One reaction used to produce small quantities of pure H₂ is CH₃OH(g) ⇄ CO(g) + 2H₂(g) (c) What is the significance of the different values of ΔG°?

The Mid-Atlantic Ridge runs through Iceland's middle. The tectonic plates of North America and Eurasia meet at this point. The vast chunks that make up planet Earth's mantle are known as tectonic plates.

And along Mid-Atlantic Crest, where the American American and Eurasian continental plates are separating from one another, runs this caldera in Iceland. The largest lake in Iceland, Lake Thingvallavatn, is to the right and was created as a result of vulcanism near the rift.

Iceland is being forced apart by 2 cm annually as the two plates of earth which converge in the Mid Atlantic, the Tectonic plate and also the North American plate, are constantly moving apart from one another. This implies that new regions of Iceland are constantly forming.

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The change that wilL occur is that the the reaction shifts to the right (products) to produce fewer moles of gas.

option C is correct.

The balanced equation is:

\(51.8 kJ + H_2(g) + 12(g) = 2HI(g)\)

From the left, there are 1 mole of H2 gas and 1 mole of I2 gas, which gives a total of 2 moles of gas.

In the right,  there are 2 moles of HI gas.

We can tell that there are more moles of gas on the left side than on the right side by comparing the amount of moles on each side.

According to Le Chatelier's principle, a decrease in volume will favor the side with fewer moles of gas.

In our scenario, the reaction will shift to the right  to produce fewer moles of gas.

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Answer:

there is no change

Explanation:

acellus correct

Answer:

Answer Option A) To attain a noble-gas electron configuration.

Explanation:

Correct answer from test

Taking into account the definition of covalent bond and octet rule, the correct answer is option A.  Atoms share electrons in covalent bonds to achieve a noble gas electron configuration.

The covalent bond is the chemical bond that occurs between atoms of non-metallic elements. These atoms have many electrons at their outermost level and have a tendency to share them to acquire the stability of the noble gas electronic structure. In this way a molecule is formed.

The tendency of the elements to reach a stable configuration is known as the octet rule. For this, the octet rule explains that there must be eight electrons in their last energy levels, thus acquiring the structure of a noble gas.

So, a covalent bond is a force that joins two atoms of non-metallic elements to form a molecule in order to comply with the octet rule.

Finally, the correct answer is option A.  Atoms share electrons in covalent bonds to achieve a noble gas electron configuration.

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The amount of diamine silver chloride = 8.87 g

Given

10 g AgCl

1.00 L of 0.100 M NH3

Required

the amount of diamine silver

Reaction

AgCl + 2 NH₃ → [Ag(NH₃)₂]Cl

mol AgCl :

= mass : MW

= 10 g : 143,32 g/mol

= 0.0698

mol NH₃ :

= M x V

= 0.1 x 1

= 0.1

NH₃ as a limiting reactant

mol [Ag(NH₃)₂]Cl based on NH₃ :

= 1/2 x mol NH₃

= 1/2 x 0.1

= 0.05

Mass diamine silver :

= 0.05 x  177.3822 g/mol

= 8.87 g

Bleach can be corrosive to metals and plastics and can cause skin irritation and eye damage.

D. eye damage

Bleach is a highly corrosive substance that can cause harm to various materials and surfaces, as well as to the human body. Here's a more detailed explanation of the potential effects of bleach:

1. Corrosive to metals and plastics: Bleach contains chemicals, such as sodium hypochlorite, that can react with metals and plastics, leading to corrosion or degradation. When in contact with metals, bleach can cause oxidation or rusting, which can weaken or damage the metal surfaces. Similarly, bleach can degrade certain types of plastics, causing them to become brittle, discolored, or even dissolve.

2. Skin irritation: Direct contact of bleach with the skin can cause irritation and inflammation. The corrosive nature of bleach can disrupt the protective barrier of the skin, leading to redness, itching, burning sensations, and even chemical burns. Prolonged or repeated exposure to bleach on the skin can further exacerbate the irritation and may require medical attention.

3. Eye damage: One of the most significant risks associated with bleach is its potential to cause severe eye damage. If bleach comes into contact with the eyes, it can cause immediate pain, redness, and irritation. The corrosive properties of bleach can lead to chemical burns on the delicate tissues of the eyes, potentially resulting in vision impairment or permanent damage if not promptly treated. It is crucial to rinse the eyes thoroughly with water and seek immediate medical attention in case of bleach exposure to the eyes.

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When light strikes the chlorophyll molecule, it excites the electrons present in the pigment. This is the process that kicks off photosynthesis, the conversion of light energy into chemical energy in plants.

Chlorophyll molecules are found in the thylakoid membranes of plant chloroplasts and are the site of light-dependent reactions in photosynthesis.

The pigment absorbs photons of light energy and converts it into chemical energy that is used to power the process of photosynthesis.

The excited electrons are used to generate ATP and NADPH, which are then used to synthesize glucose from CO2 and H2O in the process of the Calvin cycle.

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The volume 0.175 molar NaOH required to titrate 25 ml of 0.350 molar acetic acid to the equivalence point is 50 ml.

Equivalence point in a titration is the point at which the titrant completely reacted with the analyte in the perfect stoichiometric ratio. Equivalence point can be identified using an indicator color change.

If we have M1 molar solution in V1 volume titrated with M2 molar solution of V2 volume, then we can write it as:

M1V1 = M2V2.

Here, the volume and molarity of acetic acid is 25 ml and 0.350 molar. The volume required for 0.175 m NaOH for titration is :

volume of NaOH = (volume of acetic acid × molarity) / molarity of NaOH

                             = (0.350 × 25 ml) /0.175

                             = 50 ml.

Therefore, the volume of NaOH required in this titration is  50 ml.

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You should add 0.089 mol of silver fluoride to the 500 ml volumetric flask to get the desired concentration.

To make an aqueous solution of 0.178 M silver fluoride, you need to add a certain amount of silver fluoride to a known volume of water.

Since you want to make a 500 ml solution and the desired concentration is 0.178 M, you can use the formula:

molarity = moles of solute/liters of solution

Rearranging this equation to solve for moles of solute:

moles of solute = molarity x liters of solution

Therefore, to make a 0.178 M solution, you need to add:

moles of solute = (0.178 mol/L) x (0.5 L) = 0.089 mol

So you should add 0.089 mol of silver fluoride to the 500 ml volumetric flask to get the desired concentration.

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Answer:

1 atom of carbon on the reactant side (CH₄ is methane, 1 carbon, 4 hydrogen).

1 atom of carbon on product side (Law of Conservation of energy proves this).

4 hydrogen on reactant side (CH₄ is methane, 1 carbon, 4 hydrogen).

4 hydrogen on product side (Again, the Law of Conservation of energy proves this)

4 oxygen atom on the reactant side (2O₂ means two diatomic molecules, or two oxygen molecules of 2 atoms each).

4 oxygen atoms on the product side (Law of Conservation of energy).

2 molecules of oxygen on the reactant side.

2 molecules of water on the product side

Yes, the chemical equation is balanced. The amount of atoms is the constant on both the reactant and product side.

A Ionic bond is chemical bond between two oppositely charged ions because of the transfer of valence electrons between them.

A covalent bond is a chemical bond in which two or more atoms share electrons between them. They can also form polar covalent bond or non-polar covalent bonds (Although that depends on the electronegativities of the atom).

The bond of a carbon dioxide molecule is covalent bond (Polar covalent bond if you've learned that yet)

Potassium Fluoride (KFl) form an ionic bond.

2Al₂O₃ --> 4Al + 3O₂

A reducing agent loses electrons while and oxidizing agent gains electrons.

In an endothermic reaction, the total bond energy in the reactants is greater than the bond energy of products so energy is absorbed by the reaction. (For an endothermic reaction, more energy needs to be absorbed than released).

Answer:

As the pressure increases the boiling point increases.

The correct answer is cerium 141,911amu.

A unit atomic mass is defined as one-twelfth of the mass of a single carbon-12 atom. The atomic mass of an element is the atomic mass. Average atomic mass is the weighted average of the atomic masses of all isotopes of that element.

To answer this question, a formula is written to calculate the average atomic mass of cerium. (135.90714 amu × 0.0019 )+ ( 137.90599 amu × 0.0025 )+ ( 139.90543 amu * 0.8843 )+(Ce−142 × 0.1113)

= 140.116

Solving the equation for Ce-142 gives an atomic weight of 141.911 amu.

The correct answer is 141,911 amu. 

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Answer:

117-

Explanation:

We know that the atomic number of platina is 78 and the atomic average mass number is about 195. Neutron = 195 – 78 = 117. Therefore, a platinum atom has one hundred seventeen neutrons. Based on the atomic number, mass number, and neutron number of the element, three things can be considered.

Hope this helped.

Answer:

1.This answer would be option A.

2. I think that would be 1350

Explanation:

Answer:It has a specific role, as well as a variety of functions for the benefit of our society: creating new knowledge, improving education, and increasing the quality of our lives. Science must respond to societal needs and global challenges.

Explanation:Science is valued by society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards. Finding a cure for cancer and a clean form of energy are just two topical examples. Education could become the most important application of science in the next decades.

Answer: yes

Explanation: no

1H NMR spectroscopy can be used to distinguish between isomers of a given molecular formula based on the differences in their chemical environments and the resulting shifts in their NMR signals.

In the case of compounds F, G, and K, which all have the molecular formula C13H18O, there are several ways in which their 1H NMR spectra could differ.

Firstly, the number of unique proton environments in each compound can differ, leading to a difference in the number of signals observed in their respective spectra. For example, if compound F contains a methyl group, a methylene group, and an isolated proton, it would exhibit three distinct signals in its 1H NMR spectrum, whereas if compound G contains a cyclohexane ring with no substituents, it would only exhibit a single signal corresponding to the equivalent protons in the ring.

Secondly, the chemical shifts of the protons in each compound can differ due to differences in the electronic environment around them. For example, a proton in a more electronegative environment will experience a downfield shift, whereas a proton in a more shielded environment will experience an upfield shift. Therefore, compounds F, G, and K could exhibit different chemical shifts for their equivalent protons, allowing for differentiation between them.

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1H NMR spectroscopy can be used to distinguish between isomers of a given molecular formula based on the differences in their chemical environments and the resulting shifts in their NMR signals.

In the case of compounds F, G, and K, which all have the molecular formula C13H18O, there are several ways in which their 1H NMR spectra could differ.

Firstly, the number of unique proton environments in each compound can differ, leading to a difference in the number of signals observed in their respective spectra. For example, if compound F contains a methyl group, a methylene group, and an isolated proton, it would exhibit three distinct signals in its 1H NMR spectrum, whereas if compound G contains a cyclohexane ring with no substituents, it would only exhibit a single signal corresponding to the equivalent protons in the ring.

Secondly, the chemical shifts of the protons in each compound can differ due to differences in the electronic environment around them. For example, a proton in a more electronegative environment will experience a downfield shift, whereas a proton in a more shielded environment will experience an upfield shift. Therefore, compounds F, G, and K could exhibit different chemical shifts for their equivalent protons, allowing for differentiation between them.

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Total pressure = 4.9 atm

Partial pressure of neon =  3.4 atm

Partial pressure of oxygen = 1.5 atm

We know that the partial pressure could be obtained as the product of the mole fraction and the total pressure thus we have to obtain the total pressure by the use of the partial pressures.

For the number of moles of helium;

P = 101.3 kPa or 0.99 atm

T =  25ºC or 298 K

V =  27 L

n = PV/RT = 0.99 atm * 27 L/0.082 *  298 K = 26.73/24.44 = 1.1 moles

Number of moles of oxygen

P = 101.3 kPa or 0.99 atm

T =  25ºC or 298 K

V =  12 L

n = PV/RT = 0.99 atm * 12 L/0.082 *  298 K =11.88 /24.44 = 0.5 moles

Total number of moles = 1.1 moles + 0.5 moles = 1.6 moles

Total pressure is obtained from;

nRT/V

= 1.6 moles * 0.082 * 298/8

= 4.9 atm

Partial pressure of neon = 1.1 moles/1.6 moles * 4.9 atm = 3.4 atm

Partial pressure of oxygen = 0.5 moles/1.6 moles * 4.9 atm = 1.5 atm

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The velocity profile of an incompressible fluid flowing down a vertical cylindrical pipe can be derived using the Navier-Stokes equation under certain assumptions. With a pipe length of 6 m, diameter of 5 cm, friction factor of 0.01, and a constant flow rate of 3 m³/hr, we can calculate the pressure drop using the given information.

a) To derive the velocity profile of the fluid in the pipe, we can start with the Navier-Stokes equation, which describes the motion of a fluid. Under the assumption of laminar flow and incompressibility, the equation simplifies to:

dP/dz = (32μLQ) / (πR^4)

where dP/dz is the pressure gradient, μ is the dynamic viscosity of the fluid, L is the pipe length, Q is the volumetric flow rate, and R is the pipe radius. By integrating this equation, we can obtain the velocity profile of the fluid.

b) To calculate the pressure drop, we need to convert the flow rate from m³/hr to m³/s. Given that 1 m³/hr is equal to 1/3600 m³/s, the flow rate becomes Q = 3 / 3600 m³/s. By substituting the values of μ, L, Q, and R into the derived equation, we can calculate the pressure gradient. Finally, the pressure drop can be obtained by multiplying the pressure gradient by the length of the pipe (6 m).

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Combustion is a chemical change that can produce heat and light through burning. This energy is released in the form of heat and light.

Combustion is the process of burning, and it is a type of chemical change. A chemical change is a process that results in the formation of new substances. In combustion, the reactants (usually a fuel and oxygen) combine to form new substances (carbon dioxide, water vapor, and other combustion products).The energy released during combustion can manifest itself in the form of heat and light. This is because the reaction is exothermic, meaning it releases energy. This energy is released in the form of heat and light.

Combustion is a chemical change that involves the reaction of a fuel with oxygen to produce carbon dioxide, water vapor, and other combustion products. This reaction is exothermic, meaning it releases energy in the form of heat and light. The heat and light produced by combustion are what make it such an important process in our lives. For example, combustion is used in engines to power vehicles and generate electricity in power plants.

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Explanation:

the difference between a nuclear bomb and a thermonuclear bomb is that :

A nuclear bomb derives it's destructive force from nuclear reaction. That is,fission reaction, fusion reaction or both.

While thermonuclear bomb derives it's own force from a chain reaction in which isotopes of hydrogen combines under extremely high temperature to form helium under a process known as nuclear fusion.

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Answer:

neon gas is the closest noble gas to magnesium ( mg ) on the periodic table.

Explanation:

hope this answer will help you

Answer:

a. proton and an electron

Answer:

wheresthepicture.-

Explanation:

Answer:

don't see a picture

Explanation:

Salt is an ionic compound that is composed of positively charged cations and negatively charged anions. The metal or ammonium ion replaces the hydrogen ion in an acid. Salts are found in nature and can be produced by chemical reactions. Some salts are used in food for flavouring and preservation.

Salt is made when the hydrogen ions in an acid are replaced by a metal or ammonium ion. This process is known as a neutralization reaction. The acid and base will combine to form water and salt. For example, hydrochloric acid (HCl) and sodium hydroxide (NaOH) will react to form water (H2O) and sodium chloride (NaCl), which is commonly known as table salt. In summary, salt is made when the hydrogen ions in an acid are replaced by a metal or ammonium ion, and it is an ionic compound composed of positively charged cations and negatively charged anions that are used in various industries.

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The principle of option D. Uniformitarianism states that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the

Option D. Uniformitarianism is the principle stating that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the geologic past. It is based on the idea that the present is the key to the past. In other words, the same natural laws that operate in the universe today have been operating since the beginning of time.

James Hutton was the first to propose this principle in the late 18th century. He suggested that the Earth was shaped by slow-acting geological forces such as erosion, sedimentation, and uplift over long periods of time. He believed that the same processes were still happening today and that they had operated in the past.

This principle is an important concept in geology because it allows scientists to interpret the Earth's history based on the processes that they observe today. By understanding how these processes work and how they have changed over time, scientists can reconstruct the history of the Earth and its environments.

Uniformitarianism has been tested and proven through many observations and experiments. For example, the study of sedimentary rocks has shown that they were formed in the past through the same processes that are observed today, such as deposition of sediment by water, wind, or ice.

Similarly, the study of volcanoes has shown that they are formed by the same processes as today, such as the movement of magma from deep within the Earth.

In conclusion, Uniformitarianism is the principle that allows us to interpret the Earth's history by observing the processes that shape it today. It is a fundamental concept in geology and has been tested and proven through many observations and experiments.

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The best reagent for each step is NaNH2, NH2 and CH3I, and HBr.

First of all in the presence of strong base ammonia, we het the clcylated product chain elongation gives but-2-ene followed by bromination gives 2-dibromobutane.

Alkyne using NH3 gets converted into Elongated chain alkyne followed by Hbr.

The reaction of bromine with (E)-stilbene is a classic reaction performed as an example of an electrophilic addition reaction of alkenes. The reaction is stereospecific through an anti addition to the double bond. The traditional reaction uses a bromine solution in methylene chloride, which has very high toxcity.

This bromination reaction demonstrates the stereochemistry of the electrophilic addition of bromine to an alkene. The bromine in this greener approach is generated in situ and eliminates the use of methylene chloride.

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Answer:

Density=189.9/226ml.

Explanation:

total mass=91.2g.

41.6ml-19ml=22.6ml of the object.

mass of the object=91.2-71.21=18.99g.

so D=M/V.

D=18.99/22.6.

D=189.9g/226ml

Answer:

Number of atoms is equal.

Explanation:

1 mol of anything contains NA particles.

NA is known as Avogadro's number, 6.02×10²³

We determined the moles of each compound. Both molecules are dyatomic,

H₂  → 2.02 g . 1mol / 2.016 g = 1 mol

O₂ →  32 g . 1mol / 32g = 1 mol

Both have the same amount of moles.

In conclussion, the number of atoms is the same in both samples.