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Clearnote
Q&A
Senior High
Chemistry
好難🤯
Chemistry
Senior High
over 4 yearsago
✨
好難🤯
第1章 物質的組成 15.甲和乙兩化合物皆由元素R和Q所組成,其中甲化合物中Q的重量百分率為20%,而1.4 素養題,克的乙化合物中含有1.2 克的R;若甲的分子式為R.Q。,而乙的分子式為R.Q,且乙一莫 耳完全燃燒需要x莫耳的氧氣並產生,莫耳的RO, 與z 莫耳的Q30,其反應式為: Z+ O. →WRO + zQ.0 則下列哪些選項正確?(應選3項) 【108學測] (A) a = 2 (B) x = 3 (C) y = 2 (D) z = 4 (E) x + y + z = 7
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