A hydrocarbon gas with an empirical formula #CH_2# has a density of 1.88 grams per liter at 0°C and 1.00 atmosphere. What is a possible formula for the hydrocarbon?
We need to find a molecular mass, and the best way of doing this is the Ideal Gas Equation:
We solve for
Well, this gives me an answer in
I get (finally!),
Now the molecular formula is always a mulitiple of the empirical formula, of course, the multiple might be
This is a first year problem, I take it. I ask because it gives me an idea as to how to bowl.