When wood id burnt, 30 grams of ash are formed due to the chemical changes that occurred. The missing 370 grams are evaporated into the air where they form other particles and substances.
(60)/(60+5.05)=.922367 C 1-0.922367=0.07763259 H (0.922367)(78.12)=72.05534204 C (0.07763259)(78.12)=6.06 H 72.05534204/(12.01)=6 C 6.06/1.01=6 H Empirical= CH Molecular=C6H6
There is only room for eight electrons in the second electron shell, so there can only be eight elements in this period, and no room for another section.