Intermolecular forces are all some kind of: lecture 9

Answer: D

Explanation:

if two atoms have the same number of protons, but different numbers of neutrons we refer to them as isotopes.

Isotopes have the same nom of protons ( atomic number ) and electrons , but they have different no. of neutrons , they aslo have different mass no ; since mass no equals to protons + neutrons .

PLEASE GIVE BRAINLIEST

For a comparison of the nucleus 5626fe, the density of the nucleus 112 48cd is mathematically given as the same.

n(Cd) / n(Fe)=1

Generally, the equation for the density  is mathematically given as

d=\frac{A}{4/3}\piR^3

Therefore

n(Cd) / n(Fe) = [A (Cd) / (A Fe) ] * [ R (Fe) / R (Cd)]^3

n(Cd) / n(Fe)= (112 / 56 ) * (1/1.26)3

n(Cd) / n(Fe)=1

In conclusion, The ratio of n(Cd) = n(Fe) is 1, hence same

Read more about density

https://brainly.com/question/14010194

Compared to the nucleus ⁵⁶₂₆Fe, the density of the nucleus ¹¹²₄₈Cd is same.

Density of any nucleus will be calculated by using the below equation as:

ρ = m/V, where

m = mass of the atom

V = volume = 4/3πR³

For the given question calculation will be proceed as:

n(Cd) / n(Fe) = [m(Cd)/m(Fe)].[R(Fe)/R(Cd)]³

From the given formulas of iron and cadmuim we put values on the above equation then we get,

n(Cd) / n(Fe) = (112 / 56 ) × (1/1.26)3

n(Cd) / n(Fe) = 1

Hence the density of nucleus ¹¹²₄₈Cd is same as of nucleus ⁵⁶₂₆Fe nucleus.

To know more about nucleus density, visit the below link:
https://brainly.com/question/5722114

#SPJ4

Answer:

It would be Container 3

Explanation:

Each of the containers has the same amount of salt.  Salinity refers to salt level.  Since the question is asking for the container with the greatest salinity, you are looking for the container with the least water (because it will be the saltiest out of all of them).  Container 3 has the least water.

Hope this helps :)

3 has less water so its saltier

It was predicted based on the Nernst equation experiment that the temperature would rise while the voltage generated by the electrolytic cell would drop.

The relationship between the ion concentrations on each side of a membrane that is completely selective for just that ion and the dc voltage (voltage) that will be recorded across that membranes under adaptation options is defined by this equation.

The reduction potential of an atom or ion, as measured at any circumstances, may be equated with the reduction potential as measured under realistic conditions of 298K but one molar or one air pressure using the Nernst equation.

To know more about Nernst visit:

https://brainly.com/question/22724431

#SPJ4

The formation of 1-bromobutane involves the following reaction mechanism: 1. Nucleophilic substitution (SN2): Butanol reacts with a bromide ion (Br-) to form 1-bromobutane and a hydroxide ion (OH-). Butanol + Br- → 1-bromobutane + OH-

The formation of 1-butene and di-n-butyl ether are side reactions in this process:
1. Elimination (E2) reaction: Butanol undergoes an elimination reaction to form 1-butene and water.
Butanol → 1-butene + H2O

2. Williamson ether synthesis: Two butanol molecules react with each other in the presence of a base, forming di-n-butyl ether and water.
2 Butanol + Base → di-n-butyl ether + H2O + Base

It's necessary to remove water before weighing the 1-bromobutane because water could alter the measured weight, leading to inaccurate results. Water can also promote side reactions like the formation of di-n-butyl ether, which could further impact the yield and purity of the desired product, 1-bromobutane.

More on Nucleophilic substitution: https://brainly.com/question/28787378

#SPJ11

Molality of a solution is defined as the number of moles of solute per kilogram of solvent. The formula for molality is given by the following equation:molality (m) = moles of solute / mass of solvent (in kg)In order to calculate the molality of a 12 percent urea solution, we need to first determine the mass of urea present in the solution.

For such more question on moles

https://brainly.com/question/29367909

#SPJ8

Answer:

2.18 × 10³L

Explanation:

2178 litres of CO2 is produced in the combustion reaction.

HOW TO CALCULATE VOLUME

Density = mass ÷ volume

no of moles. = 5.9 × 10²⁵ ÷ 6.02 × 10²³

no. of moles = 5.9/6.02 × 10²

no. of moles = 0.98 × 10²moles

= 98moles

Moles = mass ÷ molar mass

Mass of CO2 = moles × molar mass

Molar mass of CO2 = 12 + 16(2) = 44g/mol

Mass of CO2 = 98 × 44

Mass of CO2 = 4312g = 4.312kg

Volume = 4.312kg ÷ 1.98kg/m³

Volume = 2.178m³

Since 1m³ = 1000L

2.178m³ = 2.178 × 1000

= 2178 liters.

Learn more: https://brainly.com/question/15164682?referrer=searchResults

Answer:

A customer is travelling to a branch office, and the network administrator provides her with a static IP address for her laptop

Explanation:

I hope this helps!!!...

Brainliest please???

Answer:

molcule

Explanation:

The mole ratio of iron to copper is 1 : 1, thus, 1.31 g of iron is required to produce 1.5 g of copper.

The reaction between iron and copper(ii) sulfate is a redox displacement reactions in which copper is displaced from its salt by iron.

The equation of the reaction is given below:

\(CuSO_4 + Fe \rightarrow FeSO_4 + Cu\)

The mole ratio of both reactants and product is 1 : 1

molar mass of copper sulfate = 160 g

molar mass of Cu = 64

molar mass of iron = 56 g

moles of Cu in 1.5 g = 1.5/64 = 0.00234

mass of iron required = 0.00234 × 56 = 1.31 g of iron

Therefore, from the mole ratio of iron to copper, 1.31 g of iron is required to produce 1.5 g of copper.

Learn more about mole ratio at: https://brainly.com/question/19099163

Answer: Groups

Explanation:

I took the quiz

Boyle's Law

P₁V₁=P₂V₂

0.9 x 35 = 0.75 x V₂

V₂ = 42 L

Answer:

Homogeneous

Explanation:

Homogeneous mixtures are uniform in composition. They have the same proportion of components throughout. Homogeneous mixtures are called solutions.  Sugar, paint, alcohol, gold are all examples of homogeneous mixtures because they look the same throughout.

The amount of molecules= 3.01 x 10²⁴

Given

5 moles of N2

Required

The number of molecules

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

For 5 moles :

= 5 x 6.02 x 10²³

= 3.01 x 10²⁴

Answer:

red blood cells and diffusion.

Explanation:

this process involves red blood cells and diffusion. Red Blood cells (RBCs) are a type of blood cell whose role is to transport oxygen from the lungs to the peripheral tissues of the body. Oxygen diffuses from the alveoli of the lungs in to the RBC's, where it binds to hemoglobin.

Diffusion is a very important process within the human body and is essential to the transport of molecules within a number of organs including the lungs, kidneys, stomach and eyes. The lungs process millions of tiny air sacs that are called alveoli, each of which are in close contact with capillaries.

The correct answer is the amount of sodium chloride needed to make this eye solution isotonic with tears is approximately 1.85 grams. Rounding it up to the nearest whole number gives us the answer as 2. Hence, the correct option is 22.

The given solution is a hypotonic solution as the solution's tonicity is lower than that of the tears. The tears contain 0.9% w/v of NaCl, which is isotonic with tears. So, to make the given solution isotonic, the amount of sodium chloride needs to be added.

The concentration of NaCl in tears is 0.9% w/v. Additional Information: We know that % w/v is the amount of solute present in grams per 100 ml of the solution. Therefore, 0.9% w/v means 0.9 grams of NaCl is present in 100 mL of tears.

To make 30 ml of isotonic solution, we can use the following formula: Equivalent weight of NaCl = 58.5/2 = 29.25 (as NaCl ionizes to give Na+ and Cl- ions)Moles of NaCl required to make 30 ml isotonic solution = 0.9 × 30 / 1000 = 0.027Moles of Na+ and Cl- ions present in 30 mL of isotonic solution = 2 × 0.027 = 0.054

A number of grams of NaCl needed to prepare 30 mL of isotonic solution is calculated as follows:0.054 g = (0.027 x 29.25 x X) / 1000Where X is the amount of NaCl required to make 30 mL isotonic solution. Solving this equation gives us: X = 1.85 g (approx). Therefore, the amount of sodium chloride needed to make this eye solution isotonic with tears is approximately 1.85 grams. Rounding it up to the nearest whole number gives us the answer as 2. Hence, the correct option is 22.

know more about hypotonic solution

https://brainly.com/question/122954

#SPJ11

Answer:

Explanation:

In an ionic bond, atoms transfer electrons in order to achieve a stable electron configuration, also known as a full valence shell. The number of electrons transferred from one atom to another can be determined by the difference in their electron configurations.

In the example of lithium and chlorine forming an ionic bond, lithium (Li) has one valence electron and chlorine (Cl) has seven valence electrons. In order for both atoms to achieve a stable electron configuration, Li would transfer its one valence electron to Cl. This results in the formation of two ions: Li+ and Cl-.

It is important to note that for a reaction to be ionic, it must involve the transfer of electrons from one atom to another. In the case of Lithium and Chlorine it is ionic because electrons are transferred from Li to Cl.

Answer:

1300cm3.

Explanation:

Step 1:

Data obtained from the question.

Initial temperature (T1) = K

Initial volume (V1) = 650 cm3

Final temperature (T2) = double the original = 2K

Final volume (V2) =..?

Step 2:

Determination of the new volume of the gas.

The new volume of the gas can be obtained by using Charles' law as follow:

V1/T1 = V2/T2

650/K = V2/2K

Cross multiply

K x V2 = 650 x 2K

Divide both side by K

V2 = 650 x 2K /K

V2 = 650 x 2

V2 = 1300cm3.

Therefore, the new volume of the gas is 1300cm3

The new volume of the gas is 1300cm³.

Given:

Initial temperature (T₁) = K

Initial volume (V₁) = 650 cm3

Final temperature (T₂) = double the original = 2K

To find:

Final volume (V₂) =?

Determination of new volume:

V₁/T₁ = V₂/T₂

650/K = V₂/2K

K x V₂ = 650 x 2K

V₂ = 650 x 2K /K

V₂ = 650 x 2

V₂ = 1300cm³

Therefore, the new volume of the gas is 1300cm³.

Find more information about Volume here:

brainly.com/question/25736513

The balanced equation shows that two sodium atoms react with one chlorine molecule to form two molecules of sodium chloride.

The balanced reduction half-reaction for the unbalanced oxidation-reduction reaction Na(s) + Cl2(g) → NaCl(s) can be found by identifying the species being reduced. In this case, it is the chlorine molecule (Cl2) that is being reduced to form chloride ions (Cl-). The reduction half-reaction for this process can be written as follows:
Cl2(g) + 2e- → 2Cl-(aq)
This equation represents the balanced reduction half-reaction for the given oxidation-reduction reaction. To balance the full reaction, we need to combine it with the oxidation half-reaction, which represents the oxidation of sodium atoms (Na) to form sodium ions (Na+). The oxidation half-reaction can be written as:
Na(s) → Na+(aq) + e-
By combining the two half-reactions, we get the balanced oxidation-reduction reaction:
2Na(s) + Cl2(g) → 2NaCl(s)
This reaction represents the balanced reduction half-reaction and oxidation half-reaction combined. The reduction half-reaction involves the gain of electrons by chlorine atoms, while the oxidation half-reaction involves the loss of electrons by sodium atoms. The balanced equation shows that two sodium atoms react with one chlorine molecule to form two molecules of sodium chloride.

learn more about atoms

https://brainly.com/question/1566330

#SPJ11

Answer:

co2

Explanation:

it is an ionic compound

Nitrogen gas becomes converted into biologically usable chemical forms by specific bacteria called aerobic bacteria.

In atmosphere, nitrogen gas is present in gaseous form while in soil nitrogen in not present in natural form.

There are specific oxygen consuming or aerobic bacteria also called 'nitrogen fixing bacteria' which use atmospheric nitrogen and transform it into biologically usable chemical compounds such as ammonia.

Later, fixed ammonia is used by plants as rich nitrogen source.

To put it simply, nitrogen cycle is a process during which atmospheric nitrogen moves through environment to the living things in the form ammonia.

If you need to learn more about nitrogen gas click here:

https://brainly.com/question/25669014

#SPJ4

Answer:

The mitochondria

Explanation:

Its where cellular respiration occurs

Answer:

a. CH4+202→CO2+2H2O

b.Zn+2HCl→ZnCl2+H2

c.H2SO4+8HI→H2S+4I2+4H2O

d.4NaCl+2SO2+2H2O+O2→2Na2SO4+4HCl

Answer:

Endoplasmic reticulum

Explanation:

The predominant alloying element in all of the stainless steels is chromium(Cr).

Because the addition of chromium gives stainless steels their corrosion-resistant properties. Typically, stainless steels contain at least 10.5% chromium by mass, although some high-performance stainless steels may contain up to 26% chromium. The chromium reacts with oxygen in the air to form a thin, invisible layer of chromium oxide on the surface of the steel, which protects it from corrosion.

Other alloying elements, such as nickel, molybdenum, and nitrogen, may also be added to stainless steels to enhance their properties.

Learn more about stainless steels here https://brainly.com/question/28448322

#SPJ11

Answer:(:

Explanation:

An example of the solar system is the eight planets including Earth that revolve around the sun. The sun together with the eight planets and all other celestial bodies that orbit the sun. A system of planets or other bodies orbiting a star. That portion of our galaxy which is subject to the gravity of the sun

Answer:

For the wavelenth of light spectrum, I believe the order would be red visible light, infrared, microwaves and radio waves.

Answer:

....................

Explanation:

.....................

After nitrogen compression from 848 mm Hg to 976 mm Hg at a constant temperature, the new volume is approximately 38.2 L.

Hi! To find the new volume of nitrogen when 44.5 L at 848 mm Hg is compressed to 976 mm Hg at a constant temperature, you can use Boyle's Law, which states that the product of the initial pressure and volume (P1V1) is equal to the product of the final pressure and volume (P2V2).

Given:
Initial volume (V1) = 44.5 L
Initial pressure (P1) = 848 mm Hg
Final pressure (P2) = 976 mm Hg

Boyle's Law formula:
P1V1 = P2V2

Step 1: Plug the given values into the formula:
(848 mm Hg)(44.5 L) = (976 mm Hg)(V2)

Step 2: Solve for the final volume (V2):
V2 = (848 mm Hg)(44.5 L) / (976 mm Hg)
V2 ≈ 38.2 L

So, when the nitrogen is compressed from 848 mm Hg to 976 mm Hg at constant temperature, the new volume is approximately 38.2 L.

Learn more about nitrogen compression

brainly.com/question/15483405

#SPJ11

The method might solve the nuisance caused by these excess elks in the forest is research. Therefore, option C is correct.

A forest is a land area dominated by trees. Hundreds of definitions of forest are used around the world, with factors such as tree density, tree height, land use, legal standing, and ecological function all being considered.

The word forest comes from the Old French forest (also forès), which means "forest, vast expanse covered by trees"; forest was first used in English to describe wild land set aside for hunting that did not necessarily have trees on it.

A forest is a complex ecological system in which trees predominate. A forest is nature's most efficient ecosystem, with a high rate of photosynthesis that affects both plant and animal systems in a complex web of organic relationships.

Thus, option C is correct.

To learn more about the forest, follow the link;

https://brainly.com/question/22279329

#SPJ1

Your question is incomplete, probably your question was

Recently, the number of elks has increased significantly in a forest. These elks often enter the nearby grassland and eat up all the grass. This is indirectly affecting the livestock industry in that area. Which method might solve the nuisance caused by these excess elks in the forest?

A- establishing WMA

B- hunting

C- research

D-habitat manipulation

\(\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}\)

Actually Welcome to the Concept of the Magnetism.

Since any magnetic object like true magnets, permanent magnets and solenoids always have a magnetic field lines around them that , originate from North Pole and Drive to South Pole, hence,

The most intensive and strong magnetic field are close to the poles.

A. is the correct answer.

===> A. The magnitude is greatest close to the poles.

If the centers of two objects are close to each other then greater will be the magnitude of the force of gravity. Hence the gravitational force will be greater in poles than the equator. The correct option is A.

The gravitational force is regarded as the universal force which attracts all the physical forms of the earth having mass. It is considered as an attractive force exerted on all objects.

The expression for gravitational force is:

F = G m₁m₂ / r²

The gravitational force is directly proportional to the masses of the objects and inversely proportional to the distance between them.

The gravitational force is maximum at poles than the equator. It is because the poles are found to be closer to the earth than the equator due to the oblateness of earth.

The distance of the equator from the center of the earth is found to be greater than that of the poles. Hence the maximum force is at poles.

Thus the correct option is A.

To know more about force, visit;

https://brainly.com/question/13014979

#SPJ6