How many cm are equal to 1.45m

Adsorbent materials, such as activated carbon or silica gel, are designed to attract and hold onto specific molecules or particles from a fluid or gas. If you flake off the adsorbent, you risk releasing those molecules or particles back into the surrounding environment, potentially causing contamination or harm.

Flaking off the adsorbent can disrupt its ability to effectively remove unwanted substances, reducing its overall efficiency and effectiveness. Therefore, it is important to handle adsorbent materials carefully and avoid flaking them off whenever possible.

1. Safety: Adsorbents are often used to remove contaminants, toxins, or other harmful substances from materials or environments. Flaking off adsorbent could release these contaminants, posing a risk to your health and the environment.

2. Effectiveness: Adsorbents work by providing a large surface area for the adsorption of targeted substances. Flaking off adsorbent may reduce its surface area, decreasing its overall effectiveness in capturing and holding contaminants.

3. Waste: Flaking off adsorbent may lead to unnecessary waste, as the adsorbent material will no longer be used to its full capacity. This could result in increased costs for additional adsorbent materials or disposal of partially used adsorbents.

In summary, you shouldn't flake off adsorbent to ensure safety, maintain its effectiveness, and minimize waste.

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You should not flake off adsorbent because doing so can negatively impact its efficiency and compromise the purpose it serves.

Adsorbents are materials designed to adhere or hold molecules of a substance on their surface, typically used in purification and separation processes. They have a high surface area and porous structure, which enables them to effectively adsorb and retain impurities. Flaking off adsorbent may result in the loss of these crucial properties. The process can cause damage to the porous structure, reducing the overall surface area available for adsorption. This, in turn, reduces the adsorbent's capacity to capture and retain impurities, ultimately affecting the purity of the end product.

Furthermore, flaking off adsorbent can lead to the generation of fine particles or dust, these particles may cause contamination in the process or system where the adsorbent is employed, impacting product quality and posing potential safety hazards. Lastly, the act of flaking off adsorbent may also increase the likelihood of human exposure to harmful substances that are adsorbed onto the material, this exposure can lead to health risks, especially when dealing with toxic or hazardous compounds. You should not flake off adsorbent because doing so can negatively impact its efficiency and compromise the purpose it serves.

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Answer:

a. Two smaller, more stable nuclei

Explanation:

Answer:

a

Explanation:

took the quiz

Answer:

2.4×1024 atoms.

Explanation:

Please mark me as brainliest

Explanation:

i found this hope it helps

The dot structure that can be shown to be incorrect is the dot structure that has been shown by option A

The Lewis structure is based on the concept that atoms tend to gain, lose, or share electrons in order to achieve a stable electron configuration similar to that of a noble gas. In the Lewis structure, the valence electrons of the atoms are represented as dots around the symbol of the atom.

We can see that in the dot structure that is in option A the both atoms are coming from the hydrogen atoms and shoud not be differently marked.

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The best description of a chemical bond is A: "A chemical bond holds atoms together."

A chemical bond refers to the force of attraction between two or more atoms that holds them together to form a stable chemical compound. Atoms bond together by sharing, gaining, or losing electrons, resulting in the formation of molecules or compounds.

Chemical bonds are essential for the formation of substances and play a crucial role in determining the properties and behavior of matter. They involve the interaction of valence electrons, the outermost electrons in an atom, which are responsible for chemical bonding.

In summary, option A provides the most accurate and comprehensive description of a chemical bond, emphasizing its role in holding atoms together to form stable compounds. Therefore, Option A is correct.

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Answer:

CH3CH2CH2CH3

Explanation:

The boiling point of a compound depends on the nature of intermolecular interaction between the molecules of the compound.

If a molecule is nonpolar and has a low molecular mass, then its molecules are most likely held together only by weak intermolecular bonds such as dispersion forces. These forces are easily broken and the molecules move apart hence the molecule possess a low boiling point.

Polar molecules and molecules having higher molecular mass tend to have higher boiling points.

Among all the compounds listed, CH3CH2CH2CH3 is non polar and has the lowest molecular mass hence it exhibits the least boiling point.

Answer:

c

Explanation:

I just learned all this in chemistry too lol

got 100 on the test last week so its good

Experiments with gold foil indicated that atoms contain a positively charged, dense center and the correct option is option C.

Experiments with gold foil, known as the Rutherford gold foil experiment, were conducted by Ernest Rutherford in 1911. In this experiment, he bombarded a thin gold foil with alpha particles.

Most of the alpha particles passed through the foil with little deflection, but some of them were deflected at large angles, and a small fraction even bounced back. This observation led Rutherford to conclude that the atom contains a positively charged, dense center called the nucleus, where most of its mass is concentrated. He proposed the nuclear model of the atom, which became a significant advancement in the understanding of atomic structure.

Thus, the ideal selection is option C.

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The mass of carbon dioxide released during the reaction is 2.6 grams.

To determine the mass of carbon dioxide released during the reaction between sodium hydrogen carbonate (NaHCO3) and acetic acid (CH3COOH), we need to calculate the difference in mass before and after the reaction.

Before the reaction:

Mass of NaHCO3 = 3.8 g

Mass of acetic acid = 10.5 g

Total mass before the reaction = Mass of NaHCO3 + Mass of acetic acid = 3.8 g + 10.5 g = 14.3 g

After the reaction:

Mass of the contents of the reaction vessel = 11.7 g

To find the mass of carbon dioxide released, we calculate the difference in mass:

Mass of carbon dioxide released = Total mass before the reaction - Mass of the contents of the reaction vessel

= 14.3 g - 11.7 g

= 2.6 g

Therefore, the mass of carbon dioxide released during the reaction is 2.6 grams.

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The amount of Al2S3 remaining is 0.096 mol the number of moles for each compound using their molar masses. The molar mass of Al2S3 is 150.16 g/mol.

According to the given reaction, we have 20.00 g of Al2S3 and 2.00 g of H2O. To find the amount of Al2S3 remaining, we need to calculate the limiting reactant. First, we determine the number of moles for each compound using their molar masses. The molar mass of Al2S3 is 150.16 g/mol.

Therefore, we have 20.00 g / 150.16 g/mol

= 0.133 mol of Al2S3.

The molar mass of H2O is 18.02 g/mol.

Hence, we have 2.00 g / 18.02 g/mol = 0.111 mol of H2O. Since the reaction requires a 1:3 ratio between Al2S3 and H2O, 0.111 mol of H2O would require 0.111 mol * (1 mol Al2S3 / 3 mol H2O)

= 0.037 mol of Al2S3.

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V = Mass /Density

Density is supposed to be given, but its not
solids typically have a density of 5.03 g/cm^3

V = 10.3/5.03
V = 2.05 cm^3

Answer:

3.2

10×10×10

=1000

so 3.2×1000

=3200

Answer:

27*6 dkfkdh hshsnnsbssshs ss. hhshsns svs s ssjssgsyz

Explanation:

ysgshssbs

The molarity of the solution made by dissolving 0.05 mole of hydrogen chloride (HCl) in 2 L of water (H₂O) is 0.025 M

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

Molarity = mole / Volume

Molarity = 0.05 / 2

Molarity = 0.025 M

Thus, the molarity of the solution is 0.025 M

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Answer:

Energy of the Reactant: increases

Energy of the product: not at all

Rate of reaction: increases

Enthalpy: not at all

Activation energy: decreases

Explanation:

Catalyst is a substance that increases the rate of reaction than normal to form a product.

Catalyst affect differently to different factors of reaction. A catalyst is meant to increase rate of reaction by lowering the activation energy, so that collision between reactant increase and that passes the energy barrier to form the product faster.

Catalyst has no effect on Enthalpy as change in enthalpy only depends on the chemical compositions of the reactants and products.

Catalyst also increases energy of reactant so that they can collide faster than before and do not affect the energy of product at all.

Hence, the correct answer is:

Energy of the Reactant: increases

Energy of the product: not at all

Rate of reaction: increases

Enthalpy: not at all

Activation energy: decreases

Answer:

The momentum would send things flying eastward

Explanation:

Since earth is rotating at around a speed of thousand miles per hour you could expect things to fly eastward.

When MgCl2 (Magnesium chloride) dissolves in water gives a faintly acidic solution (pH = approximately 6).

Answer:

0.35moles

Explanation:

when 156g of Al reacts with 2molesof Al2O3 then 27g of Al reacts with what then u cross multiply and solve ur answer

0.35moles of  Al\(_2\)O\(_3\)  will be formed when 27 grams of Al reacts completely with O\(_2\). A mole consists of precisely 6.022× 10²³particles.

A mole is just a measuring scale. In reality, it's one of the International System of Units' seven foundation units (SI). When already-existing units are insufficient, new ones are created. The levels at which chemical reactions frequently occur exclude the use of grams, yet utilizing actual numbers of atoms, molecules, or ions would also be unclear.

A mole consists of precisely 6.022× 10²³particles. The "particles" might be anything, from tiny things like electrons and atoms to enormous things like stars or elephants.

4 Al + 3 O\(_2\) → 2 Al\(_2\)O\(_3\)

moles of aluminium = 27 /26=1.03moles

The mole ratio between Al and  Al\(_2\)O\(_3\) is 2:1

mole of  Al\(_2\)O\(_3\)= 0.35moles

Therefore, 0.35moles of  Al\(_2\)O\(_3\)  will be formed when 27 grams of Al reacts completely with O\(_2\).

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The advantages of water as a liquid medium are : Water remains liquid at the higher temperature than other substances.

Water molecules have the charge separation that allows the formation of the chemical bonds which can not be form by the other substances.

Water is the only one substances that will floats when frozen.

Water is the unique substance which is formed by the two molecules of the hydrogen and the one molecule of the  oxygen. The water is found in the different forms on the earth, like as ocean river etc.

The major part of the water is found in the liquid medium at the earth's temperature.

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The balanced chemical equations for the given reactions are:

16Ag + S₈  →  8Ag₂S

2 Al + 3 Br₂  →  2 AlBr₃

2 KClO₃  →  2KCl  + 3 O₂

CH₄  + O₂  →  CO₂   + 2 H₂O

2Al  + 3 O₂  → Al₂O₃

2 H₂O₂  → 2 H₂O   + 2 O₂

A balanced equation can be defined as an equation in which the number of atoms of every element involved in the reaction is equal on either side of the chemical equation.

The law of conservation of matter has to be obeyed by a balancing of a chemical equation.

By following the law of conservation of matter, the total mass of the elements of reactants will be equal to the total mass of products in a balanced chemical equation.

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A substance burning in the presence of oxygen produces heat and light, a process known as combustion. Combustion is the process through which fuel, most frequently a fossil fuel, reacts with oxygen in the air to produce heat.

Boilers, furnaces, kilns, and motors are all powered by the heat generated during the burning of fossil fuels. The difference between combustion and other related processes occurring in the presence of oxygen is due to the spontaneous and intense nature of combustion.

The combustion of CH₄ is given as:

CH₄ + 2O₂ → CO₂ + 2 H₂O + energy

Here 2 moles of H₂O are produced.

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Thermodynamic spontaneity can be measured by changes in Gibbs free energy (ΔG). The reference point for whether a process will proceed in the forward or reverse direction is the sign of ΔG.

A negative ΔG indicates a spontaneous process that will proceed in the forward direction, while a positive ΔG indicates a non-spontaneous process that will proceed in the reverse direction.

Tendency of a process to occur without the need for external intervention is known as thermodynamic spontaneity. In other words, it describes whether any process can occur naturally or spontaneously under the specific given conditions and without requiring additional energy input.

The concept of spontaneity is related to the second law of thermodynamics, which states that entropy of isolated system increases increase over the time.

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Here's your answer, hope this helps!

Answer:

575 g

Explanation:

1 kg of sodium hydroxide is 1000/40=25 mol.

So 25 mol of sodium will be needed.

25 mol of sodium is 575 g.

According to the stoichiometry of the given chemical equation, 575 g s of sodium would be needed to produce 1.00 kg of sodium hydroxide.

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 .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

46 g sodium gives 80 g sodium hydroxide, thus 1000 g sodium hydroxide requires 46×1000/80=575 g sodium.

Thus, 575 g s of sodium would be needed to produce 1.00 kg of sodium hydroxide.

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In the pair of sodium and potassium the second element has a higher first ionization energy but a lower second ionization energy then the first element.

Ionization energy can be defined as that amount of energy which is required in order to pull out an electron from the vicinity of an atom completely.

When we remove out first electron from the atom it is called the first ionization energy and when we pull out the second electron from the atom it is known as the 2nd ionization energy.

As per the question when we talk about Sodium and potassium, potassium has a higher ionization energy but a lower second ionization energy then sodium because of the size difference between the two atoms.

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Answer:

Those people could sustain on Mars, by living closer to the poles

Explanation:

As it is given that caps involve the water ice instead of the carbon dioxide

And, current observations of spectrum analyzed that the polar caps are totally different from one other i.e northern one involves more water ice while on the other hand,  the southern one involves most of the carbon dioxide

Moreover, the astronomers unable to see to spectrum portions as the atmosphere absorbs the wavelength

So we conclude that the people could survive on mars if they live near to poles

Answer:

tertiary

Explanation:

tertiary halogenoalkanes are more reactive than primary and secondary as the carbocation is more stable due to alkyl groups( have high electron density) donating electrons to stabilise the carbocation

Answer:

both reactants and products

Explanation:

For a reversible reaction, it is likely that both reactants and products are present at equilibrium.

-TheUnknownScientist

Mendeleev used the question "What is the underlying pattern that governs the properties and relationships of elements?" to guide his scientific inquiry and eventually lead to the creation of the periodic table of elements.

According to their atomic number, electron configurations, and chemical properties, elements are arranged in the periodic table. To display the recurring patterns of an element's chemical and physical properties, it is arranged in rows and columns. Each element has a distinctive symbol that denotes its atomic number, and the elements are listed in ascending order of atomic number. A crucial tool for chemists, the periodic table is used to forecast the properties of new elements as well as the chemical behavior of existing elements. A periodic table is a crucial tool for scientists working in the fields of chemistry, physics, and other sciences.

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Answer: D. Scientists can come to different conclusions based on the same data.