__________ What is the value of the activation energy for the forward reaction? Be sure to include the
appropriate sign.

The polarity of a compound or a substance is defined as the separation of charges or the two ends of the molecule have a positive or negative end. Gasoline and oil are non-polar compounds, which dissolve in each other.

Based on the law of solubility, it can be explained as:

Thus, the polarity of the compound and its solubility is dependent on the dipole moment or electronegativity.

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Mendeleev's and the modern periodic table are both organized by increasing atomic number, grouped into periods and groups showing reactivity and physical properties. Both tables also divide into metals, nonmetals and accommodation for chemical families.

Both Mendeleev's periodic table and the modern periodic table are organized based on increasing atomic number and have a structure that groups elements into periods (horizontal rows) and groups (vertical columns). This arrangement shows patterns of chemical reactivity and physical properties. Furthermore, both tables accommodate the division into metal and nonmetals, and have provisions for chemical families, such as the alkali metals, alkaline earth metals, halogens, and noble gases.

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Known :

r = 6 in

h = 11 in

Asked :

Volume = ...?

Answer :

V = πr²h

= 3.14 × 6² × 11

= 3.14 × 36 × 11

= 3.14 × 396

= 1,243.44 in³

So, the volume is 1,243.44 in³ (2nd choice)

Hope it helpful and useful :)

Answer:

C

Explanation:

Reduction can be seen through addition (gaining) of electrons, addition of Hydrogen or removal of Oxygen

Mn7+ is reduced to Mn4+ by the addition of 3 electrons.

Answer:

= 3.01× [tex]10^{23}[/tex] molecules.

Explanation:

1 mole of [tex]H_{2}SO_{4}[/tex] - 98g

? moles of [tex]H_{2}SO_{4}[/tex] - 49g

= 49 ÷ 98 = 0.5 moles of O2 in 49g.

But 1 mole of any substance = 6.023 × [tex]10^{23}[/tex] molecules

∴ 0.5 moles = 0.5 × 6.023 × [tex]10^{23}[/tex] molecules

= 3.01× [tex]10^{23}[/tex] molecules.

Answer:

Image result for What is the major cause of erosion and weathering that affects coastline features?

Coastal erosion, which is the wearing away of coastal land or beaches, is mainly caused by the impact of waves along the shoreline. This is accentuated during storms when waves are large and crash on shore with a lot of energy. ... As the sand and rocks crash into the coast, they grind away land and rock.

Explanation:

Final answer:

The major cause of erosion and weathering affecting coastline features is the action of ocean waves which crash against coastal landscapes, leading to wear and the transport of rock fragments. Water is a key weathering agent and topographical features as well as climate influence the rate of erosion.

Explanation:

The major cause of erosion and weathering that affects coastline features is the action of ocean waves. These waves, through their persistent energy, crash against beaches and coastal cliffs, leading to erosion and the eventual collapse of land masses. Water is a significant weathering agent in the lithosphere, where it contributes to the breakdown of rock into fragments, which can be transported and redeposited elsewhere, shaping various earth surfaces, including river valleys and rocky beach coastlines. Erosion and weathering are influenced by a number of factors including climate, topography, and the presence of water, which promotes biological activity and affects soil characteristics.

Erosion by rivers, glaciers, or ocean waves can create over-steepened slopes that are prone to collapse under certain conditions, such as heavy rains, earthquakes, or the weight of accumulated materials. The role of water in weathering processes is also important for the ecosystem, as it increases the content of dissolved minerals crucial for plants and animals living in water bodies.

It is the same as a proton. That is why, if hydrogen was a molecule not an ion, one electron is needed to 'cancel' out the proton.

A hydrogen ion, H+, is essentially a proton and in an aqueous solution, it is better represented as a hydronium ion, H3O+, showing its association with water molecules.

A hydrogen ion, H+, is often referred to as a proton because it is a hydrogen atom that has lost its lone electron. However, we do not find bare protons in an aqueous solution since they are typically attracted to water molecules, forming hydronium ions (H3O+). The representation of H3O+ is more accurate for how a hydrogen ion exists in water. While in many chemical reactions, H+ and H3O+ are treated equivalently, the latter shows our understanding that protons are associated with water molecules, and not free-floating.

Making the reactants particles larger would not speed up a chemical reaction.

The speed at which a chemical reaction occurs is called the rate of reaction.

The factors that can increase the rate of a chemical reaction are as follows:

Therefore, making the reactants particles larger would not speed up a chemical reaction.

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Answer: 3, 1, 2, 4

Explanation:

The correct order of steps to determine the mass of product created, given a certain mass of reactant are 3, 1, 2, 4.

The quantity of matter that makes up every item or body is the greatest way to understand mass. Everything that we can see has mass. Examples of objects with mass include a table, a seat, your bed, a ball, a glass, or even air. The mass of a thing determines whether it is light or heavy.

The correct order of steps to determine the mass of product created, given a certain mass of reactant are

Balance the equation

Convert given mass to moles

Determine mole ratio between given mass and substance being solved for

Convert moles of substance being solved for to mass

Therefore, the correct order of steps to determine the mass of product created, given a certain mass of reactant are 3, 1, 2, 4.

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Answer:

Heat, Q = 45 J

Explanation:

We have,

Mass of aluminium is 5 g

The temperature is raised from 22°C to 32°C.

The specific heat of aluminium is 0.90 J/g°C.

It is required to find the heat are needed to raise the temperature.

The heat required to raise the temperature is given by :

[tex]Q=mc\Delta T\\\\Q=5\times 0.9\times (32-22)\\\\Q=45\ J[/tex]

So, 45 J of heat are needed to the temperature of 5.0 g of aluminum from 22°C to 32°C.

Answer:

= 1.7 M

Explanation:

Molecular mass of NaCl = ( 23+35.5 ) = 58.5g

58.5g of NaCl are weighed by 1 mole of NaCl

10.0g of NaCl will be weighed by ( 10÷58.5 )

= 0.17 moles of NaCl

100mL = ( 100÷1000)L = 0.1L

0.1L of a solution is occupied by 0.17 moles of NaCl

1L of solution will be occupied by [(1÷0.1)×0.17]

=1.7 M

Final answer:

The molarity of a solution made by dissolving 10.0 g of NaCl to make a 100 mL solution is 1.71 M.

Explanation:

The student is asking to determine the molarity of a sodium chloride (NaCl) solution made by dissolving 10.0 g of NaCl in enough water to make a 100 mL solution. To find the molarity, we first convert the mass of NaCl to moles by using its molar mass, which is 58.44 g/mol. After that, we divide the number of moles by the volume of the solution in liters.

Calculations:

Moles of NaCl: 10.0 g ÷ 58.44 g/mol = 0.171 mol

Volume of solution: 100 mL = 0.100 L

Molarity of NaCl solution: 0.171 mol ÷ 0.100 L = 1.71 M

Answer:

Explanation:because The Sun is closer to Venus than it is to Mars. The distance between the Sun and Mars is approximately little more than twice the distance between the Sun and Venus. Mars has to cover a longer distance in its orbit than Venus. Hence, Mars takes about 462.3 Earth days more than Venus to revolve around the Sun.

Mars takes longer to revolve around the Sun than Venus because it is farther from the Sun, as described by Kepler's third law of planetary motion, which relates orbital period to distance from the Sun.So,option C is correct.

The reason why Mars takes 462.3 Earth days more than Venus to revolve around the Sun is because the Sun is closer to Venus than it is to Mars. This is directly related to Kepler's third law of planetary motion, which states that the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit. In simpler terms, this means that planets farther from the Sun take longer to complete an orbit.

Venus is much closer to the Sun, with an orbital period of approximately 225 Earth days. On the other hand, Mars is farther away from the Sun, resulting in a significantly longer orbital period of about 687 Earth days. The difference in orbital periods is a consequence of their respective distances from the Sun rather than their physical characteristics, such as temperature, mass, or diameter.

Answer:

A hurricane wiping out a new species of flower in the tropical rain forests of Brazil.

Explanation:

Answer:

0.025 g C6H12O6

Explanation:

ppm = (g solute/ g solution)* 10^6

g solute= (ppm * g solution)/ 10^6

g solute = (250 ppm * 100 g)/10^6

g solute=0.025 g C6H12O6

Mass of C₆H₁₂O₆ needed to be dissolved in water to make 100g of a 250ppm solution is 0.025g.

Parts per million or ppm mean out of a million. Usually describes the concentration of solute in the solvent. One ppm is equivalent to 1 milligram of something per liter of water (mg/l).

This could be used to describe contents in water, a supplier's defective rate, etc.

It is technically a dimensionless measure illustrated as a percentage, and is better suited to describing smaller concentrations of substances in gases, liquids, or solids.

Given,

Mass of solution = 250ppm = 250 × 10⁶ g

a 250 ppm solution would be 250 g of solute per 1,000,000 g solution. To make 100 g of this solution would require:

(250 × 100) ÷ 10⁶ = 0.025g

Therefore, Mass of C₆H₁₂O₆ needed to be dissolved in water to make 100g of a 250ppm solution is 0.025g.

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Answer:

Animal tissues are grouped into four basic types: connective, muscle, nervous, and epithelial. Collections of tissues joined in units to serve a common function compose organs.

Explanation:

Final answer:

In multicellular animals, tissues such as epithelial, connective, muscle, and nervous form organs with specific functions, which then contribute to various organ systems maintaining life processes within the organism.

Explanation:

In the biological organization of multicellular animals, the combinations of various tissues make up functional units known as organs. These tissues include groups of similar cells that perform related functions. There are four main types of animal tissues: epithelial, connective, muscle, and nervous tissues. Epithelial tissue covers the body surfaces and lines body cavities, connective tissue supports and binds other tissues, muscle tissue is responsible for movement, and nervous tissue is involved in receiving and transmitting nerve impulses.

Each of these tissues contributes to the formation of organs, which are essential structures with specialized functions necessary for the survival of the organism. These organs are then organized into systems such as the digestive, circulatory, and nervous systems, all cooperating to maintain the life processes within the animal body.

Answer:

suck dryeeeeeeeeeeeeeeeeeeeeeeeeeeeewwkkffjfkv3kmc,kflr

Explanation:

Answer:

The volume of solution that contains 1.9 moles of NaOH is 3.42 L

Explanation:

To solve the question, we note that the solution contains 1.9 moles of 0.555 M NaOH

Therefore, 1000 mL contains 0.555 moles of NaOH

1000/0.555 mL contains 1 mole of NaOH

1.9 × 1000/0.555 mL contains 1.9 moles of NaOH

Therefore, the volume of solution that contains 1.9 moles of NaOH is 1.9 × 1000/0.555 mL  or 3423.42342 mL = 3.42 L.

Answer:

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.

Explanation:

Final answer:

A chemical equation represents a chemical reaction, listing reactants on the left and products on the right, separated by an arrow, and must be balanced to reflect conservation of mass.

Explanation:

A chemical equation is a concise representation of a chemical reaction. It uses formulas to denote the reactants and products involved in the reaction, as well as symbols to convey additional information. The reactants, which are the starting materials, are written on the left-hand side of the equation. An arrow separates these from the products, which are the end result of the reaction, listed on the right-hand side. This arrow can be read as "yields" or "produces". To properly reflect the conservation of mass, a chemical equation must be balanced, ensuring that the same number and type of atoms are present on both sides of the equation. For example, the combustion of methane is represented by a specific chemical equation showing methane reacting with oxygen to produce carbon dioxide and water.

Answer:were is the passage

Explanation:

We’re the pasagee

At the constant pressure, the volume of the gas was equal to  65.31 μL at a temperature of 8.3ºC.

Charles's law can be described as that when pressure is kept constant, the volume of gas is directly proportional to its temperature.

Therefore,   V  ∝ T

[tex]\frac{V_1}{T_1} =\frac{V_2}{T_2}[/tex]                                                                  ..................(1)

Given, the initial temperature of the gas, T₁ = 24.2 ºC

T₁ = 24.2 + 273 = 297.2 K

The final temperature of the gas, T₂ = 8.3ºC

T₂ = 8.3 ºC + 273 = 281.3 K

Given, the initial volume of gas, V₁ = 69.0 μL then the final volume of the gas can be determined as:

Put the value of V₁, T₁, and T₂ in equation (1), and we get:

[tex]\frac{69}{297.2} =\frac{V_2}{281.3}[/tex]

[tex]V_2=\frac{69\times 281.3}{297.2}[/tex]

V₂ = 65.31 μL

Therefore, the volume of the gas was equal to  65.31 μL at a temperature of 8.3ºC. The volume of the gas will decrease when the final temperature is lowered as the pressure remains constant.

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Answer:

a.

Explanation:

Answer:

Acid Base

Explanation:

Acid base reactions produce water by combining H+ from acids and  OH- from bases and the remaining spectator ions form salts

Answer:

Acid-based

Explanation:

Acid base reactions produce water by combining H+ from acids and  OH- from bases and the remaining spectator ions form salts

Answer:

anonmetal

Explanation:

Answer:

9.28

Explanation:

pOH refers to a measure of hydroxide ions concentration. pOH tells about the alkalinity of a solution. If pOH is less than 7 then aqueous solutions are alkaline, acidic if pOH is greater than 7 and neutral if pOH is equal to 7.

Concentration of the hydroxide ions = 1.9 x 10-5 M

pH = [tex]-log(1.9\times 10^{-5})=4.72[/tex]

pOH = 14 - pH

=14 - 4.72 = 9.28

Answer:

I'm thinking Henri's wave and Geri's wave have the same amplitude and energy, but i'm not %100 sure

Explanation:

Answer:

B: Henri’s wave and Geri’s wave have the same amplitude and the same energy.

Explanation:

on edge2021!! hope this helps!!

Answer:

Covalent Bond

Explanation:

In the diagram Carbon and each of the 4 Hydrogens are sharing electrons. They are also both non metals. Both of these are characteristics of Covalent Bonds.

The type of bonding shown in the diagram is a Covalent bond. Covalent

bonding involves sharing of electrons between two elements.

Covalent bonding is necessary in the formation of new compounds and in

their attainment of a stable configuration.

In this scenario, the compound is known as methane (CH₄). The carbon atom

shares electrons with the Hydrogen atoms which helps them form the

compound CH₄ .

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Answer:

A and D

Explanation:

thank me later

Answer:

A and D

A. The products and reactants of both reactions are gases.

D. A catalyst is used for reaction 2.

Explanation: got it right on edge

Final answer:

An object orbiting the sun between Mars and Jupiter is likely an asteroid if its orbital period is between 3.3 to 6 years and it is not spherical but 'potato-shaped' or highly elongated, which indicates it is in the asteroid belt. Additional features like a cylindrical shape, as observed in the interstellar asteroid discovered in 2017, also suggest it's an asteroid.

Explanation:

To determine if the object orbiting the sun between Mars and Jupiter is an asteroid, several features can be considered. Primarily, asteroids are found mainly in the asteroid belt, which contains all asteroids with orbital periods between 3.3 to 6 years. If the object's orbit is within this range and lies near the plane in which Earth and other planets circle, this would suggest it is indeed an asteroid. Additionally, asteroids have a variety of shapes but are often not spherical due to their smaller size, which lacks sufficient gravity to pull them into a round shape. They can be "potato-shaped," exhibiting irregularities; however, if the object was found to have a highly elongated or cylindrical shape, this would also indicate it is an asteroid, as seen with the first interstellar asteroid discovered in 2017.

When designing a spacecraft to match course with an asteroid, one would likely include instruments for imaging, such as cameras to capture visual morphology; spectrometers to analyze the composition; and perhaps instruments to measure the asteroid's mass and gravity field. The purpose of these instruments would be to learn about the asteroid's physical properties, composition, and potentially its internal structure to gain insights into the early solar system's history and the composition of the material that formed the planets.

Answer:

0.0428 moles

Explanation:

6.35 g Mg(NO3)2 ×

[tex]\frac{1 \: mol}{148.32 \: g} [/tex]

6.35 g / 148.32 g

0.0428 moles

According to mole concept, there are 0.0428 moles  of magnesium nitrate  in 6.35 grams of magnesium nitrate.

Mole is defined as the unit of  the amount of substance . It is the quantitative measure of amount of substance of how many elementary particles are present in a given amount of  substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom or  ion depending on the type of substance. Amount of elementary entities  present in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.Number of moles=mass/molar mass= 6.35/148.3=0.0428 moles.

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