Using an oscilloscope, it can be observed that the pitch of a sound is directly related to a sound wave’s frequency while the volume is directly related to a sound wave’s amplitude. the change shown in the illustration suggests that the a) pitch is increasing. b) pitch is decreasing. c) volume is increasing. d) volume is decreasing.

Your answer is D.

The change in the illustration shows a decrease in amplitude. Because a sound wave’s amplitude is directly related to a sound’s volume, the change in the wave tells us that the volume is decreasing.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

the correct answer is:

a. formation of precipitation