Ok so i gave this problem a try...

**an unknown gas is found to travel twice as fast as CO**_{2}, which traveled 14.00 cm in 12.00 sec. What is the molecular mass of the unknown gas?My work....

(28.00 cm / 16.00 sec). _____

------------------------ = \| UK. (square root)

(14.00 cm / 16.00 sec). ---------

\| 44.0095 g/mol

_______ _____________

( \| UK ) (14.00 cm) (\|44.0095 g/ mol) (28.00 cm)

--------------------------- = --------------------------------

16.00 sec. 14.00 cm

____ ____________

\| UK = (\|44.0095 g/mol) (28.00 cm)

------------------------------

14.00 cm

I dont know what to do with my final set-up to get the answer

help?

UK = unknown btw