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Chemical Reaction Questions and Answers (Q&A)

Pb(NO3)2 + 2 KI ---> PbI2 + 2 KNO3what constitutes this reaction ?

4 Answers

Why is it exothermic it has a positive energy energy is getting absorbed so therefore shouldn't the energy level increase?

3 Answers

C is the answer to this question. An extensive property is one of the properties of matter that will change depending on the amount of matter that it will be exposed to. Mass is one example of an extensive property. For example, you are going to place a kilo of bananas in one place.

This kilo of bananas will have a certain amount of mass, but if you would add another kilo, then it will be heavier. This means that the mass of all the bananas that you have placed in one area has already changed.

This is different from the color, which may change but not readily. The color of bananas may be green or yellow, but it will not change immediately just because you have added one banana.

2 Answers

In science, a true solution deals with the type of mixture and how it is dissolved. Also, it also has to comply with the measurements of the particle size. Specifically, a true solution’s particles can’t be larger than one nanometer. It also must be a homogeneous mixture. This means that at least two substances are mixed together and their particles are spread evenly or uniformly throughout the mixture. The opposite of that is called heterogeneous and this means that the particles are not spread evenly throughout the mixture.

There are many examples of a true solution, but probably the most common is a sugar and water solution. When mixed thoroughly, the sugar dissolves into the water. If you drank it, the water would consistently taste sweet due to the sugar.

2 Answers

There are no actual answers here - just A, B, C, and D, where answer A reads “A”, answer B reads “B”, and so on. There are no diagrams, no descriptions. This makes it impossible to say for certain what the actual answer should be. However, this shouldn’t be that hard for someone who is good at chemistry to figure out.

Since I am not that particularly good at chemistry, I will not attempt to answer this question without a sufficient answer on the list. I would implore the first answerer to expand on how they know it is answer “D” without anything else on the answer list, not only for my benefit, but for the benefit of those who come to this question after me.

2 Answers

The correct answer to this question is D, 0.96 M. The given equation and chart can help us solve this question. Along with using the equation and table, it is helpful for the person answering the question to know the meaning of the terms in the question. The term concentration is the amount of a substance that is in space.

The term Volume is how much liquid, solid, or gas occupies a space. This type of question would be found on a chemistry test. Due to its difficulty, it could also be found on an IQ test to test one's intellect.

1 Answer

The correct answer to this question is B, hydrolysis. This is defined as a chemical breakdow of a compound, formed from a reaction with water. The word hydrolysis comes from Ancient Greek, where hydro means water and lysis means to unbind. During this process, water molecules are seperated into hydrogen and oxygen atoms.

This is done by using electricity. There are many different types of hydrolysis'. One includes salt. It occurs when a salt of either a weak acid or base dissolves into water. There is also hydrolyses of amides, which happens when the nucelophile attacks a carbon of the amide.

1 Answer

The Retro-Diels-Alder Reaction.

The Retro-Diels–Alder reaction (RDA) is the second microscopic reversed reaction of the Diels–Alder reaction—the formation of a diene and dienophile from a cyclohexene. It can spontaneously be accomplished with heat, or acid or base mediation.

With the right and the appropriate driving force, the Diels–Alder reaction proceeds in reverse, providing diene and dienophile from starting cyclohexene derivatives. This process was known and applied to the detection of cyclohexadienes as early as the year 1929. After reacting with acetylenes through a Diels–Alder/retro-Diels–Alder sequence, it released ethylene and aromatic compounds.

1 Answer

A process where a sugar is broken down into yeast and carbon dioxide

1 Answer

It will usually depend on the structure and the current placement of the atoms but it is likely for multiple bonds to form so that different atoms can remain or become stable. There are some compounds that may wreak havoc when they are not stable and this is usually prevented by creating different, multiple bonds.

You will know the type of bond formed based on the elements that are available. When a metal and a non-metal form a bond, this is most likely to be ionic. If the bond is between two nonmetals, this is considered to be covalent.

Van der Waals is considered to be the type of force that may happen between different atoms and molecules. There are forces that may happen even from a distance. Metallic and hydrogen bonds are considered to be highly specialized types of bonds.

1 Answer

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