A compound is 92.3% carbon and 7.7% hydrogen. What is the empirical formula of this compound?
Follow those steps :
Imagine that you have 100 g of Carbon and hydrogen
Convert % into mass
Transform mass into moles
(The molar mass of carbon and hydrogen are rounded here)
To see for one Carbon, how many Hydrogen you have, put the next equation
(It can be the other way around, for 1 Hydrogen, how many Carbon)
Solves for x
(Generally take the largest of those result and divide it by the smallest )
It means that for 1 Hydrogen, you have 1 Carbon each time.