设水有5g,双氧水有2g,5g水 = 5/18 mol , 2g水 = 2/34 mol,
分子个数比 = 5/18 :2/34 = 170 :36 = 85 :18
氢个数比 = 5/18×2 :2/34 ×2 = 85:18
氧质量比 = 5/18×16 :2/34 ×32 = 85:36
化成摩尔质量就解决一切,掌握窍门掌握一切!
觉得好的话请...
设水有5g,双氧水有2g,5g水 = 5/18 mol , 2g水 = 2/34 mol,
分子个数比 = 5/18 :2/34 = 170 :36 = 85 :18
氢个数比 = 5/18×2 :2/34 ×2 = 85:18
氧质量比 = 5/18×16 :2/34 ×32 = 85:36
化成摩尔质量就解决一切,掌握窍门掌握一切!
觉得好的话请...