[請益] 請教理化兩個問題
想請教各位老師
一、若碳的原子量由12改成24,則一個氫原子重多少克?
(A) (B)
23 23
2/6x10 1/6x10
我選(A),答案是(B)
why?
原子量不是比較的質量嗎?
難道1莫耳氫原子的質量是1g
就算原子量改變1mole的H還是1g?
故答案選B ??
二、有關「鋼絲絨生鏽後,重量增加」這一事實,下列敘述哪個正確?
(A)重量增加主要是因為有氧氣參與反應之故
(B)這一反應不符合質量守恆定律
我選(A)
可是我的理化師父說是(B)
why??? > <
希望各位老師能看得懂我的問題在哪裡~謝謝
我是理化界菜蟲 請大家多多指教
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