Chemical Reaction Questions and Answers (Q&A)

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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

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...Read More

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...Read More

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...Read More

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...Read More

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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 mediat...Read More

1 Answer

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

1 Answer

T. Lopez

Let's see how far my knowledge stretches

Side effects and adverse effects are two different things that explain the outcome of the reaction take place when someone uses a particular medication. The two terms are mostly used in medicine, and they differ from each other. Side effects are unintended consequences of a drug or...Read More

1 Answer

Option C - mass
Mass doesn't change in physical or chemical change.
Physical change are changes that affect the form of a substance. Example is the change in the state of water from solid to liquid and to ice.
Chemical change is a type of change that occurs when a subst...
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