Ionic compounds are different from covalent compounds because they do not share electrons is it true or false

E-mail is usually a poor choice for the distribution of sensitive electronic files because e-mail is saved on that server which transfers it.

What is E-mail?

Electronic mail, also known as email or e-mail, is a way for individuals to communicate with one another using electronic devices. At a time when "mail" solely referred to physical mail, email was therefore developed as the electronic (digital) equivalent of, or counterpart to, mail (hence the prefix e- + mail).

In many realms of business, trade, government, education, entertainment, and other aspects of daily life in most countries, an email address is now frequently seen as a vital and necessary element.Later, email developed into a ubiquitous (very popular) communication method.

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The polarity arrow should point away from the central sulphur atom.

A polarity arrow indicates the direction of the atom with the greater electronegativity.

Electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

An electron configuration of sulfur atom: ₁₆S 1s²2s²2p⁶3s²3p⁴

An electron configuration of chlorine atom: ₁₇Cl 1s² 2s² 2p⁶ 3s² 3p⁵

In the molecule SCl₂, a chlorine (λ=3) is more polar than a sulfur (λ=1.8).

An arrow points from sulfur (S) toward chlorine (Cl), since it has a greater electronegativity than sulphur (see the picture below).

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In addition, the sodium-potassium pump activates integrators that regulate the Mitogen-Activated Protein Kinase (MAPK) Pathway, intracellular calcium, and reactive oxygen species. The majority of the ATP produced by human cells is used to maintain sodium (Na+) and potassium (K+) concentration gradients.

Sodium and potassium move in the opposite direction of the concentration gradients. The Na+ K+-ATPase pump maintains a gradient of higher sodium concentrations extracellularly and higher potassium levels intracellularly.

The sodium-potassium pump is a cellular mechanism that transports sodium and potassium ions in opposite directions against a concentration gradient using Adenosine triphosphate (ATP). The pump mechanism's purpose is to keep the potassium ion concentration constant.

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Answer:

Metals tend to be hard, metallic-looking solids, with high electrical and thermal conductivity values and high melting and boiling points. Nonmetals tend to be softer, often colorful elements. They may be solids, liquids, or gases.

Answer: Metals are hard and have high melting and high boiling points and high electrical and thermal conductivity values and nonmetals are softer and are substances like solids,liquids,or gases.

The carbon footprint of a solar panel is around 20 times lower than that of a coal-powered electrical source. As a result, as soon as you install solar power in your home, your carbon footprint will go down.

As we work to make the planet greener, solar carbon footprints are a hot topic in the field of renewable energy. Even if solar energy reduces carbon emissions in thousands of homes every day, the manufacture of solar panels can have a sizable impact on the environment.

In this article, the carbon footprints of solar panels and the amount of CO2 saved by solar energy will be compared. solar emissions and their alternatives, solar footprints, and some modern approaches to reducing carbon footprints.

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A solar panel's carbon footprint is around 20 times smaller than that of a coal-powered electricity source.

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When you purchase 0.500 gallon of milk, 7.89mL of milk are there in the container

Unit of liquid capacity equal to four quarts or 231 cubic inches or 3.785 liters called gallon. here 1 gallon = 3.785 l and you purchase 0.500 gallon so multiply the no of cubit feet by 7.47 then and here

volume is 8 then 8×7.47=59.76 so  

1 gallon = 3.785=59.76÷3.785=15.78

15.78×0.0500gallon=7.89ml

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Answer:

NaCl: sodium chloride.

NaBr: sodium bromide.

NaF: sodium fluoride.

NaI: sodium iodide.

KF: potassium fluoride.

Explanation:

Hope this helps!

3.45g sulfuric acid will be present in the mixture after the reaction is complete.

H₂SO₄ (aq) + Pb(CH₃COO)₂ (aq) ⇌ PbSO₄ (s) + 2 CH₃COOH (aq)

1 mole of sulphuric acid reacts with 1-mole lead(II) acetate to give 1-mole lead(II) sulfate and 2-mole acetic acid.

Mass of lead acetate reacting = 5.00g

Mass of sulphuric acid reacting = 5.00 g

Now, calculating the no. of moles of each reactant involved:

No. of moles = [tex]\frac{Given mass of substance}{Molar mass of substance}[/tex]

Moles of sulphuric acid = [tex]\frac{5.00g}{98.08g}[/tex]  

                                       = 0.510 mol

Moles of lead acetate = [tex]\frac{5.00g}{325.29g}[/tex]

                                    = 0.0158 mol

Thus,  0.0158 moles of lead acetate will react with 0.0510 moles of sulphuric acid to give 0.0158 moles of lead sulfate and 0.0158 × 2 = 0.0316 moles of acetic acid.

Therefore, only 0.0158 moles of sulphuric acid will react.

So, the remaining moles = 0.510 - 0.0158

                                         = 0.0352 mol

Remaining mass of sulphuric acid = 0.0352 × 98.08

                                                        = 3.45g

Hence, 3.45g sulfuric acid will be present in the mixture after the reaction is complete.

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Solutions of sulfuric acid and lead (II) acetate react to form solid lead (II) sulfate and a solution of acetic acid, 5.00 g of sulfuric acid, and 5.00 g of lead(II) acetate are mixed. Calculate the number of grams of sulfuric acid present in the mixture after the reaction is complete.

Carbon (C) contains the largest number of moles.

Number of Moles of a substance can be defined as the ratio of given mass of the substance to the Molecular Mass of the substance.

We can write,

Number of moles = Given Mass / Molecular Mass                euation1

Given Mass of Na, C, Pb, Cu, Ne each = 10.0g

Molecular mass of Na = 22.9898 u

Molecular mass of C = 12u

Molecular mass of Pb = 207.2u

Molecular mass of Cu = 63.546 u

Molecular mass of Ne = 20.1797 u

After substituting the values of molecular mass and given mass of elements in equation1 , we will get

Number of moles of Na = (10/22.9898) = 0.4350

Number of moles of C = (10/12) = 0.8333

Number of moles of Pb = (10/207.2) = 0.0483

Number of moles of Cu = (10/63.546) = 0.1574

Number of moles of Ne = (10/20.1797) = 0.4955

So, we can clearly see that Carbon contains the largest number of moles.

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Answer:

nitrogen

(He) 2s2 2p3

aluminium

(Ne) 3s2 3p1

chlorine

(Ne) 3s2 3p5

The molar mass of element X is 75 g/mol.

m(X₄O₆) = 59.4 g; mass of the compound

m(O) = 14.4 g; mass of oxygen in the compound

n(O) = 14.4 g ÷ 16 g/mol

n(O) = 0.9 mol; amount of oxygen in compound

m(X) = m(X₄O₆) - m(O)

m(X) = 59.4 g - 14.4 g

m(X) = 45.0 g; mass of element X

Ratio of the elements in the compound: n(X) : n(O) = 4 : 6.

n(X) = 0.9 mol × 4 / 6

n(X) = 0.6 mol; amount of element X in the compound

M(X) = m(X) ÷ n(X)

M(X) = 45.0 g ÷ 0.6 mol

M(X) = 75 g/mol; molar mass of element X

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In the biochemistry, Where reactants are normally dissolved in water, The strongest bond or interaction in the water is polar covalent bonds.

Water is a good solvent for polar and ionic compounds. the polarity and hydrogen bonding capability of water makes excellent solvent for polar molecules.In water ionic bonds come apart much more than covalent bonds.

The polarity  of water molecules is what makes a widely good solvent . The positive part of the water molecules attract negative part of solute and negative part of water attract positive part of solute.

Water greatly weaken the electrostatic forces and hydrogen bonding between ionic and polar molecules by competing for their attraction.

Hydrogen bonds are weaker than ionic bond and covalent bonds but stronger than dipole dipole interaction.  

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Answer:

1600 mm to m = 1.6 meters

Explanation:

When a substance moves down its concentration gradient, and energy is used to move another substance up its concentration gradient in the same direction is antiport secondary active transport

The primary active transport establishes the Na+ or H+ gradient. So to move substances against their concentration gradient, secondary transport uses energy derived from the hydrolysis of Adenosine triphosphate (ATP).

Secondary active transport is of two types - symport and antiport. When two or more substances move in the opposite direction using energy, it is termed an antiport. In this, one substance move inside, and another substance moves out of the cell. When two or more substance move in the same direction using energy is called symport. In this, either they are moving inside or out of the cell but move in the same direction.

Therefore, when a substance moves down its concentration gradient, and energy is used to move another substance up its concentration gradient in the same direction is antiport secondary active transport.

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The ionic radius is the distance between the nucleus of the ion up to the electron cloud that overlays the ion.  

The ionic radius is the distance between the nucleus of the ion up to the electron cloud that overlays the ion.  We know that for a metal, the ionic radii  decreases as the  magnitude of charge on the ion increases  while in the case of the negative ion, the ionic radii increases as the magnitude of charge on the ion increases.

Let us now look at the ions as shown;

a)  I^->I> I^+ - This is because the negative ion leads to an expansion of the electron cloud which decreases in the atom and the positive ion.

b) Ca²+ > Mg2+ > Be²+ - Ionic radius increases down the group as more shells are added.

c)  Fe>Fe²+ > Fe³+ - This is because, for a metal, the ionic radii  decreases as the magnitude of charge on the ion increases

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Molarity of a solution prepared by dissolving 3.50 mol nacl in enough water to make 1.50 l of solution is 2.33 mol /L

Molarity is a physical quantity that describes the substance's number of moles available in the unit liter volume of the solution. A mole per liter is a measurable unit to explain molarity.

Number of moles of the NaCl is

np = 3.50 mol

The volume of the solution is np = 1.50 L

The expression for the molarity solution is cm = np/vp

At the value and get the above expression

Cm = 3.50/ 1.50

      = 2.33 mol /L

Thus the molarity of the solution is 2.33 mol /L

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Answer:

235.7 gm

Explanation:

58.933 gm/mole  *  2.408 * 10^24 atoms / (6.022 x 10^23  atoms/mole)

         = 235.7 gm

The 22.7 g  in μg ( micro gram )  is 22.7 × [tex]10^{-6}[/tex] .

We need to convert between units in order to ensure accuracy and prevent measurement misinterpretation.

For example , we do not measure a pencil's length in kilometers . In this situation , one must convert from kilometers  ( km ) to centimeters ( cm ) . In most cases, multiplicative conversion factors are used to convert one unit to another of the same quantity .

Sometimes the units of measurement used may not correspond to the standards required for a particular process or application, as well as the measuring choice and convenience. The mass of object in micro gram unit is less than gram .

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Answer:

This means it is a solid, so a formula is used to measure it. The formula depends on its shape.

You would use a ruler to measure it.

Explanation:

You would use a ruler to measure it:

Ex. Shoebox

Rectangle Volume = length x width x height

V= l • w • h

Ex. Rubix Cube

Cube Volume = length x width x height

since all sides are equal, it is:

V= s3

Submicroscopic events are the structure and behavior of the matter or particle that can use for the macroscopic observations of the matter.

Sub microscopic elements are very minute and small particles that can be only seen by a microscope. These are small particles that together make the big matter.

Macroscopic particles are big particles that are constituted by small particles.

Thus, the structure and behavior of the matter or particle that can be used for macroscopic observations of the matter are submicroscopic occurrences.

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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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The storage location of bile acids is the gall bladder.

Bile acids are made from cholesterol in the liver. Cholic acid  and chenodeoxycholic acid are the major bile acids.

These acids are very crucial for the digestion of dietary fats and fat-soluble vitamins(A, D, E, and K).

The bile that is secreted by the liver passes through the hepatic ducts and is stored and concentrated in a thin muscular sac called the gall bladder.  The bile then reaches the small intestine  where it acts upon the food and helps in its digestion.

Therefore, the instructor determines that the teaching was successful when the students identify the gall bladder as the storage location of bile acids.

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Alcohols (O-H), acids (COOH), or amines (NH2)-polar groups are need to be present in the R group for hydrogen.

This type of functional group contains only hydrogen and carbon as constituent elements. They are commonly represented with ‘R’. They are also called hydrocarbyl groups. The bonding between the carbon atoms can be single, double, or triple.

When we define a functional group, we imply a group of atoms of the same or different elements forming a chemically-active section of a compound and creating a class of new compounds. In organic chemistry, there are many such functional groups. For example, an alcohol group (-OH) defines a particular set of characteristics of the compounds that have it as a constituent. These characteristics will vary from one functional group to the other.

Therefore,

Three function groups  Alcohols (O-H), acids (COOH), or amines (NH2) needs to be present in the R group for hydrogen.

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The empirical formula of emerald is Be3Al2Si6O18.

The empirical formula of a compound tells us about the simplest ratio between the atoms present in the compound.

We are given that emerald consists of 5.030% beryllium, 10.040% aluminum, 31.351% silicon and 53.579% oxygen.

So, we need to first convert the percentages into number of moles of the elements.

Let us assume that there is 100 grams of emerald.

Hence, the mass of each element in it is 5.030 grams beryllium, 10.040 grams aluminum, 31.351 grams silicon and 53.579 grams oxygen.

To calculate the moles, we need to divide their given mass by their molar mass

Moles of beryllium(Be) = 5.030/9 = 0.55

Moles of aluminium(Al) = 10.040/27 = 0.37

Moles of silicon(Si) = 31.351/28 = 1.107

Moles of oxygen(O) = 53.579/16 = 3.34

Now, we need to divide the moles by the lowest common number among them i.e, 0.37.

So, 0.55/0.37 = 1.5

0.37/0.37 = 1

1.107/0.37 = 3

3.34/0.37 = 9

So, the ratio of Be:Al:Si:O comes out to be 1.5:1:3:9.

As the ratio contains 1.5, so we need to multiply it by 2 to get a whole number.

So, (1.5:1:3:9) x 2 = 3:2:6:18

Thus, the empirical formula of emerald is Be3Al2Si6O18.

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The empirical formula of emerald is [tex]Be_{3}Al_{2}Si_{6}O_{18}[/tex].

The empirical formula of a compound tells us about the simplest ratio between the atoms present in the compound.

We are given that emerald consists of 5.030% beryllium, 10.040% aluminum, 31.351% silicon and 53.579% oxygen.

So, we need to first convert the percentages into number of moles of the elements.

Let us assume that there is 100 grams of emerald.

Hence, the mass of each element in it is 5.030 grams beryllium, 10.040 grams aluminum, 31.351 grams silicon and 53.579 grams oxygen.

To calculate the moles, we need to divide their given mass by their molar mass

Moles of beryllium(Be) = [tex]\frac{5.030}{9} = 0.55[/tex]

Moles of aluminium(Al) = [tex]\frac{10.040}{27} = 0.37[/tex]

Moles of silicon(Si) = [tex]\frac{31.351}{28} = 1.107[/tex]

Moles of oxygen(O) = [tex]\frac{53,579}{16} = 3.34[/tex]

Now, we need to divide the moles by the lowest common number among them i.e., 0.37.

So, [tex]\frac{0.55}{0.37} = 1.5[/tex]

[tex]\frac{0.37}{0.37} = 1[/tex]

[tex]\frac{1.107}{0.37} = 3[/tex]

[tex]\frac{3.34}{0.37} = 9[/tex]

So, the ratio of Be:Al:Si:O comes out to be 1.5:1:3:9.

As the ratio contains 1.5, so we need to multiply it by 2 to get a whole number.

So, (1.5:1:3:9) x 2 = 3:2:6:18

Thus, the empirical formula of emerald is [tex]Be_{3}Al_{2}Si_{6}O_{18}[/tex]..

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Li₂SO₄+2H₂O is the result of the balanced chemical reaction, which is 2LiOH+H₂SO₄.

A chemical equation is said to be balanced if the quantity of each type of atom in the reaction is the same on both the reactant and product sides. In a balanced chemical equation, the mass and the change are both equal.

Consequently, the balanced chemical equation is; For a balanced chemical reaction, the number of atoms of a given element on the left hand side should match the number of atoms of that element on the right hand side.

2LiOH+H₂SO₄ → Li₂SO₄+2H₂O

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The main function of a vitamin is to help interaction between two chemicals to occur, changing both chemicals.

In toxicology, synergism refers to the effect caused when exposure to two or more chemicals at one time results in health effects that are greater than the sum of the effects of the individual chemicals.

What are vitamins?

Therefore, the main function of a vitamin is to help interaction between two chemicals to occur, changing both chemicals.

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When heat moves through an object in an assembly that is more conductive than the materials around it, that is described as Conduction.

The substance or material from which things are made or constructed: Stone is a durable material. Raw materials or serving as raw materials for use or development: Pulp is the raw material of paper. each component. Textile fabric: dress fabric.

In our culture, the material is probably more important than we think. Materials affect transportation, housing, clothing, communications, reactions, food production, and nearly every area of ​​daily life. Useful materials have physical, chemical, or biological properties that are useful even after they have served their intended purpose or function, and when removed from solids and separated from waste, are materials suitable for the same or different purposes. Purpose.

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A solution has been prepared with 100 g of drug in 1,000 ml solution mg of drug are in 120 ml of the solution is 12000 mg

1,000 ml solution requires =100g of drug;

1 ml solution requires =100÷1000 g of drug;

                                   = 0.1g of drug;

120 ml solution requires =0.1×120g of drug;

                                       = 12g of drug;

                                        = 12000 mg of drug;

The present clinical use of H2O2 continues to be constrained to the elimination of microbial infection and every now and then hemostasis, better information in the direction of the sterilization ability and cell behavior regulatory characteristic of H2O2 inside wounds will decorate the ability to exogenously augment and control recovery.

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