0.110 mol of octane is allowed to react with 0.750 mol of oxygen, which is the limiting reactant? 2 C8H18 + 25 O2 ----> 16 CO2 + 18 H2O.

If you draw the table of the Hess law, you can use that table to obtain the enthalpy of reaction

A table called the "Hess's law table" can be created to depict how Hess's law is used. The reactants, intermediates, products, and related enthalpy changes (H) of each reaction that takes place during a chemical reaction are listed in the table.

Hess's law indicates that you can add the enthalpy changes of the separate reactions to get the total reaction's enthalpy change (H). By eliminating common species between neighboring reactions in the table, the overall reaction is achieved.

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The change in Gibbs free energy between the isomers is primarily due to a difference in entropy.

Gibbs free energy (ΔG) is a measure of how much energy a chemical reaction has available to do work. Gibbs free energy is represented by ΔG = ΔH - TΔS, where ΔH is the change in enthalpy, T is the temperature in Kelvin, and ΔS is the change in entropy. The difference in enthalpy between the isomers is due to a change in bond structure between each isomer, as the three forms do not have the same enthalpy.

Because the molecules have different bond structures, the enthalpies of each isomer will vary, and changing between isomers would require flexing some of the bonds, which will alter their enthalpies. The primary cause of the change in Gibbs free energy between isomers is due to a difference in entropy.

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Answer:

its d, forming a hypothesis is always one of the first things you do, and d is the best answer from these 4

Answer:

D. A scientist should form a hypothesis, then conduct an experiment

Explanation:

From periodic table:  

Zn = 65.38    gm/mole         X 3 =196.14  

P= 30.974

O = 15.999                           X 4 =63.996

Total mole wt = 291.11  gm     of which  196.14 is Zn

196.14 / 291.11 x 100% = 67% Zn

(NOTE that the sample mass of 25.5 g is irrelevant)

In the preceding equation, 6.67 moles of boric acid (\(H_3BO_3\)) will react to generate 10 moles of water (\(H_2O\)).

To determine the number of moles of boric acid that react in the equation to produce 10 moles of water, we need to examine the balanced chemical equation and use stoichiometry.

1. Begin by examining the balanced chemical equation for the reaction involving boric acid and water. Let's assume the equation is:

  \(3H_2O\) + \(3H_2O\) -> \(B_2O_3\) + \(6H_2O\)

2. From the balanced equation, we can see that 2 moles of boric acid (H3BO3) react with 3 moles of water (\(H_2O\)) to produce 6 moles of water (\(H_2O\)).

3. Use the given information that 10 moles of water (\(H_2O\)) are produced. Since the stoichiometric ratio between boric acid and water is 2:3, we can set up a proportion to find the number of moles of boric acid:

  2 moles \(H_3BO_3\) / 3 moles \(H_2O\) = x moles \(H_3BO_3\) / 10 moles \(H_2O\)

4. Cross-multiply and solve for x:

  (2 moles \(H_3BO_3\))(10 moles \(H_2O\)) = (3 moles \(H_2O\))(x moles \(H_3BO_3\))

  20 moles \(H_2O\) = 3x moles \(H_3BO_3\)

5. Divide both sides of the equation by 3 to isolate x:

  x moles \(H_3BO_3\) = (20 moles \(H_2O\)) / 3

6. Calculate the value of x:

  x moles \(H_3BO_3\) ≈ 6.67 moles \(H_3BO_3\)

Therefore, approximately 6.67 moles of boric acid (\(H_3BO_3\)) will react to produce 10 moles of water (\(H_2O\)) in the given equation.

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Answer:

Gas – In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles.

Explanation:hopes this helps:)

Answer: strike-slip fault

Explanation:

Answer:

C; strike split

Explanation:

Answer:

KOH + H2SO4 --> K2SO4 + H2O

Answer:

The Bohr atomic model did not make correct predictions of large- sized atoms and provided sufficient information only for smaller atoms.

The kinds of the solids are;

SiO2 - Covalent network solid

C6H12O6 - Covalent solid

KI - Ionic solid

A covalent network solid, often referred to as a network covalent solid or just a network solid, is a category of solid material in which the atoms that make up the material are strongly covalently linked to one another, forming an extended three-dimensional network structure.

Covalent network solids are kept together by a dense network of covalent bonds, as opposed to molecular or ionic solids, which are held together by weaker intermolecular forces or ionic interactions, respectively.

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Answer:

Their weight.

Explanation:

Weight is the measurement of gravity pushing you down, so with less gravity there would be less weight.

The astronauts expect their weight to be different on the Moon

Weight is simply defined as the gravitational pull of the earth on an object. It is measured in Newton.

The weight of an object varies with location because of gravity.

The weight of an object is related to it's mass according to the following equation:

Weight = mass × Acceleration due to gravity

Since the gravity of the Moon is lesser than that of the Eearth, the astronauts certainly knew that their weight will be different on the Moon.

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Newton's optics experiment observation and intervention. Newton made observations using the principle of light passing through prisms and the rays that were transmitted through them. It was revealed that light has a variety of properties and features.

The key experiment performed by Newton was reflecting light onto a piece of wood with a small hole drilled into it. He was able to create a pure-colored light beam in this way. He was able to demonstrate, for instance, that blue light produced solely blue light when it was refracted through a second prism.

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The temperature of the gas sample is approximately 86.59 K.

To find the temperature of the gas sample, we can use the ideal gas law equation, which states that the product of pressure (P) and volume (V) is directly proportional to the number of moles (n) of the gas and the temperature (T), given by the equation PV = nRT.

Here, we are given the pressure (P) as 2.06 atm, the volume (V) as 27.83 L, and the number of moles (n) as 8.05 mol. We need to solve for the temperature (T).

R is the ideal gas constant, which has a value of 0.0821 L·atm/(mol·K) under the given units.

Let's substitute the known values into the equation and solve for T:

PV = nRT (2.06 atm)(27.83 L) = (8.05 mol)(0.0821 L·atm/(mol·K))T

Simplifying the equation:

57.2162 atm·L = 0.661205 mol·K·T

Now, we can solve for T by dividing both sides of the equation by (0.661205 mol·K):

T = (57.2162 atm·L) / (0.661205 mol·K) ≈ 86.59 K

Therefore, the temperature of the gas sample is approximately 86.59 Kelvin.

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Option( A) is the correct answer.

A chemical reaction in which energy is released is exergonic.

Exergonic reactions are defined as chemical reactions in which the change in free energy is negative in chemical thermodynamics (there is a net release of free energy). If the system is closed and the end and beginning temperatures match, this suggests a spontaneous response. The Gibbs free energy is employed for processes that occur in a closed system at constant pressure and temperature, whereas the Helmholtz energy is significant for processes that occur at constant volume and temperature. The second rule of thermodynamics states that any reaction that takes place at a steady temperature without the addition of electrical or photon energy is exergonic. Cellular respiration is one illustration.

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Answer:

4

Explanation: it's a carbon atom right....soo it'll form 4 bonds(single)

An atom can form 4 single covalent bonds is carbon with two electron shell.

The bonds are defined as a strong bond that binds atoms, ions, or molecules together and promotes the production of molecules.

There are three types of bonds.

Covalent bonds are defined as the bond formed by sharing of electrons with each other.

Covalent bonding is a stable equilibrium of the attractive and repulsive forces between two atoms that occurs when they share electrons. Bonding pairs or sharing pairs are other names for these electron pairs.

It can also be defined as a type of chemical link where atoms share electrons to create electron pairs.

Covalent bonds  has low melting point, boiling point, enthalpy of fusion and enthalpy of vaporization.

Thus, an atom can form 4 single covalent bonds is carbon with two electron shell.

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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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The number of moles of the cyclopropane that remains after 1.00 s is  6.1 * 10^-4 M.

By the use of the equation of the first order reaction, we can be able to find out the concentration at a given time.

The equation of the first order reaction can be written as;

ln[A] = ln[Ao] - kt

[A] = Concentration at time t

[Ao] = Initial concentration

k = rate constant

t = time

Then;

[A] = e^ln[Ao] - kt

[A] = e^ln6.00 - (9.2 * 1)

[A] = 6.1 * 10^-4 M

The amount of the cyclopropane left is  6.1 * 10^-4 M.

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Answer:

Explanation:

Xenocryst is a crystal in an igneous rock that is not derived from the original magma. This means that its origin is from a rock so itʻll be something thats on a rock that has a crystal base.

i hope this helps!

Answer:

The molar solubility of AgI in the 1.0 M NH3 solution, which we calculate by molar solubility of AgI (silver iodide) in a 1.0 M NH3 (ammonia) solution, we can use the concept of complex formation and the solubility product constant (Ksp) of AgI.

Explanation:

The balanced equation for the formation of the silver-ammonia complex is as follows:

AgI (s) + 2 NH3 (aq) → [Ag(NH3)2]+ (aq) + I- (aq)

The Ksp expression for AgI can be written as:

Ksp = [Ag(NH3)2]+ * [I-]

Since we are given that the solution is 1.0 M NH3, we can assume that the concentration of NH3 remains constant. Therefore, we can represent the concentration of the silver-ammonia complex, [Ag(NH3)2]+, as x (in moles per liter).

The concentration of I- will be twice that of the silver-ammonia complex, as shown in the balanced equation. So, the concentration of I- is 2x (in moles per liter).

Now, substituting these values into the Ksp expression:

Ksp = x * 2x^2

Since Ksp for AgI is 1.5 x 10^-16 at 25°C, we can set up the equation:

1.5 x 10^-16 = 2x^3

Solving for x:

2x^3 = 1.5 x 10^-16

x^3 = (1.5 x 10^-16) / 2

x = [(1.5 x 10^-16) / 2]^(1/3)

Calculating this expression will give us the molar solubility of AgI in the 1.0 M NH3 solution.

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Answer: The most likely answer is weathering.

Explanation: When weathering accurs it breaks rocks and other big minerals into little tiny sediments creating soil.

Ernest Rutherford, a New Zealand physicist, conducted the gold foil experiment and discovered that the atom has a positively charged nucleus.

In 1911, he conducted an experiment in which he fired alpha particles at a thin sheet of gold foil. The majority of the particles went straight through the gold foil, but a small percentage of the particles bounced back. He discovered that the bouncing back was caused by a small, positively charged nucleus at the center of the atom. Rutherford's experiment was crucial to our understanding of the structure of the atom. Prior to his experiment, the prevailing model of the atom was that it was a solid, indivisible sphere.

However, Rutherford's experiment showed that the atom was mostly empty space, with a positively charged nucleus at its center. This discovery paved the way for future research into atomic structure and helped to lay the foundation for the development of nuclear physics.

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Option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

The long-run equilibrium condition for perfect competition is that price (P) is equal to average total cost (ATC), which is also equal to marginal cost (MC), and marginal revenue (MR).

Option (d), P=ATC=MR=MC, best represents the long-run equilibrium condition for perfect competition. In perfect competition, firms operate at the minimum point of their average total cost curve, where price equals both average total cost and marginal cost. This condition ensures that firms are earning zero economic profit and are producing at an efficient level.

In the long run, if firms are earning economic profit, new firms will enter the market, increasing competition and driving prices down. Conversely, if firms are experiencing losses, some firms may exit the market, reducing competition and causing prices to rise. This process continues until firms reach a state where price equals average total cost, marginal cost, and marginal revenue, ensuring a long-run equilibrium.

Therefore, option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

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Answer:

iron+flourine.............iron flouride

Fe+F2.............FeF3

the above reaction is not balanced

now to balance this reaction

2Fe+3F2...........2FeF3

now this reaction is balanced

The balanced equation is: 2Fe + 3F2 ⇒ 2FeF3

A chemical equation needs to be balanced if you want to make the wide variety of the atoms of the reactants equal to the variety of the atoms of the goods.

Given,

Iron + fluorine ⇒ Iron Flouride

Fe + F2 ⇒ FeF3

Now to balance this reaction:

2Fe + 3F2  ⇒ 2FeF3

This reaction is balanced.

This medicine is a mixture manufactured from nutrients, iron, and fluoride. it's miles utilized in infants and youngsters to deal with or prevent deficiency because of terrible weight loss programs or low tiers of fluoride in drinking water and other sources.

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Answer:

ok

Explanation:

Answer:

Yes it is balanced

Explanation:

You can check by finding the total of each element on both sides so:

Left Hand Side :

Carbons: 6

Oxygens: 6x2 (carbon dioxide) and 6 (water) so there are 18

Hydrogens: 6x2 (carbon dioxide) so 12

Right Hand Side:

Carbons: 6

Oxygens: 6 (glucose) then 6x2 (oxygen) so there are 18

Hydrogens: 12

Answer: hehe its kirishima here and the various types of fossil fuels are energy provision coal, oil and natural gas. Coal is a solid fossil fuel formed over millions of years by decay of land vegetation.

haha hope this helped

-yours truly red riot