S:32gram/mol, Ar O:16 gram/mol)
a. 4 mol gas N2
b. 1.204X1024 molekul SO3
c. 5.6 liter gas SO2 (Oo
, 1 atm)
Tentukan massa dari ke tiga kondisi di bawah ini; (Dik; L = 6.02 x 1023, Ar N;14gram/mol,Ar
Jawaban:
a. 112 gr
b. 160 gr
c. 16 gr
Penjelasan:
a. 4 mol gas N2
Mr = 2 x 14 = 28
m = n x Mr
= 4 x 28
= 112 gr
b. 1,204 x 10^24 molekul SO3
n SO3 = (1,204 x 10^24)/(6,02 x 10^23)
= 2 mol
Mr SO3 = 32 + (3 x 16) = 80
m = n x Mr
= 2 x 80
= 160 gr
c. 5,6 L gas SO2
n SO2 = 5,6L/22,4 L = 0,25 mol
Mr S02 = 32 + (2 x 16) = 64
m = n x Mr
= 0,25 x 64
= 16 gr