.if you dilute 0.20 l of a 3.5 m solution of lici to 0.90 l, determine the new concentration of the
solution.

Answer: Hydrogen

Explanation: The Bohr Atom is a very simplified model of the electron positions of each element of the Periodic Table. Each Row of the periodic table is represented by an orbit. Hydrogen and Helium are in the first energy level (row) of the periodic table and their Bohr Models would have one orbit.

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It is true that 1,3-butadiene has the chemical formula C4H6 and is a conjugated diene. A popular monomer in the creation of synthetic rubber, polymers, and resins, it is a colourless, flammable gas.

A conjugated diene with the chemical formula C4H6 is 1,3-butadiene. A popular monomer in the creation of synthetic rubber, polymers, and resins, it is a colourless, flammable gas. Because of the butadiene's conjugated double bond system, pi-electrons are delocalized over the whole molecule, giving it special characteristics including high reactivity, a low boiling point, and a propensity for addition reactions. Butadiene is a crucial industrial chemical that is created by the catalytic dehydrogenation of butene or butane. It finds usage in a variety of petrochemical, polymer, and automotive applications.

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Answer:

Explanation:

The pH of a solution can be found by using the formula

\(pH = - log ([ { H_3O}^{+}])\)

H3O+ is the hydronium ion

From the question we have

\(pH = - log(3.2 \times {10}^{ - 6} ) \\ = 5.49485..\)

We have the final answer as

Hope this helps you

Speed

Explanation:

The distance travelled by a body per unit time

The concentrations of major species in a mixture of weak and strong acids and bases are determined by their dissociation behavior and interaction in a solution, influencing the overall pH and buffering capacity.

The relationship among the concentrations of major species in a mixture of weak and strong acids and bases can be understood through their dissociation and interaction in a solution.

Strong acids, such as HCl, fully dissociate in water, releasing a high concentration of H+ ions. Similarly, strong bases, like NaOH, dissociate completely, releasing a high concentration of OH- ions.

Weak acids, such as acetic acid (CH3COOH), only partially dissociate in water, releasing a smaller concentration of H+ ions. Likewise, weak bases, like ammonia (NH3), partially dissociate, releasing a smaller concentration of OH- ions.

When a mixture of weak and strong acids and bases is present, the strong species will react first due to their higher concentrations of H+ or OH- ions. This reaction will affect the pH of the solution, as well as the concentrations of the weak species, as they will be buffered by the strong species.

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Q. How many molecules of H2O can be produced from reactants in container below?

A. 3 molecule of molecules H2O will be produced from reactants in container.

Explanation:

There are seven molecules of H2 and three molecule of O2 are there in the container Q, 6 molecules of H2 will react with 3 molecules of O2 to produce 3 molecules of H2O. One molecule of Hydrogen will not take part in reaction and will be present in container Q after then reaction, and the mass in overall reaction is conserved!

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Answer:

CuSO3

Explanation:

The fission reaction released the most energy per amu when compared to the fusion reaction.

The amount of energy released per amu for fusion is given as 0.36 J/amu.

The amount of energy released per amu for fission is given as 0.85106383 J/amu.

From the different energy released per amu, it is obvious that  0.85106383 J/amu is greater than 0.36 J/amu.

Thus, the fission reaction released the most energy per amu when compared to the fusion reaction.

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A chemical property is a characteristic of a particular substance that can be observed in a chemical reaction.

The change of one type of matter into another type (or the inability to change) is a chemical property. Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types),  heat of combustion rate of radioactive decay, and chemical stability.

Chemical properties of a substance are determined through experimentation with other materials or processes of known chemical properties. If the substance in question changes in a known way, it tells you something about the substance. A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.

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The lewis structure for these anions are-

a fairly straightforward manner to visualize a molecule's valence shell electrons is through a Lewis structure. It gives insight into the pairing and association of the electrons surrounding every atom in the molecule.

every electron inside the Lewis dot structure can be represented via a dot, and a line connecting the dots is drawn to shape an electron bond.

simplest the valence electrons are taken under consideration whilst sketching the Lewis dot shape, ignoring the electrons that don't belong to the outermost shell.

The Lewis shape is the most effective and maximum constrained speculation; it does no longer describe how bonds are created or how electrons are disbursed most of the atoms. And that is visible as the essential constraint at the Lewis shape.

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The correct chemical formula for calcium carbide is CaC₂, not Ca₂C. It is a compound that is formed by the combination of calcium and carbon.

What is Calcium?

Calcium is a chemical element with the symbol Ca and atomic number 20. It is a soft, silvery-white metal that belongs to the alkaline earth metals group.

Calcium carbide is an important industrial chemical that is used in a variety of applications, including the production of acetylene gas, which is used as a fuel and in welding and cutting applications. It is also used in the production of calcium cyanamide, which is used as a fertilizer, and in the production of various organic chemicals. The difference between CaC₂ and Ca₂C is significant, as the latter compound does not exist. It is important to use the correct chemical formula when referring to a particular compound, as using an incorrect formula can lead to confusion and potentially dangerous situations in industrial settings.

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Answer: oh i thought i knew it nvm im sorry love

Explanation:

A, the total number of valence electron is 24 for Silicon Tetrachloride , SiCl₄ .

In Lewis Dot structure S=N-A is used to calculate the total number of shared and unshared electrons in a molecule.

S is the number of shared electrons ,N is the number of total valence shell electrons required by all the atom of the molecule, A is the total number of valence electrons available from all the atoms in the molecule

For SiCl₄,

• We have to first count the valence electron on each atom that is coming to form a molecule .

Valence electron on Si = 4

Valence Electron on Cl = 7

Total valence electron on SiCl₄ = 4+ 4 * 7 = 32

• Then we find the least electronegative atom in the molecule and place it at the center , In SiCl₄ , Si has 1.8 and Cl has 3.16 and so Si is placed at the center and four Cl atoms are connected with a single bond

• A single bond takes up 2 valence electron and so for four bonds 8 valence electrons have been occupied , so we are left with 32-8=24 valence electrons.

Therefore In the Lewis Dot structure S=N-A , Total number of valence electrons available from all the atoms in molecule of SiCl₄ is 24.

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The 3 different important words for the carbon cycle are nitrification, denitrification, and nitrogen fixation.

Nitrogen fixation is the process of transforming nitrogen from the atmosphere into ammonia, which is a molecule that plants can utilize. Nitrogen fixation is done by particular bacteria and cyanobacteria, which transform nitrogen into a form that other organisms can utilize.

Nitrification is a process that involves the transformation of ammonia into nitrite and then nitrate. Nitrate is an essential component of plants, and it aids in their growth.

Denitrification is a process that transforms nitrates into nitrogen gas, which is released into the environment. Denitrification is done by anaerobic bacteria, and it occurs in places where oxygen is limited.

Therefore, these are the 3 different important words for the carbon cycle.

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Answer:

Magnesium

Explanation:

Using the KLMN styled electronic configuration, the electronic configuration of sulphur with atomic number 16 is 2, 8,6

What this means is that it needs extra 2 electrons to fill into its M shell to attain the octet configuration.

Now let’s look at Magnesium, with atomic number 12, the electronic configuration it has is 2,8,2.

This means it has 2 extra electrons to give away so as to attain its own stability.

The sulphur atom will gladly accept the two electrons which the magnesium atom wants to give away. This makes it the perfect element to be reacted with sulphur to make it attain its octet configuration

Answer:

Sb

Explanation:

Sb (antimony) is an metalloid

Answer:

ooh sorry, but will this help you now:

Ocean dynamics define and describe the motion of water within the oceans. Ocean temperature and motion fields can be separated into three distinct layers: mixed (surface) layer, upper ocean (above the thermocline), and deep ocean. Ocean currents are measured in sverdrup (sv), where 1 sv is equivalent to a volume flow rate of 1,000,000 m (35,000,000 cu ft) per second.

Surface currents, which make up only 8% of all water in the ocean, are generally restricted to the upper 4…

Explanation:

Hope this helps :)

This significant change in the Earth's atmosphere is marked by the emergence of redbeds, sediments that contain oxidised iron.

The release of oxygen into the atmosphere led to the formation of minerals on land (continental redbeds). Since the created oxygen was absorbed by rocks for a very long time, as seen in Banded Iron Formations (BIFs) and continental red beds, it did not accumulate in the atmosphere for very long. The majority of the oxygen created over time is still preserved in the historic "banded rock" and "red bed" formations. The growth of oxygen may have been significantly influenced by the oxidation of the mantle rocks. It has been suggested that the shift from subaerial to mostly submerged volcanoes may also have resulted in a decline in volcanic emission of decreased gases.

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Answer:

128.33g

Explanation:

\(2 \text{ KClO}_3 \to 2 \text{ KCl}+3\text{ O}_2\)

a)

\(2 \text{ mols of KClO}_3 \equiv 3 \text{ mols of O}_2\)

\(19 \text{ mols of KClO}_3 \equiv 3\cdot 9,5 \text{ mols of O}_2\)

\(\boxed{19 \text{ mols of KClO}_3 \equiv 28,5 \text{ mols of O}_2}\)

b)

\(2 \text{ mols of KClO}_3 \equiv 2 \text{ mols of KCl}\)

\(62 \text{ mol of KClO}_3 \equiv 62 \text{ mol of KCl}\)

Using the atomic mass given in the periodic table:

\(62\cdot(39+35,5+16\cdot3) \text{ g of KClO}_3 \equiv 62 \text{ mol of KCl}\)

\(62\cdot122,5 \text{ g of KClO}_3 \equiv 62 \text{ mol of KCl}\)

\(7595 \text{ g of KClO}_3 \equiv 62 \text{ mol of KCl}\)

\(\boxed{7,595 \text{ kg of KClO}_3 \equiv 62 \text{ mol of KCl}}\)

c)

\(2 \text{ KCl}+3\text{ O}_2\to 2 \text{ KClO}_3\)

\(3 \text{ mols of O}_2 \equiv 2 \text{ mols of KCl}\)

Using the atomic mass given in the periodic table:

\(3\cdot(2\cdot 16) \text{ g of O}_2 \equiv 2\cdot(39+35,5) \text{ g of KCl}\)

\(96\text{ g of O}_2 \equiv 149\text{ g of KCl}\)

\(\dfrac{39}{149}\cdot 96\text{ g of O}_2 \equiv \dfrac{39}{149}\cdot 149\text{ g of KCl}\)

\(\boxed{25,13\text{ g of O}_2 \equiv 39\text{ g of KCl}}\)

This result is an aproximation.

Answer:

Group 12

Explanation:

Answer:

I got all answers correct on my test and got 100%, this question was in the test which got correct

so your answer is group 12

Explanation:

Two different samples of matter are measured in each of these glass containers. Both of the containers show the same measure for both samples of matter. These samples have volume in common.

In chemistry, volume is defined as the three-dimensional space taken up by matter. Volume is measured in cubic meters.

If you were to put two different samples in a graduated glass container and both of them have the particular digit that shows their volume then it means their volume is the same and they take up the same amount of space irrespective of their chemical composition.

For example, if you pour the sample into a glass container and the number you get is 250 m³.

Then this 250 m³ refers to the volume of the sample.

In general, volume is measured as volume =  mass/density and its SI unit is m³.

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Considering the definition of atomic mass, isotopes and atomic mass of an element,  the isotope with masses of 62.939598 amu and 64.927793 amu have percent abundances of 69.80% and 30.20% respectively.

The atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus of a chemical element.

The same chemical element can have the same atomic numbers, but the number of neutrons is different. These atoms are called isotopes of the element.

The atomic mass of an element is the weighted average mass of its natural isotopes, taking into account the relative abundance of each of them.

In this case, you know:

The percent abundance can be calculated as:

62.939598 amu× (x%÷100%) + 64.927793 amu× [(100-x)%÷100%]= 63.54 amu

Solving:

62.939598 amu× x+ 64.927793 amu× (1-x)= 63.54 amu

62.939598 amu× x+ 64.927793 amu× 1- 64.927793 amu× x= 63.54 amu

62.939598 amu× x- 64.927793 amu× x= 63.54 amu - 64.927793 amu× 1

-1.988195 amu× x= -1.387793 amu

x= (-1.387793 amu)÷ (-1.988195 amu)

x= 0.6980= 69.80%

Then, (100-x)%= (100 -69.80)%= 30.2%

Finally, the isotope with mass of 62.939598 amu has a percent abundance of 69.80% and the isotope with mass of 64.927793 amu has a percent abundance of 30.20%.

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No idea what this is for, but I hope you have an amazing day:)

Answer:

solvent solutions

Explanation:

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

The expected boiling point ranking of the given compounds is in the order of highest to lowest will be:

• CH3OH

• CH3Cl

• CH4

The boiling point of a compound is influenced by factors such as the strength of intermolecular forces, molecular weight, and branching. Based on these factors, we can rank the given compounds by their expected boiling point:

• CH3OH (methanol) - Methanol has the highest boiling point among the given compounds due to its ability to form strong hydrogen bonds between its molecules. Hydrogen bonding is a strong intermolecular force that requires a significant amount of energy to break, which results in a higher boiling point.

• CH3Cl (chloromethane) - Chloromethane has a lower boiling point than methanol because it only has dipole-dipole interactions and van der Waals forces between its molecules. These intermolecular forces are weaker than hydrogen bonding, so less energy is required to overcome them, resulting in a lower boiling point.

• CH4 (methane) - Methane has the lowest boiling point among the given compounds because it is nonpolar and only has weak van der Waals forces between its molecules. These intermolecular forces are the weakest, requiring the least amount of energy to overcome, which results in the lowest boiling point.

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The ranking of these compounds by boiling point is:

1. CH3OH (Methanol)

2. CH3Cl (Chloromethane)

3. CH4 (Methane)

1. CH3OH (Methanol) - Boiling Point: 65°C

Methanol (CH3OH) is a colorless and flammable liquid that is the simplest alcohol, with a molecular formula of CH3OH. It is used in antifreeze, as a solvent, and as a fuel. It has a boiling point of 65.0 °C.

2. CH3Cl (Chloromethane) - Boiling Point: -24.3°C

Chloromethane (CH3Cl) is a colorless, flammable gas with a sweet odor. It is used as a solvent and a refrigerant, and has a molecular formula of CH3Cl. It has a boiling point of -24.2 °C.

3.CH4 (Methane) - Boiling Point: -161.5°C

Methane (CH4) is a colorless and odorless gas that is the main component of natural gas. It has the chemical formula CH4 and is the simplest hydrocarbon. It is used as a fuel for heating and cooking, and has a boiling point of -164.0 °C.

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These two elements were born ironically in the sense that the production of these two elements was opposite to what was initially expected.

Irony is defined as an event or outcome that is opposite to what was expected. The natural creation of certain elements can be considered ironic. For example, one such ironic creation is the production of helium and lithium. During the early moments of the universe, when stars were being formed, the majority of the elements that make up everything around us were created. At the beginning of this process, hydrogen and helium were the only two elements present. These two elements then combined and gave birth to other elements.

One of the elements that were created was lithium. The production of lithium was expected to be small, given that it was made up of a scarce helium-3 isotope. However, it turns out that lithium production was surprisingly high. Another ironic birth is that of helium. During the formation of the universe, hydrogen fused and gave birth to helium. Helium was expected to be a rare element. However, today, helium is the second most abundant element in the universe.

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Answer:

True

Explanation:

Fusion of hydrogen is the main source of the sun's energy.

Answer:

The primary source of solar energy, and that of similar size stars, is the fusion of hydrogen to form helium (the proton–proton chain reaction), which occurs at a solar-core temperature of 14 million kelvin.

so I think true

CaCl2 is the compound which is more likely to be ionic .

Ions, charged particles that develop when an atom (or group of atoms) gets or loses electrons, are the building blocks of ionic compounds. An anion is a negatively charged ion, whereas cations are positively charged ions. When two elements create molecules by a covalent link and share electrons, this results in covalent or molecular compounds.

When Cacl2 dissolve in  aqueous solution it gives Ca+² and cl- ions.

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The number of moles of gas is the same on both sides, the change in volume will not affect the equilibrium position of the reaction. The answer is B) There is no change because there are the same number of moles of gas on both sides.

To determine the change that will occur when the container is shrunk from 9.0 L to 3.0 L for the given reaction:

51.8 kJ + H₂(g) + I₂(g) → 2HI(g)

We need to consider the number of moles of gas on each side of the reaction.

On the left side, there are 2 moles of gas (H₂ and I₂), while on the right side, there are 2 moles of gas (2HI). Both sides have an equal number of moles of gas.

Therefore, the correct answer is B) There is no change because there are the same number of moles of gas on both sides.

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