Tolong bantuannya pake cara

Mr CO2 = Ar C + 2 Ar O = 12 + 2(16) = 44
Mr H2O = 2 Ar H + Ar O = 2(1) + 18

m C = ( Ar C / Mr CO2 ) × m CO2
= ( 12 / 44 ) × 22 gram
= 6 gram

m H = ( 2 Ar H / Mr H2O ) × m H2O
= ( 2(1) / 18 ) × 9 gram
= 1 gram

n C : n H
= (m C / Ar C) : (m H / Ar H)
= (6 gr / 12 ) : (1 gr / 1)
= 0,5 : 1
= 1 : 2

RE = CH2

(A) Metana => CH4 => Salah
(B) Benzena => C6H6 => Salah
(C) Butana => C4H10 => Salah
(D) Siklobutadiena => C4H4 => Salah
(E) Siklobutana => C4H8 => Benar