Before leaving the ground, the pilot fills the propane tank with 30 kg of liquid propane fuel. After flying the craft for half an hour, the pilot sees that the gauge on the fuel tank indicates only 15 kg of propane are inside. Which of the following
statements best explains this observation?

HELP NOW PLEASE

more info ? ? i don't understand what the question is

explanation:

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.