Answer:
B) exothermic.
Explanation:
Hello!
In this case, we need to keep in mind that exothermic reactions release heat, so they increase the temperature as the final energy is less than the initial energy; in contrast, endothermic reactions absorb heat, so they decrease the temperature as the final energy is greater than the initial energy.
In such a way, when a dissolution process shows off a negative enthalpy of dissolution, we infer it is an exothermic process due to the aforementioned; therefore, the answer is:
B) exothermic
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Answer:
The answers are as given in the attachment
Explanation:
The application of the de brogile equation was used and appropriate substitution were made as shown in the attachment
Answer:
Explanation:
It resembles a simple composition. Your instructor may not accept that answer. What is happening is the Fe is giving up 2 electrons so that it may embrace the C5H5.
That's usually what happens in a simple composition.
What makes me wonder is the C5H5. It has no charge and yet the Fe is shown as giving up 2 electrons. I'm guessing that either a halogen is introduced or something is to the left of C5H5 on the left side of the equation.
Anyway it is a composition of some kind.
Answer:
<em>The correct option is C) The number of collisions of gas particles decreases</em>
Explanation:
The molecules in a gas are not located close to each other as molecules in a solid or a liquid. The molecules in a gas have more energy. If we decrease the number of particles in a gas, then there will be reduced collisions as the molecules are already located further apart.
However, a decrease in the volume will affect the pressure of a gas, not the decrease in the number of gas particles.