How does increasing the amount of IMF a molecule can have form influence its boiling point?

Concentration of A increases and Concentration of HA decreases.

The buffer solution, a water-based solvent solution, is created by combining a weak acid and its conjugate base, or a weak base and its conjugate acid. They can be diluted or have small amounts of acid or alkali added to them without the pH of the solution altering.

If small amount of OH⁻ is added to a buffer solution containing A and HA, this added OH⁻ will react

with the HA in following way,

HA + OH = A + H₂O

as a result more amount of A will generate and along with that amount of HA will decrease.

Hence we can say,

Concentration of A increases and Concentration of HA decreases . OPTION B is correct.

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You and your brother are pushing a car with a dead battery with forces of 20 N and 25 N in the same direction and the net force is 45N.

Net force = 20 N + 25 N

Net force = 45 N.

Force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. The SI unit of force is Newton(N).

The Force has different effects:

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Answer:

Water has a much higher boiling point than methane because the hydrogen bonds in water have a much stronger intermolecular force than that of methane.

The kind of bond they will form is an ionic bond where one beryllium atom will donate electrons to two chlorine atoms (option A).

Ionic bond is a type of chemical bond where two atoms or molecules are connected to each other by electrostatic attraction.

Ionic bonds are formed by atoms with opposite charges i.e. negative (-) and positive (+) charge. The metal is usually positively charged while the nonmetal is usually negatively charged.

According to this question, the molecule beryllium chloride has one beryllium atom, a metal, and two chlorine atoms, nonmetals. This means that an ionic bond will be formed by beryllium atom and chlorine atom.

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The evaporation of water from your skin is an example of an endothermic reaction because heat is lost from the body as the water evaporates from the skin.

Based on the heat changes that occur in reaction, reactions can be classified into two types;

Exothermic reactions are reactions in which the heat content of the reactants is greater than the heat content of the products. Hence, heat is given out during the reaction. An example is the dissolution of acids in water.

Endothermic reactions are reactions in which the heat content of the reactants is less than the heat content of the products. Hence, heat is absorbed during the reaction. An example is the evaporation of water from the skin.

Other types of endothermic reactions are the melting of ice and thermal decomposition.

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Only by measuring the separation between the nuclei of two contacting atoms and halving that distance can one determine the radius of an atom. The illustrations show how the environment around an atom can cause it to have a varied radius, even if it is the same atom.

By measuring the distance between the two atoms after two are united, we may determine the atomic size of the new molecule. The third technique for determining an element's atomic size is to create a single covalent link between two atoms and measure the space between them.

Atomic radii in the periodic table change from left to right across a row and from top to bottom along a column. Because of these two patterns, the periodic table's bottom left corner contains the biggest atoms, while the upper right corner has the smallest.

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First, remember that:

The vapor pressure of a liquid is directly related to the intermolecular forces present between its molecules. If these forces are stronger, the evaporation rate and the vapor pressure will be lower.

So, we're going to analyze the intermolecular forces of each element:

O2: The molecule of oxygen consist of two oxygen atoms bonded together by a double bond. It consist of just London dispersion forces, so this is a really weak force.

H2O: Water has hydrogen bonds, dipole-induced dipole forces, and London dispersion forces. So it has strong forces.

SO: It consists of London dispersion forces, and there's a difference of electronegativity between S and O, so there's a greater force than the force of O2.

Therefore, O2 could have the highest vapor pressure, as its intermolecular forces are the weakest.

The hydrologic cycle is the movement of water.

Water can recycle itself in the water cycle which is called the hydrologic cycle.

This cycle can be considered to start from the evaporation of water from the ocean's surface, making the air moist. As this moist air is lifted it cools and the water vapor condenses. It then forms clouds; in fact, clouds are made from tiny water droplets and ice crystals that are so small that they can float in the air.

The moisture in the atmosphere can also be transported around the globe until it returns to the surface as precipitation. Precipitation may take the form of rain, snow, sleet, or hail. Once the water reaches the ground, water may evaporate back into the atmosphere, or the water may penetrate the surface and become groundwater.

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Answer:  The correct answer is 72.0726, so you have chosen correctly!

Explanation:

The carbon weight of C14 is 168g

The total mass (molar weight) of C14H19NO2 is 233g

Therefore, the percent carbon would be 168/233 = 0.721 or 72.1%

The self-auto ionization affects the pH at the titration and is greater than 7

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Answer:

False

Explanation:

It is False because in a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Answer:

Explanation:

Fossil fuels got their name because they are made from dead organisms, mostly plants that didn't decay because they were squashed under water or mud with no oxygen.

The value of the Q-system is Zero.

The Q-System is a rock mass classification system related to the stability of underground openings. Q-System was originally developed at NGI and is widely used in Norway and internationally. service. The Q value of undisturbed mountains can fluctuate. The Q-System is a rock mass classification system related to the stability of underground openings.

Based on the estimation of six rock parameters the Q value of rocks can be calculated. This value represents the quality of the rock. Rock quality designation RQD is a rough measure of the degree of fracturing or fracturing of rock masses measured as the percentage of drill cores that are 10 cm or longer in length. High-quality rocks have an RQD greater than 75% and low-quality rocks less than 50%. There are several definitions of lithology designation RQD.

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Taking into account the definition of density, the density of the jam in the jar is 1.4 g/cm³.

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density= mass÷ volume

In this case, you know that:

Replacing in the definition of density:

density= 91 g÷ 65 cm³

Solving:

density= 1.4 g/cm³

In summary, the density is 1.4 g/cm³.

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A scientist proposes that an iron bar be divided into smaller and smaller pieces it is right to infer that during this process, the process produces, the smallest piece of the iron (Option A)

Iron has the chemical symbol Fe and the atomic number 26. It is a metal from the periodic table's first transition series and group 8. It is the most common element on Earth by mass, just ahead of oxygen, and makes up much of the Earth's outer and inner core.

Alloy steels, such as carbon steels, are made using iron plus additions such as nickel, chromium, vanadium, tungsten, and manganese. Bridges, power pylons, bicycle gears, cutting tools, and rifle barrels are all made from them. Carbon content in cast iron ranges from 3-5%. It is utilized in the manufacture of pipes, valves, and pumps.

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7300 mg

7.3x10^-3 kilograms = 7300 milligrams

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Answer: The nebular theory is an explanation for the formation of solar systems.

Explanation:

The first shell of an atom is its electron shell, or energy level.

The subshell is the second shell.

The particular orbital (or "cloud") within that subshell is the third shell.

The position and energy of an electron in an atom are represented by a set of numbers known as quantum numbers.

principal quantum number

azimuthal quantum number

magnetic quantum number

The electron shell, also known as the atom's energy level, is the initial shell. The value of N ranges from 1 to the atom's outermost electron's shell.

By using the connection, the second shell, which is the subshell, determines the magnitude of the orbital angular momentum.

The third shell creates the orbital angular projection momentum along a certain axis and is the particular orbital (or "cloud") within that subshell.

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The percentage composition of Pb and Cl₂ is 74.5% and 25.5% respectively in PbCl₂.

A simple concept is percent composition. The mass percentage of each element in a compound is indicated by its percent composition. The fusion of two or more elements results in a chemical compound.

If you are researching a chemical compound, you might be interested in learning what percentage of that compound contains a particular element. (Mass of Element/Molecular Mass) x 100 is the formula for percent composition.

The mass of Pb is 207.2

The mass of Cl2 is 70.906, since the mass is 35.453 and we have two of them.

When we add it together, the total mass of PbCl2 is 278.106, all we need to do is add the two masses we calculated before, together!

The formula for percent composition is:

[tex]\frac{element\\mass}{compound\\mass} \times 100[/tex]

Lets calculate the percentage of Pb

(207.2/278.106) × 100

= 74.5%

The percentage compositions of Pb is 74.5%

Lets calculate the percentage of Cl₂

(70.906/278.106) × 100

= 25.5%

Thus, the percentage composition of Pb and Cl₂ is 74.5% and 25.5% respectively in PbCl₂

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The concentration of the solution will be 0.2 M.

Given information,

Initial Volume [V1] = 25 ml

Initial Volume in litre = 25/1000 L

                                   = 0.025 L

Initial Concentration [M1] = 6 M

Final Volume [V2] = 750 ml

Final Volume in litre = 750/1000 L

                                   = 0.75 L

Let final Concentration = [M2]

Using the dilution equation, that is

Initial Molarity x Initial Volume = Final Molarity x Final Volume

M1 x V1 = M2 x V2

6 x 0.025 = M2 x 0.75

0.15 = 0.75M2

∴ M2 = 0.2 M

Therefore the concentration of the solution after the dilution process is 0.2M compared to the initial 6M HCl.

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Protons (the number on the right of calcium-40 represents number of protons). The tiniest component of ordinary matter, an atom, makes up a chemical element.

Neutral or ionized atoms make up every solid, liquid, gas, and plasma. Atoms typically have a diameter of 100 picometers or less. Due to quantum effects, they are so small atoms that it is impossible to precisely anticipate their behavioral using traditional physics, as if they were tennis balls, for example.

The positively charged particles called protons are found in the hydrogen atom's nucleus. Protons, electrons, and neutrons are the building blocks of an atom. An atom's nucleus, which is located in the middle, contains all of its mass.

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The 0.59  moles of NaCl are present in 35grams of NaCl.

What do you understand by moles?

Chemists employ the mole, as a very significant unit of measurement.

Given:

The given mass of NaCl = 35 gram

The molar mass of NaCl = 58.44 g/mol

By applying the mole's formula = moles = Given mass/molar mass

Moles = 35/58.44 = 0.59 moles

Hence, the answer is 0.59 moles of NaCl

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wThe question requires us to define the ways the volume of a baloon can be increased, considering number of molecules of air, temperature and pressure.

To answer this question, we must analyze the ideal gas law, which can be written as:

where P is the pressure of the system, V is its volume, n is the number of moles, R is a constant (constant of gases) and T refers to the temperature of the system.

We can rearrange this equation to analyze the effect of P, n and T over V:

Looking at the equation, we can note that temperature (T) and number of moles (n) are directly proportional to volume (V), while pressure (P) is inversely proportional.

This means that increasing / decreasing the number of moles or the temperature of the system will increase / decrease the volume, while increasing the pressure will decrease the volume (and decreasing the pressure will increase volume):

Considering the information above, we can answer the question as it follows:

• increasing the number of air molecules in the balloon

• increasing the temperature of the balloon

• decreasing the pressure on the balloon

According to the given statement HSO₄ is the empirical formula of a compound.

Empirical formulae are beneficial since figuring out the molecular formula can be immensely aided by knowing the relative amounts of each constituent in a molecule. Obtaining an n-value is crucial in order to establish the actual number of atoms in a molecule.

Hydrogen = 2 g

Sulphur (S) = 32 g

Oxygen (O) = 64 g

We know, molecular weight of the elements:

H = 2 g/mol

S = 32 g/mol

O = 16 g/mol

This allows us to calculate how many moles there are for each element.

⇒ Moles

= Weight (g) / Molecular weight (g/mol)

For Hydrogen:

⇒ Moles of H = 2/2

⇒ Moles of H = 1 mol

For Sulphur:

⇒ Moles of S = 32/32

⇒ Moles of S =1 mol

For Oxygen:

⇒ Moles of O = 64/16

⇒ Moles of O = 4 mol

To determine the empirical formula, we shall divide the element with the fewest moles by the other elements' moles.

Here, the smallest moles are of Hydrogen and Sulfur i.e. 1 mol

⇒ H = 1/1

⇒ H = 1

⇒ S = 1/1

⇒ S = 1

⇒ O = 4/1

⇒ O = 4

⇒ Empirical formula = HSO₄

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Answer: The correct answer is H2SO4. the other guy is wrong.

Explanation: First, you must convert grams to moles using the molar mass of each element.

2 g H×1 mole H1.008 g H=2 moles H32 g S×1 mole S32.006 g S=1 mole S64 g O×1 mole S15.99 g O=4 mole O

Second, you divide your calculated moles by the smallest mole to get whole-number ratios. Since Sulfur (S) has the smallest amount of moles (1) we will divide by that number.

H=21=2S=11=1O=41=4

So your final answer is H2SO4.

All the pair of words given have the same relation as chemist has with matter.

Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.

Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.

The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.

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Answer: Astronomer: Space

Explanation:

K12 2.18 Unit Test

The example 'recycle and reuse materials' is a way to live sustainability because it involves the use of old materials instead of obtaining new ones (Option 3).

The expression recycling is used to denote the reuse of material with different purposes, which involve the absence of extraction techniques that may be harmful to the environment and therefore promote sustainability.

Therefore, with this data, we can see that recycling is an excellent manner to maintain the sustainability objective in order to reduce the need to obtain more and more material from nature.

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Answer:

5 is the uncertain number