
B4C1練習用
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
chungtsen chen
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26 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
0.5 莫耳的 XO2 含有 7 公克的 X,請利用附表找出 X 是何種物質?
Li
N
Al
S
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如表是一些元素的原子序及原子量,在等質量的氫氣、氧氣、食鹽、銅中,何者具有最多的電子數?
氫氣
氧氣
食鹽
銅
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知氧氣的化學式是 O2,則下列敘述何者正確?
1 個氧氣分子為 32 公克
32 個氧氣分子為 1 公克
32 公克的氧氣含有 6×1023 個氧氣分子
每個氧氣分子的質量為 6×1023 公克
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列為 C(12)、O(16) 、S (32)和 Al(27) 四種元素所形成的化合物,何者一莫耳的質量最大?〔99. 基測Ⅱ〕
CO
CO2
SO2
Al2O3
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有關化學反應式的敘述,下列何者錯誤?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若 A 與 B 反應會產生 A2B3,其化學反應式為 2A+3B → A2B3,則下列敘述何者正確?
反應前後總莫耳數不變
0.6 莫耳的 B 完全反應需 0.3 莫耳的 A
0.2 莫耳的 A 完全反應可產生 0.5 莫耳的 A2B3
0.1 莫耳的 A2B3 生成時,A 與 B 共消耗 0.5 莫耳
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若水(H2O)與雙氧水(H2O2)中所含氫的質量相同,則水與雙氧水中所含氧的質量比為何?(即水:雙氧水)
18:34
1:2
2:1
1:16
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