1. Ethanoic acid is a weak acid and hydrochloric acid is a strong acid.​

Answer:

2. Molten rock rises in Earth's mantle caused by (pressure)

Explanation:

i think i just had a similar question

Answer:  

The best explanation for both the first and second claims is that aluminum is a pure substance: Aluminum is one form of atom and its structure is always the same.  Aluminum has an evenly blended composition.

Explanation:

Aluminum is one type of atom and its composition is always the same, this statement also gives the property of a pure substance . In fact, pure substances are often homogeneous and contain only one form of atom or molecule.

One of a pure substance's key characteristics is that it has a uniform composition that is homologous in nature, and can be mixed uniformly throughout. ALUMINUM's second statement notes the property of a pure substance. Aluminum is also homologous in terms of occurrence.

The atoms are very small and have a diameter of around 1 x 10-10 meters. It's difficult to view them using a light microscope due to their limited size. Although it may not be possible to view an atom using a light microscope, a number of techniques have been developed, such as electron microscopy, to observe and research the structure of atoms. Therefore, the statement that the aluminum atom can not be seen through a microscope does not explain the pure content of aluminum.

This argument - 'Aluminum contains substances which are not bound together' does not explain the fact that it is a pure material as it notes that the property of a pure material does not exist in relation to its chemical bonds.

.Therefore, the first and second aluminum statements give the best description of a pure material.

The following are the predictions if whether each of the substances will conduct an electric current: a) Conducts b) Does not conduct c) Does not conduct hence the correct option is b.

a) Potassium hydroxide (KOH) is an ionic compound that dissolves in water to form potassium ions (K+) and hydroxide ions (OH-), which allows the solution to conduct an electric current.

b) Glucose (C6H12O6) is a covalent compound and does not dissociate into ions when dissolved in water, so the solution does not conduct an electric current.

c) Ethanol (C2H5OH) is also a covalent compound and does not dissociate into ions when dissolved in water, so the solution does not conduct an electric current.

The correct options are therefore a)conducts, b) does not conduct and c) does not conduct which corresponds to choice b.

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Exothermic reactions are generally defined as chemical reaction that generate heat.

What is exothermic reaction?

A chemical process known as an exothermic reaction releases energy as heat or light. It is an endothermic reaction's opposite. expressed as reactants + products + energy in a chemical equation.

You can feel the heat being produced when you put your palm close to one of these reactions because they emit heat into the surrounding area.

When you place your hand on the container of an exothermic reaction, you can feel that the container becomes chilly. The reverse (reactions that absorb heat) are known as endothermic reactions.

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Answer:

16.84 dm3 of hydrogen peroxide will be used to produce 8.42 dm3 of oxygen.

Explanation:

Equation for the reaction:

H2O2 --------> 1/2 O2 + H20

1 mole of hydrogen peroxide reacts to form half mole of oxygen

At STP, 22.4 dm3 of hydrogen peroxide will react to form 1/2* 22.4 dm3 of oxygen

So 22.4 dm3 of hydrogen peroxide forms 11.2 dm3 of oxygen

If 8.42L of oxygen were formed, how many volume of hydrogen peroxide is used?

From 22.4 dm3 of H2O2 = 11. 4 dm3 of O2

(22.4 * 8.42 / 11.4 )dm3 of hydrogen peroxide will form 8.42 dm3 of oxygen.

= 16.84 dm3 of hydrogen peroxide will be used.

In the reaction of hydrogen peroxide to form oxygen, 16.84 dm3 of hydrogen peroxide will give off 8.42 dm3 of oxygen.

Answer:

0.01596 M

Explanation:

This is a stoichiometry problem hence we need to obtain the balanced reaction equation before we can effectively proceed in solving the problem at hand.

Given the reaction equation;

2H2O2(aq) -------> 2H2O(l) + O2(g)

2 moles of hydrogen peroxide yields 1 mole of oxygen

I mole of oxygen occupies 22.4 L volume.

Hence

2 moles of hydrogen peroxide produces 22.4 L of oxygen

x moles of hydrogen peroxide produces 8.42 L of oxygen

x= 2 × 8.42/22.4

x= 0.75 moles of hydrogen peroxide

From

Number of moles = concentration × volume

Number of moles= 0.75 moles

Volume = 47 L

Concentration of hydrogen peroxide= number of moles/ volume

Concentration of hydrogen peroxide= 0.75 moles/47 L

Concentration of hydrogen peroxide= 0.01596 M

Answer:

no so boring........................

Answer:

my guess would be limestone disolving in water

Explanation:

Answer:

It is Limestone rocks dissolving in water

Explanation:

I did same exact quiz and I got it correct

Answer: Halogens are highly reactive, and they can be harmful or lethal to biological organisms in sufficient quantities. This reactivity is due to high electronegativity and high effective nuclear charge. Halogens can gain an electron by reacting with atoms of other elements. Fluorine is one of the most reactive elements.

Brainliest pwease if i am successful in helping you!

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Answer: They use their feathers

Explanation: They fluff their feathers for warmth I think so at least

Because I'm sure they stay in the forest and don't really hibernate

Answer:

They fluff there feathers for warmth

Explanation:

I did the test and got 100

Explanation:

The +1 is their oxidation sate and this implies that the love to form bonds where they can lose one of their electrons.

The positive value indicates that an atom has lost an electron.

Group elements have one electron in their outermost shell. If they lose this one electron, they become isoelectric with the nearest noble gases and this imparts a stability on the atom.

So, group 1 elements have an oxidation state of +1

Answer:

The study of reaction "Rates" is called Chemical "Kinetics.

Radiant Energy from the sun is the source of the energy that plant cells use for photosynthesis. The first response is the correct answer.

Nearly all of the energy on Earth comes from the sun. Through a process known as photosynthesis, it enables plants and other organisms to convert water and carbon dioxide into sugars.

The function of sunlight in photosynthesis is to supply energy. Heat and light are two different types of energy that the sun emits.

Chlorophyll can capture energy, which can then be converted into sugar during photosynthesis. Photosynthesis slows down when a plant receives insufficient sunlight. This implies that the plant's energy source—sugar—might not be getting to it in sufficient amounts. We can clearly see how crucial sunlight is to life.

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To obtain a more reliable or precise value for the optimum temperature in an experiment, several changes can be made. Here are some suggestions: Replicate the experiment, Increase sample size, Use a narrower temperature range, Utilize more precise temperature control etc

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Answer:

The question is very complicated. In the liquid you should be able to see the solid. Anyway here is your answer. Hope it helps!

Explanation:

Mixing of Substances:

Many types of solids will dissolve into liquids under the right conditions. Certain factors will speed up the process of dissolving, including stirring the substance and heating it.

Answer and Explanation:

When a solid dissolves into a liquid, a solution is made. This happens because the solid is made up of particles that will come apart, or dissociate, in the liquid. It will appear that the solid has disappeared into the liquid, when in fact, its particles are still there. For example, salt (NaCl) easily dissolves in water. From a chemistry standpoint, it does so because the salt molecules separate into their charged ions once in the water. The ions become attracted to the slightly charged water molecules, making them stay in the solution. This process can be reversed. If the water is evaporated, the salt ions will come back together to form NaCl molecules.

Answer:

im pretty sure it is D

Explanation:

this is an old term for a microscopic organisms that included bacteria, protozoans, and very small animals

like a lab report or something?

The correct structure for (2s,5r)-5-ethoxy-2-octanol is: CH3CH2CH(OH)CH2CH(CH2CH3)CH2CH2CH3

The prefix (2s,5r) indicates that the stereochemistry at positions 2 and 5 of the molecule are in the S and R configurations, respectively. The suffix -ol indicates that the molecule is an alcohol, and the prefix ethoxy- indicates that there is an ethoxy group (CH3CH2O-) attached to the fifth carbon of the octanol chain. Therefore, the final structure is as shown above.

CH3CH2CH(OH)CH2CH(CH2CH3)CH2CH2CH3

1. First, identify the parent chain: The base name 'octanol' indicates an 8-carbon chain with an -OH group (alcohol). So, the parent chain is CH3(CH2)6CH2OH.
2. Next, identify the stereochemistry at the chiral centers: The (2S,5R) configuration indicates the stereochemistry of the chiral centers at positions 2 and 5.
3. Identify the substituents and their positions: The '5-ethoxy' indicates an ethoxy group (CH3CH2O-) attached at the 5th carbon of the parent chain.
4. Combine all the information: Connect the substituent to the parent chain at the specified position, and include the stereochemistry at the chiral centers.

So, the final structure of (2S,5R)-5-ethoxy-2-octanol is:

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The nitrate anion must have 6 additional electrons, making it a negative ion with a total of 32 electrons.

In the Lewis structure of the nitrate anion, NO3–, the central nitrogen atom is surrounded by three oxygen atoms and is connected to them with single covalent bonds. If each atom is to obey the octet rule, then the nitrogen atom must have 8 valence electrons, and each of the oxygen atoms must have 6 valence electrons. This means that the nitrate anion must have a total of 8 + 3×6 = 26 valence electrons. The nitrate anion must also have a total of 8 + 3×8 = 32 electrons when considering the octet rule for the oxygen atoms. As a result, the nitrate anion must have 6 additional electrons, making it a negative ion with a total of 32 electrons.

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Complete question:

What is the Lewis structure of the nitrate anion, NO3–, if all atoms obey the octet rule?

Answer:

B: 1s²2s²2p¹

Na: 1s²2s²2p⁶3s¹

Explanation:

A = 2

B = 1

C = 2

D = 6

E = 1

Hope that helps.

Answer:

B: 1s2 2sA2pB

A = 2

B = 1

Na: 1s22sC2pD3sE

C = 2

D = 6

E = 1

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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Starch, glycogen, proteins, and fats are all macromolecules that can be broken down and used as a source of energy for cellular respiration.

Each of these molecules enters the process of cellular respiration at different stages and through different pathways.

Starch: Starch is a complex carbohydrate made up of many glucose molecules linked together. In order to enter the process of cellular respiration, starch must first be broken down into glucose molecules. This occurs through the process of hydrolysis, in which water molecules are used to break the bonds between the glucose molecules. Once the glucose molecules have been released, they can enter glycolysis, the first stage of cellular respiration.

Glycogen: Like starch, glycogen is a complex carbohydrate made up of many glucose molecules linked together. Glycogen is stored in the liver and muscle tissue and can be broken down into glucose molecules when needed. The process of breaking down glycogen into glucose molecules is called glycogenolysis. Once the glucose molecules have been released, they can enter glycolysis and continue through the rest of cellular respiration.

Proteins: Proteins are made up of amino acids and can also be used as a source of energy for cellular respiration. Before proteins can enter the process of cellular respiration, they must first be broken down into their constituent amino acids. This process is called proteolysis and can occur in the digestive system or within cells themselves. Once the amino acids have been released, they can be converted into pyruvate, acetyl-CoA, or other molecules that can enter the various stages of cellular respiration.

Fats: Fats are a rich source of energy and can be broken down into smaller molecules called fatty acids and glycerol. The breakdown of fats into fatty acids and glycerol is called lipolysis and occurs in the cytoplasm of cells. The fatty acids can be converted into acetyl-CoA, which can then enter the citric acid cycle, the second stage of cellular respiration. The glycerol can be converted into a molecule called glyceraldehyde 3-phosphate, which can enter glycolysis.

All of these molecules can enter the process of cellular respiration, but they must first be broken down into smaller molecules that can enter the various stages of cellular respiration. Starch and glycogen must be broken down into glucose, proteins into amino acids, and fats into fatty acids and glycerol before they can be used as a source of energy in cellular respiration.

Question - Explain how and where each of these molecules may enter the process of cellular respiration: Starch Glycogen Proteins Fats

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Yes, a miscibility gap exists for a mixture of water and 1-butanol at 928C. The range of compositions over which this gap exists is between the eutectic point and the upper cloud point.

The eutectic point is the composition where the two components form two liquid phases, and the upper cloud point is the composition where the two components form a single liquid phase.

The van Laar parameters for this system (L12) indicate the degree to which changes in temperature, pressure, and composition affect the relative solubility of the two components.

For a mixture of 1-butanol and water at 928C, the relative solubility of the two components decreases as the composition deviates from the eutectic point, resulting in a miscibility gap. The range of compositions over which this gap exists is determined by the van Laar parameters.

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Answer:

we have four moles in 56L of co2

An atom that has gained or lost electrons is considered to have experienced an ion if it now has a net charge.

Reduction is the process of gaining electrons, whereas oxidation is the process of losing electrons. Oxidizing agents are any substances that make other substances lose electrons (become oxidized).

Since it makes them more stable and requires less energy to sustain, atoms become ions by shedding or gaining electrons. An atom is in its most stable state when its outermost energy level is packed with as many electrons as is physically possible.

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Answer:

A compound is a substance containing two or more kinds of atoms.

The factors affect wave height is the duration of the wind

Answer:

all answers are correct

Fetch

Strength of wind

Direction of the wind

Duration of wind

Explanation:

i took the quiz hope this helps!

Only plant cells have a cell wall, chloroplasts, and a large vacuole.

I hope this helped :)

Features which are found in plant cells only are the chloroplast, large vacuole and cell wall.

Therefore, Only plant cells have "a cell wall, chloroplasts and a large vacuole."

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