Question

Stęzenie metyloaminy 1mg/m3 powietrza zamien na mol/dm3.

Answer 1

Masa CH3NH2 = 31g/mol

1g = 1000mg
1mg = 0,001g

1m³ = 1000dm³

0,001g CH3NH2 ------------ 1000dm³
x g CH3NH2 --------------------- 1dm³
x = 1*10⁻⁶g CH3NH2

1*10⁻⁶g CH3NH2 ----------- x moli
31g CH3NH2 ----------------------- 1 mol
x = 3,226*10⁻⁸ mol/dm³