Question

Pakai jalannya yah please

Answer 1

Massa x = 2 gr
V x = 1 liter
massa C2H6 = 7,5 gr
V C2H6 = 10 liter
Mr C2H6 = 30

V x / mol x = V C2H6 / mol C2H6
mol x = mol C2H6 x Vx / V C2H6
mol x = (7,5/30) x 1 / 10
mol x = 0,025 mol

Ar X = massa / mol
Ar X2 = 2 gr / 0,025 mol = 80 gr/mol
Ar X = 80 gr/mol / 2 = 40 gr/mol