Place the following compounds in order of increasing strength of intermolecular forces
CO2 F2 NH2CH3
F2

A matter can change from one state to another by absorbing or losing energy. Some of the example of such changes are melting, boiling, freezing, etc. Here 'Ga' changes into liquid state at high temperature.

The three states of matter represents the three distinct physical forms in which matter can take in most environments. The common states of matter are solid, liquid and gas. A change of state is a physical change in the matter.

When the temperature or pressure of a system changes, then there occurs a change of state. The intermolecular interaction between the molecules increases with the increase in temperature and pressure. Similarly when the temperature decreases, molecules form a rigid structure.

Thus a change of state occurs on changing some parameters.

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Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 50 \times {1}^{2} \\ = 25 \times 1 = 25\)

We have the final answer as

Hope this helps you

The formula for the new ion is HPO₄²⁻. The name of the new ion is Hydrogen phosphate.

Hydrogen phosphate is found in a variety of natural systems. It is conjugated to phosphate (PO₄)³⁻ and dihydrogen (D₂PO₄)⁻phosphate. Hydrogen phosphate and its salts are commonly used in fertilizer applications and in cooking.

The majority of hydrogen phosphate salts are colorless, water-soluble, and non-toxic. Hydrogen phosphate is formed by the hydrolysis of water (H₂O) with an anion (P₂O₇)⁴⁻.

In the opposite reaction, a proton is added to the hydrogen phosphate to make it a base, and it is then reformulated with dihydrogen phosphate.

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37 percent is the increase in percentage.

The air bubbles locked in ice sheets as well as glaciers over Earth's previous three glacial cycles are used in the second graph to depict carbon dioxide (CO2) levels during those periods. Human activities had boosted atmospheric CO2 approximately 50% since the start of the industrial era (in the 18th and 19th centuries), bringing it to 150% of it's own value in 1750.

Actually 282 ppm means 282 gm of CO2 is in 1 million gm of air similarly 382 ppm means 387 gm is in 1 million gm of air . Increase in mass of CO2 387-282 = 105 gm .

So percentage increase= (105× 100)÷282= 37%

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10g-4.58=4.42g volume of hydrogen gas

Answer:

exothermic - bending a plastic ruler , cutting paper, melting ice cream, ripening of fruit, souring of milk.

Explanation:

endothermic- baking of cake .

Answer:

China, Mongolia, Russia, and North Korea. They were told to fly at 1400 meters but they flew at 1500 feet making them crash.

Explanation:

The two ways in which the physical state of matter can be changed are melting and freezing.

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The isotopes containing 12 neutrons in their nucleus are Na-23 and Mg-25.

To determine which isotopes have 12 neutrons, we'll use the formula: Number of neutrons = Mass number - Atomic number. For each isotope given (Na-23, Ne-22, C-12, and Mg-25), we'll calculate the number of neutrons:

1. Na-23: Sodium has an atomic number of 11. Neutrons = 23 - 11 = 12.
2. Ne-22: Neon has an atomic number of 10. Neutrons = 22 - 10 = 12.
3. C-12: Carbon has an atomic number of 6. Neutrons = 12 - 6 = 6.
4. Mg-25: Magnesium has an atomic number of 12. Neutrons = 25 - 12 = 13.

Based on these calculations, the isotopes with 12 neutrons are Na-23 and Ne-22.

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Answer:

D.

Double replacement, CaO + Cl2O

Explanation:

The chemical equation is CaO + Cl₂\(\rightarrow\) CaCl₂ + O₂ and is a displacement reaction.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .There are different types of chemical reactions where displacement reaction is one of it's types.

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The diagram that showing a balanced force represents the stopped elevator on a floor. Thus, diagram A represents the stopped elevator.

Force is an external agent actin on an object to change its motion or to deform it. There are various kinds of forces such as frictional force, gravitational force, magnetic force etc.

If two or more same or different forces acting on an object from the same side they will add up in magnitude. If two forces with same magnitude are acting from opposite direction of the object, then they will cancel each other and the net force will become zero. This situation is called the balanced force.

If two unequal force acts from opposite direction, the net force is the substracted value of their magnitudes and the situation is called unbalanced force.

A balanced force does not make a displacement of the body. In situation A, normal force of 3N get cancelled by 3 N by gravity. Similarly 5N to the right gets cancelled by 5N to the left. Therefore, the elevator is not moving and it is stopped on floor.

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Answer:

The percent error is 23%

Explanation:

To find the percent error for the experiment carried out,

Percent error is given by the formula below

\(PE = \frac{AE}{TV}\) ×\(100\)%

Where PE is the percent error

AE is the Absolute error

TV is the Theoretical value

Also, Absolute error (AE) can be determined from

Absolute error (AE)  = /Theoretical value(TV) - Experimental value (EV)/

Now, from the question,

Experimental value (EV) = 1.23 g/mL

Theoretical value (TV) = 1.00 g/mL

From,

Absolute error (AE)  = /Theoretical value(TV) - Experimental value (EV)/

Absolute error (AE) = /1.00 g/mL - 1.23 g/mL/

Absolute error (AE) = / - 0.23 g/mL/

Absolute error (AE) = 0.23 g/mL

This is the Absolute error

Now, for the Percent error

\(PE = \frac{AE}{TV}\) ×\(100\)%

\(PE = \frac{0.23}{1.00}\) ×\(100\)%

\(PE = 23\) %

Hence, the percent error (PE) is 23%

This exercise is from Barbershop can keep men healthy by Joseph Ravenell, and is related to High Blood Pressure.

Mr. Ravenell describes the essence of the black barbershop as a place where there is friendship, trust and cooperation, and peace. (1a)

He considers it a safe haven because is void of stress and societal threats. (1b)

Some of the health-related topics that were discussed in the barbershop include but are not limited to:

Denny states that black men trust their barbers more than their doctors because most of them relate more with their barbers than with their doctors.

Mr. Ravenell taught barbers how to measure blood pressure, and how to counsel their customers to go see a doctor if their blood pressure was too high.

It was discovered that the number of those whose blood pressure were controlled in the 18 shops that were studied for one year were higher in the shops where the barbers had been trained.

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Answer:

no ,its not necessary tht two objects have same volume have the same mass because the density of the material they are made up of can be different. mass and volume areindependent, two objects with thesame volume can have differentmasses. Therefore, the objects can have different densities.

Answer:

•4x^2 = 16

•2(x - 2)^2 = 0

Explanation:

To solve this problem, we can simply substitute x = -2 and x = 2 into each of the given equations, and see which ones are true.

Let's start with x = -2:

x^2 - 4 = 0: (-2)^2 - 4 = 0, so this equation is not true for x = -2.

x^2 = -4: (-2)^2 = 4, which is not equal to -4, so this equation is not true for x = -2.

3x^2 + 12 = 0: 3(-2)^2 + 12 = 12, which is not equal to 0, so this equation is not true for x = -2.

4x^2 = 16: 4(-2)^2 = 16, so this equation is true for x = -2.

2(x - 2)^2 = 0: 2(-2 - 2)^2 = 0, so this equation is true for x = -2.

Now let's try x = 2:

x^2 - 4 = 0: 2^2 - 4 = 0, so this equation is not true for x = 2.

x^2 = -4: 2^2 = 4, which is not equal to -4, so this equation is not true for x = 2.

3x^2 + 12 = 0: 3(2)^2 + 12 = 36, which is not equal to 0, so this equation is not true for x = 2.

4x^2 = 16: 4(2)^2 = 16, so this equation is true for x = 2.

2(x - 2)^2 = 0: 2(2 - 2)^2 = 0, so this equation is true for x = 2.

Therefore, the two equations that are true for both x = -2 and x = 2 are:

4x^2 = 16

2(x - 2)^2 = 0

In summary, by substituting x = -2 and x = 2 into each equation and checking for equality, we found the two equations that are true for both values of x.

Sugar is a simple carbohydrate consisting of carbon, oxygen, and hydrogen molecules which are linked by covalent bonds.

The chemical covalent bonds are a type of chemical bond in which atoms that differ in their electronegativity share electrons to maintain cohesion i.e., intramolecular cohesion, while sugar molecules may interact by glycosidic bonds.

Therefore, with this data, we can see covalent bonds bind atoms in the sugar molecule while glycosidic bonds are those required to connect different sugar and thus form a complex macromolecule or polysaccharide.

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Answer:

the neutral formula for magnesium chlorite is Mgcl2

\(\rm Mg(ClO_2)_2\) is the neutral formula for magnesium chlorite. The chlorite ion, also referred to as the \(\rm ClO_2^-\) ion.

The \(\rm ClO_2^-\) ion, also known as the chlorite ion, is what is commonly meant when the word "chlorite" is used. The positive and negative charges in a compound must be equal in order for it to be neutral. Since the magnesium ion (\(\rm Mg^{2+}\)) is a cation and has a +2 charge, it must shed two electrons in order to become stable. Because oxygen (O) generally has a -2 charge and in this instance there are two oxygens, the total charge is -2, the chlorite ion (\(\rm ClO_2^-\)) has a -1 charge. It has a -1 charge since the molecule only contains one chlorite ion.

Balance the charges in order to make the compound electrically neutral. We require two chlorite ions to balance the charge because the chlorite ion has a -1 charge and the magnesium ion has a +2 charge. As a result, \(\rm Mg(ClO_2)_2\) is the proper formula for magnesium chlorite.

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The mass of nitrogen dissolved in the 92.0 L home aquarium at room temperature is 778.48 grams.

The mass of gases refers to the amount of matter or substance present in a gaseous state. It represents the total mass of all the gas particles within a given volume.

In the study of gases, the mass of gases is often expressed in terms of molar mass, which is the mass of one mole of the gas. Molar mass is typically measured in grams per mole (g/mol).

The mass of gases can be calculated using the ideal gas law, which relates the pressure, volume, temperature, and number of moles of a gas. The ideal gas law equation is PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

n = X × P × V / (R × T)

Given :

P = 1.0 atm

V = 92.0 L

X = 0.78 (mole fraction of nitrogen)

T = 25 + 273.15 = 298.15 K.

n = 0.78 × 1.0 atm × 92.0 L / (0.0821 L.atm/mol.K × 298.15 K)

n = 27.86 moles

Mass of nitrogen = n × molar mass

Mass of nitrogen = 27.86 moles × 28.0 g/mol

Mass of nitrogen = 778.48 g

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Answer:

Had 3.612 x 10²⁴ ions (Not too sure of the answer )

Explanation:

But anyway heres My approach.

mole of sodium is 6 .

If 1 mole gives 6.02x10²³ ions

then 6moles will be = x ions

x ions = 6 x 6.02x10²³ / 1 mole

x = 3.612x10²⁴ ions

16.7 mL option b is the correct answer,  the volume of 6.00 M nitric acid that contains 6.302 g of HNO, solute (63.02 g/mol) is 16.7 mL.

The amount of stuff that has exactly as many elementary particles as there are atoms in 12 grams of carbon-12 is known as a mole. The mole, often known as mol, is a SI unit that counts the particles in a given material. 6.022141791023 atoms, or other fundamental building blocks like molecules, make up one mole.

Given, molarity/concentration = 6M

weight = 6.302g

solute = 63.02 g/mol

moles of HNO3 in 6.302g

moles = mass/molar mass = 6.302/63.02

= 0.1 mol

Now, Molarity = mole/volume

Volume = mole/molarity

Volume = 0.1/6 = 0.0167L

Volume = 16.7 ml

Therefore,  the volume of nitric acid is 16.7 ml.

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Hydrophilic molecules that are to be released by cells are stored in membrane-bound structures called Secretory vesicles.

The secretory vesicle is a vesicle that mediates the vesicular delivery of cargo - e.g. hormones or neurotransmitters - from an organelle to particular web websites on the molecular membrane, in which it docks and fuses to launch its content.

Secretory vesicles shape from the trans-Golgi network, and they launch their contents to the molecular outside with the aid of using exocytosis in reaction to extracellular signals. The secreted product may be both a small molecule (together with histamine) or a protein (together with a hormone or digestive enzyme).

Vesicles are small systems inside a molecule, together with fluid enclosed with the aid of using a lipid bilayer worried in delivery, buoyancy control, and enzyme storage.

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The size and charge of the cation and the charge density of the clay surface influence the preference of cations at charged clay surfaces.

The size of the cation is important because larger cations are less likely to fit into the negatively charged clay lattice, so smaller cations are preferred. The charge of the cation also plays a role because cations with higher charge are more strongly attracted to the negatively charged clay surface.

The charge density of the clay surface is also important because the higher the charge density, the stronger the attraction to cations. This is because there are more negative charges per unit area, making it more likely for cations to interact with the surface. Overall, the preference of cations at charged clay surfaces is determined by a complex interplay of these factors.

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Answer:

the way plants eat

Explanation:

Answer:

The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

1) balanced chemical equation

\(2\ C_{4}H_{10}_{(g)}\ +\ 13\ O_{2}_{(g)}\ ->\ 10\ H_{2}O_{(g)}\ +\ 8\ CO_{2}_{(g)}\)

2) convert mass of CO₂ to moles

\(=71.9g\ CO_{2}\ x\ \frac{1\ mol\ CO_{2}}{44.01g\ CO_{2}} \\\\=1.633719609\)

3) multiply by molar ratio

\(=1.633719609\ mol\ CO_{2}\ x\ \frac{2\ mol\ C_{4}H_{10}}{8\ mol\ CO_{2}}\\\\=0.4084299023\)

4) convert moles of C₄H₁₀ to mass

\(=0.4084299023\ mol\ C_{4}H_{10}\ x\ \frac{58.14g\ C_{4}H_{10}}{1\ mol\ C_{4}H_{10}}\\\\=23.74611452\)

= 23.7 grams of C₄H₁₀ is needed to produce 71.9 grams of CO₂

Answer:

B is the Bohr model of atom

The number of molecules of CO2 contained in a 5.00 L tank at 7.53 atm and 485 K can be calculated using the ideal gas law and Avogadro's number. The correct answer is option e, which is 2.45 x 10^24 molecules.

To determine the number of CO2 molecules in the tank, we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure in atmospheres (7.53 atm)

V = Volume in liters (5.00 L)

n = Number of moles of gas (to be determined)

R = Ideal gas constant (0.0821 L·atm/(mol·K))

T = Temperature in Kelvin (485 K)

Rearranging the equation to solve for n:

n = PV / RT

Substituting the given values:

n = (7.53 atm) * (5.00 L) / (0.0821 L·atm/(mol·K) * 485 K)

n = 0.1848 mol

Now, to convert moles to molecules, we can use Avogadro's number, which states that 1 mole of a substance contains 6.022 x 10^23 molecules.

Number of molecules = (0.1848 mol) * (6.022 x 10^23 molecules/mol)

Number of molecules = 1.112 x 10^23 molecules

Therefore, the correct answer is option e, which is 2.45 x 10^24 molecules.

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Answer:

In this reaction, potassium atoms lose electrons to form positively-charged potassium ions (oxidation) and iodine atoms gain electrons to form negatively-charged iodide ions (reduction).

Explanation:

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In this process, iodine atoms get electrons to produce negatively charged iodide ions, whereas potassium atoms lose electrons to form positively charged potassium ions. Oxidation and reduction takes place.

Redox reactions include a change in the oxidation state of the substrate. Similar to how reduction is the acquisition of electrons while oxidation is the loss of electrons or an increase in the oxidation state.

An oxidation process takes place when oxygen interacts with a substance or an element. Another way to think of oxidation is as the process of removing hydrogen from the species of reactants. Molecule, atom, or ion oxidation is the process of losing electrons.

Because they generate new functional groups in molecules or alter existing functional groups, oxidation processes are crucial in the synthesis of organic substances.

Thus, the iodine atom also experiences a change. The iodide atom gets one electron during the reaction with potassium, leaving it with eight electrons at its outer energy level.

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Answer:

Explanation:

sunlight

soil

water

sugar

carbon dioxide

minerals

leaves

vitamins