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莫耳數的運算
Mar 2nd 2014, 06:27

各位聰明的大大 拜託幫幫我
第一題。 (1.8x10^22個H2O) 第2題。(9克H2O)

(1)H2O莫耳數 (1)H2O莫耳數

(2)H2O質量 (2)H2O分子個數

(3)H莫耳數 (3)H原子莫耳數

(4)H質量 (4)H原子個數

(5)O莫耳數 (5)O原子莫耳數

(6)O質量 (6)O原子個數

**請別只告訴我答案 請各告訴我怎麼算
拜託了~~~~

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