Answer:
A reaction in which the entropy of the system decreases can be spontaneous only if it is exothermic.
Explanation:
The spontaneity of a reaction depends on the Gibbs free energy(ΔG).
- If ΔG < 0, the reaction is spontaneous.
- If ΔG > 0, the reaction is nonspontaneous.
ΔG is related to the enthalpy (ΔH) and the entropy (ΔS) through the following expression:
ΔG = ΔH - T.ΔS
where,
T is the absolute temperature (always positive)
Regarding the exchange of heat:
- If ΔH < 0, the reaction is exothermic.
- If ΔH > 0, the reaction is endothermic.
<em>Which statement is true? </em>
<em>A reaction in which the entropy of the system decreases can be spontaneous only if it is exothermic. </em>TRUE. If ΔS < 0, the term -T.ΔS > 0. ΔG can be negative only if ΔH is negative.
<em>A reaction in which the entropy of the system increases can be spontaneous only if it is endothermic.</em> FALSE. If ΔS > 0, the term -T.ΔS < 0. ΔG can be negative if ΔH is negative.
<em>A reaction in which the entropy of the system decreases can be spontaneous only if it is endothermic.</em> FALSE. If ΔS < 0, the term -T.ΔS > 0. ΔG cannot be negative if ΔH is positive.
<em>A reaction in which the entropy of the system increases can be spontaneous only if it is exothermic.</em> FALSE. If ΔS > 0, the term -T.ΔS < 0. ΔG can be negative even if ΔH is positive, as long as |T.ΔS| > |ΔH|.
A food web is graphical representation of what eats what in an ecological community and is formed by the natural interconnection of food chains.
Freshwater mussel are important components of food webs. They are omnivores and they feed upon algae, zooplanktons, bacteria and dissolved organic matter.
- If a virus wiped out the mussel population, the consumer (seagull, octopus, human) may not starve or die as they have other sources of food available. The other food sources available for human is fish, shark and octopus, for seagull is fish and for octopus is limpets. However as the consumer have lost a source of food, the competition for other food sources will increase. Competition occurs in a food web as individuals of different species struggle to obtain the same food.
- The two other consumer of mussels are-human and octopus.
- The population of consumers may not change drastically as other food sources are available.
Learn more about food web-
brainly.com/question/18816028
Correct answer is chemical energy.
Reason:
For the chemical reactions to occur, energy is to be supplied for breaking and reorganization of bonds. This energy can be in form of heat, light, etc. Since, breaking of bonds results in chemical reactions to occur, t<span>he energy stored in molecular bonds is called Chemical energy.</span>
The atom with the electron configuration has completely filled shells and will ordinarily not react with another atom.
<h3>Electronic configurations</h3>
Atoms with completely filled shells are said to be stable and will ordinarily not react with another atom irrespective of the number of valence electrons.
The S and P orbitals in the electron configuration have been completely filled. Only atoms with partially filled shells readily react with other atoms with partially filled shells.
More on electron configurations can be found here: brainly.com/question/14283892
#SPJ1
1. The population of the mice seemed to grow until day 7. This likely occurred do to the fact that the mice kept reproducing and they had enough resources to sustain the population growth.
2. the carrying capacity is around 24 since that is when they reach population equilibrium.
3. This will lower the mice population since it will introduce a predator that will lower the carrying capacity.
4. The mice population can change in the future if more predators are introduced, if predators die out/go away, if an invasive species is introduced that competes with the mice for resources, if the climate changes, and if the amount of resources available to the mice increases or decreases.
I hope this helps. let me know in the comments if anything was unclear.
