How many ions do
lithium chloride, iron(111) oxide ,
Copper sulphate, calcium chloride and zinc hydroxide have (individually)

Answers

Answer 1

One lithium cation Li+ and one chlorine anion Cl- combine to form the molecule. Lithium chloride has a molar mass of 42.39 g/m.

A chemical is what?

A type of matter that has a consistent chemical composition and recognizable properties is referred to as a chemical substance.

A chemical substance cannot be physically separated into its component parts, that is, without rupturing the chemical bonds, according to some.

Simple substances (substances made up of just one chemical element), chemical compounds, and alloys are all examples of chemicals.

Any material with a known composition is considered to be a chemical. So a chemical always contains the same "stuff," to put it another way. Natural substances like water contain certain chemicals. There are also manufactured chemicals like chlorine, which is used in swimming pools or to bleach fabrics.

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Related Questions

In an experiment searching for the photoelectric effect, an incident beam of green light produced no ejected electrons from a metal. In order to eject electrons, the experimenter should?
A. increase the brightness of the light.
B. try blue light.
C. try yellow light.
D. give up on that particular metal.
E. decrease the brightness of the light.

Answers

To remove electrons in the photoelectric experiment, experimenters must try blue light. (B)

Definition of Photoelectric

The photoelectric effect occurs when one of the metal plates is exposed to light, there is a current going to the other metal plate, as has been detected by the ammeter in the circuit above.

The ability of light to move electrons depends on its frequency. So if for example the light intensity is small but the frequency is large, the electrons will still be able to escape.

The energy that causes this movement of electrons is from the electromagnetic waves of light.

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if the proton would not hit one of the plates, what would be the magnitude of its vertical displacement as it exits the region between the plates?

Answers

The magnitude of vertical displacement is 2.73×10−6m as it exits the region between the plates.

The electron narrowly escapes impacting the top plate as it travels between the charged plates and feels an upward pull.

Due to its slower acceleration and higher mass, the proton won't hit any plates.

To calculate the vertical displacement as the object exits the plates, we once more use the kinematic equations.

The electron feels a force upward as it passes between the charged plates and narrowly avoids striking the top plate. It just misses the to plate by a small amount as it moves higher.

The distance it travels in the y-direction is 0.005m.

Time of flight is t=0.0200m1.60×106ms−1 =1.25zz10−8s

the initial y-velocity is zero.

so, 0.005m=12a(1.25×10−8s)2

or, a=6.40×1013ms−2

But also a=Fm= eEme

E= (9.1×10−31kg)(6.40×1013ms−2)1.60×10−19C =364NC−1

The proton will accelerate less and miss the plates since it is more massive. We once more utilise the kinematic equation to determine the vertical displacement when it occurs for the plates.

y=12at2=12eEmp(1.25×10−8s) =2.73×10−6m

The proton won't collide with a plate because, despite the fact that the electric force felt by the proton and electrons is identical, the electric force produces a smaller acceleration that is significantly greater than g, making it plausible to disregard gravity.

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Complete question is:

If the proton would not hit one of the plates, what would be the magnitude of its vertical displacement as it exits the region between the plates?

if gold’s density is 19.32 g/mL, how much would a 0.0333L sample weigh in grams?

Answers

A 0.0333-liter sample of gold would weigh 0.64326 grams.

This is calculated by multiplying the density of gold by the volume of the sample.

the density of gold = 19.32g/ml

the volume of the sample = 0.0333 L

sample weight = the density of gold × the volume of the sample

which is  19.32g/ml  ×  0.0333 L = 0.64326

In chemistry, density is a measure of the mass of a substance per unit of volume. It is typically represented by the Greek symbol "rho" (ρ) and is typically measured in units of grams per milliliter (g/mL) or grams per cubic centimeter (g/cm^3). A substance's density can be calculated by dividing its mass by its volume.

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geologists attempting to locate metallic mineral resources such as copper and iron will first consider the ____ of the rock and how it formed.

Answers

Minerals can be located using geochemical surveys and remote sensors that analyze satellite images. Following that, mining or quarrying is used to remove many minerals.

What do you do to find mineral resources first?Search for Potential Deposits, Locating areas that are likely to contain mineral deposits is one of the first steps in the exploration process. Prospective areas might be close to other known mineralization areas or to active mine sites because mineral deposits frequently form in clusters.Minerals can be located using geochemical surveys and remote sensors that analyze satellite images. Following that, mining or quarrying is used to remove many minerals. Pumping, however, can be used to extract liquid minerals like oil or gas.When choosing which deposit to pursue, some factors include the deposit's location and shape, the rock's strength, the grade of the ore, the costs associated with mining it, and the commodity's current market price.                    

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Which is the larger particle. Na (a) or Na+ (b)

Answers

The larger particle is Na (a) and not Na+ (b).

What is an atomic particle?

All matter consists of atoms that contain a nucleus and orbiting electrons. The nucleus consists of two kinds of atomic particles called protons and neutrons, collectively known as nucleons.

The protons has a mass of 1.67 × 10−27 kg and a positive electronic charge of 1.6 × 10−19 coulombs (C).

So from the question, The atomic number of Na is 10 and electrons' count is also 10. The atomic number of  Na+ is 10 and electrons' count is 9.

This means that In Na+, the same effective nuclear charge is acting on less number of electrons compared to Na. so, the attraction will be more.

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Why do we not just calibrate the gas thermometer at absolute zero? - Waiting for equilibrium at absolute zero would take much more time than is available - Measuring absolute zero requires liquid deuterium for coolant which is expensive - Absolute zero cannot practically be produced in any lab setting - Condensation of water vapor in the lab would raise the temperature

Answers

We do not just calibrate the gas thermometer at absolute zero because absolute zero cannot practically produced in o any lab setting.

Reason -

In order to cool a substance to absolute zero (-243-15°C), an unlimited amount of work would be required to remove the heat from it. Therefore, it is essentially impossible to create an environment with an absolute zero temperature.

Because absolute zero cannot effectively be manufactured in any lab setting, we cannot calibrate our thermometer at that temperature due to letter C. Since we cannot create absolute zero,

a thermodynamic system has its lowest energy at absolute zero degrees Celsius. It is equivalent to 459.67 degrees Fahrenheit and 273.15 degrees Celsius, respectively, on the thermometer.

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When magnesium (mg) metal is burned in the presence of oxygen (o2), magnesium oxide (mgo) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is.

Answers

Magnesium oxide (MgO) is created as a Compound when magnesium (Mg) metal is burnt in the presence of oxygen (O2).

Describe a compound.

A compound is a chemical that is created when two or more other substances are combined. When substances interact, they generate compounds by forming bonds and joining together. Fixed ratios are used to blend the chemical components.

Magnesium oxide is a chemical that is created when magnesium (metal) and oxygen (O) are united. In this combination, the proportions of magnesium and oxygen are equivalent. These elements' various traits came together to create this compound property.

The total number of atoms in a compound's molecule is indicated by the molecular formula.

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The positively charged center in an atom is called as:A. NucleusB. NeutronsC. ProtonsD. Electrons

Answers

The positively charged center in an atom is called as Nucleus. It is made up of positively charged protons and neutral sub-atomic particle called as neutrons.

What is meant by protons ?

Every atom has a proton, a subatomic particle, in its nucleus.The particle possesses an electrical charge that is positive and opposite to the electron's.A subatomic particle with a negative charge is an electron. A subatomic particle having a positive charge is called a proton.The strong nuclear force holds protons together in the nucleus of an atom. A particular subatomic particle with no charge is the neutron.Although protons were once thought of as elementary particles, the Standard Model of particle physics now recognizes them as composite particles made up of three valence quarks, and they are grouped alongside neutrons as hadrons.

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Help me Please!!!!!!!!

Answers

In order to heat 7.40g of water to a higher temperature, 526.35 joules of heat energy are needed.

How is heat energy measured and calculated?

Q = m•C•ΔT, Where Q is the amount of heat that is transported to or from the item, m is the object's mass, C is the material's specific heat capacity, and T is the change in temperature that results as a result.

7.40g of water needs 526.35 joules of heat energy to reach the desired temperature.

According to the following formula, the amount of energy is expressed:

The specific heat of water is 4.184 J/g0C and its mass is 7.40 grams.

In the formula, replace the specified parameters with:

In order to heat 7.40g of water to a higher temperature, 526.35 joules of heat energy are needed.

In order to heat 7.40g of water to a higher temperature, 526.35 joules of heat energy are needed.

The complete question is,

The temperature of 7.40g of water must be raised from 29.0 OC to 46.0 OC. Calculate the joules of heat energy needed to do so. 4.184 J/gOC for water's specific heat.

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The 400.0g of water requires 526.35 joules of heat energy.

What is heat energy?

The formula,

Q = m•C•T, where Q is the amount of heat transported to or from the item, m is the mass of the object, C is the specific heat capacity of the material, and T is the temperature change as a result.

To reach the desired temperature, 400.0g of water requires 526.35 joules of heat energy.

The amount of energy is expressed using the following formula:

Water has a specific heat of 0.664 J/g0C and a mass of 400.0 grams.

Replace the specified parameters in the formula with:

526.35 joules of heat energy are required to heat 400.0 g of water to a higher temperature.

526.35 joules of heat energy are required to heat 400.0g of water to a higher temperature.

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The actual volume of molecules of gas is negligible as compared to the total volume of gas since:
a A large volume is occupied by empty spaces
b A fewer number of molecules are present
c Both A and B
d None of the above

Answers

The actual volume of molecules of gas is negligible as compared to the total volume of gas since C. Both A and B.

The Ideal Gas LawThe actual volume of molecules of gas is negligible as compared to the total volume of gas because the majority of the gas is made up of empty spaces. The gas is composed of discrete particles, or molecules, that are separated by a tremendous amount of empty space, and the number of molecules present is incredibly small compared to the total volume of the gas. When a gas is confined to a container, the number of molecules within the container is fixed, and the volume of the container is also fixed. However, the spacing between the molecules is not fixed and can be manipulated. Since the total volume of the container remains the same, but the spacing between the molecules can be changed, the actual volume of molecules present is negligible as compared to the total volume of the gas.This phenomenon is known as the Ideal Gas Law, and it states that the pressure of a confined gas is directly proportional to its temperature and inversely proportional to its volume. The greater the temperature, the more energy the molecules have and, consequently, the closer they are to each other. This means that the actual volume of molecules present is much smaller than the total volume of the gas.Therefore, the actual volume of molecules of gas is negligible as compared to the total volume of gas because the majority of the gas is made up of empty spaces and the number of molecules present is much smaller than the total volume of the gas.

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What are valence electrons

Answers

The electrons present in the outermost shell experience less nuclear force because the distance between them and the nucleus is greater.These electrons are called valence electrons

Answer:

Valence electrons are electrons located in the outermost energy level (Responsible for bonding.)

Explanation:

Hope this helps :)

the questiojn is need answere please

Answers

The one case that the surroundings do work on the system is q = -17 KJ, w = + 58 kJ. The correct option is A.

What is work done in a system?

As work is negative, it indicates that the system is doing the work because when the system works, energy is expended and volume rises.

If the work is constructive, the system is being worked on because it is absorbing energy and its volume is decreasing.

Work = Force Distance is the formula for calculating work. The joule (J), sometimes known as the Newton meter (N m), is the SI unit for work.

Therefore, the correct option is A. q = -17 KJ, w = + 58 kJ.

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How many molecules are the in 1.8g of water molecules

Answers

Answer:

6.022 x [tex]10^{22}[/tex] molecules

Explanation:

One mole of any substance has 6.022x [tex]10^{23}[/tex] particles.

Mr of water: 16 + 2 = 18 g

moles of water given: 1.8/18 = 0.1 moles

Using ratio:

moles   :   molecules

   1        :    6.022x [tex]10^{23}[/tex]

 0.1      :          X

X = 0.1 x (6.022x [tex]10^{23}[/tex] )

X = 6.022 x [tex]10^{22}[/tex]

AE=mcAT
AT=(Tr-T)
c=Specific Heat
AE= Heat Energy / Heat Gain or Loss
The specific heat of water is 4.2 J/g°C. If you have 10 g of what how much energy has to be lost to lower the
temperature from 25°C to 10°C?
-49.2 J
O-630 J
1 point
-1,470 J
O-10,500 J

Answers

Δt = 25°C - 10°C = 15°C

c = 4.2 J g^-1 °C^-1

m = 10 g

Heat energy required

= mcΔt

= 10×4.2×15

= 630 Joules

PLEASE HELP ASAP!!!!
ANSWERS FOR THE LAST PHOTO
W
X
Y
Z

Answers

The number of neutrons of a pottasium atom with mass number of 39 is 20. The number of neutrons in an atom of lead with mass number 207 and atomic number 82 is 125.

How to find the number of neutrons in an atom?

An atom is made up of three subatomic particles namely; protons, neutrons and electrons.

The proton is the positively charged particle in the nucleus of the atom while the electron is the negatively charged particle surrounding the nucleus.

The number of neutrons can be calculated by subtracting the atomic number of the element from the mass number.

In question 1 of the above image, no of neutrons = 39 - 19 = 20 neutronsIn question 2, no of neutrons = 207 - 82 = 125 neutrons

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draw the structure of the organic product or products formed in the reaction.

Answers

H2C=CH-CH=CH-CH2-Mg-Br   + D2O------ H2C=CH-CH=CH-CH2-D   + DO- Mg-Br, H2C=CH-CH=CH-CH2-Mg- Br is Grignard reagent , it is highly polar in nature so it is highly reactive.

mecanism

H2C=CH-CH=CH-CH2-Mg- Br is Grignard reagent , it is highly polar in nature so it is highly reactive               .

H2C=CH-CH=CH -CH2-Mg-Br------ H2C=CH-CH=CH -CH2- + Mg+-Br

H2C=CH-CH=CH -CH2-  that intermediate show resonance so become more product.

H2C=CH-CH=CH -CH2-  <-----> H2C=CH-CH--CH=CH2 <-----> -CH2-CH=CH-CH=CH2

So two product possible

D2O----- OD- + D+

product1-    H2C=CH-CH=CH2 -CH2- + D+----      .H2C=CH-CH=CH-CH2-D major product

product2-   H2C=CH-CH--CH=CH2 +  D+-----   H2C=CH-CHD-CH=CH2

step-2 Mg+-Br + OD----- DO- Mg-Br

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The complete question is:

draw the structure of the organic product or products formed in the reaction.

When a 15. 0 g ring aborb 35. 0 J of heat, it temperature increae by 10 degree celiu. The ring i mot likely made of?

Answers

Answer:

Gold in a wedding ring

Explanation:

I think this is the answer. Im sorry if its wrong

How many grams are in 2. 0 moles of H2O?.

Answers

Answer:

36g

Explanation:

H2 = 2

O = 16

18 = Mr of H2O

mass = moles x Mr

mass = 2 x 18

mass = 36g

How many Br- ions are present in 1.00 moles of FeBr3? a. 1.81E24 b. 6.02E23 c. 6.02E25 d. 12.04E23

Answers

B) The number of Br- ions present in 1.00 moles of FeBr3 is 6.02E23.

To find the number of Br- ions present in 1.00 moles of FeBr3, we need to first determine the number of moles of Br- ions present in the compound. FeBr3 is a compound that contains 1 Br- ion per formula unit.

To find the number of moles, we can use the formula:

moles = number of atoms / Avogadro's number (6.02E23)

The number of moles of Br- ions in 1.00 moles of FeBr3 is:

1.00 moles x (1 Br- ion / 1 formula unit) = 1.00 moles

So, the number of Br- ions present in 1.00 moles of FeBr3 is 6.02E23 ions.

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help mi plssneed it now​

Answers

The molar mass of a material is its mass expressed in grams per mole of the chemical.

What is meant by molar mass?

The ratio between a sample's mass and its substance content is known as the molar mass of a chemical compound in chemistry. A substance's molar mass is a bulk attribute rather than a molecular one.

A substance's molar mass is its mass in grams per mole of the chemical. A mole is the measurement of the quantity of atoms, molecules, or ions in a substance.

You may determine the mass of 1 mole of a compound by looking at its molar mass. In other words, it provides the amount of grams in a substance per mole. As a result, molar mass is measured in grams/mole.

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Hello can someone please help with this it on Construction Notes and Bill Nye. HELP PLEASE

1. A suspension __________________________ is a structure.

2. Tension is the push / pull on an object, for example a rope (circle one).


3. Just about__________________________ is a structure.


4. Structures have form and__________________________.


5. The force of weight in __________________________ and domes is spread out.


6. Bowls, stadiums, and The Capitol are examples of__________________________.


7. Hammers and other tools are / are not structures (circle one).


8. Structures need support / relief to keep them up (circle one).


9. The part of a flag that is in tension is the_________________________.


10. ____________________ bricks make good structures.

Answers

The answers are:

A suspension bridge is a structure.Tension is the pull on an object, for example a rope.Just about everything is a structure.Structures have form and function.The force of weight in arches and domes is spread out.Bowls, stadiums, and The Capitol are examples of domes.Hammers and other tools are not structures.Structures need support to keep them up.The part of a flag that is in tension is the rope.Solid bricks make good structures.

What are the statements about?

A suspension bridge is a type of structure that is supported by cables or chains that are attached to towers. The cables or chains are under tension and the roadway is suspended from them. Suspension bridges are typically used to span large distances, such as over rivers or valleys.

Tension is the pull on an object, for example a rope. It is a force that tries to stretch or elongate an object. In the context of structures, tension is an important factor that engineers need to consider when designing and building structures.

Therefore, Just about everything can be considered a structure if it has a form and serves a purpose. A structure can be a man-made object such as a building, bridge, or dam, or a natural feature such as a mountain or a cave.

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What is the minimum temperature required for pork in hot holding?

Answers

Pork must be held in hot holding at a minimum temperature of 135°F.

Between 42°F and 134°F, food is deemed to be in the "Danger Zone". The microorganisms that cause food related disease grow swiftly in food stored in the "Danger Zone" temperature range. Foods that are kept hot must always be kept at 135 degrees or higher.

The recommended storage temperature for hot meals is 135 degrees Fahrenheit or higher. Here are some suggestions for keeping hot meals safe: Never reheat food in a hot holding appliance. Food should be cooked to a safe temperature before being stored. Aseptic canning, also known as high-temperature-short-time (HTST) processing, is the process of filling presterilized containers with a sterile, cooled product and sealing them in a sterile environment with a sterile cover.

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Is dissolving a chemical change or physical change?

Answers

Dissolving a substance is considered a physical change.

When a substance dissolves in a solvent, the particles of the substance are dispersed throughout the solvent and become evenly distributed, but the chemical composition of the substance does not change. The dissolved substance retains its chemical properties and can be separated from the solvent by physical means such as evaporation or distillation.

A chemical change, on the other hand, involves a change in the chemical composition or properties of a substance. It typically involves the formation of new substances, the breaking or making of chemical bonds, and the release or absorption of energy. Examples of chemical changes include combustion, rusting, and acid-base neutralization.

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chemically, the three layers of the Earth's interior, stated in order from center to surface, are the(1)

Answers

The three layers of the Earth's interior, stated in order from center to surface, are the core, mantle and the crust.

What is Earth?

Earth is the planet we live on, one of eight planets in our solar system and the only known place in the universe to support life. Earth is the third planet from the sun, after Mercury and Venus and before Mars. It is about 150 million kilometers (about 93 million miles) from the sun. This distance, called an astronomical unit (AU), is a standard unit of measurement in astronomy. Earth is one AU from the sun.

The planet Jupiter is about 5.2 AU from the sun—about 778 million kilometers (483.5 million miles). Earth is the largest and most massive of the rocky inner planets, although it is dwarfed by the gas giants beyond the Asteroid Belt.

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how do silica tetrahedra bond in silicate minerals?

Answers

Quartz silica tetrahedra (SiO2) are linked in a "perfect" three-dimensional framework. Each tetrahedron is connected to four other tetrahedra (with one oxygen shared at each corner),

The silicon-to-oxygen ratio is one-to-one. The silicon atom's outer shell includes four electrons. Each of the four electrons in the silica tetrahedra is shared with one of the four oxygen atoms that are linked. In turn, each oxygen atom shares one of the six electrons in its outer shell. Two single chains of silica tetrahedra join together by sharing the third oxygen in alternating tetrahedra to produce an atomic structure. A kind of silicate mineral in which silica tetrahedra are arranged hexagonally. The quartz silica tetrahedra (SiO2) are connected in a "perfect" arrangement. Framework in three dimensions. Each tetrahedron is connected to four other tetrahedra (with one oxygen shared at each corner),

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How much energy do data centers consume?.

Answers

According to recent surveys, data centers worldwide consume up to 3 percent of all electrical energy generated worldwide.

Data centers are responsible for a significant portion of the world’s energy consumption. This number is expected to grow as the demand for data storage and compute power continues to increase.

Data centers also need a steady supply of cooling to keep the equipment running efficiently, adding additional strain on the energy grid.

To make the most of this energy, data centers are increasingly turning to renewable energy sources such as solar and wind, as well as cutting-edge technologies such as artificial intelligence and machine learning to reduce consumption.

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how many chlorine atoms are in the compound fe2cl3

Answers

There are three chlorine atoms in each FeCl3 molecule. In terms of the total number of atoms in the molecule ferric chloride, there are four.  chlorine atoms are in the compound fe2cl3.

Chlorine atoms molecules are made up of two atoms (Cl2). Except for the lighter noble gases, chlorine interacts with practically all elements to form chlorides; those of most metals are ionic crystals, whilst those of semimetals and nonmetals are mostly molecular. Chlorine has an atomic mass of 35.45 and an atomic number of 17, implying that one atom of chlorine has 17 protons, 17 electrons, and 18 neutrons. Chlorine, being a member of the Periodic Table's halogen family, is particularly reactive with metals and creates salts. When the element chlorine (a halogen) obtains an electron or when a molecule such as hydrogen chloride is dissolved in water or other polar solvents, it is produced. Sodium chloride and other chloride salts are frequently extremely soluble.

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What is the boiling point, in °C,
of a 0.743 molal aqueous
solution of KCL?
BP(water) = 100 °C
Kb (water) = 0.512 °C/m
[?] °C

Answers

The boiling point in °C, of a 0.743 molal aqueous solution of KCL is 100.761 ∘ C

What is the boiling point, in °C?

Δ T b≡ T b − T * b = I K b m ,

where:

The difference between the solution's boiling point, T b, and the pure solvent's boiling point, T * b, in degrees Celsius, is known as T b.

The van't Hoff factor, or the actual number of solute particles in solution, is denoted by the letter i.

The water boiling point elevation constant is K b = 0.512 C/m.

mol solute/kg solvent is the solution's molality, or m. Does the solute have a high or low volatility?

Considering complete dissociation.

KCl ( a q ) → K + ( q ) + Cl − ( a q )

Additionally, 1+1=2i, thus...

T b = T * b + i K b m

= 100 ∘ C + 2 ⋅ 0.512 ∘ C/m ⋅ 0.743 m

= 100.761 ∘ C

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a molecule composed of a metal atom and a nonmetal atom

Answers

A molecule composed of a metal atom and a nonmetal atom is known to be an 'ionic compound'.

Ionic compounds are usually formed when a metal reacts with a nonmetal. An ionic compound is formed between metal atoms and non-metal atoms, where the atom of metal loses an electron to complete its octet, and the atom of non-metal gains that electron to complete its octet. The resulting ionic compound has a stiff, strong, and frequently crystalline solid bond structure. The most common example of an ionic compound is NaCl (sodium chloride).

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how many atoms are contained in 1 mole of hydrogen molecule

Answers

The number of atoms contained in 1 mole of the hydrogen molecule is  12.044 x 10^23.

The International System of Units uses the mole as the unit of material quantity. How many elementary entities of a particular substance are present in an object or sample is determined by the quantity of that material. It is specified that the mole contains exactly 6.022 × 10^23  elementary entities.

The molecular formula for hydrogen is H2. So there are two atoms in the molecule of hydrogen. One mole of hydrogen molecule contains 6.022x10^23 hydrogen molecules.

This number 6.022×10^23 is called Avagardo Number. This is a constant value. Since there are two hydrogen atoms in a hydrogen molecule hence, one mole of H2 molecule contains (2 x 6.022 x 10^23 = 12.044 x 10^23) atoms.

Therefore, The number of atoms contained in 1 mole of the hydrogen molecule is  12.044 x 10^23.

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