if a 23.25 g sample required 25.6 ml of 0.135 m kmno4 to reach equivalence, what is the percent iron in the sample?

Oxygen and silicon are found in silicate minerals. Minerals that lack silicate do not. Their make-up and prevalence in the crust of the earth.

What materials are silicate and which are non-silicate among the following?

Quartz, olivines, and garnet minerals are typical examples of silicate minerals. Sand, for instance, is mostly made of quartz, which is particularly widespread. Pyrite, also known as "fool's gold," is a common non-silicate mineral that is composed of iron and sulfur and is well-known for its misleading metallic brilliance.

What do you mean by non-silicate minerals?

Minerals that don't contain oxygen or silicon (Si) in a tetrahedral form. Calcite, gypsum, flourite, hailte, and pyrite are some of them. The mineral groups Oxides, Sulfides, Halides, and Phosphates are typical non-silicate mineral groups.

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Gauche interactions are only possible between two substituents when their dihedral angle is equal to or less than 600.

Your provided image is somewhat not sufficient to hold two items in a bin, hence I am gonna use another image of the same question with white background to make sure you read it precisely!

Please also note that 'Y' on C-1 can have gauche interactions with substituents on C-2 & C-6 only, remaining all will just either axial or equatorial only!

Cyclohexene is a hydrocarbon with the chemical formula C6H10. This cycloalkene is a colorless liquid with a pointy scent. It's miles an intermediate in various industrial procedures. Cyclohexene isn't always very solid upon long-time garage with exposure to light and air because it forms peroxides.

Cyclohexane is an alicyclic hydrocarbon comprising a ring of six carbon atoms; the cyclic shape of hexane is used as a raw cloth within the manufacture of nylon.

Cyclohexene is used in a numerous variety of chemical syntheses. It's miles a building block that is utilized in Pharma, (eg, Clidanac, MK 346, Trandolapril, and Agchems which includes Propargite.

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This saturated naoh solution has a molarity of 13.92 M.

Moles of solute per liter of solution is known as molarity (M, or mol/L). We simply need to convert grams of NaOH to moles of NaOH in this instance because it has a molar mass of 39.997 g/mol:

We are given the following details:

557 g is the solute mass (sodium hydroxide).

Molar mass of sodium hydroxide is 39.99 g/mol.

Solution volume = 1 L

The equation's output is as follows when we enter values:

molarity = number of moles of solute/volume of solution in litres

               = 557 g NaOH/1 L solution * 1 mol NaOH/39.997 g NaOH

               = 13.92 mol NaOH/1 L solution = 13.92 M NaOH;

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Scope 3 emissions examples include those from capital goods, upstream transportation and distribution, bought goods and services, fuel combustion and energy use, and employee commuting.

Although not all of them will apply to all businesses, scope 3 emissions can be broken down into 15 categories. Scope 3 emissions are thought to come from the burning of fuel combustion as well as processes downstream of the organization. One of the three emission streams included in the Greenhouse Gas Protocol is known as Scope 3 emissions (GHGP). Scope 1 includes emissions which are directly related to operations which a reporting company owns or supervises. fuel combustion that fall under scope 2 are those that are produced using energy that has been purchased, such electricity.

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If 1-bromoadamantane was solvolyzed in 30% ethanol as opposed to 40% ethanol, the process would be slower.

A renewable fuel called ethanol is produced form corn or other plant components. The United States uses ethanol extensively, and far more than 98% of fuel contains some ethanol. E10, which contains 10% ethanol and 90% gasoline, is the most popular ethanol blend.

Over 2 billion people use ethanol (also known as ethyl alcohol) day after day. Yeast, sugars, mixed starches are fermented to create this kind of alcohol. People have been using ethanol-based beverages like beer and wine for generations to alter their mood.

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The percentages of carbon and hydrogen 84.37%  and 15.693% respectively.

The mass of a certain chemical element or chemical compound (g) divided by the amount of material is known as the molar mass (mol). By multiplying the standard atomic masses (in g/mol) of the component atoms, one may get the molar mass of a compound.

Molar mass of the compound is the mass of 1 mole of compound which is the sum of masses of each element.

[tex]C_9H_{20.[/tex]

Mass of 1 mole of compound= mass of carbon + mass of hydrogen+ = 9(12) + 20(1)= 128 g.

Percentage by mass of carbon = [tex]\frac{mass \ of \ the \ carbon}{mass \ of \ the\ molecule }[/tex]%

= 108/128 * 100

= 84.37 %

Percentage by mass of carbon = [tex]\frac{mass \ of \ the \ H}{mass \ of \ the\ molecule }[/tex] %

=20/128 *100 =15.63 %

The percentages of carbon and hydrogen 84.37%  and 15.693% respectively.

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Evaporation is a type of vaporization of a liquid that occurs from the surface of liquid into gaseous phase that is not saturated with the evaporating substance.

On the surface of a liquid as it transitions into the gas phase, evaporation is a type of vaporisation that takes place. When the rate of evaporation of water is affected by humidity, for example, a high concentration of the evaporating substance in the surrounding gas significantly slows down evaporation.

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14 gram of nitrogen contains 0.5 mol of nitrogen.

We know that the no of mol= [tex]\frac{given mass}{molar mass}[/tex]  , and nitrogen contains 2 N atom thus molar mass is 28. So no of mol is [tex]\frac{14}{28}[/tex] =0.5.

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The theoretical yield of the product was found to be 0.215g.

define theoretical yield ?

The theoretical yield of a chemical reaction is the amount of product received from the full conversion of the limiting reactant. It is the quantity of product produced by a perfect (theoretical) chemical reaction, which is not the same as the amount produced by a laboratory reaction. Theoretical yield is often stated in grammes or moles.

Unlike theoretical yield, real yield is the amount of product generated by a reaction. Actual yield is often lower since few chemical reactions operate with 100% efficiency due to loss retrieving the product and other processes that diminish the product. Sometimes the actual yield exceeds the theoretical yield.

Perhaps as a result of a subsequent reaction that produces more product, or because the recovered product contains contaminants.

The ratio of actual yield to theoretical yield is commonly expressed as a percentage yield.

The theoretical yield of the product was found to be 0.215g.

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By using the Ka values for given weak acids, the best component to prepare the buffer solution for pH 1.9 is H₃PO₄, pH 5.0 is CH₃COOH and for pH 3.9 is HCOOH.

Buffer solution is the solution which is prepared by the mixture of a weak acid and its strong base or vice versa. Its pH is calculated using Henderson-Hasselbalch formula which is

pH=pKa+log([base]/[acid])

Buffer solutions are working well within the range of pKa±1. Find out pKa value using the formula

pKa=-logka

For H₃PO₄

pKa=-log(7.5×10⁻³)

pKa=2.12

For CH₃COOH

pKa=(1.8×10⁻⁵)

pKa=4.74

For HCOOH

pKa=-log(1.8×10⁻⁴)

pKa=3.74

If we check the range of each solution, then for phosphoric acid(H₃PO₄) it will be in between 1.12-3.12. For acetic acid(CH₃COOH), it is in between 3.74-5.74 and for formic acid(HCOOH), it is in between 2.74-4.74.

Therefore, the best component to preapre the buffer solution for pH 1.9 is H₃PO₄, pH 5.0 is CH₃COOH and for pH 3.9 is HCOOH.

Your question is incomplete but the complete question would be that

Use the Ka values for weak acids to identify the best components for preparing buffer solutions with the given pH values. name formula ka phosphoric acid H3PO₄ CH3COOH 7.5 x 10⁻³ 1.8 x 10⁻⁵ acetic acid formic acid HCOOH 1.8 x 10⁻⁴ pH=1.9, pH=5.0, pH=3.9

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Common ionic compounds containing ions  always soluble in water is Alkali metals (Group 1).
Alkali metals are the six chemical elements in a group called Group 1(a) which are in the far left column of the periodic table.  The following are the six alkali metal elements, their properties and uses.
The Elements and Groups of Alkali Metals
The six elements that are included in the alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).  If you look at the periodic table, there is one more element at the top, namely hydrogen (H).  However, hydrogen does not belong to the alkali metals as it is a gaseous element.  All the elements in this group have one electron in their valence shell, or a single valence electron.
The most common alkali metal is sodium.  The amount is 2.8 percent.  The easiest type of sodium to find is sodium chloride or what we know as salt (NaCl).  Then the second most easily found element is potassium with an amount of 2.6 percent throughout the earth.  On the other hand, the rarest are rubidium, lithium and cesium.  Each only amounted to 0.01 percent, 0.002 percent and 0.0007 percent.  Meanwhile, francium is radioactive and only exists in nature for a short time.

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cycloheptatrienyl cation is the compound that is aromatic in nature.

Aromaticity is a characteristic in which any planar system in which there is complete delocalization of the pi electron in the ring, and the system contain 4n+2 pi electrons in the ring is called aromatic. Example : Benzene, naphthalene, anthracene etc.

According to Huckel's rule, an aromatic compound must have (4n + 2)π electrons that form generally forms an uninterrupted π electron cloud. In addition, it must be planar and also cyclic. If the compound is not planar and cyclic then it is also not aromatic.

The cycloheptatrienyl (tropylium) cation is aromatic because it also has 6 electrons in its pi system. It is planar, cyclic and also has conjugated system.

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Smart investors are looking for more reliable assets to avoid losing wealth in today's market, which has unpredictable stock market conditions.

Even if our economy may have been improving, recent developments have had a significant impact on the market. History has shown how crucial assets that can withstand a depression are. When it comes to learning how to preserve wealth during a depression, the Great Depression ranks among history's greatest teachers.

During a market crash or depression, the two most crucial assets to have on hand are gold and cash.

During depressions, stocks and mutual funds are regarded as a significant bet. While safer assets are Treasury bonds, banknotes, and notes. The American government issuing these products. Once they reach maturity, they offer the buyer a fixed rate of interest.

Foreign bonds were once widely advocated as a depression-resistant investment option by numerous experts. This is not always a safe bet, as recent events have demonstrated. Due to the impact on the economies of all nations caused by global pandemics and other market instabilities, this has lost its appeal as a wise investment.

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Answer:

A Red Giant

Explanation:

When the inward gravitational forces are less than the outward radiation pressure forces, the star swells and cools, thus turning red. High mass stars become red supergiants, low mass stars become red giants. The forces become unbalanced when the hydrogen begins to run out.

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The amount of S8 that would be generated, if the yield was 98%, is 47.1 grams.

Mass is a physical body's total amount of matter.

This chemical process is

8H2S + 4O2 = S8 + 8H2O

Moles to ratios

8 mol H₂S: 4 mol O2: 1 mol S8

Calculate the moles of2 5.0 grams of H2S

Molar mass is equal to mass in grams.

H2S molar mass equals 2 x 1 g/mol plus 32.1 g/mol to equal 34.1 g/mol.

25.0 g divided by 34.1 g/mol gives 0.733 moles of H2S.

Moles from 60.0 g of oxygen

O2 molar mass equals 2 x 16 g/mol, or 32.0 g/mol.

60.0 g / 32.0 g = 1.875 moles of oxygen.

State-restricting substance

8 moles of H2S to 4 moles of O2 is equal to 2/1 in theory.

Actual ratio: 0.733 moles of H2S to 1.875 moles of oxygen.

The limiting agent is H2S. (it is consumed completely whilce some O2 remains unreacted).

Find out how many moles of S8 were created from 0.733 moles of H2S.

0.18325 mol S8 is equal to 1 mol S8 / 8 mol H2S x 0.733 mol H2S.

0.18325 mol S to mass conversion

Moles times molar mass equals mass.

in molar mass S8 equals 8 mol x 32.1 g/mol, or 256.8 g/mol.

mass = 256.8 g/mol x 0.18325 mol, or 47.1 grams.

As a result, the S8 weighs 47.1 g.

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The silicon chip has [tex]1.22 * 10^{20}[/tex] silicon atoms.

The silicon chip used in an integrated circuit of a microcomputer weighs 5.68mg.

When weight is converted into grams, it gives [tex]5.68 * 10^{-3}[/tex]

To find the number of silicon atoms required, the weight must be divided with atomic weight as shown

[tex]5.68 * 10^{-3} / 28[/tex]

The obtained value must be multiplied with [tex]N_{A}[/tex] value which is [tex]6.023 * 10^{23}[/tex]

This gives  as the numbers of silicon atoms present in the chip [tex]1.22 * 10^{20}[/tex]

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The key to lowering overall tax liability should be to reduce the percentage of your total salary that is subject to taxation.

Your income tax is calculated depending on your annual revenue, and for many of us, the simplest method to minimize that amount is to contribute to an independent contractor retirement plan or perhaps an individually maintained conventional IRA.

The new legislation also increased the age at which seniors must begin taking required minimum distributions (RMDs) from their 401(k) and traditional IRA accounts. Previously, RMDs had to be taken at the age of 712. That age was raised to 72 years with the passage of the SECURE Act. Depending on a person's tax bracket when they begin withdrawing funds, the transition to accepting distributions may have an impact on taxes.

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The longest-lasting foods can be kept using corn starch.

In particular, focus and patience are crucial. There is hardly any water at all in cornstarch. That is to say, it indicates that there is nowhere for mold or bacteria, which are the main causes of damaged food, to flourish. So, go ahead and utilize the cornstarch you have on hand.

Anyway, I have to remind you once more: Just because cornstarch has an endless shelf life storage doesn't mean you should store it in your cupboard with the lid off. Cornstarch and people both can become ill as a result of rain. It can "get sick" or even "die" if it is exposed to humid environments.

Therefore, secure storage is an excellent defense!

Consider using several cornstarch alternatives if you see any signs of deterioration in your cornstarch.

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When sodium and chlorine react, they transfer an electron from the outer shell of sodium to the outer shell of chlorine.

Sodium has a single valence electron in its outer shell, which means that it is highly reactive and tends to form positive ions by losing this electron in chemical reactions. Chlorine, on the other hand, has seven valence electrons in its outer shell and tends to form negative ions by gaining an extra electron in chemical reactions.

When sodium and chlorine react, they transfer an electron from the outer shell of sodium to the outer shell of chlorine. This transfer leads to the formation of sodium chloride, which is a stable compound that is commonly known as table salt.

The transfer of the electron allows both atoms to achieve a more stable electron configuration, with sodium attaining a full outer shell of electrons and chlorine attaining an octet of electrons.

2Na + Cl2 --> NaCl

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Glyphosphate, lindane, 2,4-d, chlordane are the organic compound that have chlorine in common.

What is Organic compound is  that organic compound are group of chemical substance that have the  carbon and hydrogen atoms in which the bonds are covalently linked together.SOCs are organic (carbon-based) compounds created by humans. They serve as defoliants, fuel additives, insecticides, and building blocks for other organic compounds. Atrazine, 2,4-D, dioxin, and polychlorinated biphenyls are a few of the most well-known SOCs (PCBs).

Therefore the  Glyphosphate, lindane, 2,4-d, chlordane are the  organic compound that have chlorine in common and these chemicals are  also use as herbicides that is to kill weeds, or to kill insects or pests because of  the chlorine present inside it.

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12.0 grams od n2 & 15.0 gram of ar are present in a gas mixture with a pressure head of 1.32 atm. 0.704 atm is the pressure drop of n2.

Another of the fundamental observable characteristics of the this phase of matter, pressure (P) is understood to be the force of all gas particulate interactions divided by the size of the wall.

Pressure has a major impact on every aspect of our life, from of the weather to flying. It is particularly crucial during chemical reactions. Chemists can compel chemical reactions to happen and hasten the transitions among solids, fluids, or gases by adjusting pressure.

N=12.0, Ar=15.0

Total pressure=1.32

Partial pressure= n2

WN₂=12.0

WAr =15.0

nN₂=12/28 =0.42

nAr=15/40 =0.37

Xn₂=0.42/0.42+0.37 =0.53

Pn=Xn2×Ptotal

=0.53×1.32=0.69atm that ie nearly equal to 0.7atm.

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SIADH is a condition in which high levels of a hormone causes the body to retain water and Hyponatremia occurs when blood sodium level is 123 meq/L.

Treatment that is prescribed for SIADH is fluid and water restriction. Certain medications that inhibit the action of ADH is also included in treatment.

Blood sodium level is said to be normal if it's 135 to 145 milliequivalents per liter. It is hyponatremia, if sodium level is below 135 mEq/L, then

When the sodium level in the blood is too low then extra water goes into your cells and makes them swell. Treatment may include: Intravenous sodium solution to slowly raise the sodium levels in your blood and also some medications to manage the signs and symptoms of hyponatremia.

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Hydrocarbons are molecules consisting of both hydrogen and carbon reacts with oxygen in a combustion Reaction.

A combustion reaction occurs when oxygen gas (O2) reacts with certain types of compounds. We often call the other compound fuel. A more familiar term for combustion reactions is burning. The most common products of combustion reactions are carbon dioxide and water. Combustion is a high-temperature exothermic (heat releasing) redox (oxygen adding) chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. When a fuel is burned, oxygen in the combustion air chemically combines with the hydrogen and carbon in the fuel to form water and carbon dioxide, releasing heat in the process. Hydrocarbons reacts with oxygen as it has both hydrogen and carbon.

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Cobalt will form strongest metallic bond among lithium, magnesium, silver, copper and iron.

The bond with the highest attraction between the particles is the strongest bond. The main factors that can influence the potency of the metal to metal attraction. First, the bond becomes stronger the more valence electrons a metal has. The additional electrons will strengthen the overall forces that attract the positive ions. The quantity of unpaired electrons affects how strong a metallic connection is. The bond strength increases with the amount of unpaired electrons. Cobalt exhibits greater bonding as a result of having the most unpaired electrons.

Hence, cobalt form strongest metallic due maximum unpaired electrons

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Ionic Compounds have high boiling point compare to covalent bon due to presence of electrostatic force.

Ionic bonds, also known as electrovalent bonds, are created in chemical compounds when ions with different charges attract one another electrostatically. When the valence (outermost) electrons of one atom are permanently transferred to another atom, a bond of this sort is created. If an atom receives electrons, it generates a negatively charged ion (cation), and if it loses electrons, it forms a positively charged ion (cation) (anion).

The best examples of this sort of chemical are those created when alkali and alkaline-earth metals are combined with nonmetals. Ionic bonding results in the formation of electrovalent or ionic molecules. The electrostatic forces of attraction between opposing charges and repulsion between similar charges are what keep the ions in these specific types of ionic crystalline solids aligned.

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From the Lewis structures of the compound, the formal charge is -1 and rests on the nitrogen atom.

We know that the formal charge has to do with the charge that the specie appears to have. We have to look at the structure and consider the number of the electron pairs on each of the elements in the compound and then this would help us to be able to decide the formal charge that would be on each structure.

Hence, upon a careful consideration of the structures we can see that the formal charge that can be found on each of the structures for the hydrogen cyanide is -1 and we are now faced with deciding the atom that should carry this formal charge.

Given that the nitrogen atom is more electronegative than the carbon atom then the negative charge ought to rest on the nitrogen rather than on the carbon atom.

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The Li metals will lose an electron to resemble the next lowest noble gas thus, all the Lithium metals form +1 ions.

Lithium typically has two valence electrons after losing one electron to adopt the electron configuration of the nearby noble gas, helium. Atoms can fulfil the requirements of the octet rule in one of two ways. By exchanging valence electrons with other atoms, for example.

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The major organic product will be 3, 4 di-methyl pentane.

Chemical processes involving organic molecules are known as organic reactions. The fundamental kinds of organic chemistry reactions include redox reactions, oxidative degradation, pericyclic reactions, elimination processes, as well as substitution reactions.

In the given reaction the starting material is a 5 carbon chain where carbon 2 has a hydroxy substituent and carbon 3 has two methyl substituents. The alcohol is heated to 170 degrees C in 85 percent H3PO4 to form the product. The final product will be 3, 4 di-methyl pentane.

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The option(C) is correct, 55.9 g

What is mass?

The amount of matter in a substance or an object is quantified by its mass. Smaller masses can be measured in grammes, but the kilogramme (kg) is the standard SI unit for mass (g). You would use a balance to determine the mass.

What is gram?

The gramme (formerly gramme; SI unit sign g) is a unit of mass in the International System of Units (SI) equal to one thousandth of a kilogramme.

1.33moles=mass of NaF41.99g/molmass of NaF=1.33moles41.99g/molmass of NaF=55.85g.

Therefore, option(C) is correct, 55.9 g.

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