How many cells are a result of Meiosis?

Because it is not very effective at transferring \(H^{+}\) ions to water, vinegar is a weak acid. Less than 0.4% of the \(CH_{3}CO_{2}H\)molecules in a 1 M solution interact with water to create \(H_{3}O^{+}\)and \(CH_{3}CO_{2}^{-}\) ions. More than 99.6% of the acetic acid molecules are still whole.

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Answer:

Driving cars

Explanation:

Because driving cars won't effect climate change

Answer:

Protons

Explanation:

Metals, Nonmetals, and Metalloids group the elements on the periodic table. Protons is not one of these but rather a subatomic particle that all the elements have.

Answer:

protons

Explanation:

Answer: what do u need help with ?

Explanation:

Answer:

91.29 g of Na₃PO₄ are needed to produce 1.67 moles of sodium ions.

Explanation:

The formula for sodium phosphate is Na₃PO₄

Molar mass of sodium phosphate = 164 g/mol

The dissociation of one mole of sodium phosphate produces 3 moles of sodium ions;

Na₃PO₄ ------> 3Na⁺ + PO₄³

Number of moles of Na₃PO₄ that will produce 1.67 moles of Na⁺ = 1/3 * 1.67 = 0.556 moles  of Na₃PO₄

Mass of 0.556 moles of Na₃PO₄ = 0.556 moles * 164 g/mol = 91.29 g

Therefore, 91.29 g of Na₃PO₄ are needed to produce 1.67 moles of sodium ions.

Answer:

sulfur

Explanation:

since sulfur is in group six meaning it has six election in the outer most shell hence it gains two elections for it to be stable

Explanation:

Factors which determine how fast a solute will dissolve are as follows.

1). Surface area of dissolving particles - More is the surface area of dissolving particles available more it will come in contact with high number of particles. As a result, more interaction causes more collision between particles due to which more solute will dissolve in solvent.

2). Stirring - More stirring in a solution will lead to more number of collisions between the particles. Hence, more solute particles will dissolve in it.

3). Temperature - More is the temperature provided to solution more will be kinetic energy of its particles. This causes more collisions and therefore, more dissolution of solute particles in the solvent will take place.

Relationship between metal and ceramic is accurately represented by the statement that metal is a better conductor than ceramics.

Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold. Substances which enable conduction are called conductors.Conductors allow passage heat and electricity through the material.

In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .

When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:

1) heat conduction

2) electrical conduction

3)sound conduction

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Answer:

Calcium

Explanation:

Zinc cannot displace Ca because calcium is above it in the reactivity series

At 25 degrees Celsius, with 50g of sugar, the solution will appear clear and homogeneous, with all the sugar dissolved. The ratio of dissolved sugar to undissolved sugar will be 50:0, as all the sugar has dissolved.

If an additional 55g of sugar is added to the 25-degree water, the solution will become supersaturated. This means that the water cannot dissolve all the sugar, resulting in the excess sugar remaining undissolved as solid particles at the bottom of the container. The solution will appear cloudy, and the ratio of dissolved sugar to undissolved sugar will be 50:5, as only 50g of the added sugar can dissolve.

When the solution is heated, the solubility of sugar increases. As a result, more sugar will dissolve, and the solution will become clear again. The ratio of dissolved sugar to undissolved sugar will approach 105:0 as the temperature increases and more sugar dissolves.

If the heated solution is slowly cooled back to 25 degrees Celsius, the solubility of sugar decreases. This will cause the excess sugar to come out of the solution and form solid crystals, which will be visible as sugar particles. The solution will appear cloudy again, and the ratio of dissolved sugar to undissolved sugar will depend on the amount of sugar that remains dissolved after cooling.

Adding a seed crystal to the mixture provides a surface for sugar crystals to form, resulting in the rapid crystallization of the remaining dissolved sugar. The solution will become saturated with sugar crystals, and the ratio of dissolved sugar to undissolved sugar will be close to 0:55, as most of the sugar will have crystallized. The solution will appear cloudy with a significant amount of sugar crystals present.

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When the Equilibrium equation for ammonia is solved, x is obtained:

using this value of x to calculate the concentration of the other components in the equilibrium:

[H2] = 0.275mol/L

[N2]=0.901mol/L

Then we can calculate the equilibrium constant using the following equation:

Answer:

186.3g

Explanation:

4.5moles of K₂CO₃  is in 1000ml

? moles of K₂CO₃ is in 300 ml

(4.5 × 300)/ 1000 = 1.35 moles of K₂CO₃

1 mole of K₂CO₃ = (39 × 2) + 12 + (16 × 3) = 78 + 12 + 48 = 138g

1.35 moles of K₂CO₃  = ?

= (1.35 × 138)/1 = 186.3g

The electrophilic nitration of benzoic acid involves the attack of the nitronium ion ([NO2]+) on the benzene ring of the benzoic acid. The intermediate formed is a positively charged arenium ion, which can resonate between different resonance forms.

One of the resonance forms of the intermediate cation is shown below:

   O                        O

  //                        //

 /C+           <----->     /C

 \                          \

  \                          O-

In this resonance form, the positive charge is delocalized over the carbon atom and the adjacent oxygen atom. The resulting resonance hybrid is stabilized by the delocalization of the positive charge over the ring, which lowers the overall energy of the system.

The nitronium ion can attack at the meta position, which leads to the formation of 1,3-nitrobenzoic acid. The attack at the ortho or para positions would lead to the formation of other isomeric products.

The reason for the selective formation of 1,3-nitrobenzoic acid is due to the resonance stabilization of the intermediate cation. The meta position is less hindered than the ortho and para positions, and the resonance form shown above places the positive charge at the meta position. Therefore, the attack of the nitronium ion at the meta position is favored over the other positions. Additionally, the resonance form shown above places the negative charge of the carboxylate group at the para position, which makes it less favorable for the nitronium ion to attack at this position.

Overall, the resonance stabilization of the intermediate cation favors the selective formation of 1,3-nitrobenzoic acid in the electrophilic nitration of benzoic acid.

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These liquids can be separated by the process of distillation because the 2-propanol and water option B) have combined physically and have the same boiling point.

A bottle of rubbing alcohol contains both 2-propanol and water.

These liquids can be separated by the process of distillation because the 2-propanol and water have combined physically and retain their different boiling points.

The process of separating two miscible liquids with different boiling points is called distillation.

The procedure is based on the idea that the liquids have various boiling points.

Thus, during the boiling process, one of the fluids vaporizes faster than the other, and that vapor is then collected and allowed to condense, producing pure liquid.

Alcohol and water are examples of two miscible liquids that can be separated by distillation.

The process of distillation operates on the fact that the liquid with the lowest boiling point is vaporized first.

Alcohol has a lower boiling point than water, so alcohol is vaporized first in distillation, leaving the water behind.

A bottle of rubbing alcohol contains both 2-propanol and water.

These liquids can be separated by the process of distillation because the 2-propanol and water have combined physically and retain their different boiling points.

This means that 2-propanol and water are physically combined; that is, they do not form any new chemical bonds with each other.

Consequently, the molecules of the substances remain separate from each other.

Furthermore, both water and 2-propanol have various boiling points.

The boiling point of 2-propanol is 82.6 °C, while that of water is 100 °C. Thus, they can be separated using distillation.

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Answer:

27.3 kJ/mol

Explanation:

Step 1: Given data

Step 2: Calculate the enthalpy of vaporization of this liquid

We will use the Clausius–Clapeyron equation.

ln (P₂/P₁) = -ΔHvap/R × (1/T₂ - 1/T₁)

ln 2 = -ΔHvap/(8.314 J/K.mol) × (1/318 K - 1/298 K)

ΔHvap = 2.73 × 10⁴ J/mol = 27.3 kJ/mol

Answer:

Explanation:

A

The International Union of Pure and Applied Chemistry (IUPAC) provides a standard system for naming organic compounds.

It is essential to learn this nomenclature system to communicate correctly about the chemical structures of compounds and how they relate to each other. Here is the IUPAC name of the following substance.Below is the structure of the given compound: In the given compound, there are four carbon atoms that are connected with single bonds. Carbon atoms are also attached to hydrogen atoms. Since it has four carbons in the main chain, the root name will be "but-". The functional group present in the molecule is the carboxylic acid group (-COOH), which gives the suffix "-oic acid." Therefore, the IUPAC name of the given substance is Butanoic acid.Thus, the IUPAC name of the given compound is Butanoic acid. It is essential to know the IUPAC naming of organic compounds to communicate correctly about the chemical structures of the compounds.

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If we add more magnesium to the reaction, the reaction speed will increase.

The chemical reaction shown is a single-displacement reaction, also known as a single-replacement reaction. In this type of reaction, one element replaces another element in a molecule, producing a new compound and a different element.

In the given reaction, magnesium (Mg) reacts with sulfuric acid (H₂SO₄) to produce magnesium sulphate (MgSO₄) and hydrogen gas (H₂). This can be represented by the following balanced chemical equation:

Mg + H₂SO₄ → MgSO₄ + H₂

This is because the amount of reactant determines the number of reactions that can occur. If the amount of magnesium is increased, more magnesium atoms are available for the reaction with sulfuric acid, leading to a higher rate of reaction.

However, this increase in reaction rate is only valid up to a certain point, after which further addition of magnesium will not lead to an increase in rate of reaction. This is because other factors such as the concentration of sulfuric acid and the temperature of the reaction may become limiting factors that can no longer be compensated by adding more magnesium.

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Answer: 68.6 mL

Explanation:

We need to use the equation M1V1=M2V2. Molarity's units are in L so we need to convert the 50 ml into L (divide by 1000).

.05(.298)=(x)(.2173)

x = .068 L

to convert to mL we multiply by 1000

.068*1000=68.6 mL

Answer:

ıt is the projesi where the polen of one flower reaches the sığmaz of another flower.

Answer:

B

Explanation:

Have a nice day☺gsjsjamsvwksk

Answer:

I can be carbon dioxide

Explanation:

because in soda it gets fizzy and bubbly and that's carbon dioxide.

Answer:

the relative molecular mass of hydrated iron (II) sulfate FeSO4.7H2O is 278.02

Explanation:

Answer:

(CH3)2N(CH2)

Explanation:

A hydrogen bond occurs in a molecule when hydrogen is covalently bonded to a highly electronegative atom.

That means that if we are looking for a compound in which there is no hydrogen bonding, we are actually looking for the compound in which hydrogen is not directly linked to an electronegative atom.

If we look at the options carefully, the compound that has such characteristic is only (CH3)2N(CH2) which is a tertiary amine. The nitrogen is directly linked to three alkyl groups and no hydrogen atom hence the molecule does not exhibit hydrogen bonding.

Sedimentation, filtration, and coagulation are the treatments that will help remove contaminants from minerals or from the pipes carrying water from a source.

Sedimentation is a process in which suspended particles settle out of water. It is one of the most basic techniques for removing particles from water. As particles settle, they become trapped in the bottom of a container or settle to the ground in an outdoor setting

Filtration is a method of removing particles from a fluid. It is a physical or chemical separation method that separates solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass.

Coagulation is the process of using chemicals to remove contaminants from water. By creating a chemical reaction, coagulation destabilizes particles and causes them to clump together. This helps to remove the contaminants from the water.

Disinfection is the process of eliminating or destroying pathogens that cause infection. Disinfection eliminates harmful microorganisms by destroying or inactivating them. The disinfectant is a chemical or physical agent that is used to destroy or inactivate harmful microorganisms.

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Answer:

If you have 67.31 g of CH₄, you have 4.21 moles

Explanation:

To know the amount of moles if you have 67.31 g of CH₄, you must know the molar mass, that is, the mass of one mole of a substance, which can be an element or a compound.

On the periodic table, the molar mass of the elements, also called the atomic mass or atomic weight, can be found at the bottom of the element. In this case:

To calculate the molar mass of a compound, the molar mass of the elements of the compound must be added multiplied by the times they appear. So in this case the molar mass of CH₄ is:  

CH₄= 12 g/mole + 4* 1 g/mole= 16 g/mole

Now you can apply the following rule of three: if 16 g are contained in 1 mole of CH4, 67.31 g in how many moles are present?

\(moles=\frac{67.31 g*1 mole}{16 g}\)

moles= 4.21

If you have 67.31 g of CH₄, you have 4.21 moles