What mass of potassium chloride, a salt substitute often used by heart patients, can be produced directly from 5.2 g potassium and 7.9 g chlorine ?
2K+Cl2⟶2KCl
(a) 5.2 g KCl
(b) 4.9 g KCl
(c) 9.9 g KCl
(d) 10.1 g KCl.

In atomic orbital theory, covalent bonding occurs when two atoms overlap their atomic orbitals, which are regions in space where the probability of finding an electron is highest.

Atomic refers to anything that is made up of or related to atoms. Atoms are the basic building blocks of matter, and are composed of protons, neutrons, and electrons. All matter is composed of atoms, which are the smallest particles of an element that retain its chemical properties. Atomic theory states that atoms are indivisible and indestructible, and cannot be created or destroyed.

The overlapping of two or more atomic orbitals results in the formation of molecular orbitals, which are regions of high electron density between the two nuclei. Electrons in the molecular orbitals are then shared between the two atoms, forming a covalent bond. This sharing of electrons is made possible by the fact that the electrons do not actually belong to any one atom and can be found in both orbitals at the same time. This allows the electrons to be shared in a way that reduces the overall energy of the system and strengthens the bond between the atoms.

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Option A displays the accurate dimensional analysis for converting 14,612 mL to daL.

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Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question we have

\(density = \frac{15}{14} \\ =1.0714285 ...\)

We have the final answer as

Hope this helps you

Answer:

CHEMISTRY is the answer

Explanation:

According to the research, the correct option is b. Chemistry is the field of study that studies matter, and its transformation.

It is in charge of studying chemical reactions and the combination of atoms, properties, composition and transformation of matter.

Since it is the scientific study of matter, it allows us to satisfy the needs of humanity through the changes experienced by matter, achieving medicines, raw materials, and new substances.

Therefore, we can conclude that according to the research, the correct option is b. Chemistry is the field of study that studies matter, and its transformation.

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A double bond in a hydrocarbon chain of a fatty acid can influence the dispersion forces that can form between the hydrocarbon chains by decreasing the strength of the dispersion forces.

Dispersion forces, also known as van der Waals forces, are the weakest type of intermolecular forces that occur between molecules. These forces are caused by temporary dipoles that form when electrons in the molecules move around.

In a hydrocarbon chain with only single bonds, the chain is able to pack closely together, allowing for stronger dispersion forces between the chains. However, when there is a double bond present in the chain, it creates a kink or bend in the chain, preventing it from packing as closely with other chains. This decreases the strength of the dispersion forces between the chains.

Therefore, the presence of a double bond in the hydrocarbon chain of a fatty acid can decrease the strength of the dispersion forces between the chains, leading to weaker intermolecular forces and potentially different physical properties, such as a lower melting point.

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Your answer is...

Motion in solids slow down, and are closer together, vibrating, but not moving from their spots. Though in a gas, all the particles move freely, without any special form, taking the shape of its container.

Hope this helped! -Perplxxd

Extra Fact: Motion in liquids also take the shape of the container that they are in, but they are close together, unless separated.

Answer:

The are more compacted in a solid, and are not move as freely than the gas particles.

Explanation:

Solid, compacted, not moving as much atoms.

Gas, not compacted, freely moving, and less atoms.

The gas given off at the cathode is hydrogen while the gas given off at the anode is oxygen.

The term electrolysis has to do with the decomposition of a substance by the passage of a direct current through it.

The ions present in the system are\(H^+\), \(OH^-\) and \(NO_3^-\) ions. The gas given off at the cathode is hydrogen while the gas given off at the anode is oxygen.

The half-reaction equation of the reduction is;

\(2H^+(aq) + e\) → \(H_2(g)\)

The oxidation half-reaction equation is;

\(4OH^- (aq)\) → \(2H_2O(l) + 4e\)

The overall equation is;

\(4H^+(aq) + 4OH^- (aq)\) → \(4H_2(g) + 2H_2O(l) + 4e\)

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Answer:

Glycine

Explanation:

Glycine is the simplest amino acid and most commonly found in animal proteins.

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Cregan is a creep!
-Jaron, King of Carthya.

Answer:

Biosphere

The Biosphere --contains all the planet's living things. This sphere includes all of the microorganisms, plants, and animals of Earth. Within the biosphere, living things form ecological communities based on the physical surroundings of an area.

Explanation:

Answer:

Biosphere

Explanation:The Biosphere --contains all the planet's living things. This sphere includes all of the microorganisms, plants, and animals of Earth. Within the biosphere, living things form ecological communities based on the physical surroundings of an area. hope this helps (:

1. A solute dissolves in a solvent to make a solution that describes a homogeneous mixture.

2. It has a single chemical composition property that describes a mixture.

1. A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. The saltwater described above is homogeneous because the dissolved salt is evenly distributed throughout the entire salt sample.

2. So, a mixture is made up of 2 or more different substances which are mixed but are not chemically combined. Also, the identities of each component are retained and the mixture can b separated into its components by physical means. So now alpha as a mixture does not have fix ratio of components, so it cannot be represented by a fixed formula. So hence we can conclude that hence d is the correct option, so that is, the mixture cannot be described by any chemical symbol or chemical formula.

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Answer:

In chemistry, a product is a substance that is formed as the result of a chemical reaction. In a reaction, starting materials called reactants interact with each other.

Explanation:

Soap is potassium or sodium salts of a carboxylic acid attached to a long aliphatic chain. Detergent is the potassium or sodium salts of a long alkyl chain ending with a sulfonate group.

Answer: D

Explanation:

D - Decomposition of carbonates into oxide and carbon dioxide

A - Combustion reaction. Combustion of methane to form Carbon dioxide and water.

C - Reaction of reactive metal (Na) and water to form hydroxide.

B - No particular name of the reaction. Usually denoted as a synthesis redox reaction.

Answer:CaCO3  CaO + CO2

Explanation: just took it

1. The number of mole in 0.293 Kg of Pb is 1.42 mole

2. The number of atom in 0.293 Kg of Pb is 8.55×10²³ atoms

1. How to determine the number of mole

The numbe of mole in the 0.293 Kg of Pb can be obtained as follow:

Mole = mass / molar mass

Number of mole of = 293 / 207

Number of mole = 1.42 mole

Thus, the number of mole is 1.42 mole

2. How to determine the number of atoms

The number of atoms can be obtained as follow:

From Avogadro's hypothesis,

1 mole of Pb = 6.02×10²³ atoms

Therefore,

1.42 mole of Pb = (1.42 mole × 6.02×10²³ atoms) / 1 mole

1.42 mole of Pb = 8.55×10²³ atoms

Thus, the number of atoms is 8.55×10²³ atoms

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The release of additional flammable materials can be caused by a variety of factors, including sparks or flames from the initial fire, mechanical or electrical malfunctions, or other sources of ignition.

The release of additional flammable materials can be caused by a number of factors, including:

It is important to be aware of the potential sources of additional flammable materials in order to prevent secondary fires from occurring.

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Answer:

thank you for this oibnki

Answer:

Sure I'll go ahead and like your answers and follow you if that's what you wanted! :)

Explanation:

Answer:

58.5g/mol

Explanation:

Given parameters:

Mass of gas  = 4.25g

Volume  = 1.7L

Pressure  = 883mmHg

                760mmHg  = 1 atm

                883mmHg  = \(\frac{883}{760}\)   = 1.16atm

Temperature  = 58°C  = 58 + 273  = 331K

Unknown:

Molar mass of sample  = ?

Solution:

To solve this problem, we use the ideal gas equation to find the number of moles;

            PV  = nRT

 P is the pressure

V is the volume

n is the number of moles

R is the gas constant  = 0.082atmdm³mol⁻¹K⁻¹

 T is the temperature

           n  = \(\frac{PV}{RT}\)   = \(\frac{1.16 x 1.7}{0.082 x 331}\)   = 0.07mole

 Since;

            mass  = number of moles x molar mass

            4.25  = 0.07 x molar mass

 Molar mass  = 58.5g/mol

Answer:

There are 13 numbers in an aluminum atom and 13 electrons.

Explanation:

This is because the atomic number equals the number of protons and the atomic number of Al is 13.  The number of electrons also equals the number of protons.

Answer:

13, 13

Explanation:

Explanation:

density can be changed by changing either the pressure or the temperature. Increasing the pressure always increases the density of a material. Increasing the temperature generally decreases the density, but there are notable exceptions to this generalization.

Answer:

I think it is b

Explanation:

The part of speech for each word or phrase that is not concise science writing are: adjective, adverb, adjective respectively.

Apart from written communication in everyday life, writing is considered the cornerstone of scientific communication. In a scientific article, concise writing is always a key feature. Hence the answer to the question is an adjective, adverb, adjective respectively.

Concise writing, according to the question, means using only the words needed to convey an idea in a simple and understandable way. In science writing, it is more critical since it involves expressing complicated concepts in straightforward language without losing the underlying scientific message.

For instance, in the given question, each of the three phrases: bright as a summer day, gracefully, and lovely are not concise science writing since they represent an excess in the usage of language. Therefore, they do not adhere to the rules of conciseness in writing.

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The measure of how densely a material is packed together is called density. As the mass per unit volume, it has that definition. The density of aluminum in g/cm³ is 2.70 g/cm³.

A substance's density is a measurement of how heavy it is in relation to its size. If an object is placed in water, it will float if it is less dense than the water, and it will sink if it is more dense. The density of a material is a distinguishing quality that is independent of the substance's volume.

The volume of the metal =315 cm³

Then density is:

Density = mass /volume

Density of metal = 851 g / 315cm³

D = 2.70 g / cm³

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PDK1 catalyzes the addition of phosphate to the hydroxyl functional group. PDK1, also known as 3-Phosphoinositide-dependent protein kinase 1, is an enzyme that plays a role in signaling pathways within cells.

It is activated when it binds to a phosphatidylinositol-3,4,5-trisphosphate (PIP3) lipid, leading to the transfer of a phosphate group to an activating site on the enzyme.

PDK1 then catalyzes the transfer of phosphate from ATP to a hydroxyl group on serine or threonine residues on a variety of other proteins.

This phosphorylation modulates the function of the protein, often leading to its activation.

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Answer:

if the negative ion ends in -ide

Explanation:

The rules for naming the ionic compounds is given as :

The negative ion (anion) is written next. The suffix is added at the end of the negative ion (anion). The suffix used is '-ide'.

Answer:

A. if the negative ion ends in -ide

Explanation:

in ionic compounds the second name in the chemical name is the negative atom, and always the second name in a chemical name has to end in -ide.

So putting those together, the negative ion (which in ionic compounds, comes SECOND) ends in -ide.

Also, I got this question correct on the edg review! :)

Thank God because he blesses us everyday!

The molar mass of the unknown gas is approximately 130.2 g/mol. Considering that it's made up of atoms and given its molar mass, the most likely chemical formula of the gas is Xe (xenon). Xenon has a molar mass of approximately 131.29 g/mol, which is close to the calculated value.

Based on the given information, we can determine the chemical formula of the gas using Graham's Law of Effusion. Graham's Law states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass. The formula is:

Rate1 / Rate2 = √(M2 / M1)

Here, Rate1 is the rate of effusion for the unknown gas, Rate2 is the rate of effusion for Cl2, M1 is the molar mass of the unknown gas, and M2 is the molar mass of Cl2.

Since the unknown gas escapes 0.735 times as fast as Cl2, we can set up the equation:

0.735 = √(M2 / M1)

Now, we need to find the molar mass of Cl2. Chlorine has a molar mass of approximately 35.45 g/mol. Cl2 has two chlorine atoms, so its molar mass is:

M2 = 2 * 35.45 = 70.9 g/mol

Next, we need to solve for M1:

0.735 = √(70.9 / M1)

Square both sides of the equation:

0.735^2 = 70.9 / M1

M1 = 70.9 / 0.735^2

M1 ≈ 130.2 g/mol

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The chemical separation method for two of the above named mixtures or compound indicated above are explained below.

A chemical compound is a material generated by the chemical union of two or more elements in set quantities.

Benzophenone and tributylamine

The combination of benzophenone and tributylamine is in diethyl ether (given in question). Tributylamine is a base that may readily be changed to a water soluble salt by adding an aqueous acid.

Add dilute aqueous acid to the solution. The amine salt will be present in the aqueous layer, whereas benzophenone will be present in the ether layer. A separatory funnel will isolate levels.

Fluorenone, octanoic acid, and dicyclohexylamine

Fluorenone, Octanoic acid, and dicyclohexyl amine: The combination comprises both an acid (octanoic acid) and a base (dicyclohexyl amine) (dicyclohexyl amine).

Add the diluted aqueous base to the solution (like NaCO3). Divide the two layers.

The acid is present in the aqueous layer as a salt, while the fluorenone and amine are present in the ether layer.

Add weak aqueous acid to this combination of fluorenone and dicyclohexyl amine.

Divide the two layers. The amine is present in the aqueous layer, and fluorenone is present in the ether.

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An electron will emit energy in quanta when its energy state changes from 4p to 3s.

When a quantum mechanical system or particle is bound, or spatially constrained, it can only take on specific discrete energy values, or energy levels. As opposed to classical particles, which can have any energy level, this. The phrase can also refer to the energy levels of nuclei or the vibrational or rotational energy levels in molecules. The term is most frequently used to describe the energy levels of the electrons in atoms, ions, or molecules that are confined by the electric field of the nucleus. A system with such distinct energy levels is said to have a quantized energy spectrum.

An electron shell, also known as a primary energy level, is the orbit of one or more electrons around the nucleus of an atom in chemistry and atomic physics. The "1 shell" (also known as the "K shell") is the shell that is closest to the nucleus. The "2 shell" (also known as the "L shell"), "3 shell" (also known as the "M shell"), and so forth are the shells that are further and more away from the nucleus. The shells are either labelled alphabetically with X-ray notation letters or with the primary quantum numbers (n = 1, 2, 3, 4...) (K, L, M, N...).

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Asnwer: average atomic mass of chromium is 52amu

Calculations:

49.946amu: 4.350%= 0.0435

51.941amu: 83.790%= 0.8379

52.941amu: 9.500%= 0.095

53.939amu: 2.360%= 0.0236

Average atomic mass of chromium = 0.0435(49.946) + 0.8379(51.941) + 0.095(52.941) + 0.0236(53.939)

= 51.9963703amu

= 52 amu

Answer:

Explanation:

Since Lithium gives away one electron, I believe it goes to Sulfur.

Hope this helps! :)

Answer:

Li*2S

Explanation:

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