What is the correct symbol equation for the reactions between propanoic acid + sodium carbonate?

Answer: copper, zinc, lead, magnesium, potassium, sodium, iron, gold.

Explanation:

Answer:

Molybdenum is M, Einsteinium is E, and N is Nitrogen. Lastly, S is sulfur.

The answer to whether ethyl acetate is a polar or non-polar solvent is that it is a polar solvent.

Ethyl acetate is an organic solvent with a molecular formula of C4H8O2. It has a dipole moment due to its polar carbonyl group, which creates a partial positive charge on the carbon atom and a partial negative charge on the oxygen atom. The dipole moment makes ethyl acetate a polar solvent.

Polar solvents dissolve polar compounds, such as salts and acids, as well as non-polar compounds with polar functional groups, such as alcohols and ketones. Ethyl acetate is commonly used as a solvent in various applications, including in the production of pharmaceuticals, perfumes, and lacquers.
In summary, ethyl acetate is a polar solvent due to the dipole moment created by its carbonyl group. I hope this answers your question thoroughly.

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Answer: Metals

Explanation:

When an atom accepts an electron negative charge is created on atom and is called as anion.

When atom loses an electron positive charge is created on atom and is called as cation.

The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Thus metals form cations.

Answer:

125 pounds = 56.6990463 kilograms

Explanation:

Answer:

The correct answer is 0.92 g

Explanation:

The density is defined as the mass per unit of volume:

Density= mass/volume

From the data provided:

volume= 5.4 L

density= 0.17 g/L

Thus, to calculate the mass of helium:

mass= density x volume = 0.17 g/L x 5.4 L= 0.918 g ≅ 0.92 g

Answer:

xii. B. Smelting

xiii. D. Carbon

Explanation:

Smelting is known to be a process by which a metal is gotten. It is gotten either as the element or as a simple compound. This is obtained from metal's ore by heating. The heating can be done ordinarily in the presence of oxidizing agents, like air, or reducing agents, carbon e.g coke.

Zinc is gotten after Zinc oxide is heated in the presence of carbon.

This process is smelting.

Concentrated tetraoxosulphate acid is a strong dehydrating agent. It has the ability to char wood, paper, or sugar, leaving a carbonaceous residue. The charring effect is as a result of the carbon that is found in the wood.

The acid sucks in the oxygen and hydrogen, leaving behind the carbon; this results in the charring effect.

Answer:

Change in chemical properties

Explanation:

Answer:

1:13:6:10

Explanation:

answer from VNese

The balanced chemical equation for the reaction is:

HCl + H2O → H3O+ + Cl- In this reaction, HCl donates a proton to water, leading to the formation of hydronium ions (H3O+) and chloride ions (Cl-).

According to Bronsted-Lowry theory of acids and bases, which defines an acid as a substance that donates a proton (H+) and a base as a substance that accepts a proton. The reaction between an acid and water is a common example of this theory.

When an acid is dissolved in water, it donates a proton (H+) to water molecules, leading to the formation of hydronium ions (H3O+). The balanced chemical equation for this reaction is:

HA + H2O → H3O+ + A-

Where HA is the acid molecule and A- is the conjugate base.

For example, if hydrochloric acid (HCl) is dissolved in water, the balanced chemical equation for the reaction is:

HCl + H2O → H3O+ + Cl-

In this reaction, HCl donates a proton to water, leading to the formation of hydronium ions (H3O+) and chloride ions (Cl-).

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Answer:

Metilaminas

Explanation:

Las metilaminas a menudo están presentes en los tejidos corporales de organismos marinos como crustáceos, moluscos y en todos los peces marinos como N-óxido de trimetilamina, donde actúan para estabilizar la proteína que se desestabiliza por la presión y también se cree que actúa como un depresor del punto de congelación. en peces polares

Las metilaminas tienen olor a pescado podrido, basura o huevos podridos, de modo que una acumulación de metilamina en el cuerpo da como resultado la liberación de un olor a pescado en la amplitud, el sudor y la orina de un individuo

Answer:

it will evaoprate over time

Explanation:

Answer:

wdym ur confusing me

Explanation:

The mole fraction of the solute (NaCl) in a 3.45 m NaCl aqueous solution is 1, indicating that the solution consists entirely of NaCl (solute) and water (solvent).

To find the mole fraction of the solute (NaCl) in a 3.45 m (molality) NaCl aqueous solution, we need to consider the molar mass of NaCl and the density of the solution. However, since the density of the solution is not provided, we will assume it to be approximately equal to the density of water (1 g/mL).

To calculate the mole fraction (χsolute), we need the moles of solute and the total moles of solute and solvent. The moles of solute can be calculated by multiplying the molality (m) by the mass of the solvent (water in this case).

Given that the molality of the NaCl solution is 3.45 m, it means there are 3.45 moles of NaCl per 1 kilogram (1000 grams) of water.

To calculate the moles of NaCl:

moles of NaCl = molality (m) × mass of solvent (water)

= 3.45 mol/kg × 1000 g

= 3450 mol

Now, we need to calculate the total moles of solute and solvent in the solution. Since NaCl is an electrolyte that dissociates into two ions (Na+ and Cl-) when dissolved in water, the total moles of solute and solvent will be equal to the moles of NaCl.

Total moles of solute and solvent = moles of NaCl = 3450 mol

Finally, we can calculate the mole fraction of the solute:

χsolute = moles of solute / total moles of solute and solvent

= 3450 mol / 3450 mol

= 1

Therefore, the mole fraction of the solute (NaCl) in a 3.45 m NaCl aqueous solution is 1, indicating that the solution consists entirely of NaCl (solute) and water (solvent).

The completed question is given as,

The completed question is given as,

What is the mole fraction of solute in a 3.45 m NaCl aqueous solution?

Xsolute = ___

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Explanation:

Answer:

2..............

................

Answer:

A. 2

Explanation:

The effects of exposure were more pronounced in fish that had been raised in a less stressful environment, suggesting that environmental conditions can influence the impact of exposure to antidepressants.

1. The class of drugs being investigated in this study is antidepressants. They enter our waterways through excretion by individuals taking the medication, and disposal of unused medication into toilets or sinks that are connected to wastewater treatment plants.

2. C-start is an evasive maneuver that young fish use when they perceive a predator. This is important for larval fish survival because it helps them to avoid being eaten by predators.

3. In this investigation, researchers are testing two hypotheses. The first is that exposure to low levels of antidepressants can affect larval fathead minnows' behavior, and the second is that the effects of exposure will be more pronounced in fish that have been raised in a less stressful environment.

4. The researchers found that exposure to antidepressants at levels found in waterways can have a significant impact on the behavior of larval fathead minnows. Specifically, they found that the fish exposed to antidepressants were less likely to respond to the presence of predators, which could increase their risk of being eaten.

They also found that the effects of exposure were more pronounced in fish that had been raised in a less stressful environment, suggesting that environmental conditions can influence the impact of exposure to antidepressants.

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Answer:

The answer is "\(\bold{Cl_4}\)"

Explanation:

Please find the complete question in the attachment file.

In this question, it uses the Chemical equations, which is also known as the order to comply with the Law on Mass Conservation, substances must be balanced wherever volume cannot be generated or lost. This should be reacted that the reaction weight becomes equal to a product mass.

Answer:

B

Explanation:

The pH indicator bromothymol blue is blue in alkaline solution and yellow in an acidic solution. A solution in which the color of the indicator is yellow is already acidic, hence, to change the color to blue would require that the pH of the solution is increased from acidic to basic.

Yeast cell and sugar placed in the solution will result in the fermentation and further increase the acidity of the solution.

Water plants under bright light in the solution will consume CO2 and photosynthesize, thereby reducing the acidity of the solution.

Algae placed in the solution and left in the dark room will increase the acidity of the solution as a result of further addition of CO2 through the respiration of the algae.

A person blowing air into the solution through a straw will further increase the acidity of the solution due to the CO2 content of the air blown.

Therefore, the only action that will likely reduce the acidity of the solution by increasing the pH and thus turn the color of the indicator from yellow to blue is the presence of water plants in the solution placed under a bright lamp.

The structure of compound X is likely 2-Methyl-1-butene (CH3CH=C(CH3)CH2CH3) to yield a product without chirality centers during hydroboration-oxidation.

a. Suggesting three possible structures for compound X (C5H10) can involve considering different isomers of pentane and pentene. Here are three possibilities:

Pentane: CH3CH2CH2CH2CH3

2-Methylbutane: CH3CH(CH3)CH2CH3

2-Methyl-1-butene: CH3CH=C(CH3)CH2CH3

These structures satisfy the molecular formula C5H10 and represent different isomeric possibilities for compound X.

b. Hydroboration-oxidation of compound X yields a product with no chirality centers. This suggests that compound X must be an alkene with a symmetric or non-chiral structure. Among the three possible structures suggested above, the alkene 2-Methyl-1-butene (CH3CH=C(CH3)CH2CH3) would result in a product with no chirality centers when subjected to hydroboration-oxidation.

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In the case of cis-2-hexene, the bromine and water will add to the same face of the molecule, resulting in a meso-bromohydrin. The meso-bromohydrin can then be treated with base to form the epoxide(s).

To obtain the epoxide(s) from cis-2-hexene, we first need to perform a bromohydrin reaction. This involves adding bromine and water across the double bond to form a bromohydrin. The stereochemistry of the bromohydrin will depend on the stereochemistry of the starting alkene.

The structure of the meso-bromohydrin is:

     H          H

      |          |

   H--C--C--Br--C--C--H

      |          |

      H          OH

The base-catalyzed epoxide formation involves an intramolecular attack of the hydroxide ion on the bromine, resulting in ring closure and formation of the epoxide. The structure of the epoxide that will be obtained is:

      H          H

      |          |

   H--C--C--O--C--C--H

      |          |

      H          H

this reaction can result in either the formation of a single epoxide or a mixture of epimers, depending on the stereochemistry of the starting bromohydrin. However, in the case of a meso-bromohydrin, only one epoxide is formed.

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The product of the oxidation of the given aldehyde \((H3CCHO)\)would be a carboxylic acid \((H3CCOOH)\) with a single C-C bond and two \(C-O\) bonds.

The oxidation process involves the loss of hydrogen atoms and the addition of oxygen atoms, resulting in the formation of a carboxylic acid functional group. The product would have a ring structure with three carbon atoms, and the carboxylic acid functional group would be attached to one of the carbon atoms.

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The condensed structural formula for the product of the hydrogenation of 2-butene using a platinum catalyst  CH3 – CH2 – CH2 – CH3

What is hydrogenation of alkene ?

Molecular hydrogen (H2) and another substance or element undergo a chemical reaction known as hydrogenation, typically in the presence of a catalyst such as nickel, palladium, or platinum. The method is frequently used to saturate or decrease organic molecules.

In order to give shortenings a hard firmness and plasticity, hydrogenation is the process of saturating certain double bonds and converting others to trans configuration. This enables the formation of solid and semi-solid fats.

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Answer:

The concentration is 0.2 M HCI / 15mL 62g

Explanation:

----->

The equilibrium constant for this reaction is denoted as Ka. The value of Ka for formic acid is 1.77 x 10^-4 at 25°C.
c) 1.75 M solution of formic acid at 25°C has a percent ionization of approximately 66%.

The percent ionization of a weak acid is the ratio of the concentration of the dissociated acid to the initial concentration of the acid, multiplied by 100. It is represented by the formula: % Ionization = (concentration of H+ ions / initial concentration of acid) x 100
To determine the percent ionization of formic acid, we need to first calculate the concentration of H+ ions produced by the dissociation of the acid. The dissociation of formic acid can be represented by the equation:
HCOOH ⇌ H+ + HCOO-.

Percent ionization is the percentage of the acid molecules that dissociate into ions in a solution. To find the percent ionization for formic acid, we need the ionization constant (Ka) value. For formic acid, Ka = 1.8 x 10^-4 at 25°C. We can use the following formula to determine the percent ionization: Percent Ionization = ([H+]/[HA_initial]) x 100
where [H+] is the concentration of H+ ions, and [HA_initial] is the initial concentration of the acid.

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The total mass of the products is 853.8 g.

We know that we have to apply the principles of stoichiometry so as to be able to obtain the mass of the mass of the products and then the total mass of the products that is obtained in the reaction.

We have that in the question; 496. 5 grams of lead II nitrate reacts with potassium bromide is such a way that the lead II nitrate would be completely consumed in the reaction. This means that the lead II nitrate is the limiting reactant in the reaction.

Number of moles of the lead II nitrate = 496. 5 grams /331 g/mol

= 1.5 moles

If 1 mole of  lead II nitrate produces 1 mole of lead II bromide

Mass of lead II bromide produced = 1.5 moles * 367 g/mol

= 550.5 g

If 1 mole of lead II nitrate produces 2 moles of potassium nitrate

1.5 moles of lead II nitrate produces  1.5 * 2 /1

= 3 moles of  potassium nitrate

Mass of  potassium nitrate = 3  moles * 101.1

= 303.3 g

Total mass produced = 550.5 g + 303.3 g

= 853.8 g

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Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case

Answer:

Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.

Explanation:

Answer:

Oxygen is the most abundant element in the Earth's crust.

Explaination: It makes up 46% of the mass of the Earths crust.

Answer

The most abundant elements in the human body are oxygen, carbon and hydrogen. Oxygen makes up 65% of the body.