Answer:

Explanation:
We can solve the problem by using Gay-Lussac's law, which states that:
"For a fixed mass of ideal gas kept at constant volume, the pressure of the gas is directly proportional to its absolute temperature"
Mathematically:

where
p is the pressure
T is the absolute temperature
The equation can be also rewritten as

where, in this problem:
is the initial pressure
is the final pressure
is the final temperature
Solving for T1, we find the initial temperature:

Converted into Celsius degrees,

Explanation:
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The density gradient model most closely resembles the... urban model.
<h3>What is the density gradient model?</h3>
This model establishes particles are not equally distributed but there are some zones with more or fewer particles. Moreover, particles move from a higher concentration zone to a lower concentration zone.
<h3>What urban model is similar to the gradient model?</h3>
The density gradient model mostly resembles the demographic transition model that explains the density of demographic zones changes over time as more people move to the zone or people leave the zone. This is similar to density gradient because it shows density is not uniform and it evolves.
Learn more about urban in: brainly.com/question/26609978
Answer:
O A. frequency.
Explanation:
Intensity is how stressful the thing is while duration is how long it lasts. Stress is just what it is, and frequency is how often it repeats itself, that is, the rate at which it repeats. Every time it repeats it has its intensity and duration.