Question

A gas occupies 72.0 mL at 25 oC and 198 KPa. What is the volume of this gas at 45 oC and 129 KPa?

Answer 1

\[\frac{ P _{1} V _{1} }{ T _{1} }=\frac{ P _{2} V _{2} }{ T _{2} }\]

Answer 2

what about this: Determine the molar mass of an unknown gas if a 1.08 g sample occupies a volume of 59.3 mL at 33 oC and 746 mm Hg.

Answer 3

use the ideal gas equation,

PV=nRT

substitute n=mass/molar mass (abbreviated like this "n=m/M")

PV=mRT/M

isolate M, M=mRT/PV

Answer 4

so im using M=mRT/PV?

Answer 5

yep

Answer 6

and then solve for V?

Answer 7

solve for M, molar mass

Answer 8

okay thank you so much!

Answer 9

no problem