A. 1 mol CH4 ...... 16 g CH4
x moli CH4 ..... 80 g CH4
x = 80/16 = 5 moli
B. 1 kmol SO2 ..... 22.4 m3 SO2
x kmoli SO2 .... 4.48 m3 SO2
x = 4.48/22.4 = 0.2 kmoli
C. 1 mol H2 ..... 6.023 × 10^23 molecule
a moli H2 .... 1.8069 × 10^24
a = 1.8069 × 10^24 / 6.023 × 10^23 = 18.069 × 10^23 / 6.023 × 10^23 => a = 2 moli