Question

求下列物质中的氧原子的微粒个数：

Answer 1

① nO = 0.25mol × 4 = 1 mol

② n Al（OH）3 = 3.01 × 10 ^ 23 /（6.02 × 10 ^ 23）mol

= 0.5 mol

n O = 0.5 mol × 3 = 1.5 mol

③ n O2 = 8 g /（16 g / mol）= 0.5 mol

n O = 0.5 mol × 2 = 1 mol

④ n O3 = 11.2L / （22.4 L / mol）= 0.5 mol

n O = 0.5 mol × 3 = 1.5 mol