Question

A sample of propane gas occupies 625 cm3 at 20.0 °C and 750 torr. What is the final volume in cubic centimeters at -80.0 °C and 750 torr?

Answer 1

Answer:

0.9488L or 948.8ml

Explanation:

1atm =760torr

x =750torr

x=750/760

temperature in kelvin

t(k)=t(c)+273

t1=20+273=293k

t2=-80+273=193k

1L=1000cm3

625cm3=625/1000L=v1

v2=?

at constant temperature

v dierectly proportional to temperature by charles law at constant pressure

v1=kt1

v1/t1=v2t2

625/1000×293=193×v2

v2=0.9488L or 948.8ml