Question 3 of 5Why do you need to use soap when you wash oil from your hands?OA. The soap is polar and can therefore interact with both the waterand the oil.OB. The soap has a polar end that can interact with the water and anonpolar end that can interact with the oil.OC. The soap has a nonpolar end that can interact with the water anda polar end that can interact with the oil.ОD. The soap is nonpolar and can therefore interact with both thewater and the oil.

The value of molarity is 1.589mol/dm3.

While molarity is concerned with the moles of a solute in respect to the volume of a solution, molality discusses the moles of a solute in relation to the mass of a solvent.

The quantity of a material dissolved in a given mass of solvent is known as its molality (m), also known as molal concentration. The moles of a solute per kilogram of a solvent are how it is defined.

The quantity of a material in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another name for molarity.

Molarity equation : M = moles solute / liters solution

Given data

liters of solution = 230ml

mass = 11.7g

    moles of solutes = mass/molar mass

    molar mass of CH3OH= C(12)+H(1*3) +O(16)+1 =32g

      so,  moles of solutes= 11.7g/32g =0.365mol.

Molarity= 0.365mol/230*10^-3 = 0.365mol/0.230L= 1.589mol/dm3.

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Answer:

As the molecular weight increases, polymers tend to crystallize due to how harder it is for chains that are side by side to align due to the increasing length of the chain which makes it difficult to turn out the ordered atomic array.

Polymers can be natural or synthetic substances. Polymers can be crystalline or amorphous, depending on how their molecular chains are structured.

Polymers are found in proteins and nucleic acids. Crystalline polymers, have chains that are positioned together, they don't bend easily under pressure. A typical example of a crystalline polymer is a diamond-hard structure.

In summary, whenever there is an increase in molecular weight, there is always a notable decrease in crystallinity. The crystallinity of a polymer generally affects its properties which include properties such as the density of the polymer and its hardness.

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Answer:

c

Explanation:

Answer

Calcium - 40 is the most stable and most likely to be found occurring naturally

Explanation

Nuclear stability means that the nucleus of the element is stable enough to not decay with the passing of time, this decay is known as radioactivity. When it comes to Calcium, we have many isotopes of this element, but only a few have such a long half-life that we can consider them to be stable, and Calcium - 40 is the most stable and common of them.

Answer: The Molarity of chloride ion in the solution is 0.1344 m.

Explanation:

For this question we first have to find the no. of moles of the given compound.

moles of Aluminium chloride is (n)= 1.5/133.5=0.0112. (given mass/molecular mass)

no of chloride ions  present in 1 mole of this given compound = 3

moles  of chloride ions present in 0.0112 moles of compound = 0.0112x3=0.0336

molarity of CL ion is = 0.0336/(250/1000)=0.1334 m

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The equation below shows hydrogen reacting with oxygen to produce water 2H₂ + O₂ → 2H₂O If 16 mole of oxygen were reacted with excess hydrogen gas, then 32 mole of water would be produced

Mole is the amount of substance of a system which contains as many elementary entities

Here given data is

Hydrogen reacting with oxygen to produce water and the reaction is

2H₂ + O₂ → 2H₂O

16 mol of oxygen were reacted with excess hydrogen gas

Then we have to calculate moles of water would be produced = ?

Moles of oxygen = 16 moles

From the balanced equation

1 mole oxygen react to give 2 moles of water

16 moles oxygen react to give 2×16 = 32 moles

Therefore 32 moles of water would be produced in the reaction

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d. 32 mol in case you dont want to read that

The option containing Pollen, oxygen, carbon dioxide is the correct answer as it contains all the natural components, rest contains one or more synthetic or man made component.

Male gametes or the sperm cells are transported between the different plant reproductive sections by pollen which is a fascinating natural substance that is essential to plant reproduction.

The water is the primary component of all lifeforms, oxygen makes up the majority of the mass of all living things.

There are the numerous natural sources of atmospheric carbon dioxide, including outgassing from the ocean, decomposing vegetation and other biomass, venting volcanoes, naturally occurring wildfires, and even belches from ruminant animals. Photosynthesis is the process by which oxygen is continuously replenished in the Earth's atmosphere.

Pollen, oxygen and carbon dioxide all are natural component since they are form naturally in the environment.

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Your question is incomplete , for full question please refer below:

Which of the following is only list representing natural components of the atmosphere?

Here is the diagram which it shows the arrangement of metalloids in the modern periodic table.

Metalloids are the elements which shows both the characteristics of metals and non-metals.

Boron - B, Silicon - Si, Germanium - Ge, Arsenic - As, Antimony - Sb, Tellurium - Te, Polonium - Astatine are the elements belongs to metalloids

Nitrate performs an crucial function withinside the technique as nicely with the aid of using performing as a nucleophile that promotes a thermodynamic self-correcting technique.

the response of an alkyl chloride with silver nitrate (AgN03) to shape silver chloride and an alkyl nitrate, the silver atom coordinates with the chloride facilitating the formation of the carbocation. Nitrate ion is one of these susceptible nucleophile, that direct SN2 displacement can't occur.

The nitrate is a terrible nucleophile. It has three oxygen atoms pulling electron density far from the nitrogen, and there may be additionally a truthful quantity of resonance that lowers the nucleophilicity notably as well SN1 response mechanism follows a step-with the aid of using-step technique in which first, the carbocation is shaped from the elimination of the leaving group.

Then the carbocation is attacked with the aid of using the nucleophile. Finally, the deprotonation of the protonated nucleophile takes location to present the specified product.

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Melting point, density, color,  are measurable physical properties.

A physical property is a characteristic that may be observed or quantified without changing the composition. Density is another illustration of a physical characteristic. Your coin is still composed of the same material as it was before it was dropped into the fountain, despite the fact that it may be a little moist. Additional examples of physical attributes are color, mass, smell, boiling point, volume, and temperature.

Some physical qualities, such density and color, may be detected without changing the physical state of the item being studied. Only when matter undergoes a physical transition can other physical properties, like the melting point of iron or the freezing point of water, be seen.

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Answer:

6 electrons max

Explanation:

The p sub level has three orbitals so can contain six electrons The d sub levels has five orbitals so can contain 10 electrons Max.

In this question, we have a situation where an ice cube is placed in a glass of hot water, which means we have a situation of exothermic and endothermic reactions occurring.

The endothermic reaction will be related to the ice cube, since this cube will increase its temperature, and in order to do that, the cube needs to absorb energy, and this thermal energy will come from the hot water

The exothermic reaction is the hot water releasing this thermal energy to its surroundings, and then the temperature will decrease as well

The options that are the answers will be:

C

F

Letter B should be the opposite, -qwater = qice, and letter A doesn't show the positive or negative sign

Most of the weather of the world is based upon changes in the moisture, pressure or temperature of the troposphere.

The layer closest to the surface of the Earth is troposphere. This layer goes up to twenty kilometers above the Earth. The troposphere is very essential as it contains the weather of the Earth and also greenhouse gases to maintain the temperature on Earth.

Troposphere layer has the air humans breathe and the clouds in the sky. The air is densest in this lowest layer and the troposphere has three-quarters of the mass of the entire atmosphere. The air in troposphere is 78% nitrogen and 21% oxygen.

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Answer:

Explanation:

Here, we want to know what happens to a solution that becomes more acidic

A lesser ph (1-7) indicates acidity with the acidity being higher as the number becomes smaller

What this means is that a solution with a pH of 3 is more acidic than a solution with a pH of 5

Thus, when the acidity increases, it is expected that the pH of the solution decreases (it becomes smaller in number)

According to Gay Lussac's law, the pressure of a given mass of gas is directly proportional to its temperature provided that volume is constant. Mathematically;

From the given question, we are given the following parameters:

Substitute the given parameters into the formula as shown:

Therefore the pressure of the spray paint at 480 celsius is 50.71psi

Answer

5.50 L of solution

Procedure

We will use dimensional analysis to solve this question. After getting the answer, we will round to 3 significant digits. All the previous can be done in a single-step calculation.

When a candle is lit, a combustion reaction takes place that releases heat, this heat causes the temperature of the candle to increase and the state of the candle to be liquid. Molecules move due to heat.

When the candle blown out, the temperature begins to decrease and the liquid wax begins to solidify because the molecules move slower and slower. Therefore, the spaces of the obtained can be filled in the following way:

When the candle was blown out the wax solidifies because the molecules have low energy and moved slower.

Answer:

Fe

Iron – Ferrum (Fe)

Iron's Latin name, 'ferrum', gives it its symbol Fe; it simply means 'iron' or 'sword', and is possibly of Semitic origin.

Answer: a

Explanation:

Answer:

A given mass of liquid has a fixed volume at room temperature.

Explanation:

1.7 grams are there in 0.10 moles of OH ions.

The mole is a unit of measurement or the starting point for determining the concentration of a chemical in a sample. Avogadro's constant, or 1 mole, is a quantity that is equal to 6.022 × 10²³ particles. Any species, such as atoms, molecules, electrons, protons, neutrons, etc., can make up.

Number of moles = Mass/ Molecular mass

Given, number of moles = 0.10

Molecular mass of OH = 17 g/mol

∴ Mass = Number of moles × Molecular mass

  Mass = 0.10 × 17

  Mass = 1.7 grams

Therefore, 1.7 grams are there in 0.10 moles of OH ions.

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The formula NaO,CaO represents one ionic compound and one covalent compound.

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Liquids have characteristics that fall somewhere in between those of solids and gases, yet they resemble solids more. Intermolecular forces, as opposed to intramolecular forces, such as the covalent bonds that bind atoms in molecules and polyatomic ions, keep molecules in a liquid or solid together. In comparison to covalent bonds, intermolecular forces are often significantly weaker. For instance, in 1 mol of water, the intramolecular forces must be overcome in order to break both O-H bonds, while the intermolecular forces must be overcome in order to turn 1 mol of liquid water into water vapor at 100 °C, which needs just around 41 kJ. (Despite this figure appearing to be modest, the intermolecular forces in liquid water are some of the highest intermolecular forces ever measured.

The percent of chloride ion in a sample if 2. 500 g of the sample produces 1. 750 g of agcl when treated with excess ag⁺ is 17.2 percent.

What is mass percent?

The ratio of the mass of the solute contained in a solution to the mass of the solution as a whole is known as the mass percent.

Explanation:

Given:

Mass of sample = 2. 500 g

Mass of AgCl = 1. 750 g

The percent of chloride ion in a sample is calculated as,

Molar mass of AgCl = 143.32 g/mol

[tex]Molar mass of Chlorine atom = 35.45 g/mol[/tex]

Assume that all of the sample's chlorine has precipitated into silver chloride. As a result, the amount of chlorine in silver chloride will match the amount of chlorine in the sample.

First we have to find mass of chlorine,

[tex]In 143.32 g of silver chloride, mass of chlorine present is 35.45 gSo, in 1.3487 g of silver chloride, mass of chlorine present will be =35.45g/143.32 g * 1.750 g = 0.43 g[/tex]

Therefore, the percent of chloride ion in a sample is

[tex]Mass of pure chloride compound = 2.500 gMass of chlorine = 0.43 g%Chlorine = 0.43/2.5 *100%Chlorine = 17.2 %[/tex]

Hence, the percent of chloride ion in a sample is [tex]17.2%[/tex] percent.

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Explanation:

We have to balance the following equation:

__ H₂O + __ F₂ -------> __ HF + __ O₂

First we have to determine the number of atoms of each element that we have on both sides of the equation.

__ H₂O + __ F₂ -------> __ HF + __ O₂

O: 1 O: 2

H: 2 H: 1

F: 2 F: 1

We have 2 atoms of O on the right side and 1 atom of O on the left side. To balance the O atoms we can change the coefficient for H₂O and write a 2 in front of it.

2 H₂O + __ F₂ -------> __ HF + __ O₂

O: 2 O: 2

H: 4 H: 1

F: 2 F: 1

Then we have 4 atoms of H on the left and 1 atom of H on the right side of the equation. We can change the coefficient for HF to balance the H atoms.

2 H₂O + __ F₂ -------> 4 HF + __ O₂

O: 2 O: 2

H: 4 H: 4

F: 2 F: 4

And finally we have 2 atoms of F on the left and 4 atoms of F on the right. We can change the coefficient for F₂ and write a 2 there.

2 H₂O + 2 F₂ -------> 4 HF + __ O₂

O: 2 O: 2

H: 4 H: 4

F: 4 F: 4

The equation is balanced.

Answer: 2 H₂O + 2 F₂ -------> 4 HF + O₂

Answer

Explanation

The given equation for number 2 is:

Note that: When a reactant loses electrons during a reaction, it is called oxidation. When a reactant accumulates electrons during a reaction, it is called reduction.

Answer: C

Explanation: because Pangaea broke apart and made smaller continents.

Answer:

question 1:

answered previously

question 2:

a= 50% chance tall daughter

b= 50% chance short daughter

question 3:

a= 75% chance of not having cystic fibrosis

b= 25% chance of having cystic fibrosis

question 3:

Explanation:

question 2:

the question specified on the offspring being female so when stating the gametes we must include the XX chromosomes for the female and XY chromosome for the male.

let us denote that:

T = tall gene

t = short gene

Father 》 Mother

parental phenotype: Short 》 tall

parental genotype: XtYt 》 XTXt

parental gametes: (Xt) (Yt) 》 (XT) (Xt)

random fertilization:

Xt Yt

XT XTXt XTYt

Xt XtXt XtYt

F1 generation sex: Male 》Female

F1 chromosomes: XY 》 XX

F1 gen phenotype: Tall 》 Tall

F1 gen genotype: Tt, tt 》 Tt, tt

ratio: 2 : 2 or 1 : 1

percentage gender: 50% 》 50%

percentage tall: 50% 》 50%

question 3:

denoting:

N = normal (dominant)

c= cystic fibrosis (recessive)

parental phenotype: Normal 》Normal

parental genotype: Nc 》 Nc

random fertilization:

N c

N NN Nc

c Nc cc

F1 gen phenotype: Normal 》 Cystic fibrosis

F1 gen genotype: NN, Nc, Nc 》 cc

ratio: 3 : 1

percentage: 75% 》 25%

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