish in d8 have a propensity to create square planar complexes, whereas metals with d0 and d10 have a propensity to form tetrahedral complexes.

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answer

Please add answer choice

Explanation:

Answer:

Explanation:

.........................................................      

To find derivative symmetry operation through interaction of two symmetries, multiply the matrices for the two symmetries together, in the order that corresponds to the order in which we apply them. Here, we applied S₁ followed by S₂, so we multiplied S₂ times S₁. Resulting matrix corresponds to the composite symmetry.

Let's start by defining the two symmetries we are working with. We will call them S₁ and S₂, and we will represent them using matrices. The matrix for S₁ is:

[ 0  1 ]
[ 1  0 ]

The matrix for S₂ is:

[ 1  0 ]
[ 0 -1 ]

Now, to find the derivative symmetry operation, we need to multiply these two matrices together. However, we need to be careful about the order of multiplication, since matrix multiplication is not commutative. That is, S₁ times S₂ is not the same as S₂ times S₁.

To determine the correct order of multiplication, we need to consider how the two symmetries interact. When we apply S₁ followed by S₂, we first reflect the object across the line y=x (which is what S₁ does), and then we reflect it across the x-axis (which is what S₂ does). If we think about it, this is the same as reflecting the object across the line y=-x (which is a diagonal line that goes through the origin). So, we can represent this composite symmetry as a single matrix that corresponds to the reflection across y=-x.

To find this matrix, we simply multiply the matrices for S₁ and S₂ together, in the order S₂ times S₁. Here's how:

[ 1  0 ]   [ 0  1 ]   [ 0  1 ]
[ 0 -1 ] x [ 1  0 ] = [-1  0 ]

So, the matrix for the composite symmetry (which is the derivative symmetry operation) is:

[ 0  1 ]
[-1  0 ]

This matrix corresponds to the reflection across the line y=-x.

In summary, to find the derivative symmetry operation through interaction of two symmetries, we need to multiply the matrices for the two symmetries together, in the order that corresponds to the order in which we apply them. In this case, we applied S₁ followed by S₂, so we multiplied S₂ times S₁. The resulting matrix corresponds to the composite symmetry, which is the derivative symmetry operation.

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1) Balance the chemical equation.

Step 1: Assign oxidation numbers

PbO2: Pb (+4) and O (-2)

Mn2+: Mn (+2)

Pb2+: Pb (+2)

MnO4-: Mn (+7) and O (-2)

Step 2: Figure out what's being reduced and what's being oxidized.

Mn has been oxidized. It changed from (+2) to (+7)

Pb has been reduced. It changed from (+4) to (+2)

Step 3: Write half-reaction

Oxidation half-reaction

Reduction half-reaction

Step 4: Balance all elements EXCEPT for hydrogen and oxygen

Oxidation half-reaction

Reduction half-reaction

Step 5: Balance oxygens. We do so by adding water molecules to the half-reactions as needed.

Oxidation half-reaction

Reduction half-reaction

Step 6: Balance hydrogens. We do so by adding protons (H+) to the half-reactions as needed.

Oxidation half-reaction

Reduction half-reaction

Step 7: Balance charges. We do so by adding electrons

Oxidation half-reaction

Reduction half-reaction

Step 8: Multiply half-reactions to make the number of electrons equal.

Oxidation half-reaction.

New oxidation half-reaction.

Reduction half-reaction

New reduction half-reaction

Step 9: Cancel electrons and combine the half-reactions

Overall reaction

Step 10: Balance the chemical equation by reducing the number of water molecules and protons.

Overall reaction

2) The balanced chemical equation

Overall reaction

.

Answer:

b

Explanation:

edge 2021

According to the concept of conduction,heat  flows from faster molecules to slower molecules when they collide.

Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.

In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules .

There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:

1) heat conduction

2) electrical conduction

3)sound conduction

Heat is transferred from faster to slower molecules when they collide , thus the correct option is that heat flows from faster molecules to slower molecules when they collide.

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Explanation:

Good question!

When you react an acid with a base,the pH of the product is determined by the concentrations of the reactants (the acid and the base)

If both reactants (acid and base) are strong,the pH of the product is 7

If the acid is stronger than the base,the pH of the product will be less than 7

If the base is stronger,the pH of the product will be greater than 7

I hope this helps

The correct option concerning the concealment of assets during or in contemplation of a bankruptcy is often used in a planned bankruptcy.

The correct option concerning the concealment of assets during or in contemplation of a bankruptcy is often used in a planned bankruptcy. This is a common tactic used by individuals or companies who plan to file for bankruptcy but want to protect their assets from being seized to repay their creditors. The process involves hiding or transferring ownership of assets to a third party or concealing them altogether. This is illegal and can lead to severe consequences, including fines, penalties, and even criminal charges. It is crucial to note that bankruptcy laws are designed to protect honest debtors and not those who seek to defraud their creditors. Thus, if a court discovers any attempts at concealing assets, it can deny the bankruptcy discharge and revoke any protections offered by the bankruptcy laws. In conclusion, concealing assets during bankruptcy is a fraudulent practice that can lead to severe legal repercussions, and it is never recommended.

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In Chemistry, we always have to balance the equations, in many topics within the subject of Chemistry, it is required to do that, this is because we have to account for every atom in the reaction, on both sides, reactant and product, the same number of atoms that are on the reactants side must be on the products side. Therefore, the best answer for this question will be letter D

The phase of energy metabolism that often begins with the sight, the smell, or even the thought of food is the cephalic phase.

The cephalic phase is the initial stage of digestion and energy metabolism that occurs before food even enters the body. It involves the sensory stimulation of the brain through visual, olfactory, and cognitive cues associated with food.

When we see, smell, or think about food, our brain sends signals to the digestive system, triggering the release of enzymes and hormones that prepare the body for food intake. This phase includes processes such as increased salivation, gastric acid secretion, and pancreatic enzyme release.

The cephalic phase plays a crucial role in preparing the body for efficient nutrient digestion and absorption, ultimately contributing to overall energy metabolism.

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These gases, such as HCl, NH₃, and H₂O, have measurable attractive forces between the particles.

Gases are typically composed of individual particles, such as molecules or atoms, that are in constant motion and exhibit minimal intermolecular interactions. However, certain gases, including hydrogen chloride (HCl), ammonia (NH₃), and water (H₂O), deviate from this behavior due to the presence of measurable attractive forces between their particles.

In these cases, the attractive forces can arise from various intermolecular interactions, such as dipole-dipole interactions or hydrogen bonding. For example, HCl molecules possess a polar covalent bond, resulting in a dipole moment. The positive end of one molecule is attracted to the negative end of another, creating intermolecular attractions.

Similarly, NH₃ and H₂O molecules have polar bonds and can form hydrogen bonds. Hydrogen bonding involves the attraction between a hydrogen atom bonded to an electronegative atom (such as nitrogen or oxygen) and a lone pair of electrons on a neighboring molecule.

These attractive forces contribute to deviations from ideal gas behavior, resulting in properties like higher boiling points and greater intermolecular cohesion. The measurement and understanding of these attractive forces are crucial for studying the behavior of gases under various conditions and have implications in fields such as chemistry, physics, and biology.

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The volume of 0.175M sodium sulfate solution that is necessary to completely react with 35.0 mL of 0.112M silver nitrate is 22.4mL.

Molarity is the concentration of a substance in solution, expressed as the number moles of solute per litre of solution.

The volume of a solution can be calculated using the following expression:

CaVa = CbVb

Where;

According to this question, 0.175M sodium sulfate solution completely reacts with 35.0 mL of 0.112M silver nitrate. The volume required for this reaction to occur can be calculated as follows:

0.175 × Va = 35 × 0.112

0.175Va = 3.92

Va = 3.92/0.175

Va = 22.4mL

Therefore, 22.4mL is the volume of the sodium sulfate needed.

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Dalton's Atomic theory was Atom is an indivisible fundamental particle but Bohrs theory contradict it,

Atoms contain smaller particles: protons, neutrons, and electrons.