Question

at 50.0C the balloon ha a vlomue of 1.78L. Calculate the carbon dioxide density at this temperature.

Answer 1

Your problem isn't complete.
density = mass(whatever that is)/1.78 L

Answer 2

well it saids:

A 1.50L rubber balloon is filled with carbon dioxide gas at a temperature of 0.00C and a pressure of 1.00 atm. the density of the carbon dioxide gas under these conditions is 1.98g/L.

a)at 50.0C the balloon ha a vlomue of 1.78L. Calculate the carbon dioxide density at this temperature.

Answer 3

I saw the original post and responded again there with a more complete answer.