Which pair of compounds has the same empirical formula? c3h8 and c3h c2h2 and c2h c4h10 and c6h c4h10 and c2h5

The answer is C4H10 and C2H5

The empirical formula of both compounds are the same, so, where is the difference? It's on the number of molecules. It means that we can find a number which can multiply or divide one of both empirical formulas in order to get the other one.

We can rewrite the first compound formula in the following way:

For this particular case, the empirical formula( which is the simplest formula of the compounds we have) is C2H5.

Have a nice day!

c. 75.7

i think that is the right