Pls answer

kim is doing an experiment with sound waves. she tested to see how quickly a sound wave could travel through three different materials: a metal pole, a helium balloon and a glass of water. she recorded her results. which of the following is most likely true?
group of answer choices

the sound wave traveled more quickly through the glass of water than the metal pole.

the sound wave traveled the fastest through the helium.

the sound wave traveled more quickly through the water than the balloon.

the sound wave traveled the slowest through the metal pole.

The sound wave travelled more quickly through the glass of water than the metal pole.

The sound wave travelled the fastest through the helium.

The sound wave travelled the slowest through the metal pole.

These 3 are most likely true.

If you have to pick just one, the sound wave travelled the fastest through the helium.

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.