Two answer multiple choice-- please help! 18 pts! What is true about reaction spontaneity and entropy?

The rusting of iron is a nonspontaneous process because rust particles have less entropy than iron, and reactions with a decrease in entropy are nonspontaneous.

A spray of perfume diffusing in a room is a spontaneous process because gas particles have higher entropy when they are spread evenly around the room.

 A spray of perfume diffusing in a room is a spontaneous process because gas particles have higher entropy when they are spread evenly around the room.

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

Spontaneous reactions are those reactions which takes place on their own and do not require any external energy source. Spontaneous reactions are always accompanied by an increse in entropy.

Thus a spray of perfume diffusing in a room is a spontaneous process because gas particles have higher entropy when they are spread evenly around the room.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

distance, luminosity, brightness, radius, chemical composition, and temperature