An element with the electron configuration 1s22s22p63s23p6 has how many electrons?

During the breakdown of fatty acids, not all acetyl CoA enters the citric acid cycle, and your body converts some acetyl CoA to ketone bodies.

Acids are molecules or ions that can donate protons, known as Bronsted-Lowry acids, or form covalent bonds with electron pairs, known as Lewis acids. The first category of acids is proton donors or Brønsted-Lowry acids.

Blood is normally slightly alkaline, with a normal pH range of about 7.35 to 7.45. Normally, the body keeps blood pH near 7.40. Doctors measure a person's acid-base balance by measuring the pH of the blood and the levels of carbon dioxide (acid) and bicarbonate (base). No oil is either an acid or a base. Neutral. Oil is a neutral, nonpolar chemical. That is, it is a viscous liquid at room temperature. It is immiscible with water, but soluble in alcohol and ether.

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The two properties of the atomic structure of copper that make it a good conductor is:

In copper, at normal room temperature, there is enough thermal energy to eject a large number of weakly held valence electrons. Like other metals, copper has a large number of free electrons, which makes it a good conductor of electricity.

In order for current to flow through metal, the current source must fight resistance. The lower the resistivity, the higher the electrical conductivity of the metal. Copper wire is also a good electrical conductor due to its low resistivity.

Other materials sometimes used as conductors are silver, gold, and aluminum. Copper is still the most popular material for wire because it is a very good conductor of electricity and is very cheap compared to gold and silver.

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If 25.0 ml is taken from a stock solution and added to volumetric flask and diluted up to the calibration mark, then the new concentration will be 1.49 g/L.

Now, Concentration of solution is defined as amount of solute present in specific volume of the solution.

Molarity (M) = moles of solute ÷ litres of solution

Here, the concentration of solution is given as, 14.9 g/l

and, the volume of solution is 25.0 ml= 0.025 l

using the equation,

   14.9 = moles of solute ÷0.025

   moles of solute = 0.3725 moles

0.025 l is added to a 0.25 l (250.0 ml =0.25 l) volumetric flask and diluted up to the calibration mark.

Since,

volume of solution = volume of flask

And, moles of solute remains the same.

Therefore,

The new concentration is,

concentration = (0.3725 ÷ 0.25) g/l

New concentration = 1.49 g/l

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To prepare 128.2ml of a 0.364 M aqueous solution of NaCl.the mass in grams, of NaCl need to use to make the solution is 2.723 gm.

Molarity is defined as the no. of moles of solute per liter of solution.

Here,

Molarity =  moles of solute / Liter of solution

0.36 M solution will contains 0.364 moles of NaCl.

therefore, volume of solution in L =  ( 128.2 / 1000 ) L × 1 L

                                                 = 0.1282 L

that means, it will contain, no. of moles of NaCl

= (0.1282 L of solution × 0.364 ) / 1 L of solution      

= 0.0466 moles of NaCl

now, molar mass of NaCl  = 58.44 g/mol    

so, 1 mol of NaCl has a mass of  58.44 g/mol

therefore, 0.0466 moles of NaCl will have mass of

= ( 0.0466 moles of NaCl × 58.44 g ) / 1 mole of NaCl

= 2.723 g

Thus,To prepare 128.2ml of a 0.364 M aqueous solution of NaCl .the mass in grams, of NaCl need to use to make the solution is 2.723 gm.

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In functionalized hydrocarbons, a functional group is attached to the core of hydrocarbons (alkanes, alkenes, alkynes). Some examples are methanol (where the hydroxyl group is attached to methane) and it belongs to the chemical class of alcohols.

In organic chemistry, hydrocarbons are organic compounds made entirely of hydrogen and carbon. Hydrocarbons are examples of Group 14 hydrides. Hydrocarbons are generally colorless and hydrophobic, and their odor is usually faint or exemplified by the liquid odor of gasoline or lighters.

Examples of hydrocarbons include gasoline, kerosene, lamp oil, and furniture oil. If someone accidentally drinks a hydrocarbon product that gets into their lungs, it can cause breathing problems. Severe injury or even death can result. Crude oil is a mixture of relatively volatile liquid hydrocarbons (compounds composed primarily of hydrogen and carbon), but it also contains nitrogen, sulfur, and oxygen.

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The reaction of benzaldehyde with acetone and sodium hydroxide produces DibenzalacetoneThis is an example of an aldol condensation reaction.

A physical reaction is a reaction in which a change in the physical properties of matter or substances occurs. Physical properties include density, mass, and volume. The definition of a physical reaction is a reaction in which molecules undergo molecular rearrangements but do not change chemically.

A response, although technically a reaction, takes into account the desired outcome of the interaction. Reactions can produce positive or negative results, but reactions are designed to produce positive or negative results. To react is emotional, to react is emotional intelligence.

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There are 180 grams of glucose in 1 liter of a 1 M solution.

Blood sugar, often known as glucose, is the main sugar found in your blood. It comes from the food you eat and is used as your body's main energy source. Your blood supplies glucose to all of the cells in your body, which then uses it as fuel.

Diabetes is a disorder when your blood sugar levels are too high.

moles = volume x molarity

moles = 1 L x 1 mol/L = 1 mol

mass = moles x molecular weight

mass = 1 mol x 180 g/mol = 180 g(we know that 180 daltons = 180 g/mol)

Therefore, 1 litre of a 1 M solution has 180 grammes of glucose.

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There are 180 grams of glucose in 1 liter of a 1 M solution.

Calculating:

moles = volume x molarity moles

= 1 L x 1 mol/L = 1 mole mass

= moles x molecular weight mass

= 1 mol x 180 g/mol = 180 g(we know that 180 daltons = 180 g/mol)

Therefore, 1 litre of a 1 M solution has 180 grams of glucose

What can we know about glucose?

Blood sugar, often referred to as glucose, is that the main sugar found in your blood. It comes from the food you eat and is employed as your body's main energy source. Your blood supplies glucose to all or any of the cells in your body, which then uses it as fuel.

Diabetes may be a disorder when your blood sugar levels are too high..

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The ionic compound sodium chloride, also referred to as salt, has the chemical formula NaCl, which denotes a 1:1 ratio of the ions sodium and chloride. The molar weights of 39.34 g Na and 60.66 g Cl in 100 g of NaCl are 22.99 and 35.45 g/mol, respectively.

If 45.98 g of sodium combines with an excess of chloride gas to form 116.89 g of sodium chloride, what mass of chlorine gas is used in the reaction?

116.89 g – 45.98 = 70.91 g of chlorine must have been used.

The characteristics of sodium and chlorine are as follows:

The characteristics of the chemical sodium chloride are as follows:

In light of this, it may be said that sodium chloride possesses wholly unique properties from those of sodium and chlorine.

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Answer:

-182

Explanation:

according to the table it's the answer

According to forces of attraction and given data the substance with lowest melting point is that one with -182°C.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.Thus,the substance with lowest melting point is that one with -182°C.

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Answer:

protons and neutrons

Explanation:

because Neil bohr had described this is his theory

Answer:

hope this help

Explanation:

In Bohr's model, electrons moved around the atomic nucleus in circular orbits, but those orbits had set discrete energies, and electrons could gain or lose energy only by moving from one orbit to another, absorbing or emitting radiation as necessary.

Answer:

Which problem ??

Explanation:

Can you write your problem ??

The difference between ideal gases and real gases are most pronounced under conditions of inter molecular forces.

Difference between ideal gases and real gases are discussed below :

Real gases differ from ideal gases thanks to the presence of inter molecular forces, which cause the molecules of a true gas to deviate from perfect random motion.

As a result, real gases deviate from the perfect gas law at high densities and low temperatures, where the results of inter molecular forces are more pronounced.

So, the difference between ideal gases and real gases are most pronounced under conditions of inter molecular forces.

What are inter molecular forces?

The attractive forces that exist between molecules are liable for many of the bulk physical properties exhibited by substances.An inter molecular force (IMF) (or secondary force) is that the force that mediates interaction between molecules, including the electromagnetic forces of attraction or repulsion which act between atoms and other sorts of neighboring particles, e.g. atoms or ions.

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The correct answer for the final volume read on the graduated cylinder = 4.72 ml ^3 .

density of lead is 11.4g/cm³,

quantity of water = 20.0 mL = 20 gram

sample of lead = 33.9 g

density = mass / volume

total mass = 20+ 33.9 = 53.9

volume = mass/ density

volume = 53.9/ 11.4

volume = 4.72 ml ^3

Graduated cylinders are long, slender vessels used to measure liquid volumes. They are not meant to be mixed, stirred, heated, or weighed. Graduated cylinders typically range in size from 5 mL to 500 mL. It is a tall narrow container with a volume scale used specifically for measuring liquids. These 100 mL glass graduated cylinders are used to accurately and easily measure and dilute liquids! These class-A, lab-quality graduates are built to deliver precise measurements while resisting breakage and a wide range of chemicals. A plastic volume marker is included.

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Analytical chemist analyses show that a sample of acetic acid contains 2.4 moles of carbon. The number of moles of hydrogen in the sample is 5.75 moles.

The mole is a SI unit of measurement that is used to calculate the quantity of any substance. Mole can be calculated by dividing the mass by the molar mass.

Acetic acid is a colorless liquid, with a pungent smell.

The formula of acetic acid is CH₃COOH

For every 12 moles of hydrogen, there's 1 mole of oxygen.

2.4 / 12 = 0.2.

Thus,  therefore, there are 5.75 moles of oxygen in the sample.

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When water is added to a compound in a chemical equation, a new compound can be formed via hydrolysis.

It refers to any chemical process when a water molecule breaks one or more chemical bonds. When water is the nucleophile, the phrase is used generically to refer to substitution, elimination, and solvation processes.

The cleavage of biomolecules known as biological hydrolysis occurs when a water molecule is consumed in order to cause the division of a bigger molecule into its component parts. Scarification is the process of hydrolyzing a carbohydrate into its individual sugar molecules, as occurs when sucrose is broken down into glucose and fructose.

A condensation reaction, in which two molecules combine to form a bigger one and expel a water molecule, can be reversed by a hydrolysis reaction. Thus, condensation builds up by removing water, but hydrolysis breaks down by adding water.

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3.733mol potassium ions are in 5.48 g of potassium sulfate: k2so4

The molar quantity of potassium sulfate:

Here 5.48 g of potassium sulfate and molecular weight of potassium sulfate is 174.27 g/mol  are given so  5.48 g / 174.27 g/mol = 0.031mol

0.031mol potassium sulfate, there are 2×0.031=0.062mol with respect to potassium ion

we multiply this molar quantity by avagadro's no

avagadro's no=6.022×10²³

0.062×6.022×10²³=3.733mol

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Yes, the density of an object change if only the volume changes because density is an intensive property.

Density is the measure of the mass of matter contained by a unit volume.

This suggests that the density of a substance is a function of the mass and volume of the substance.

However, an increase in volume decreases the overall density of an object, making it float.

Therefore, yes, the density of an object change if only the volume changes because density is an intensive property.

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The melting points of the products obtained ranged from 135 to 137, indicating that the compound is probably benzoin since the melting points of the products are very similar to those of benzoin (135 to 137). The melting point range of benzoin is closer to the product than that of hydroxybenzoic acid.

Benzoin is the sap (gum resin) that comes from cuts withinside the trunk of bushes that belong to the Styrax family. Benzoin is used at the pores and skin for ulcers, mattress sores (strain ulcers), cracked pores and skin, and lots of different conditions, however, there may be no correct medical proof to aid those uses.

Benzoin is on occasion referred to as gum benzoin or gum benjamin, and in India Sambrani or loban, aleven though loban is, thru Arabic lubān, a frequent time period for frankincense-kind incense, e.g., aromatic tree resin. Benzoin is likewise referred to as storax, now no longer to be harassed with the balsam of the equal call acquired from the Hamamelidaceae family.

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Ionic compounds are formed from ionic bonds which occur when there is electron transfer, while covalent compounds share electrons. Hence, the answer is true.

Covalent compounds are compounds formed by covalent bonds. Atoms form compounds to achieve a stable electronic configuration. Covalent compounds do this by sharing their electrons. Covalent bonds are weaker than ionic compounds and mostly form gases.

Ionic compounds achieve the stable electronic configuration of noble gases by gaining or giving away their electrons. When this happens, the atoms get attracted to each other by electrostatic forces. Atoms that give away their electrons become positively charged cations and atoms that receive electrons become negatively charged anions.

Therefore, the major difference between ionic compounds and covalent compounds is that covalent compounds share electrons and ionic compounds transfer electrons.

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The main precautions to take if a gas cylinder sign is present in the lab visually check that the gas cylinder is restrained, but keep a safe distance from it. The correct option is c.

Precautions are the preventive steps that are taken to save yourself from any dangerous circumstances. These steps are always taken in doing experiments and other scientific procedures.

Here, the precautions are to check the gas cylinder.

Thus, the correct option is c, Visually check that the gas cylinder is restrained, but keep a safe distance from it.

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The question is incomplete. Your most probably complete question is given below:

Remove the strap from around the gas cylinder to use it in the lab.

Open the valve on the gas cylinder periodically to release pressure.

Visually check that the gas cylinder is restrained, but keep a safe distance from it.

Test out the regulator on the gas cylinder to make sure it is working properly.

There would be 3.91 ×10²² potassium ions in 5.66 g of potassium sulfate.

A molecule is the smallest unit of a substance that retains its composition and properties. It is made up of two or more atoms that are joined together by chemical bonds.

The number of moles of the  k2so4  = mass/molecular mass

                                                            =5.66 /174.27

                                                            =0.032478 moles

The number of the potassium ion in  k2so4  = 2 ×0.032478×6.022 ×10²³

                                                                        =3.91 ×10²² ions

There would be 3.91 ×10²² potassium ions in 5.66 g of potassium sulfate.

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Among the pair of elements given, Cl and F are expected to be the most similar.

On the basis of periodic table,

Cl and F are in the same group which is the halogen group. Thus, they possess similar properties.Of the choices provided, Chlorine (Cl) and Fluorine (F) are the only pair located in the same group while the others belong to different groups in periodic table.

Nitrogen have symbol N and belongs to main group element while Nickel have symbol Ni and belong to transition element. Therefore, they are not similar.

Molybdenum have symbol Mo belongs to transition element and Tin have symbol Sn belongs to main group element possessing different properties.

Sodium have symbol Na and classified as alkali metal while Magnesium have symbol Mg, classified as alkaline earth metals. They do no have similar properties.

Silicon having symbol Si is a metalloid while Phosphorus having symbol P is a non-metal. Thus, they are not similar.

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An oxygen molecule at 25◦C has a speed of 1520 miles/hour.

As we know

1 km = 1000 meter

So,

678  / 1000 = 0.678 km

And 1 mile = 1.6 km

So,

0.678 / 1.609 = 0.4213 miles

We know that 1 hour = 60×60 = 3600 sec

So,

1 sec = 1 / 3600

= 2.777 x 10⁻⁴ hour

Now finding speed,

speed = distance / time

speed = 0.4213 / 2.777 x 10⁻⁴

speed = 1520 miles/hour

Velocity is the rate and direction of an object's movement, whereas speed is the time rate at which an object is moving along a path. In other words velocity is a vector value, whereas speed is a scalar value.

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The mass ratio (Mass of Q/ Mass of A) of the compound A₂Q₃ is 0.861.

Given,

The mass ratio (mass Q)/(mass A) for AQ is 0.574  

We have to find the mass ratio (mass Q)/(mass A) of A₂Q₃.

The mass ratio for  A₂Q₃ is

Mass of Q/ Mass of A = 3 × mass Q/ 2 × mass A

Or, Mass of Q/ Mass of A = (3/2) × (mass Q/ mass A)

Or, Mass of Q/ Mass of A = (3/2) × 0.574

Or,  Mass of Q/ Mass of A = 0.861.

Therefore, the mass ratio for (Mass of Q/ Mass of A) for A₂Q₃ is 0.861.

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Answer:

There are following three ways in which a object can accelerate....

1...speeding up

2.... slowing down

3... changing direction

hope it help you✌✌✌✌✌

Explanation:

Answer:

34.4

Explanation:

You would divide the mg by 1000 to get the number of grams.

A  reaction in which bonds are created is usually associated with the Release of energy.

What are the various types of bonds?

There are three sorts of bonds:

1. Electrovalent or  electrovalent bond

2.  chemical bond

3.  dative bond

Electrovalent or electrovalent bond are formed when one or more electrons are transferred from one atom to another.

Covalent bonds are formed when the atoms during a  molecule share an equal number of electrons.

A dative bond is one in which both electrons in a shared pair come from the same atom.

Now, atoms tend to stabilize once they form chemical bonds, releasing energy within the process. Energy is released because there's a higher level of stability associated with a low energy level.

Hence, a  reaction in which bonds are created is usually associated with the release of energy.

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When the difference between a measured value and the known value is expressed as a percentage error, it is usually written as either negative or positive.

The accepted terminology to introduce differences in measured values during experimentation and data collection is to introduce this difference with the sing based on the first data (either positive or negative).

In conclusion, when the difference between a measured value and the known value is expressed as a percentage error, it is usually written as either negative or positive.

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Ions are any molecules that have a charge. (positive or negative.) Group 1 atoms have 1 valence electron, so their ions are formed by giving away one electron. Group 7 atoms have 7 valence electrons, so their ions are formed by gaining one electron. This process gives the atom a full shell of 8, which makes it stabilized.